Document jgoQQdXJ1mX0pLwae8LmQgQ2R

`LAINTIFF'S EXHIBIT ST0037340 DOW-1720 GLOVE BAG REMOVAL OF PIPE INSULATION AN IMPORTANT ASPECT OF THE O&M PROGRAM AND OTHER REMOVAL PROJECTS by: John A. Dietrichs The glove bag method of removing asbestos pipe insulation is now wide ly accepted as an abatement techni que within the asbestos industry in the United States and several coun tries beyond our borders, including England, Canada and Sweden. In the U.S., it is recognized in OSHA and EPA guideline literature and in the Code of Federal Regulations. How ever, there have been mixed results based on fiber counts during glove bag removal projects. Informal poll ing of researchers and laboratories monitoring these projects has shown results ranging from "below detect able limits" to "several fibers per c_c_. 9 9 Several factors have been iden tified as contributing strongly to suc cessful glove bag peojects (those with low air counts): 1. ) Training-Glove bag workers who have received formal training from qualified training centers and "competent person(s)" usu ally perform better. Of particular note are workshops given at the five designated Asbestos Infor mation and Training Centers (Georgia Institute of Technology, Tufts University, University of Kansas, University of California at Berkeley, and University of Illinois at Chicago). Many states have set up programs through state academic institutions that offer excellent training, and often workshops, as well. 2. ) Experience As with most skills, on-the-job training and ex perience hone ability and give confidence to the worker. Usual ly this is best gained by pairing an experienced worker with a novice as an apprentice, when possible. 3. ) Adequate Supervision - Knowl edgeable and keen supervision is always critical to maintaining quality of work and ensuring that workers do not take shortcuts. The employer should be aware that the mere presence of on-site air-monitoring technicians from a laboratory does not necessarily constitute "adequate super vision," as they may not be perceived as having authority to direct activities. Even if these three factors are all addressed superbly, it is still possible to have high air counts during glove bag removal if two more factors are overlooked -that of the general con dition of the insulation, and loose asbestos already present in the work area. 4. ) Condition of Insulation - If the insulation is badly damaged or deteriorated, it must be stabilized before glove bag removal occurs. This may be done by wrapping poly sheeting around the pipe and insulation after gently vacuuming dust and loose par ticles with a HEPA vacuum, and/or gently misting the sur faces with amended water. The poly may be held in place by "candy striping" the polyed pipe with duct tape. If the insulation is in extremely bad condition, glove bag removal may not be the ap propriate choice. (Please note that any disturbance of friable asbestos warrants the use of per sonal protective equipment - res pirator and disposable clothing as a minimum.) 5. ) Loose Asbestos In Area-If loose asbestos or dust that may be con- laminated is in the work area, it should be HEPA vacuumed prior to beginning work. Once all these factors have been addressed, you are ready to move ahead with your glove bag project. However, one final consideration must be looked at before starting-the choice of glove bag style. Two basic choices are available at this time - the "Standard" glove bag and the "PVC" glove bag. THE "STANDARD" GLOVE BAG This was the first asbestos glove bag to come into common use, which occurred in the early 1980's. It consists basically of the following features: 1.6-10 mil. clear polyethylene bag. 2. Usually 40* by 60*, open at top only. 3. Separately attached sleeves and gloves, approximately centered on the bag. 4. A tool pouch of polyethylene attached inside the bag opposite the sleeves. 5. Stenciling on the bag to identify the contents. Usually: DANGER CONTAINS ASBESTOS FIBERS AVOID CREATING DUST CANCER AND LUNG DISEASE HAZARD 6. Some bags may have double sided tape to facilitate attaching the two open sides of the bag at the top. Other items needed to complete the glove bag removal kit will include: 1. HEPA vacuum with attach ments. NAC JOURNAL i an/i _ i...................... 398216 GLOVE BAG REMOVAL OF PIPE INSULATION bag. It is a generalized system that must be properly adapted to each situation. Its effectiveness will be determined by the users' knowledge of the goals of the procedure, the procedure itself, and a generous dose of common sense. Be sure to analyze each situation in this light before starting the work. B. The owner is responsible for en suring that the following steps are taken in preparation for us ing these specifications for the glove bag removal of asbestos: 1. Prior laboratory testing of material to certify it is in fact asbestos containing. 2. Requiring a complete respirator training program for workers involved in asbestos removal. 3. Ascertaining the qualifica tions of Contractors and their employees or "inhouse" employees that will carry out the removal procuedures. 4. Medical monitoring of workers as required by Federal and State laws. 1.02 Submittals (This section will include Federal, State and Local regulation and re quirement forms and notifications that must be submitted before or dur ing the abatement procedures.) Section 02090-2 2.00 PRODUCTS 2.01 Materials and Equipment A. Glove Appropriate "Stan Bag dard" glove bag. B. HEPA High Efficiency Vacuum Particulate Air filtration vacuum unit. Wiring must include a three wire system or ground fault circuit inter rupter for safety of operation. ' ' C. Respirator Dual cartridge asbestos dust may asbestos-rated be present and to respirator, using wear appropriate NIOSH rated filters protection. for asbestos. P. Bone Saw Disposable or reusable. For cut D. Disposable Disposable Clothing coveralls; hoods and booties (separate or as part of coverall). E. Asbestos Six mil. thickness Q. Razor Knife Disposal with asbestos warn- R. Hook Bags ing printed or Knife pasted on bag. S. Damp F. Water Three to five gallon Rag Pump capacity. Sprayer T. Wire Snips ting any thickness of insulation, but primarily where razor knife or other knife is too short. Disposable or reusable. Disposable or reusable. Used to wipe metal pipe clean of asbestos particles. Used to cut wire or G. Surfactant A wetting agent to add to water to in crease penetrating metal bands that hold insulation to pipe. ability. H. Duct Tape Preferably 3" width. U. Metal or 35 to 55 gallon Fiber capacity drum with Drum sealable top, marked to indicate asbestos I. Double Sided Tape J. Stapler Preferably Vi" wide. Suitable for V. Desig nated Shower Area contents. Either portable or existing in building, in case of accidental contamination. penetrating plastic and double-sided tape. 3.00 EXECUTION 02090-3 The following steps, if done with K. Wettable A glue-impregnated care and attention to detail, will Cloth cloth used in sealing isolate small sections of piping, exposed insulation valves, fittings, pipe knuckles, etc. left in place. so that asbestos containing insula tion or lagging may be removed L. Pipe In- Alternative to wetsuiation table cloth. End Caps without allowing fibers to become airborne outside the bag. Note that two workmen are required for each work site. M. Spray Glue `. Used to seal exposed remaining asbestos insulation if wettable cloth or end caps are unavailable. N. Barrier - * Tape ' Yellow with warn"ing. ''i-i:.5~. j -! >.'iTiliJi. O. Warning Yellow with black Signs lettering stating A. Isolate the area in which removal will take place by placing barrier tape at least 20 feet from all open , entrances to affected room. Lock from external entry all.but one entrance whenever possible. . Determine emergency exit provi- -vi sions, however-ideally inside panic bar fitted doors. Other- s - -wise, key available. A wider area . .may be blocked off with barrier tan* at of owner. NAC JOURNAL 398217 ST0G373U I Dufnm 3 ST0037342 NOTE: Plan to support bottom of bag when removal starts. The weight of insulation and water can strain even a well con- maining insulation is non asbestos containing, duct tape may be used instead. U. Wet-wipe all exposed pipe, valve, etc. surfaces one final time before proceeding with pipe or valve repair, or insula tion replacement. V. If completed with project, thoroughly HEPA vacuum work site surfaces. W. All disposable items used on project should now be put in a separate yellow disposal bag (wipe rags, glove used in tool removal, water used to clean tools, etc.). If no shower is re quired, disposable clothing may also be discarded. AIR MONITORING The building owner or project supervisor will determine in advance if air monitoring must be done. For small projects, of short duration. monitoring may not be done in every case. It is generally agreed that monitoring is always advised, if possi ble, to give physical evidence of ex posure levels. John A. Dietrichs Vice President, Asbestos Abatement Services, Inc. II North Parkway Square 4200 Northside Parkway, N. W. Atlanta, GA 30327 <404) 264-9053