Document vVEepMeZDoxjz3DEzRdRZM91q

f ' -SM.S5 (REV. 5-78) Shell Oil Company Interoffice Memorandum SEPTEMBER 5, 1986 Return Document to File X Record Copy in File information Copy Record Copy in Copy: Circulate: FROM: SR. INDUSTRIAL HYGIENIST, HEALTH i SAFETY, MFG. & TECH. \ \. TO: SEE ATTACHED DISTRIBUTION LIST SUBJECT: ASBESTOS GASKETING o For your information, the attached brochure from the Asbestos Information Association is somewhat dated (3/15/85), but it is a timely reminder of the Recommended Work Practices For Asbestos-Containing Gaskets. If the latest round of monitoring reveals significant exposure potential due to gasket handling. Head Office Engineering will be asked to revisit their September 1984 guidance on this subject. , ..... ......... P. J. Snyder PJS:bjd Attachment cc: K. C. Crawford A. D. Ditmar BT8624505 ABS-003041 INDUSTRIAL HYGIENE REPRESENTATIVES ANACORTES REFINERY D. D. SMART DEER PARK MANUFACTURING COMPLEX A. F. SCHMIT GEISMAR PLANT M. T. BARCLAY MARIETTA PLANT M. W. HERSHMAN MARTINEZ MANUFACTURING COMPLEX M. B. KOVACEVICH NORCO MANUFACTURING COMPLEX A. K. MENARD ODESSA REFINERY E. N. GEE TAFT PLANT 0. J. DELAUNE WILMINGTON MANUFACTURING COMPLEX S. V. SEVER WOODBURY PLANT R. NOCCO WOOD RIVER MANUFACTURING COMPLEX W. M. CUNNINGHAM HEAD OFFICE HS&E, S&IH G. L. GREENE J. D. RANSDELL V (I J BT8624505 ABS-003042 ( O; O Recommended Work Practices for AsbestosContaining Gaskets ABS-003043 n Contents Introduction.......................................................... 3 Asbestos and Health ............................................. 4 Summary of OSHA Asbestos Standard .............4 Products and Operations....................................... 5 Recommended Work Practices............................. 5 Storage .................... 5 Fabrication ......................................................... 5 Original Installation........................................... 6 Gasket Replacement........................................... 6 Housekeeping and Waie Disposal ................................................... 7 Appendix Federal Waste Disposal Standard ......................................... 9 Introduction The Occupational Safety and Health Act (OSH Act) in the United States and similar laws in Canada and other countries were enacted to ensure every worker a safe and healthy workplace. This legislation is far-reaching. It covers millions of employees and nearly every employer. The information and guidance in this booklet have been developed to assist in assuring compliance with the OSH Act and the Occupational Safety and Health Administration's (OSHA) standard for occupational exposure to asbestos dust (29 CFR Part 1910.1001). Because state or local regulations may differ from the OSHA standard, they should be reviewed to ensure total compliance. The use of good work practices is recognized as one of the means of reducing health hazards associated with exposure to asbestos dust. The recommendations that appear on the following pages were developed through experience, study, and field testing. They were designed to achieve safer and more healthful job site conditions when working with asbestos-containing gasket material. March 15. 1985 o ABS'003o44 I Asbestos and Health Exposure to asbestos fibers can increase the risk .. of developing certain diseases over a period of years. Diseases associated with inhalation of asbestos fiber are: asbestosis, a non-malignant scarring lung condition; cancer of the lung; mesothelioma - a rare cancer of the lining of the chest or abdominal cavities; and, possibly, cancer of the digestive tract. Extensive field monitoring has demonstrated that the proper use of asbestos-containing gaskets can result in dust levels which are less than an 8-hour TWA of 0.1 f/cc. By following the work practices recommended in this booklet when using, such products, dust levels can be minimized. Products and Operations It should be emphasized that the evidence of adverse health effects (malignant and nonmalignant lung disease) due to the combined action ofcigarette smoking and exposure in the workplace is well established. Workers who handle asbestos greatly reduce their health risks by not smoking cigarettes. We will continue to see cases of asbestos-related disease for some years because of the unfortunate legacy of excessive past exposures. However, the present state of scientific knowledge shows clearly that minimizing exposure to airborne asbestos dust reduces the risks of asbestos-related disease. Good work practices are one means of significantly reducing generation of dust. These work practices apply to the use of nonfriable asbestos-containing compressed, beateraddition, and gasket millboard material when furnished as precut gaskets or in sheets and rolls. Operations to which these work practices apply include; A. Storage ^ B. Fabrication ^ C. Installation ^ D. Replacement ^ E. Housekeeping and Waste Disposal ^ Recommended Work Practices Summary of OSHA Asbestos Standard Under the current OSHA standard for occupational exposure to asbestos dust, it is the employer's responsibility to assure that exposure of employees to airborne concentrations of asbestos fibers does not exceed the following permissible exposure levels: a. Eight-hour time-weighted average (TWA): 0-2 Tw fibers longer than 5 micrometers, per cubic centimeter (2 f.'cc). *2 F/cc OSHA Instruction CPL 2-2.21 A of February 18, 1981 states that the medical examination requirements of the asbestos standard will be required where the 7 to 8-hour TWA fiber concentration is 0.1 f/cc or greater. 4 A. Storage Gaskets materials arc typically received in three forms: sheets, rolls, and precut gaskets. Storaee areas should be kept clean and dust free, either bv wet sweeping or wirh the use of a vacuum cleaner fitted with a high efficiency particulate aerosol fHEPA) filter. Any information provided by the manufacturer, such as health warnings and handling requirements, should be retained. B. Fabrication 1. Handpunching Bolt holes are often made with the use of a hand punch and mallet. If feasible, the material should be dampened while it is being worked. All areas where hand punching takes place should be kept clean and dust free. Scraps of waste from hand punching should be disposed of in the proper manner. 5 () ABS '003045 2. Hand Shaping such as a wood chisel, in order to remove it Hand shaping of gaskets is carried out with the use of a scribe, pocket knife, or scissors. Gasket sizes are scribed onto a flat sheet of asbestos gasket material and then cut by the use of scissors or a pocket knife. The gasket material should be dampened during scribing and cutting, if feasible. In this in the largest possible pieces. -Where practicable, surfaces to be ground, scraped or brushed should be wetted. Work areas should be cleaned promptly. Unless airborne concentrations are known, \ respiratory protection is advisable. V Note: Some gaskets may be coated or surface operation, as in others involving asbestos, treated with a parting agent so that when work areas should be kept clean and dust gaskets are removed, there is no need for excess free and waste scraps should be promptly grinding, scraping or brushing. disposed of in the proper manner. J E. Housekeeping and Waste Disposal 3. Die Cutting - Hand Operated Press j Housekeeping is an essential part of any safe Gaskets are sometimes cut to size and shape operation. Airborne asbestos dust created on hand operated mechanical cutting by the lack of good housekeeping has the presses. The surfaces of these machines and i potential for harm to employees and others. the surrounding work area should be Keep work areas dean by wet wiping or wet ' maintained to be clean and dust free. Gasket sweeping, or by vacuuming with a unit scraps should be promptly disposed of in the equipped with a high efficiency paniculate _ _ proper manner. aerosol (HEPA) filter. NEVER DRY 4. Die Cutting - Power Press Power-operated presses used in gasket fabrication should be provided with local exhaust ventilation as needed. Maintain sharp dies to reduce burrs that will increase the potential for dust and require further handling. The work area should be kept in a clean and dust free condition. Note: Large pieces of gasket material left after the fabrication operation may be returned to storage for future use. j ! j . I | SWEEP OR BLOW ASBESTOS WITH COMPRESSED AIR. The scrap offeuts and webs from these operations arc not considered a "hazardous waste* under the Resource Conservation and Recovery Act (RCRA) and can be shipped to local landfills for disposal. Consult the Appendix for the federal regulations covering asbestos waste disposal. AVOID CREATING DUST. C. Original Installation No special controls are required. ' D. Gasket Replacement - Removal and Installation Replacing worn or scheduled service gaskets often requires the use of a scraper or a wire brush to remove all of the old gasket material from the flange surface before a new gasket is put into place. Begin by prving or levering off the old gasket with a scraner. 67 ABS-003046 Appendix ENVIRONMENTAL PROTECTION ACENCY 40 CFR part <1 (AD-FRL 2515-S) Nilioml Emtnission Standards for Harardoua Air Pollutants; Amendments lo Asbestos Standard Agency: Environmental Protection Agency (EPA) ACTION: Final rale {61.152 Standard for waste disposal for manufacturing demolition, renovation, spraying, and fabricating operations. Each owner' or operator of any source covered undenthc provisions of {{6I.I-M-6I.149 shall: (a) Deposit an asbestos-containing waste material at waste disposal sites operated in accordance with the provisions of {61.156: and (b) Discharge no visible emissions to the outside air during the collection, processing (including incineration), packaging, transporting, or deposition of any asbestos-conuining waste material generated by the source, or use one of the disposal methods specified in paragraphs (b)(1), (2). or P) or this section as follows: (I) Treat asbestos-conuining waste material with water. (1) Mu asbestos waste from control devices with water to form a slurry*, adequately wet other asbestos-conuining waste material: and (ii) Discharge no visible emissions to the outside air from collection. Bluing, and wetting operations, or use the methods specified by {61.154 to clean emissions containing particulate asbestos material before they escape to. or arc vented to. the outside air, and (iit) After wetting, seal all asbestos-conuining waste material in leaktight containers while wet-, and (iv) Label the conutncrs specified in paragraph (b)(lXiii) as follows: CAUTION Contains Asbestos - Avoid Opening or Breaking Container Breathing Asbestos is hazardous to Your Health Alternatively, use warning labels specified by Occupational Safety and Health Standouts of the Department of Labor. Occupational Safety and Health Administration (OSHA) under 29 CFR mO.IOOI(g)p)<;ii). (2) Process asbestos-conuining waste material into nonfruble forms: (!) Form all asbestos-containing waste material into nonfriable pellets or other shapes: and (ii) Discharge no visible emissions to (he outside air from eollee:ion and processing operations, or use the methods specified by }61.154 to clean emissions containing particulate asbestos material before they escape to, or arc vented to, the outside air. (3) Use an alternative disposal method that has received prior approval by the Administrator. {61.156 Active Waste disposal sites. To be an acceptable site for disposal of asbestos-conuining waste material under {{61.151 ar.d 61.132, an active waste disposal site must meet the requirements of this section. (a) Either there must be no visible emissions to the outside air from any active waste disposal site where asbestos-containing waste material 9 ABS-003047 hu been deposited, or the requirements of paragraph (c) or (d) of this section must be met. (b) Unless a natural bander adequately deters access by the general public, cither warning signs and fencing must be installed and maintained as follows, or the requirements of paragraph (c)(1) of this section must be met. (I) Warning signs must be displayed at all entrances and at intervals of 100 m (330 ft.) or less along the property line of the site or along the^ perimeter of the sections or the site where asbestos-containing waste material is deposited. The warning signs must: (i) Be posted in such a manner ar.d location that a person can easily read the legend; and (ii) Conform to the requirements of 31cm x 36cm (20* x 14*) upright format signs specified in 29 CFR 1910.143(d)(4) and this paragraph; and (iii) Display the following legend in the lower panel with letter sixes and styles of a visibility at least equal to those specified in this paragraph. L*icarf VCUM4 Arimw 1'uu U ca m SiU Senf. Sm Ghtf ot Block. DatMGbu ............ L9ca4K*)SiMSmr. Co*k or (bock. |ihi| Atbim Km* M Pom CoUmc irteui to Tow (iosi Spacing between any two lines must be at least equal to the bright of the upper of the two lines. (2) The perimeter of the disposal site must be fenced in a manner adequate to deter access by the general public. (3) Upon request and supply of appropriate information, the Administrator will determine whether a fence or a natural barrier adequately deters access by the general public. (c) Rather than meet the no visible emission requirement of paragraph (a) of this section, an active waste disposal site would bean acceptable site if at the end of each operating day, or at least once every 24-hour period while the site is in continuous operation, the asbestoscontaining waste material which was deposited at the site during the operating day or previous 24-hour period is covered with cither. (1) At least 13 centimeters (6 inches) of compacted nonasbestoscontaining material, or (2) A resinous or petroleum-based dust suppression agent that effectively birds dust and controls wind erosion. This agent must be used as recommended for the particular dust by the manufacturer of the dust suppression agent. Other equally effective dust suppression agents may be used upon prior approval by the Administrator. For purposes of this paragraph, waste crankcase oil is not considered a dust suppression agent. (d) Rather than meet the no visible emission requirement of paragraph (a) of this section, an active waste disposal site would be an acceptable site if an alternative control method for emissions that has received prior approval by the Adminstrator is used. Bra. 112 JCIIal af the Caa Air Aa l axxialtU <11 C S C. Tilt troilai) IFR Ooc. M-Wrj r.kU 4-1-U. |.i] im| 10 NORTH AMCRCA ASBESTOS INFORMATION ASSOCIATION 1745 Jefferson Davis Highway Arlington. Virginia 22202 i ABS-003049