Asbestos Invstigation Abatement and Managemnet
Asbestos Invstigation Abatement and Managemnet
Asbestos Invstigation Abatement and Managemnet
Investigation,
abatement &
management
Reporting Guidelines
Module No. 4:
Factories, Industrial
Plant and Plant Rooms
A supplementary guide to the Code of Practice on
Preparation of Asbestos Investigation Report, Asbestos
Abatement Plan and Asbestos Management Plan
Asbestos Management and Control Section
Environmental Protection Department
August 2015
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Contents
Part 1 ‐ Preparation of Asbestos Investigation Report
Page
Introduction 1
Section 1 Investigation Planning 1
Section 2 Site Inspection 2
Section 3 ACM Identification 7
Section 4 Bulk Sampling 8
Section 5 Material and Hazard Assessment 9
Section 6 Format of Asbestos Investigation Report 9
Section 7 Meeting Environmental Requirements and the respective Codes of Practice 10
Part 2 ‐ Preparation of Asbestos Abatement Plan
Page
Section 8 General specification requirements 10
Section 9 Method statements for asbestos abatement 11
Section 10 Asbestos Work Zone Plans 12
Part 3 ‐ Preparation of Asbestos Management Plan
Page
Section 11 Preparation of Operation and Maintenance Plan 13
Appendices
Appendix A Photographs of common ACMs
Appendix B Illustration of typical ACMs occurrences
Appendix C Checklist for site Inspection
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Introduction
The change from a manufacturing economy to a service economy over the past few decades in Hong
Kong has led to a reduction in the number of factories and industrial plant. However, manufacturing
industries and industrial areas still exist, and plant rooms are common to many different building
types. Asbestos containing materials (ACMs) are common in all types of factories and industrial
plant and plant rooms throughout Hong Kong. Industrial plant – even when of fairly recent
installation – can contain a variety of ACMs, and investigations should take place prior to
engineering works and plant replacement. All types of plant can contain a whole range of ACM
products due to the requirement for heat and acoustic protection, hot water/steam supply,
ventilation/air conditioning, electrical systems and extraction of waste gases/liquids. ACMs are
common to electrical supply systems and air conditioning or ventilation extract systems and these
occur in many types of premises. Apart from the plant, the buildings themselves can be constructed
from, or contain, a variety of ACMs, including roof and wall sheeting, coatings to support beams and
columns, wall and ceiling partitions and floor coverings. There is pressure from society to re‐zone
industrial areas for other uses, and it is important that owners carry out an asbestos investigation of
their premises before removal of plant and equipment. In view of the implementation of a total ban
of asbestos, including import and installation of new ACM products since 4 April 2014, the
occurrence of these materials in industrial plant will reduce over time. However, the Registered
Asbestos Consultant (RAC) should be aware that industrial premises and plant rooms in all types of
premises of very recent age can still contain ACMs.
A comprehensive inspection of industrial premises and plant rooms can be difficult to when they are
in operation. For example, inspection of plant such as electrical control systems, steam supply,
incinerators etc., pose electrocution and burn hazards if operational. High ceilings and large number
of plant installed can obscure smaller ACM items and make access difficult. Flues and chimneys
often need work platform or scaffold access to inspect. Older plant rooms have had repeated
maintenance works since commencing operation – making it a challenge to identify remaining ACMs
from redundant services, fixtures and fittings. Asbestos containing plant items can occur along with
non‐asbestos replacements. There is often a mix of asbestos and non‐asbestos compressed fibre
gaskets.
Whilst the procedures and advice detailed in the EPD’s Code of Practice on Asbestos Control
“Asbestos Work Using Full Containment or Mini Containment Method” and the General Guidelines
should be followed, these additional guidelines have been produced for preparation of asbestos
investigation reports (AIR) and asbestos abatement plans (AAP) which are suitable for industrial
premises and plant rooms. Implementation of asbestos management plans (AMP) are considered
good practice for these premises in respect of the large quantity of ACM or other considerations in
asbestos abatement program which will be specified in this guidelines.
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Asbestos: Investigation, abatement & management Module 4: Factories,
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Types of pipe and plant insulation present.
Types of pipe/plant flange gaskets present.
Access to all areas is important or ACMs may be missed. Investigation of service
ducts inside the premises must take place. However, at all times the investigation of
the plant room, high ceiling areas and external flues/chimneys should be carried out
with due regard for personal safety. Areas not inspected shall be clearly detailed in
a section of the AIR dedicated to listing inaccessible areas/plant, and also included
on site drawings. The default action for un‐inspected areas shall be to assume ACMs
are present.
During the investigation the RAC must inspect for and take note of pipe and plant
insulation materials and any associated flange gasket material. Relying on random
bulk sampling of insulation materials is not sufficient to find and identify all potential
ACMs. The investigation of insulation materials is recommended to be undertaken
as follows:
Identify all suspect plaster/cloth/rope pipe insulation, but do not
disturb the material until bulk sample analysis confirms as ACM or non‐
ACM. The outer cement render common to pipe insulation should also
be included in bulk sampling before disturbance.
Closely investigate insulation and assess how homogeneous the
material is. It is common that, during the lifetime of a factory or plant
room, engineering alteration works, plant replacement or repairs
through water leakage, valve replacement or impact damage, may have
resulted in replacement or repairs to short lengths or areas of insulation.
This can result in a mix of ACM and non‐ACM insulation materials being
present. Differing surface hardness, variations in insulation thickness or
smoothness of outer coating, or differing paint colour can all indicate
that replacement insulation is present. Differing insulation is common
to pipe elbows – particularly where preformed lengths of insulation
have been used for straight pipe runs. All of these areas should be
visual checked and bulk sampled if different insulation is suspected to
be present. Modern, preformed sections of outer metal cladding to
pipes and plant are common in some plant rooms and can give the
impression that the insulation materials beneath are of recent
installation. This is very misleading and older ACM insulation materials
can be present. The RAC should arrange to remove sufficient metal
cladding to enable a full inspection. This may require arrangement with
the client and an engineering contractor employed to re‐install cladding
– particularly where fixed by rivets.
Although a flue, pipe or plant may have non‐asbestos insulation, the
gasket material used in flange joints may be asbestos – friable asbestos
rope/cloth or non‐friable hard non‐woven sheet gaskets materials.
Flange gaskets should be checked, but can be difficult to access for
sampling or even dangerous if a burn hazard is present. The RAC should
discuss with site engineers about what materials have been installed
and make arrangements to make a return inspection when flange joints
can be dismantled for inspection. Premises workshops may contain
examples of the materials used for flange gaskets , gland packing etc.
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It sometimes occurs that flue, pipe or plant insulation can have two or
more types/layers of different insulation. Therefore, whilst insulation
that is visibly, or by analysis, confirmed to be ACM should be left
undisturbed, insulation that is visibly non‐ACM, eg. canvas, glass fibre,
polystyrene, foam etc., should be subjected to further investigation.
Plaster insulation confirmed by analysis to be non‐ACM should also be
included in these further investigations as follows: a sharp edged tool,
such as a screwdriver or knife, should be used at very regular intervals
to check for concealed layers of different insulation. Investigation
should be made down to the metal of the pipe/plant. Glass fibre
insulation with an inner layer of asbestos rope or cloth is particularly
common in Hong Kong, and glass fibre insulation with asbestos plaster
to pipe/flue elbows also occurs. The RAC should make enough
inspections to ensure that these materials are not missed. Glass fibre
insulation is commonly covered by an outer canvas wrap. The string
used to stitch the edges of the canvas wrapping together can be
asbestos string and should be checked. Pipe valves in particular are
prone to replacement or repair and can have differing insulation to
pipes either side.
Even when pipe insulation is visibly non‐ACM and inspections show no
concealed layers, asbestos cloth or asbestos sheet gasket material has
sometimes been used to line the metal pipe support brackets.
Therefore, both exposed brackets and those covered by insulation
should be checked.
During the bulk sampling exercise, the RAC should closely supervise the
laboratory technician and ensure that full depth bulk samples are taken
to ensure that differing insulation layers are sampled. Inspection of
sample holes before repair, or the technician reporting differing
resistant to the sampling tool can all indicate differing insulation layers.
Inspection of the base of a sample hole should always show the bare
metal of the pipe/plant to ensure full‐depth samples have been taken.
It is important to carry out a thorough inspection of the floor of industrial premises –
particularly around areas where original plant has been removed/replaced and in
the base of ducts. Older plant may have been removed in the past without a
thorough investigation for ACMs. This can result in ACM debris being left on floors –
especially remnants of rope/cloth insulation and hard gaskets. An assessment of
potential contamination may have to be made and recommendations given for a
remedial decontaminationInspection of plant, such as boilers, calorifiers,
incinerators, electric generators should not only check outer insulation materials but
must also check for flange gaskets and possible concealed materials as follows:
Outer metal casings should be removed to check inner insulation and
for gaskets. Inspection should be limited at first to check that outer
metal sheeting is not lined with ACMs such as asbestos paper. If this
material is present it should be sampled but the cladding left further
undisturbed and the plant listed as not fully inspected.
Plant rooms with multiple boilers / calorifiers / incinerators commonly
rotate the operation of plant leaving down‐time for inspection and
maintenance. Arrangements should be made to carry out internal
inspection of plant during these maintenance periods.
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Inspections should include for multiple layers of insulation, gaskets to
flange joints to pipes, burner units and flues. Boilers and incinerators
constructed of sectional metal parts can have internal gaskets or
packing that can only be identified during dismantling of the plant.
Plant is commonly sited on concrete plinths. Check that no suspect
insulation materials or sheet linings are present in these areas.
Arrangements should be made with the Employer to return for further
inspections when this takes place. Service manuals to all plant should
be read where available to check for any concealed ACMs. This can
reduce the need for inspection during dismantling.
Inspection of flues to plant and any chimneys they lead to must take
place at regular intervals along their length – at least at the base,
midway and at exit from the plant room to check for differing insulation
or remnants of old ACM insulation. If inspection is not possible along
the full length of a flue or chimney, this must be stated in the AIR and
uninspected sections marked on drawings. Even though a flue may
have non‐ACM insulation, inspection hatches or ash collection doors
can have asbestos gaskets – both to the interior lining to the hatch, or
as a door seal on the hatch and/or flue. Many boiler and generator
flues are welded metal pipes and flange gaskets may only occur at
connection ends or to service hatches. However, other plant items may
use sectional ducting as an extract or air intake and this should be
checked for flexible joints, flange gaskets and internal linings along its
length. Asbestos cloth flexible joints and flange gasket material is
commonly found in plant rooms. Internal insulation linings to metal
ducting is less common but should always be checked for. Proprietary
metal flues can have differing layers of construction including ACM
layers and must be checked. This type of flue often has a manufacturers
label or plate installed so an online check can be made as to whether
concealed ACMs are present, or the site may have the original service
manual. If the flue is not confirmed by research or dismantling as non‐
ACM it should be listed as not inspected and assumed to contain ACMs.
Prior to dismantling incinerators, dust sampling for dioxin levels may be
necessary, and if the RAC is unfamiliar with this hazard, they should
seek expert advice prior to inspections.
Gas supply pipes and gas burner units to boilers and incinerators often
have hard non‐woven pipe flange gaskets which can contain asbestos.
Pipework and pumps have similar gaskets. Inspection and ACM
identification of these materials is difficult due to inaccessibility for
sampling, and the fact that gaskets can have been replaced many times
resulting in a mix of asbestos and non‐asbestos gaskets. The RAC
should note differing colours and thickness of gaskets material and
sample all types. Replacement sheet gasket material is commonly
present either in the plant room or engineering workshops and samples
can be taken of these materials as well. With the total ban on use of
asbestos in Hong Kong now in force, the RAC should check that no
asbestos‐containing gasket material on site is still being installed and
advise the Employer to dispose of all such material as asbestos waste.
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Asbestos: Investigation, abatement & management Module 4: Factories,
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All service ducts in a factory or plant room should be inspected – both wall and floor
ducts. Concealed pipes can be present in these areas with differing insulation to
that used in the plant room itself. Ducts may be lined with ACM sheeting.
Although pipes may be uninsulated or have non‐ACM insulation check that no
suspect packing is present around the pipes as they exit the plant room walls, ceiling
or floor.
Check walls, floor and ceiling for cut‐off remnants of redundant pipework. These
may have older suspect insulation still present. Some noisy plant rooms have
acoustic wall panels fitted – commonly glass fibre mats with a covering perforated
metal sheet. If this is a recent installation in an old plant room it may obscure any
redundant cut‐off pipe ends and a note should be made for return inspections when
the acoustic panels are taken down.
Although the emphasis in a factory or plant room is on an inspection of the plant
and pipe insulation and gaskets, industrial premises and plant rooms also contain
many other types of ACMs associated with air supply and conditioning systems,
electrical control panels and fuse boxes and used as acoustic or fire protection to
walls, ceilings and doors. All areas of the factory or plant room should be thoroughly
checked.
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Asbestos: Investigation, abatement & management Module 4: Factories,
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3.3 Common internal occurrences – both to stand‐alone buildings and plant rooms within
premises – can include the following ACMs:
‐ sprayed coatings – both to ceilings, walls and support beams
‐ asbestos cement drain pipes
‐ asbestos insulation to pipework
‐ asbestos cloth/sheet linings to pipework support brackets, including water,
steam and condenser pipes
‐ asbestos insulation to flues and linings to chimneys
‐ asbestos insulation to boilers, incinerators, calorifiers, generators and other
plant, including internal joint seals and gasket materials
‐ Hard non‐woven asbestos gaskets to pipe flange gaskets and plant room
equipment
‐ asbestos cloth flexible joints and flange gaskets to ventilation extract systems
and air conditioning systems, including internal fire dampers
‐ asbestos sheet linings (internal and external) to ducts
‐ asbestos wall sheeting and cladding
‐ asbestos ceiling tiles
‐ asbestos sheet lining to fire doors
‐ asbestos lining to plant plinths
‐ asbestos cloth blankets to wall and door louvres
‐ asbestos cloth fire blankets
‐ asbestos packing to tops of partition walls
‐ packing materials (cloth, rope, plaster, mastic) to cable/pipe exit/entry points
‐ asbestos packing or sheeting to bus bar, cables and cable trays through floor and
wall slabs
‐ asbestos containing fuse boxes
‐ asbestos vinyl floor tiles and adhesive
‐ asbestos friction gaskets to motors such as lift brakes
‐ asbestos sheet gasket material and asbestos rope gland packing stored in plant
room or workshop.
3.4 The above lists are not a fully comprehensive list of possible ACMs, just the most likely. It is
emphasized that it is the duty of the RAC to inspect all areas for both commonly and rarely
occurring ACMs. The illustrations attached as appendix B summarises typical ACMs and
their locations.
3.5 The ACM Identification and Abatement Library should be consulted for all the associated
ACMs listed since they provide recommended best practice for ACM identification.
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Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
non‐asbestos insulation and differing insulation can be used for pipe/flue bends
than for straight lengths. Previous improper removal of asbestos insulation can
leave debris on metal pipe/flue surfaces that are concealed beneath newer
insulation. Therefore, the RAC must not just rely on bulk sample points to identify
ACMs, but must carry out physical inspection of pipe and flue insulation, removing
non‐ACM insulations to inspect beneath at regular intervals along pipe/flue runs.
This also applies to inspection of services in wall and floor ducts.
Best practice advice for bulk sampling is included where necessary in individual ACM
Identification and Abatement Library sheets for the associated ACMs.
Any sampling of elements of plant that is to be returned to working order shall
require the prior permission of the owner. The RAC should use visual identification,
where possible, to avoid damage.
Where factories or plant room demolition is to occur, or plant is to be replaced as
part of engineering works, all affected plant should be dismantled sufficiently for the
RAC to identify all suspect materials inside and allow access for sampling by the
laboratory. The RAC should attend all dismantling of plant and stop the procedure
before any suspect ACMs are disturbed. The principal shall be to totally dismantle
plant to prove no ACMs present or sufficient dismantling to prove ACMs present but
not disturb them. Partially dismantled equipment with ACMs identified can be listed
as having additional suspect concealed ACMs still present.
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8.1 The general guidelines for the preparation of Asbestos Abatement Plan all apply for the
preparation of an AAP for factories and plant rooms. However, some of the general
requirements may need further consideration and adjustment to make them relevant and
applicable to these type of premises. Functioning factories and plant rooms can be a
problem to access and work in. The common occurrence of high risk ACMs, often in difficult
access locations with problems for erection of full containment work zones, can require the
general specification to be expanded to include additional specifications – such as
scaffolding design and erection. Asbestos abatement should be carried out only when
surrounding areas can be shut down and vacated. This specifically applies to removal of pipe
and plant insulation. Insulation removal from hot pipes is difficult, causes problems of heat
stress and thorough cleaning of metal surfaces. The RAC should consider the requested
scope of asbestos abatement and liaise with the Employer to discuss options for abatement.
Review the following requirements to ensure the Registered Asbestos Contractor can meet
the general specification for the abatement works:
Responsibility to isolate both electric and gas supplied plant.
Site access requirements – any particular access restrictions for vehicles, security
arrangements?
Fire safety requirements? Some premises storing toxic or flammable materials have
strict fire safety requirements and timber frames for work zones or timber step
ladders may not be allowed. For abatement works with incinerators will dioxin
containing ash removal be part of the works?
Industrial premises can have high ceilings. Are temporary work platforms required?
Which type is suitable and what protection measures are necessary to avoid
contamination during abatement?
Which plant requires shut down and which pipes isolation and draining of water?
Do any new pipe connections/valves / diversions need to be installed to allow work
on pipes/plant. If some plant has to remain in operation, will construction of
asbestos work zones prevent access or air supply?
Review removal of insulation from pipework. EPD requirement is for pipes to be
wrapped and cut out in whole lengths for disposal as asbestos waste. Advise the
Employer of this requirement to allow for any planning of new pipe installations.
Storage of equipment
Review the specification for waste handling and disposal.
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In hot plant rooms liaise with the Employer and Registered Asbestos Contractor /
general contractor and agree on shorter working shifts and other measures to
remedy heat stress. If this is a serious issue, then the Emergency Procedures section
of the AAP should include specific measures for monitoring personnel and actions to
be taken in case of collapse or burns.
For partial abatement works, the abatement plan should detail measures for RAC
inspection after completion of works to check condition of ACMs left in‐situ and
requirement for asbestos hazard labels to be fixed and maintained.
9.3 Reference should be made to the ACM Identification and Abatement Library for the ACMs
associated with factories and industrial plant. These reference sheets provide specific advice
for the preparation of AAP and inspection of abatement works that should be included in the
AAP prepared.
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Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
quantity of high risk ACMs, their location and the likelihood of damage in a plant
room. It may be advisable to have shorter re‐inspection periods.
Introduction of any materials containing asbestos into premises is now totally
banned in Hong Kong. Operators of industrial premises and plant rooms are at risk
of not meeting this requirement if a monitoring and checking scheme is not
implemented as part of the O&MP. This specifically applies to introduction of plant
from countries that may still be using asbestos in the manufacture of their products.
Also the provenance of sheeting used to produce hard non‐woven plant gaskets
should be checked. Electrical and engineering contractors may have stocks of
asbestos‐containing gasket material that could be used without the Employers
knowledge. All works specifications should specify the use of non‐ACM gaskets and
the RAC should check the material before use. Certificates confirming no asbestos
materials may not be reliable – depending on the country of manufacture – and bulk
sampling and analysis is recommended in case of doubt. The O&MP should contain
a section detailing the procedures for vetting new plant installation and
maintenance materials.
General electrical and plumbing contractors will have to be part of the emergency
response team to assist in remedial actions for disturbed and damaged ACMs in a
plant room. Their safety procedures for shut down and isolation of plant should be
incorporated into the method statements for likely emergency action, and if
necessary they should be included in training drills for use of personal protective
equipment and ACM cleanup.
Prior to the implementation of an O&MP the RAC should consider the requirement
for any protective measures for ACMs. Impact damage in a factory or plant room, or
water leaks, are always a possibility and abatement plans could include protective
enclosure measures, for example timber boxing to ACM insulated pipework and
flues in vulnerable areas.
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Asbestos: Investigation, abatement & management Module 4: Factories,
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Appendix A:
Asbestos insulation to condensate tank
Asbestos plaster insulation to boiler flues (beneath
Asbestos calorifier and pipe insulation metal sheet). Asbestos cloth gaskets to access plates.
Asbestos cloth gaskets to front plates of boiler
Asbestos cement suspended ceiling tiles above boilers
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Asbestos rope pipe insulation Asbestos cloth flexible joint to air handling unit
Asbestos cloth lining to pipe support bracket to
condenser pipes Asbestos cloth flange gaskets to boiler burner unit
Asbestos string stitching to canvas wrap over glass fibre
pipe insulation
Damage to sprayed asbestos plaster to plant room wall
Asbestos gasket sheets for plant flange joints
Asbestos cloth insulation to generator flue
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Asbestos cement wall sheeting
Asbestos packing to cable points through floor slabs
Asbestos coating to metal profile walls (“Galbestos”)
Asbestos cement (or coated metal) louvres and canopies
Asbestos pipe insulation in underground service duct
Asbestos gaskets to fire dampers in plant/walls
Asbestos sheet ducting to cables
Asbestos flue insulation
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Appendix B: Illustration of typical ACM occurrences
15 5
16 12
17
10
14 12
8 13
11
17
9 10
8 12
6
7
7
11
Asbestos concrete roof tiles Bituminous waterproof roof covering
Asbestos flue insulation Asbestos coating to profile metal wall sheeting
5 Asbestos lining to chimney and/or 6 Asbestos rope seals to inspection hatches
ACM flue inside
7 Asbestos boiler/calorifer insulation 8 Asbestos pipe insulation
9 Asbestos insulation only to pipe elbow 10 Asbestos flue insulation
11 Asbestos gaskets to plant flange joints 12 Asbestos containing fuseboxes/switch board
13 Asbestos internal lining to incinerator 14 Asbestos cloth flexible joint to generator
15 Asbestos cloth gaskets to trunking 16 Asbestos gaskets to pumps
17 Asbestos sheet to plant plinth 17 Sprayed asbestos coating to steel columns
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Appendix C: Checklist for Site Inspection
Item – check for relevance Actions required
✔ or ✗
Initial Site Assessment
Has risk assessment been carried out, including
trip/slip/burn hazards & remedial action arranged?
Are arrangements for plant shut down necessary?
Are permit to work procedures complete?
Are as‐built drawings and plant maintenance
manuals available for inspection?
Have arrangements been made for access for high
level inspections?
Are arrangements necessary to break open buried
/ concealed services for inspection?
Asbestos investigation
Identify visible ACMs. Refer to associated ACMs in
the ACM Identification & Abatement Library.
List their type and quantity / condition / location.
Have all insulated pipes been inspected from
source to exit? Record insulation types.
Is their evidence of insulation repair/replacement?
Will bulk sample strategy check all types?
Have inspections been made completely through
plant/pipe insulation to check for different layers?
Have plant/pipe support brackets been inspected
for suspect linings?
Closely supervise all opening up and dismantling of
plant. Stop works before any ACM disturbance.
Has inspection of plant/pipe flange gaskets been
completed, as well as workshop spare parts?
Are there any poor condition ACMs that require
immediate remedial action?
Identify any inaccessible areas and list plant not
opened for inspection. Assume ACM presence or
provide justification for no ACM present.
Take comprehensive photographic record
Carry out material and hazard assessment of all
identified or suspect ACMs
Record details for AAP preparation
Are phases of work zones required? Detail work
sequence. Is isolation/dismantling plant required?
Are scaffold / work platforms necessary to access
ACMs? Obtain scaffold design drawings for AAP.
Are measures necessary to prevent disturbance of
ACMs by other parties prior to start of abatement?
Assess practicality of work zone erection and ACM
abatement from plant. What constraints are
present?
Are there any constraints or problems with cut and
wrap method for removal of pipe/flue insulation?
Asbestos: Investigation, abatement & management Module 4: Factories,
Industrial Plant and Plant Rooms
Item – check for relevance Actions required
✔ or ✗
How will pipes/flues be sealed as they exit work
zones or pass through walls/ceiling?
Would partial removal of wall partitions allow
simpler/larger work zones to be erected? What
measures/checks should be made to ensure no
ACM disturbance during wall removal?
How will plant/pipes be protected from
contamination during abatement of adjacent
ACMs?
Will some plant remain in operation? Detail any
constraints or special provisions, eg. air supply.
Will high room temperature be an issue during
abatement works? Assess remedial options.
Assess the ease of air movers being exhausted to
open air if full containment work zone is specified.
Assess waste quantity. What measures can be
taken to reduce quantity of ACM waste?
Assess site for access constraints and storage of
waste constraints
Record air monitoring locations for reassurance,
leak and clearance air tests. Are environmental air
tests necessary?