Document 8RYgYX7b0BBZgD4rJ5DQKm2oZ

CertainTeedEH Date May 5, 1980 Subject AMBLER PLANT INDUSTRIAL HYGIENE SURVEY December 3-7, 1979 and January 28-29, 1980 To Location and mail code Hank Benhardt s i/ t Ambler - 258 /A.... Frorn^ Location and mail code T. C. Shaffer VF 1125/4 cc: F. Timpe - 2125/2B L. Ambler - 2125/2B J. McGinley - 2125/2B W. Blakeslee - BB/2126 W. Magers - Ambler, 258 ip X Please find attached the Industrial Hygiene Survey Report and the Engineering Study Results for the surveys which were conducted on December 3-7, 1979 and January 28-29, 1980. If there are any questions, please don't hesitate to contact me. TCS/ejb Attachment 01-2S-0B0S PLAINTIFF'S EXHIBIT CTD018504 INDUSTRIAL HYGIENE SURVEY Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Introduction An Industrial Hygiene Survey was conducted at the Ambler Asbestos-Cement Pipe Plant during the periods of December 3-7, 1979 and January 28-29, 1980. The survey was conducted to supplement the on-going in-plant fiber exposure surveillance program and to measure employe? exposures to total dust and noise. One hundred and fifty-six personal air sample measurements were made during the survey. A sound pressure level survey supplemented by 38 personal audiodosimetry exposures ((fas also conducted. The appendices to the report document the air sampling methodologies, the analysis techniques, and the current standards used in evaluating the data. The field notes and in-house laboratory documentation of this survey are on file in Corporate Health and Safety. This report is an "Employee Exposure Record" as defined in 29 CFR 1910.20 and must be retained indefinitely in the plant and made available upon request to those federal officials/designees as specified in 29 CFR 1910.20 (d). Summary The results of this survey disclosed that all job functions presently meet the current 2 f/cc OSHA limit for asbestos except the Mixer Operator and Crusher Operator where the employees will wear respirators until engineering corrections are completed. The average time-weighted fiber levels in manufacturing jobs were found to be 1.14; finishing, 0.46; and in fittings the average personal exposure was 0.73 f/cc. The plant was informed of the excess levels and the affected employees were notified. The Mixer Operator's exposures will be controlled by the installation of the CertainTeed Automatic Bag Opener which is expected to be completed during the first half of-1980. The crusher has been repaired to reduce CTD018505 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 2 airborne fiber levels since these tests and installation of a new unit is planned. These engineering corrections should maintain fiber exposures at safe levels. Until such time as the corrections are completed the mandatory use of personal respirators will be continued for these two positions. * A sound level survey and personal audiodosimeter survey disclosed a number of job positions where the current OSHA noise limits are exceeded. Affected locations include the pipe machine, crusher, coupling mills, saws and lathes. Specific control measures are recommended in the text of this report. Until control measures are instituted and proven effective the use of personal hearing protection is necessary. CTD018506 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 TABLE OF CONTENTS Introduction Summary Manufacturing Schedule During Survey Discussion i Asbestos Fiber Levels Respirators Noise Survey Vacuum Cleaners Total Dust Further Air Monitoring Recommendations Tables 1. Dust/Fiber Exposures 2. Audiodosimetry Log Appendices I Monitoring/Analytical Procedures,Current Standards II Key Elements of a Respirator Program III Sound Pressure Level Measurements I 1 3 4 6 7 13 13 13 14 15 22 26 28 39 CTD018507 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 3. Manufacturing Schedule During Survey The pipe machine manufacturing and finishing operations being conducted during this survey were as follows: Day Monday Date 12/3/79 Manufacturing Day, 7-3 Afternoon, 3-11 8", 2400 Pipe - Finishing - Tuesday 12/4/79 14"-15" 3000 - 12" Sewer Wednesday Thursday 12/5/79 12/6/79 21", 3300; 18" 4000 8", 3300 Until 4:00pm, 6", 150 Friday 12/7/79 6", 150 pipe - 6", 150 - 12" Sewer - - -Monday T/28/80 8", 3300 - - Tuesday 1/29/80 8",3300 until 7:45am; 20-24" 150 until 11:05 am; 8", 150 - - CTD018508 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 4. Asbestos Fiber Measurements Table I presented the results of the personal fiber sampling during the survey. A discussion of the fiber sampling results follow. Fiber Dump The Mixer Operator stages and dumps bags of asbestos fiber to the dump station which feeds asbestos to the Number 1 mixer by means of a bucket elevator. With the exception of the dump station opening, the system is enclosed. A local exhaust hood with an opening approximately 30 by 30 inches with an empty bag disposal port encloses the bucket elevator. The face velocity at the exhaust hood ranged from 300 to 500 linear feet per minute with the gate damper fully open. The Mixer Operator is required and was observed to wear a 3M 8710 respirator and special protective clothing while staging and dumping fiber. Approximately 24 bags per cycle are dumped with each cycle lasting about 15-20 minutes and occurring once per hour. Personal exposure samples on the Mixer Operator on two consecutive days (Samples 8-12 and 13-18} measured 2.36 and 2.05 f/cc, slightly exceeding the 0SHA Permissible Exposure Level of 2 fibers/cc for an 8-hour Time Weighted Average (TWAI. Sample 16 is, as yet, an inexplicable anomoly. This 20 minute sample was taken while the Mixer Operator was on break in the lockerroom and lunch room. Exposures during bag dumping operations (Samples 5, 7, and 17) were found to range from 2.7 to 5.07 f/cc, averaging 3.8 f/cc. These measurements are within the 0SHA peak exposure level of 10 f/cc. The operator was observed to wear a 3M 8710 respirator and disposable suit while dumping fiber. Pipe Machine Just prior to the December, 1979 survey, a new blending system had been CTD018509 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 5. installed to reduce dust levels and to enhance the mixing of the dry asbestos-cement mixture with reclaimed water from the Saval. This new system was being shaken down during the December survey. At the time of the January visit, the installation was essentially completed. Air sample results for the Machine Tender and Manufacturing Supervisor, who spend the most time in the vicinity of the blender, demonstrate a reduction in fiber levels. In December, the Machine Tender's tWA was 2.2 f/cc (Samples 019022) but in January it had been reduced to 1.3 and 0.8 (Samples 023-027 and 028-030). Likewise for the Manufacturing Supervisor the 2.7 f/cc TWA (Samples 031-033) was reduced to 1.26 (Samples 034-038). The Press Operator's exposure (Samples 045-048) on 12/3/79 averaged 1.7 f/cc. A personal sample on the Press Operator on 12/6/79 could not be read due to excessive particulate contamination. Total dust measured at this position ion 12/3/79 does not exceed the 0SHA Nuisance Dust limit however. Personnel TWA exposures for the Mandrel Operator, Pipe Stripper, Tray Loader, Autoclave Truck Driver, Utility Truck Driver, and Relief Operator were all found to be within current limits averaging about 0.5 f/cc. Mandrel Cleaning Mandrels occasionally have patches of asbestos/cement which adhere to the steel. An 11 minute sample on an employee hand-scraping a mandrel resting on the floor, measured 1.01 f/cc. Crusher Operator While operating the Crusher, the operator's exposure (Samples 067,068,070, 071) averaged about 3.0 f/cc. The operator was noted'to occasionally enter the baghouse to manually shake the bags as they caked up. Mr. Randle was CTD018510 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 6. observed to wear a 3H 8710 respirator while entering the baghouse on 12/6/79. The fiber level during this 5 minute operation was found to be 15.9 f/cc. The crusher area is posted as a respirator use area. Finishing Air sampling was conducted on employees involved in lathing 12" sewer pipe on Finishing Line 3 on December 4, 1979. Toward the end of the day, approximately 1:00 pm, the employees assumed equivalent positions on Finishing Line 2. The results (Samples 073-107) show all TWA personal exposures to range from 0.26 to 0.71 f/cc. A general buildup of fiber concentration throughout the day can be seen in the Finishing Department data. During the first two hours, the overall average for all Finishing Line employees was 0.33 f/cc. Samples of the next two hours averaged 0.50 f/cc, then 0.60 f/cc and the last half hour of sampling (on Line 2) was 0.60 f/cc. Fittings The employee sampling results in the fittings, department were found to range from 0.11 to 6.2 (Samples 108-149). The calculated 8-hour TWA exposures for all employees in this department ranged from 0.28 to 2.0 f/cc. On December 5, the Fittings Department was monitored with personal samples at basically two hour intervals throughout the day. The average fiber levels here, like those seen at Finishing, tend to increase as the day progresses. As the day proceeded, the averages were 0.34, 0.50, 0.97, and at the end of the day were 1.4 f/cc. Respirators Currently, 3M 8710 respirators are used at locations throughout the facility where required and by employees who choose to use one. There is a 3M white CTD018511 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 7. cap to be used by employees entering the baghouse to perform repairs or to unclog the filters, however, this unit was not in working order at the time of the January survey. 3M 8710 disposable respirators were being used for this purpose. A very large drawback with the 3M 8710 is that employees cannot be properly fit tested to assure us that when an employee is wearing the respirator, he is being properly protected. Undetected leaks around the nose or face due to facial contour lead to false security that the respirator is in fact offering protection. It is especially important that all employee's who are required to wear respirators be fit tested. The respirator protection program should be upgraded to incorporate toxic dust filters for all job positions where we require the use of respiratos. These positions include Scrap Crusher and Mixer Operator. A single use respirator, 3M 9900, as well as other permanent half-mask respirators approved by NI0SH for protection against asbestos containing dusts should be utilized. These should also be made available to all employees who request a respirator. It is recommended that a "Personal Respirator Control" unit program be developed using the concepts presented in Section C of the CT Health and Safety Manual and Appendix II to this report. Noise Survey The noise survey was conducted in two parts. First, employees wore DuPont audiodosimeters set at 90 dB for an average six hours of their work day. The audiodosimeters are noise measuring devices which measure and accumulate the total noise dose above 90 dBA for the total time during which the employee wears the instrument. The resulting value is recalculated to determine the 8-hour exposure based on the assumption that the employee's work is fairly consistent throughout the day. This 8-hour value is compared to the 0SHA 8-hour acceptable limit of 100%. The survey results are given in Table 3. CTD018512 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 8. The second aspect of the noise survey consisted of sound pressure level and octave band analysis measurements of work locations throughout the facility. These engineering samples provide insight into the nature of the noise problem and means of engineering controls. These results are presented in Appendix III at the end of this report. The OSHA Occupational Noise Exposure Standard, 29 CFR 1910.95, states that when employees are subjected to excessive sound pressure levels, feasible administrative or engineering controls shall be utilized. If such controls fail to reduce sound levels to the acceptable limit, personal protective equipment (hearing protectors} shall be provided and used. Recommendations are included in the following sections to assist the engineering department with control measures to reduce operator exposure to the level where the use of hearing protectors will not be required. Noise Survey Discussion Fiber preparation. Exhibit l of Appendix III shows noise levels throughout the fiber preparation area. While working in and around this area where the sound pressure levels ranged between 83 and 94 dBA, the Mixer Operator's exposure was determined to be an acceptable 31% (on Table 3). Pipe Machine. The noise levels at the pipe machine, presented in Exhibit 2, show that general operating conditions produce 86 to 91 dBA. The levels at the pipe machine increase to 99 dBA when the mandrels clang together. Air release noise was noted as a major source of noise when the new mandrel rolls into position. Altogether, these sources caused the Machine Tender and Mandrel Man to be overexposed. Reduction of these noise exposure levels should start by installing air mufflers on all pipe machine air cylinders. Also, considerable noise is generated by the empty mandrel as it rolls into position within the pipe machine. Reduction of some of this noise could be accomplished by installing neophrene pads on metal to metal impact and roll surfaces. In the interim we recommend these employees wear hearing protectors. CTD018513 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 9. Curing Tunnels. Along the curing tunnels, two employee positions were found to have excessive noise exposure, the Tray Loader, and the Utility Truck Driver. These over-exposures are believed to be due to the job of changing mandrels. Both of these employees push the mandrels into positions at the mandrel return conveyor. It was observed that the employee's close proximity to the clanging mandrels accounts for the especially high noise does levels of 457% and 582% observed for the Utility Truck Driver, A. Schimmel, on 12/3/79 and 12/6/79 (Table 3 ). Long term engineering control of this noise could be accomplished by the installation of a conveyor to replace hand rolling the mandrels at the mandrel change station. This would also help avoid back strain of those employees manually moving mandrels. At this time, a neophrene pad should be installed on the upper surface of the rails. Employees should be instructed to wear hearing protection while performing this job. Crusher. Two audiodosimeter evaluations were made on 12/6/79 for the Crusher Operator and found to be 114% and 88%. Variation in this job position is due largely to the speed at which the individual works. During the actual crushing of pipe, the noise at the operator was found to be 102 to 108 dBA (Exhibit 3). Reduction of this noise could be accomplished by lining the non-wearing surfaces inside the crusher with sound absorbing acoustic foam. Finishing Department. On 12/4/79, audiodosimeters were worn by employees on Line 3 while 8" 150 was being lathed and belled. The employees who work at the front end of the line. Lathe Operator, Inspector, and Tester Operator, were found to have excessive noise exposures. Noise measurements in this area are presented in Exhibit 4 which identifies the high noise levels for these positions. CTD018514 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 10. The noise levels during lathing (in the vicinity of the lathe) range between 95 and 102 dBA. Air release noise is most prominent at the Control Operator side where it ranges between 102 and 106 dBA. Background levels are 88 dBA. Control of noise at this area should be initiated by the installation of air silencers at the Lathe Operator's station, control side. Neophrene pads should be installed on all rolling surfaces. These steps will help reduce noise, however, further study of the problem is needed to determine the possible effectiveness of changing tool design, of acoustic barriers and of acoustic absorbers. If engineering controls cannot reduce the levels to 90 dBA, consideration should be given to administratively control the noise by having the employees change positions along the finishing line. Administrative control means that a man's exposure is controlled by limiting the amount of time he is exposed to noise. By rotating the employees through job positions on an hourly basis, and by engineering reductions, it may be possible to reduce all employee exposures to less than 1002. Until such time as the 8-hour exposures are less than 90 dBA, these employees must wear hearing protection. Fittings Department. The audiodosimeter survey documented excessive noise exposures (greater than 100%) in approximately half of the fittings department job positions. For the remainder of the positions, the average was 55% of the allowable dose. Hearing protection was worn by only the FD9 Dry Coupling Saw Operator and the Pencil Sharpener Operator. The #16 and #15 coupling mills are similar noise sources and reduction of the noise will be similar. Both units need air mufflers to reduce the periodic bursts of noise up to 96 dBA (Exhibit 5). Further reduction may be accomplished by the application of sound absorbing foam inside the mills. The #54 coupling-mi11 was found to be well within the noise limit and fiber levels were also considerably lower than the #15 and #16 mills. Installation of a #54 mill type plastic cover on #15 and #16 mills would be expected to be highly beneficial for both noise and fiber levels. CTD018515 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 11. The operator of the FD9 Dry Coupling Saw is exposed to levels of 92 to 96 dBA for 5 seconds and 90 dBA for 5 more seconds during onecut of an 8 inch pipe. Exhibit 6 shows that the background level between cuts is 85 dBA but is in creased to 90 dBA when the #10 saw is cutting. The point to be made here is that the Dry Coupling Saw Operator's noise exposure level of 198% could be reduced if a sound absorptive barrier was built between the #9 and #10 units. ... In this way, when the #9 Saw Operator is changing stock, or resetting the pipe, the accruing noise dose for the #10 Saw will be reduced. The #10 rework saw noise levels. Exhibit 7, could also be reduced by a sound absorptive barrier between the #9 and #10 saws. The present 8 ft high panel is not effective in materially reducing noise exposure levels and may in fact reflect noise and increase the operator's dose which was found to be 297%. The Rework Saw Operator works very close to the saw, manually pulling the blade down onto the piece being cut. The operator is in a direct line with noise generated during the cut. It is recommended that a sound absorptive barrier panel (with plastic viewing window) be built onto the saw handle so that as the blade is brought into position on the piece, the panel would absorb and reflect noise to reduce operator exposures. The Universal Mill Operator was found to have an excessive noise level of 128%. This value is slightly higher than the level which may have been pre dicted by noise measurements presented in Exhibit 8. The observed noise dose may come from variation in products being manufactured and in manufacturing speed, but may also be due to adjacent machining activities. Installation of a small barrier at the mill and installation of noise barriers between fittings department equipment should effectively control the noise exposure at the Universal Mill. The Korit Drills Operator's noise exposure of 122% could have been predicted by measurements taken and presented in Exhibit 9. Reduction of this noise exposure could be assisted by partial sound absorptive enclosures around the Korit Drills. A large enough opening must be left in the front to permit loading and unloading the stock. This measure would reduce the noise exposure CTD018516 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 12. the operator receives from the operating drill when he is changing stock in the non-operating drill. The Wet Saw Operator's exposure was found to be 102%, only slightly over the limit. Reduction of noise exposure here could be accomplished by installation of absorptive barrier walls or curtains throughout the fittings department. The Pencil Sharpener Operator was exposed at a level of 163%. The noise measurements at this position. Exhibit 10, show very high levels of 99 dBA for nearly half of the operating time. A limited degree of noise reduction may be accomplished by installation of absorptive foam on the inside of the enclosure, however, this position is a prime candidate for control of noise by administrative controls. In this case, the operator's whole day exposure was 163%. If this operator could exchange positions mid-shift with an employee whose job had no noise exposure, the final noise exposure on each employee would be reduced to less than 100%. In review, there is no fast and easy solution to the problem of noise in the fittings department. 0SHA requires that noise be controlled by feasible administrative or engineering controls. Only when these methods fail to reduce sound levels to the acceptable limit is it appropriate to utilize a permanent hearing protection program. Reduction of noise levels by engineering and administrative controls can be accomplished for nearly all the job positions found to be excessive by the audiodosimeter survey. In the meantime, until noise levels are reduced to acceptable limits, all employees whose job positions were found to exceed 100% should be required to wear hearing protection. It is recommended that several types of hearing protectors be made available to employees so that they can choose the one most comfortable. These machines and job positions should be posted with signs requiring the use of hearing protection. These employees should also be provided with annual audiometric examinations. CTD018517 Industrial Hygiene Survey Ambler A/C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 13. Vacuum Cleaners. Several "Shop Vac" type cleaners were installed at locations in the plant to provide employees with means of cleaning dust from their clothes before going to lunch or on breaks. The vacuum cleaners do not have high efficiency filters and are not capable of removing all fibers before exhausting into the plant airspace. It is recommended that thesevacuums either be replaced with high efficiency vacuums or that the exhaust from the existing units be tied into the existing ventilation system. Total Dust A series of total dust samples were obtained on the first day of the December.' 3 Survey. These results, ranging from 0.1 to 3.7 mg/M , are well below the OSHA Nuisance/Inert Dust Standard of 15 mg/M , however the silica content was not determined. Respirable free silica sampling was conducted in March and will be reported when silica analysis is completed. Further Air Monitoring Air monitoring was conducted in March for diethylenetriamine at the epoxy fabrication department; for carbon monoxide throughout the facility, and for respirable free silica at locations throughout the plant. These results will be reported under separate cover. CTD018518 Industrial Hygiene Survey Ambler A /C Pipe Plant December 3-7, 1979 January 28-29, 1980 Page 14. RECOMMENDATIONS 1. That a thorough review of the OSHA Asbestos Standard, 1910.1001, be conducted by a panel of plant management personnel to reassess the degree of Ambler plant compliance with that standard. Special emphasis should be placed on personal monitoring to determine 8-hour TWA exposures in those positions where excess levels were determined by this survey. 2. That followup work consisting of short term samples be taken in and around the restroom, locker room and lunch room areas. 3. That whenever any changes - minor or major - are made to the manu facturing process/system, fiber exposure measurements should be made and followup work done to assure that exposures are well within standards at all times. 4. That a plant level Respirator Control Unit Program be developed using the concepts presented in Section C of the CertainTeed Health and Safety Manual and Appendix II to this report. 5. That housekeeping be improved in the manufacturing area and also that it include vacuuming and cleaning of machine and structural surfaces in and around the area. 6. That engineering studies be made to isolate the fiber source at the pipe machine and to explore the feasibility of exhaust ventilation to control fibers. 7. That when dry scrap pieces of pipe are moved that they be wet down to control dust during disposal. 8. That a series of fiber samples be taken at the shot blaster, shot blasting area and on the Shot Blaster Operator while it is in operation. 9. That further monitoring be done on those employees involved in scrapping and sanding materials while on racks over their heads as well as those resting on the floor. 10. That those employees in the Finishing and Fittings Department vacuum more frequently throughout the shift to help reduce background fiber levels. 11. The text of this report contains a number of suggestions for the control of noise exposure. If the methods recommended or other engineering and/or administrative controls cannot feasibly reduce the noise to acceptable levels, a hearing conservation program to include the mandatory use of ear defenders and periodic audiometric testing of exposed employees must be implemented. CTD018519 /-if- *7) p (ot*} ( P`'( - & ? J-2 P'Jjas> YVta.dly /'cm 7t~ Z.t/2-- ^^On; (V& ui ej l\, f / -CJ"l) "7^ Z..V l 'Zf-00 (~t Lt*r /Hi?res- f-tfaj fjukuJ, ^^ .*<fT 0-3? 2-.'of ft 0{ $'<>f7i Key 'X'-iv z /:sy // 2. 3^,68 * 2^2 , S/ < ~?/ ?/ ,7f CTD018520 lustrtal Hygiene Survey ller A/e'Pipe Plant '3-7/79 TABLE Dust/Fiber Exposures Page IS. PC' TION riOH lOATE) NAME/AREA lixer Operator R. Dorln 12/3/79 lixer Operator R. Dorln /28/80 ANALYSIS FOR " TIME MIN. RESULT TWA for Sample period `1. . *i , REMARKS Fiber Total Oust Fiber 6:S0a9:00a 9:00a10:05a 12:33p-- 1:57p 10:05a12:330 10:07a10:47 10:47a11:19a 130 3.0 f/cc Manufacturing 8* 2400 pipe. 65 0.38 f/cc 1.7f/ce Wearing respirator 84 0.81 f/cc y148 2.2 mg/M3 40 2.7 f/cc 32 5.9 T/cc - 81ast gate 1/2 open 5-7: Wearing respirator . 5: Dumping Fiber 6: Stiaged Fiber/Waiting lixer Operator H. Meyers Fibers /28/80 ixer Operator H. Meyers Fibers /29/80 - 11:19a11:45a 26 3.6 f/cc - 7: Duping fiber (Blast Gate 1/2 open. 7:24a- 70 6.9 f/cc 8:34a Wearing 8710 respirator and white suit.'' . ' 8:34a- 16 6.3 f/cc Samples 8 19, hood ventilation 8:S0a 2.. 36. f/cc damper-half open. 8:50a- 42 0.94 f/cc 9:32a Mixer Operator training a new person 9:32a 1:00p 1:002:00o 208 0.82 f/cc 60 VOID 9, Operation upset, baghouse failure. 12, Sample used twice ^ 6:42a8:42a 120 0.66 f/cc 14, Sample used twice. ` 8:42a10:42a 10:47a12:12 12:12p 12:33p 120 VOID 16, Very fine fibers around 5 um long while on break at locker room and lunch roan. 90 1.27 f/cc 2.05 f/cc 17, WMle dumping. 21 13.98 Wearing respirator 12:33-: : 12:SIp 18 12:51p1:57p 66 5.07 1.0 'i ichine Tender J. Low i/3/79 Fibers Total Dust 7:48a- 87 2.6 f/cc 9:15a 9:15a- 97 1.6 f/cc 10:52a 2.2 f/cc Manufacturing 8* 2400 pipe. 12:36p1:45p 69 2.6 f/ec - 10:5212:36 104 1.8 ng/N3 CTD018521 --25 Jli i Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79 ^ POSITION No. OCATION lOATE) NAME/AREA 1 Mixer Operator R. DorIn 2 12/3/79 3 4 S Mixer Operator R. Oorln 6 1/28/80 TABLE Dust/Fiber Exposures Page IS. ANALYSIS FOR ' TIME MIN. RESULT TWA for Sample period '1 . REMARKS Fiber 6:50a9:00a 9:00a10:05a 130 3.0 f/cc Manufacturing 8* 2400 pipe. 65 0.38 f/cc 1.7f/cc Wearing respirator 12:33p1:57p 84 0.81 f/ec 1, Total Dust 10:05a- 148 2.2 mg/M3 ( 12:33d Blast gate 1/2 open Fiber 10:07a10:47 40 2.7 f/cc - 5-7: Wearing respirator .5: Duping Fiber TIT: 47a11:19a 32 5.9 f/cc - 6: Sl!aged Fiber/Waiting : 7 B Mixer Operator H. Meyers 9 Fibers 10 1/28/80 n 12 13 Mixer Operator H. Meyers Fibers 14 IS 16 17 B- 11:19a11:45a 26 3.6 f/cc - 7: Duping fiber (Blast Gate 1/2 open. 7:24a8:34a 8:34a8:S0a 8:50a9:32a 9:32a 1:00p 1:002:00d 6:42a8:42a 8:42a10:42a 10:47a12:12 T7TT2p 12:33p 70 6.9 f/cc Wearing 8710 respirator and white suit.'' . 16 6.3 f/cc Samples 8 19. hood ventilation 2.36. f/cc damper, half open. 42 0.94 f/ce Mixer Operator training a new person 208 0.82 f/cc 60 VOID 9, Operation upset, baghouse failure. 12, Sample used twice ^ 120 0.66 f/cc 14, Sample used twice. ' 12090 21 VOID 1.27 f/ec 13.98 2.05 f/ce 16, Very fine fibers around 5 us long while on break at locker room and lunch room. 17, While dumping. Wearing respirator 12:33-: : 12:51 p IS 12:51 p-- 1 :S7p 66 5.07 1.0 9 Machine Tender <]. Low 10 12/3/79 '1 :2 -- Fibers Total Oust 7:48a- 87 2.6 f/cc 9:15a 9:1Sa- 97 1.6 f/cc 10:52a 2.2 f/cc Manufacturing 8* 2400 pipe. 12:36p1:45p 69 2.6 f/cc - 10:5212:36 104 1.8 ng/M3 CTD018522 1l 1 1 1 ir r r. ti c I NO. POSITION LOCATION (Oate) NAME/AREA 23 Machine Tender J. Love 24 25 1/28/80 26 27 - 28 Machine Tender J. Love 29 1/29/80 30 31 Manufacturing 6. Jones Supervisor 12/6/79 33 34 Manufacturing 6. Jones 35 36 1/28/80 37 38 39 Manufacturing 6. Jones Supervisor 40 41 42 44 TABLE 1 Oust/Fiber Exposures Page 16. ANALYSIS FOR Fibers TIME MIN. RESULT sSfle period REMARKS ' 6:30a- 127 6:37a 1.87 f/ce 8:37a 8:49a 12 6.59 f/cc 24, process upset, bag- 1.30 f/e house, failure. 8:49a- 77 10:06 1.3 f/cc 10:06a 201 0.3 f/cc 1:27a l:27p- 33 2:00p 3.28 f/cc /. 26, Removing scrap 2 minutes 27, In area of control panel. Fibers Fiber 6:54a- 206 10:20a 10:20a 156 12:S6p 12:56p 65 2:01 p 2:15p- 188 5:23p 5:23p- 97 7:00p 7:00p- 30 7:30p 0.57 f/cc 0.93 f/cc 3.80 f/< t 1.21 f/cc 2.0 f/cc 30, Relieving Control Operator, 1 cleaning cylinders. 31, changing mandrels 2.3 f/cc 2.7 f/c ,32, changing mandrels ' cleaning mandrels. 6 8.6 f/cc ^hot Blasting Mandrels Fiber 6:27a- 130 8:37a 8:37a- 14 8:61a 8:51a- 78 10:09a 10:09- .156 12:45p 12:45p- 78 2:03p 0.78 f/cc 5.74 f/ce 1.26 1.66 f/ec 35, Process upset, baghouse failure. 1.12 f/cc * 37, scraping mandrels for 5 minutes. 1.11 f/cc Fibers 5:48 7:45p 57 7:45a- 15 ):00a 8:00a- 62 9:02a 9:02a- 108 10:50a 10:50a 137 l:07p 1:07p- 63 2:10p VOID VOID VOID VOID VOID 1.11 f/cc 39-43, VOID. Pump found Inoperative at end of 43 sample period. CTD018523 Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79 TABLE 1 Oust/Fiber Exposures Page 17. NO. POSITION LOCATION (OATE) NAME/AREA _ ANALYSIS FOR 45 Press Operator C. Worthington Fiber 46 47 48 Total Oust 49 Press Operator C. Worthington Fiber 12/6/79 50 Mandrel Operator 51 12/3/79 J. Blckley 52 t 53 Pipe Stripper H. Meyers . 12/6/79 Fiber Total Oust Fiber TIME MIN. RESULT TWA for Sample period 1 REMARKS 7:08a9:05a 9:05a9:50a 12:452:00p 9:50a12:45o 3:2Sp6:45 117 45 75 175 200 1.6 f/cc Manufacturing 8* 2400 pipe. 1.9 f/cc 1.7 f/cc VOID K 1.3 mg/M3 t Pimp malfunction void _- Heavy partlculate-not couotable '1 7:09a10:00a 171 12:35p1: Sip 76 10:00a- 155 12:35o 2:30p6:20p 230 0.65 f/ce Manufacturing 8* 2400 pipe. 0.96 f/cc 0.75 f/ce 0.82 mg/* 1.5 f/ec - Manufacturing IS* 3000 pipe. 54 Tray Loader S. Ntneo 55 Fiber 56 Autoclave F. Oemedlo Truck Driver 57 12/6/79 Fiber 7:00a- 290 11:50a . 11:50a- 115 1:45p 8:05a11:S5a 230 11:55 a- 10S 1:40p a*54 i/ 0.50 f/cc 0.41 f/cc Manufacturing-IS1* 300Q pipe 0.15 f/cc Manufacturing 15* 3000 pipe. 0.28 f/cc 0.57 f/cc i 58 Utility Truck 59 Driver 12/3/79 60 61 H. Schlonel Fiber 62 Relief Operatoi R. Jackson Fiber 63 64 65 Total Dust 6:40a7:03a 7:03a9:20a 9:20a12:40p 12:40p1:50p 23 137 200 70 7:40a 9:10a 90 9:10a9:55a 45 12:48p1:45p 57 9:55a12:48p 173 2.2 f/ec Manufacturing 8* 2400 pipe. 0.26 f/cc 0.62 f/cc VOID Sample used twice 0.79 f/cc 0.66 f/cc I Manufacturing 8* 2400 pipe. 0.20 f/cc 0.51 f/cc VOID Sample used twice 0.24 mg/K CTD018524 rndustrlal Hygiene Survey Amblejr VC Pipe Plant 12/3-7/.79 TABLE 1 Duat/Fiber Exposures Page 18. No ' POSITION LOCATION (OATE) NAME/AREA ANALYSIS FOR TIME MIN. RESULT TWA for Sample period i i REMARKS 66 Laborer 1/29/80 A. Lutz Ftbers 7:22a- 11 1.01 7:43a - Employee scraping mandrels wearing 8710 respirator and white suit. 67 Crusher Operator 68 12/6/79 C. Randall Fiber 69 70 7:00a9:25a 9:25a10:01a 10:06a12:02p 10:01a10:06a 12:02p1:45p 145 152 5 103 2.7 f/ce t Vo f/cc Manufacturing 15* 3000 pipe. Wearing respirator 3.5 f/cc 15.9'f/ec (Excluding 69, baghous 1 entry) In dus<t collector shaking bags, wearing 3H8710 respirator. 2.6 f/cc 71 Crusher Operator 72 12/6/79 R. Meyers Fiber 2:30p5:20p 5:20p6:15p 170 1.5 f/cc 55 voro 1.5 f/cc Pimp malfunction. 73 Fork Truck S. Steltz Driver 74 75 12/4/79 76 Fiber 7:30a- 95 0.17 f/cc 9:0U Finishing Line 3 9:05a11:00a 115 0.26 f/cc 0.26 f/cc 12" .Sewer Pipe (Lathing only) ( 11:00a- 135 0.24 f/cc 1:15p i l:15p1:45p 30 0.58 f/cc Finishing Line 2 77 Lathe Operator A. DeClerlco Ftiler 78 12/4/79 79 (Control Side) 80 81 Lathe Operator 6. Meyers 82 12/4/79 83 (Drive Side) Fiber 6:50a9:00a 9:00a10:57a 130 0.43 f/cc Finishing Line 3 l .'l 117 0.62 f/cc 0.60 f/cc 12" Sewer Pipe 10:57a- 138 0.79 f/cc 1:15p t 1:1Sp- 30 0.36 f/cc 1:45p Finishing Line 2 6:55a9:00a 125 0.20 f/ee / ` r M . Finishing Ltne 3 (Driver Side) 9:00a10:58a- 118 0.33 f/ec 0.30 f/cc 12" Sewer Pipe. 10:58a- 102 0.38 f/cc 12:40p . CTD018525 i Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79' ! | POSITION NAME/AREA i LOCATION (DATE) TABLE 1 Dust/Fiber Exposures Page 19. AJIALVSIS FOR TIME MIN. RESULT TWA for Sample period REMARKS 84 Q. C. Inspector 8S 12/4/79 86 87 A. Mastromatto Fiber 7:28a9:05a 9:05a11:00a 11:00a1:10p 1:10p1:45p 97 0.52 f/cc 115 1.0 f/ec Finishing Line 3 12" Sewer Pipe. 130 0.76 f/cc 0.71 f/ c I 35 0.14 f/cc ( Finishing Line 2 88 Tester Operator 89 12/4/79 90 91 6. Bojacluk Fiber 7:23a9:01a 9:01a11:00p 11:OOp1:15p l:15p 1:45p 98 0.S5 f/cc . Finishing Line 3 (Drive Side) 119 0.75'f/cc 0.67 f/cc . 135 0.77 f/cc 12* Sewer Pipe. 30 0.31 f/ec Finishing Line 2 i I | 92 Seller. 93 94 2/4/79 95 96 Seller 97 12/4/79 98 99 100 Handler 101 12/4/79 102 103 104 Handler 105 12/4/79 J. Handertian Fiber S. Wallace Fiber N. Paone ~ Fiber N. McCarthy Fiber 7:40a9:05a 9:05a11:02a 11:02 1:12p 1:12p1:45p 7:02a9:07a 9:07a11:05a U:0Sa12:45p 12:45p1:45p 7:10a9:07a 9:07a11:04a 11:04a12:45p 12:45p1:45p 7:05a9:11a 9:11a11:02a: 85 0.28 f/cc Finishing Line 3 117 0.32f/ce 0.55 f/cc f 130 1.0 f/cc 33 0.31 f/cc 12" Sewer Pipe Finishing Line 2 125 0.38 f/cc Finishing Line 3 (Drive Side) 118 0.45 f/ec 12* Sewer Pipe 0.67 f/cc 100 0.52 f/cc 60 1.99 f/cc Finishing Line 2 117 0.22 f/cc Finishing Line 3 117 0.28 f/cc 0.37 f/cc 12* Sewer Pipe 101 0.54 f/cc 60 0.58 f/ec Finishing Line 2 126 0.26 f/cc Finishing Line 3 (Drive Side) 111 0.50 f/ec 0.40 f/ce Continued... ' ' CTD018526 Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79 1 POSITION No. LOCATION (DATE) 106 Handler NAHE/AREA H. McCarthy 107 Continued... 108 Hill Operator C. Handschln 109 12/5/79 110 111 112 Hill Operator F. Martncole 113 12/5/79 114 115 analysis FOR Fiber Ftber Fiber 116 Hill Operator 0. Zollo 117 118 12/5/79 119 Fiber 120 Sax Operator E. Cupid Ftber 121 122 12/S/79 - 123 124 Saw Operator A. Echadarrla Ftber 125 126 12/6/79 127 Saw Helper 0. Newman Fiber 128 12/5/79 TABLE 1 Dust/Fiber Exposures Page 20. TIME HIN. RESULT THA for Sample period `1 REMARKS 11:02a12:45p 103 12:45p1:45o 60 7:25a9:33a 128 9:33a11:20a 11:20a12:SSo T2755p 1:45p 107 95 50 7:30a9:35a 9755?: 11:20a 11:20a-'" 12:55o 125 105 95 12:S5pl:45o 50 0.39 f/cc 12" Sewer Pipe 0.50 f/cc Finishing Line 2 0.26 f/cc 1.1 f/cc 0.55 f/CC . >, 30* Coupling Hill FD 16 ' 2.2 f/CC 8* 3300 2.5 f/cc 0.59,f/ec 1.2 f/cc 2.5 f/cc 2.0 f/cc 6.2 f/cc : 30* Coupling Mill FO IS l 8* 3300 * 7:30a9:30a 9:30a 11:20a 11:20a 12:S5o 12:55p l:4Sp 7:35a9:35a 120 0.25 f/cc 42* Coupling M111-FD 54 110 0.18 f/cc 16* Sewer Pipe 0.32 f/cc 95 0.42 f/cc , SO 0.58 f/cc 120 0.29 f/cc Dry Coupling Saw - FO 9 9:35a- no 0.52 f/cc 0.59 f/cc 4* X 6* Couplings 11:25 a 11:25a12:55p 90 1.16 f/cc 12:55p-- 1:45o 7:10a-T 50 0 0.44 f/ec VOID Employee Lost Cassette 9:50a11:55a 11:55a- 1:40p 1Z5 "105 0.41 f/cc 0.41 f/cc 0.40"f7cc- Rework Saw FD 10 7:45a9:25a 100 1.43 f/cc Rework Saw FD 10 9:25a11:25a 120 0.54 f/cc 0.44 f/cc 8* 3300 129 11:25a- 140 0.37 f/cc 1:45p ( ^ CTD018527 Ambler A/C Pipe Plant Industrial Hygiene Survey December 3-12, 1979 TABLE 1 Oust/Fiber Exposures Page 21. Position NO. Location 79 (Date) Name/Area Analysis for Time Min. Result TWA for Sample Period 130 Lathe Operator T. Gray 131 132 (12-5-79) 133 Fiber 134 Lathe Operator H. Barnett 135 136 (12-5-79) Fiber 137 Hill Operator J. OeSilva 138 139 (12-5-79) 40 41' Drill Operator J. Olai 42 (12-6-79) 44 ~w Operator N. Chancy IS 16 (12-5-79) 17 Lathe >8 3perator 9 (12-6-79) E. Moore Fiber Fiber Fiber Fiber 0 Finishing Supervisor (12-5-79) SI Sweeper >2 Operator (12-6-79) R. Grudzinski Fiber H. Duke* Fiber. 53 Electrician 54 (12-3-79) 55 Mechanic 56 (12-6-79) C. Beaver J. OeMarlo Fiber Fiber 7:47-9:30* 7:30-11:25a I:25-1:00p :00-1:45p 103 0,38 f/cc 115 0.51 f/cc 95 0.31 f/cc 45 0.11 f/cc 0.37 f/cc 7:50-9:30a 9:30-12:55f 12:55-1:45p 100 205 50 0,38 f/cc 0,31 f/cc 0.38 f/cc 0.70 f/cc 1 7:55-9:32* 97 0,13 f/cc 9:32-11:25* 11:25-1:00p 1:00-1:45p 113 95 45 0.22 f/cc 0.48 f/cc 0.35 f/cc 7:10-9:50* 160 9:50-11:55* 125 11:55-1:40p , 105 0.66 f/cc D.34 f/ce a.29 f/ce 1:8:45-11:25* 160 88 f/cc 11:25-1:OOp 95 |1,69 f/cc f1:00-1:45p 45 84 f/cc 7:40-9:52* 132 9:52-11:55* 123 11:55-1:40p 105 1 I 1.2 f/cc 11 1.1 f/cc r 1 1.0 f/cc I 0,46 f/cc 1.66 f/cc 1.1 f/cc !3:15-2:OOp J345 0.14 f/cc 0.14 f/ec 1 110:10-12:45 155 12:45-3:00p 135 i1 7:15-9:10* 9:10-1:45p 115 275 0.21 f/cc 0.35 f/cc 0.28 f/cc 0.84 f/ce 0 AO f/cc "OFT/cF 7:40-12:40 p 300 12:40-3:00 p 140 0,41 f/cc 0.36 f/ce 0.39 f/cc Remarks NeOe) Lathe fD 8 6* 6 8 * FMS Sebastlon Lathe FO 20 Laman Lathe FD 7 16* Pipe Universal Boring Mill FO 13 6* Pipe Korlt Drill Wet Saw 16' '150 Pencil Sharpener 1 1 1 | 1 ! ! Working on Finishing Line a 1 1 1 1 1I CTD018528 1 1 i ) 1 INDUSTRIE 4Y6IENE .ALDlODQKlfCTRY LOG TABLE 2 _a CTD018529 m m1NDUS1R1*' WDlODQSlttTW LOG ABLE 2 CTD018530 F ittin g s C. Hanschen H ill Operator 12/5/79. 380 Coupling M ill.F D 1 6 1571 imsnur %iDt WDiotosiitTWuk TABLE 2 CTD018531 F ittin g s H. Dukes Sweeper O perator I 12/6/79^ 290 INDUSTRIE `^YGIEJCAlJOIOOOSIOtf LOG .able $ CTD018532 APPENDIX I Page 26. Monitoring/Analytical Procedures and Current Standards Asbestos Personal samples, Area samples which reflect employee exposure levels, and Engineering Area samples which do not reflect employee exposures were obtained on Mtllipore 0.8 micrometer Mixed Cellulose Ester Filters (MCEF). DuPont P4000 air sampling pumps were calibrated before and after each sampling day to approximately 2 liters per minute (1pm). In most cases, a series of 3 or 4 different filter samples were obtained for the person or area to establish an 8-hou.r time weighted average concentration (TWA). The analysis was conducted according to the USPHS/NIOSH Membrane FilterMethod for Evaluating Airborne Asbestos Fibers (P&CAM 239) by an ex perienced fiber counter who was trained by NIOSH. Fibers were counted on a Nikon Model 96982 phase contrast microscope at 400X magnification. The current OSHA standard is given in 29 CFR 1910.1001. It calls, for an employee TWA airborne limit of two fibers, longer than 5 micrometers, per cubic centimeter of air (f/cc). Also, no employee shall be exposed at any time to airborne concentrations in excess of 10 f/cc. Noise A Bruel & Kjaer 2209 precision sound level meter with B & K 4133 1/2 inch microphone was utilized to obtain sound pressure level measurements. This instrument was calibrated before and after this survey. The reference for all sound pressure level measurements is 0.0002 microbar. DuPont Model D-376 audiodosimeters utilized during this survey were set at the 90 dB cutoff mode. The audiodosimeters were calibrated before and after each day of'dosimetry sampling utilizing the DuPont Audiodosimeter Calibrator Model Cl14 by the CTD018533 Appendix I Monitoring/Analytical Procedures and Current Standards Page 27. direct reading method. Before and after each survey week the audiodosimeters were calibrated by the timed calibration procedure utilizing the DuPont calibrator Cl 14 and the Model R225 readout. This calibration was done for 5 minutes, 10 seconds at 114 dB to give an expected 301 +/- 4X result. The Permissible noise exposure given in OSHA 29 CFR 1910.95, ranges between 90 decibels for 8-hours per day through 115 decibels for a maximum duration of 1/4 hour per day according to the table below. Also, exposure to impulsive or impact noise should not exceed the 140 decibel peak sound pressure level ceiling value. The maximum permissible .audiodosimeter dose is 100X. PERMISSIBLE NOrSE EXPOSURES Duation per day, hours 8 6 4 3 2 1 1/2 1 1/2 1/4 or less dBA, slow response 90 92 95 97 97 100 102 105 no 115 CTD018534 APPENDIX II KEY ELEMENTS OF A RESPIRATOR PROGRAM Page 28. The Occupational Safety and Health Administration (OSHA) provides regulations for the use of respirators in OSHA standard, 29 CFR 1910.134. OSHA indicates that harmful levels of atmospheric contamination of dusts, fogs, fumes, mists, gases, smokes, sprays and vapors shall be prevented as far as feasible by accepted engineering controls. When effective engineering controls are not feasible or.when^they are being instituted, appropriate respirators are to be used. It is required that employers provide respirators which are aplicable and suitable for the purpose intended. The employer is responsible for the establishment and maintenance of a respiratory protective program which includes the following eleven items. 1. Written Operating Procedure. The respirator procedures must be written and should address the selection and use of respir ators. The location's procedures for items 2 through 11 should be discussed and explained in detail. Responsibilities for specific aspects of the program should also be specified in the Location's written respirator program. 2. Proper Selection. The selection of the appropriate respir ator is based on the physical state of the substance Gjas, vapor, particulate, etc...) the warning properties of the chemical, the toxicity of the agent involved, the protection factor of the respiratory device, and the airborne level of., the agent. Other factors to be considered include permissible exposure levels, oxygen deficiency, and approved equipment. 3. Training and Fitting for the Employees. It is required that employees are instructed and trained in the proper use, limitations, selection, and maintenance of respirators. Employees should be trained in the nature of the hazard. The employee must be trained to check the fit of the respirator each time it is used. CTD018535 KEY ELEMENTS OF A RESPIRATOR PROGRAM - Cont'd... Page 29 Fitting through the use of quantitative fit testing (isoamyl acetate or irritant smoke] is- also required. 4. Exclusive Employee Use. Where practicable, the respirators should be assigned to individual workers for their exclusive use. 5. Cleaning and Disinfecting. Respirators are to be regularly cleaned and disinfected. This must be done thoroughly after each use for respirators used by more than one worker. For respirators assigned to one worker, respirators must be cleaned and disinfected daily when they are routinely used throughout the day. 6. Storage.' Respirators shall be stored in a convenient, . clean, and sanitary location. It is especially important that rubber parts are stored so that they do not lose their original shape. A misshapen mask is essentially broken and no longer holds its approval. - 7. Inspection and Maintenance. Respirators used routinely must be inspected during cleaning. Worn or deteriorated parts must be replaced. Respirators for emergency use such as self-contained devices shall be thoroughly inspected at least once a month and after each use. 8. Work AREA Surveillance. Appropriate surveillance of work area conditions and degree of employee exposure shall be maintained. It is necessary to review the work area to identify con taminants- and assess the degree of hazard on a regular basis. CTD018536 KEY ELEMENTS OF A RESPIRATOR PROGRAM Cont'd... Page 30. 9. Inspection and Evaluation of the Program. Regular inspections are required to insure that respirators are properly selected, used, cleaned, and maintained. 10. Medical Examination. OSHA indicates that an employee should not be required to use a respirator unless a physician has determined that the employee is physically able to perform the work and use the equipment. The respirator user's medical status-should be reviewed periodically. % 11. Approved Respirators. Approved (NIOSH/MSHA) respirators are to be used when they are available. The approvals on respirators apply to the respirators as whole units. The approval is valid for the whole unit in good condition. It is nullified by the mixing of components and by use of non-approved components. This is a condensed summary of the OSHA regulations on the use of respirators. Background information on respirators is given in the following sources: A Guide to Industrial Respiratory Protection, John A. Pritchard, Los Alamos Scientific Laboratory, HEM Publication v. No. CNIOSH) 76-189, 1976. ; Practices for Respiratory Protection, ANSI Z88.2, 1969, American Standards Institute, Inc., 1430 Broadway, N.Y., N.Y., 10018. OSHA Standard Method for Determination of Respiratory . Protection Program Acceptability. Industrial Hygiene Field Operations Manual, OSHA Instruction CPL 2-2.20, April 2, . J979, Office of Field Coordination. CTD018537 V->* VU'U b'V L U V;/ W '/ J i . /b* CEHTAIKTiiED CORPORATION UATE: 3|sjl 1 PLANT: (\*e>LEt. JOB DESCRIPTION: F'\>Cf ?rep <xr*\< EXPOSURE: raye ji REF. 0.0002 MICROBAK EXHIBIT f l SHEET OF DEfT. c itjons: Mot INSTRUMENT: Bit 2209 PSLM -_____________ to^ to( MICROPHONE: BfcR ^ ^ CALIBRATOR: lit y23 * 72 5 IS STA. NO. TIME EMPLOYEE ENGINEER: B b K 1613 OCTAVE FILTER .___ a7oo15H- PltOTgCTOR: 3*,,' Foa* CALIBRATION DATE: O<* IK0II 79' 1I BEF0RE AFTER fi NETWORK PEAK OCTAVE CENTER FREQ. (Hr.) A LIN. HOLD 31.i 63 125 250 500 IK 2K 4X 8K 16K 1 8-1<d* IW** 0|r\*r %+ F'.Ue* a 8'5o^ D`.Uoj 83 86 |00 BS 8 ( 11 81 8fe 83 IT 12 &S SH *1 o(e<A'vi*2. nV o|tr.V<t^ 3 8'-52- QreunJ. Lt\ 81 11 84- 88 1o 81 88 87 :8a u 72 tl 1 Voo * 3 <w~A nx\ M-^SfcS. | m CMyr n ~r: H Om T>K.t, Stw 81 SKETCH - V/ ''"*-r *. * r CTD018538 Lm\;7V^V/J L.jJ CEKTAIHTLED C0KP0RAT10W UATE: ,. ^ lallln JOB DESCRIPTION: PifE ITJONS_: ____ Nf ml PLANT: |v IWlsK Hacvmme PlRS* Opt<-aV'Qi______ 1 O 'f/xo EXPOSURE: Page 32 REF. 0.0002 MICROBAR EXHIBIT f_j~___ ~~~~ ` 'sheet OF DEfT. n fs4 u F ACTo tttf<r ENGINEER: INSTRUHEHT: B L i; 2209 PRLH _____ 1 MICROPHONE: Bi K 4133 v B & K 1613 OCTAVE FILTER Mool^ PKOtfCIO.: j., FoAM CALIBRATOR: Bit *23* * 725 i ?5 STA. NO. TIME EMPLOYEE \ V.03a 1 " ' Z f1a.cV\;,,e OperaVmj I 3 Ho-cVt^c Co*i^fo\ V i 0<V" CALIBRATION ., DATE: a I * |T 1 BEFORE fV AFTER 9Y NETWORK Il'EAK OCTAVE CENTER FREO. (Hz.) A LIN. ] HOLD 31.5 63 125 250 500 IK 2K 4K 8K 18W 1(9 85 8(o 81 86 88 85 82 7b 71 11 103 8o 83 8b 81 8b 81 62 85 82 8b 8b 16K 65 7b -MonJift\ "V* f 5 Ptti) OptnW. 11 66> rolling oi tV* 11 b r^onArcl ?ovVo* -- *or 8b ^Oircl CVrr^C i ^r 18 ^fe> A^e^Wtr *V- n\crnU\ reiv*- %% SKETCH - REMARKS iflfl CTD018539 U c.'w-- C U w 'w;? V> J I. . /I CEHTAIUTEED CCRPOilAT IOW ref. 0.0002 M1CR0BAK EXHIBIT (' 3 DATE: ", | PLANT: l$Ui T ^___________________________________________ " 'SHEET*'' OF JOB DESCRIPTION: , Mrm-oril C 1TIONS: . NOfmaV e 5tR\ Pf Et /. rScraEpXPOSCURRE: 5HEfc. DErT. utiufr ww.fac.ua,-* ENGINEER: . at If "Y* sJrviffi+J INSTRUMENT: microphone: B . K 2209 PSLH " b<H ioL> rfcK (iav B i> K 1613 OCTAVE FILTER * 7oo13^ protector: j1( /' CALIBRATOR: B k R y230 * 735^5 STA. NO. TIME EMPLOYEE CALIBRATION DATE: . tl/3j7j BEFORE ?* AFTER ?V NETWORK PEAK OCTAVE CENTER FREO. (Hx.) A LIN. HOLD 31.5 63 125 250 500 IK 2K AX 8K 16K 1 <t:3o^ AtSCE STl>llC*Clvl<fT 87 1 2 MauPRH Pwu.tR. - NoKnAi 8& *fu//cr 14 - Mkr It**/, S<n*(tttk 1! JOrocr ccL n : 3 W ?loot nt U Crvtker 85 H Cfwsle Op\f on 85 108 -- Cr-sU;*^ 102 J tar. 5 US 128. S * SKETCH - REMARKS MAN-****. ___r , P>STUtM CTD018540 INI i/Y^Wl'Vy/'Ilr'tw`rJ.uri7; L! u \.a'.^VS.:^-//VTyVJ i . I CE1UAI1JTEED CORPORATION DATE: IBIS I'M JOB DESCRIPTION: *5 CONDITIONS: Merm*l , PLANT: An ftts*. J* EXPOSURE: REF. A/R: MJIsV 1.1 MIL.L.1 Page 34 REF. 0.0002 MICROBAR EXHIBIT f 1 SHEET OF DETT. PlMItHIMb ENGINE^ INSTRUMENT: MICROPHONE: CALIBRATOR: STA. NO. TIME 1 BAR 2209 PSLM BAR 4133 V B & X 1613 OCTAVE FILTER Serial 7oo9J9 PROTECTOR: 3" fotm. BAR HlO> ^7251<\$ CALIBRATION DATE: lilslTl III3JIT BEFRE ,V after ti NETWORK PEAK OCTAVE CENTER FREQ. (Hz.) EMPLOYEE A LIN. HOLD 31.! 63 125 250 500 IK 2K 4X 8K ( 10 Mi.) S6 16K -- C<A+!^, H- 15 11 So 83 as 87 11 as U 87 83 So -- AW (fftft.it. lox\o*0 11 2. >,,t SAa V.B* OfW, fcc\tyttvl 88 t Cw+Vms.aH-c. 1#**1 (60 8o So 8l 8<e n 93 81 as To To 3 T*Vtr (leak) , Da*.V^r4A 86 I H Culler , ll *. il ia as |Uo (fr I Vi vv ilf) Air S teller I is | 8H Seller A> Celtw. <* SKETCH fedttyrl 1 6*IWt - REMARKS 1 ii 1< I 1 . CTD018541 ouvimn j w Alt1: iaIs n 1 PLANT: H E. OB DESCRIPTION: LouPlimCj Mill5 :0N 'JONS: ' " Nor mo\ HSTRUMEHT: UCKOPHONE: B 0 K 2209 PSLM " to<n tC><* BtR EXPOSURE: '<*r\s, "SH exhibit f__5_ Pa<je 35 inlet~ ________ OF___________ DErT. FlTTl"** ENGINEER: B & X 1613 OCTAVE FILTER Moo 15H_ PROTECTOR: 3,, foft<wl CALIBRATOR: B & R ^30 * 725 ilS ;ta. NO. TIME EMPLOYEE CALIBRATION DATE: . ' BEFORE 71 Ml5/" AFTER tl NETWORK PEAK OCTAVE CENTER FREQ. (Hz.) A LIN. HOLD 31.2 63 125 250 500 IK 2K AX 8K 16K CD 1 Operator ^ ftocAt^row Hilling ***)vpl*P Ai* ACCl w tQu. /too 17/ /{OO 8 81 82 8H 82 15 It lol 85 -- "*' ''*' ^'"k ,r - release a*Me *V S m*\\ 2 88 A Hill;*) . 8U 33oo - " 12 $M+ 18 tt 8o 8H as e<* 81 88 1H 8^ 81 7(o A>> *S H Ojet^Ot, M*ite 4* % /liltU, ffc* l50Cpl<>93 . . SKETCH - REMARKS *5*1 *it* I CTD018542 CL.KHU.U J UL.IJ LUUUl^UiL.i )ATK: u|s|n ion description: :on' -joxs: plant: 'PfY CoufU*4< S*'*'* EXPOSURE: EXHIBIT f. (q Page 36 SHEET OF DETT. Fv-ITI-%S ENGINEERV: rjL^- INSTRUMENT: I1CHOPHONE: CALIBRATOR: 11 A K 2209 PSLM "" iO(* B A It 4133 %" BiK iZZO < 725 iis STA. NO. TIME EMPLOYEE B (r K 1613 OCTAVE FILTER Moolis ntorjiCTOR: 3" FoAn NETWORK CALIBRATION DATE: BEFORE ti AFTER 9f PEAK OCTAVE CENTER FREQ. (Hz.) A UN. BOLD 3i.: 63 125 250 500 IK 21t 4X 8K 16K \ %" SlttMlij -- 5st*ij *10 " Ssc. 85 A*^icVyR w'i^V SKETCH - REMARKS CTD018543 J C/wvJ w C tu J 1* CERTAIHTL'ED CORPORATION DATE: 12 h I 71 JOB DESCRIPTION: PLANT: An L e R. '>0 ftfiooln $A to ...D1TJ0XS: A|r <*i I INSTRUMEHT: BU 2209 PSLM ___________ ** fell ICU MICROPHONE: Bi K 4133 V CALIBRATOR: lit V<23 * 725 l?5 STA. NO. TIME EMPLOYEE NETWORK A LI* Page 37 KEF. 0.0002 MICRODAK ` EXPOSURE: EXHIBIT ___ _ ' SHEET OF DEPT. Fittings ENCINEER: 'ik B & K 1613 OCTAVE FILTER B,7oolitt rnorjiCTOR: 3" fort* CALIBRATION DATE: i e 13 f7f BEFORE yy AFTER fi PEAK OCTAVE CENTER FREO. (Hr.) HOLD 31.* 63 125 250 500 IK 2K 4K 8K 16K 1 OpetkW 15 | C , SO m*. lofc l i Helper BacV)r.<tJL| iSa. 1*f l * loo 3 &WU<1 OptraUr -- - -- **IO . VA **- 81 --.os.- 8fe \ ' ** SKETCH - REMARKS | I I i 1 \ ` CTD018544 CEUTAim L.LD CGiU'UiO'vi JLUW )ATt: ulsjn IOB DESCRIPTION: ,, 1'L/uNT; ~~ I ~~ :or rJOXS: INSTRUMENT: UCHOPHONE: CALIBRATOR: IUC 2209 PSLH " feM tO( B 6 K 4133 v Bit Y230 * 72 Si 15 STA. NO. TIME EMPLOYEE / .. _ EXPOSURE: LemmAl lathe r\l*t U.UUU* Iugaoumk exhibit e Q Pa9e , 'yniiilf ~ OF DErT. FiTTirt 6 $ ENCINEER:VrjMk B 6 K 1613 OCTAVE FILTER "ToolVi rnoipcTOR : 3" foAM CALIBRATION DATE: ,71 BEFORE >Y *Z 1 AFTER tf NETWORK PEAK OCTAVE CENTER FREQ. (Hz.) A LIN. HOLD 31.! 63 125 250 500 IK 2K 4X 8K 16K 1 0peT*i*r PD-t) UVm<- 8a<A}i.,J. 8H 11 11 11 81 8t 85 88 su Bfc 85 o 7 a -- Opr*\or FD*7 LeV* IaYV* Uur 18 OwnW *("* iS oM*t J JLUii" 4:^4 I*-** (L# 2d Mr m AmJL. ^i*l^ f.-Afe U CBNttfMlJ A J crank li l*l >Lvk< SKETCH - REMARKS ** -t_ t -i UMl<*lttAl ^ mU: 1 ._ ;> *.r u^UW *? CTD018545 CLIU'AIK J LLJ) CWPOi'JUiUU )ATE: l 2 |5 | ll PLANT: /\ n 6l E )01> DESCR1PTB0X: KoR.IT :ok Tons! tiot ia*1 INSTRUMENT: I1CK0PH0NE: BUI 2209 PSLH (pR\lOt* B4J; 4133%t( D*MAS EXPOSURE: Fpes b 28A M-t. U.uuji IUC:\u~;ii\ exhibit 0 *1 P.a9e 39 SHEET OF DEfT. frTTN6i ENGINEER:'-rSt~U- B & K 1613 OCTAVE FILTER * 7 00*131 mOTJiCTOR: 3,, FoA<n 1AL1BRAT0R: B 4 R y2JO *72Si?5 STA. NO. TIME EMPLOYEE NETWORK CALIBRATION .. BEFORE M DATE: AFTER fV PEAK | OCTAVE CENTER FREQ. (Hz.) A LIN. HOLD 3i.; 63 f 125 250 500 IK 2i; AX 8K 16K Jok *c+iV.,ky Le^ln^ 8" STOCK- 81 Loo.^ H" *'** Ktmool 8 Stock It* 18 -- 5 " 18 18 11 81 82 82 8<b 8(o tr1 . feiM.C H*STW.,lf,,W ftft o*IWt 81 80- <2 .? 1' . - SKETCH - REMARKS 15 12 8S ; > it CTD018546 yeit:a,^SOJ' J CltRTAIIJTCCD CORPORATION DATE:: l*l<l7l JOB DESCRIPTION: PLANT: EXPOSURE: c noise survey sheet Page 40 REF. 0.0002 H1CROBAK -- EXHIBIT l lO "SHLLT**^ OF 'faTl0 CONDITIONS: INSTRUMENT: MICROPHONE: B t K 2209 PSLM $c.>al BfcR 4133yi CALIBRATOR: B s R -nfi Hl*> 5115 1 U 1613 OCTAVE FILTER $**.*- JooH'SH PROTECTOR: .. 1 Foai"\ CALIBRATION DATE: 1- i_* : ,ll5l ' 1 BEFORE T* AFTER TT STA NETWORK PEAK OCTAVE CENTER FREQ. (Hz.) NO. TIME EMPLOYEE A LIN. HOLD 31.! 63 125 250 500 IK 2K AK 8K 16K 1 OpKati . B**VJfo4 ZcK.. 88 J1 n 8l 85 82. 80 87 12. li 85 75 . . SKETCH - REMARKS ; . * | Cm QvjtJ j 1 I I # 1 1 CTD018547 ii.CZ.'uJ Lu v.%7 V; I. . ;J ,, CEK.TAIK'TCED CORPORATION DATE: .,. JOB DESCRIPTION: CONDITI ONS: ^ PLANT: - EXPOSURE: L tlusortoi^) r REF. A/R: Pfige 41. REF. 0.0002 MICROBAR -------E--X--H--I-B--IT----f-_-J--J--_-_-_-------------- OF DEPT. ENCINEERY/tfJ/ INSTRUMENT: lit 2209 PSLM MICROPHONE: BiR 4133V, CALIBRATOR: STA. NO. TIME B4R V*. Jo EMPLOYEE 715I1J lit 1613 OCTAVE FILTER *7oo13V PROTECTOR: ,,H ,, 3" Fo* CALIBRATION DATE: . .. /3isI>7 BEFORE fY AFTER V NETWORK PEAK OCTAVE CENTER FREQ. (Hz.) A LIN. HOLD 31.i 63 125 250 500 IK 2K 4K 8K 16K 1 C>4?f Sl 35 FVI Cjliilt CiM'wm-* n H "u Z F*\>fliftV*>1 - All n- Al Batter A n*ite (r.m. t |3 Av^Mt A<H M tlftHf Nk sa ntw ctwVer ciuktUit | 1| SKETCH - REMARKS I I I .. _ CTD018548 J INDUSTRIAL HYGIENE SURVEY Engineering Study Results for Asbestos fibers Ambler A/C Pipe Plant A number of environmental air samples were obtained during the December 3-7, 1979 and January 28-29, 1980 industrial hygiene surveys to assist the engineer ing staff in developing appropriate controls. This report discusses the results of these studies which are presented in tabular form at the end of the report. Table 1 includes the personal samples and Table 2 presents the engineering samples. Fiber Dump Station Analysis of the individual sequential samples indicates excessive exposures occur both during bag dumping and during staging and cleanup. To test the possible source of the latter, smoke test observations and air velocity measurements were made which indicated that the space heater located at the ceiling, about 10 feet from the staging area, produced an air current of 35 ft/min over the surface of the unopened bags. Though the bags are sealed, it was noted that fiber deposits on the bags or other surfaces were disturbed by the air flow from the heater. We are recommending that the air from the heater be redirected away from the fiber dump area or the heater be replaced by a non-forced air heating unit. Greater attention to vacuum cleaning and proper work practices by the operator would also help reduce this exposure. Another potential problem was observed when the operator partially closed the blast gate to reduce the exhaust hood velocity. The explanation given for this procedure was that with the hood fully open, fiber bags have been sucked into the hood. One operator stated that the high velocity with the hood opened had resulted in small clumps of fiber being blown into his face. We did not observe these phenomena during this survey. Sample 8 provides some insight into the fiber exposure problem from this procedure. This personal exposure sample with the gate half opened measured 6.9 f/cc. With the gate fully opened (Samples 10 and 11) the levels were 0.94 and 0.82 f/cc. Until CTD018549 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers the automatic bag opener installation, currently underway, is completed, we strongly recomnend that this operation only be conducted with the gate fully opened and a study be made of the optimal velocity to control fiber dispersion in this operation. Sample 9 was taken during a 10 minute break,in the baghouse exhaust due to a frozen switching mechanism. The Mixer Operator and Supervisor immediately donned their respirators and the pipe machine was stopped to avoid continued generation of fibers. The Mixer Operator's exposure during this upset was measured at 6.3 fibers/cc. Exposure levels on the Machine Tender (Sample 24) and the Manufacturing Supervisor (35) during this upset were found to be 6.59 and 5.74 fibers/cc respectively. All were below the 10 f/cc OSHA ceiling limit. All three employees wore 3M 8710 respirators. A similar baghouse breakdown occurred later that morning from 9:39-10:06. Again, the pipe machine was immediately shut down and employees in the area wore respirators. Sample 16 is worthy of some followup. This 21 minute personal exposure sample was taken on the Mixer Operator while the employee went to the locker room and the lunch room. Although tampering with the sample is not ruled out, we recommend that followup samples be taken by the plant. Specifically, we recommend that a few 10-20 minute samples be taken in the locker room, restroom, lunch room and from the baghouse exhaust. Of interest, is that the fibers on these samples were consistently fine fibers, less than 1 micron in diameter and about 5 microns in length. A smoke tube survey was conducted throughout the mixing area to disclose any leaks and to judge the effectiveness of the ventilation system. This qualitative review found the system to be free to leaks and to provide effective control of fibers and dust at material transfer points. CTD018550 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers This review was conducted on Tuesday, 1/29/80, the day after the baghouse failure. At the time of a baghouse failure, dust which is normally captured was blown out and came to rest on top of the transfer screw conveyors between mixers. This dust has not been cleaned from the surfaces within the intervening day of the breakdown. Although dust was not observed to be vibrating off the machinery, it can be expected that breezes of air would be capable of producing aerosols with this debris. The housekeeping program should be reviewed to provide regular vacuuming of all surfaces in the mixing area as well as throughout the plant, especially after process upsets. It was noted that A/C mud is used as a general purpose sealer for the willow mills and blender to seal this machinery in an effort to prevent leaks of fiber into the air. It does an effective job; no leaks were observed while smoke testing the willow mills. While the A/C mud is wet, airborne fibers would not be expected to be a problem. However, this sealer must be scraped away to open the willow mills for the purpose of maintenance or repair of the units. An alternate non-asbestos sealer should be obtained and used to seal machinery. Blender and Trough Areas Just prior to the December, 1979 survey, a new blending system had been installed to reduce dust levels and to enhance the mfxing of the dry asbestos-cement mixture with reclaimed water from the Saval. This new system was being shaken down during the December survey. To test if fibers were being released, point source samples were collected one foot from the Blender at a height of 5 feet (Samples 211-217) on two different days. The fiber levels ranged from 0.8 f/cc to 5.0 f/cc. Likewise, point source samples taken about 6 feet above wetting trough (Samples 224-231) ranged from 2.8 to 14.1 f/cc. One reason given for these emissions was an undersized mizer motor in the modified blender, resulting in blockage of the dry A/C mix. Contributing to CTD018551 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers increased fiber levels during the shakedown period was the necessity of the Machine Tender and Manufacturing Supervisor to frequently open the access lid of the blender to observe the flow or unjam a clog, and the fact that the temporary lid on the blender was not adequately sealed. Engineering changes to install a larger mixer motor and a better sealing access TTd were completed'in early- January, 198QV The followup survey on January 28-29, 1980, showed significant reductions in fiber exposure. The point source samples at the blender ranged from 0.27 to 1.13 f/cc (Samples 218-223). Above the trough, the point source fiber levels dropped to a range of 0.45 to 1.51 f/cc (Samples 232-237). We strongly recomnend that the plant management more stringently followup on any process engineering changes to include the measurement of fiber exposure changes association with such activities. During the January survey , it was observed that A/C mud was being used as a temporary sealant to control fibers at the point where the mixer shaft enters the lid of the blender. The plant manager indicated that other seals had been tried but failed under the constant friction and positive pressure of the vessel. He described a method to change the ventilation at the screw.conveyor which moves A/C dry mix out of the Number 4 mixer into the blender. It was suggested that a ventilation leg could be dropped down to the mixer's point of entry into the blender. It is recoimiended that this or other appropriate steps be taken to provide permanent control of dust at the mixer. Pipe Machine Although the Press Operator's exposure (Samples 45-49) on 12/3/79 averaged 1.7 f/cc, several other samples indicate excursions above 2 f/cc. An area CTD018552 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers sample at the Rollup, approximately 5 feet from the Press Operator on 12/6/79 measured greater than 7.3 f/cc (Sample 244). A personal sample on the Press Operator on 12/6/79 could not be read due to excessive particulate contamination. Area samples on 1/28/80 at the Machine Control Panel (Samples 241 and 242) measured 0.37 f/cc and 4.69 f/cc. A 33 minute personal exposure sample (Sample 27) on the Machine Tender while working in the area of the control panel measured 3.28 f/cc. In an attempt to determine the source of these excursions, a series of "Point Source" samples were taken in and around the pipe machine to see if the steam release from the process contained fiber. Two such samples, 249 and 251, measured levels of 0.94 and 1.08 f/cc. Three other samples, 248, 250, 252, were too heavily contaminated with particulates to count fibers. We cannot say what the major source of the fiber release is at the pipe machine. We do note however, that recirculated process water is used to clean the felt and cylinders. The water mist generated most probably contains some fiber. Airborne mist plus any dried settled mist can build up fiber on machine and structural surfaces and become resuspended by vibration, and/ or air movements. Smoke test and air velocity measurements were taken to observe air flow movement into the pipe machine area. The prevailing air currents on 1/281/29/80 were ?from the Mixing Department and measured at about 40 feet per minute. Between the curing tunnel and the building walls the air movement is irratic. No air currents from the Crusher were observed^ Crusher A smoke tube analysis on 1/29/80 showed practically no air flow into the throat of the Crusher. One of two ventilation connections to the grinder feed chute was missing a 10" piece of flexible duct connection rendering the exhaust essentially useless. Also a metal plate about 18" X 24" on the underside of the crusher appeared to be missing. We are not aware of CTD018553 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers its significance, if any. The cloth bags which are located at the fines pipe line, are used by the Crusher Operator to judge the flow of material through the system. The fabric used cannot provide high efficiency filtration of asbestos fibers and is suspected as a fiber source in this area. Area samples 259, 260, 261 show fiber levels of 5.5, 2.4, and 3.3 f/cc which may come from the cloth bags or from find dust leaks which were observed to occasionally drift downward from the fines cyclone. Mandrel Cleaning The exhaust control ventilation at the shotblaster was reviewed during the January survey and found to be providing good capture velocities at the entrance and exit openings. With 1" of static pressure at the baghouse, the pipe openings (for 8" to 10") had face velocities of 200-250 linear feet per minute when the fans were on but not while the shotblaster itself was in operation. During the operation of the shotblaster, it was observed that a cloud of dust Is carried out with the mandrel as it exits the shotblaster. Most of this dust is expected to be shot, however, some asbestos fibers could also be encountered. Unfortunately, we were not able to obtain a personal sample of the operator during this procedure. It Is recommended that personal air monitoring be conducted to assess fiber levels during shotblasting. Mandrels occasionally have patches of asbestos/cement which adhere to the steel. We obtained a sample of an employee harid-scraping pipe which was resting on the floor. This sample, 66, on R. Lutz, resulted in an acceptable level of 1.01 f/cc. It was learned that the mandrels are also hand sanded with sand paper and scraped while they are in the racks over the worker's heads. It is recommended that short term samples (15 minutes) be obtained to assess fiber levels at these operations. Finishing Air sampling was conducted on employees involved in lathing 12" sewer pipe CTD018554 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers on Finishing Line 3 on December 4, 1979. Toward the end of the day, approximately 1:00 pm, the employees assumed comparable positions on Finishing Line 2. The results, Table 1, Samples 73-107, show all TWA personal exposures to range from 0.26 to 0.71 f/cc. A general buildup of fiber concentration throughout the day. can be seen in the Finishing Department data. During the first two hours, the overall average for all Finishing Line employees was 0.33 f/cc. Samples of the next two hours averaged 0.50 f/cc, then 0.60 f/cc and the last half hour of sampling (on Line #2) was 0.60 f/cc. The data provide insight into general background fiber levels in the plant which appear to generally increase through the day. It should be noted that there is no third shift finishing crew. Also, field notes indicated that during the last half hour of sampling, the #2 Finishing Line was not actually operating. It appears that the fiber levels for the last half hour may reflect a general center plant background level of approximately 0.6 f/cc. Fittings The employee sampling results in the Fittings Department were found to range from 0.11 to 6.2 (Samples 108-149). The calculated 8-hour TWA exposures for all employees in this department ranged from 0.28 to 2.0 f/cc. On December 5, the Fittings Department was monitored with personal samples at basically two hour intervals throughout the day. The average fiber levels here, like those seen at Finishing, tend to increase as the day progresses. As the day proceeded, the averages were 0.34, 0.50, 0.97, and at the end of the day were 1.4 f/cc. These data suggest a general increase in the back ground fiber levels. The highest value of 6.2 f/cc was obtained at the end of the day while the daily cleanup of floors and equipment was underway. CTD018555 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers We recommend that closer attention be given to both the reduction of fiber releases and more frequent vacuuming of deposited fibers throughout the shift to reduce levels in both the Finishing and Fittings Departments to the desired level of less than 0.5 f/cc. CTD018556 Industrial Hygiene Survey Ambler A/C Pipe Plant Engineering Study Results for Asbestos Fibers Recommendations 1. That a thorough review of the OSHA Asbestos Standard, 1910.1001, be conducted by a panel of plant management personnel to reassess the degree of Ambler plant compliance with that standard. Special emphasis should be placed on personal monitoring to determine 8-hour exposures in those positions where excess levels were determined by this survey. 2. That the heater in the area of the fiber dump be redirected or re placed by a non-forced air heating unit. 3. That until the automatic bag opener is put in operation, the blast gate at the fiber dump be positioned to obtain optimal velocity for control of fiber dispersion. 4. That followup work consisting of short term samples be taken in and around the restroom, locker room and lunch room areas and at the baghouse exhaust. 5. That a non-asbestos sealer be used in place of the A/C mud presently being used in an around the manufacturing area. 6. That whenever any changes - - minor or major - are made to the manufacturing process/system, fiber exposure measurements should be made and followup work done to assure that exposures are well within standards at all times. 7. That the exhaust ventilation to the Mixer/Blender be changed to provide permanent control of dust at this area. 8. That a Personal Respirator Control Unit Program be developed using the concepts presented in Section C of the CertainTeed Health and Safety Manual and Appendix II to this report. 9. That housekeeping be improved in the manufacturing area and also that it include vacuuming and cleaning of machine and structural surfaces in and around the area. CTD018557 Industrial Hygiene Survey Ambler A/C Pipe Plant . 12/3-7/79 No. POSITION LOCATION (OATE) NAME/AREA 1 Mixer Operator R. Dor in 2 12/3/79 3 4 S Mixer Operator R. Dorin 6 1/28/80 7 8 Mixer Operator H. Meyers 9 10 1/28/80 11 12 13 Mixer Operator H. Meyers 14 15 1/29/80 16 17 18 19 Machine Tender J. Low 20 12/3/79 21 22 TABLE Oust/Fiber Exposures ANALYSIS FOR " TIME MIN. RESULT TWA for Sample period REMARKS Fiber Total Oust Fiber 6:50a9:00a 9:00a10:05a 130 65 12:33p1:57p 84 10:05a12:33p 148 10:07a10:47 40 'lff:47a- " 32 11:19a 3.0 f/cc 0.38 f/ce 1.7f/cc 0.81 f/ec 1. 2.2 mg/M3 f Manufacturing 8* 2400 pipe. Wearing respirator ' Blast gate 1/2 open 2.7 f/cc 5.9 F/cc - 5-7: Wearing respirator .5: Dunplng Fiber 6: Staged Fiber/Waiting Fibers Fibers 31:19a11:45a 26 3.6 f/ce . 7: Ousting fiber (Blast Gate 1/2 open. 7:24a- 70 6.9 f/cc. 8:34a Wearing 8710 respirator and white suit.' 8:34a- 16 6.3 f/cc Samples 8 19, hood ventilation 8:50a 2.36 f/cc damper, half open. 8:50a- 42 0.94 f/ce 9:32a Mixer Operator training a new person 9:32a - 208 0.82 f/cc 1:00p 1:002:00p 60 VOID 9, Operation upset, baghouse failure. 12, Sample used twice ^ 6:42a8:42a 120 0.66 f/cc 14, Sample used twice. 8:42a- 120 VOID 16, Very fine fibers around 5 ua 10:42a long while on break at locker room and lunch room. 10:47a- 90 1.27 f/cc 2.05 f/cc 12:12 17. WMle dunplng. TCTTZp 21 13.98 12:33p Hearing respirator 12:3312:51p : 18 12:51p- ` 66 l:57p 5.07 1.0 1 Fibers Total Oust 7:48a- 87 2.6 f/cc 9:15a 9:15a- 97 1.6 f/cc 10:52a 2.2 f/ec Manufacturing 8* 2400 pipe. 12:36p1:45p 69 2.6 f/cc 10:5212:36 104 1.8 ng/N3 CTD018558 | No. 23 POSITION LOCATION (Date) NAME/AREA Machine Tender J. Love 24 25 1/28/80 26 27 28 Machine Tender 3. Love 29 1/29/80 30 31 Manufacturing G. Jones Supervisor 32 12/6/79 34 Manufacturing 6. Jones 35 36 1/28/80 37 38 39 Manufacturing G. Jones Supervisor 40 41 42 ' ~ 43 TABLE J_ Oust/Fiber Exposures ANALYSIS FOR Fibers TIME MIN. RESULT siSle period REMARKS ' 6:30a- 127 8:37a 1.87 f/ec 8:37a 8:49a 12 8:49a- 77 10:06 10:06a 201 1:27a 1:27p- 33 2:00p 6.59 f/cc 24, process upset, bag- 1.30f/c house, failure. 1.3 f/ce 0.3 f/cc 3.28 f/cc 26, Removing scrap 2 minutes 27, In area of control panel. Fibers Fiber 6:54a- 206 10:20a 10:20a 156 12:56p 12:56p 65 2:01p 2:15p- 188 S:23p 5:23p- 97 7:00p 7:00p- 30 7:30p 0.57 f/cc 0.93 f/cc 1.80 f/< 1.21 f/CC 2.0 f/cc 30, Relieving Control Operator, A cleaning cylinders. ,_ 31, changing mandrels 2.3 f/cc 2.7 f/c 32, changing mandrels cleaning mandrels. 6 8.6 f/ce ihot Blasting Mandrels Ftber 6:27a- 130 8:37a 8:37a- 14 8:51a 8:51a- 78 10:09a 10:09- .156 12:45p 12:45p- 78 2:03p 0.78 f/cc 5.74 f/ec 1.26 1.66 f/cc 35, Process upset, baghouse failure. 1.12 f/cc 37, scraping mandrels for 5 minutes. 1.11 f/cc Fibers 5:48 f: 45p 57 7:45a- 15 ):00a 8:00a- 62 9:02a 9:02a- 108 10:50a 10:50a 137 1:07p 1:07p- 63 2: lOp VOID VOID VOID VOID VOID 1.11 f/cc 39-43, VOID. Pump found Inoperative at end of 43. sample period. CTD018559 Industrial Hygiene Survey Ambler A/C Pipe plant 12/3-7/79 T-------------------------- He POSITION NAME/AREA LOCATION (DATE) ANALYSIS FOR as Press Operator C. Worthington Fiber 1 46 47 48 Total Dust 49 Press Operator C. Worthingtor Fiber 12/6/79 TABLE 1 Dust/Fiber Exposures TIME MIN. RESULT 7:08a9:05a 9:05a9:50a 12:452:00p 9:50a12:45o 3:25p6:45 117 45 75 175 200 1.6 f/cc 1.9 f/cc VOID 1.3 mg/H3 VOID TWA for Sample period REMARKS Manufacturing 8* 2400 pipe. 1.7 f/cc Punp malfunction - Heavy partlculate-not countable SO Mandrel Operator SI 12/3/79 J. Bickley sz 1 S3 Pipe Stripper H. Meyers . 12/6/79 Fiber Total Dust Fiber 7:09a10:00a 171 12:35p1:51 p 76 10:00a- 155 12:35p 2:30p6:20p 230 54 'rav Loader S. Mineo SS 56 Autoclave F. Demedio Truck Driver 57 12/6/79 Fiber Fiber 7:00a11:50a 290 11:50a- 115 l:4Sp 8:05a11:55a 230 11:55 a- 105 1:40p 58 Utility Truck 59 Driver 12/3/79 60 61 H. Schlnael 62 1 1 63 64 Relief Operatoi R. Jackson 65 __________________ Fiber Fiber Total Dust 6:40a7:03a 23 7:03a9:20a 137 9:20a12:40p 200 12:40p1:50o 70 7:40a 9:10a 90 9:10a9r55a 45 12:48p1:45p 57 9:55a12:48p 173 0.65 f/cc Manufacturing 8* 2400 pipe. 0.96 f/cc 0.75 f/cc 0.82 mg/* 1.5 f/cc - Manufacturing 15* 3000 pipe. 0.54 f/cc 0.50 f/cc 0.41 f/cc I Manufacture I5** 3Q0Q ptp* 0.15 f/cc 0.28 f/cc 0.57 f/cc Manufacturing 15* 3000 pipe. 2.2 f/cc Manufacturing 8* 2400 pipe. 0.26 f/cc 0.62 f/cc VOID Sample used twice 0.79 f/cc 0.66 f/cc t Manufacturing 8* 2400 pipe. 0.20 f/ee 0.51 f/cc VOID Sample used twice 0.24 mg/M i . CTD018560 j ' No. Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79 TABLE 1 Dust/Fiber Exposures POSITION LOCATION (OATE) NAME/AREA ANALYSIS FOR TIME MIN. RESULT TWA for Sample period REMARKS 66 Laborer 1/29/80 R. Lutz Fibers 7:22a- 11 1.01 7:43a - Employee scraping mandrels wearing 8710 respirator and white suit. 67 Crusher Operator 68 12/6/79 C. Randall Fiber 69 70 71 Crusher Operator 72 12/6/79 R. Meyers Fiber 7:00a9:25a 9:25a10:01a 10:06a12:02p 10:01a10:06a 12:02p1:45p 145 152 5 103 2.7 f/cc Manufacturing 15* 3000 pipe. 3.0 f/cc Wearing respirator 3.5 f/cc 15.9'f/ce (Excluding 69, baghous a entry) tn dust collector shaking bags, wearing 3M8710 respirator. 2.6 f/cc 2:30p5:20p 5:20p6:1 Sp 170 1.5 f/cc 55 vo to : 1.5 f/ce Puap malfunction. 73 Fork Truck S. Steltz Driver 74 75 12/4/79 76 Ftber 7:30a9:05a 9:05a11:00a 95 0.17 f/cc Finishing Line 3 115 0.26 f/cc 0.26 f/cc 12* Sewer Pipe (Lathing only) 11:00al:15p 135 . 0.24 f/cc 1:15p1:45p 30 0.58 f/cc Finishing Line 2 ( 77 Lathe Operator A. OeClerlco Ftber 78 12/4/79 79 (Control Side) 80 81 Lathe Operator G. Meyers 82 12/4/79 83 (Orlve Side) Fiber 6:50a9:00a 130 0.43 f/cc Finishing Line 3 9:00a10:S7a 117 0.62 f/CC 0.60 f/ec 12* Sewer Pipe 10:57a- 138 0.79 f/ec 1:1 Sp 1:15p- 30 0.36 f/cc 1:4Sp Finishing Line 2 I 6:55a9:00a 125 0.20 f/cc Finishing Line 3 (Driver Side) 9:00a10:58a- 118 0.33 f/cc 0.30 f/ce 12* Sewer Pipe. 10:58a- 102 0.38 f/cc 12:40p CTD018561 Industrial Hygiene Survey Ambler A/C Pipe Plant IZ/3-7/79T TABLE 1 Dust/Fiber Exposures No. POSITION 1 LOCATION (DATE) 84 0. C. Inspector 85 12/4/79 88 87 88 Tester Operator 89 12/4/79 90 91 NAME/AREA ANALYSIS FOR TIME MIN. RESULT TWA for Sample period REMARKS A. Kastromatto Fiber - 7:28a9:05a 9:05a11:00a 11:00a1:1 Op 1:10p1:45p 97 0.52 f/ce 115 1.0 f/ec 130 0.76 f/ce 35 0.14 f/cc ' Finishing Line 3 12* Sewer Pipe. 0.71 f/ c Finishing Line 2 G. Bojaciuk Fiber 7:23a9:01a 9:01a11:00p 11:00p1:15p 1:1 Sp 1:4Sp 98 0.55 f/ec * Finishing Line 3 (Drive Side) 119 0.75*f/cc 0.67 f/cc 135 0.77 f/cc 12* Sewer Pipe. 30 0.31 f/cc Finishing Line. 2 1 | | j 92 8eller 93 * 94 12/4/79 95 96 Beller 97 12/4/79 98 | 99 100 Handler 101 12/4/79 102 103 104 Handler 105 12/4/79 J. Handerhan Fiber 5. Wallace Fiber N. Paone Fiber N. McCarthy Fiber 7:40a9:05a 9:05a11:02a 11:02 1:12p 1:12p1:45p 85 0.28 f/cc Finishing Line 3 117 0.32f/cc 0.55 f/cc 130 1.0 f/cc 33 0.31 f/cc 12* Sewer Pipe Finishing Line 2 7:02a9:07a 125 0.38 f/cc Finishing Line 3 (Drive Side) 9:07a11:05a 118 0.45 f/cc 12* Sewer Pipe 0.67 f/cc 11:05a- 100 0.52 f/cc 12:45p 1 12:45p1:45p 60 1.99 f/cc Finishing Line 2 7:10a9:07a 117 0.22 f/cc Finishing Line 3 9:07a11:04a 117 0.28 f/cc 0.37 f/cc 12* Sdwer Pipe 11:04a- 101 0.54 f/ce 12:45p 12:45p1:45p 60 0.58 f/cc Finishing Line 2 7:05a9:11a 126 0.26 f/ec Finishing Line 3 (Drive Side) 9:11a- 111 0.50 f/cc 11:02a, 0.40 f/cc Continued... * * CTD018562 Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79 TABLE J_ Dust/Fiber Exposures NO. POSITION LOCATION DATE) 06 Handler NAME/AREA H. McCarthy ANALYSIS FOR Fiber 07 Continued... 38 Hill Operator C. Handschfn Fiber 39 12/5/79 10 11 12 Hill Operator F. MarIncole Fiber 13 12/5/79 14 S 6 Hill Operator J. Zollo 7 8 12/5/79 9 Fiber 0 Saw Operator E. Cupid Fiber 1 2 12/5/79 - 3 4 Saw Operator A. Echadarrla Fiber 5 6 12/6/79 7 Saw Helper 8 12/5/79 0. Newman Fiber TIME 11:02a12:45p 12:45p1:45o 7:25a9:33a 4: Wa ll :20a H :20'a12:55o 12:S5p 1:45p 7:30a9:35a 4:35a11:20a 11:20a12:55o 12:5Sp1:45p 7:30a9:30a 7735a 11:20a 11:20a 12:55p 12:55p 1:45p 7:35a9:35a 9:35a11:25 a 11:25a12:55p 12:55p-- 1:45o 7:10a-7 4:50a11:55a 11:55al:40p 7:45a9:25a 9 ^Sa il :25a MIN. RESULT 103 0.39 f/ec TWA for Sample period REMARKS 12* Sewer Pipe 60 0.50 f/cc Finishing Line 2 128 0.26 f/ce 30* Coupling Hill FD 16 1.1 f/cc 107 0.55 f/CC 95 2.2 f/cc 50 2.5 f/cc 8* 3300 125 0.59 f/ec 30* Coupling Mill - FD IS 105 1.2 f/cc 2.0 f/cc 45 2.5 f/cc 8' 3300 50 6.2 f/cc 120 0.25 f/cc 42* Coupling M11I-FD 54 no 0.18 f/cc 16* Sewer Pipe 0.32 f/cc 95 0.42 f/cc 50 0.58 f/cc 120 0.29 f/cc Dry Coupling Saw - FD 9 110 0.52 f/cc* 0.59 f/cc 4* X 6* Couplings 90 1.16 f/cc 50 0.44 f/cc 0 VOID Employee Lost Cassette 125 0.41 f/CC Rework Saw FD 10 0.41 f/cc 105 0.40 f/cc 100 1.43 f/cc Rework Saw FD 10 120 0.54 f/cc 0.44 f/cc 8* 3300 9 11:25a- 140 0.37 f/ec 1:45p ( ( CTD018563 Position No: Location 79 (Date) Name/Area Analysis for Time Min. Result TWA for Sample Period 130 Lathe Operator 13' 132 (12-5-79) 133 * 134 Lathe Operator 135 136 (12-5-79) T. Gray W. Barnett Pfher Fiber 137 Hill Operator J. OeSIlva 138 139 (12-5-79) 140 41' Orlll Operator J. Diaz 42 43 (12-6-79) 44 Saw Operator N. Chancy 45 46 (12-5-79) Fiber Fiber Fiber 7;47-9:30a 9:30-11:25a 11:25-1:OOp 1:00-1:45p 103 0,38 f/cc 115 0.51 f/ce 95 0.31 f/cc 45 0.11 f/cc 0.37 f/cc i 7:50-9:30a 9:30-12:55p 12:55-1:45p 100 205 50 0.38 f/cc 0.31 f/cc 0.38 f/ce 0.70 f/cc i 7:55-9:32a 97 9:32-11:25a 11:25-1:00p 1:00-l:45p 113 95 45 0,13 f/ce 0.22 f/ce 0.48 f/cc 0.35 f/cc 0.28 f/ec 7:10-9:50a 9:50-11:55a 11:55-1:40p 160 125 105 0.66 f/cc D.34 f/cc 0.29 f/cc 0.46 f/ce 8:45-11:25a 11:25-1:OOp 1:00-1:45p 160 95 45 1,88 f/ce 1.69 f/ec 3.84 f/cc 1.66 f/cc 17 Lathe 18 -rator 19 , 12-6-79) E. Moore Fiber 0 Finishing Supervisor (12-5-79) 51 Sweeper 52 Operator (12-6-79) R. Grudzlnskl Fiber H. Dukes Fiber 7:40-9:52a 132 9:52-11:55a :i23 11:55-1:40p :i05 i l:15-2:OOp 345 1.2 f/ce 1.1 f/cc 1.0 f/cc 1 1 0.14 f/cc 1 1.1 f/cc 0.14 f/ce 10:10-12:45 165 12:45-3:00p 135 0.21 f/cc 0.35 f/cc 0.28 f/CC 153 Electrician 154 (12-3-79) 55 Mechanic 56 (12-6-79) C. Beaver J. DeHarlo Fiber Fiber 7:15-9:10a 115 0.84 f/cc o an f/ee* 9:10-1:45p 275 ~"OF77cc 7:40-12:40p 300 12:40-3:00p 140 0.41 f/ec 0.36 f/cc 0.39 f/cc Remarks NeSel Lathe fD 8 6* 4 8 " FHS Sebastion Lathe FD 20 Laman Lathe FD 7 16* Pipe Universal 8or1ng Mill FD 13 6" Pipe Korlt Orlll Wet Saw 16* '150 1 Pencil Sharpener ; i i i i 1 Working on Finishing Line n I I II CTD018564 I Industrial Hygiene Survey Ambler A/C Pipe Plant 12/3-7/79 TABLE 2 Engineering (Non-Personal) Samples | NO. i 201 ! POSITION LOCATION (Date) NAME/AREA Fiber Warehouse Area Sample 12/7/79 ANALYSIS FOR Fiber TIME MIN. RESULT 8:50a- 275 1:25p 0.48 f/cc i REMARKS' 202 Fiber Dump Station 203 12/3/79 Area Sample Just below damper. Fiber 9:25a- 30 9:55a 12:35p 130 2:45p 2.4 f/ec Pump hanging on frortof dump station 1` above opening. 0.56 f/ec 204 Total Oust 9:55a- 160 0.10 mg/H3 Manufacturing 8* 2400 pipe. 12:35p 20S Fiber Dunq> Station 206 1/29/80 Area - Just below damper Fibers 207 Fiber Dump Station 208 1/28/80 Area* Just below Fibers damper 6:588:40a 12:35p 1:57p 102 82 6:42a7:31a 49 l:20p- 52 2:12p 0.86 f/cc 1.05 f/cc 206. Made 2 duaps. \ 0.11 f/cc 207, Dumped 6 minutes. 0.22 f/cc 208, Dumped 5 minutes. 2nd Floor Manufacturing 12/7/79 Area Sample 210 2nd Floor Area Saaiple Manufacturing 12/7/79 Fiber Fiber 7:55a- 335 1:30- 0.82 f/cc Near mixers, manufacturing 6* 150 pipe. 7:55a- 335 l:30p 0.79 f/ec Near fines bln. 211 Blender Area Area Sample Ftber 212 12/3/79 2 ft from Mixer Motor. Retgttt S ft. 9:23a10:00a 12:301:35p 37 65 0.80 f/cc Near 14 Mixer 1.3 f/ce Manufacturing 8* 2400 pipe. 213 l:35p 70 1.8 f/ce 2: 4Sp 214 Total Dust 10:00a 150 0.74 f/cc I2:30p . 21S Blender Area Area Sample Fiber 216 12/6/79 2 ft. from Mtxer Motor. Height 5 ft. 217 " - 3:25p- 95 5:00p 5:00p- 60 6: OOp 6:00p- 30 6:30p 4.3 f/ce Near #4 Mixer 5.0 f/cc Manufacturing 6* 150 pipe 3.5 f/cc CTD018565 i [.Industrial Hygiene Survey Ambler A/C Pipe Plant !12/3-7. 1979 TABLE -- Engineering (Non-Personal) Samples NO. i i I 218 i 219 1 POSITION LOCATION (Date) Blender 1/28/80 NAME/AREA ANALYSIS FOR Area-Hetght si ft 2 feet from Mixer Motor Plbers TIME MIN. RESULT REMARKS 6:484- 42 7:30a 1:13p- 59 2:12p 0.27 f/ec Blender started approximately 7:15 am. Q.39 f/cc 220 Blender 221 1/29/80 222 223 i Area-Height 5 feet. 2 feet from Mixer Motor Fibers 6:58a- 72 8:06a 8:06a 164 10:50a 10:50a 100 . 12:30p 1.13 f/ce 220 1 221, men scraping and painting #4 mixer frame. 0.34 f/cc 0.40 f/ec 12:30p 94 2:04p 0.43 f/cc 224 Trough Area 225 12/3/79 226 / 228 Trough Area 229. 12/6/79 230 231 Trough Area 12/7/79 232 Trough Area 233 1/28/80 234 Trough 235 236 1/29/80 237 l Area Sample Fiber 9:20a- 40 10:00a i?a? 60 1:35p- 70 2:45p Total Dust 10:00a 155 12:35p 14.1 f/cc 6' from floor above mix trough. \ 6.1 f/ec Manufacturing 8* 2400 pipe. A 9.7 f/cc 3.7 aq/H3 Area Sample Fiber 3:25p 95 5:00p 5:00p- 60 6:00p 6:00p- 35 6:3Sp 2.8 f/cc 6' from floor above mix trough. 3.0 f/cc 6.3 f/cc Manufacturing 6" 150 pipe Area Sample Fiber 11:45a- 90 l:15p 5.6 f/cc 3' from floor on rail at trough. Manufacturing 6* 150 pipe. Area Height 5 feet above covered viewing hold. Fiber Area-Height 5 feet above covered viewing hole. Fibers 5:45a- 45 7:30a 1:13p- 61 !:12p 7*01 67 8:08a 8:08a- 166 10:54a 10:54a 95 12:30p 12:30p 94 2:04p 0.51 f/cc 1.51 f/ec 232, No visible emissions In trough area. Sthrtup 7:30am 233, Water level stayed constant, little steam or dust produced. 0.79 f/cc 0.45 f/cc 1.13 f/cc 0.72 f/cc CTD018566 ;Industrial Hygiene Survey .Amblar A/C Pipe Plant 12/3-7/79 TABLE 2 Engineering (Non-Personal) Samples NO. 1 POSITION LOCATION (Date) NAME/AREA ANALYSIS FOR TIME MIN. RESULT REMARKS 238 Machine Control Area Sample Panel On console. 23g Fiber 9:30a- 25 9:55a. 12:30p 80 1:50p 2.1 f/cc Manufacturing 8* 2400 pipe. 1.4 f/cc 240 Total Dust 241 Machine Control Area,on top of Panel console 242 1/28/80 Fiber 243 Roll Up Area 244 12/6/79 Area Sample Ftber 9:55a- 160 12:35o 6:S0a- 40 7:30a 1:13p- 59 2:12p 3:25p no5:15p 5:T5p- 80 6:35p 1.4 mg/M3 0.37 f/cc 4.69 f/cc VOID Heavy particulate not countable 7.3 f/cc Manufacturing 6* 150 pipe. 245 Roll Up 246 1/29/80 1/29 '80 247 Area under deck next to Machine Operator's Control Box. Fiber 7:02a 68 8:10a 8:10a 104 9:S4a 12:37p 83 2:00p 0.46 f/cc 0.20 f/cc 246, 20-24* pipe 0.61 f/ee 247, 8* pipe. J Pipe Machine 249 250 1/29/80 251 252 Area-Samples - Fibers 253 Machine Plot* Area Sample Fiber Trough at valves, ftetghi 12/3/79 4 feet. 254 Tunnel Entrance Area Sample Fiber 12/3/79 Between 6fn and workers. 255 Pipe Stripper Area Sample Area - 12/6/79 Fiber 7:10a 97 8:47a 8:47a- 96 10:23a 10:24a 129 12:33p 12:33p 77 1:50p 10:33a' 181 l:34p 6:35a- 30 7:05a 6:55a- 8 7:03 2:35p- 250 5:45p VOID 248, Above rollup 0.94 f/ec VOID 249, Center machine, upper level, on catwalk next to vacuus. 250. West side upper level, near vacuta. 1.08 f/ce 251, West side upper level, on catwalk toward fiber.. VOID 0.97 f/ee 252, East side just above cyllnde 248, 250, 252 - Heavy particulate not countable. Taken at start up cylinders being Installed, Manufacturing 8* 2400 pipe. 4.3 f/cc Clean up of scrap pipe before production. 0.59 f/cc Pusp hanging S' above pipe on tunnel conveyor. 256 Crusher Area 12/7/79 Area Sample Ftber 258 I I 7:45a- 130 >:55a 3:55a-- 80 11:15a 11:15a- 135 I:30p 0.32 f/cc At entry to Crusher 1.5 f/ec 0.52 f/cc CTD018567 Industrial Hygiene Survey Ambler A/C Pipe Plant 12/J--7/79 | No. POSITION LOCATION (Date) NAME/AREA TABU 2 Engineering (Non-Personal) Samples ANALYSIS FOR TIME MIN. RESULT REMARKS- 259 Crusher Area 260 12/7/79 261 1 Area Sample Fiber 7:45a- 130 9:55a 9:55a 80 11:15a 11:15: - 135 1:30p 5.5 f/cc t2.4 f/ec In crusher area hanging'on rail near Isle. , 3.3 f/cc' 262 ! Crusher Area Area Sample Fiber 7:45a 130 9:55a 0.58 f/cc In'crusher area hanging bn rail near wall. 263 12/7/79 9:S5a 80' 11:15. 0.91 f/ce 264 - 11;15< 135 1:30p 1.1 f/cc % /\ ' 1 - .' CTD018568