23 JANUARY, 2014 Michael Ong Principal Consultant · ASBESTOS SURVEY & RISK ASSESSMENT 23 JANUARY,...

ASBESTOS SURVEY & RISK ASSESSMENT

23 JANUARY, 2014Michael Ong Principal Consultant

ESIS ACADEMY

• Conducting Asbestos Survey in Buildings in Asia Pacific

Region

• Photographs showcasing internal and external of

buildings inspected for asbestos survey

• Main Types of Asbestos fibers and possible locations

and materials

• Hazard identification, risk evaluation and risk control

AG

EN

DA

Copyright © ESIS Academy 2014


measures based on Code of Practice Risk Assessment

Matrix

• Invitation to participate in “WSQ Survey Asbestos and

other fibers at the Workplace” and “WSQ Remove

Asbestos in Workplace”

AG

EN

DA

ASBESTOS SURVEY – Manage Asbestos Hazards


IDENTIFYING ASBESTOS CONTAINING MATERIALS

NonNonNonNon----friablefriablefriablefriable FriableFriableFriableFriable

ConcreteConcreteConcreteConcrete Acoustical ceilings

StuccoStuccoStuccoStucco Pipe Insulation

• Surfacing Materials

• Insulating materials

• Building materials

Electrical installations


RoofingRoofingRoofingRoofing Fire doors

Floor TileFloor TileFloor TileFloor Tile Fireproofing

Transite PipeTransite PipeTransite PipeTransite Pipe Linoleum backing

Texture coatings

• Electrical installations

• Fire retardant / proofing

• Plaster materials

• Manufactured products

ASBESTOS AND FIBERS – 3 Main Types

Characteristics Chrysotile Amosite Crocidolite

SynonymsWhite asbestos; serpentine

asbestos

Brown asbestos;

mysoriteBlue asbestos

Chemical Formula Mg3Si2O5(OH)4 [Fe7Si8O22(OH)2]n[Na2(Fe,Mg)5

Si8O22(OH)2]n

CAS Registry 12001-29-5 12172-73-5 12001-28-4

Flexibility Good Fair Good


Flexibility Good Fair Good

Melting Point 800 – 850 oC 600 – 900 oC 800 oC

SolubilityInsoluble Insoluble Insoluble

Water

Solubility56 12 3.14

Acids

Solubility1.03 6.82 1.2

Bases

Specific Gravity 2.55 3.43 3.37

COMPETENT PERSON FOR ASBESTOS SURVEY


TYPES OF ASBESTOS SURVEY

Type of InformationType of Survey

Management Refurbishment /demolition

Types of asbestos product � �

Type asbestos � �

Location of the material � �


Quantity of the material(s) � �

Accessibility of the material(s) �

Vulnerability of the material(s) �

Amount of damage or

deterioration�

Surface treatment �

HAZARD IDENTIFICATION IN ASBESTOS SURVEY

Release of asbestos

ChemicalsErgonomic

risks


Asbestos affecting people

Physical hazards

Falling from

height

Confined space

risks

RISK EVALUATION IN ASBESTOS SURVEY

� Risk Assessment shall be

conducted before any new

asbestos survey work commences.

� Use the Risk Matrices


� Use the Risk Matrices

recommended by COP on WSH

Risk Management.

RISK CONTROLS IN ASBESTOS SURVEY

Type of control Example

Most effective Elimination Avoid intrusive sampling or work method that may disturb the material causing the

release and spread of ACM

Substitution Use work methods that will cause less disturbance to the ACM

Engineering Control Use of local exhaust ventilation, dust extraction system, or suitable types of dust

control equipment.

•Use wet method and dust suppression tools.

•Use of tools with dust extraction systems

•Build enclosure or screen (eg., polyethylene sheet) to prevent spread of dusts to

other areas.

•Use of vacuum cleaning device with a High Efficient Particulate air (HEPA) filter to


•Use of vacuum cleaning device with a High Efficient Particulate air (HEPA) filter to

keep area clean and prevent dust accumulation.

•Use impermeable bag or sealable container to contain waste materials.

Administrative Control • Establish safe working procedures (SWP) that include steps to be taken during

sampling or handling of ACM, waste removal as well as emergency situations.

• Maintain good personal hygiene standard and housekeeping.

• Segregate survey area with barrier and restrict entry to only authorised persons.

• Post warning signs at the entrance to the survey area.

• Train persons at work

• Conduct survey in team(s) of two persons, so that members can help each other

with carrying equipment (e.g. ladder), labelling of sample and documentation

etc; and also at remote or dangerous locations.

Least Effective Use of Personal

Protective Equipment

(PPE)

Use of PPE such as respiratory protector, eyes protector, disposable coveralls, safety

gloves, safety shoes etc. to protect against inhalation and contact with asbestos.

ASBESTOS SURVEY – Inspecting the roof tops


ASBESTOS SURVEY – Inspecting the roofing structure


ASBESTOS SURVEY – Inspecting the equipment

installations on external of buildings


ASBESTOS SURVEY – Inspecting the area above the

ceiling


ASBESTOS SURVEY – Inspecting the internal areas of

building


ASBESTOS SURVEY – Inspecting the equipment and

machines


ASBESTOS SURVEY – Inspecting the facility

engineering equipment


ASBESTOS SURVEY – Inspecting the work rooms


ASBESTOS SURVEY – Inspecting the construction site


ASBESTOS SURVEY – Inspecting the piping

installations


ASBESTOS SURVEY – Inspecting the wall structure


ASBESTOS SURVEY – Inspecting the floor structure


ASBESTOS SURVEY – Inspecting the enclosed spaces


ASBESTOS SURVEY – Inspecting the external of

buildings


COMPETENCY IN ASBESTOS SURVEY AND REMOVAL

� Attend the asbestos surveyor and removal training courses.

� Pass both the assessment plans.

� Register with MOM as a Competent Person in asbestos

survey and removal.


� Gaining experiences in asbestos survey and removal in

multiple industries.

SURVEY ASBESTOS AND OTHER FIBERS RISKS AT THE

WORKPLACE

� Conducted by Michael Ong, Principal

Consultant, ESIS Academy Pte Ltd.


REMOVAL OF ASBESTOS AT WORKPLACE

� Conducted by Marc Zimpelmann,

VP, ESIS Academy Pte Ltd.


• Conducting Asbestos Survey in Buildings in Asia Pacific

Region

• Photographs showcasing internal and external of

buildings inspected for asbestos

• Main Types of Asbestos fibers and possible locations

and materials


RE

CA

P



measures based on Code of Practice Risk Assessment

Matrix

• Invitation to participate in “WSQ Survey Asbestos and

other fibers at the Workplace” and “WSQ Remove

Asbestos in Workplace”

RE

CA

P

23 JANUARY, 2014 Michael Ong Principal Consultant · ASBESTOS SURVEY & RISK ASSESSMENT 23 JANUARY,...

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