Document jmoB6pOXJrJRYkkGdVz48oqv5

A. 1) V-l ] .WO saittv in:rAurui:,n ALCOA TECHNICAL CENTER T. .1. KOll.JOM Jvu.'i l.iTICT I .''AAAI 1 ALCOA Tl-.CIi-n 1 CAL CENTO 1979 November 06 RE: INDUSTRIAL HYGIENE ASPECTS OF REMOVING INSULATION CONTAINING ASBESTOS FROM THE COIL SHEET COATER* * Per your request of 1979 October 26, we have prepared recommended procedures for the removal of lagging containing asbestos from the Packaging Division coil sheet coater. * o answer any questions you may have. J. UAM1ANU bs Attachment cc: J. E. Devine, ATC - D II. Gayncr, ATC - A R. J. O'BTicn, ATC - A F. J. Pessolano, M.D., ATC - C J. R. Stemlcr, ATC - C E. E. Rumbergcr, Pittsburgh 7 M. B. Thomas/D. J. St. Jacques/Filc H. D. Belk, M.D., Pittsburgh 6 A. B. McKee, ATC S. J. Jack, ATC 411084 1414 5. The area of demolition must be roped off and posted. Such signs shall meet Federal Regulation bearing the following notation: Asbestos* Dust Hazard Avoid Breathing Dust Wear Assigned Protective Equipment Do Not Remain In Area Unless Your Work Requires It Breathing Asbestos Dust May Be Hazardous To Your Health These signs are available through Orr Safety Equipment Co., Louisvilie, Kentucky Ref 3 Brody Cat FIP-3 Page 128 Item $76230 Ref #5 Brody Cat FIP-3 Page 128 Item #74520 KPK 79-07-30 411084 1423 PROCEDURES FOR THE DEMOLITION OF ASBESTOS CONTAINING INSULATION MATERIALS Prior to any demolition, repair, replacement, or maintenance of insulation materials containing asbestos, Ken Karsten, Sr. Indus trial Hygienist, Extension 4710 must be contacted. if the asbestos content cannot be immediately verified, the assumption will be made that asbestos is present until subsequent sampling and analysis indicates otherwise. Given either the assumption of asbestos or actual confirmation of its presence in potentially hazardous con centrations the following procedures will be implemented: 1. Personal protective equipment will be provided each employee and its use mandated. This equipment is to include the following: (a) 3M 9910 disposable masks (Stock #220-630-9910) or supplied air respirators depending upon the poten tial for the liberation of asbestos fibers. (b) Disposable full body clothing. 2. All personal protective items are to be removed before leaving the work area for breaks and for meals. 3. All asbestos, disposed clothing, and vacuum catches must be contained and properly labeled. Interim con tainment prior to final disposal may include labeled tight fitting wooden receptacles or sealed plastic bags. Affixed to each such container should be a label stating: CAUTION* Contains Asbestos Fibers Avoid Creating Dust Breathing Asbestos Dust May Cause Serious Bodily Harm All receptacles must be labeled prior to use. 4. Where practicable all materials containing asbestos must be wetted down with a fine spray of water prior to hand ling. Where this is impractical vacuum removal of fines is recommended. Vacuum systems must be designed for asbestos collection, i.e. have sufficient filtration efficiency to prevent the reintroduction of asbestos into the work environment through the exhaust. KPK 79-07-30 4110841422 i XDUSTKJ Al. MYGJliNl: ASPECTS OP HliMOVJ NG 1MSULATI0M CONTAININC ASBESTOS 1-RO.M TUC^XjljL_S!n'in;_CqATHI{. Toxicity of Asbestos Asbestos lias been identified as the causative agent of asbestosir. and has bcc?n associated with an increased incidence of cancer. Exposure to asbertos does not necessarily lend to deleterious health effects for the individual, but does lead to a significantly increased incidence of such effects for an exposed population. Asbcstosis is the predominant illness attributable to inhalation of asbestos fibers. The disease manifests itself following exposures of either high asbestos concentrations for short time periods or, .more commonly, low levels for prolonged time periods. Although asbcstosis may become evident in as little as 18 months, the average latency period is 17 years. In asbestosis, fibrosis or scarring of the lungs develops rapidly, is not halted with the cessation of exposure to asbestos and may ultimately lead to death. Asbestos exposure has been associated with an increased incidence of bronchogenic (lung), mcsothelial (malignancy of the chest or abdominal, cavities) and gastrointestinal cancers. Cigarette smoke is a suspoctcd ,,co-carcinogcn,, for bronchogenic cancer. That is, it has been demonstrated that the risk of dying of.lung cancer is 92 times greater for an asbestos worker who smokes, than for an individual who neither smokes nor works with asbestos. The inhaled conccntratio4s known to induce cancer have not been established. Present knowledge, however, indicates that a level approaching zero exposure is required to prevent cancer. Obj ectivcs A. To minimize employee exposure to asbestos dust. B. To isolate and contain asbestos contamination to avoid un necessary exposure of personnel not directly involved in the project. Recommended Procedures A. Employee Notification 1. Packaging Division and contracting personnel should be instructed in the potential health effects of asbestos and the control methods described in the following paragraphs. I will conduct these discussions if you would please coordinate the scheduling with the contractor's personnel. I will also be glad to conduct similar discussions for Packaging Division personnel. 411084 1415 Jj Personal rfoice'i iva and lly 1. Employees engaged in insulation x'emoval and any other employee required to enter the restricted areas should don before entering: a) disposable- coveralls b) disposable shoe coverings taped at the pant cuffs c) cotton gloves taped at the sleeves d) disposable head covering c) half mask chemical cartridge respirator with high efficiency filters. 2. Smoking materials, food and drinks should not be permitted in the restricted area. 3. Before leaving the restricted area, employees should vacuum the protective clothing, remove the head covering, unzip the coveralls and carefully peel the coveralls off, with glove and shoe coverings remaining attached to the cover alls. ' The respirator is taken off last. Disposable protective clothing and used filter cartridges should be disposed in plastic bags, appropriately labelled for asbestos waste. 4. Respirators should be cleaned and sanitized at the end of every shift. 5. Employees should wash their hands, face and arms before eating, drinking or smoking. 6. Change Rooms: OSHA 29 CFR 1910.1001(d)(4) requires change rooms for fixed places of employment and this is not a requirement for contracted personnel. 7. Employees engaged in asbestos removal should be instructed to wash their hands and face before leaving work. C. Work Practice Controls 1. Restricted Area: The asbestos work area should be delineated with tape or rope and entrance signs should be posted that conform to the requirements of 1910.1001(1)(ii). Entry should be restricted to authorized personnel only wearing the protective clothing described in Section B. 2. Building A general ventilation systems should be adjusted or closed to avoid dispersalor distribution of asbestos dust out of the restricted area. 3. Plastic curtains should be used to drape and/or enclose the asbestos work area. 411084 1416 I'iastxc sheeting should be used where insulation may fall through floor gratings or nay otherwise be deposited in uicus uillicuit Lo clean. j. TJio use of liand operated or power tools including saws, scorers, abrasive wheels, and drills should not be per- mitted. 6. Only thoroughly wet insulation should be removed. In the process of removal, tdien any insulation becomes exposed, a fine water spray should be used. The same procedure should be repeated until all visible insulation particles have been removed from the equipment. 7. The insulation should be bagged as it is removed, rather than permitting it to fall for cleanup at a later time. 8. Surface contamination should be cleaned by vacuuming . and/or wet sweeping. Dry sweeping should not be permitted. Caution is advised in the selection of vacuums. ' Con ventional vacuums may not be effective in filtering asbestos and may only serve to exhaust the dust. An industrial vacuum equipped with a high efficiency particulate air (HEPA) filter is recommended. High efficiency, vacuums for toxic substances are commercially available. D. Environmental Surveillance 1. . Employee "breathing zone" and "general area" air samples should be obtained at select intervals throughout' the operation. 2. Once removal of the coil sheet coatcr is complete, industrial hygiene personnel should collect surface dust samples to assess contamination. E. Medical Surveillance 1. Employees engaged in asbestos removal should be provided with the medical examinations specified in 29 CFR 1910.1001(j) including the appropriate chest x-rays and pulmonary function tests. 2. The medical examination should determine those employees whose physical condition prevents the use of respirators. F. Waste Disposal Insulation waste, scrap, debris, asbestos contaminated clothing consigned for disposal and asbestos contaminated equipment should be disposed of in sealed plastic bags or other impermeable containers. 411084 1417 ii ij*.and coni aincr:: be labelled ; CAUTION CONTAINS ASBESTOS FIBERS BREAT1NG ASBESTOS DUST MAY CAUSE SERIOUS BODILY HARM JD/bs 1979-11-08 411084 1418 Hr. J. Damiano, ATC-C FROM ROBERT J. ORMESHER INGOT CASTING DIVISION ALCOA technical center - B TO MEMORANDUM 1980 October 15 RE: REMOVAL OF ASBESTOS CONTAINING LINING FROM FURNACES Most of the furnace equipment presently in service in the Ingot Casting Division was designed, fabricated and/or purchased during an era when most of the best insulating and refractory lining materials contained asbestos. Some of these pieces of equipment : i have recently been relined with asbestos free materials, but many still have the asbestos containing materials in place. Relining; remodeling, or even scrapping these items requires some special procedures to prevent asbestos exposure of either the worker or of non-involved employees. This memo details the special procedures^ that must be followed under these circumstances. _ Initial site preparation involves taking precautions to contain entrained asbestos fibers to the immediate work area. In the case of a melting furnace, a total enclosure made of plastic sheeting is required. It has to be erected in such a manner that it can be dismantled, when the old lining has been removed, so that all the dust is contained. Attaching the plastic to the inside of a lumber frame is recommended to allow for easy removal and packaging in approved containers. The size of the enclosure must be large enough'to contain the power equipment, an approved vacuum cleaner, and several 55 gallon specially marked steel drums. The crews working in the enclosure must wear special protective clothing and use special equipment. Disposable coveralls, gloves, hair covering (under the hard hats) and respirators approved for asbestos must be worn at all times when work is in progress in the enclosure. The coveralls are to be taped at the ankles and wrists. All disposable clothing is to be removed and discarded each time a workman leaves the work area. Shoes must be wiped with a damp rag or vacuumed so that the area outside the enclosure is not contaminated. Before leaving the contaminated area for any reason, the workmen shall vacuum the protective clothing, remove the head covering, unzip the coveralls and carefully peel them off, with gloves and shoe coverings remaining attached. The respirator is removed last. The disposable clothing and used filter cartridges shall be disposed of in plastic bags, appropriately labled for asbestos waste. Respirators shall be cleaned and sanitized at the end of every shift. Workers must wash all skin surfaces that have been exposed to asbestos before eating, drinking, smoking or leaving work. Any water that is used for these purposes must be placed in plastic bags -and then into the drums with the contaminated clothing. No smoking or eating is permitted while in the enclosure. ALCOA 4110841419 (*CV. M-) K. P. KARSTEN WARRICK OPERATIONS TO E. L. SMAY H&S^ Industrial Hygiene WARRICK OPERATIONS 1979 July 27 BOD S' ML!r EER - JD TBB cv5 CCD RMJ DB RE: ASBESTOS REMOVAL PROCEDURES - EQUIPMENT ROOM BUILDING 860 PHS MJV The attached guidelines supercede recommendations for asbestos removal last presented by Mr. L. L. Fox. You will note that there are no substantive changes from the procedures we discussed earlier. If you have any questions, please con tact me. I would also appreciate knowing the date (s) actual insulation removal will take place as I would like to observe the operation. K. P. KARSTEN KPK:bg Attachment cc: R. L. Parsons H. G. Sakoian - Pittsburgh a i rn /. 411084 1421 Memorandum 1980 October. 15 Page 2 During the removal of phosphate containing refractories the use of water as a dust suppressant is not permitted. It is possible to form several very undesirable gaseous reaction products with the water. Because of this, the general practice of not using water has been adopted. Hydraulically driven hammers or jack hammers with totally enclosed air systems rather than the standard pneumatic jack hammer must be used for removing the refractory lining. Removal of the asbestos containing insulation is best done with pry bars having a vacuum nozzle running continuously at the breakaway point. This material shall be bagged as it is removed rather than permitting it to pile up for cleanup at a later time. The objective for doing this carefully and effectively is to prevent contamination of non-asbestos refractory materials which must also be disposed of as asbestos. The cleanup of the enclosed area after the lining materials have all been placed in the properly marked containers must be thorough. The inside of the plastic enclosure, the furnace shell, both the inside and outside surfaces that could be dusty, and finally the floor must be cleaned with the special vacuum cleaner. When this is all completed, the plastic sheeting can be taken down, continuously folding the contaminated side to the inside, and placed in a drum for disposal. The disposal of all asbestos containing waste material as well as contaminated material requires special procedures. Asbestos containing insulation, contaminated refractory rubble, the used disposable clothing, loose material picked up with the vacuum cleaner, wiping rags, rinse water from the wiping rags, and finally the plastic enclosure sheeting must be packaged in plastic bags and then sealed in specially marked steel drums. All plastic bags and sealed steel drums shall be affixed with labels that read: CAUTION ; CONTAINS ASBESTOS FIBERS BREATHING ASBESTOS DUST MAY CAUSE SERIOUS BODILY HARM Labels with this wording are available in ATC stores. These drums must then be disposed of in an approved land fill. Most land fill facilities cannot accept this kind of waste so there is an incentive to completely fill the drums (the last waste from an Ingot Casting furnace had to be shipped to Alabama at a cost of almost $80/drum). ROBERT J. ORMESHER RJO:pm cc: R. E. Miller, ATC-B J. R. Stemler, ATC-C J. E. Devine, ATC-D A. B. McKee, ATC-C R. L. Schonbachler, ATC-D R. D. Blackburn, ATC-B L. Resch, ATC-B Information Copies to: A. J. Sartschev, Pgh E. Bd . Prceirjr. yy ,t Pxr1gh E. L. ~Rooy, Pgl 411084 1420