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1. DHEC Disturbance of ACBM during renovations and demolitions Focus on environmental impact OSHA Disturbance of ACM during renovations, demolition, maintenance.

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Presentation on theme: "1. DHEC Disturbance of ACBM during renovations and demolitions Focus on environmental impact OSHA Disturbance of ACM during renovations, demolition, maintenance."— Presentation transcript:

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2 DHEC Disturbance of ACBM during renovations and demolitions Focus on environmental impact OSHA Disturbance of ACM during renovations, demolition, maintenance Work practices, training, exposure limits Focus on worker protection 2

3 Separate into smaller and smaller fiber bundles when disturbed or handled – up to 700 times smaller than human hair Resistant to heat, bacteria and chemicals Great tensile strength and stiffness Excellent electrical and thermal insulator Noise insulator Resistant to effects of friction and wear 3

4 1973 – banned in thermal, surfacing, fireproofing materials Commonly found in oFloor tiles (9 x 9 and 12 x 12) – most common oCeiling tiles oTSI (water, steam and chilled water lines) oFireproofing (Jones PSC, Law Center, Capstone) oTransite panels oTank insulation oAcoustical spray (popcorn) ceiling oRoofing felts and shingles oHigh temperature gaskets and valve packing's 4

5 Fireproofing material – sprayed on steel beams, columns and decking Added to concrete or other materials to enhance strength (i.e. siding, roofing shingles, wallboard, pipes, asphalt, vinyl) Acoustical plaster, textured ceilings Insulation of pipes/equipment 5

6 ACM – asbestos containing materials ACBM – asbestos containing building materials Friable – can be reduced to powder by hand pressure when dry EPA and OSHA define ACM as materials that contain more than 1% asbestos, by weight. Asbestos content can only be determined through analysis of bulk samples! 6

7 Majority of people who have died from asbestos exposure were asbestos workers, exposed to high concentrations each day with little or no protection. 7

8 Asbestosis Lung Cancer Pleural Mesothelioma 8

9 Scarring of lung tissue Macrophages Clear dose-response relationship Shortness of breath Latency period of 15 – 30 years 9

10 Entrances to mechanical rooms Entrances to regulated abatement areas Entrances to crawl spaces 10

11 Occupational Exposure – exposure at or above 0.1 fibers per cubic centimeter (f/cc) Maintenance, repair, renovation, demolitions that disturb ACM Fiber release from oFallout (old/deteriorated ACM) oContact (striking, cutting, drilling, air erosion) oReentrainment (sweeping, dusting, unfiltered vacuuming of settled dust) 11

12 Damage and deterioration oAvoid touching or disturbing ACM on ceilings, pipes, boilers oDo not drill, sand or scrape ACM oDo not attempt to clean friable ACM oCleanup only by HEPA vac and wet methods oDo not go above ceiling grid in PSC, Law Center, or Capstone 12

13 Applied in a friable state (fireproofing, acoustical insulation) Physical disturbance Contact with asbestos ceiling Damaged ceiling tile when removing Air erosion Delamination Water leaks from ceiling causes ceiling asbestos coating to pull away (delaminate) from base material. 13

14 Floor care oDo not sand or scrape asbestos flooring oStrip only with wet methods at speeds < 300 rpm. oDo not dust, dry sweep or vacuum dirt/debris where there is damaged ACM oJones PSC – wet wiping and HEPA vacs only for routine cleaning 14

15 Be familiar with health hazards of asbestos Be aware that some areas can contain ACM Report evidence of disturbance or damage to Work Report improper actions which could damage ACM 15

16 Due to recent soil sampling, all crawl spaces and mechanical rooms with dirt floors are being treated as contaminated Entry will be restricted to asbestos certified employees until poly is applied in the space Asbestos signs will be posted – DO NOT ENTER if you see this sign 16

17 17 DO NOT ENTER SOIL IS CONTAMINATED WITH ASBESTOS CONTAINING MATERIAL IF ACCESS TO THIS SPACE IS REQUIRED, CALL FACILITY


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