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FILE NAME Packings and Gaskets PAG DATE 1985 DOC PAG059 DOCUMENT DESCRIPTION Recommended Work Practices for Asbestos- Containing Gaskets ASBESTOS INFORMATION ASSOCIATION 1745 Jefferson Davis Highway Arlington Virginia 22202 i- ~ Recommended | Work Practices | for Asbestos- Containing Gaskets MARCH 15 1985 Contents Introduction The Occupational Safety and Health Act OSH Introduction ......sscccscccvcccscavcceces 3 Act in the United States and similar laws in Canada and other countries were enacted to ensure every Asbeas ndtHeoals th 4 .........csccceccecees worker a safe and healthy workplace This legislation is reaching It covers millions of Summary of OSHA Asbestos Standard ...... 4 employees and nearly every employer The information and guidance in this booklet OperaandtOi peroatnios ns ........eccecsecses S have been developed to assist in assuring compliance with the OSH Act and the Occupational RecommWoerknPd race ticd es ...... cocevese S Safety and Health Administration's OSHA a standard for occupational exposure to asbestos dust Storage ....ccccwvcccccccccecccee ceceeee S 29 CFR Part 1910.1001 Because state or local Fabrication ........ccccsccccccenccceees S regulations may differ from the OSHA standard they should be reviewed to ensure total compliance Original Installation ........ eee ceececence 6 Gasket Replacement .6 Housekeeping and Waste Disposal ......ccccccccscccccccnce T Appendix Federal Waste Disposal Standard ..........secccceeee 9 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 containing gasket material March 15 1985 Asbestos and Health Exposure to asbestos fibers can increase the risk of developing certain diseases a over period ofyears Diseases associated with inhalation of asbestos fiber are asbestosis a 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 It should be emphasized that the evidence of adverse health effects malignant and nonmalignant lung disease due to the combined action of cigarette 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 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 disease Good work practices are one means of significantly reducing generation of dust Summoa f OrSHyA _ 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 weighted average TWA Two fibers longer than 5 micrometers per cubic centimeter 2 cc b Ceiling concentrations Ten fibers longer than 5 micrometers per cubic centimeter 10 cc OSHA Instruction CPL 2-2.21A of February 18 1981 states that the medical examination requirements of the asbestos standard will be required where the 7 to hour TWA fiber concentration is 0.1 cc or greater 4 Extensive field monitoring has demonstrated that the proper use of containing gaskets can result in dust levels which are less than an hour TWA of 0.1 cc By following the work practices recommended in this booklet when using such products dust levels can be minimized Products and Operations These work practices apply to the use of nonfriable 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 A. Storage Gaskets materials are typically receiveidn three forms sheets rolls and precut gaskets Storage areas should be kept clean and dust free either by wet sweeping or with the use of a vacuum cleaner fitted with a high efficiency particulate aerosol HEPA 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 S 2. Hand Shaping 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 ofscios r as poco ketr kns ife The gasket material should be dampened during scribing and cutting if feasible In this operation in others involving asbestos work areas should be kept clean and dust free and waste scraps should be promptly disposed of in the proper manner 3. Die Cutting - Hand Operated Press Gaskets are sometimes to size and shape on hand operated mechanical cutting presses The surfaces of these machines and the surrounding work area should be maintained to be clean and dust free Gasket scraps should be promptly disposed ofin the proper manner 4. Die Cutt-iPonwegr Press operated presses used in gasket fabrication should be provided with local exhaust ventilation as needed Maintain sharp dies toreduce burrs that will increase the potential for dust and require further handling The work area should be kept in clean and dust free condition Note Large pieces of gasket mater lefit aaftler the fabrication operation may be returned to storage for future use Original Installation No special controls are required D. Gasket Replacement - Removal and Installation . Replacing worn or scheduled service gaskets often requires the usofea scraorpa ewir re brush to remove all of the old gasket material from the flange surface before a new gaskeits put into place prybyiprnyigng or levering off the old gasket with a scraper ^' E. k such as a wood chisel in order to remove it 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 Note Some gaskets may be coated or surface treated with a parting agent so that when gaskets are removed theries no need for excess grinding scraping or brushing Housekeeping and Waste Disposal Housekeeping is an essential part ofany safe operation Airborne asbestos dust created by the lack of good housekeehpasinthge potential for harm to employees and others Keep work areas clean by wet wipiornwg et sweeping or by vacuuming with a unit equipped with a high efficiency particulate aerosol HEPA filter NEVER DRY SWEEP OR BLOW ASBESTOS WITH COMPRESSED AIR The scrap offcuts and webs from these operatiaroe nnost consiadhaezarrdeouds 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 transporting ' . : . f Mix asbestos asbestos Weste escape clean contain g mixing (iv). " escape clean cuisionscuisions CAUTION Label Afterta, ( AfterAfter capeor CAUTION cuisonCAUTION ii .Label containers the weting,are ContainsContains Avoid andsaolniivteont,ed AlternativelyBHreeaatlhitnhgAHlteeranaltitvehly AASlsttebrenaastnitvodelsyards warning the 2 contaiers Safetyspecifed Safety asbestos Form outside Form ( asbestos ( in pallets paletsair; palletsii visible pargph asbeto-cnaig Discharge escapo procesing and escapoescapo containing procesing Active weste by approvalaproval alternative (b)1i procesingaprovalprovalTo ActiveActiv. e acceptable material material 61.151 meet as material in metprocesingfolows: Either leak- anyany activea- disposal has been deposited or the requirements of paragraph c or d of this secmt ustibeomn et b Unless a natural barrier adequately deters access by the general maintaasifn ole lod ws or the requi of r pare agrm aphe c nt of ts his secmt ustibeomn et ee ( 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 ee en periom f te he t sece tior ns of the site where containiwnasgte ee depoiss dieptoseitd ed The warsnigi ns n mug st ( Be posted in such a manner and location that a person can easily read the legenandd ii Conform to the requirements of 51cm x 36cm 20 x 14 upright format signs specified in 29 CFR 1910.145 1910.145 and this paragraph and iii Display the following legend in the lower panel with letter sizes and styles of a visibility at least equal to those specified in this w= Legend, Asbestos Waste Dispomi Natation 2.5 cm 1"Sans Serif Gotoh r Bi lac ck Do.act Corset DEM oe crccscces 1.9 cm 16"Sans Serif Gotoh r Bi lac ck ne Your ia Har adtoo Youw r Hes alth 14 Point Gothic e Meee * BO Ne me Spacing between any two lines must be at least equal to the 8 height of the upper of the two lines tme 2 The perimeter of the disposal site must fenced in a manner - adequate to deter access by the general public ( 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 be an acceptable site if at the end of each operating day or at least once every hour period while the site is in continuous operation the asbestos- yo operating day or previous hour period is covered with either ( At least 15 centimeters 6 inches of compacted nonasbestos- containing material or 2 A resinous or petroleum dust suppression agent that used as recommended for the particular dust by the manufacturer of the 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 appr prio or v appa rovl al by the Adminstrias tusoerd Sec 112 and 301 of the Clean Air Act as amende4d2 U.S.C. 7412 7601 FR Doc 84-9060 filed 4-4-84 8:45 am 10