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Asbestos control program

Scope

University of Waterloo's asbestos control program encompasses all work with asbestos containing material (≥ 0.5% asbestos) under UWaterloo control including buildings, equipment and grounds.

This program incorporates the requirements of Ontario Regulation 278/05 designated substance - asbestos on construction projects and in buildings and repair operations. The program is reviewed by the UWaterloo Joint Health and Safety Committee.

Purpose

This program outlines procedures and controls to ensure safe working conditions when working with or near asbestos at UWaterloo.

The asbestos control program consists of the following elements:

Notification

To ensure that workers and occupants of buildings are not over exposed to asbestos, various notification procedures are required.

  1. Notification to occupants
  2. Notification to workers
  3. Registration of workers
  4. Notification to contractors/sub-contractors
  5. Notification of work

Notification to occupants

  1. Every entrance to locations containing friable asbestos material shall be posted with readily visible warning sign stating:

Notice: This is to remind you that asbestos is present in the ceiling. When working in the ceiling area, adhere to the regulations published by the Ministry of Labour.

  1. The following materials in buildings constructed prior to 1985 should be considered to contain asbestos and should be treated as such:
    • Vinyl floor tiles
    • Pipe insulation
    • Drywall joint compound
    • Stucco wall plaster
    • Ceiling stipple
    • Ceiling tiles

Notification to workers

  1. Every entrance to a location containing friable asbestos shall be posted with readily visible warning sign stating:

Notice: This is to remind you that asbestos is present in the ceiling. When working in the ceiling area, adhere to the regulations published by the Ministry of Labour.

  1. The following materials in buildings constructed prior to 1985 should be considered to contain asbestos and should be treated as such:
    • Vinyl floor tiles
    • Pipe insulation
    • Drywall joint compound
    • Stucco wall plaster
    • Ceiling stipple
    • Ceiling tiles
  1. Asbestos awareness training session for all workers who may work with or in proximity to materials that are (or are presumed to possibly be) friable or non-friable asbestos.
  2. Supervisors shall advise their workers of asbestos locations when the workers are working in close proximity to friable or non-friable asbestos containing material.
  3. In the event of discovery of suspected asbestos-containing material not on the inventory, a worker shall notify his/her supervisor immediately.

Registration of workers

  1. The Safety Office shall be notified by supervisor of any UWaterloo worker involved in a type II or III asbestos work.
  2. The Safety Office will submit an asbestos worker report (PDF) to the chief physician of the Ministry of Labour's Occupational Health Medical Service.
  3. The worker will receive a copy of the work report.

Notification to contractors/sub-contractors

  1. Departments must inform their contractor / sub-contractor of the location of friable or non-friable asbestos containing material that is in close proximity and may be disturbed by the work.
  2. Departments contracting work are responsible for ensuring that the contractor/sub-contractor follow work procedures under Ontario Regulation 278/05 and UWaterloo's asbestos control program.
  3. If the type of a friable asbestos is not known, it shall be treated as though it contained a type of asbestos other than chrysotile.

If the work is covered under a notice of project, the following procedure applies:

  1. The worker/contractor shall report the discovery immediately to the supervisor or project coordinator.
  2. The supervisor shall stop any work that may disturb the suspected asbestos-containing material.
  3. The supervisor shall immediately notify the Ministry of Labour Inspector nearest the workplace in writing and orally.
  4. The supervisor shall notify the Plant Operations Design Section (ext. 36897).
  5. Plant Operations design section will arrange collection and analysis of bulk samples as well as communication of results to required parties.
  6. Other than for the purposes of determining whether the material is asbestos-containing, no work must be done unless it is determined that the material is asbestos and the work classified and carried out according to proper procedures, or the work is performed as though the material is asbestos or in the case of sprayed on material, as though it contained a type of asbestos other than chrysotile.

Notification of work

The Ministry of Labour shall be notified when:

  1. Type I and II work is covered by a "notice of project" (covered by notice of project not Reg. 271/05).
  2. Prior to commencing type III asbestos work.
  3. Prior to commencing type II asbestos glove bag work when more than one square metre of asbestos is to be removed.

Discovery of suspected asbestos

If any unexpected discovery of suspected asbestos-containing material is made during the course of work:

  1. The worker shall report the discovery immediately to the supervisor.
  2. The supervisor shall stop any work that may disturb the suspected asbestos-containing material.
  3. The supervisor shall notify the Plant Operations design section (ext. 36897).
  4. Plant Operations design section will arrange collection and analysis of bulk samples as well as communication of results to required parties.
  5. Other than for the purposes of determining whether the material is asbestos-containing, no work must be done unless it is determined that the material is asbestos and the work classified and carried out according to proper procedures, or the work is performed as though the material is asbestos or in the case of sprayed on material, as though it contained a type of asbestos other than crysotile.

Suspected exposure to asbestos

If a worker believes they have had an inhalation exposure to asbestos in the course of employment, the worker should:

  1. Report the suspected exposure to the supervisor
  2. Complete an injury/incident report

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Asbestos training

Asbestos training for persons working with or in proximity to asbestos shall consist of the following:

  1. Asbestos hazards
  2. Asbestos work procedures
  3. Respirators
    • The use, cleaning and disposal of respirators
    • The limitations of the equipment
    • Inspection and maintenance of the equipment
    • Proper fitting of a respirator
    • Respirator cleaning and disinfection
  4. Use and care of high efficiency particulate air (HEPA) vacuum cleaner
  5. Job specific training (see work procedures)
  6. The Joint Health and Safety Committee shall be advised of the time and place where the instruction and training is to be carried out.

Asbestos hazards

Definitions

Asbestos is a general term given to a group of naturally occurring mineral silicates that are made up of long thin fibres. It was added to a wide variety of products to strengthen them, to provide heat or electrical insulation, to offer fire or chemical resistance, and/or to absorb sound. Asbestos containing products ranged from fireproofing to vehicle brake pads.

Friable material is material that when dry can be crumbled, pulverized or powdered by hand pressure or is crumbled, pulverized or powdered.

HEPA filter stands for high efficiency particulate aerosol filter that is 99.97% efficient in collecting a 0.3 micrometre aerosol.

Locations

Although Canadian legislation ended to the production of friable asbestos building products in the 1970's, some installation continued until the early 1980's.

The following materials in buildings constructed prior to 1985 should be considered to contain asbestos and should be treated as such:

  • Sprayed fireproofing on structural steelwork in buildings
  • Thermal insulation used as lagging for heaters, boilers, pipes and hot water tanks to retain heat or cold
  • Acoustic or decorative finishes on ceilings and walls
  • Asbestos-cement products, including roofing materials, acoustic paneling, electric insulation, laboratory bench tops, or water and sewage piping systems
  • Asbestos paper, felt or textile products, including door gaskets on furnaces and stoves, pipeline wrap, table pads, heat protective mats, electrical insulation, fire blankets, or protective clothing
  • Asbestos coatings, sealants and adhesives
  • Acoustic ceiling tiles
  • Vinyl floor tiles or vinyl sheet flooring

Health hazards

Occupational exposure

Asbestos fibres can have serious health effects when inhaled. As exposure increases and more fibres are inhaled, so does the risk of developing an asbestos related disease. To lower the risk of developing disease, measures must be in place to minimize exposure and accumulation of fibres in the lungs.

Asbestos related diseases are generally associated with exposure to high levels of asbestos over an extended period of time. Studies on workers in mines, factories and shipyards have shown that heavy exposures to asbestos can lead to three serious diseases:

  • Asbestosis (scarring of lung tissue)
  • Lung cancer
  • Mesothelioma (a rare form of cancer affecting the lining of the lungs)

These diseases may not appear for as much as 20-40 years after exposure to asbestos. Although the evidence is less clear, there is some suggestion that cancers of the gastrointestinal tract may be associated with asbestos exposure.

Studies have also shown that smoking increases the risk of disease, with smokers exposed to high levels of asbestos having a much greater chance of developing lung cancer than nonsmokers.

Exposure to asbestos can result in other benign conditions such as pleural fibrosis (thickening of the lining of the lungs), pleural plaques or skin warts.

Non-occupational exposure

Asbestos specific diseases are almost always a result of occupational exposure to asbestos. Non occupational exposures resulting in disease have been seen in spouses or other family members living with an asbestos worker, or those who have lived in the neighbourhood of asbestos plants.

Asbestos fibres are naturally occurring and result in a natural background present in our environment. This, combined with the widespread use of asbestos in products such as automotive brake linings, means that we are all exposed to very small amounts of asbestos in our daily lives. It is not this very low level of exposure that results in asbestos disease but the higher levels of occupational exposure that are of concern to most authorities. Studies have not shown any evidence of asbestos specific diseases in individuals who breathe asbestos in the outdoor air or who inhale asbestos as occupants of asbestos containing buildings. Regardless, proper measures for preventing or minimizing exposure to asbestos must always be in place.

Respirators

Control respiratory hazards

To control the airborne asbestos respiratory hazard to persons working with or in close proximity to asbestos is prescribed by Ontario Regulation 278/05 designated substance - Asbestos on construction projects and in buildings and repair operations:

All workers required to wear air purifying respirators are required to follow UWaterloo's respiratory protection program.

Respiratory protection program

Intent

This program applies to anyone who is required to use a respirator to protect themselves from any known or potential respiratory hazards. 

This document is not intended to address the selection of respirators for use against:

  1. Infectious agents
  2. Nuclear biological chemical (NBC) agents

The University of Waterloo’s respiratory protection program is to ensure that employees are protected from inhalation of hazardous substances such as, but not limited to:

  1. Dusts
  2. Fumes
  3. Fogs
  4. Mists
  5. Fibres
  6. Gases
  7. Vapours

When engineering or administrative control measures are not practical, adequate or feasible, while such controls are being instituted, or during shutdown for maintenance, repair or emergency.

Roles and responsibilities

University of Waterloo Safety Office
  1. Annual review of respiratory protection program
  2. Establishing & maintaining health surveillance
  3. Record keeping
  4. Perform hazard assessments
  5. Training and annual renewal of certification of respirator users
Departments
  1. Ensure that health screening, fit testing, and training are completed prior to assigning a user any task that requires use of a respirator.
  2. Ensure that respirators are maintained according to UWaterloo respirator use guidelines and manufacturer instructions.
  3. Ensure that respirators are used in accordance with training and written instructions.
  4. Provide details of the anticipated working conditions to the Occupational Health Nurse at Health Services for conducting medical assessment of the respirator user.
  5. Notify Safety Office of user’s concerns or any changes that may have an impact on the environmental conditions.
  6. Notify the Safety Office of investigation reports that reveal that the use of a respirator may have prevented or contributed to an accident or injury.
Employee
  1. Ensure that respirators are used in accordance with training and written instructions.
  2. Remove from service any respirator that they deem to be defective and report it to their immediate supervisor or other responsible person.
  3. Report to their supervisor or Occupational Health Nurse any condition or change may have an impact on their ability to use a respirator safely.

Program elements

Fit testing
  1. Prior to fit testing the user shall complete a health surveillance evaluation; all results off the health surveillance evaluation will be kept confidential.
  2. The user shall wear all applicable personal protection equipment during the fit test (e.g. hearing, head, and eye protection) if it is required to perform their duties.
  3. Fit testing shall be conducted annually.
  4. Fit testing shall occur whenever there is a change in the respirator (e.g., brand, model, or size).
  5. Whenever changes to the user’s physical condition could affect the respirator fit.
  6. No user shall use a tight-fitting respirator until a satisfactory fit test is achieved.
  7. The person undergoing fit testing shall be clean-shaven.
  8. Fit testing at UWaterloo shall be done according to CSA Z94.4-02 B2.4 irritant smoke QLFT protocol.
Training

All employees that are required to wear a respirator, and supervisors that require their employees to wear a respirator, must undergo training to be considered a competent respirator user. Employee training includes:

  1. Roles and responsibilities of the user and maintenance
  2. Medical assessment process
  3. Fit testing
  4. General knowledge
  5. Care and practical use
  6. Limitations and
  7. Repair and maintenance
Respirator use
  1. Prior to any employee using a respirator they shall complete all health screening, fit-testing and training requirements required by UWaterloo.
  2. Respirators requiring a tight face-to-face piece seal shall not be used when the seal cannot be maintained due to hair, clothing, straps, jewellery, eyeglasses, or any other form of interference.
  3. Other personal protective equipment (hearing protection, head protection, etc.) shall not interfere with face-to-face piece seal.
  4. User seal checks shall be performed immediately after donning tight-fitting respirators and periodically during use.
  5. Respirators that have an electrical power supply shall be intrinsically safe.
  6. Buddy breathing is not permitted.
  7. Special precautions must be taken when working in high- and low-temperature environments.
  8. Air-purifying respirators shall not be used in IDLH situations.
Care and maintenance

All respirators must be kept clean & free from dirt. Single use respirators must be disposed of after use.

  1. Cleaning and sanitizing:
    1. Respirators used on a frequent basis by a single user must be cleaned & sanitized monthly. Respirators used on an infrequent basis or shared with other employees must be cleaned and sanitized after every use. Cleaning & sanitizing shall consist of:
      1. Complete disassembly of respirator
      2. Washing all parts (except for cartridge or filter elements) in warm water using a mild detergent, such as dish soap. A soft bristle brush (not wire) may be used to remove dirt
      3. Rinse all parts (except for cartridge or filter elements) in warm water
      4. Soak all parts (except for cartridge or filter elements) in disinfectant solution for 2 min
      5. Thoroughly rinse off all disinfected parts before re-assembly
      6. Dry all parts with a soft lint-free cloth or allow to air dry in a dust free environment and
      7. Reassemble respirator and store properly. In the case of shared respirators the sanitization sticker shall be filled out, including name of employee and date. The respirator shall then be placed into a clean bag and sealed with the sanitized sticker and returned to the respirator station.
    2. During cleaning inspect all parts thoroughly for wear and damage
  2. Users shall inspect the respirator before and after each use for the following:
    1. Condition of component parts, e.g. face piece, valves, connecting tubes, filters, cartridges, harness assemblies, etc.
    2. Tightness of connections
    3. End-of-service-life indicator if present, or date stamps
    4. Proper functioning of regulators, alarms and other warning systems
  3. If the respirator fails inspection it shall be tagged and removed from service until repaired by a qualified person or replaced.
  4. Respirator storage:
    1. Store respirators such that they are protected from dust, ozone, sunlight, heat, extreme cold, moisture, vermin, chemicals, oils, greases, or any other potentially harmful situation
    2. Store respirators in a manner that will not cause deformation of rubber or other elastomeric parts
    3. Emergency- and rescue-use respirators must be stored in clearly marked, readily accessible locations at all times and must also be stored as stated in sections 4.a & 4.b above
  5. Emergency-use SCBA inspection requirements:
    1. Emergency-use SCBA shall be inspected every 3 months
    2. Inspection records must be maintained for SCBA which include the following:
      1. Date of use of the cylinder and respirator
      2. Date of inspection
      3. Physical condition of respirator and cylinder
      4. Cleaning and sanitizing of respirators
      5. Repairs done to respirators and cylinders and
      6. Tests performed on respirators and cylinders or remedial actions taken
    3. SCBA air cylinders that have not been used in any 12 month period shall be slowly depressurized then refilled
    4. Pressure gauges of all breathing gas cylinders shall read in the “full” range, cylinders with gauges that do not read in the “full” range shall be recharged
Health surveillance
  1. Respirator users must complete a screening form prior to using a respirator for the first time and every two years thereafter:
    1. The screening form shall be submitted to the occupational health nurse for evaluation. The occupational health nurse will determine if a Doctor’s opinion is necessary
    2. All health information will be kept confidential and in the care of the occupational health nurse
    3. Health professionals will indicate whether the user meets the medical requirements, meets the medical requirements with limitations or does not meet the medical requirements
      1. If the user meets the requirements with limitations, these limitations must be stated in the written opinion
References

CSA Z94.4-02 – care, use and selection of respirators.

Below are the minimum requirements for respiratory protection used during type I and type II asbestos work.

Respirator selection

Type 1 operations Respirator
Worker requests that the employer provide a respirator to be used by the worker Air purifying half-mask respirator with N-100, R-100 or P-100 particulate filter
Type 2 operations Respirator
  1. Removal of false ceiling to gain access to work area if asbestos containing material is likely to have fallen on surface of false ceiling.
  2. Breaking, cutting, drilling, abrading, grinding, sanding or vibrating non-friable material containing asbestos that has not been wetted using power tools attached to a dust collecting device equipped with a HEPA filter.
Air purifying full-face piece respirator with N-100, R-100 or P-100 particulate filter
  1. The removal or disturbance of one square metre or less of friable asbestos containing material.
  2. Enclosing friable asbestos containing material.
  3. Applying tape or a sealant or other covering to pipe or boiler insulation that is asbestos containing material.
  4. Installing or removing ceiling tiles that are asbestos containing material, if the tiles cover an area of 7.5 square metres or more and are installed or removed without being broken, cut, drilled, abraded, ground, sanded or vibrated.
  5. Breaking, cutting, drilling, abrading, grinding, sanding or vibrating non-friable asbestos containing material if:
    • i. The material is not wetted to control the spread of dust or fibres
    • ii. The work is done only by means of non-powered hand-held tools
  6. Removing one square metre or more of drywall in which joint filling compounds that are asbestos containing material have been used.
  7. Removing insulation that is asbestos containing material from a pipe, duct or similar structure using a glove bag.
Air purifying half-mask respirator with N-100, R-100 or P-100 particulate filter

Use and care of HEPA vacuum

Training

All persons using the HEPA vacuum must receive training.

Video on use of Hako Minuteman vacuum

Preparation

  1. Release both clips and remove electric head. Remove wire metal frame and permanent cloth filter and paper filter protector (white).
  2. Fully expand disposable filter bag (blue).
  3. Place a disposable paper filter bag into a small plastic asbestos waste bag (yellow).
  4. Tuck one side of the plastic asbestos waste bag under the orange intake pipe and pull up snugly.
  5. Slide the opening (with rubber seal) of the disposable filter bag onto the orange inlet pipe. Make sure that the seal is pushed past the raised ring-shaped part of the orange inlet pipe. Do not puncture bag.
  6. Place paper filter protector into canister with elastic neck over tank rim.
  7. Insert permanent cloth filter into the disposable filter protector and snug the cloth filter to the tank rim.
  8. Place circular wire metal frame inside the cloth filter with the ring side down at the bottom of the filter.
  9. Place electric vacuum head on tank with electric cord facing midway towards the handle. Make sure that the head is snug on the tank rim. Lock the two latches to secure the head to the tank.
  10. Remove the safety caps from hose.
  11. Loosen black knob on hose connector and remove safety cap . Push the hose all the way into the connector. Turn black knob to secure hose.
  12. Check vacuum performance by blocking inlet.

Cleaning and storage

  1. When finished with work, carefully vacuum the exterior of the vacuum cleaner including canister, wheels, outside of hose, respirator, disposable clothing shoes, etc. (at work site).
  2. Shut off vacuum cleaner.
  3. While continuing to wear the asbestos respirator and TYVEK suit, disconnect the attachment and the hose from the canister.
  4. Place safety caps on each end of hose and vacuum inlet.
  5. Release both clips and remove electric head.
  6. Remove wire metal frame and permanent cloth filter.
  7. Remove filter protector. Do not discard, the filter protector is to be replaced after five uses.
  8. Take the asbestos waste plastic bag and hold it tight around the orange intake pipe.
  9. Slide the asbestos waste plastic bag downward and remove it carefully along with the disposable filter bag. Seal asbestos waste plastic bag and place into a plastic garbage bag.
  10. Wipe interior of vacuum cleaner with a damp cloth or paper towel. Place cloth and any contaminated materials into plastic garbage bag and seal.

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Asbestos inventory

Inventory

  1. Plant Operations design section maintains a list of locations of all areas with asbestos containing material.
  2. The list of locations of asbestos containing material is recorded available by contacting Plant Operations design section (ext. 36897).
  3. The list of locations will be updated annually or when the University becomes aware of new information related to the location of asbestos containing material. The locations of friable asbestos containing material will be inspected at a reasonable interval (five year schedule) and the condition of asbestos recorded.
  4. Discovery of suspected asbestos: Workers are to notify their supervisors if they become aware of asbestos containing material not listed in the inventory. The supervisor shall notify Plant Operations design section Rob Hartung (ext. 36897).
  5. Upon removal of asbestos containing material, notify Plant Operations design section (ext. 36897) who will update the inventory.

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Classification of asbestos work

Asbestos work is classified according to the potential for exposing workers and occupants to asbestos fibres.

The three class of asbestos work in increasing order of risk are:

Type I asbestos work

Classification of type I asbestos work

The following are examples of type I asbestos work: (contact Safety Office ext. 33587 with questions regarding classification of Asbestos removal procedures).

  1. Installing or removing non-friable asbestos-containing material, other than ceiling tiles, if the material is installed or removed without being broken, cut, drilled, abraded, ground, sanded or vibrated.
  2. Breaking, cutting, drilling, abrading, grinding, sanding or vibrating non-friable asbestos-containing material if:
    • The material is wetted to control the spread of dust or fibres
    • The work is done only by means of non-powered hand-held tools.
  3. Removing less than one square metre of drywall in which joint-filling compounds that are asbestos-containing material have been used.
  4. Installing or removing ceiling tiles that are asbestos-containing material, if the tiles cover an area less than 7.5 square metres and are installed or removed without being broken, cut, drilled, abraded, ground, sanded or vibrated. Removing a few tiles per room to lay cable is considered Type I asbestos work (See letter from MOL (PDF)).

Type II asbestos work

Classification of type II asbestos work

The following are examples of type II asbestos work. Contact Safety Office ext. 33587 with questions regarding classification of asbestos removal procedures:

  1. Removing all or part of a false ceiling to obtain access to a work area, if asbestos-containing material is likely to be lying on the surface of the false ceiling.
  2. The removal or disturbance of one square metre or less of friable asbestos-containing material.
  3. Enclosing friable asbestos-containing material.
  4. Applying tape or a sealant or other covering to pipe or boiler insulation that is asbestos-containing material.
  5. Installing or removing ceiling tiles that are asbestos-containing material, if the tiles cover an area of 7.5 square metres or more and are installed or removed without being broken, cut, drilled, abraded, ground, sanded or vibrated.
  6. Breaking, cutting, drilling, abrading, grinding, sanding or vibrating non-friable asbestos-containing material if:
    • The material is not wetted to control the spread of dust or fibres, and
    • The work is done only by means of powered hand-held tools
  7. Removing one square metre or more of drywall in which joint filling compounds that are asbestos-containing material have been used.
  8. Breaking, cutting, drilling, abrading, grinding, sanding or vibrating non-friable asbestos-containing material if the work is done by means of power tools that are attached to dust-collecting devices equipped with HEPA filters (was type I).
  9. Cleaning or removing filters used in air handling equipment in a building that has sprayed fireproofing that is asbestos-containing material.
  10. Removing insulation that is asbestos-containing material from a pipe, duct or similar structure using a glove bag (must be less than 1 square metre).

Type III asbestos work

Classification of type III asbestos work

  1. An operation not classified as type I or II and may expose the worker to asbestos.
  2. Removal of more than one square metre of friable asbestos containing material.
  3. Spray applications of sealant to friable asbestos containing material.
  4. Cleaning or removal of air-handling equipment in a building that has sprayed fireproofing containing asbestos
  5. Repair, alteration or demolition of a kiln or furnace made in part, of asbestos-containing refractory materials.
  6. Cutting, grinding or abrading an asbestos product with a power tool not equipped with a dust collection device and HEPA filter.

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Asbestos work procedures

Asbestos work procedures have been developed to minimize exposure to asbestos. These procedures were reviewed by the UWaterloo Joint Health and Safety Committee.

Type I work procedures

Notification of type I work

Notify organizational unit affected by the work (department or faculty).

Equipment

The following equipment must be available:

  1. Asbestos warning signs
  2.  HEPA vacuum
  3. Personal Protective Equipment: (if requested by worker)
  • Air purifying half-mask respirator with N-100, R-100 or P-100 particulate filter 
  • Tyvex suit (or equivalent) with hood
  • Eye protection
  • Rubber gloves

General work procedures type I

  1. No eating, drinking, smoking or chewing in work area.
  2. If a worker requests a respirator, they will be issued with a respirator that is:
    • Air purifying half-mask respirator with N-100, R-100 or P-100 particulate filter
    • The worker shall wear and use the respirator.
  3. If the worker requests protective clothing, they will be issued protective clothing. The protective clothing will consist of:
    • Air purifying half-mask respirator with N-100, R-100 or P-100 particulate filter 
    • Tyvek suit (or equivalent) with hood
    • Eye protection
    • Rubber gloves
  4. Cover furniture and carpet with 6.0-mil poly sheeting if work will spread dust.
  5. Remove visible dust using HEPA vacuum or wet cloth.
  6. Asbestos products are wetted with water containing a wetting agent where practical.
  7. Clean work area with soap and water (damp mopping or wet sweeping) or a HEPA vacuum.
  8. Dust control 6.0 mil poly sheeting and protective clothing are to be wetted and disposed of as asbestos waste.

Type II asbestos work procedures

Notification of type II work

Notify the organizational unit affected by the work (department or faculty).

Standard operating procedures for specific types of work

Type II asbestos work: Ceiling access where asbestos-containing material is likely to be lying on the surface of the ceiling

Application

Procedure for removal of all or part of a false ceiling to obtain access to a work area, where asbestos-containing material is likely to be lying on the surface of the false ceiling. This operation may disturb such material generating enough airborne asbestos to be classified as a type 2 operation.

Personal protection
Protective clothing

Full body disposable clothing including suitable footwear and head covering. The covering must fit snugly at the ankles, wrists and neck in order to prevent asbestos fibres from reaching the garments and skin under the protective clothing and made of material that does not readily retain nor permit penetration of asbestos fibres.

Respiratory protection

Air purifying half-mask respirator equipped with N-100, R-100 or P-100 particulate filter.

Materials and equipment
HEPA vacuum

Vacuum cleaner equipped with a high efficiency particulate aerosol filter, fitted with appropriate tools. The vacuum equipment shall have a filtering system that is at least 99.97% efficient in collecting a 0.3 micrometre aerosol.

Drop sheets

Polyethylene sheeting of 6 mil. thickness to control the generation of secondary dust.

Amended water

Water with wetting agent added for the purpose of reducing surface tension to allow thorough wetting of the asbestos-containing material (2 teaspoons dishwasher detergent to 1 gallon water).

Sprayer

Garden reservoir type, low velocity, capable of producing mist or fine spray.

Small tools

Sponge(s), cloth(s), adjustable knife, flashlight, ladder, etc.

Supplies
  • Reinforced duct tape or double-sided tape suitable for sealing polyethylene bags
  • and/or sealing polyethylene to all surfaces to be covered.
  • Asbestos waste containers/bag
Signage

Warning of asbestos hazard at the entrance to the work area and that entry into the area is restricted to authorized personnel only (see sample below).

D A N G E R
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA

Work practices
General
  • No eating or drinking is allowed in contaminated work areas.
  • Compressed air is not be used to clean up and remove dust from any surface.
  • Facilities for washing hands and face (washroom) shall be available to all workers and shall be used by every worker after leaving asbestos work areas.
Preparation of work area
  1. Post signs warning of asbestos hazard on mechanical room doors (see signage).
  2. Clear immediate work areas of all moveable furnishings or equipment. Any furnishings or equipment not removed shall be adequately covered and sealed using 6 mil. polyethylene and tape.
  3. Provide a temporary enclosure to prevent the spread of airborne dust from the work area. Use a prefabricated enclosure or erect an enclosure of 6 mil. polyethylene plastic sheeting such that the proposed asbestos work is entirely within the enclosure; either erect temporary framing to support polyethylene, or clip and tape polyethylene to ceiling system. If the work area is not enclosed by walls and the enclosure is opaque, provide transparent window areas to allow observation of the entire work area from outside the enclosure. Secure rip-proof polyethylene sheeting (12 mil.) to the existing floor; for work on rough floor surfaces, provide a sub-flooring of plywood. The enclosure shall be as airtight as conditions permit including the provision of a double overlapping flap at the entrance.
  4. Shut down all mechanical ventilation to and from the local work area. As appropriate, seal and tape all ventilation ducts to and from the local work area with double polyethylene plastic sheeting.
  5. Position the HEPA vacuum body outside the enclosure. Position the vacuum hose within the enclosure to provide a slight negative pressure effect in the enclosure during the use of the HEPA vacuum.
  6. Wear respiratory protection and protective clothing as described in Personal Protection -“respiratory protection” and “protective clothing”.
Work procedure
  1. Enter the enclosure with all the equipment/tools necessary to complete the task(s).
  2. Carefully raise the edge of the access tile and slide it over an adjacent tile.
  3. Enter the ceiling space up to waist level (if possible).
  4. Thoroughly HEPA vacuum the top of the access tile, and also clean up any fallen material on surfaces adjacent to the access tile (within arms reach) including, for example, adjacent ceiling tiles, light fixtures, ducts, T-bar, etc.
  5. When work in the ceiling space is completed, carefully replace the access tile after vacuuming its lower surface.
  6. HEPA vacuum and/or damp wipe all surfaces inside the enclosure. Double bag all waste and HEPA vacuum and/or damp-wipe the second container immediately prior to passing the container out of the enclosure. Clean all reusable tools/equipment and pass them out of the enclosure.
  7. Spray interior walls and floor of enclosure with amended water to keep damp during tear-down. All polyethylene, adhesive tape and cleaning cloths shall be carefully rolled together and bagged as asbestos waste. Dispose of protective clothing as asbestos waste.
  8. Decontaminate protective clothing/respirators:
    • Thoroughly HEPA vacuum and/or damp-wipe all exposed skin, protective clothing and respirator
    • Remove decontaminated protective clothing. Protective clothing may be reused throughout a day. Dispose of protective clothing after each shift
    • Leave the work area in street clothes and proceed to the nearest washroom to wash exposed skin and respirator with soap and water
    • Before washing the respirator, remove the filters; cover the inlet side of the filters with tape (for storage and reuse) or dispose of the filters as asbestos waste

Type II asbestos work: Clean-up of friable asbestos-containing material (debris)

Application

These procedures apply to the HEPA vacuuming of fallen asbestos-containing material, particularly on floor areas in mechanical rooms, pipe and duct spaces. This operation may generate enough airborne asbestos to be classified as a Type 2 operation.

Personal protection

Protective clothing

Full body disposable clothing including suitable footwear and head covering. The covering must fit snugly at the ankles, wrists and neck in order to prevent asbestos fibres from reaching the garments and skin under the protective clothing and made of material that does not readily retain nor permit penetration of asbestos fibres.

Respiratory protection

Air purifying half-mask respirator equipped with N-100, R-100 or P-100 particulate filter.

Materials and equipment

HEPA vacuum

Vacuum cleaner equipped with a high efficiency particulate aerosol filter, fitted with appropriate tools. The vacuum equipment shall have a filtering system that is at least 99.97% efficient in collecting a 0.3 micrometre aerosol.

Drop sheets

Polyethylene sheeting of 6 mil. thickness to control the generation of secondary dust.

Amended water

Water with wetting agent added for the purpose of reducing surface tension to allow thorough wetting of the asbestos-containing material (2 teaspoons dishwasher detergent to 1 gallon water).

Sprayer

Garden reservoir type, low velocity, capable of producing mist or fine spray.

Small tools

Sponge(s), cloth(s), adjustable knife, flashlight, ladder, etc.

Supplies
  • Reinforced duct tape or double-sided tape suitable for sealing polyethylene bags
  • And/or sealing polyethylene to all surfaces to be covered.
  • Asbestos waste containers/bag
Signage

Warning of asbestos hazard at the entrance to the work area and that entry into the area is restricted to authorized personnel only (see sample below).

D A N G E R
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA

Work practices

General
  • No eating or drinking is allowed in contaminated work areas.
  • Compressed air is not be used to clean up and remove dust from any surface.
  • Facilities for washing hands and face (washroom) shall be available to all workers and shall be used by every worker after leaving asbestos work areas.
Preparation of work area
  1. If the work area is not enclosed by walls, erect tape barriers to keep all non-protected personnel at least 20 - 30 feet away. Post signs warning of asbestos hazard at the tape barrier, or where the work area is enclosed by walls, on all closed entrances to the work area.
  2. An enclosure is not necessary for this activity. Where practical, a drop-sheet below the work is required; if possible, extend the drop-sheet at least 3 feet beyond line of work.
  3. Clear immediate work areas of all moveable furnishings or equipment. Any furnishings or equipment not removed shall be adequately covered and sealed using 6 mil. polyethylene and tape.
  4. Shut down all mechanical ventilation to and from the local work area. As appropriate, seal and tape all ventilation ducts to and from the local work area with double polyethylene plastic sheeting.
  5. Wear respiratory protection and protective clothing as described in personal protection - "respiratory protection” and “protective clothing”.
Work procedure
  1. Carefully and thoroughly HEPA vacuum any fallen friable asbestos-containing material on the floor or horizontal runs of pipes or ducts within the room.
  2. At completion of work, HEPA vacuum and/or damp wipe the drop-sheet (if used) and reusable tools/equipment.
  3. Place drop-sheets (if used), adhesive tape, cleaning cloths, etc. in Asbestos Waste Bag, seal with tape. Place in second Asbestos Waste Bag, HEPA vacuum and/or damp-wipe the exterior.
  4. While wearing your respirator:
    • Thoroughly HEPA vacuum and/or damp-wipe all exposed skin, protective clothing and respirator
    • Remove decontaminated protective clothing. Protective clothing may be reused throughout a day. Dispose of protective clothing after each shift as non-asbestos waste
    • Remove respirator
    • Leave the work area in street clothes and proceed to the nearest washroom to wash exposed skin and respirator with soap and water
  5. Restart mechanical ventilation supply and exhaust.

Type II asbestos work: Disturbance of one square meter or less friable asbestos-containing material

Application

These procedures apply to work performed in the vicinity of asbestos-containing sprayed fireproofing, thermal insulation or plaster where there is the potential for disturbance of 1 m2 or less of this material, but it does not include activities which specifically involve the removal of asbestos-containing material. This disturbance may generate enough airborne asbestos to be classified as a Type 2 operation.

Personal protection

Protective clothing

Full body disposable clothing including suitable footwear and head covering. The covering must fit snugly at the ankles, wrists and neck in order to prevent asbestos fibres from reaching the garments and skin under the protective clothing and made of material that does not readily retain nor permit penetration of asbestos fibres.

Respiratory protection

Air purifying half-mask respirator equipped with N-100, R-100 or P-100 particulate filter.

Materials and equipment

HEPA vacuum

Vacuum cleaner equipped with a high efficiency particulate aerosol filter, fitted with appropriate tools. The vacuum equipment shall have a filtering system that is at least 99.97% efficient in collecting a 0.3 micrometre aerosol.

Drop sheets

Polyethylene sheeting of 6 mil. thickness to control the generation of secondary dust.

Amended water

Water with wetting agent added for the purpose of reducing surface tension to allow thorough wetting of the asbestos-containing material (2 teaspoons dishwasher detergent to 1 gallon water).

Sprayer

Garden reservoir type, low velocity, capable of producing mist or fine spray.

Small tools

Sponge(s),cloth(s), adjustable knife, flashlight, ladder,etc.

Supplies
  • Reinforced duct tape or double-sided tape suitable for sealing polyethylene bags
  • and/or sealing polyethylene to all surfaces to be covered.
  • Asbestos waste containers/bag
Signage

Warning of asbestos hazard at the entrance to the work area and that entry into the area is restricted to authorized personnel only (see sample below).

D A N G E R
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA

Work practices

General
  • No eating or drinking is allowed in contaminated work areas.
  • Compressed air is not be used to clean up and remove dust from any surface.
  • Facilities for washing hands and face (washroom) shall be available to all workers and shall be used by every worker after leaving asbestos work areas.
Preparation of work area
  1. Post signs warning of asbestos hazard on mechanical room door(s) (see signage).
  2. Clear immediate work areas of all moveable furnishings or equipment. Any furnishings or equipment not removed shall be adequately covered and sealed using 6 mil. polyethylene and tape.
  3. Provide a temporary enclosure to prevent the spread of airborne dust from the work area. Use a prefabricated enclosure or erect an enclosure of 6 mil. polyethylene plastic sheeting such that the proposed asbestos work is entirely within the enclosure; either erect temporary framing to support polyethylene, or clip and tape polyethylene to ceiling system. If the work area is not enclosed by walls and the enclosure is opaque, provide transparent window areas to allow observation of the entire work area from outside the enclosure. Secure rip-proof polyethylene sheeting (12 mil.) to the existing floor; for work on rough floor surfaces, provide a sub-flooring of plywood. The enclosure shall be as airtight as conditions permit including the provision of a double overlapping flap at the entrance.
  4. Shut down all mechanical ventilation to and from the local work area. As appropriate, seal and tape all ventilation ducts to and from the local work area with double polyethylene plastic sheeting.
  5. Position the HEPA vacuum body outside the enclosure. Position the vacuum hose within the enclosure to provide a slight negative pressure effect in the enclosure during the use of the HEPA vacuum.
  6. Wear respiratory protection and protective clothing as described in personal protection -- “respiratory protection” and “protective clothing”.
Work procedure
  1. Enter the enclosure with all the equipment/tools necessary to complete the task(s).
  2. Use amended water to thoroughly wet any friable asbestos containing material that may be disturbed during the work.
  3. Carefully conduct the non-asbestos work activity in a manner which minimizes the potential for disturbance of the asbestos-containing material in the immediate vicinity.
  4. Frequently and at regular intervals during the doing of work and immediately upon completion of the work, remove dust and waste from the workplace by HEPA vacuuming or damp-wiping.
  5. HEPA vacuum and/or damp wipe all surfaces inside the enclosure. Double bag all waste and HEPA vacuum and/or damp-wipe the second container immediately prior to passing the container out of the enclosure. Clean all reusable tools/equipment and pass them out of the enclosure.
  6. Spray interior walls and floor of enclosure with amended water to keep damp during tear-down. All polyethylene, adhesive tape and cleaning cloths shall be carefully rolled together and bagged as asbestos waste. Dispose of protective clothing as asbestos waste.
  7. Decontaminate protective clothing/respirators:
    • Thoroughly HEPA vacuum and/or damp-wipe all exposed skin, protective clothing and respirator
    • Remove decontaminated protective clothing. Protective clothing may be reused throughout a day. Dispose of protective clothing after each shift
    • Leave the work area in street clothes and proceed to the nearest washroom to wash exposed skin and respirator with soap and water
    • Before washing the respirator, remove the filters; cover the inlet side of the filters with tape (for storage and reuse) or dispose of the filters as asbestos waste

Type II asbestos work: Removal of one square metre or less of friable asbestos-containing material

Application

These procedures apply to work involving the removal of 1 square meter or less of friable asbestos-containing material; classification is based according to total area on which work is done consecutively in a room or enclosed area, even if the work is divided into smaller jobs This activity may generate enough airborne asbestos to be classified as a Type 2 operation.

Personal protection

Protective clothing

Full body disposable clothing including suitable footwear and head covering. The covering must fit snugly at the ankles, wrists and neck in order to prevent asbestos fibres from reaching the garments and skin under the protective clothing and made of material that does not readily retain nor permit penetration of asbestos fibres.

Respiratory protection

Air purifying half-mask respirator equipped with N-100, R-100 or P-100 particulate filter.

Materials and equipment

HEPA vacuum

Vacuum cleaner equipped with a high efficiency particulate aerosol filter, fitted with appropriate tools. The vacuum equipment shall have a filtering system that is at least 99.97% efficient in collecting a 0.3 micrometre aerosol.

Drop sheets

Polyethylene sheeting of 6 mil. thickness to control the generation of secondary dust.

Amended water

Water with wetting agent added for the purpose of reducing surface tension to allow thorough wetting of the asbestos-containing material (2 teaspoons dishwasher detergent to 1 gallon water).

Sprayer

Garden reservoir type, low velocity, capable of producing mist or fine spray.

Small tools

Sponge(s),cloth(s), adjustable knife, flashlight, ladder,etc.

Supplies
  • Reinforced duct tape or double-sided tape suitable for sealing polyethylene bags
  • And/or sealing polyethylene to all surfaces to be covered
  • Asbestos waste containers/bag
Signage

Warning of asbestos hazard at the entrance to the work area and that entry into the area is restricted to authorized personnel only (see sample below).

D A N G E R
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA

Work practices

General
  • No eating or drinking is allowed in contaminated work areas.
  • Compressed air is not be used to clean up and remove dust from any surface.
  • Facilities for washing hands and face (washroom) shall be available to all workers and shall be used by every worker after leaving asbestos work areas.
Preparation of work area
  1. Post signs warning of asbestos hazard on mechanical room door(s) (see signage).
  2. Remove any friable material containing asbestos and any visible dust that is likely to be disturbed and that is lying on any surface in the vicinity of the work area by HEPA vacuuming or damp wiping.
  3. Clear immediate work areas of all moveable furnishings or equipment. Any furnishings or equipment not removed shall be adequately covered and sealed using 6 mil. polyethylene and tape.
  4. Provide a temporary enclosure to prevent the spread of airborne dust from the work area. Use a prefabricated enclosure or erect an enclosure of 6 mil. polyethylene plastic sheeting such that the proposed asbestos work is entirely within the enclosure; either erect temporary framing to support polyethylene, or clip and tape polyethylene to ceiling system. If the work area is not enclosed by walls and the enclosure is opaque, provide transparent window areas to allow observation of the entire work area from outside the enclosure. Secure rip-proof polyethylene sheeting (12 mil.) to the existing floor; for work on rough floor surfaces, provide a sub-flooring of plywood. The enclosure shall be as airtight as conditions permit including the provision of a double overlapping flap at the entrance.
  5. Shut down all mechanical ventilation to and from the local work area. As appropriate, seal and tape all ventilation ducts to and from the local work area with double polyethylene plastic sheeting.
  6. Position the HEPA vacuum body outside the enclosure. Position the vacuum hose within the enclosure to provide a slight negative pressure effect in the enclosure during the use of the HEPA vacuum.
  7. Wear respiratory protection and protective clothing as described in personal protection - “respiratory protection” and “protective clothing”.
Work procedure
  1. Enter the enclosure with all the equipment/tools necessary to complete the task(s).
  2. Use amended water to thoroughly wet any friable asbestos containing material to be removed.
  3. Remove the asbestos-containing material as required and place directly into asbestos waste containers. Double bag all waste and HEPA vacuum and/or damp-wipe the second container immediately prior to passing it out of the enclosure.
  4. Use bristle brushes, amended water and sponges to further clean metal piping or sections of structural members from which asbestos-containing material was removed.
  5. Seal the surfaces from which asbestos-containing material has been removed with encapsulant (sealer). Seal all exposed ends of pipe insulation with sealer or lagging cement.
  6. Frequently and at regular intervals during the doing of work and immediately upon completion of the work, remove dust and waste from the workplace by HEPA vacuuming or damp-wiping.
  7. HEPA vacuum and/or damp wipe all surfaces inside the enclosure. Double bag all waste and HEPA vacuum and/or damp-wipe the second container immediately prior to passing the container out of the enclosure. Clean all reusable tools/equipment and pass them out of the enclosure.
  8. Spray interior walls and floor of enclosure with amended water to keep damp during tear-down. All polyethylene, adhesive tape and cleaning cloths shall be carefully rolled together and bagged as asbestos waste. Dispose of protective clothing as asbestos waste.
  9. Decontaminate protective clothing/respirators:
    • Thoroughly HEPA vacuum and/or damp-wipe all exposed skin, protective clothing and respirator
    • Remove decontaminated protective clothing. Protective clothing may be reused throughout a day. Dispose of protective clothing after each shift
    • Leave the work area in street clothes and proceed to the nearest washroom to wash exposed skin and respirator with soap and water
    • Before washing the respirator, remove the filters; cover the inlet side of the filters with tape (for storage and reuse) or dispose of the filters as asbestos waste
Notification

Notify Plant Operations design section Rob Hartung (ext. 36897) to have the inventory updated.

Type II asbestos work: Glove bag asebestos removal

Application

These procedures apply to work involving the removal of 1 square meter or less of friable asbestos-containing material; classification is based according to total area on which work is done consecutively in a room or enclosed area, even if the work is divided into smaller jobs This activity may generate enough airborne asbestos to be classified as a Type 2 operation.

Personal protection

Protective clothing

Full body disposable clothing including suitable footwear and head covering. The covering must fit snugly at the ankles, wrists and neck in order to prevent asbestos fibres from reaching the garments and skin under the protective clothing and made of material that does not readily retain nor permit penetration of asbestos fibres.

Respiratory protection

Air purifying half-mask respirator equipped with N-100, R-100 or P-100 particulate filter.

Materials and equipment

HEPA vacuum

Vacuum cleaner equipped with a high efficiency particulate aerosol filter, fitted with appropriate tools. The vacuum equipment shall have a filtering system that is at least 99.97% efficient in collecting a 0.3 micrometre aerosol.

Glove bags

The glove bag shall be made of material that is impervious to asbestos and sufficiently strong to support the weight of material the bag will hold.
The glove bag shall be equipped with:

  • Sleeves and gloves that are permanently sealed to the body of the bag to allow the worker to access and deal with the insulation and maintain a sealed enclosure throughout the work period
  • Valves or openings to allow insertion of a vacuum hose and the nozzle of a water sprayer while maintaining the seal to the pipe, duct or similar structure
  • A tool pouch with a drain
  • A seamless bottom and a means of sealing off the lower portion of the bag
  • A high strength double throw zipper and removable straps, if the bag is to be moved during the removal operation
Amended water

Water with wetting agent added for the purpose of reducing surface tension to allow thorough wetting of the asbestos-containing material (2 teaspoons dishwasher detergent to 1 gallon water).

Sprayer

Garden reservoir type, low velocity, capable of producing mist or fine spray.

Small tools

Sponge(s), cloth(s), adjustable knife, flashlight, ladder,etc.

Supplies
  • Reinforced duct tape or double-sided tape suitable for sealing polyethylene bags
  • and/or sealing polyethylene to all surfaces to be covered
  • Asbestos waste containers/bag
Signage

Warning of asbestos hazard at the entrance to the work area and that entry into the area is restricted to authorized personnel only (see sample below).

D A N G E R
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA

Work practices

General
  • No eating or drinking is allowed in contaminated work areas.
  • Compressed air is not be used to clean up and remove dust from any surface.
  • Facilities for washing hands and face (washroom) shall be available to all workers and shall be used by every worker after leaving asbestos work areas.
Preparation of work areas
  1. Post signs warning of asbestos hazard on mechanical room door(s) (see signage).
  2. Remove any friable material containing asbestos and any visible dust that is likely to be disturbed and that is lying on any surface in the vicinity of the work area by HEPA vacuuming or damp wiping.
  3. Clear immediate work areas of all moveable furnishings or equipment. Any furnishings or equipment not removed shall be adequately covered and sealed using 6 mil. polyethylene and tape.
  4. Position the HEPA vacuum body outside the enclosure. Position the vacuum hose within the enclosure to provide a slight negative pressure effect in the enclosure during the use of the HEPA vacuum.
  5. Wear respiratory protection and protective clothing as described in personal protection - “respiratory protection” and “protective clothing”.
Procedure

Type II removals using glove bags must be restricted to an area less than one square metre. (You may not remove 3 square meters on a pipe by separating the job into three section.)

  1. Any existing disturbed asbestos is to be cleaned up with a HEPA vacuum prior to starting the removal.
  2. Shutdown and seal ventilation system if exhaust or supply diffusers are in enclosure.
  3. Friable material containing asbestos that is to be removed must be wetted with water containing a wetting agent.
  4. Compressed air shall not be used to clean up and remove asbestos dust from any surface.
  5. Only persons wearing protective clothing and equipment shall enter a work area where there is an asbestos dust hazard.
  6. Frequently during the removal work and immediately upon completion of the work, dust and waste containing asbestos shall be cleaned up and placed in an asbestos disposal bag.
  7. The work area shall be separated from the rest of the workplace by walls, barricades, fencing or other suitable means.
  8. The spread of asbestos-containing material from the work area shall be prevented by disabling the mechanical ventilation system serving the work area and sealing all openings or voids, including ventilation ducts to and from the working area.
  9. Surfaces below the work area shall be covered with drop sheets of polyethylene or other suitable material that is impervious to asbestos.
  10. A glove bag shall not be used to remove insulation from a pipe, duct or similar structure if:
  • It may not be possible to maintain a proper seal for any reason including, without limitation:
    • The condition of the insulation
    • The temperature of the pipe, duct or similar structure
  • The bag could become damaged for any reason including, without limitation:
    • The type of jacketing
    • The temperature of the pipe, duct or similar structure
  1. Immediately before the glove bag is attached, the insulation jacketing or coating shall be inspected for damage or defects, and if any damage or defect is present, it shall be repaired.
  2. The glove bag shall be inspected for damage or defects:
    • Immediately before it is attached to the pipe, duct or other similar structure
    • At regular intervals during its use
  3. If damage or defects are observed when the glove bag is inspected prior to use, the glove bag shall not be used and shall be disposed of.
  4. If damage or defects are observed during use the glove bag:
    • The use of the glove bag shall be discontinued
    • The inner surface of the glove bag and the contents, if any, shall be thoroughly wetted
    • The glove bag and the contents, if any, shall be removed and disposed of as friable asbestos containing material
    • The work area shall be cleaned by vacuuming with a vacuum equipped with a HEPA filter before removal work is resumed
  5. When the removal work is completed:
    • The inner surface of the glove bag and the waste inside shall be thoroughly wetted and the air inside the bag shall be removed through an elasticized valve, by means of a vacuum equipped with a HEPA filter
    • The pipe, duct or similar structure shall be wiped down and sealed with a suitable encapsulant
    • The glove bag, with the waste inside, shall be disposed of as friable asbestos containing material
    • The work area shall be cleaned by damp wiping or by cleaning with a vacuum equipped with a HEPA filter
  6. Decontaminate protective clothing/respirators:
    • Thoroughly HEPA vacuum and/or damp-wipe all exposed skin, protective clothing and respirator
    • Remove decontaminated protective clothing. Protective clothing may be reused throughout a day. Dispose of protective clothing after each shift
    • Leave the work area in street clothes and proceed to the nearest washroom to wash exposed skin and respirator with soap and water
    • Before washing the respirator, remove the filters; cover the inlet side of the filters with tape (for storage and reuse) or dispose of the filters as asbestos waste

Notification

Notify Plant Operations design section Rob Hartung (ext. 36897) to have the inventory updated.

Type II asbestos work: Minor repair of thermal insulation

Application

These procedures apply only if the friable asbestos disturbance involves patching or minor repair of thermal insulation. This activity may generate enough airborne asbestos to be classified as a Type 2 operation.

Personal protection

Protective clothing

Full body disposable clothing including suitable footwear and head covering. The covering must fit snugly at the ankles, wrists and neck in order to prevent asbestos fibres from reaching the garments and skin under the protective clothing and made of material that does not readily retain nor permit penetration of asbestos fibres.

Respiratory protection

Air purifying half-mask respirator equipped with N-100, R-100 or P-100 particulate filter.

Materials and equipment

HEPA vacuum

Vacuum cleaner equipped with a high efficiency particulate aerosol filter, fitted with appropriate tools. The vacuum equipment shall have a filtering system that is at least 99.97% efficient in collecting a 0.3 micrometre aerosol.

Drop sheets

Polyethylene sheeting of 6 mil. thickness to control the generation of secondary dust.

Amended water

Water with wetting agent added for the purpose of reducing surface tension to allow thorough wetting of the asbestos-containing material (2 teaspoons dishwasher detergent to 1 gallon water).

Sprayer

Garden reservoir type, low velocity, capable of producing mist or fine spray.

Small tools

Sponge(s),cloth(s), adjustable knife, flashlight, ladder,etc.

Supplies
  • Reinforced duct tape or double-sided tape suitable for sealing polyethylene bags
  • And/or sealing polyethylene to all surfaces to be covered
  • Asbestos waste containers/bag
Signage

Warning of asbestos hazard at the entrance to the work area and that entry into the area is restricted to authorized personnel only (see sample below).

D A N G E R
ASBESTOS
CANCER AND LUNG DISEASE HAZARD
AUTHORIZED PERSONNEL ONLY
RESPIRATORS AND PROTECTIVE CLOTHING
ARE REQUIRED IN THIS AREA

Work practices

General
  • No eating or drinking is allowed in contaminated work areas.
  • Compressed air is not be used to clean up and remove dust from any surface.
  • Facilities for washing hands and face (washroom) shall be available to all workers and shall be used by every worker after leaving asbestos work areas.
Preparation of work area
  1. Post signs warning of asbestos hazard on mechanical room door(s) (see signage).
  2. Remove any friable material containing asbestos and any visible dust that is likely to be disturbed and that is lying on any surface in the vicinity of the work area by HEPA vacuuming or damp wiping.
  3. Clear immediate work areas of all moveable furnishings or equipment. Any furnishings or equipment not removed shall be adequately covered and sealed using 6 mil. polyethylene and tape.
  4. If the work area is not enclosed by walls, erect tape barriers to keep all non-protected personnel at least 20 - 30 feet away. Post signs warning of asbestos hazard at the tape barrier, or where the work area is enclosed by walls, on all closed entrances to the work area.
  5. An enclosure is not necessary for this activity. Where practical, a drop-sheet below the work is required; if possible, extend the drop-sheet at least 3 feet beyond line of work.
  6. Shut down all mechanical ventilation to and from the local work area. As appropriate, seal and tape all ventilation ducts to and from the local work area with double polyethylene plastic sheeting.
  7. Wear respiratory protection and protective clothing as described in personal protection - “respiratory protection” and “protective clothing”.
Procedure
  1. Using HEPA vacuum, clean insulation and existing jacketing of any loose asbestos debris.
  2. Thoroughly wet (with amended water) the surface of asbestos insulation to be re- jacketed. Maintain in wet condition throughout work.
  3. Remove the asbestos-containing material as required and place directly into asbestos waste containers. Double bag all waste and HEPA vacuum and/or damp-wipe the second container immediately prior to passing it out of the enclosure.
  4. Apply insulation cloth and lagging cement.
  5. Frequently and at regular intervals during the doing of work and immediately upon completion of the work, remove dust and waste from the workplace by HEPA vacuuming or damp-wiping.
  6. HEPA vacuum and/or damp wipe drop sheet. Double bag all waste and HEPA vacuum and/or damp-wipe the second container prior to removing from work area. Clean all reusable tools/equipment.
  7. Decontaminate protective clothing/respirators:
    • Thoroughly HEPA vacuum and/or damp-wipe all exposed skin, protective clothing and respirator
    • Remove decontaminated protective clothing. Protective clothing may be reused throughout a day. Dispose of protective clothing after each shift
    • Leave the work area in street clothes and proceed to the nearest washroom to wash exposed skin and respirator with soap and water
    • Before washing the respirator, remove the filters; cover the inlet side of the filters with tape (for storage and reuse) or dispose of the filters as asbestos waste

Type III asbestos work procedures

  1. All type III asbestos work will be conducted by contractors approved by Plant Operations.
  2. All workers must have successfully completed the Asbestos Abatement Worker training program approved by the Ministry of Training, Colleges and Universities (effective November 2007).
  3. Supervisors must have successfully completed the Asbestos Abatement Supervisor Training Program approved by the Ministry of Training, Colleges and Universities (effective November 2007).
  4. All type III asbestos work will be done as prescribed in designated substance — asbestos on construction projects and in buildings and repair operations, Ontario Regulation 278/05.

Notification of type III work

Prior to Type III work, Plant Operations shall notify the following of the project:

  1. The local Ministry of Labour Office in writing. The notification must contain the following:
    • The name and address of the person giving the notice
    • The name and address of the owner of the place where the work will be carried out
    • A description of the work that will be carried out
    • The starting date and expected duration of the work
    • The name and address of the supervisor in charge of the work
  1. Occupants of the building via faculty/building administration.
  2. Safety Office if procedures vary from the regulations, for submission to the Joint Health and Safety Committee.
  3. After removal a copy of the air monitoring report shall be forwarded to the Safety Office for submission to the Joint Health and Safety Committee.

Asbestos waste

Waste disposal

Contractors/sub-contractors are responsible for disposal of asbestos waste generated under their contract.

Asbestos waste generated by UWaterloo employees will be handled as follows:

Asbestos

  1. Friable asbestos must be transported as per Transport of Dangerous Goods Regulations (see table below).
UN number Shipping name and description Class Packing group Limited quantity index
UN 2212 ASBESTOS BLUE (crocidolite) when not fixed in a natural or artificial binder material or included in a manufactured product; ASBESTOS BROWN (amosite, mysorite) when not fixed in a natural or artificial binder material or included in a manufactured product; BLUE ASBESTOS (crocidolite) when not fixed in a natural or artificial binder material or included in a manufactured product; or BROWN ASBESTOS (amosite, mysorite) when not fixed in a natural or artificial binder material or included in a manufactured product 9 II 1 kg
UN 2590 ASBESTOS, WHITE (chrysotile, actinolite, anthophyllite, tremolite) when not fixed in a natural or artificial binder material or included in a manufactured product 9 III 5 kg
  1. Asbestos waste is wetted and double bagged in approved asbestos disposal bags, sealed with duct tape.
  2. The exterior of the bags are to be cleaned with a damp cloth or a HEPA vacuum immediately before removal from the work area.
  3. Transport asbestos waste to the Bauer Warehouse in the vehicle cargo area. Do not use passenger van.
  4. Place asbestos waste in containers supplied at the Bauer Warehouse.
  5. Plant Operations grounds section will arrange for a roll-off bin designed for the transport of asbestos waste in accordance with Transportation of Dangerous Goods Regulations.
  6. Note non friable asbestos may be shipped in the same manner.
    Only accredited waste haulers may transport bulk asbestos waste.

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Legislation

Ontario regulation 278/05

Designated substance - Asbestos on construction projects and in buildings and repair operations made under the Occupational Health and Safety Act

Made: June 8, 2005
Filed: June 10, 2005

and

A guide to the regulation respecting asbestos on construction projects and in buildings and repair operations

Issued: November 2007

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