Document NNy5YEY3pREy72ONoxnbR29Dp

UjO' Ocfo 4 /V' INDUSTRIAL HYGIENE MONITORING FOR ASBESTOS TO: R. F. Painter , Trlr. 5583 511 Computer Ref . W-1076 CC: C. W. Carman, 725-105 G. F. Hurley, 701-334 L. R. Noble, 511-2149 PERSON MONITORED D. R. Paugh, 511-2009 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 E. J. Tawney, 5583 R. G. Rowe, M .D., 753 R. J. Sexton, M.D.,51 Location Bldg. 777 - Room 111 Date 8/19/80 EXPOSURE RESULTS Sample 1 2 3 Cone. fibers Sampling _ . Time 10.1 5 nm/cm 3 118 minutes 7 Comments P.M. - Wetting and bagging insulation and cleaning up area 4 5 6 Time-Weighted Average Concentration (TWA) 2. 5 fibers > 5 tim/cm3 Ceiling Concentration ____ ALLOWABLE EXPOSURE --- - TWA 2 fibers > 5 iim/cm3 (oSHAJ Ceiling _______________________ OSHA UCC UCC Other Other COMMENTS Even though the workers had been advised to keep the insulation well wetted, it didn't appear as if they had done so. INDUSTRIAL HYGIENE MONITORING FOR ASBESTOS TO: r. f. Painter, Trlr. 5583 511 Computer Ref. w-1076 CC: c. W. Carman, 725-105 G. F. Hurley, 701-334 D. R. Paugh, 511-2009 E. J. Tawney, 5583 H. L. Robinson, 701-401 R. G. Rowe, M .D., 7 L. R. Noble, 511-2149 E. C. Shipley, 511-2009 R. J. Sexton, M.D. , 512 PERSON MONITORED ____________________ ____________________ Location Bldg. 777 - Room 111 Date _____8/19/80 EXPOSURE RESULTS Sample 1 2 Cone. fibers > 14.4 5 jim/cm 3 Sampling Time z Comments 125 minutes P.M. Stripping insulation and cleanup of area. 3 4 5 6 Time-Weighted Average Concentration (TWA) Ceiling Concentration o 3.8 fibers > 5 pm/cmJ ALLOWABLE EXPOSURE TWA 2 fibers > 5 tim/cm3 (oSHA^? UCC Ceiling _______________________ OSHA UCC Other Other COMMENTS The concentration of fibers was as great the second day even though the men had been advised to keep the insulation well watered. WORK BY /]^ APPROVED BY UCC 017449 (JJO o9 O ( INTERNAL CORRESPONDENCE -------------------------------------------------------------------------------------------------------------- CHEMICALS AND PLASTICS To (Name) Division Mr. D. L. Johnson 511-5518 (512) location - Copy to Mr. C. W. Carman Mr. G. F. Hurley Mr. C. R. Johnson Mr. D. R. Paugh Mr. P. A. Perry Mr. C. E. Richardson Mr. H. L. Robinson Mr. E. C. Shipley P. 0. BOX 8361, SOUTH CHARLESTON, WEST VIRGINIA 25303 Date November 16, 1979 Originating Dept Technical Center IH/EP Subject Asbestos Monitoring 704 Powerhouse, First and Second Level / PROJECT Determine the exposure of Construction workers to asbestos fibers during insulation stripping in Building 704. DATE OF SURVEY October 26, 1979 DISCUSSION On October 26, 1979, separate breathing zone samples were taken on <. 1, and F to determine their exposure to asbestos fibers. They were stripping and bagging approximately thirty feet of an 8-foot by 6-foot exhaust duct coming from No. 3 boiler in Building 704 - Powerhouse on the first and second levels. During the - stripping and clean-up procedure all Construction workers wore Norton disposable dust respirators, gloves, and coveralls. All others who needed to be working in the 704 Powerhouse operating area were given 3M disposable dust masks to wear during the strip ping. Because the duct was hot and electric motors were situated near the duct, the insulation was only minimally wetted with a garden sprayer. The dust created by the stripping and throwing the insulation to the floor became so heavy that the insulators were advised to UCC 017450 Mr. D. L. Johnson 2 11/16/79 hand the insulation to the laborers to be bagged. The stripped asbestos was placed in plastic bags for disposal. When the dust became so heavy at the site of stripping on the second level, samples were taken on the first level on the north and south side of the stack. After the stripping of the pleted and the dust had settled taken on stripped insulation and cleaned duct on the second level was com some, breathing zone samples were as they finished bagging the the second level area. When the stripping started on the first level, only area sample were taken. Two samples were taken on the first level on, the north and south side of the stack, and one sample was taken on the west wall north of the stack on the second level. All area samples were placed at breathing zone level. CONCLUSIONS The dust collected on the breathing zone samples of ' - -- . _ ? was so heavy that it was impossible to determine the concentration of asbes tos fibers on these samples. The results of the other samples are given in the attached table. Since asbestos levels were so high on samples taken after some of the initial dust had cleared, they were likely higher during the period of greatest dust concentrations. Since all people in the area wore masks they were probably protected if a good mask fit was obtained. RECOMMENDATIONS It is suggested that all Construction workers that are involved with the stripping and disposal of suspected asbestos containing insulation be shown the Industrial Hygiene slide presentation on the proper handling of asbestos containing materials. REFERENCES Volume 38C-29X4-Rla Asbestos, Dust Determination By Membrane Filter Technique Using Phase Contrast Microscopy UCC 017451 INDUSTRIAL HYGIENE MONITORING FOR L(jO^ 6 6C/J & ASBESTOS TO: R. F. Painter , Trlr. 5583 511 Computer Ref. W-1075 CC: c. W. Carman, 725-105 G. F. Hurley, 701-334 L. R. Noble, 511-2149 PERSON MONITORED D. R. Paugh, 511-2009 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 E. J. Tawney, 55; R. G. Rowe, M.D. 7 53 R. J. Sexton, M.I 512 Location Bldg. 777 - Room 111 Date 8/18/80 EXPOSURE RESULTS Sample 1 2 3 4 5 6 Cone. fibers > 15.4 5 iim/cE 3 Sampling Time / Comments 41 minutes A.M. Stripping insulation 11.3 " 149 minutes P.M. Stripping insulation and helping with cleaning of area Time-Weighted Average Concentration (TWA) Ceiling Concentration 4.1 fibers > 5 itm/cm^ ALLOWABLE EXPOSURE TWA 2 fibers > 5 pm/cm3 (pSHA^> Ceiling _______________________ OSHA UCC UCC Other Other COMMENTS More water should be used to wet the insulation before stripping. Those stripping and bagging should always wear their disposable dust respirator while in the area and until the cleanup is finished. WORK BY APPROVED BY UCC 017452 INDUSTRIAL HYGIENE MONITORING FOR ASBESTOS TO: R. F. Painter, Trlr. 5583 511 Computer Ref. W-1075 CC: C. W. Carman, 725-105 G. F. Hurley, 701-334 L. R. Noble, 511-2149 PERSON MONITORED D. R. Paugh, 511-2009 H. L. Robinson, 701-401 E. C. Shipley, 511-2009 E. J. Tawney, 5583 R. G. Rowe, M.D., 7 R. J. Sexton, M.D. 512 Location Bldg. 777 - Room 111 Date 8/18/80 EXPOSURE RESULTS Sample 1 2 3 4 5 6 Cone. iiDer& 6.3 5 fim/cnr* Sampling Time 42 minutes Comments A.M. - Wetting and bagging insulation 3.9 149 minutes P.M. - Wetting and bagging insulation ana cleaning up area Time-Weighted Average Concentration (TWA) 2.8 fibers > 5 iim/cm' Ceiling Concentration _______________ ALLOWABLE EXPOSURE TWA 2 fibers > 5 jim/cm3 (jOSHA^) UCC Ceiling _______________________ OSHA UCC Other Other COMMENTS More water needs to be used in keeping the insulation wetted. Disposable dust respirators should be worn while in the stripping area and until the cleanup is completed. UCC 017453 Mr. D. L. Johnson 3 11/16/79 RESULTS DATE 10/26/79 SAMPLE TYPE Area 10/26/79 Area 10/26/79 10/26/79 10/26/79 Area 10/26/79 Area 10/26/79 Area TIME ASBESTOS FIBERS (MINUTES) (Fibers >5 {im/cm3) REMARKS 32/2 LPM 0.28 First level, north side of stack while dust was settling after stripping on the second level. Cleanup being completed on second level. 27/2 LPM 0.51 First/level, south side of stack while dust was settling after stripping on the second level. Cleanup being completed on second level. 15/2 LPM 3.93 Bagging insulation after stripping on second level finished. 15/2 LPM 2.97 Bagging insulation after stripping on second level finished. 51/2 LPM . 1.01 First level, north of stack while first level being stripped. 55/2 LPM 0.9 First level, south of stack while first level being stripped. 48/2 LPM 1.16 Second level, on west wall, north of stack while first level being stripped. REPORT PREPARED BY Ruth Clise Technical Center Industrial Hygiene Group Ruth Clise UCC 017454 Mr, D. L. Johnson REPORT APPROVED BY George F. Hurley RC/sc 4 11/16/79 / UCC 017455 U^u-oof0 UNION CARBIDE CORPORATION TECHNICAL CENTER P.O.BOX 8361 S. CHARLESTON, WY 25303 INTERNAL CORRESPONDENCE To: See Distribution List C.C. T. L. Collins T. E. Hanning C. P. Maxwell Date. July 22, 1986 Orig. Dept: HS&EA Area: Industrial Hygiene Subject: Amende^ AsbestosStandard On June 20, 1986 OSHA amended its present standard 29 CFR 1910.1001 for Asbestos which has gone into effect on July 21,1986. A summary of the changes In the health standard has been prepared by T. E. Hanning of our Health, Safety and Environmental Technology Group is attached for your review. A significant difference in the new standard Is the permissible exposure limit now reduced from 2.0 fibers per c.c. (f/c.c.) to 0.2 f/c.c. with an action level of 0.1 f/c.c., 8-hour time-weighted average (TWA8). A ceiling limit of 10 f/c.c. is no longer applicable in the amended standard. The amended standard will result in a few changes In how we handle asbestos containing materials. These changes are mainly relative to exposure monitoring techniques (Industrial Hygiene responsibility), posting, training and protective equipment. We will provide guidance to those groups who are involved in handling asbestos containing materials. All questions relative to compliance with this standard may be addressed to this writer. Attachment/ MAP Manhar A. Patel Technical Center Industrial Hygienist UCC 017456 UNION CARBIDE CORPORATION ENGINEERING, MANUFACTURING AND TECHNOLOGY SERVICES DEPARTMENT . ,r, HEALTH, SAFETY AND ENVIRONMENTAL TECHNOLOGY SOUTH CHARLESTON, WEST VIRGINIA \\V- A' 0 ^ MEMORANDUM July 11, 1986 TO: S. W. Clark 0. A. Gosselln V. H. Johnkoskl J. A. Leonard J. B. Levertony C. P. Maxwell / J. E. Neff T. P. Raby FROM: T. E. Hanning SUBJECT: Final Rules for Occupational Exposure to Asbestos, Tremollte, Anthophylllte, and Actlnollte (Amended Standard) JUL 1?W6 M- * PATEL t Gentlemen: Attached Is a preliminary summary of the changes between the amended subject health standard and the original asbestos standard as stated In 29 CFR 1910.1001. The amended standard was published by OSHA In the Federal Register on June 20, 1986 and will take effect on July 21, 1986. The Safety and Health Technology Manual health operating practice SH-256 (Removal and Handling Asbestos Containing Insulation Material) will be revised to reflect the changes set forth In the amended OSHA standard. Please call If you have further questions or comments. TEH/jc Attachments UCC 017457 Changes Between the Original and Amended Asbestos Occupational Health Standard General OSHA amends Its present standard (29 CFR 1910.1001) regulating occupational exposure to asbestos by developing two final standards that apply to general Industry and to construction because the differences In exposure and work place conditions In general Industry and construction work sites warrant separate treatment. UCC activities would generally fall under the revised standard for general Industry. OSHA has concluded that chemically modified asbestos should be regulated In the same manner as unmodified asbestos. OSHA concludes that all forms of tremollte, anthophylllte and actlnollte should be regulated under the revised standards. In the final standard the action level has been set at 0.1 fibers per cubic centimeter (f/cc) which triggers the monitoring, medical, and employee Information and training requirements. This action represents no real change to the standard with regard to this provision, but merely clarifies OSHA's policy. Permissible Exposure Limit OSHA has reduced the current 2 f/cc permissible exposure limit (PEL) to an 8-hour time-weighted average (TWA) PEL of 0.2 f/cc. This lower limit should reduce the recorded mortality from lung cancer, mesothelioma, gastrointestinal cancer, and other types of cancer due to asbestos exposure. Celling Limit The amended standards do not designate a celling limit for exposure to asbestos. The original standard had a celling limit of 10 f/cc and was met through engineering and work practice controls. Exposure Monitoring The table below lists the two exposure situations along with the monitoring frequency for each. Exposure Scenario Required Monitoring Activity 1. Below action level 1. No monitoring required 2. At or above the action level -------- 2. Monitor exposure at least every 6 months -2- UCC 017458 The amended standard requires the employer to collect airborne asbestos samples using 25 mm diameter mixed cellulose filters and a 50 mm extension cowl. Samples must be analyzed using a phase contrast microscope calibrated using a phase shift test slide and equipped with a Walton-Beckett graticule. The filter samples must be prepared using acetone-trlacetln clearing solution and be counted In accordance with the "AM rules contained In the NIOSH 7400 method. Regulated Areas The amended standard requires employers to Identify as regulated areas any locations In their work places where there may be occupational exposures to airborne concentrations of asbestos above the PEL. The amended standard prohibits eating, drinking and smoking In these areas. Only authorized persons may enter regulated areas which must be clearly marked. The existing OSHA standard does not contain a provision for establishing regulated areas. Methods of Compliance The amended standard requires employers to Institute engineering and work practice controls to reduce the exposure of employees to or below the PEL. If the employer establishes that such controls are not feasible, selected respirators may be used to supplement the engineering and work practice controls. Respiratory Protection Respirators may be used to limit employee exposure to asbestos In the following circumstances. 1. During the Interval necessary to Install or Implement feasible engineering and work practice controls, 2. In work operations such as maintenance and repair activities or other activities which the employer establishes that engineering and work practice control procedures are not feasible. 3. In work situations where feasible engineering and work practice controls are not yet sufficient to reduce exposure to or below the PEL. 4. In emergencies. These limitations on the required use of respirators are consistent with the requirements of the past asbestos standard and with good Industrial hygiene practice. Protective Work Clothing and Equipment The final standard makes a change from the current standard to respond to the evidence developed since 1971 that asbestos Is a potent human carcinogen. Protective clothing Is to be supplied to employees exposed above the PEL of 0.2 f/cc. -3- UCC 017459 The final standard provides that the employer ensure that all protective clothing Is removed at the end of each work shift only In change rooms. The standard emphasizes the need to assure that contaminated clothing Is stored, cleaned/laundered, or disposed of In a safe manner. The final standard clarifies that the obligation Is on the employer to provide personal clothing at no cost to the employee. The final standard also requires the employer to Inform those who handle the contaminated protective clothing of the potentially harmful effects of exposure to asbestos. Hygiene Facilities and Practices The final standard like the existing standard reiterates the type of change room an employer must provide and the requirement that the employer prohibit the consumption of food and beverages In areas where there Is exposure to toxic substances. Unlike the existing standard, the final / standard requires employers to assure that employees exposed to asbestos during their work shift shower before leaving the plant and do not leave wearing work clothing. The final standard requires employers to provide persons working In asbestos areas with filtered air lunchrooms which are readily accessible. Employers must also assure that employees wash their hands and face prior to eating or smoking and do not enter the lunch room wearing protective clothing, unless cleaned beforehand. Communication of Hazards to Employees The final rule for asbestos requires that legible caution signs be posted at each regulated area where occupational exposures could exceed the PEL. Signs must also be posted at all approaches to areas containing excessive concentrations of airborne asbestos fibers. Signs must bear the following: Danger - Asbestos; Cancer and Lung Disease Hazard - Authorized Personnel Only; Respirators and Protective Are Required In This Area. The final standard Is not substantially different from the present OSHA standard. The section on sign specifications simplifies the sign requirements and eliminates unnecessary detailed specifications (letter sizes and styles, spacing between lines) In favor of a more performance oriented approach. -4- UCC 017460 The amended standard also requires that all raw materials, mixtures, scrap, waste, debris, and other products containing asbestos fibers, or their containers, be labeled with the appropriate Information. Danger - Contains Asbestos Fibers; Avoid Creating Dust; Cancer and Lung Disease Hazard. The new standard allows two exceptions to the labelling and material safety data sheets <MSDS) requirements; no label or MSDS Is required In those Instances where Asbestos fibers have been modified by a bonding agent provided that the manufacturing can demonstrate that during any use the employee will remain below the action level; or Asbestos Is present In a product In concentrations less than 0.1%. The new standard updates the existing standard by, providing that airborne concentrations must be kept below the action level rather than the PEL. The final standard requires employers to provide a training program for all employees expected to be exposed to airborne asbestos at or above the action level of 0.1 f/cc. Housekeeping Unlike the existing standard which requires that surfaces be maintained free of accumulation of asbestos fibers If, with their dispersion, there would be an excessive concentration, the revised standard removes the ambiguous phrase of excessive concentration. Specific provisions for house keeping are Included In the final rule. Some of these are prohibiting the clean-up of asbestos dust with compressed air, dry-sweeping and dry clean-up. ,and4)roh 1 b Itlng thecaecumulation of asbestos waste on surfaces. OSHA anticipates that compliance with this provision will entail a regular housekeeping schedule based on exposure conditions at a particular plant and the capability for emergency cleanup of spills or other unexpected source of exposure. Medical Surveillance The final standard requires that the medical surveillance program provide each affected employee with an opportunity for a comprehensive annual medical examination. This does not change the provisions of the existing standard. In the final standard however, OSHA believes It appropriate to trigger the medical surveillance requirements at the action level of 0.1 f/cc as an eight-hour TWA. OSHA has also revised the time within which the employer must conduct preplacement examinations after hiring employees. The final standard requires that preplacement medical examinations be given prior to the assignment of an Individual to a Job exposed to concentrations of airborne asbestos. The current standard permits the employer to conduct medical examinations within the first 30 days of the hire date. -5- UCC 017461 The employer Is also required to have medical examinations performed by or under the supervision of a licensed physician, provide the physician with a copy of this standard and all work practice Information performed by the employer, and obtain a written signed opinion from the physician containing the results of the medical examination. The final standard requires that x-rays be offered at 5 year Intervals during the 10 years following an employee's first exposure to asbestos. After 10 years the employee's age category will determine the frequency of x-ray testing. Record Keeping The final rule provides that records be kept to Identify the employee monitored and to reflect the employee's exposure accurately. The employer Is free to keep records the most effective way. The time period required for retention of exposure records Is thirty years. Employers must notify the Director In writing at least 3 months prior to the disposal of any records. Appendices f Eight appendices are Included In this final standard. Appendix Status A - Reference Method for Analyzing Air Samples for Asbestos Mandatory B - Asbestos Sampling and Analysis by NI0SH Method 7400 Mon-mandatory C - Qualitative and Quantitative Respirator kit testing Procedures Mandatory D - Medical Questionnaire Given to Employees Who May Be Exposed to asbestos Mandatory E - Interpretation and Classification of Chest Roentgenograms Mandatory F - Work Practice and Engineering Controls for Automotive Brake Repair Operations Non-mandatory G - General Technical Information on Asbestos Non-mandatory H - Medical Surveillance Guidelines Non-mandatory TEHtJc 07-10-86 5122D -6- UCC 017462 R/D GRADE 12 AND ABOVE C. D. Aik man F. E. Andrews K. W. Applegate R. A. Baehl R. G. Baier R. R. Banister H. N. Baylor L. L. Bissett E. H. Blair Max Blair W. D. Bradbury T. L. Collins R. A. Conway G. H. Coppala H. D. Cox G. A. Coyer D. A. Deckman R. A. Derr C. K. Dolan P. D. Franson J. R. Gagnon R. E. Gardner B. J. Barner D. L. Garrison D. A. Green R. E. Harris F. L. Harvey D. E. Heath R. E. Jenkins P. R. Kavasmaneck K. S. Kincaid H. P. Krog 0. W. Lanham R. W. Martin A. M. McClain M. P. McCready B. R. McMakin R. L. Morgan R. G. Meadows C. C. Neely K. D. Negley L. R. Noble J. F. Oaks W. E. O'Neil J. T. O'Neil D. E. Pauley J. B. Rader R. J. Romagnoli G. M. Rosengarten R. G. Rowe, M.D. R. W. Scoular L. L. Simpson R. 0. Spencer B. G. Summers B. H. 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