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4 INDUSTRIAL HYGIENE SURVEY OF SELECTED PLANT OPERATIONS Tyler Plant, Pittsburgh-Coming Corporation Tyler, Texas - ' - May 7, 1969 *` s* * t* , . , by *' /Morton Com, Ph.D. , m ^ ` M`* 4%# ,\ o THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NO.TCOME FRbM IT'S FILES AND CANNOT BE AUTHENTICATED. BY PPG INDUSTRIES, INC. I* * (* I BB 0023760 | TABLE OF CONTENTS Page X. INTRODUCTION ......................................................... 1 IX. SUMMARY AND RECOMMENDATIONS ................................. 3 III. THRESHOLD LIMIT VALUE FOR ASBESTOS ....................................... 5 IV.' DESCRIPTION OF SAMPLING ANDANALYTICAL METHODS ... 8 V. RESULTS AND DISCUSSION.................................................................... 11 * # VI. ACKNOWLEDGEMENT .............................................................. -21 APPENDICES , APPENDIX A: 1. Letter from W. R. Blair, Regional ' Director, U. S. Department of Labor, Dallas, Texas, to J. H. Bierer. 2. Letter from B. M. Stout to W. R. # Blair. ' - 3. letter from . Corn to W. R. Blair APPENDIX Bs Duct Velocity Determinations (Primary . Data and Calculations). 4 APPENDIX C* Photographs of Selected Plant Oper- ** ations *** 44 t - ' * S . s * ` .. . .1 " e 1: . * . ' ,. THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE-AUTHEN11CATED BY PPG INDUSTRIES, INC. 1. , - | BB 00 2376*1 | 4M> 1 * 54.57 * ... I. INTRODUCTION A survey to d termite the adequacy of the existing ventilatio system and associated dust collection equipment to contr 1 air borne dust was performed in the production area of the Pittsburgh Coming Tyler, Texas plant on Hay 7, 1969 by Dr. Horton Com. Dr Corn was accompanied and assisted by Hr. John L. Hyde, of the En gineering Section, Pittsburgh-Coming Research Center, 800 Presqu Isle Drive, -Pittsburgh, Pennsylvania 15239. The surv y was per formed at the request of Hr. Byrl H. Stout, Vice President of Han: facturing, Pittsburgh-Coming Corporation. The request was made on April 28, 1969 at the Pittsburgh-Corning Research Center durin< a meeting called to discuss the enclosed citation of the Tyler plant by the Department of Labor (see Appendix A). The survey was concentrated exclusively on assessment of hygienic risk to airborne amosite asbestos dust and evaluation of plant facilities to reduce this risk. * During the period of the survey outdoor weather conditions we: clear, sunny and warm, with temperatures in the 70-80"F rang Humidity was high. (Relative humidity in plant approximately 75**).* ' The author is unaware of any special precautions tak n to an-, sure that the ventilation system was operating in anything but * the "normal" mode during this survey. Therefore, results of mea surements made in this survey must be considered representative of conditions in the plant during summer months when doors and windows are.open. In general, winter conditbns impos more *. e Heasured at 11:45 AH in plant. ** " this, document was not a record of PPG INDUSTRIES, INC. DID NOT. COME FROM IT'S FILES AND CANNOT BE AUTHENTlCAi ED BY PPG INDUSTRIES, INC. i b 4, ^ a rI-.Sii -yS lJ ______ 5158 -J'bb' M762_l 2 stringent requirements n plant dust control systems b cause win dows and doors are closed to preserve heat. There is no benefit of 'dilution ventilation' from outdoor air. With the same facil ities jffor dust removal by a ventilation system, in-plant dust in air concentrations during winter months will usually exce d th se present during summer months. t __ *' % I* THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME PROM IT'S FILES AND CANNOT BE AUTHENTlCAl'ED BY PPG INDUSTRIES, INC. Bb"0023763_]_ - < < L_ \ 5159 Vi rnrVTTm"fTS 9m + *.. o II. a -T-J* ~~~* 1 : ' '* t. -J . * . - 7' ; SUMMARY AND RECOMMENDATIONS !'" ` An industrial hygiene and ventilation survey of this plant performed on May 7, 1969 suggests that asbestos fiber concentra-- tions are high in worker breathing zones (Builder p der Op* erators) and at breathing level in certain other plant locations. There are no hygienic guidelines for concentration of Amosite fibers in air and the judgment of excessive dustiness in this plant is referred to guidelines for Chrysotile dust. Utilization of hygienic guidelines for Chrysotile asbestos concentration in air for Amosite asbestos fibers in air is an accepted procedur in the U. S. at this time. The finding of excessive dustiness at "spot" sampling locations in the plant is consistent with sur- vey measurements which revealed inadequate quantities of air at local exhaust hoods. Insufficient air at local sites of dust emission was reflected in low air velocities at hood faces and low air conveying velocities in branch lines and ducts. The ven tilation system was estimated for Builder and Feeder areas to move approximately one sixth of the air required to ventilate these processes. In addition to the inadequacies of the ventilation system, aiyl the resultant excessive dustiness, it was found that general house-1 keeping is poor in the plant. Also, during the entire day of the survey not one employee in the production area was observed to - wear a respirator. In the opinion of the author, this short survey strongly *i r suggests that employees at this plant are being exposed, n a THIS BeeUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHEi JTICAED BY PPG INDUSTRIES, INC. ________ - 5160 TbB 0023T6^J, ------ ---* .>7 4 daily basis, to excessive concentrations of Amosite asbestos dust Zt is recommended that efforts be immediately focussed' on design i ,, of a complete ventilation and dust collection system at this plant. The system is rudimentary in concept and is underdesigned Efforts to "doctor up" this system would probably lead to a less than satisfactory system and would involve expenditures in * m and equipment equivalent to those associated with design of a new system. *K **'i THIS DOCUMENT WAS NOTM '"d caIot BE authenticated | BB 0023765J, ! 5161 r' *' "V III. THRESHOLD LIMIT VALUE OF ASBESTOS DUST "The threshold limit values refer to airborne cone ntrations of substances and represent conditions under which it is beli ved /* that nearly all workers may be repeatedly exposed, day after day, without adverse effect. Because of wide variation in individual susceptibility .exposures of an occasional individual at or ven below the threshold limit may not prevent discomfort, aggravation of a pre-existing condition, or occupational illness. "Threshold limits should be used as guides in the control of health hazards and should not be regarded as fine lines betw en safe and dangerous conditions."* The American Conference of Governmental Industrial Hygienists had, in 1967, a T.L.V. for asbestos of 5 million particles per cubic foot, as determined by impinger sampling and counting by light-field techniques. In a considered revision (1968), the Con ference endorsed the retention of this T.L.V. for "most forms of asbestos". However, for crocidolite, because of the production of mesotheliomas, it was recommended that workers be equipp d with air^Upplied helmets because "no safe limit can be establish d for this form of asbestos at this time." i , The British Occupational Hygiene society recently issued hy gienic standards for chrysotile asbestos dust.** The standards are based on the? 'objective that the risk of contracting asbestos - * Extracted from the Preface, Threshold Limit Values for 1968. American Conference of Governmental Industrial Hygienists, 1014 Broadway, Cincinnati, Ohio 45202. Ann. Occup. Hyg. 11, 47-69'(1968) I BB 0023766*"! *5162 Vf J- THII DOCUMENT WAS NOT A RECORD OF; \* . PPG INDUSTRIES, INC. DID NOT COME FROM' IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES. INC. 6 be reduced to 1 per cent of those who have a lifetime's exposure to the dust. By "asbestosis" the committee meant the earliest demonstrable effects on the lung due to asbestos. These standard: . are cited here because they are more stringent than the U. S. guideline referred to above. The exposure guidelines are: TABLE 1 BRITISH HYGIENIC GUIDELINES FOR ASBESTOS DUST DUST CATEGORY Negligible Low % Medium High CONCENTRATION,AVERAGED OVER 3 MONTHS Fibers/cm^ MPPCF* 0 - 0.4 0.011 0.5 - 1.9 0.014 - 0.054 2.0-10 - 0.054 - 0.28 Over 10 Over 0.28 The concentrations refer to fibers greater than 5 microns in lengt as determined by the membrane filter method. The problem faced today with respect to Amosite asb stos is that there simply is insufficient data for dosage-response pre diction of exposed populations.** The guidelines for Chrysotile will undoubtedly .continue to be the threshold limit value guid - line for exposure to other forms of asbestos dust for years to come. ,J # * In a survey of dust concentrations in the Unibestos facility Port Allegheny Plant of Pittsburgh-Corning, simultaneous impinger - *' , . f .# Million particles per cubic foot (as fibers) Stokinger, H. E."Development of TLV's for Fibrous Materials." Paper presented at- Special Session on Fibers, Annual Meeting of American Industrial Hygiene Association, Denver, Colorado, May, 1969. ' this document was not a record of --------------- . i gB o2376?_l 5163 -- n~> PPG' INDUSTRIES, INC. DID NOT COME EROM IT'S FILES. AND CANNOT BE AUTHENi ICAl ED BY PPG INDUSTRIES..INC.-- ------------ -------------------- ------ ------- arwi. membrane filter sampling was performed. The conversion -of 1 ,, * *4 /' ..values obtained by one-_ethc>d ta-those of the -other-method was - not possible* At each location/ the numbers of the fibers and particles varied. The impinger method is based on particles' while the membrane filter method assesse! Only fibers. ?or the *' 1 ,, * purposes of this preliminary survey, either method would yi Id data suggesting that airborne dust concentrations were acc ptabl * : *; nr U:acceptable. Therefore, the membrane filter technique was used and the British guideline As applicable (Table 1) IT'S FILES AND CANNOT BE AU1 Htl JTIwATfeU BY PPG INDUSTRIES, INC. i BB 00--2-3-7-6--8--I5.1.__6__4_ 7/  * * i 8 1r,,<_ : . ' ' J, I 'T ; j- IV. DESCRIPTION OP SAMPLING AND ANALYTICAL' METHODS ' -^ A. Assessment of Airborne Dust Samples were obtained at either worker breathing zones ^ * they performed their routine tasks, or at breathing lev 1 to r - present "background air". Samples were obtained during a five ox ten minute period at a flow rate of 21 1pm by utilizing a vacuum pump in conjunction, with a filter holder and sample filter. The system was precalibrated in terms of pump inlet pressure and air flow with all sampling line components, including filter, in place A membrane filter (Type EA Millipore) was used to obtain samples for microscopic evaluation of fiber' and dust particle concentrations. This paper is composed of pores 0.45 micro'ns in size and has been shown to retain, with 100% efficiency, par ticles down to 0.05 micron diameter.^ The filter was first visually examined to detect any loose dust or uneven dust deposition. In the few cases where the fil ter deposit did not pass this examination, it was necessary to re suspend the collected dust in distilled water'and refilter this suspension on VF grade Millipore filter to assure an even dust distribution over the entire filter area. A pie shaped segment, of the filter was then placed on a microscope'slide and r ndered completely transparent with Cargille certified index of refractic * liquids. Cargflie liquid of index of refraction 1.500 was usuall * most suitable. The counting of the dust particles and the count* ing and sizing of asbestos fibers was performed with th aid of a *j * ^Megaw, W. J. and Wiff n, R. D.* Int. J. Air "Water Roll. 1, 501 (1963). TH^ document was not a Record of ______ 1 tr-jce PPG INDUSTRIES, INC. DID NOT C?OME FROM \ IT'S FILES AND CANNOT BE AUTHENTICATED ***"""' * '' , . *>> ru`n,- .y '.V * 9 Zeiss Photomicroscope using Phase Contrast Illumination. Th ob jective lens was a Zeiss Neofluor Ph 63x with a numerical aperture of 0.90. The eyepiece had a magnification of 20x and contained a calibrated Porton graticule. The optovar feature of th Zeiss scope contributed to the total magnification of 2016x. Resolutioi was approximately 0.35 microns. Particles and fibers of size 0.3C microns could be detected. In the evaluation procedure, all particles and fibers in the Porton field of view were counted and the fibers were grouped by fiber length into three categories (less than five microns, five to ten microns, and larger than ten microns). This pr cedure was repeated foy a number of randomly selected fields on the face i of the filter. Because only a portion of the total filt r area was evaluated by this method, it was necessary to correct th count by the ratio of the total filter area to the evaluated area. The resultant particle or fiber number was divided by the volume of the air sample to obtain dust or fiber concentration express d as millions of particles per cubic foot (MPPCF). The statistical reliability of the evaluation was expressed as the standard deviation, calculated as N^2, where N is th I particle or fiber count. . The . procedure outlined follows, ' in its essential points, that recommended by J,.. R. 'Lynch and H. E. Ayer in their-article "Mea- surement of Asbestos Exposure" which appeared in the Journal of - Occupational Medicine, Volume 10, January,-1968. .* ' THIS DOCUMENT WAS NOT'A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FRO'* IT'S FILES AND CANNOT EE AUJHENTICAiEO BY PPG INDUSTRIES, INC. ii , 4 -------------------------- 7o'7 516G >_ *v. 10 B. Measurement of Air Velocities at Hoods A calibrated velometer was used to measure face velocit ies of hoods and room air velocities.* , C. Air Velocities in Ventilation Ducts A standard 1/4" dhmeter pitot tube was used in conjunct ion with a Dwyer 1:10 inclined manometer to determine velocity pressures in ducts. Ten point traverses were taken in larger ducts (>6" diameter); centerline readings only were obtained in smaller ducts. All measurements are considered to be approximate (estimated reliability + 10%) because of the conditions imposed by the system. For example, there were few locations where measure ments' could be made 10 diameters from entries or elbows. Also, the standard pitot tube should not be used.in lines smaller than 8* diameter. However, the reliability of measurements achiev d is perfectly adequate for a preliminary survey of the typ under taken here MGTEvir" NOT CCEi-- " t Alnor Velometer, Xllin is Testing Laboratory, Chicago, Illinois. THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES. AND CANNOT BE AUTHENTICATED RV PDf!5 IMnl lOmirr* -- B*j?23771 j 5167? f THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. V. RESULTS AND DISCUSSION 11 NOTEr-TH?*' T UGivsi ; i J A. Airborne Dust Concentrations Measured concentrations of dust particles and asbest s fibers are summarized in Table 2. In order to facilitate com parison with the guidelines from Table 1, the last two columns (5 and 6) of Table 2 for fiber concentrations have been added to yield Column 7, which should be compared with Column 3 of Table 1. On this basis/ operators at the feeders are receiving High exposures. Builder operators are also receiving High expos ures. Although much dust Is present at the cutting operation the * ` single sample obtained suggests that particles and not fibers are the major contributors to the dispersion. Table 2 suggests that outdoor air is Negligible in terms of fiber content/ as is the dust collector effluent.' However, the aisle of the wax house op posite the.Feeders is High, suggesting the large zone of influence of the dust sources in the Feeder areas. It cannot be too strong! stressed that these are *spot" samples and must be viewed as sug gestive results only. However, they do convey a picture of high dust exposures in Feeder and Builder areas, as well as In adjacent zones. The author must state, based on previous experi nc , that dust concentrations in plant air would almost certainly increase during winter months. B. Local Exhaust Hood Face Velocities - There are design guidelines for face velocities of air at local exhaust hoods? In general, a face velocity of 100 fpm is / * I S e Cl'aoter 5, Industrial Ventilation, 10th Ed. American Con ference of Governm ntal Industrial Hygienists, 1014 1j Cincinnati, Ohio. } ------------------; * I BB 0023772 | fit S M*e 'itfJtft'*-- .^ THi$ DOCUMENT of ,rsBiP?rP'SGPPINGD'IUSNS'DATUNRSDITE^CR!.iEo.,S,f*.t,sre*uiM,^*Mrd&-Bi"lndEcOAToUU,.TaT.MHH^5^sFTvwieEK^m-FA,RTOeoM y s TABLE 2 ASBESTOS FIBER CONCENTRATIONS AT SELECTED PLANT LOCATIONS Date and rime of Sample 5/7 2i30 PM 2*35 PM % 5/7 2*36 PM2*46 PM ' 5/7 2*50 PM- 5/7 3*05 PM3*15 PM 5/7 3*15 PM3*25 PM 5/7 3*30 PM3*40 PM iI --*4j Il 'Huy 3*45 PM- t-- t H> 3*56 PM <D 10 *. Description of Sampling Site Bjreathing zone of Feeder Oper ator, Lines 1 and 2 during sweeping, feeding* (Note* cooling fan at dust collector on.) Breathing level in Walkway ad jacent to Feeder No. 3. Effluent from Dust Collector Bags approx. 1" from Bag. Dust collector for Lines 1 and 2. Dust Partic! Le or Fiber Counts, Expressed as Millions of Partic] es Per Cubic Foot + Standard Deviation Total Fibers (Cols. Particles <5 M 5-10 u >10 u 5+6) 12.3+0.6 3.60+0.28 0.64+0.12 0.14+0.04 *7a *** TZC 10.5+0^5 2.9+0.2 3.40+0.19 0.71+0.09 0.34+0.06 0.06+0.03 0.14+0.04 0.02+0.02 0.48 /7 Z*?* ' 0.08 ?.ly fii** 1 Outdoor air sample at breath ing level on loading dock near Oil House. 1.5+0.2 0.16+0.04 0.03+0.02 0.05+0.02 0.08 Jt.Sy FiM-f-t J ^xX, breathing level in aisle, Uni- 35.0+1.7 bestos Warehouse opposite Feeder Lines 1 and 2. 1.26+0.12 0.18+0.03 0.10+0.02 0.28 Breathing zone of Builder Operator, Line No. 3 (3/4 x 1 Unibestos). Cycle of load ing, building, spraying, etc. Note: Fans on over Lines 2 and 3. 3.2+0.2 1.48+0.09 0.18+0.03 0.10+0.02 0.28 to Breathing zone of Builder Op 12.S+0.6 erator, Line No. 3. Cycle of loading, building, spraying, ... etc- NOTE THIS OtO VV.'V--- 1 IV! I !lii 4.02+0.20 0.20+0.04* 0.21+0.05 4 m 0.41 Mr ^6-- 3=(3n I*-- - Ic.so . 3c w O mcojfn*- mw _ 22 O P2 5> O2 Cm"D* ow 2o > 2 -4 s> Xm 88 m .. , 1 TABLE 2 (continued) 'N f O 2 -r, 5/7 4 *05 pm 4 * 15 pm Breathing zone of Operator, Large Cutting Saw. Ndtet Door adjacent to cutting operation open to outdoor air. 37.4+1.0 1.11+0.11 0.07+0.03 0.05+0.024 0.12 NOTE: THi"r fWT COME rii:..- ' recommended for control f fume and vapors, while higher veloci- % ties are not uncommon for control of materials emitted with' great force. At the Port Allegheny Plant, Mr. John Hyde, of Pittsburgh- Coming, and the author are designing for 200 fpm face velocity at i > hoods which interface with plant air: internal process hoo&s are designed for 100 fpm. Table- 3 is a summary of measured air velocities at select d hoods in the Tyler Plant. With the exceptions of the Build r hoods and the Scrap Grinder hood, face velocities at* hoods are inadequate. Smoke tube tests performed at each hood offered visu al confirmation of this conclusion based on'velocity measurements. Although the hood on the Intermediate Saw was satisfactory, it would not be" so' if two or more saws were used'simultaneously. . C. Air Flow Associated with Local Exhaust Hoods and Dust Collectors Figure 1 is a line' diagram of the ventilation ducts in the Feeder and Builder Areas. The duct locations- for Pitot tube tra verses are denoted by numbers. Table 4 is a summary of volum of air flowing at these points as determined on the day of this survey The values listed in Table 4 are probably overestimates because ce: v-<in of the ducts were partially clogged with settled fibers. Ail data and calculations for the Table 4 summary are included in Ap pendix B. * Table 4 an<f data in Appendix B indicate the following: .* 1. Air is very poorly distributed in the ventilation system. As an example, hoods 2, 3 and 4 for similar operations were allo cated 63, 391 and 202 cfm respectively. ______ THIS, DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM ' IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. -|----B--B----0-0--2- *3-7--7--5---1J ^171 $ * THIS DOCUMENT WAS NOTA Its FMSSAND CANNOT BE AUTHENTICAT ED 'by PPG INDUSTRIES, INC. INCITE: THlo f;"r * * -; TABLENO3 T COiVIE riiu.vi rVU i'.iLi UNIBESTOS LINES: SUMMARY OP HOOD AIR VELOCITIES Location / Line No. 1 40" Fiber Feeder*1* . . -- Site of Measurement* and Average Air Velocity, fpm** Left Side Center Right Side Top Middle Bottom Top Bottom Top Bottom 0 0 0 50 50 0 0 Note: Smoke tube test revealed poor control. Line No. 1 - 30" Fiber Feeder* - - * Line No. 1 30" Fiber Feeder* Left Side Center Right Side Top Bottom Top Bottom Top Bottom Left Side Top Middle Bottom 20 20-30 r 60 60 60 so 20 0 .0 Line No. 1 " 40* Fiber Feeder f Center Right Side Top Middle Bottom Top Middle Left Side Center Right Side Top Middle Bottom Top Middle Bottom Top . Middle Bottom 20 0-10 0-10 20-30 30 0 0 0 . 10, 10-30 10-30 0 20 20 Line No. 2 40%`Fiber Feeder (Note: Approx. 75% of hood face blocked by fiber) Left Side Center Right Side i Top Middle Bottom Top Top Bottom 50-100 75-100 75-100 30-40 30 50 +Room air in vicinity of feeders measured to be 30-40 fpm, South to North (fans off). Room air in vicinity of feed rs measured to be 300 fpm. South to North (fans n) _ JSltZ* ^ ] BB 0023776 | THIS DOCUMENT WAS NOT A RECORD^ OF h... PPG INDUSTRIES, INC. DID NOT COME FROM . IT'S FILES. AND CANNOT BE AUTHENTICATED NtfCOfcitiv.C./; BY PPG INDUSTRIES, INC, TABLE 3 (continued) Line No. 2 30- Fiber Feeder Stand by (not in use) Line No. 2 30- Scrap Feeder . Line No. , * 3 * 20- Scrap Feeder Left Side Center Right Side Left Side Center Right Side Top Middle Bottom Top Middle Bottom Top Middle Bottom Top Bottom Top Middle Bottom Top Bottom Left Side Right Side Top Bottom Top Bottom * 10-i 30. 20 20 40 30 0 40 20 75-1 100 100 100 75-1 125 75-1 0 20-3 0 30-4 Builder Hoods . Line No. 2 Line No. 3 Line No. 1 125-1 150 Invalid measurements be cause instrument could not be properly placed Smoke tube reveal d goot control. Scrap Grinder Hood Left Side Center Right Side . Top :Middle .Bottom Top' Middle Bottom Top Middle Bottom 75-l( 100-li| 150 75 t 7 5--1C I 100 50--71j 50-7 50-7! Saw Area: Intermediate Saw 200-3C +Large Rip Saw Off.- All measurements in vertical plane at hood face, unless otherwisl specified. Feet per minute. T'Ib 0023T77_I 5173 fl * i- .. f' *< l .... V . * * \ 18 N r ' TABLE 4 SUMMARY OP VOLUMETRIC AIR FLOWRATES- IN DUCTS IN FEEDER AND BUILDER AREAS Duct Number (Figure 4) Feeder Areas 1 2 3 4 5 6 7 ** Builder Area: 8 9 Air Flow, Cubic Feet Per Minute t * * 2,769 63 391 202 1,940 183877 1,724 810 - j bB 0023779^1 . ,5175 ' ^ r s,SST "tnot " om S AND CANNOT BE AUTHENTICATED 19 2. Conveying velocities within ducts axe generally very 1 w" for handling asbestos dust. A minimum design velocity of 4000 fpm is being used for the new ventilation system.* Duct 7 (Scrap Grinder Hood) and the 10" diameter duct into the Block Dust Col lector were the only ducts with adequate air velocities for con veying asbestos dust. 3. Total air volume for the Builder and Feeder areas is very low (2769 + 1724 + 877 cfm). Estimates for Port Allegheny place the air requirements for adequate control for three lin s at ap proximately 6.5x timesthis amount of air. In summary, as judged by three different parameters, i.e. dust concentrations, face velocities at hoods, and duct air vol umes, the ventilation system, and hence dust control at this plant, are unsatisfactory. NOTE* ^ ' D. General Housekeeping Mf)T r IVU I U/rflC fiio-.,! .Vo v In general, housekeeping is judged to be poor at Oils plant. Appendix C is a selection of photographs taken during this survey. Asbestos dust is on all surfaces as well as in the air.' It was noted that with the exception of Mr. Hyde and the author not a single person in the plant wore a respirator. It ' can only be concluded that Amosite fiber at this plant is not being handled with the care and respect that any subst&hce with this toxic potential deserves. . '* .* v *- The practice of exhausting bag dust collectors to plant air would not be permitted in the states-of Pennsylvania and New e> York. Air cannot be recirculated when toxic substances are 5I7S I BB 002378JM * V- Port Allegheny Plant. 20 involved. In the case of nuisance substances, recirculation is permitted if the recirculated air contains the toxic agentin concentrations less than 20% of the Threshold Limit Value. NOT NOT 5v' -i. U * i I.L. J <*; document was not * RECO ^ apQ industries, INC. *V I BB 5177 *>| 'Um 21 VI. ACKNOWLEDGEMENT The author wishes to express his appreciation to Mr. John L. Hyde, of Pittsburgh Coming Corporation. Mr. Hyde provided int valuable assistance with survey measurements. NO t L.'. N0T \ THIS DOCUMENT WAS NOT A RECORD> OF /'PPG INDUSTRIES, INC. DID NOT COME FROM j-ps FILES AND CANNuT BE AUTHENTICATED BY PPG INDUSTRIES, INC. 5178 . APPENDIX A 1. Letter from W.R. Blair/ Regional Director, U. S. Department of Labor; Dallas, Texas, to'J. H. Bierer, President, Pitts burgh-Coming. 2. Letter from B. M. Stout, Vice-President, Pi-tsburgh-Comipg to W. R. Blair. 3. Letters from M. Com to W. R. Blair. and CWNOT be authenticated. J,,_002J783 7 5 517S April 8, 1969 ' * / 22 u.s. DEpARTMzrrr c? labor gf SS3UQ* . Office f Qccupati aal Safety Room 601, 411 H. AkarJ Street - Dallas, Texas 75201 I<r. Jccss n. Bicror, President Pittsiars Coming Corporation1 Cstcaay Pittatarg, Pennsylvania , ?---- Mr. Bicrer: N&-- NOT GGffi' . A recent survey of your establishment revealed that certain eonditi ns * did not meet the Safety and Health Requirements of the Valsh-Healey Public Contracts Act. The Act stipulates that "No part of such contract vill be performed nor vill any of the materials, supplies, articles or equipment to be manufactured or furnished under said contract, be manufactured or fabricated in any plants, buildings or surroundings or under v rking conditions, which are unsanitary or haeardous or dangerous to the health and safety of the employees engaged in the performance of the contract.? &:closed is a notice listing `those unsatisfactory conditions fouid, and you should take corrective action immediately. You are requested to notify ms on or before the compliance date on the notice concerning action taken to correct the unsatisfactory conditions. . Sincerely yours, __ * . -L ' * . t /S .* v* : 'V .' Vendell R. Blair Regional Director Enclosure ccs -Mr. Charles Ten Horae, Vks* Hscagor, ^Danhocs, Tones 4*'i I *t * ' .f THIS DOCUMENT WAS NQT A* "RECORD ''OF PPG INDUSTRIES, INC. DID/N0R COME FROM IT'S FILES AND CANNOT B&ttUTHENTICAVED BY PPG INDUSTRIES, INCT. . , ,V V ;5180- 4 U.S. DE?A2TA1ENT OF LAS02 j -.* euasau of labor staxoaros . \V *** ., . .t.V- - -< - CTHtS DOCUMENT WAS NOT-A.RECORD OF . PPG INDUSTRIES, INC. D'lD NOT COME FROM. IT'S FILES AND CANNOT BE AUTHENTICATED BV PPG INDUSTRIES* INC- * " -NOTE: m. ` .. * , -V. r, .; ' not cfeTE; :r;}. KOT1C2 OF v. jV.r-L i -- SAFETY AND HEALTH VIOLATIONS namc of firm Pittsourg Corsing Corporation STREET ASBRSSS CITY Sox 3057 - Tyler, Texas . Oventova OFFICIAL* COHTaCTSO * NAME AMO TITLE Charles 2. Van Home, Vies, Manager ' CONTRACTOR NUmSS .. COUNTY Smith CTAT1 # Texas ZIP 75701. ! PLANT SURVEY MADE WITH Mr. Van Horse COM SAT REPORT FURNISHES TO James H. Biersr, 'President USSL SAFETY ENGINEER M. Padilla, Industrial Hygienist y Oh <M A SURVEY Of YOUR FACILITIES HAS REVEALED CONDITIONS WHICH DO HOT COMPLY WITH U5DL SAFETY AND HEALTH REQUIREMENTS UHOER THE FUL1C LAV CHECKED. THE CONDITIONS ARE LISTED BELOW WITH REFERENCE TO COOES ANOSTANOAROS WREHQICUHIRHEMAEVNETSB. EEN A OO P T E O AS THE D EP ARTM EN T* 5 SAFETY ANO HEALTH THESE UNSATISFACTORY CONOiTiQNS MUST BE CORRECTED *PLEASE A0V13S REGIONAL DIRECTOR Vendell R. 31eir on or o^rHaT 8, 1969. AS TO THE CORRECTIVE ACTION TAKEN. PUOLIC LAW 7A*MS WALSR'MEALEY PUBLIC CONTRACTS ACT PUBLIC LAW M-H MCNAMARA-O'HARA SERVICE CONTRACTS ACT public law -ns-sew ARTS ANQ HUMANITIES Aer PUBLIC LAVH^Ul VOCATIONAL rehabilitation act 50-204.264 50-204.275, Ind. Vent, ACG3H 5-93 CORRECTIONS REQUIRED UNSATISFACTORY CONDITIONS NOTED OK INDUSTRIAL H75ISNS SURVZY 0? 2, Process Area No certified first aiders- . ** x: * Recommend that several employees he treined so that each shil have qualified personnel to take care of emargencies- wh^t Loeal exhaust ventilation not according to standards. --* Ex: Local exhaust ventilation system vas tested vith the follovix findings! | * a- Grinder hood, 25-50 fpm at face* b. Feeder at material point of entry, 50 fca.. e. Scrap feeder at material point of entry,' 50 fpa.,,- d. Saving ducts 500 pm_at .face--, ' 7* Recommend. that employer sake a study of present local exhaust vent vith professional advice, to cone 'up to standard. It is believed present system is helov the required' capacity. " r' - S T9 Pa. So-J-Cit. J17S!, . //*. A/J /J /TjCt /;// : /!P'P6 </>' A/47" JAf S/A* *&'*' ,/ j; ., Oa/Z^/^^oyjS^. oss- , /*/ ./)jLA J>e/7T. AZSAS----------- ------------------------- i y PuB~i .(?oasTs)C7~3 . /}C7~ (S*CP~**/ /J O* Sc > SVC-T/CsS-\S&JLOC/7~/3 0p.-&97l`3*. -.*--44? '5151 | BB 0023785 | , MIK 4V 24 PITTSBURGH CORKING CORPORATION C . THIS DOCUMENT WAS NOT A RECORD. OF PPG INDUSTRIES, INC. DID NOT* COM'E-FROM . IT-S FILES AND .CANNOT BE AUTHENTICATED gY PPG INDUSTRIES, INC. - v ' * NOT (lijfoh ri-GFvP vi ( : v, - April II, 1950. - ..i . . . . - **. ../ **. la-. tfeudcll a. Blair, Kesicsel Director. C. C. Capartaast of lcbcr ... ; .* V Bureau of Lebor Ctaadsrds Office of Occupational Safety . . , ** * 521 ' r. ; 411 ibrrth ALard Street . **'.. Dallas, Taras 75201 * , Subject: Letter of '4/0/59 to Sir. * * J. E. . * .> :***,' ** j - *. .;* *V * p * . * V %* * * ,- * . s - Bicrcr, President, . / *v* Pittsbursh Corsica Corporation. ' Ess Survey Pleat - Tyler, Teres - 2/13/69 '* *:'.*vp f * V Dear 2r. Slair: ; ,* , *"'*.*' ml .v .///?'. ' * *** **>' * . .:*/* '* Tba follouias action is tolas tabes to correct the'uasacisfactory ccaditieas acted ia the report dated February' 13, 1969.-^.y* V-'c i. .. , ... - - . / i'*' `" ", *** 1.* Code Steward - Scf; 50-204.254.-' * T .. . T'- .4 r' * *- -.-*' . , . ^ * `V . 'V All supervisory csployecs vrre carolled is a first aid course /. * ' gives by the Americas bed Crc33 -with the first seeslea sivaa - 4-10-59. The coarse is to consist of three cessions cad fcy ; -'5-25-59 there will.he fully qualified personnel' ca all shifts. .V :r* .-u'.* * * . 2. ' Code Standard - Ttaf50-204.275;'- /.V-` v' '* "<*. -/. .'** * '**' - ; _- - ` ii * > -* ; '** ` Ji.ttsbursh_ Cora.iag C. orperet.ica uses 'th* e .se1 rvice_s of fLc ee. B. C* rass - ; H.D., Ktdicsl Bisector, PPG Industries, end his staff, to ecaitc izs productica facilities for cctrslianca vich A.C.G.Z.E. thresho * ` . ' Halts for dust ccaccatrctiers. . (Sec ettachaeats II aad III). ? ^ ; addition, the ladustrial nysieas Peuadetioa conducts periodic du - -saosurcasata to aaccrt--ia the dust cosccatraticas preaeat. (See . ' . . .'* ` cttechaasat I). ' ` .. 1. / .... -. **. .. r. . 'i' . *'*.** * : U. j.; : ***.'*. *- * ' .. `for t^ose areas ia vhich dust coaceatrsticas exceed the threshol . *.* `liaito, it is recited, as ccaditice cf caployseat, that each* *. * ' lut Atwn >.--a t?oa <55^ 3020 tv nt ggg 4" . ;v-:-.w;-;.----v:r; ', ' . n C v m- r U* Uliir .' :: i. ;: ;* y * ^ * ;'. * ' ' .. . : \ ^^C'V.-' "f: * * ** p ? *... : :1* ?*. . ,. * ' m\ - v > /* i .. *\* *m 4 . Yic* .*. . -- * **. ' " \' ,*\*\** :"*>*; \*v* * \ v V" <T,. ^ Cits Standard (continued) . ` Cr. C..'1.-1 \v * . . . ... - V T;. ; In reference tc etc csntsacs.oz your report viere yeu state* a-.-.-- *It is Relieved that the present 'cyctce'ls he lea the retired - csoseicy** the dust'cssaurtcsaits do cot. support this belief `Is: .v*. - yistcfcurchjCornice Corporation retains the cervices of : '* *" * Er* Ksrtoa Cam, s' consultin': essiaser and authority in the field/ - of ;. ecu .coils 1-- < 1 T"--? / * 4 r NOTE; TH/S DOCUmr nn iKVj fu TI ,i'-* r- n ^ f~ ut FROM - - -j PPG>:" j ji C u PROCEDURES USED IN TYLER PLANT CLEAN-UP THIS. DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOV BE AUTHENTICATED BY PPG INDUSTR.ES, INC. J_Bro02385'y 5703 INTER-OFFICE CORRESPONDENCE E. W. Holman Procedures., used in Tyler Plant Clean-up C. E. van Horne During Or. Corn's inspection of the Tyler Plant, he requested. a chronological SEQUENCE OF THE PROCEDURES USED TO CLEAN UP THE TYLER PLANT. He OEPARTEO BEFORE THE LIST COULD BE ORAWN UP, THEREFORE, IT IS REQUESTED THAT THE FOLLOWING BE COHVEYED TO HIM! 1. All machinery was removed from the plant premises 2. The three orying ovens and conveyors were dismantled, cut up and BURIED UNDER 6 TO 3 FEET OF EARTH. 3. Using high pressure water streams, the entire plant was hoseo down from ceiling to floor three times. After each hose down operation, THE PLANT WAS ORIED ANO VISIBLE FIBER WAS VACUUMED UP. 4. After the thiro wash oown, the plant was allowed to dry for two weeks. Ouring this two week period, the entire plant floor slab (approximately 100,000 SQ.FT.) WAS SEALED WITH a RESIN BASE CONCRETE SEALER. 5. Complete vacuuming operations from ceiling to floor was begun ano after THE FIRST VISUAL INSPECTION, THE ENTIRE PLANT WAS VACUUMED A SECOND TIME. The complete clean-up time from START to finish required approximately three MONTHS OF CONSTANT WORK. EIGHT MEN WERE REQUIRED FOR THE FIRST 5 WEEKS; SIX HEN WERE REQUIRED FOR 4 WEEKS ANO FOUR MEN WERE REQUIRED FOR THE REMAINING weeks. Progress was checkeo daily to insure completion of the cleaning prior to On. Corn's arrival at Tyler. CEvH/sad { JU\'U6i?/ r. c. COPP i--.IL0023829 1 5704 PITTSBv'agH CORNING CO RPC ATION / INTER-OFFICE CORRESPONDENCE Lee B. Grant, M.D. PPG Industries - 14 N From w. J. Farkos Date July 6, 1972 Please be advised that our Pittsburgh Corning Corporation - Tyler, Texas Plant has ceased operations and is permanently closed as of June 30, 1972. WJF :bm . NOTE: THIS DOCUMENT DIO NOT COME FROM PPG FILES Bill Farkos k.''T-:v'ed ! i / *, [vlcUity* vL. UlrttCiOR / THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NQi COME ri\OM IT'S FILES. AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. | BB 0023330 | 5705 ^?lstx:>l hysichc AIK pollution MORTON CORN, Ph. D., B. Ch. E. CONSULTING ENGINEER 910 IOWM HILL ROAO PITTSBURGH. PENNSYLVANIA 18228 May 1, 1969 TIL 419 Mr. Wendell R. Blair, Regional Director U. 5. Department of Labor Bureau of Labor Standards Office of Occupational Safety NOTE." In! Room 601 411 North Akard-street NOT 00'VH' Dallas, Texas 75201 v. i V , Subject: Letter of 4/8/69 to Mr. J. H. Bierer, President, Pittsburgh Corning Corporation. Re: Survey Plant - Tyler, Texas ~ 2/13/69 Dear Mr. Blair: I am writing to clarify.the letter from Byrl M. Stout, Vice President of Manufacturing, Pittsburgh Corning Corporati to you dated April 11, 1969. I have been working with Pittsburgh Corning Central Engineering engineers on dust control in their Port Allegheny Pennsylvania Works. The manufacturing operation in this plar is similar to that in the Tyler, Texas Plant. We ar install an entire ventilation system and dust collectors at Port Allegheny. However, it should be noted that I have never visited o: surveyed the Tyler, Texas Plant of this Corporation. I fir: saw the letter from Mr. Stout to you on April 28, 1969. At i time, Mr. Stout suggested that X visit the Tyler Plant and I have scheduled to do so. on May 7, 1969. Xou may rest assurec that all the engineering fekills which have been brought to bt on the Port Allegheny Plant dust control system will be fo; on the Tyler Plant. Sincerely yours. ' * 4*'* cc: .Lee B. Grant, M.D. Byrl Stout Morton Com, Ph.D. i. | BB 0023738*7 THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES. AND CANNOT BE AUTHEW HCATED BY PPG INDUSTRIES, INC. 1 5-94 APPENDIX B DUCT VELOCITY DETERMINATIONS (Primary Data and Calculations) 4*'i N0T A RKRD F ir? m ccS7m!,ES' NC' DID not come fM 0023789 I , 5185 27 Ih'! iw.. .' 3 \4 a^ J*rL> tsf_ , ~ --, PITOT TUBE TRAVERSE Duct 1 (17" Line) In front of 40" feeder. Line #1, feeds from Lines 1, 2, 3 before blower. Point Position (inches from wall) *1 2 3' 4 5 6 78 9. 2.0 1/2. 1 3/8 2 1/2 3 7/8 5 3/4 11 1/4 13 1/8 . 14 1/2 15 3/8 16 1/2 Velocity Pressure (VP)("H20) 0.00 -0.04 0.16 0.32 0.44 0.60 0.58 0.48 0.20 0.08 . Totals Averages. * Q 2769 cfa Vvp 0.000 -0.200 0.400 0.566 0.663 0.774 0.762 0.693 0.447 0.283 4.338 0.439 Air Velocity (ftm) 0 -801 1602 2267 2655 3100 3052 2775 1790 1133 17573 1757 # PITOT TU3E TRAVERSE Duct 2 (5" Line) VP Centerline 0.02 "H^Oj V 566 fpm Q 63 cfm VJJ C THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. 1 BB 0023790 J 51S6 PITOT TUBE TRAVERSE Duct 3 (6" Lise) Point Position (inches from wall) 1 2 3. 4 5 6 7 8 9' 10 1/8 1/2 7/8 1 3/8 2 4 4 5/8 5 1/8 5 1/2 5 7/8 - Velocity. Pressure (VP) ("H20) 1.20 1.-15 1.10 0.80 0.52 0.00. 0.02 0.00 0^00 o.'oo Totals Averages Vvp 1.095 1.072 1.049 0.894 0.721 0.000 0.141 0.000 o.'ooo 0.000 4.974 0.497 Air Velocity (fpm) 4385 4293 4201 3580 2888 0000 565 0000 0000 0000 19913 1991 Point 1 2 3 * Q - 391 cm PITOT TUBE TRAVERSE Duct 4 (4* PiamV Velocity position Pressure Vvp (inches from wall) (VP)(-H20) 1/8 1/2 2 0.2 0.447 0.2 0.447 0.7 0.837 Totals Averages 1.731 0.577 Air Velocity (fpm) 1790 1790 3352 6932 ' 2311 QTM -* 202 cm I BB 0023791 \ THIS DOCUMENT WAS NOT:A -RECORD OF PPG INDUSTRIES, INC. DID NOT .COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. 5187' JV ** c c 29 NOTE T3 2? l NOT COME BiOIvi f.?G J i H f >. ; u._w PITOT TUBE TRAVERSE Duct 5 (12" Diam) 12" Duct/ Line 1+2 main leading to 17" main Point Position (inches from wall) Velocity Pressure (VP)("H20) 1 2 3 4 5 6 7 8 9 10 3/8 1 1 3/4 2 3/4 4 1/8 * 7 7/8 9 1/4 10 1/4 11 11 5/8 0.28 0.34 0.36 0.36 0.38 0.40 0.42 0.44 0.44 0.40 Totals Averages VP 0.529 0.583 0.600 0.600 0.616 0*632 0.648 0.663 0.663 0.632 6.168 0.617 Air Velocity (fom) 2119 2335 2403 2403 2467 2531 2595 . 2655 2655 2531 24695 2470 Q * 1940 cfm - H*. THIS DOCUMENT cqmTfROM fTM AUTHENTICATED i' `.v by PPG INDUSTRIES, INC. 7 BB~Q023792_^ 5188 jf. * ^rr 30 I f\ t r, Iv L -," , i , , - -j, U 0 j V 3 i._ i J i %J 11 j i r j PITOT TUBE TRAVERSE Duct 6 (6" Diam) Point Position (inches from wall) Velocity Pressure (VP)("H2O) 1 2 3 4 5 ` 7 8 9 10 * 1/8 1/2 7/8 1 3/8 2 4 * 5/8 5 1/8 .5 1/2 ' 5 7/8 0.04 0.06 0.08 0.10 0.10 0.06 0.06 0.04 0.02 0.02 ' * Totals Averages yvi 0.200 0.245 0.283 0.316 0.316 0.24$ 0.245 9-200 0.141 0.141 2.333 0.233 Air Velocity (fora) 801 981 1133 1266 1266 981 981 801 565 565 9339 .934 0 183 cfm 4*'i t IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. I BB 0023793 | 5183 31 r Ul,- ) PITOT TUBE TRAVERSE Duct 7 (6" Diam) Point 1 2 3 4 5 6 7 8 9 10 Position (inches from wall) Velocity Pressure (VP)("H20) 1/8 1/2 7/8 1 3/8 2 4 4 5/8 5 1/8 5 1/2 5 7/8 1.12 1.26 1.26 1.28 1.26 1.32 1.34 1.30 1.22 1.08 * Totals Averages Jvp 1.058 1.122 1.122 1.131 1.122 1.149 1.158 1.140 1.105 1.039 11.148 1.115 Air Velocity (font) 4237 4494 4494 4530 4494 4602 4638 4566 ` 4426 4161 44640 4464 Q 877 cfm 4*'i 0 . THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME-FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. iJL0237jrj - 5130 S' 32 NOTE: THIS COCU'^mt ;) NOT COME FROM rFG FILES PITOT TUBE TRAVERSE Duct 8 (11" Diam) Point 1 2 3 4 5 6 7 8 9 10 Position (inches from wall) 1/4 7/8 1 5/8 2 1/2 3 3/4 7 1/4 * 8 1/2 9 3/8 10 1/8 10 3/4 Velocity Pressure (VP)("H20) 0.24 0.28 0.32 0.*34 0.38 0.42 0.42 " 0.40 0.86 0.78 Totals Averages yCvp7 0.490 0.529 0.566 0.583 0.616 0.648 0^648 0.632 0.927 0.883 Air Velocity (fpm) 1962 2119 2267 * 2335 2467 2595 2595 2531 3713 3536 6;523 0.652 26121 2612 Q - 1724 cfm. ~ THIS DOCUMENT WAS NOT A RfeCQRD QF / t PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHEN flCATED BY PPG INDUSTRIES, INC. ;v BB 0023795~7 5131 33 PITOT TUBE TRAVERSE Duct 9 (11" Diam) Point 1 2 3_ 4 5 Position (inches from wall) 1/4 * 4\ CO n t 1 5/8 2 1/2 * 3 3/4 Velocity Pressure (VP) ("H20) 0.36 0.38 0.38 0.38 0.38 Totals Averages /vp 0.600 0.616 0.616 0.616 0.616 Air Velocity (fpin) 2403 2467 2467 2467 2467 3.066 0.613 12271 2454 Assumption; 1/2 duct area is blocked by fiber Q " 810 cfia c THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COWL iIT'S FILES AND CANNOT BE AUTHEN i'IChiED BY PPG INDUSTRIES, INC. 5132 3 34 NOTE: THIS nr".'" NOT COiVic rityivi v*. i"; PITOT TUBE TRAVERSE 17" Duct in Saw Area: Main Duct into Dust Collector Point Position (inches from wall) Velocity Pressure (VP)("K20) 1 1/2 0.44 2 1 3/8 0.46 3 2 1/2- 0.68 4 3 7/8 *, 0.74 5 - 5 3/4 - 0.80 6 ii 1/4 0.82 7 13 1/8 0.70 8 14 1/2 0.66 9 15 5/8 0.72 10 16 1/2 , 0.48 Totals ____________________ m Averages . Q - 5061 cfm Vvp 0.6630.678 0.825 0.860 0.894 0.906 0.837 0.812 0.849 0.693 8.017 0.802 Air Velocity (fpra) 2655 2715 * 3304 3444 3580 3629 3352 3252 3400 2775 32108 3211 * * THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG. INDUSTRIES, INC. |-BB 0023797~ | 5193 NOTE: THIS DOCUMENT 010 MOT POMP FROM PPft HI FS PITOT TUBE TRAVERSE 10" Duct into Block Dust Collector Point 1 2 3 '4 5 6 7 8 9 10 Position finches from wall) 1/4 7/8 1 1/2 2 1/4 3 3/8 6 S/8 7 3/4 8 1/2 9 1/8 9 3/4 . Velocity Pressure (VP) CH20) 1.66 1.66 1.50 1*40 1.26 0.74 0.70 0.70 0.82 0.84 Totals Averages -/vp~ 1.288 1.288 1.225 1.183 1.122 0.860 0.837 0.837 0.906 0.917 Air Velocity (fpm) 5158 5158 4906 4738 4494 3444 3352 3352 3629 3673 10.463 1.046 41904 . 4190 Q - 2285 cfm * **'i : DOCUMENT WAS NOT A RECORD OF INDUSTRIES INC. DID NOT COME FROM FILES AND CANNOT BE AUTHENTICATED ,on iMnliqTRIFR. INC. 00 2379 3 [ 5134 NOTE: TW> ^ ' not come from rru FiLE APPENDIX C PHOTOGRAPHS OF SELECTED PLANT OPERATIONS. tti I i *t THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. ** 5195 BB 0023799^ <' ^*,,v ,j*J i2t^v?*Sgg^ .HT-S. *: r*. fc^>***jlgg B*'?,V3 **-- .# """ -. ettod NOTE: THIS DOOUraCT n:^ ---------------MnrfinMPdyniVi ppn ;t;i cc- C 5*R m* ECSSsaygy, B-TV/**-".i2S '=refc!fp syr^r5s^ <*\ THIS. DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. 5138 ij^0023800~7 C Close up of scrap feed and bag collector (Line 2) note axial, ferns directed at carts and 'feeder hoods. NOT .COM tm I vi j * -e Scrap cutter hood and dust collector this document was not a RECORD^F pro INDUSTRIES, INC. DID NOT COM ' IT'S FILES AND CAN1' 0 S-. - 1 BY PPG A1 E' ' r.,W * * siav S_B_ 00 23 HoT~7 ( ' '<S> <50 SS3 !JWJj Dust collector for scrap hood & feeders (Line 1-3), showing set hood entry closest to blower ir NOTE: THIS DO":;VETTED NOT COME FROM PPG FILES THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DIO NOTPCOME FROM IT'S FILES. AND CANNOT BE AUTHENTICATED BY PPG- INDUSTRIES, INC. Builder on Line No. 2 5138 7~BB~0023802"7 6i Large cutting saw showing hoo ? > i HU 5 i : E- , 7>, i' \ - .rvu HL3'j ` ,WL-- - 3 ^ ; ' J * - 4**i THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DID NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED ' BY PPG INDUSTRIES, INC. Cutting" area dust collector two saws with attach d hood | BB 0023803 | 5133 LL T 3 I* i * Cutting saw, dust collectoi and blower (close up) i-. . i. i 'I t \J * ! ' ' ; THIS- DOCUMENT WAS NOT A RECORD OF. PPG INDUSTRIES, INC. DID NOT COME FROM . , IT'S FILES AND CANNOT BE AUTHENTICATED rV PPG INDUSTRIES, INC. | BB 0023804 J . 5200 f