MT Asbestos Abatement flashcards
MT Asbestos Abatement · Build recall with a focused review session.
31 cards. Read the term and the definition here. The deck at the top of this page is optional.
- ACM weight threshold
- Any material containing more than 1% asbestos by weight is classified as asbestos-containing material and is subject to the full asbestos control program requirements.
- Presumed ACM rule
- Friable material installed before the facility's asbestos cutoff date with no valid bulk sample analysis is presumed ACM until proven otherwise by laboratory testing.
- Abatement notification timing
- Written notification to the regulatory authority is required at least 10 working days before abatement begins for projects exceeding the square-foot or linear-foot threshold.
- Emergency abatement reporting
- Emergency abatement must be reported to the regulatory authority within 24 hours, followed by written documentation of the circumstances and scope.
- Project manager duties
- The certified project manager maintains the site-specific work plan, verifies worker certification, approves monitoring results, and signs off on final clearance.
- Record retention period
- Bulk sample results, air monitoring data, worker certification records, waste manifests, and clearance documentation must be retained at least 3 years after project completion.
- Residential exemption limits
- Owner-occupied single-family residences are exempt from the program, but common areas of multi-unit buildings and work performed for compensation are covered.
- Personal exposure monitoring
- Personal air monitoring is required whenever workers may be exposed above the permissible exposure limit or short-term exposure limit during asbestos work.
- Area monitoring purpose
- Area monitoring verifies that fiber concentrations outside the regulated area remain below clearance thresholds and that containment is functioning properly.
- Regulated area demarcation
- The regulated area must have critical barriers, warning signs at every entrance, and negative-pressure containment limiting entry to certified workers in required PPE.
- Negative pressure target
- Containment must maintain a pressure differential of at least -0.02 inches of water column relative to adjacent spaces, verified with a manometer at least twice per shift.
- Decontamination sequence
- Workers exit through a clean room, then a shower, then an equipment room; PPE is removed on the dirty side and bagged before showering.
- Wet removal requirement
- ACM must be wetted with amended water before and during disturbance to suppress fiber release; dry removal is prohibited unless wetting creates a safety hazard.
- HEPA equipment rule
- All vacuums, negative air machines, and respirator cartridges used in the regulated area must be HEPA-filtered; non-HEPA equipment is prohibited.
- Clearance threshold
- Clearance requires visual inspection showing no visible debris followed by air samples below the clearance threshold, commonly 0.01 fibers per cubic centimeter by PCM.
- Visual inspection first
- Clearance air sampling cannot begin until a visual inspection confirms no visible dust, debris, or residue remains inside the containment.
- Waste manifest retention
- ACM waste must be bagged in leak-tight labeled containers and transported with a waste manifest; the generator retains a copy for at least 3 years.
- Half-face respirator minimum
- Half-face HEPA respirators are the minimum protection for Class II work; higher exposure levels require full-face PAPRs or supplied-air respirators.
- Full-face PAPR trigger
- A full-face powered air-purifying respirator or supplied-air respirator is required when exposure may exceed 10 times the permissible exposure limit.
- Critical barrier purpose
- Critical barriers seal openings, vents, and surfaces to prevent fiber migration from the regulated area into occupied or adjacent spaces.
- Bulk sample analysis method
- Polarized light microscopy with gravimetric analysis determines asbestos content by weight; results above 1% classify the material as ACM.
- Friable material definition
- Material that can be crumbled, pulverized, or reduced to powder by hand pressure when dry; friable ACM poses the greatest fiber release risk.
- Class II work definition
- Work involving removal of non-friable ACM that may become friable through cutting, grinding, or sanding; requires containment and HEPA respirators.
- Class I work definition
- Work involving removal of friable ACM such as thermal system insulation, surfacing material, or sprayed-on coatings; highest hazard class requiring full containment.
- Occupant protection plan
- A written plan describing how building occupants will be protected during abatement, including access control, notification, and monitoring procedures.
- Air sample calibration
- Air sampling pumps must be calibrated before and after each sampling event; post-calibration results outside 10% of pre-calibration invalidate the sample.
- Waste shipment labeling
- Containers leaving the regulated area must display the asbestos warning label and be sealed leak-tight before transport to the disposal site.
- Worker certification verification
- The project manager must confirm each worker's certification is current and valid for the work class before allowing entry into the regulated area.
- Site-specific work plan
- A written plan prepared for each project describing scope, containment design, work practices, monitoring, and emergency procedures; required before work begins.
- Clearance reoccupancy rule
- Occupants may reoccupy the space only after clearance air results are below threshold and the project manager signs the final clearance document.
- Emergency abatement definition
- Abatement necessary to respond to a sudden, unexpected event such as a pipe break or fire that creates an immediate hazard; subject to expedited notification.