Document ID: chunk:federal_register_of_legislation:F2016L00418:body:0:p47
Version: federal_register_of_legislation:F2016L00418
Segment Type: other
Provision Reference: 
Character Range: 121831–124836

not be dismantled until a satisfactory visual inspection and monitoring has taken place.

Dismantling an asbestos removal enclosure
The licensed asbestos removalist should only dismantle a structure used to enclose an asbestos removal area once all of the following are done:
    * asbestos removal work has been completed
    * visual inspection by an independent competent person is satisfactory
    * air monitoring, in the case of friable asbestos removal, is found to be less than 0.01 fibres/ml.
The plastic that formed the enclosure must be disposed of as asbestos waste, along with any other contaminated material that assisted in forming the enclosure. In some cases, structures used in building the enclosure (other than the plastic that formed the enclosure) may be wrapped and sealed in plastic and not opened until in a similar controlled environment, such as another asbestos removal enclosure (for example, collapsible rods used to form the enclosure frame).
The area from which the enclosure was dismantled must be thoroughly cleaned and inspected. This should be followed by further air monitoring demonstrating the levels are below 0.01 fibres/ml.
Ropes, warning signs and protective plastic isolating public areas should not be removed until:
    * the enclosure has been dismantled and removed as asbestos waste
    * satisfactory air monitoring results have been achieved
    * the removal area and its surrounds have been visually inspected by an independent competent person and found to be satisfactory for reoccupation.

Security and checks when using an enclosure
The licensed asbestos removalist should ensure an employee is stationed outside the asbestos work area for the duration of the asbestos removal work to:
    * liaise with the project supervisor
    * check and maintain negative air units, compressor units, decontamination units and hot water service
    * ensure security of the area is maintained
    * communicate with personnel inside the work enclosure
    * instigate emergency or evacuation procedures if necessary.
Records of these checks should be made on a daily basis and kept.

    6.             METHODS FOR SMALL SCALE REMOVAL WORK

Small scale friable asbestos removal work usually generates enough airborne asbestos fibres to require the use of PPE and generally is carried out only in short periods, for example minor maintenance work. Small scale removal work involves using mini-enclosures, 'glove bag' and 'wrap and cut' techniques.

6.1 Mini-enclosure
Mini-enclosures are suitable for asbestos removal work in areas with restricted access, such as ceiling spaces, and for emergency asbestos removals. Hazards and work procedures that should be considered for large enclosures should also be considered for mini-enclosures.

Building the mini-enclosure
To build a mini-enclosure, the below process should be followed:
    * Off-the-shelf mini-enclosures can be used or alternatively timber or other materials can be used to build a frame. The