Document 2qn1EMm3a0K0w1e6yo3NXxM0b

& Diamond Shamrock Interoffice Correspondence To: From: Date: Lewis Payne Ted Guth November 2, 1 981 Subject: Respiratory Protection - 3M Vinyl Masks D 118-0 Since the adoption of the VCM standard in 197**, industry has needed a light-weight, portable mask to provide workers with the mobility nec essary in their operation. As you also know, OSHA included in the standard that all canister masks must be provided with an end-of-service1 *fe indicator in order to be acceptable. By making this announcement in the VCM standard, OSHA has narrowed down the selection of available masks to one. The mask I am referring to is the mask supplied by the 3M Com pany, which has been approved by NIOSH with certain limitations. There is presently no other mask available, except bottled-air or other air supplied systems. The 3M mask, which is in general use in our plant in areas slightly above the act ion-level, has presented many safety related problems to our workers, particularly in hot weather. We have found, in some instances, where workers have become extremely hyper-ventilated and dizzy from just ascending a flight of stairs. Many workers also complain of impaired vision. On October 28, 1981, a representative for 3M was invited to our plant to discuss the 3M mask and to provide some additional training that he' thought might be helpful to alleviate our problem. 1 want to say now that training is not our problem. We have a very good training program and an elaborate testing facility here at Diamond Shamrock, and our employees are retested annua 1ly. While the 3M representative was here, 1 asked him if there was not someway that an exhalation valve could be installed on the VCM mask since I knew that they had other masks on the market with this feature. The 3M repre sentative said that they had several masks with both an exhalation valve and an end-of-service-Iife indicator but they were not acceptable for VCM service. I then asked the 3M representative to send us a couple of these masks so that we could test them on our employees to see if we could eliminate the hyper-ventilation and dizziness. Once we received the masks, we tested them on four different employees under stress conditions, climbing stairs, riding bicycles, excessive walking. All employees reported a great im provement in the masks fitted with an exhalation valve over the regular VCM mask. OCC 11047 Respiratory Protection November 2, 1^81 Page Two Since I believe that 3M is very close to perfecting a mask that has both an end-of-service-1ife indicator and an exhalation valve acceptable for VCM service, I would like to see some of our people in the Environmental Service area lend their support through NIOSH to help 3M build a better mask for the VCM industry. TG/sjo cc: D. Frey M. Pulley Bob Adams - GCA Paul Rogerson - 3M Company Ted Guth OCC 11048 OCC 11049 4 Diamond Shamrock Interoffice Correspondence Ted Guth - Deer Park Plastics Janet Irvin - 1C Environmental Services June 30, 1981 Subject: Dust Survey of Paste Bagging Area D 118-D General From April 28, 1981, intermittently to June 22, 1981, samples were taken for the purpose of measuring PVC dust levels at the Paste Bagging Area. Samples were collected both in the general area of the process and by personnel monitoring, using DuPont P-2500 Constant Flow Pumps, equipped with both a gravity-cyclone separator and a three-stage cassette, in order to measure both total and respirable dust quantities. Presently considered to be inert, PVC dust is classified only as a nuisance dust, having no long-damaging properties. The current QSHA Standard for Nuisance Dusts allows a maximum exposure of 5 mg/nr respirable and 15 mg/nw total. NIOSH and ACGIH, however, recommend the total dust exposure not to exceed..10 mg/m , as referenced in the 1980 TLV Handbook, and that is the standard we like to try to stay within. It should be kept in mind, however, that more extensive study is currently underway on PVC dust, and it'S'Very possible that more stringent control regulations may be enforced in the very near future. Results In most instances, area readings were found to be significantly higher than the personnel exposures. This is probably due to the use of fans located in various positions around the workers, which tend to cause the dust to collect on the sampler, sometimes covering it completely. Likewise, personnel readings also seemed to be influenced by the positioning of the fans around the workers. Results of the monitoring are listed in the attached table. Recommendations Since the dust levels are normally above the standard, it is important that the operators continue to wear respiratory protection while performing this parti cular task. I would like to suggest, however, switching from the paper mask, which is currently in use, to the 3M-9920 paper dust mask with exhalation valve. This mask is much:cooler and easier to breathe through, and therefore is much more readily accepted by the employees. You will find information regarding it included with this report. Another possible alternative to the dust mask is OCC 11050 Dust burvey or baste bagging area Page 2 UUIIC JU, | JO l Recommendations (Cont'd.) the Racal Air-Stream helmet. It protects the employee by providing a con stant stream of fresh air across the face of the worker. They are a bit expensive as an initial investment, but well worth it in protection, comfort, and as a morale booster. Information regarding the helmets will also be included with the report. It must be kept in mind that providing protective equipment constitutes only an interim measure until engineering controls can be implemented which will alleviate the problem. Although a general cleaning of the area is con ducted after each shift, a lot of residual dust still remains in the area. This dust is being continually stirred up and circulated by movement of the forklift and the fans. An efficient dust collection system should reduce the amount of dust in the air, while a thorough clean-up of the area should reduce the additional burden caused by the forklift and the fans. Conclusion I hope you will find this survey sufficient to answer your questions regarding dust levels at Paste Bagging. Please be certain to notify the employees con cerned of their results. Let me know if you should need more information or assistance. Jl/bh Attachment Industrial Hygienist Occ 11051 4Jt;6.P.PJL. Diamond Shamrock Interoffice Correspondence To: From: Date: Blackie Lochridge - Deer Park Plastics Compounding Jan Mays - IC&P Environmental Services March 25, 1981 ______ _______________________ Subject: Dust Survey of Compound Area D 118-C On March 12, 16 and 17, 1981, samples were taken for the purpose of measuring dust levels at the No. 5 Warehouse, No. 6 Compound Area. The procedure which was requested to be sampled was the masterbatching process. Although this process varies in total time of action, it usually does not last for more than two hours. Samples were collected both in the general area of the process and by personnel monitoring. DuPont P-2500 constant flow pumps equipped with both a gravitycyclone and a three-stage cassette were used^in order to measure both total and respirable dust quantities. In all cases, personnel readings were found to be significantly higher than the area samples (area samples were taken near the bag scale). PVC dust is presently considered to be inert, and therefore constitutes only a nuisance dust, having no lung-damaging properties. More extensive studies are currently underway, however, and it's very possible that more stringent control regulations may be enforced fn the near future. The current OSHA Standard for Nuisance Dusts allows for a maximum 5 mg/m3 respirable exposure and a 15 mg/m3 total. NIOSH and ACGIH, however, recommend a total dust exposure not to exceed 10 mg/m3, as referenced in the 1980 TLV Handbook, and that is the standard we like to try to stay within. The proceeding .table shows the dust levels found during the sampling period. Recommendations Since the dust levels are above the standard, it is important that the operators performing this particular task wear respiratory protection. We recommend the 3M 9920 paper dust mask with ^exhalation valve.,. ...This._ma.sk is much cooler and easier to breathe through, and therefore is much more readily accepted by the employees. You will find information regarding it in the back of this report. It should be remembered, however, that providing protective equipment con stitutes only an interim measure until engineering controls can be implemented which will alleviate the problem. A more efficient dust collection system in the area would likely correct the problem. I hope you will find this survey sufficient to answer your questions regarding dust levels at the Compound Area. I have enclosed your copy of the COHESS form containing these analyses for your record. Please be certain to notify OCC 11052 Dust Survey of Comoound Area Page 2 March 25, 1981 v: the employees concerned of their results. Let me know if you should need more information or assistance. JM/bh Attachments Industrial Hygienist OCC 11053 Wnai is the 9920? . - The 3M Brand #9920 Dust, Fume, and Mist respirator is a . . v '/' NIOSH/MSHA approved half-mask respirator made from non- ' /. '/ ; V; ' - woven fibers designed for worker comfort and protection. What NIOSH/MSHA ^ * The #9920 Dust, Fume and Mist Respirator was. approved under . approvals did the Subpan K Of SOJP^F n #?M?n . . resp^ory proton ^amsu ^^ 1978) for \ . , ^ * 4: , - -/v:*..; ' Dusts* including but hot limited to aluminum, flour, iron ore, V : free siKca,cqal,cadinium, chromium, lead andmanganese. ` VT * * * . . . .f' 1 * . . !. : b) -Fumes of various metals'including but notlimited to alumi- " . wmt antimony, cadmium, chromium, copper, iron, lead, .. ` ' magnesium, manganese andzincs, . '' ". c) Mists produced by spray coating with vitreous enamels, - chromic add mist produced during chromium plating, and : other mists of materials whose liquid vehicle does not produce .harmful gases orvapors.- . ., \ , - ,3) Radon daughters and radon daughters attached to dusts, fumes and mists. e) Asbestos containing dusts and mtsts. OCC 11054 }s ihe S920 class-mad as a HEPA filler? M TrtoA rPrers to a high efficiency particulate filter. The HBPA mw must be at least 99.7V'* against 0.3 pm DOP par- Mats The 89920 was tested against 0.4 to 0.5 sd.ee part. Ses and against lead oxide fume particulates. In these tests, the 9920 is at least 99-9 + % efficient.- -J Does ihe 9920 offer protection against gases and vapors? No The 9920 offers protection against particulate materials only. " the 9920 for protection against gases orvapors assort- ated with spray paint. | How long can the 9920 *. ba used?:; The 9920.is.d.e.signejd_efro--,r. .u.s.e-aduunfnin^s, 3^> normal work period- Xt ca-n. j be used for longer periods provided that. . 2-, - a) breathing is not difficult, and - - b) the respirator is not physically damaged. ' V. - j h fha 9920 be used for protection against welding fumes? - ; . ; * ' ' T1 oa20 is approved for respiratory protection against . Yes. The 9920 5 ,din*'operations for fumes of metals metal fumes 1 Avith a threshold tom.value ^ ^ricaa Confer. concentration greater tb^O. H^fats recommends a TLV- . ence of Governmental / 3^f nC) toxic dements are pres- TWA for welding fumes of 5 mg/m n no wm . , ent in thewelding rod. ' ' ; - - /"* * -' - - ' `- \ ; ` . TV : In welding operations, will the 9920 protect against the nitrogenoxides, carbon monoxide and ozone that may be generated? No. The 9920 offers no prote^ionag^i^^^^andva^s.I^^-- . ever, these gases are not normauy *< require respiratory protection. . . ' ...... ... Is there an OSHA standard or MIOSH - recommendation on welding? * - -p-Tc *nnsid"rs,d separately. The Following is a No. Each contaminate is uons^- P : d wUh weW_ table of metal fumes and gai.es that may o- ing operations. OCC 11055 Maximum Gxaosurs Levels ai Welding Furnas and Gasas Material Fumw Alondum fAJ,0->) Arsenic (As) Beryllium (B) Cadmium Oxide (CdJ Chromium (Cr) Cobalt (Co) Copper Fume (Cu) Fluoride (F) Iron Oxide (Fe,Q,l Le<ad> Inorganic (Pts) Magnesium Oxide (MgO) Manganese (Mn) . Molybdenum (Mo) Nickel (Ni) Tin Oxide (SnO,) Vanadium (V) Zinc Oxide (ZnO) Welding fumes Gases Carbon Dioxide (CO,} Carbon Monoxide (CO) Hydrogen Fluoride (HF) Nitrogen Dioxide JNO, ) Nitrogen Monoxide (NO) Ozone (O,) Phosgene (CGCI,) UmitValu**3 Tims-Wv**ght^d (TWA), mg/m* in 8 howrj ACGIH^ 10 0.5 , OSHA -- 0.5 NIOSH -- -- Short-term xpc&u*e tsisreo, jmg/m3 in IS m )>, ACGIH5* 2Q 03 OSHA - NIOSH -- 0.002 0.002 0.05 0.002 0.1 -- 0.04 0.023 0.15 0-005 03 0.005 (130 min) 03 .Vs - 0.1v ' 03 2.5 S 0.15 10 5 5 10f . 1 1.0C 0.1 0.1 2.5 10 0.2 15 _e 5 )5f 1. 0.001c 0.025d sp. .-- 2.5 -- <a.Q5 --. .-- 0.015 . vl~ ' -- -- 10 0.45 -- -- 10* 20f --. - 1 --* .'- 5 0.03= . '-- -- -- -- -- -- --. -- 10 10 0.05 5 5 be S / e- --. -- -- 5 -- 20 20 --S 10 --- -- -- 0.1 ` -- -- --. 0.05 15 -- Possible Hreltb Hassrd V'lhxnTLV I, Exceed*) Nuisance {test Lung & lymphatic oncer, respiratory irritant Lung cancer, pneumonitis Lung aod kidney effaces, pulmonary edema}* Lung cancer, skin ulcers, nasa?perforation ; Chemical pneumonitis Irritant, fam* f$v< Kidney and bone effects Nuisance dust Systemic poisoning Fume few Narvoussystem disorders Respiratory irritant Lung and nasal cancer,' skin effect, *. * Nuis4r>o dutt Nuisance dust Eye, skin, and lung effects Fume few Depends on cons(intent. 5.000 50 . - 3 5 0.1 0.1 5,000. 10,000 50 35 ,3 2.59 5 25 25 0.1 . 0.1 0.1 15,000 400 --` 03 ' ~ , --* -- -- --' 30.000 (10 min) 200 59 1 -- -- 03 Respiratory effect. Asphyxiant Skin, eye tnumion, - bone effect, ' Airway effect, . Blood effects Pulmonary tdsffla Airway effect. a. Threshold limit ratu forth* mwu^e<weotj and cortipou *,9>. ' r,w.m>hs<i b. y their chemical symbols, am land in mg/m> (milligram, par cubic metre) For particulate form, and m ppm (part, par m. b. ACGIH-American Conference of Governmental Industrial Hygienists.- - ... . * c. Carcinogenic chromium. d. Noneareincrgenre chromium, - ; e. Soluble molybdenum,. f. insoluble molybdenum. 9- Reported as mgJm3, milligrams of Fluorine per cubic metre. '.J- . " * ; Source: NIOSH Research Report "Assessment of Selec_te_di rC-^o,,ntmrollliedd Technolo=g5y* Techniques for Welding Pomes'*; Report No. NIOSH 79-125. .' OCC 11056 occ 11057 & * Diamond Shamrock Interoffice Correspondence To: From: Date: Barry Sherman - Deer Park Plastics Bob Adams - IC&P Environmental Services October 31 , 1980 ____ ___________ Subject: Breathing Air Quality at Plastics Plant cUo 0 't - 5 At Lloyd Davison's request, the breathing air system at PVC was sampled to compare with the Compressed Gas Association "Grade D" standards. This infor mation was desired for comparison purposes after proposed system changes and improvements are implemented. On October 20, a sample of breathing air was obtained by Jan Mays, Industrial Hygienist. Since the dew point is checked each shift by the operators, this test was omitted. The results of analysis by the Environmental Services laboratory were as follows: Characteristic Analysis Grade 11D" Spec. Vol. % Oxygen Water Condensed Hydrocarbons mg/m3 Carbon Monoxide, ppm Odor Carbon Dioxide 20.4 None Detected <8 None 436 19.5 - 23.5 5 Max. 20 Max. 1,000 Max. Gaseous Hydrocarbons, as Methane, ppm (vol.) 10.3 * * Not required for Grade D air; the higher grade "F" air has a spec, of 25 ppm max. Therefore, it was found that the breathing air at PVC meets all Grade "D" specifications. If you have any questions or comments on this subject, please let me know. BA/bh. Attachment Bob Adams OCC 11058 X I .Association nc Air Specification GAM Page 3 AIK SPECIFICATION 1. SCOPE 1.1 This document describes the specification requirements for air, including1 atmospheric air and air synthesized by blending oxygen and nitrogen in the proper proportions. It is different from other gas specifications because atmospheric air is not a manufactured product but is naturally occuring. Atmospheric air contains a large variety of trace constituents on many of which it is impractical to set individual limits. However, this specification qualifies certain grades of air by limiting the concentrations of specific trace constituents. 2. CLASSIFICATION 2.1 Types -- Gaseous air is denoted as Type I and liquid air as Type II. 2.2 Grades -- Table 1 presents the component maxima, in ppm (v/v) unless shown otherwise, for the types and grades of air. A blank indicates no maximum limiting characteristic. TABLE I TYPE I TYPE II (LIQUID) Limiting GRADES Characteristics A B c D E FGH J AB % CL (v/v) Balance Pre dominantly Nj (Note 1) Water atm. atm. itni/ atm/ atm/ atm. atm / atm/ atm/ atm/ atm. I9.5-2J,5 19.5-23.5 19.5-23.5 19.5-23.5 19.5-234 19.5-23.5 19.5-23.5 19.5-23.5 19.5-23.5 none cond ensed (per 5.3.1) note 2 note 2 note 2 note 2 note 2 note 2 l -10.4* F note 2 Hydrocarbons (condensed) in Mg/m* of gas at NTP (Note 3) none 1- (per 5 5 5 5.4.1) V Carbon Monoxide Odor Carbon Dioxide 50 20 10 5 5 5 .1 "" see see see see 5.1.5 5.1.5 5.1.5 5.1.5 see see see 5.1.5 5.1.5 5.1.5 1000 500 500 500 500 0.5 5 none 5 Gaseous Hydrocarbons (as methane) Nitrogen Dioxide Nitrous Oxide Sulfur Dioxide Halogenated Solvents Acetylene ' y.-;- T'.V ` '*v 25 15 10 'l . . ..a. ' T'z ' ------- \ .`-ItlVVv 'hr - . 4. t 2.5 ;."'-y'*;~ - -V - 2.5 . 1*. 10 0.5 , -V 0.5 1 0.5 0.1 0.1 0.1 0.1 0.05 10 0.5 0.5 1 0.5 Permanent Particulates V: - 1 --.15 Note 1: The term "atm" (atmospheric) denotes the oxygen content normally present in atmospheric air; the numerical -values de note the oxygen limits for synthesised air. Mote 2: The water content of compressed air re quired for any particular grade may vary with the intended use from saturated to very dry. If a specific water limit is re quired, it should be specified as a limiting dewpoint or concentration in ppm (v/v). Dewpoint is expressed m temperature *F at one atmosphere absolute pressure (760 mmHg). To convert dewpoint "F to C. ppm (v/v), or mg/liter, see 7.1. Note 3: No limits are given for condensed hydro carbons beyond grade E since the gaseous hydrocarbon' limits could not be met if condensed hydrocarbons were present. OCC 11059 Air Specification G-7.1_____ Page 4 % Compressed Gas Associatio 2.3 Quality Tests -- The supplier will assure, by his standard practice, the quality of the speci fied type and grade of air. If otherwise required, alternative control procedures are described in 2.3.1 -- analytical procedures; 3.2.1 -- lot defini tions;-3.2.2 -- samples per lot; and 4.2, 4.3 and 4.4 -- samples. Other control procedures not listed in this specification are acceptable if agreed upon between the supplier and customer. 2.3.1 Analytical Procedures -- Table 2 is a directory of the analytical procedures shown in 5 which are applicable for the specific types and grades. TABLE 2 TYPE i (Caseous) TYPE 11 (Liquid) Limiting CltADES Characteristics A B CDE FGHJ A B Percent Oxygen. 5.2.1 JLL2.___________________ 5.2-3____________ 5.2.4 5.2.5 5.2.6 444 444 444 *44 *44 4 * 4 4* 4 a * 4 44 a 4 4* 4 444aa 4 44 44 a4 44 44a4 Water 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 * 444 444 4 ------- 4 4 4 4 44 4* 4 4 44 4 4 *4 4 44 4 4 4 4 Condensed Hvdrocarbons 5.4.1 5.4.2 5.4.3 44 4 444 Carbon Monoxide 5.5.1 5.5 2 5.5.3 5.5.4 444 4 *4 444 444 444 444 4 4 44 44 44 4 4 4 4 Odor 5.6 5.6.1 444 4 4 44 4 Carbon 5.7.1 5.7.2 5.7.3 5.7.4 Gaseous 5.8.1 5 ft. 2 5.8.3 5.8.4 Nitrogen 5.9.1 5.9.2 5.9.3 Nitrous Oxide 5.10.1 Sulfur 44 44 44 44 444 444 44 44 4 4 4 44 44 4 4 44 4 4 44 *4 44 4 44 4 44 4 44 4 4 4 * 4 4 * 4 4 4 5.11.1 5.11.2 5.11.3 5.11.4 Halogenated 5.12.1 5.12.2 5.12.3 Acetylene s.m 5 132 5.13.3 Permanent 5.15,1 * 44 4 44 4 44 4 44 4 44 4 44 4 44 4 *4 4 4 4 4 4 4 4 4 4 4 4 4 OCC 11060