__X__ INDOOR _____ OUTDOOR
Minimum PPE: Saftey glasses, Splash goggles, particulate respirator for tile dust (asbestos and non-asbestos), carbon respirator for mastic fumes, work gloves for tile, latex gloves covering forearm for mastic, protective apron, rubber boots for mastic, steel toed boots for tile.
Optional PPE: (1) Full protective suit (2) full-face power-assisted respirator (3) negative air machine (4) Containment confined space with shower and decon unit. Required if asbestos tiles not removed intact by hand, heat gun or dry ice. (5) air quality monitoring in case negative air machine pulls bad air from somewhere. Also need to consult with Safety to identify what fume levels are safe. Need fume-specific air monitor device or calibrate the Pentane setting (petroleum product Chemsafe 100C). (6) Airless sprayer to settle the dust or encapsulate airborne fibers.
Note: Our number one complaint is for fumes. The flammability became an issue when we shifted from small area on hands-knees to a whole room floor covered with solvent wearing rubber boots and hand tools become tools on handles. The worker is lifted out of the heavier-than-air fumes usually below 3 feet, but total fumes are greater.
Training Required: OSHA-approved 40-hour Supervisor course and 8-hour annual refresher course.
Chemicals used: Process to remove floor mastic. Mastic + Solvent = nastySolution. How to get it from the floor to labeled, regulated disposal bag? Solution + Absorbent = you can pick it up and put it in the bag. MSDS says the absorbent should be "kitty litter" (nonflammable). We use cotton towels, and bales of shredded newspaper (flammable especially if floating lint is excessive). The chemicals fall in two groups-- mastic solvents and fiber encapsulants.
(1) Chemsafe 100C Mastic Remover...petroleum product. Fire diamond 1-2-0 PPE H (slight health risk-moderately flammable-non combustible). The vapor has a low flashpoint. The ignited vapor could have a high enough temperature to ignite the liquid. In case of fire, do not use water. Use foam, CO2, mist of H2O, dry chemical. The vapor is heavier than air, usually below 3 feet. What is the SPARK RISK? Electrical outlets are close to the floor. Pulling an electric plug from the wall while appliance is running could cause the vapor to ignite. Also use of heat gun nearby. Ventilate well.
(2) Bean-e-doo Mastic Remover...alcohols from soy. Fire diamond 1-1-0. The fumes are slightly flammable. The big danger is rags soaked with solvent can spontaneously combust under certain circumstances, but MSDS doesn't specify.
(3) Chemsafe 400 Carpet Adhesive Remover...forms of ethanol. 2 links for MSDS. First is 9 pages and 2nd is 3 pages. First says fire diamond 2-0-0 and 2nd says 1-0-0. So health risk is moderate to slight.
(4) Chemsafe 500 Encapsulant Fiber Lockdown...acrylic polymer. Fire diamond is 1-0-0. Binds to fibers and encapsulates in acrylic polymer. Used with Airless Sprayer when airborne fiber is high, usually a containment.
(5) 22-P Penetrating & Lock Down Encapsulant...latex emulsion. Fire diamond 1-0-0.
(6) CC-2B Bridging Encapsulant...water-basted polyvynil acetate emulsion. Fire diamond 1-0-0.
(7) Foster 32-21 Blue acrylic sealant...acrylic copolymer.
(8) Fiberset PM Post-removal Surface Sealant...latex emulsion coating. Fire diamond 1-0-0.
(9) Pene Wet Wetting Agent & Surfactant...latex emulsion coating. Fire diamond 1-0-0.
For the MSDS, fire diamond, PPE chart: http://www.blairhawkins.net/AB/training/
Supervisor:
Dept/Unit: Environmental Remediation, WC 586, Project Services.
Your name: Blair Hawkins
Reviewed by:
Equipment used:
Additional comments:
This is part of the assessment. Other questions come up like, Is it a "confined space"? (a) Can enter bodily.
(b) Restricted access. (c) Not meant for human occupation. Examples: Sealed cargo space in the work van.
A living area set up for containment becomes a confined space. An asbestos containment is a confined space.
Is it a "permit-required" confined space? Yes because you need permission, notifications, inspections,
monitoring for most asbestos jobs.
(I) ACTIVITY
(A) Potential HAZARDS
(1,2,3) PROCEDURE/equipment/training
(I) *** FLOOR TILE REMOVAL ***
(A) Bad particulate air, dust from asbestos and non-asbestos sources. (1) Wear particulate respirator (1/2 face, full face, power-assisted). (2) Install negative air machine, so bad air is pulled into HEPA flter and filtered air vented outside. (3) Inhalation can cause respiratory injury, lung cancer, mesothelioma. (4) Disease risk is cumulative with exposure.
(B) Bad quality air if negative air machine pulls bad air from somewhere else. (1) Identify source of replacement air. (2) Use the 4-gas air monitor (O2, CO, H2S, Pentane). If air becomes bad, evacuate the space. (3) Eliminate the source. (4) Ventilate from known source of fresh air. (5) Consider coupling postive air from known source of good air.
(C) Eye injury from dust, particulates, flying debris, dry ice. (1) Safety glasses with side shields. (2) Full-face respirator. (3) Splash goggles. (4) Rinse eye with water or First Aid solution.
(D) Hand injury from sharp edges of floor tile, blisters from repeated motion. (1) Durable work gloves. (2) First Aid for cuts.
(E) Head injury from fall, trip hazard, bumping against low ceiling or pipes. (1) Identify trip hazards. Old mastic on floor, tiles and pieces stick to shoe, electric cords, hand tools, staircase, vacuum carrier wheels jam. (2) In case of serious fall, seek medical attention. (3) Record in daily log injuries of any kind.
(F) Foot injury from dropping bag of tiles on foot, or tile bar (1) Wear steel-toed safety boots. (2) If injury, First Aid, seek medical attention.
(G) Back injury from heavy lifting. (1) Lift with legs. (2) Ask for help to lift a heavy object. (3) Use dollies and wheeled carriers. (4) Seek medical attention for injury.
(H) Skin injury from sharp edges poking through rip-stop burlap bag and 6-mil disposal bag. (1) Wear work gloves. (2) Wear thick pants and protective suit to shield against sharp edges. (3) First Aid for cuts and scrapes.
(I) Disorientation from heat and dehydration from protective suit, hard labor, confined spaces. (1) Drink plenty of fluids. (2) Never do a removal on an empty stomach. (3) Pace yourself. Set time triggers when you will take a break even if you don't think you need one. (4) One person should have light duty to preserve a clear head and good judgment.
(J) Hazard from strangers, non-trained personnel entering the space. (1) Install the "Danger: Asbestos" warning tape, which is required by OSHA. (2) Escort non-trained personnel visiting the space. (3) Secure the space by locked door and warning signs when abatement is in hiatus.
(K) Burn hazard from electric heat gun, dry ice frozen carbon dioxide. (1) Heavy duty work gloves, not latex gloves which will melt. (2) Calm energy, steady undistracted work. (3) First Aid for burn.
(L) Fire hazard from heat gun. (1) Do not leave unattended. (2) Be aware of nearby mastic removal and accumulation of flammable fumes. (3) Do tile phase and mastic phase seperately, without overlap.
(II) *** FLOOR MASTIC REMOVAL ***
(A) Bad air from fumes. (1) Vapor respirator. (2) Negative air machine to ventilate. (3) Vapor/fume gas monitor. (4) Frequent breaks to fresh air.
(B) Bad quality air pulled in by negative pressure air machine. (1) 4 gas air monitor. (2) Identify source of replacement air, ensure source of good air. (3) Evacuate the space until well-ventilated.
(C) Eye irritation from fumes, splashing of liquid solvent, mastic solution. (1) Wear the Splash Goggles. (2) Rinse with water or First Aid solution.
(D) Respiratory irritation from fumes. (1) Do the work standing upright so breathing zone is abover heavier-than-air vapor zone. (2) Wear the carbon vapor respirator. (3) Ventilate the space with negative air machine. Identify source of replacement air. (4) Take frequent breaks to fresh air
(E) Hand injury from chemical burn and cuts from sharp edges of floor, wall. (1) Wear the latex or nitrile gloves covering forearm. (2) Be aware of nails, staples, splinters when hand work is required for fine cleaning. (3) Use the nylon scrub pad, holding where finger tip is an inch or two from surface. (4) Use tools on handles like razor scraper.
(F) Head injury from falls, trip hazards, low ceilings. (1) Identify trip hazards: Slick Solvent and Mastic solution, contrast with sticky untreated mastic floor, electric cords, air duct to carry filtered air to outdoors, vacuum wheels jam, using the electric floor buffer. (2) Calm energy, steady work undistracted by phones and troubles from home. (3) Move slowly so momentum won't carry you to a fall. (4) Record injuries in daily log.
(G) Foot injury while wearing the rubber boots in mastic removal phase. (1) You can drop something heavy on your foot, like bag of tiles still there from tile phase. Ripper-Stripper can cause foot injury. Buffer can slam or ride over your feet. Razor scraper and loose razors. (2) Calm focused energy. (3) First Aid medical attention. Record in daily log.
(H) Skin irritation from solvent splash, fumes, asbestos dust, heat, sweat, petroleum-based protective suit. (1) Symptoms could be redness, rash, bumps, warts, hard dry skin. (2) Identifying the source of a reaction can be difficult. So reporting and communicating with a knowledge base becomes important. (3) Reasonable accomodations with variety of protective suits, chemicals, gloves.
(I) Hazard from strangers and non-trained personnel entering the area. (1) People will trace the source of fumes and start asking questions. Be able to answer those questions. Right now I can refer people to my work journal website. The Training button has the MSDS for chemicals. Now this Job Hazard Analysis can be seen to give transparency and reassurance. The inspector, project manager, or safety can be called to deal with unruly public. (2) Place the warning signs and tape where they can be clearly seen as required by OSHA. Right now we have no sign for fumes, only for asbestos. The complaint will be, "I smell asbestos." (3) Secure the area when work is suspended.
(J) Fire hazard from ignition of fumes generated from chemical mastic removers. (1) Identify sources of spark or flame. Heat gun, electrical outlets, spark of floor scraper against metal, rags soaked with Bean-e-doo solvent can spontaneously combust, electric equipment like buffer catching on fire. (2) Ventilate the space. (3) Monitor the fume levels. (4) Follow disposal procedure. Seal bags air tight. (5) To extinguish mastic solvent fire, Do Not use water. Use foam, dry ice, dry chemical. (6) Have a chemical fire extinguisher on-hand in the van. Install it at every job with a fumes/fire warning placard.
(K) Burn hazard from chemical mastic removers. (1) Ingestion if you swallow solvent that splashes into your mouth. Do not induce vomitting. Seek medical attention. (2) Contact with skin. Wash with soap and water. (3) Contact with eyes. Flush with water or First Aid solution. (4) Inhalation to respiratory system. Retreat to fresh air. Medical attention.
(L) Disorientation from fumes, heat, and dehydration. (1) Ventilate the space with fresh air. (2) Wear the carbon vapor respirator. (3) Take frequent breaks to fresh air. (4) Drink fluids and eat snacks.
(M) Electrocution hazard with electric cord and liquid mastic remover on floor. (1) Use GFCI Ground Fault Circuit Interrupter. (2) Use cord with functioning ground wire, third prong. (3) Elevate the cords out of liquid puddles. (4) Do the rubber boots give any protection? Non-conductive would be a consideration in the selection.
There should be others.