Installation of GRP Pipes

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RISK ASSESSMENT FORM -

Date : 2/23/2015 :Ref No:RA/AK/27 : Project Name :Roads and Infrastructure in Al Kheesa North and East : Assessment location : Balancing tank location on site. : Description of work : Installation of GRP Pipes (concrete surround )in microtunnelling 1200mm dia. Balancing tank excavation :

SR #ActivityHazard / Conditions that could develop hazardWho Might be Harmed Initial RiskSafety precautions needed to control the Risk to ALARP * RESIDUAL RISKResponsible PersonConsequences Likelihood Risk RatingConsequences Likelihood Risk RatingEffect / " 1 Installation of J-bolt manually1) Struck against J-boltInvolved workers, Others in the vicinity4416Refer as built drawing of u/ground utilities in this area. Utilize a underground utility scanner to Identify and mark them before starting excavation works313ConstructionManager, Site Engineer 2) Lifting heavy objectInvolved workers and others in the vicinity4416Select cranes of appropriate capacity. Ensure Third party inspection certificates of cranes and lifting slings and tackles. , License of operator, third party certificates of operators, riggers. Work with valid lifting permit only.313Site Engineer, Foreman 3) Awkward movementInvolved workers 4416Correct manual handling techniques,Use mechanical aids where possible,Maintain control of loads when lifting & moving.212Site Engineer, Foreman 4) Forceful grip of the J-boltInvolved workers4416Provide ramp and safe access for excavation equipment to the excavation operations. Assign a flagman to monitor the movement of the equipment.313Site Engineer, Foreman 2Manual clearing of excavated areaUnsafe manual excavation equipment, unsafe access to bottom of excavation. Involved workers4312Provide ramp with hand rails and cage laddersfor safe access of workers to the bottom of excavation for clearing and levelling of ground. 212Site Engineer, Foreman Untrained worker, Lack of workers for manual work. - Injuries, Fatigue due to continuous manual drilling by single worker.Involved workers3412Ensure inducted and internal trained workers are engaged for manual levelling and clearing of ground. Rotate workers so that single worker shall not do manual work for long time. Ensure the workers take rest one by one. Ensure driking water at work place. Ensure the workers wear leather hand glove, Safety googles, safety shoes, safety helmet and cover all. provide rest area for workers . 212Site Engineer, Foreman

3Working inside Balancing tankConfined space hazards (If the work is to be conducted inside attenuation tank) such as presence of toxic and flammable gases OR lackof oxygen inside the deep attenuation tank.Those who work / go inside attenuation tank4416Ensure safe access into the Balancing tankEnsure enough lighting. 414Site Engineer, Gen.Foreman

Do gas test to detect presence of toxic / flammable gases or lackof oxygen inside the attenuation tank.Safety OfficerIf presence of any toxic / flammable gases are found, Engineering methods to eliminate the gases to be applied by Construction Engineers. - Try to evacuate the gases with exhaust fan; at the same time supply pressurized air into the base of the Balancing tankThis shall be continued till the toxic / flammable gases are fully evacuated.Site Engineer, Gen.Foreman

*ALARP - As Low As Reasonably Practicable

Assessed By:Aaron Aloosi (HSE Manager) :Reviewed by:Engr.Mahir Kakish (Project Construction Director) :Date:2/23/15 :Date:2/23/15 :Signature : :Signature: :

Likelihood / Severity / 1Remote / Minor / 2Unlikely / Major / 3Likely / Severe / 4Frequent / Fatality / Working inside Balancing tank -- CONTINUED Confined space hazards (If the work is to be conducted insideBalancing tank) such as presence of toxic and flammable gases OR lack of oxygen inside the deep balancing tank.Those who go / work inside attenuation tank4416Take gas test again. Do not allow to work till toxic / flammable gases is brought down to zero. 414Safety OfficerIf the oxygen percentage is below 20.9 % , provide air supply at normal pressure into the bottom of theBalancing tankand check whether the oxygen is building upto safe level of 20.9 %. Observe for half hour and If the oxygen content is remaining steady between 18.5 % and 20.9% , work shall be proceeded. Site Engineer, Gen.Foreman. Safety OfficerIf the oxygen % is not remaining steady in a range of 18.5 % - 20.9 %, the workers should use self contained breathing apparatus to work inside the Balancing tankIn such case, one worker should not work insideBalancing tankfor more than 20 minutes, if the Oxygen cylinder is designed to use for 30 minutes. Site Engineer, Gen.Foreman. Safety OfficerAir supplied breathing apparatus (attached with helmet) shall be used only if pure breathable oxygen from a cylinder or special non-lubricating type air compressor with regulating system can be provided. Air supplied from normal compressors contain harmful Carbon Monoxide due to lubricant in it's internal parts. Site Engineer, Gen.Foreman. Safety OfficerEnsure that the workers are trained to use the self contained breathing apparatus and briefed upon the hazards involved.. Site Engineer, Safety Officer*ALARP - As Low As Reasonably PracticableAssessed By: Eng.Enrique Fajardo (HSE Manager) :Reviewed by: Eng.Salameh Haddadin (Project Manager) :Date:2/23/15 :Date:2/23/15 :Signature : :Signature: :Likelihood / Severity / 1Remote / Minor / 2Unlikely / Major / 3Likely / Severe / 4Frequent / Fatality /

HSEF 4.3.1-01-01 Issue: 1 Rev: 2 Issue Date: 20 Mar 2012Page &P of & 4

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