Risk Assessment - In-situ Lamination in Manhole Systems

RISK ASSESSMENT FORM Date : 1-2-2014

Ref No:

:

06/CGC/HSE/ RA/29

REV. 0

:

Project Project Name Name : Roads and Infrastructure in Bani Hajer North. Phase 1 & 2

:

Assessment Assessment location location : Locations of storm water manholes on s ite. Description of work :

Activity SR #

:

In-situ Joint Lamination in manhole systems (Benching and cover slabs) Hazard / Conditions that could develop hazard

Who Might be Harmed

Initial Risk e u q s e e s c n n o C

/

1

Storing,ha Storing,handlin ndling g and appl applic icat atio ion n of Epox Epoxy y Venyl Venyl Ester Ester Resin Resin (Cry (Cryst stic ic VE 671) a nd nd Polyster Resin (Crystic 2 72 72 E)

Lack of knowledge on the haza hazard rds s of stor storin ing, g, hand handli ling ng and and application.

Engineer, Supervisor, workers

d o o h i l e k i L

Safety precautions needed to control the Risk to ALARP * g k i n s t i a R R

4

4

16

Supervisor, Involved workers

3

4

12

Involved workers, Store personnel.

3

4

Storage Flammable, Decomposition can lead to rel release ease of irrit rritat atin ing g gase gases s and and vapours.

Store personnel, Involved workers

4

4

Keeping / Handling at work locations.

Store personnel, Involved workers

Spillage - Environmental / hygeinic aspects

Involved personnel / Others in the vicinity

Incompetent supervision Untrained personnel

workers

/

store

:

"

Refe Referr the the MSDS MSDS of Epox Epoxy y Veny Venyll Este Esterr Resi Resin n and and Poly Polyst ster er Resi Resin n (att (attac ache hed d here herewi with th). ). Expl Explai ain n haza hazard rds s to Supe Superv rvis isor or,, invo involv lved ed workers. Take all precautions mentioned in MSDS .

RESIDUAL RISK e u q s e e s c n n o C

d o o h i l e k i L

Responsible Person g k i n s t i a R R

Construction Manager, Site Engineer

2

1

2

Assign competent supervisor having experience in handling and application of Venyl Ester Resin and Polyster Resin

1

1

1

Co Construction Manager, Site Engineer

12

Sele Select ct and trai train n conce concern rned ed work worker ers s incl includ udin ing g stor store e perso personne nnell on the the stor storag age, e, hand handli ling ng and and appl applic icat atio ion n of Veny Venyll Este Esterr Resi Resin n and and Polyster Resin as per the MSDS.

2

1

2

Site Engineer, Gen.Foreman,.Store keeper

16

Store below 30°C in closed containers.

2

1

2

2

1

2

1

1

1

Store keeper

Store in dark away from oxidizing materials. Ensure no source of ignition at storage place. Ensure No Smoking Rule. Prevent unauthorised access to storage. 3

4

12

Brin Bring g only only requ requir ired ed quan quanti tity ty to work work site site and keep keep them them prot protec ecte ted d from sunlight .Ensure no source of ignition at locations of application. Ensure No Smoking Rule.

Gen.Foreman,Foreman

Keep Keep cont contai aine ners rs clos closed ed alwa always ys.. Use Use drip drip-t -tra rays ys.. Avoi Avoid d spil spilla lage ge / entry into drains, sewers and water cou rs rses. Av oi oid subsoil penetration. 3

4

12

Keep people away from and upwind of spill / leak.

Gen.Foreman.Foreman

Spillage shall be soaked up with inert absorbant such as sand, Gather into labelled containers and dispose thru' approved waste disposal contractor. *ALARP - As Low As Reasonably Practicable

Reviewed by : Mr. Radi Shunnar ( Operations Manager)

Assessed Assessed by: Aaron Aaron Aaloosi Date:

:

1/2/2014

Signature : 1 2 3 4

Date:

Likelihood /

Severity /

Remote / Unlikely / Likely / Frequent /

Minor / Major / Severe / Fatality /

HSEF 4.3.1-01-01 Issue: 1 Rev: 2 Issue Date: 20 Mar 2012

:

Signature:

:

Likelihood

: :

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Page 1 of 6


Ref No:

:

06/CGC/HSE/ RA/29

REV. 0

:

Project Name : Roads and Infrastructure in Bani Hajer North. Phase 1 & 2

:

Assessment location : Locations of storm water manholes on site. Description of work :

Activity SR #

Hazard / Conditions that could develop hazard

Who Might be Harmed

/

Storing,handling and Health hazard - Irritating to skin application of Epoxy and eyes Venyl Ester Resin (Crystic VE 671) and Polyster Resin Crystic 272 E Health hazard - Inhalation (Contd…) harmful to internal organs / functions.

involved workers,

:


3

d o o h i l e k i L

4


12

"

Ensure workers use PVC hand gloves,safety googles, Face shield, Plastic a pron, cov erall, safety shoes, helmet. Av oid contact with skin and eyes.


d o o h i l e k i L


1

1

1

Supervisor, Involved workers

Take of contaminated cloth immediately. Report to First aider and get medical attention if irritation persists.. involved workers

3

4

12

Avoid inhalation of vapour / dust. Use heavy duty dust masks to cover nose and mouth. Avoid drinking, eating while handling VE Resin and Polyster resin. Advise involved workers to wash hands and mouth before eating /drinking.

1

1

1

Supervisor,Involved workers

involved workers

3

4

12

Explain the First aid measures explained in the MSDS to involved workers thru' Tool Box Talk. . Keep MSDS in site clinic, store and work place for referring First aid measures

1

1

1

Gen,Foreman, First sider /Site Nurse

Lack of ventilation where Involved workers applying VE Resin and Polyster Resin

3

4

12

VE Resins and Polyster Resins are supposed to be used only in well ventilated areas as per the MSDS.

2

1

2

Gen.Foreman,Foreman

1

1

1

Gen.Foreman,Foreman

Unknown of First aid measures

Handling/ applying strand mats

:

In-situ Joint Lamination in manhole systems (Benching and cover slabs)

Dust hazard

Arrange local exhaust ventilation system like exhaust blowers of suitable ev acuation capacity with large dia exhaust hoses wherever the venilation is not sufficient.

3

4

12

Keep the upstream and down stream manholes open and provide fresh air supply through them into working manhole. Ensure workers use thick dust masks to cover nose and mouth ,safety googles,cover all,safetyhelmet,safety shoes.

*ALARP - As Low As Reasonably Practicable

Reviewed by: Mr. Radi Shunnar ( Operations Manager)

Assessed by: Aaron Aaloosi Date: 1/2/2014

:

Signature :

Likelihood /

1 2 3 4

Remote / Unlikely / Likely / Frequent /

Signature:

:

Severity / Minor / Major / Severe / Fatality /


Likelihood

: :

Date:

:

4

3

2

1

4

16

12

8

4

3

12

9

6

3

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Severity

Page 2 of 6


Ref No:

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06/CGC/HSE/ RA/29

REV. 0

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Activity SR #

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Who Might be Harmed


/ 2

Works inside deep manholes

:

d o o h i l e k i L


Lack of monitoring Works inside confined space. Worker inside manhole

4

4

"

Monitor the work through PTW system for works inside confined space, ensure precautionary measures as per PTW. Take gas test,ensure oxygen presence of 21.8 %, no hazardous gases. Ensure no wastes,contaminations inside.

16


d o o h i l e k i L


3

1

3

Construction Manager, Site Engineer, Gen.Foreman, Foreman Safety Officer

2

1

2

Site Engineer,Supervisor

3

1

3

Construction Manager, Site Engineer, Gen.Foreman,Foreman

Conduct pre-task talk on hazards and precautions required. Ensure full time presence of competent Supervision. Access and egress

Involved workers

3

4

Provide safe and seccured access ladder.Ladder should

12

Lack of Emergency rescue arrangements

Keep ready emergency rescue equipments such as tripod stand with p ulling equipmen ts. En sure Self-containe d b rea thing apparatus available.

Involved workers

4

4

Worker going inside should wear safety harness which shall be attached with the lifeline /pulling rope of rescue pulling equipment. The life line shall be hold by hole-watch and use for signalling between him and the worker inside manhole. Hole watch person trained on emergency rescue should keep watch outside. Maintain personnel Entry- Exit log. Self-contained breathing apparatus to be kept ready in place.

16

Establish a system for communication / signalling b etween the Through the established signal, the safe condition of the worker inside ma nhole shou ld be ch ecked and ensured at f re quent intervals by the hole watch and supervisor The worker can convey his status to hole watch thru' lifeline. *ALARP - As Low As Reasonably Practicable

Reviewed by: Mr. Radi Shunnar ( Operations Manager)

Assessed by: Aaron Aaloosi 1/2/2014 Date:

:

Signature : 1 2 3 4

Date:

Likelihood / Remote / Unlikely / Likely /

Severity / Minor / Major / Severe /

Frequent /

Fatality /


:

Signature:

:

Likelihood

:

:

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Page 3 of 6


Ref No:

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06/CGC/HSE/ RA/29

REV. 0

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:


Activity SR #

:


Who Might be Harmed


/

Lamination Works Assigning untrained workers to inside deep work inside confined manholes. (contd..) space.(inside manhole) Lack of air flow / ventilation inside the manhole

:

Worker going inside manhole. W orker inside manhole

Substandard mounting / unsafe condition of air blower, air compressor and air-hose

d o o h i l e k i L

Safety precautions needed to control the Risk to ALARP * g k i n s t i R a R

4

4

16

3

4

12

3

4

12

"

Only workers trained for working inside confined spaces and on using of self contained / air-supplied breathing apparatus shall to work inside th e manhole. Explain him the hazards and to giv e signal to hole watch on suffering any abnormality. Keep Open the the nearest manholes at upstream and down stream of the manhole in which work is to be done. Provide Air supply through the upstream / down stream manholes using air blowers. Provide air supply into the bottom of working manhole at normal pressure, if sufficient air circulation is not available. Air-blowers and air-compressor should be kept on level surfaces and safe distance away from the edges of manhole.


d o o h i l e k i L

Responsible Person g k i n s t i R a R

Site Engineer, Gen.Foreman,Foreman

3

1

3

2

1

2

Site Engineer, Gen.Foreman,Foreman.

3

1

3

Site Engineer, Gen.Foreman.Foreman.

2

1

2

Ensure safe operating condition of air compressor and blower.Ensure whip arrestor at air hose end connection Air hose line inserted into bottom of manhole should be secured well.It should not obstruct the manhole entrance. Air supply into manhole is to be provided at a minor/normal pressure only, monitored thru' control valve referring pressure guage by an assigned person.

Lack of lighting inside manholePoor visibilty to do work , Injuries

worker inside manhole

3

4

Provide enough light inside the manhole using intrinsically safe / spark proof lighting at 24 volt.The lighting should be well fixed inside manhole aga inst undesire d hanging / mov ement and interference with worker.

12



Assessed by: Aaron Aaloosi (HSE Manager) Date: 1/2/2014 Signature : 1 2 3 4

Likelihood / Remote / Unlikely / Likely / Frequent /

Reviewed by : Mr. Radi Shunnar ( Operations Manager) Date:

:

Signature:

:

Severity / Minor / Major / Severe / Fatality /


Likelihood

: : :

4

3

2

1

4

16

12

8

4

3

12

9

6

3

2

8

6

4

2

1

4

3

2

1

Page 4 of 6


Ref No:

:

06/CGC/HSE/ RA/29

REV. 0

:


:


Activity SR #

:


Who Might be Harmed


/

Lamination Works inside deep manholes. (contd..)

:

Possibility of accumulation of W orker inside v apours of Epoxy Venyl Este r manhole Resin and Polyster Resin while applying them on manhole internal surfaces.

4

Using breath ing app aratus to work inside manhole.

4

d o o h i l e k i L

3


12

"

Use exhaust blowers to evacuate the vapour that may accumulate inside manhole while applying mortar and paint.


d o o h i l e k i L


3

1

3

Site Engineer, Gen.Foreman,Foreman..

3

1

3

Site Engineer, Gen.Foreman,Foreman..

Take gas test frequently to ensure safe conditions inside. Ensure rotation of workers to minimise duration of exposure.

Involved workers

4

If accumulation of epoxy vapour observed during work , the worker should be called out immediately. Resume work only after ensuring full evacuation of vapour and ensuring safe conditions by taking gas test. Work using breathing apparatus should be done only if it is a must to complete the initiated task due to technical reasons. Duration of work using self contained breathing apparatus should be limited to 20% less than than the time prescribed for using the air cylinder by the supplier. Ensure the worker is well- trained on using breathing apparatus. Safe condition of the worker should be ensured frequently by hole- watch through the signalling system (thru' lifeline) established between the hole watch and the worker inside. Rescue equipments ( Tripod stand with pulley / lifting equipment) should be kept ready with the life line attached to it to lift / rescue the person in case of emergency. Competent supervisor and persons trained on rescue operation should be present on site during the work.

16


Assessed by: Aaron Aaloosi (HSE Manager) : 1/2/2014 Date Signature : 1 2 3 4

Signature:

:

Likelihood /

Severity /

Remote / Unlikely / Likely /

Minor / Major / Severe /

Frequent /


:

Fatality /


Likelihood

: : :

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Ref No:

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06/CGC/HSE/ RA/29

REV. 0

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:


Activity SR #

:


Who Might be Harmed


/

3

4

Working inside manhole (contd..)

Continuos work inside by a single worker - Fatigue,Heat stress etc.

Power supply for lighting inside manhole and water pump.

Substandard mounting of Generator on site / it's Unsafe condition - Interruption of lighting inside manhole / power supply, overturning of generator, damages, Injuries.

Grinding works to Generation of spark / fore inside abrade the surfaces manhole for lamination Unsafe grinder machine

:

Workers who work inside manhole

d o o h i l e k i L


"


d o o h i l e k i L


3

4

12

Prov ide rotation b etween traine d worke rs to wo rk inside the manhole;so that they get intervals for rest,coming out to open air to cool down their body and to breathe fresh air . Ensure washing water and drinking water at work place Ensure generator is mounted on level ground at safe distance from manhole entrance,safe and secured cables, spark proof switches. Use industrial connectors.

2

1

2

Involved workers

3

4

12

Cable to man hole should be f ixed with clamp so that it will not interfere with workers manhole entrance and inside. Ensure presence of electrician at work location to ensure interrupted lighting inside manhole and electrical safety.

2

1

2


Involved workers

4

4

16

3

1

3


Involved workers

3

4

12

1

1

1

Gen.Foreman, Foreman

1

1

1


Grinding work shall be done thru' hotwork permit only. Take gas test and ensure no flammable gases present inside the manhole. Check whether grinding shall be replaced with abrading using rough emery paper. Ensure the grinder have safety guard, proper grinding wheels.


Evacuate dust from manhole by exhaust blower. Dust emission, Heat stress

Involved workers

3

4

Ensure the worker use dust mask, safety googles, face cover, helmet,disposable cover all, helmet and safety shoes.

12

Rotate workers to prevent continuos exposure to dust / stress *ALARP - As Low As Reasonably Practicable Assessed by: Aaron Aaloosi (HSE Manager)

Date: Signature :

Signature:

:

Likelihood /

Severity /

1

Remote /

Minor /

2

Unlikely / Likely / Frequent /

Major / Severe / Fatality /

3 4


:

1/2/2014


Likelihood

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Risk Assessment - In-situ Lamination in Manhole Systems

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