Document pe7gGwgvkzvqZN1gJZqEYpgd

n THE DOW CHEMICAL COMPANY TEXAS OPERATIONS ASBESTOS HANDBOOK ASBESTOS CANCER ANO LUNG DISEASE HAZARD AUTHORIZED PERSONNEL ONLY RESPIRATORS AND PROTECTIVE CLOTHING ARE REQUIRED IN THIS AREA cn --i CD CD cn -c ro REVISED, FEBRUARY, 1987 S T 0 0 5 1(773 THIS MANUAL IS AN UPDATED EDITION OF THE HANDBOOK PREPARED IN 1972 AND REVISED IN 1977 AND IN 1985. THIS EDITION WAS REVISED BY THE. ASBESTOS TASK FORCE DURING THE FOURTH QUARTER OF 1986. ASBESTOS TASK FORCE MEMBERS RED AHLICH DARRYL CRAGAR DONNA HICKS GERRY HINOJOSA BUDDY JACKS WAIT NQACK DICK SYMM BILL TOMLINSON MIKE TOWN GEORGE WILLIAMS DARRELL WQRMAN RANDEL SNELGROVE =Quality= Performance Means More At Dow. U U iC O O iS INDEX SECTION____________________________ TITLE________________________________ PAGE I II III IV V VI VII VIII IX X XI XII APPENDIX A PURPOSE 1 HEALTH EFFECTS 2 TRAINING PROGRAM MINIMUM REQUIREMENTS 3 DEFINITIONS 4 ASBESTOS AWARENESS 7 ASBESTOS MAINTENANCE PROGRAM 13 NOrUTCATICN OF DEMOLITION OR RENOVATION WORK 19 HAZARD COMMUNICATION 20 PACKAGING FOR DISPOSAL 22 MINIMUM REQUIREMENTS GASKET & PACKING HANDLING 23 GLOVE BAGS 24 SMALL-SCALE SHORT-DURATION PROJECTS WITHOUT GLOVE BAGS 25 MINI-ENCLOSURES 27 LARGE SCALE, LONG DURATION FRQJECTS 28 TYPICAL DECONTAMINATION AREA 30 NEGATIVE PRESSURE ENCLOSURES 33 AUTOMOTIVE CLUTCH & BRAKE REPAIR 34 ASBESTOS SAFETY CHECKLIST 36 ASBESTOS ABATEMENT AUDIT CHECKLIST 37 APPROVED EQUIPMENT 39 -i- SECTION I roRPQSE This handbook defines safe handling procedures for asbestos materials used in Texas Operations. Hie intent is to control personnel exposure to asbestos dust through training, asbestos maintenance programs, safe work procedures, proper use of protective equipment, and by the substitution of non-asbestos containing materials. Asbestos has been widely used as insulation, structural wallboard, roofing material, etc. Asbestos fibers are currently in use as a mechanical reinforcing matrix in insulation, roofing paper, certain piping systems, gaskets, brake linings, clutch plates, etc. Dow Engineering Specifications were revised in 1970 to exclude asbestoscontaining insulation before the enactment of Federal regulations controlling the use and handling of asbestos. It is Dew's philosophy to eliminate the use of asbestos where feasible. The revised QSHR standards (1910.1001 and 1926.58) which became effective July 21, 1986 define the precautions, procedures and controls required for asbestos handling. These standards also define the allowable exposure levels and the manner of determining exposure levels. The National Emission Standard for Hazardous Air Pollutants (NESHAP) also established specific requirements for removal and disposal of asbestos-containing materials. Violations of these regulations may result in a citation or fine or both. Dow is committed to meeting or exceeding government regulations, to protect the health of personnel. $ T0 0 o t>7 75 SECTION II HEALTH & ENVIRONMENTAL SCONCES INPQEMATICN CENTER POTENTIAL HEAUH EFFECTS ASBESTOS CR-0027-0713 REVISED: 12/11/86 SYNONYMS AMFKIBOLE PAGE 1 01/07/87 APPEARANCE: fibrous solid in various colors EXPOSURE GUIDELINES: OSHA PEL is 0.2 fibers (>5 um) per oc. OSKA General Industry Standard 29CTR1910.1001. OSHA Construction Standard 29CFR1926.58. AOGIH TLV is 0.5 fibers (>5 um) per cc for aroosite, Ala; 0.2 fibers (>5 um) per cc for crocidolite; .2 fibers (>5 um) per cc for chrysotile and other forms of asbestos, Ala. ___________ ________POTENTIAL HEALTH EFFECTS This section includes possible adverse effects which could occur if this material is not handled in the reccramended manner. These effects apply to stated material and may not apply to dilutions or formulations of ttat material. LU iSOOiS EYE - Mechanical injury only. SKEN - Mechanical injury only. - Skin absorption is unlikely due to physical properties. INGESTION - Single dose oral LD50 has not been determined. - Amcunts ingested incidental to industrial handling are not likely to cause injury; however ingestion of larger amounts may cause injury. ACUTE INHALATION EJECTS - Excessive exposure to dust causes chronic inflammations of lung tissue and pleural membranes, as well as cancers, in both man and animals. SUBCHRONIC EFFECTS - Prolonged exposure to asbestos dust has been found to cause pulmonary fibrosis (asbestosis), which may be disabling and even fatal. CHRCNIC ETTECTS/CARCINCX2NICITY - Has been shewn to cause cancer in humans. - For hazard ccnramication purposes under OSHA standard 29 CFR part 1910.1200, this chemical is listed as a carcinogen by NIP and IARC Group I. TERATOGENIC EFFECTS - No relevant information found. REPRODUCTIVE EFFECTS - No relevant information found. MUTAGENICITY - Sane forms of asbestos have been reported to induce chromosomal changes in tissue culture. -2- /.U 'iS O O iS SECTION III ASBESTOS GAINING PROGRAM MINIMUM REQUIREMENTS All employees who handle asbestos must be trained before initial assignment and annually thereafter. The OSHA asbestos standards and all training materials are available to employees upon request. Information will be presented in a manner the employee can understand. The following items must be included in the training program: 1. The health effects associated with asbestos, 2. The relationship between smoking and exposure to asbestos in producing lung cancer, 3. Methods of recognizing asbestos, 4. The quantity, location, manner of use, release, and storage of asbestos and the specific nature of operations which cculd result in exposure to asbestos, 5. The engineering controls and work practices associated with the employee's job assignment, 6. The specific procedures implemented to protect enplqyees from exposure to asbestos, such as appropriate work practices, emergency and clean-up procedures, and personal protective equipment to be used, 7. The purpose, proper use, and limitations of respirators and protective clothing, 8. The purpose and a description of the medical surveillance program required by this standard, 9. A review of the OSHA standard, including appendices. NOTE: A video tape, "Asbestos Standards" (VT87-1130B), is available through the Television Department (phone 2620) which covers all above requirements except 4, 5 & 6. Items 4, 5, & 6 should be addressed locally by line supervision. -3- ST005H778 SECTION IV DEFINITIONS ACTION LEVEL An airborne concentration of asbestos of 0.1 fiber per cubic centimeter (f/cc) of air calculated as an eight (8)-hour time-weighted average. ASBESTOS Chrysotile, anosite, crocidolite, tranolite, arrthophyllite, actinolite, and . any of these minerals that has been chemically treated and/or altered. AI7TH0RIZED PERSONNEL Any person authorized by the employer and required by work duties to be present in regulated areas. CLEAN ROOM An uncontaminated rocin having facilities for the storage of employees' street clothing and unoontaminated materials and equipment. COMPETENT PERSON One who has been trained in an EEA approved course and is capable of identifying existing asbestos^hazards in the workplace and has the authority to take prompt corrective measures to eliminate them. The duties of the oonpetent person include at least the following: establishing the negative-pressure enclosure, ensuring its integrity, and controlling entry to and exit fran the enclosure; supervising any employee exposure monitoring required by the standard; ensuring that all employees working within such an enclosure wear the appropriate personal protective equipment, are trained in the use of appropriate methods of exposure control, and use the hygiene facilities and decontamination procedures specified in the standard; and ensuring that engineering controls in use are in proper operating condition and are functioning properly. DEOCNIAMINATICN AREA An enclosed area consisting of an equipment roan, shower area, and clean roan, which is used for the decontamination of workers, materials, and equipment contaminated with asbestos. The decontamination area may be adjacent and connected to the regulated area or located remotely. -4- Gi/JlGOOiS SECTION IV DEFINITIONS EEMOUnCN The wrecking or taking out of any load-supporting structural member and any related razing, removing, or stripping of asbestos. EMPLOYEE EXPOSURE Qcpcsure to airborne achest-ns that would occur if the employee were not using respiratory protective equipment. EQUIPMENT ROOM (CHANGE ROOM) A contaminated roan located within the decontamination area that is supplied with impermeable bags or containers for the disposed, of contaminated protective clothing and equipment. FIBER A particulate form of asbestos 5 micrometers or longer, with a length-to-diameter ratio of at least 3 to 1. FRIABLE ASBESTCS Any material that when broken, crushed or pulverized releases asbestos fibers. Hlffl-EFTICTENCY PARTICULATE AIR (HEPA) filter A filter capable of trapping and retaining at least 99.97 percent of all monodispersed particles of 0.3 micraneters in diameter or larger. MINI-ENCLOSURE An enclosure constructed of 6-mil polyethylene sheeting to restrict access to the area where small-scale, short duration asbestos maintenance or renovation work is to be performed. The enclosure must have a contiguous change rocm. NEGATIVE FRESSURE ENCLOSURE An enclosure for large-scale long duration projects constructed of 6-mil polyethylene sheeting and equipped with a ventilation system (which discharges through a HEPA filter) capable of creating a negative pressure of 0.02 inches of water inside the enclosure. Where feasible, a decontamination area should be contiguous to the enclosure and should be the only means of egress. PERMISSIBLE EXPOSURE LIMIT (PEL) No employee shall be exposed to an airborne concentration of asbestos in excess of 0.2 fibers per cubic centimeter of air as an eight-hour time-weighted average (8 hr. TWA). -5- ST0GUU700 SECnCN IV DEFTNITTCNS REGULATED AREA An area established by the employer to demarcate areas where airborne concentrations of asbestos exceed or can reasonably be expected to exceed the permissible exposure limit. The regulated area may take the form of a tenporary enclosure, or an area demarcated to restrict arapgg and minimize the number of employees potentially exposed to asbestos, REMOVAL Hie taking out or stripping of asbestos or materials containing asbestos. RENOVATION The modifying of any existing structure, or portion thereof, where exposure to airborne asbestos may result. REPAIR Overhauling, rebuilding, reconstructing, or reconditioning of structures or substrates where asbestos is present. SMALL-SCALE, SHORT-DURATION ACTIVITIES The tasks such as, but not limited to: the removal of asbestos-containing insulation on pipes prior to repair; the removal of small quantities of asbestos-containing insulation on beams or above ceilings; the replacement of an asbestos-containing gasket on a valve; the installation or removal of a small section of drywall material containing asbestos; or the installation of electrical conduits, pipe, or cable through or proximate to asbestos-containing materials. SURFACTANTS Chemicals added to water to improve its wetting ability. -6- ir<--io f uunat Aiuiai] uisur aqniMin anu (uraBUiUTT I----------asbestos carrot > O.IZ OOCTMCR IES01TS in min neons I tsatb nesaon on AS1E3T0S SECTIOH til TOil inner all mis I Tin win 9 lancr baisbxals ao sob ro ajultttcal snnaa tof-iM-iors -------------1--------------------------------, asbestos cerrurr < o.u docoust osolts in errui tscous I 10 mnu actios nqoiirD non inner ro KATULAL CCniTION in fiscal run uuase MATCBLAL n FOCt COHO ITT 01 OB FISCAL |flBEI CELEASE ; KAZTtlAL II coco COHOITTOH, *0 ftn IEELEASE I oocoreyr. uin. in SET or IAIHTEEAICE nan* TQM sectioh n GO CD CD C.T rriLOin in decide fOB UMOFAL iHD/OB UTAH carrier motATioH seifices 409-138-7034 OB MDCSTEIAL ETcma stirias 409-na-i:si fOB assistance. kajob iDflJWCJTSBRCrrrai "much imcbal ms/ob OB EEHOFATIOi IEQ0I1XD IlfAll ligCUZD RiHE MQJICT SmirUOB. seers, job, in (ir uqoiiEo) ruriiz nrincinoH Lrmi TQU SECTIOB Til carrier oniirii SEIFICES *09-238-141* U OATS IBIOBB HOBS TO neia jnoLizn carrier OB SEETTCXS to m job a rot oar ms I aa not dams at stait run Dacron select dob eannr msat ixnn sectioh i raw to so if job FALLS INTO CLOTS SAC OB BULL-SCALE, B80ET0CEAT1CB iCIITTTT, IF SO OS COBEECI isstsra iiATomr lUMH lEQOIinXBTS I DOCMBT EBLiLITJC ASISSia A SET-OP KAIHTSBABCS noeuH BATS FEE-JOB EETTZI WITS SAFCTT DIMCTOB, DOB 4 CCTTIACTOt cotmifi nssoB. uoamiAL STCIEBE, DOB OB COBTEACTOB rSMOOKL TO DO JOB I DECIDE OB JOB nOCEDOlES AND HIATT AOBIT in MOBITOBISC carixn AS1ESTQB SAFCTT aUCCLIST I IF ALL AS1EST0S UXOFCD, raisiSrSTiiiiffia? DOCtHEIT An SET OF EAimtiia FEOCEJH -TEXAS aniAZlOHS SAFCTT STABDAlS <43 -Texas anATiaa Assssra liniooB <TOiB) -SPA-340 niFU AOCE -OBBA STAIIOA1BE 1910.1001 A 1924.38 -TEXAS OFSEATIORS SHmamnrtAL staedaxo SS-J14. -7 ZQi'iSOOIS SECTION V ASBESTOS AWARENESS SUBJECT: ASBESTOS DO'S AND DCN'TS This section is provided as general guidance when working with or near asbestos-containing materials. DO 1. Get positive identification. Sample and have analysis performed at Analytical Services, phone 1075. 2. Take sufficient samples. Same vessels, equipment, etc. may contain more than one type of insulation. Asbestos materials may be covered by refractory, siding, or insulation. 3. Consult the appropriate section of this handbook if asbestos is present. Materials containing more than 0.1% by weight must be handled as asbestos. 4. Put all asbestos waste (old insulation, transits, mastic, dust collector solids, disposable clothing, gaskets, packing, shingles, Kaveg piping, furnace refractories, jxnrp packing, pipe gaskets, brake shoes, etc.) in approved containers for disposal. The containers must be properly labeled to warn of the asbestos hazard and sent to the designated asbestos landfill. 5. Inform all personnel in the general area that asbestos work is in progress. DO NOT 1. Use materials containing asbestos (i.e. insulation, fireproofing, transits siding, Haveg piping, weatherproofing, and cooling tower materials) where an adequate alternate exists. MAJOR MANAGES APPROVAL IS REQUIRED when using asbestos materials for matching replacement/repair of existing asbestos covered structures or equipment if a suitable alternate is known. 2. Use asbestos labeled bags for disposal of general trash because of landfill permit requirements. 3. Sandblast or hydroblast materials containing asbestos. When sandblasting or hydroblasting adjacent areas, protect the asbestos materials from overblast. Examples of items to be protected are transite walls, pipe insulation, fireproofing, etc. 4. Use compressed air to remove asbestos materials. For example, do not clean brake drums and clutch housings with compressed air. This procedure may fill the surrounding atmosphere with asbestos fibers. An acceptable method is to use an approved vacuum. Dispose of the debris in approved containers and send to the designated asbestos landfill. -8-  0 /. S 0 0 1 $ SECTION V DO MOT'S 5. Eat, drink, smoke, chew guny'tobacco products, or apply cosmetics in a regulated area or a decontamination area. 6. Dry sweep asbestos materials 7. Spray asbestos-oontaining materials 8. Use hand-operated or power-operated tools (such as but not limited to saws, scorers, abrasive wheels and drills) without local exhaust ventilation if the use of these tools would cause asbestos exposures to personnel in excess of 0.2 fiber cc. 8 hr. TWA 9. Hang plants or pictures on structures covered with asbestos-containing materials 10. Sand asbestos-containing floor tiles 11. Damage asbestos-containing materials while moving furniture or other objects 12. Install curtains, drapes, or dividers in such a way that they damage asbestos-containing materials 13. Dust floors, ceilings, moldings or other surfaces in asbestos-contaminated environments with a dry brush 14. Use an ordinary'vacuum to clean up asbestos-containing debris 15. Remove ceiling tiles belcw asbestos-containing materials without wearing the proper respiratory protection, clearing the area of other people, and observing asbestos removal waste disposal procedures 16. Remove contaminated ventilation system filters without wetting. Do not shake. NOTE: Items 5 through 16 are directly from the OSHA Asbestos Regulations. -9- ST0G54734 SBC1TCN V SCME ASBESTOS-CCNIMNING MATERIALS IN BUILDINGS SUBDIVISIONGENERIC NAMEASBESTOS(%) DATES OF USE BINDER/SIZING Surfacing material sprayed-or trowelerf-on 1-95 1935-1970 sodium silicate, Portland cement, organic binders. Preformed thermal batts, blocks, and insulating products pipe covering 85% magnesia calcium silicate 15 6-8 1926-1949 1949-1971 magnesium carbonate calcium silicate Textiles clotha blankets(fire)a felts: blue stripe red stripe green stripe sheets a cord/rope/yarn tubing tape/strip curtains 100 90-95 80 90 95 50-95 80-100 80-85 90 1910-present 1920-present 1920-present 1920-present 1920-present 1920-present 1920-present 1920-present 1920-present none cotton/wool cotton cotton cotton cotton cotton/wool cotton/wool cotton/wool (theatre, welding) 60-65 1945-preserrt cotton Cementitious concrete-like Paper products extrusion panels: 8 corrugated 20-45 flat 40-50 flexible 30-50 flexible perforated 30-50 laminated 35-50 (outer surface) roof tiles 20-30 clapboard and shingles: clapboard 12-15 siding shingles 12-14 roofing shingles 20-32 pipe 20-15 corrugated: high temperature 90 moderate temperature 35-70 indented 98 millboard 80-85 1965-1977 1930-present 1930-present 1930-present 1930-present 1930-present 1930-present 1944-1945 unkncwn-present unknown-present 1935-present 1935-present 1910-present 1935-present 1925-present Portland cement Portland cement Portland cement Portland cement Portland cement Portland cement Portland cement Portland cement Portland cement Portland cement Portland cement sodium silicate starch cotton and organic binder starch, lime, cla; -10- SECTION V SOME ASEEETOSHXNTAININS MATERIALS IN BUILDINGS SUBDIVISIONGENERIC NAMEASBESTOS (%) DATES OF USE BINDER/SIZING Roofing felts smooth surface mineral surface shingles pipeline 10-15 10-15 1 10 1910-present 1910-present 1971-1974 1920-present asphalt asphalt asphalt asphalt Asbestos-containing compounds caulking putties 30 adhesive (cold applied]) 5-25 joint compound roofing asphalt 5 mastics 5-25 asphalt tile cement 13-25 roof putty 10-25 plaster/stucco 2-10 spackles 3-5 sealants fire/water 50-55 cement, insulation cement, finishing cement,magnesia 20-100 55 15 Asbestos ebony products 50 1930-present linseed oil 1945-present asphalt 1945-1975 asphalt unkncwn-present asphalt 1920-present asphalt 1959-present asphalt unkncwn-present asphalt unkncwn-present portland cement 1930-1975 starch, casein. synthetic resins 1935-present caster oil or polyisobutylene 1900-1973 clay 1920-1973 clay 1926-1950 magnesium carbonate 1930-present Portland cement Flooring tile and Sheet Goods vinyl asbestos tile 21 asphalt/asbestos tile 26-33 sheet goods/resilient 30 1950-present 1920-present 1950-present poly(vinyl) chloride asphalt dry oils Wallcovering vinyl wallpaper 6-8 unkncwn-present - Paints and coatings roof ooating air ticflit 4-7 1900-present 15 1940-present asphalt asphalt to --l CD CD cn --j CO cn SECTION v ASBESTOS AWARENESS SUBJECT: Example pictures of past asbestos uses. Partial listing of examples that we must handle according to the guidance provided in this manual. Figure 1. Many of our daily jobs involve repairing flange leaks, replacing valves, etc. The old Insulation that Is removed in many cases will contain asbestos. Figure 2. Asbestos insulating tape has been commonly used In the past to Insulate small lines and tubing. ST0054787 SECTION ASBESTOS AWARENESS SUBJECT: Example pictures of past asbestos uses. Partial listing of examples that we must handle according to the guidance provided in this manual. Figure 3. There still remain some asbestos blankets that need disposal. Figure 4. Also used In past years was fiberglass Insulation mixed with asbestos fibers. ^::;on v ASBESTOS AWARENESS SUBJECT: Example pictures of past asbestos uses. Partial listing of examples that we must handle according to the guidance provided In this manual. Figure 6. Asbestos Insulation blocks In combinations with refractory materials exist in many of our boilers and furnaces. -14- SECTION v ASBESTOS AWARENESS SUBJECT: Example pictures of past asbestos uses. Partial listing of examples that we must handle according to the guidance provided In this manual. Figure 7. Transi'te which contains asbestos has been extensively used In the past In many applications In Texas Operations such as cooling towers, buildings, warehouses, etc. Asbestos is also present in cemesto board and asbestos siding shingles which were also used in various type buildings. Figure 8. Our most extensive use of asbestos In the older plants was the thousands of square feet used on piping and equipment Insulation. .1C. ASBESTOS AWARE:,'ESS SUBJECT: Example pictures of asbestos uses. Partial testing of example that we must handle according to the guidance provided in this manual. Nonfnable wallboard with friable sprayed-on material behind Pipe lagging Figure 6 Examples of asbestos-containing materials found in buildings. -16- OO O Q CjI AD CO STOOb'4791 SECTION V ASBESTOS AWARENESS SUBJECT: Example pictures of asbestos uses. Partial testing of example that we must handle according to the guidance provided in this manual. -17- 2 6 if|t;00iS SECTION VI ASBESTOS MAD/raaNCE PROGRAM MINIMUM REQUIREMENT An maintenance program must be initiated in all facilities that have asbestos-cantaining materials. Such a program shall include: 1. Inspection of buildings and process areas to determine the presence or absence of asbostyis containing materials. 2. Development of an inventory of all ashestos-ccntaining materials in the facility. The inventory may be a blueprint, diagram or written description which identifies the location and approximate amount of asbestos. Records must be maintained until the asbestos-containing materials are removed. 3. Maintenance of all labeling of asbestos-containing materials in the facility. 4. Prompt clean up of any asbestos contamination. 5. Examination of all asbestos-oontaining materials semi-annually to detect deterioration. If deterioration is found. Industrial Hygiene Services must be notified to assess the potential for asbestos fiber release. 6. Written procedures for handling asbestos materials during the performance of maintenance, demolition and renovation activities. 7. Training for personnel who may be required to handle asbestos-containing materials as outlined in the Training Section of this Handbook. 8. Documentation of compliance with this program. -18- EG/JiCOOlS SECTION VTI NUmiemCN OF eemouticn or renovation work It is the responsibility of the superintendent/cwner to contact Environmental Services (2414) 25 days prior to the start of any reportable asbestos project. Jobs to be reported are: (1) Demolition which involves the removed, of friable asbestos material. (2) Renovation in which the cumulative amount of friable asbestos removed in a calendar year exceeds 260 linear feet on pipe or 160 square feet on other facility components. -19- hG .Z i S0 S` 0 1 section vrn HAZARD CCJMJNICATICN 1. Tahols; LABELS MAY BE AFFIXED INDIVmiALLY TO ITEMS OR A WARNING SIGN MAY BE PLACED AT THE ENTRANCE TO THE BLOCK OR AREA. All products that contain asbestos in concentrations that exceed 0.1% by weight oust be labeled. Labeling must be done in accordance with the requirements of 29 CFR 1910.1200 (f) of OSHA's Hazard Gctnnunication standard. CONTAINS ASBESTOS FIBERS AVOID CREATING DUST CANCER AND LUNG DISEASE HAZARD 3" x 5" Vinyl Asbestos Hazard Labels Dow Stock #01-03372 Red "Danger'1 on white background - Black block lettering SOME MATERIALS IN THIS BLOCK MAY CONTAIN ASBESTOS CONSULT SUPERVISION FOR SPECIFIC INFORMATION WHEN WORKING WITH ASBESTOS AYOIO CREATING OUST ASBESTOS IS A CANCER & LUNC DISEASE HAZARD f -20- 14" X 20" Asbestos Hazard Labeling Area Sign Dow Stock #01-03374-010 Red "Danger" on white background - Black block lettering SECTION vm HAZARD OMUNICATICN 2. Regulated Area Sign: Warning signs mist be posted to demarcate a regulated area and must be posted at such a distance that an enployee may read the signs and take necessary protective steps before entering the regulated area. ASBESTOS CANCER ANO LUNG DISEASE HAZARD AUTHORIZED PERSONNEL ONLY RESPIRATORS AND PROTECTIVE CLOTHING ARE REQUIRED IN THIS AREA 14" X 20" Asbestos Hazard Sign Dew Stock #01-03374 Red "Danger" on white background - Black block lettering SG^lGOOlS 3. All containers used for disposal of asbestos waste must have an approved label. Special purpose, 6 mil, polyethylene bags are available through Dow Stock #17-30522. -21- ST005!>796 SECTION IX ' PACKAGING OF ASBESTOS WASTE FOR DISPOSAL 1. The reccntnended container is a 6-mil thick polyethylene bag. These bags are available through Dew Stock #17-30522. Other acceptable containers are polyethylene lined cardboard containers or polyethylene lined metal containers (drums, dempster boxes, or dino boxes). 2. Polyethylene bags labeled with an approved asbestos label must be used only for bagging asbestos waste. 3. When using bags, minimize the amount of void space or air in the bags to minimize their bursting during stacking and disposal. 4. All containers used for asbestos waste must be sealed to make them leak-tight. 5. Torn bags must be rebagged (double bagged) rather than repaired by taping. 6. Disposable clothing worn during asbestos removal, packaging, and disposal must be placed into properly labeled polyethylene bags and disposed of as asbestos waste. 7. An open-top 55-gallon steel drum containing a polyethylene liner may be used to accumulate small quantities of bagged and sealed asbestos waste (brake shoes, brake dust, garlock gaskets, etc.). The drum must have an approved warning label, be labeled for asbestos waste use only, and the top must be kept on except during deposit of waste. 8. All dempsters used for unbagged asbestos waste must contain a disposable polyethylene liner obtained from, or approved by, Environmental Operations. 9. Dempster boxes mist not be filled higher than the top of the walls. 10. Dempster liners mist be lapped over and secured for temporary closure whenever the job is discontinued for a prolonged period (overnight, holiday, weekend). 11. Dempster liners mist be securely closed before transport of the dempsters; the sides and ends are to be lapped over and then secured. Proper lapping and sealing procedures are provided in instructions by Environmental Operations. 12. Tie -dewns for dempster liners must be not attached to the dempster boxes. 13. All dempster boxes used for asbestos waste packaging and transport, and all packages of asbestos waste (including dempster liners) must be labeled with an OSHA-approved label. -22- L S i^S O O lS SECTION X ASBESTOS GASKET AND PACKING HANDLING MINIMUM REXTJIREMENrS STORAGE FACILITY Preformed gaskets and packing will be stored in a clean storage area. The storage area will be cleaned regularly with a HEPA filter vacuum to prevent accumulation of debris. REMOVAL If the gasket or packing to be removed is not adhered to the seating surfaces and can be removed by hand without breaking apart, remove and dispose of according to the asbestos disposal guidelines. If the gasket or packing is adhered to the seating surfaces so that mechanical means are used and this operation creates particles in the air or surrounding area, then as a minimum, the asbestos abatement minimum requirements for glove bags or small-scale short-duration jabs shall be used. -23- o e i'is io o is SECTION X ASBESTOS ABATEMENT MmDdM REQUIREMENTS GLOVE BAGS. * WEHRAL: 1. Employees who work with asbestos mist receive training in asbestos hazards before the initial assignment and annually thereafter. 2. A specific job procedure must be written before beginning the job. SAFETY: 1. Safety equipment required by the job location mist be worn. 2. An approved respirator mist be worn during material removal and cleanup. Employee must have completed the mandatory fit test within the last 6 months. Contact 3536 for information. 3. Vacuum equipment mist be equipped with a HEPA filter. 4. Water for wetting mist contain a surfactant. REMOVAL: 1. The glove bag must be fitted to the pipe or structure where asbestos work is to be done. Insert the necessary tools into the bag. Attach bag to the pipe or structure and seed, all openings with tape. The bottom seam of the bag must also be reinforced with tape to prevent leakage from the bag that may result from a defect in the bottom seam. 2. An opening must be made in the bag away from the work area. A spray nozzle must be inserted through this opening and the area to be worked sprayed until it is thoroughly wetted. Continue wetting dry material as it is exposed. Dry material in the bottom of the bag must be wetted. Wetting of materials may be eliminated if water is not compatible with the process or materials or equipment may be seriously damaged. 3. After removal of the layer of asbestos containing materials, the pipe or surface must be cleaned with a wire brush and wet wiped until no traces of asbestos containing material can be seen. 4. Exposed asbestos must be encapsulated at terminations. 5. Tools most be wetted and cleaned. Place the tools such that they may be removed after the bag is twisted and seeded. 6. A vacuum hose mist be inserted through the opening used for wetting and used to remove any air from the bag that may contain asbestos fibers. The bag must be squeezed as close to the top as possible, twisted and sealed with tape to keep the asbestos materials safely in the bottom of the bag. 7. Remove the bag from the work area and remove tools. 8. The top portion of the bag and the opening used for wetting must be resealed with tape. 9. Disposal of the glove bag must be in an approved container. -24- STOOj 4799 SECTION X ASBESTOS ABATEMENT MINIMUM REQUIREMENTS SMALL-SCALE SHOKT-DURATICN PROJECTS WHEN GIOVE BAGS ARE NOT USED. GENERAL; 1. Employees who work with asbestos must receive training in asbestos hazards before the initial assignment and annually thereafter. 2. Personnel in the general area must be notified that asbestos work is in progress. 3. A specific job procedure must be written before beginning the job. SAFETY: 1. Safety equipment required by the job location must be worn. 2. An approved respirator must be worn during material removal and cleanup. Employee must have completed the mandatory fit test within the last 6 months. Contact (409) 238-3536 for information. 3. Disposable coveralls with attached boots and hoods must be worn during cleanup and removal operations. Coverall boots may be worn over work shoes or inside rubber boots. 4. Vacuum and local exhaust ventilation systems must be equipped with HEPA filters. 5. Personnel monitoring must be done at the beginning of each job unless personnel wear supplied air respirators, or previous personnel monitoring of similar jabs shews 3 hour TWA exposure potentials less than 0.1 fiber/oc. Contact Industrial Hygiene Services (409) 238-1281 for information. 6. Water for wetting must contain a surfactant. 7. Local exhaust ventilation must be provided for hand operated or power operated tools (such as but not.limited to, saws, scorers, abrasive wheels, and drills) if the use of these tools would cause potential exposure levels to equal or exceed 0.2 fibers/cc 8 hour TWA. The efficiency of local exhaust ventilation systems must be verified by Industrial Hygiene Services. REGULATED AREA: 1. A regulated area must be established and asbestos warning signs posted to restrict access to authorized personnel only. 2. Area must be cleaned of existing asbestos contamination and other debris. 3. Portable objects must be removed to prevent contamination. 4. Coverings must be placed over remaining objects and underneath the work area. Scaffold landings must be covered. Materials must not be dropped to the ground. Pre-job planning must include provisions for keeping deteriorated material in place after jacketing is removed. 5. Mini-enclosures or negative pressure enclosures must be used for jobs whenever feasible if the potential exposure level may equal or exceed 0.2 fibers/cc 8 hour TWA (local exhaust ventilation or other engineering controls methods may eliminate the need for enclosures.) -25- ST00j !;000 SECTION X Snail Scale Asbestos Abatement Minimum Requirements Page 2 REMOVAL: 1. The materials must be wet down before, during, and after removal to prevent airborne emissions. Materials mist be thoroughly wetted, but not to the point that they crumble and turn to mush. Wetting of material may be eliminated if water is not carpatible with the process, or materials/equipnent may be sericusly damaged, or local exhaust ventilation reduces the potential exposure limit belcw 0.2 fibers/oc 8 hour TWA. 2. Material must be removed and placed into labeled polyethylene bags or containers approved by Environmental Operations. Bags or containers must be lowered to the ground, not dropped. 3. The surface fran which asbestos has been removed must be wetted and cleaned. 4. Exposed asbestos must be encapsulated at terminations. 5. After asbestos removal, a thorough inspection and cleanup of the area must be conducted. Pick up and dispose of coverings and double bag contaminated or broken bags. Vacuum the work area as required. 6. All items removed from the regulated area must be decontaminated. 7. Disposable coveralls, exposed area of skin and respirator must be vacuumed and boots must be decontaminated each time before exiting the regulated area. 8. Disposable coveralls must be disposed of in a sealed asbestos waste bag. 9. Work clothes must be vacuumed off. 10. All materials used to establish the regulated area must be removed. 11. Bags or containers must be transported to the .disposal area. Ci^ nj2Z<r\, j -26- SECTION X CONSTRUCTION OF MINI-ENCLOSURE {SMALL-SCALE, SHORT-DURATION JOB) 1. AFFIX 6-MIL THICK POLYETHYLENE SHEETING TO WALLS WITH SPRAY ADHESIVE AND TAPE. 2. COVER THE FLOOR WITH PLASTIC AND SEAL TO THE PLASTIC ON THE WALLS. 3. SEAL ALL PENETRATIONS SUCH AS PIPES OR ELECTRICAL CONDUIT WITH TAPE. 4. CONSTRUCT A SMALL CHANGE ROOM OF 6 MIL THICK POLYETHYLENE PLASTIC CONTIGUOUS TO THE MINI-ENCLOSURE. THE WORKER USES THE CHANGE ROOM TO VACUUM OFF HIS PROTECTIVE COVERALLS AND REMOVE THEM BEFORE LEAVING THE WORK AREA. TO? VIEW SCHEMATIC OF MINI-ENCLOSURE WOJUt AREA | CHANGE i I ROOM 1 I 0 8 `iSOOlS SIDE VIE* PLASTIC CURTAIN PLASTIC CURTAIN VACUUM MOSZ PLASTIC CURTAIN MOX AREA CHANCE ROOM CAUTION CONTAINS ASBESTOS V V&CUUM HOSZ -27- SECTION X ASBESTOS ABATEMENT MINIMUM REQUIREMENTS LARGE SCALE, IOJG DURATION PROJECTS. GENERAL: 1. The Superintendent/owner most contact Environmental Services (2414) a minimum of 25 days prior to starting asbestos removal work and specify a project supervisor. 2. The project supervisor must provide a written Safe Work procedure specific for each job which includes as a minimum the Safe Work procedures listed belcw. 3. The project supervisor must meet with the industrial hygienist, safety director r.>r the area, arid personnel performing the job to discuss the Safe Work procedure and arrange for audit and monitoring. 4. The project supervisor must arrange to have a "Competent Person" for the job. If work is contracted, the contractor must also provide a "Competent Person" to supervise the job. 5. Employees who work with asbestos must receive training in asbestos hazards before the initial assignment and annually thereafter. 6. Personnel in the general area must be notified that asbestos work is in progress. SAFETY: 1. Safety equipment required by the job location must be worn. 2. An approved respirator must be worn during material removal and cleanup. Employee must have completed the mandatory fit test within the last 6 months. Contact (409) 238-3536 for information. 3. Disposable coveralls with attached boots and hoods must be worn during cleanup and removal operations. Coverall boots may be worn over work shoes or inside rubber boots. 4. "Street clothes" must not be worn underneath disposable coveralls. 5. If work clothing is worn underneath, it mist be left in the "dirty roan" of the decontamination facilities. Contaminated clothing for laundering must be contained in a sealed asbestos waste bag and laundered in a manner which will minimize the release of asbestos fibers. Personnel laundering asbestos contaminated clothing must be informed of this requirement. 6. Vacuum and local exhaust ventilation systems must be equipped with HEPA filters. 7. Personnel monitoring must be done at the beginning of each job unless glove bags are used or personnel wear supplied air respirators or previous personnel monitoring of similar jobs shews 8 hour TWA exposure potentials less than 0.1 fibers/oc. Contact Industrial Hygiene Services (409) 238-1281 for information. 8. A decontamination area must be provided. It must be contiguous to the regulated area if feasible. Egress to the regulated area must be through the decontamination area. 9. Water for wetting must contain a surfactant. 10. Local exhaust ventilation must be provided for hand operated or power operated tools, such as but not limited to, saws, scorers, abrasive wheels, and drills if the use of these tools would cause potential exposure levels to equal or exceed 0.2 fibers/cc 8 hour TWA. The efficiency of local exhaust ventilation systems must be verified by Industrial Hygiene Services. 11. An Asbestos Safety Checklist must be completed for each job. -28- go --I o o cn -r~ CO CO f'O SECTION X Large Scale Asbestos Abatement Minimum Requirements Page 2 KBGUIATED AREA: 1. A regulated area must be established and asbestos warning signs posted to restrict access to authorized personnel only. 2. Area must be cleaned of existing asbestos contamination and other debris. 3. Portable objects must be removed to prevent contamination. 4. Coverings must be placed over remaining objects and underneath the work area. Scaffold landings must be covered. Materials must not be dropped to the ground. Pre-job planning must include provisions for keeping deteriorated material in place after jacketing is removed. 5. Glove bags, mini-enclosures or negative pressure enclosures must be used for jobs whenever feasible if the potential exposure level may equal or exceed 0.2 fibers/cc 8 hour TWA (local exhaust ventilation or other engineering controls methods may eliminate the need for enclosures). CO CD O Cl CO CD CO REMOVAL: 1. The materials must be wet down before, during, and after removal to prevent airborne emissions. Materials must be thoroughly wetted, but not to the point that they crumble and turn to mush. Wetting of materials may be eliminated if water is not compatible with the process, or materials/equipment may be seriously damaged, or local exhaust ventilation reduces the potential exposure limit below 0.2 fibers/cc 8 hour TWA. 2. Material must be removed and placed into labeled polyethylene bags or containers approved by Environmental Operations. Bags or containers must be lowered to the ground, not dropped. 3. The surface from which asbestos has been removed must be wetted and cleaned. 4. Exposed asbestos must be encapsulated at terminations. 5. After asbestos removal, a thorough inspection and cleanup of the area must be conducted. Pick up and dispose of coverings and double bag contaminated or broken bags. Vacuum work area as required. 6. All items removed firm the regulated area must be decontaminated. 7. All materials used to establish the regulated area must be removed. 8. Bags or containers must be transported to the disposal area. 'vc 0.' - 't c--' ,rc -29- ^lOCiSOOlS SECTION X TYPICAL DECONTAMINATION AREA LAYOUT WORE AREA DOUBLE FLAP EQUIPflENT/DIRTY CHANGE ROOM DOUBLE FLAP SHOWER DOUBLE FLAP CLEAN ROOM DOUBLE FLAP I -30 STG05K805 SECTION X DECONTAMINATION AREA (CONTIGUOUS TO WORK AREA) EXIT 1. REMOVE GROSS CONTAMINATION PROM SUIT. 2. REMOVE PROTECTIVE CLOTHING IN EQUIPMENT/DIRTY CHANGE ROOM AND DEPOSIT IN LABELED IMPERMEABLE BAGS. 3. WEAR RESPIRATOR INTO SHOWER AREA. 4. SHOWER BEFORE ENTERING CLEAN ROOM. 5. PUT ON STREET CLOTHES. 6. EXIT DECONTAMINATION AREA. -31- xsection DECONTAMINATION AREA (At a Remote Location) CLOTHING AND EQUIPMENT. 2. REMOVE CONTAMINATED CLOTHING. 3. PUT ON CLEAN SUIT AND PROCEED TO DECONTAMINATION AREA WEARING RESPIRATOR. 4. DEPOSIT CLOTHING IN DIRTY CHANGE ROOM. 5. WEAR RESPIRATOR INTO SHOWER AREA. 6. SHOWER BEFORE ENTERING CLEAN ROOM. 7. EXIT DECONTAMINATION AREA. OO --I o CD Cm CD CD O'* ENTRY 1. ENTER DECONTAMINATION AREA THROUGH CLEAN ROOM. 2. REMOVE At DEPOSIT "STREET CLOTHES" IN LOCKER. 3. PUT ON PROTECTIVE CLOTHING AND RESPIRATORY PROTECTION (STRAPS UNDER HOOD). 4. PROCEED TO WORK SITE AND ENTER ENCLOSURE/REGULATED AREA THROUGH EQUIPMENT ROOM. -32- /.OOiSOOiS SECTION X EXAMPLES OF NEGATIVE PRESSURE SYSTEMS WA WA Auxiliary I makeup air DF, Decontamination Facility; EU, Exhaust Unit; WA, Worker Access; A, Single-room work area with multiple windows; B, Single-room work area with single window near entrance; C, Large single-room work area with windows and auxiliary makeup air source (dotted arrow). Arrows denote direction of air flow. Circled numbers indicate progression of removal sequence. -33- SECTION X ASBESTOS ABATEMENT MINIMJM REQUIREMENTS NJKMJttVE CLUTCH AND BRAKE REPAIR CENTRAL: 1. Employees who work with asbestos cust receive training in asbestos hazards before the initial assignment and annually thereafter. 2. Do NOT use ccrpressed air to remove asbestos materials or dust from brake drums or clutch housings. 3. Place polyethylene: underneath the work area. SAFETY REQUIREMENTS: 1. Safety equipment required by the jab location must be worn. 2. An approved respirator must be worn during material removal and clean up. Employees must have completed the mandatory fit test within the last 6 months. Call 409-238-3536 for information. 3. Barricade area with yellow tape or rope to limit access. REMOVAL 1. Two methods can be used to reduce exposure to asbestos fibers. The Enclosed Cylinder/HEPA Vacuum System Method and a wetting method. A. The Enclosed Cylinder/HEPA Filter Vacuum System Method consists of three components. * A wheel-shaped cylinder designed to cover and enclose the wheel assembly * A ocmpressed-air hose and nozzle that fits into a port in the cylinder, and * A HERA-filter vacuum used to evacuate airborne dust generated within the cylinder by the ccrpressed air. B. The wetting method consists of spraying water containing a surfactant to loosen the asbestos containing residue and to capture the resulting airborne particles in the water mist. * Begin spraying the asbestos-containing parts at a sufficient distance to ensure that the asbestos particles are not dislodged by the velocity of the water spray. * When the asbestos particles are thoroughly wetted, the spray will be brought closer to the parts and the parts will be sprayed as necessary to remove grease and other material. * The parts must then be wiped with disposal rags or towels which must be placed in a labelled plastic bag and sealed while they are still wet. -34- CO --! CD CD CD CD CO SECTION X ASBESTOS ABATEMENT MINIMUM REQUIREMENTS 2. Replaced brake shoes or pads, clutch plates, disposable rags or towels and other contaminated materials for disposal must be handled as asbestos waste. -m \>-r f-: ' 3. When the job is completed, a thorough inspection must be made to ensure all asbestos contaminated materials have been picked up. Vacuum work area as required. oo -H CT5 O CJ1 CO CD <X) -35- 0 I 0 ;l G0 01S SECTION XI ASBESTOS SAFETY CHECKLIST JOB DESCRIFTTCN__________________ DATE LOCATION ________________________________________________ PRE-JOB REQUIREMENTS: 1. Environmental services contacted (ph 409 238-2414)? Yes Name: Date: Dow Project Supervisor: 2. Safe Work Procedure Written? Yes No Date: 3. Project Review Held? Industrial Hygienist: Date: Safety Director: Date: Dow Competent Person: Date: Contractor Competent Person: Date: Craftsmen: Date: Safe Work Procedure Approved: Yes No Hygiene Monitoring Required: Audit Required: Yes Yes No No Auditor Assigned Phone: No JOB REQUIREMENTS: 1. Safe Work Procedure Reviewed: 2. Regulated Area Established and Signs Posted: Negative pressure enclosure established: Yes Yes Yes NO No No Decontamination Area Established: 3. Personnel Trained: 4. Block Personnel Informed: 5. Auditor Notified: Yes Yes Yes Yes No No No No 6. Amended Water Available To Control Dust: Yes No 7. Has Disposal Of Asbestos Debris Been Arranged:Yes No 8. Arrangements For Clean-up Made: Yes No 9. Safety Equipment Required: __ Safety equipment required by the location __Approved respirator current fit test ___clean shaven __ Disposable coveralls with hood and boots__gloves 10. Arrangements for laundering work clothes Yes___No 11. Vacuum cleaners and local exhaust ventilation systems equipped with HEPA filters Yes_____No Note: Work nay conmence when Safe Work Permit issued. 12. Final cleanup cxnplete Yes_____No 13. Job complete: Dew Project Supervisor: Date: 14. Send completed checklist to Industrial Hygiene Services B-101. -36- section xn ASBESTOS ABATEMENT AUDIT CHECKLIST Job Description Date: Location: Removal by: Company Name 1. Regulated Area Established and signs Posted: Polyethylene or other coverings over floor & objects: YES YES NO___ NO____ 2. Decontamination Area Established: ContiguousRemote:location: YES NO___ Entry to work area only through decontamination area YES NO____ 3. Negative Pressure Enclosure Established: Floor Covered Walls Covered Area Ventilation OFF All Edges Sealed Penetrations Around Pipes and Conduit Sealed Entry Curtains Negative Pressure Achieved (-0.02" water) YES YES YES YES YES YES YES YES NO NO NO NO NO NO NO NO___ 4. Protective Equipment: Disposable Coveralls with Hood and Boots Coveralls Unzipped, Tom, or Cut Coveralls Used One Time Approved Respirator Type Used Clean Shaven Straps Uhder Hood Safety Equipment Required by location: Hard Hat Safety Glasses Goggles YES YES YES YES YES YES YES YES YES NO NO NO NO NO NO___ NO NO NO 07 H CD CD cn CO " " -37- z m s o o is SECTION XII ASBESTOS ABATEMENT AUDIT CHECKLIST 5. Work Practices: Material Worked Wet Material Kept Wet until Bagged & Seeded Material Too Wet, Mushy Insulation Broken Intentionally Material Dropped to Ground Removed Material Promptly Bagged Bags Tom or Left Cpen Visible Emissions HEPA Filtered Vacuum Used Smoking, Eating, Drinking, Chewing, Cosmetics Personnel Decontaminated Each Departure Shower Used by All Personnel Exposed Asbestos at Terminations Seeded with Encapsulant Work Area Cleaned After Completion 6. Personnel Monitoring Initial Monitoring Daily Monitoring Area Monitoring ContractorDow YES NO YES NO' YES NO' YES NO' YES NO' YES NO' YES___ NO' YES NO' YES____ NO' YES NO' YES NO' YES NO' YES NO YES NO' YES NO YES NO YES NO' OCMMENIS: SIGNATURE: ______________________.______________ ________ Industrial Hygienist/Safety Director cc: Project Supervisor Area Cwner Safety Director Industrial Hygienist Manager, Industrial Hygiene Services 1/25/87 db -38- e m s o o is APPENDIX A APFH3VED EQUIPMENT The equipment listed below has been approved for the specific use, but is not necessarily the only equipment available. Equipment which is not listed should not be purchased unless it fulfills seme specific need which is not fulfilled by listed items and has been specifically approved by the Texas Operation Protective Equipment Ccmnittee. For information call 5034. Personnel should be fitted with a respirator before ordering. Call 3536 for information. I. Respiratory Protection for Asbestos Fibers Airborne Asbestos . Concentration Approved/Required Supply Stock Respirator Source Number HEPA Cartridge < 2 fibers/cc Half-mask MSA Camfo II fitnal 1 Medium Large Stores 01-04122 01-04124 01-04126 01-04252 01-04252 01-04252 Scott Small Medium large Vallen 642S 64 2M 642L 01-04196 01-04196 01--04196 A.O. (American Optical) Small Safety Medium Centers Large 01-04173S 01-04173M 01-04173L 01-040680-500 01-040680-500 01-040680-500 < 10 fibers/cc Full facepiece/cartridge Scott-D-Vista Stores 01-04335 01-04196 A. O. Stars Safety Centers 01-04190 01-04068-500 Racal/Be3/P3 Stores 01-04800 01-04800 < 20 fibers/cc Positive pressure respirator: Full face power air-purifying respirator MSA Safety center Racal BE7/P3 * 01-04805 * 01-04805 Full Face Mask Supplied Air Scott-O-Vista Stores 01-4630 MSA Safety Center * Raced Dual-Air Vallen * NA * * Items are currently not part of the M&S System. information. -39- Call 7571 for ordering appendix a II. Respiratory Protection for a Combination of Chemical and Asbestos1 Airborne Asbestos Approved/Required Supply Stock Number Concentration Respirator Source Respirator Cartridge* < 2 fibers/cc Half-mask A. O. Star 5 Small Medium Large Vallen R55S R55M R55L R53AGHE R510VHE R530VAHE Soott Snail Medium large Vallen 64 2S 642M 642L 642AGHE 6420VHE 6420VAGHE < 10 fibers/cc Ful 1-Facepiece A. 0. Star 7 Vallen R7700 R53AGHE R510VHE R5300VAHE Scott-O-Vista Vallen 80217001/ 80245101 642AGHE 6420VHE 6420VAGHE *AHE - Acid Gas Cartridge & High Efficiency Filter OVHE - Organic Vapor Cartridges & High Efficiency Filter OVAGHE - Organic Vapor and Acid Gas & High Efficiency Filter III. Clothing: The following list of protective clothing has been shown to be impervious to asbestos fibers. Tyvek Disposable Paper Coveralls with attached Hood end Boots Small 01-03551-001 Medium 01-03552-001 Large 01-03553-001 Extra Large 01-03554-001 oo --I CD CD cn co -40'