Risk Assessment for Chilled Water Piping Installation & Testing

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level Load/pipe fall during lifting and transportation operation Minor injury Fatal accident Lost time accident (LTA) Property damage Personal injury Property damage death 4 5 20 H  Ensure third party training for workforce such as operator rigger, banksman etc. and third-party certification of crane/equipment and lifting tackles.  All pipes must be tightened and lowered securely as per safe procedure,  All pipes must be stacked properly and secured to avoid skidding.  Appropriate use of PPE must be worn.  Follow approved lifting plan and PTW before start to work  Prior pre task briefing to the worker  Lifting equipment/devices must be in good working condition and must be inspected before use.  Don’t stand under suspended load  Contractor shall take all precautionary measures to protect his employees, properties, adjacent buildings and utilities during the lifting operation.  Emergency team and vehicle must be at site  Barricade area and display signs during lifting Ensure provision of information, instruction, training and supervision 4 1 4 M Manual Handling Works  Lifting heavy loads Lifting awkward loads  Twisting while lifting  Poor underfoot conditions  Chronic injury  Disability  Severe back pain  Muscle strain 4 4 16 H  Plan to eliminate the need to manually lift.  Review the task, the individual’s capability, the load itself and the working environment.  Can the load be split into smaller ones?  Check environment for space constraints, uneven, untidy ground, 3 1 3 L

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level  Top heavy bending Previous back problems Fall of object  Being struck Previous condition. and variation in work, surfaces/height, poor lighting and extremes of temperature/humidity.  Check environment for space constraints, uneven, untidy, or slippery floors/ground, variation in work surfaces/height, poor  Check individual’s strength limits / physical disabilities.  Ensure adequate rest periods/recovery periods are followed between lifts/activities.  Use gloves that offer adequate protection and aid grip.  Proper lifting techniques will be followed: - Position in front of the load with legs balanced and spread equal to shoulder width. - Bend the knees to reach the bottom of the load to get a grip; do not bend the spine. - Lift load slowly by gradually straightening the legs.  Do not twist spine if you need to change direction; turn - Whole body instead.  Carry the load as close to your body and as high as your waist. Confined Space Entry if required Excess or lack of oxygen; - Presence of Toxic gases; -Ingress of water or other substances; - Explosion due to build- up of gases; - Sudden flow of water into excavation; - Restricted emergency  Death  Accident / Incident  Reputatio nal  Environm ental  Occupati onal 4 4 16 H  Permit to be issued & gas monitoring undertaken if required before works commence;(O2 level 19.5%-21% and H2s less than 10 ppm)  Adequate air circulation by blowers/extract fan if required & lighting to be maintained in work areas to 100 lux;  Equipment which may release excess oxygen or carbon monoxide gases shall not be used in confined space areas without adequate extraction;  Local weather forecast should be noted to watch for heavy rains which may cause flooding;  Special consideration to be given to any hot works or work 4 1 4 M

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level evacuation; - Poor access and Egress using toxic substances inside a confined space;  Materials to be stored well away from confined space area;  Top man to be appointed at the entry of the confined space area as required;  workers should be physically fit and competent to enter and undertake work in confined spaces;  Access and egress ladders/steps to be secured, or steps dug into soil, suitably supported;  All workers must be third party qualified prior to starting confined space works Use of chemical for insulation and cladding Inhalation Corrosive Irritant flammable  Skin burn  Eye irritation  Respirato ry problem  Skin allergy Soil contaminated 4 3 12 M  All employees correctly handle the chemicals as per manufacturing instruction.  MSDS must be present and communicated to all workers  Proper tag & label should provide with all chemicals  Storage of chemicals should at designated storage area  Spill kit installed  Appropriate use of PPE must be worn all time.  Empty chemical drums containers should be dump at hazardous area only  Sufficient firefighting equipment should be at storage area  Expired chemicals should be disposed by licensed party  Chemical should not be the directly sunlight Use chemicals awareness training to be given to all employees 3 1 3 L Pressure testing of piping work  If Permit to Work and JSEA not completed  Personal Injury 4 4 16 H  Pressure Testing permits to be completed, unique number added and recorded in log; 4 1 4 M

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Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level  Failure of pressure testing equipment – injury from flying material;  Failure of valves, connections or pipework – injury from flying material;  Use of untrained persons;  Over pressurization of pipework resulting in equipment failure;  Access and Egress into pit;  Accident / Incident  Reputatio nal  Permit/JSEA/ with supervisor in area;  PTW to be in area, detailing specific test to be undertaken;  Personnel must be competent for the task;  Pressure testing equipment must be designed correctly, with all connections, fittings, gauges, pipework etc. all in correct working condition;  Workers undertaking pressure testing must be competent and supervised;  Area to be cleared of all workers not associated with the task;  Warning signage to be implemented;  Access to be adequate, suitable stairs or ladders;  Pressure to be brought up slowly and controlled;  Pressure release to be controlled;  Appropriate use of PPE. Welding activities  Use of untrained personnel;  Risk of manual handling injuries while transporting equipment;  Risk of burns from contact with hot parts;  Personal Injury  Accident / Incident  Reputatio nal 4 4 16 H  Ensure personnel trained and certificated in the use of the equipment;  Test certificates available and in-date; equipment tagged;  All guards to be in place;  Caution to be used when used inside excavations, PTW in place;  All gases to be vented and levels checked with gas meter before welding works takes place;  Where practicable mechanical lift to be used to transport the 1 4 M

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level  Risk of injury due to incorrect welding of joint resulting in injury during lifting  Fire risk  Risk of injury through poor maintenance of welder;  Risk of eye injury; equipment at all times;  Appropriate use of PPE must be worn.  Fire fighting equipment along with fire blanket must be in place and in good condition  Ensure correct pipe alignment to avoid failure of joint with injury potential during lifting;  PTW to be implemented prior to start the welding activities.  Ensure well time is correct to avoid joint failure;  Eye and face protection (face shield) to be worn at all times;  Proper housekeeping to be maintained and area to be barricaded properly.  Fire attendant must stay for 30 mints after completing the work for fire hazards in the area.  Close monitoring and supervision required.  TBT /pre start briefing for the operative must be given prior to start the activities at site. Use of electrical hand tools (General, grinders, drills etc.)  Vibration white finger injury to operators;  Excessive Noise;  Use of damaged equipment;  Excessive Dust;  Flying material;  Use of electrical tools  Personal Injury  Accident /Incident  Reputational  Occupational 3 12 9 H  Operators to be briefed by supervision regarding the safe use of equipment, followed up by regular Tool Box Talks;  Ear protection to be used at all times by operator and those assessed necessary by noise assessment;  Dust masks to be worn by all workers in area;  Eye protection related to the type of equipment used to be issued  All equipment to be inspected and tagged safe to use, damaged equipment removed from service and quarantined immediately; 3 1 3 L

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level 110v; Use of untrained staff;  Workers to be rotated to reduce ‘trigger time’;  All electrical tools should be within test date and be inspected prior to use by a competent person for damaged cables, sockets, connections etc. If damaged the tool should be removed from service and quarantined; Electrical tools should not be used in the vicinity of water if at all possible All power tools must be guarded as per standards for safe operation. Hot weather working (all exposed areas, as applicable)  Worker ill health due to:  Heat exhaustion,  Heat stroke; Heat Stress.  Death  Accident /Incident  Reputational 4 4 16 H  Workers instructed regarding working in the heat and signs of heat exhaustion etc.;  Recovery cool rooms established on site;  Cool welfare areas established in all locations;  Cool fresh water and electrolyte supplements to be maintained in all areas; Summer hour working timings will be adhered to. 3 1 3 L Failure to undertake Correct Housekeeping measures  Slip or trip risk;  Airborne waste around site;  Risk to health and rodent infestation from food waste;  Risk of fire from combustible materials; Personnel injury Property damage Cut/ fire Environmental impact 3 4 12 H  Implemented and monitored housekeeping regime;  Daily clear up of waste materials in designated skips removed by licensed contractor;  Pest control measures as required;  Fire extinguishers in area at all times;  Proper stacking of material on designated area  Awareness programme to the workforce regarding good H/K. 3 1 3 L Use Of Mobile Scaffold Scaffolding collapse/ Personnel Injury 4 4 16 H  Podium type scaffold/ladder shall be used if the 4 1 4 M

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Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level toppling Fall of person Fall of materials / objects from scaffold Lack of scaffold system Lack of scaffold inspection Use of incomplete or damaged scaffold Use of non-standard or mixed component scaffolds Fatality Property damage activity is carried at below 3 m height  Double width mobile scaffolding shall be used up to 6m height, and the following precautions shall be ensured.  The towers must be erected by 3rd party certified scaffold  Scaffold to be inspected by 3rd party certified inspector and green tag in place if safe to use and red tag in place if not safe to use.  Scaffold to be certified prior to use and every 7 days thereafter or after adverse weather conditions  The mobile tower must be placed on stable and even surfaces.  Castor wheel locks to be functional and locked prior to use.  The height of the mobile tower to be restricted to 3.5 times the minimum base width while working inside the building and 3 times while working outside the building  Outriggers to be used wherever height ratio is more than mentioned above ratio limit  Hand tools to be tied by using rope if required  Never sit and stand on the guardrails of the mobile towers  Ensure the travel route of mobile tower is free from

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level obstructions (Material stacking, Path holes, overhead services and service openings)  Ensure tower is empty (man and material) while moving the tower from one location to another  Move the tower manually by applying force on the base. Do not use machinery to push or pull the tower.  The platform capacity should be checked and Safe Working Load (SWL) of platform should be maintained  No modification should be done on the platform to accommodate more man or materials  No loose materials should be kept on the platforms  Visual Inspection to be completed on all scaffold systems on a daily basis.  Ensure the power cables are not tied to the scaffold parts.  All persons working at height to have 100% fall protection at all times  Inspected, in date safety harness to be issued and worn. (Operatives to visual check harness for damage before use).  Always climb scaffold from the inside using ladder provided.  Always close trap door when working on platforms.  Always ensure top rail, mid rail and toe boards in place.

Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 ACTIVITY HAZARD CONSEQUENCE Risk Classification CONTROL MEASURES Residual Risk Severity Probability Risk Rating Risk Level Severity Probability Risk Rating Risk Level  Never alter, erect or assemble scaffold if not trained to do so.  Never use any damaged components in scaffold system PREPARED BY REVIEWED and APPROVED BY NAME Amir uddin (Safety Officer) Prateesh Parakash (PM) SIGNAURE Signature: DATE 14.08.2022 Date: 14.08.2022 RISK GRADING MATRIX PROBABILITY SEVERITY Insignificant (1) Minor (2) Moderate (3) Major (4) Catastrophic (5) Rare (1) 1 2 3 4 5 Possible (2) 2 4 6 8 10 Likely (3) 3 6 9 12 15 Often (4) 4 8 12 16 20 Frequent/Almost 5 10 15 20 25 15 - 25 Extreme Risk Absolutely Unacceptably High Activity or process should not proceed in current form

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Client: PRESIDENTIAL GUARD COMMAND. PMahwi Project Title: Presidential guard Command Works- Abu Dhabi Contractor: Electron Building Contractor Supervisor: Document Title: Risk Assessment For installation &testing of chilled water piping Revision No: 00 8 - 12 High Risk Unacceptably High Activity or process should be modified to include remedial planning and action and be subject to detailed EHS risk assessment 4 – 6 Moderate Risk Acceptable but must be managed at “As Low As Reasonably Practicable” (ALARP) Activity or process can operate subject to management and / or modification 1 -3 Low Risk Acceptable without required further action No action required unless escalation of risk is possible

Risk Assessment - installation and testing of chilled water piping

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