JOB SAFETY ANALYSIS JSA FOR HVAC EQUIPMENT INSTALLATION
LIST OF ACTIVITIES |
POTENTIAL HAZARDS |
HAZARDS CONTROL |
Planning | • Unplanned Execution | 1.1 All necessary materials, tools, equipment and certifications or documents must be identified, prepared and provided prior execution and as required by each activities (e.g., 3 party Certifications, etc.) 1.2 Work permits must be prepared and completed before each conduct of activities. 1.3 Tool box talk meeting discussing all related hazards, risk and control measures as per this document must be done 1.4 Proper coordination with the Client and other subcontractors must be done according (work interface). |
Mobilization | • Vehicle poor conditions • Over speeding • Improper vehicle parking |
2.1 Only Drivers with SAG valid license is allowed to drive transport vehicle. 2.2 Ensure that the vehicle is properly maintained, inspected and in good condition. 2.3 Drivers shall abide all the traffic regulations and Client traffic requirements at all limes and worn by all occupants. 2.4 Drivers shall not exceed the posted speed limits 2.5 Ensure that the vehicle is appropriate, adequate and sufficient as per the type of elements lo be loaded. 2.6 Seat belts must be properly working and vehicles must have a portable first aid kit and fire extinguisher. |
Lifting and Rigging Activity / Forklift operation (heavy materials and equipments) |
• Incompetent crane and rigging operation • Unsecured attachments • Uneven grounds • Poor condition equipments • Damage rigging equipments • Obstructed access ways • Over speeding • Unstable and over loading • Limited visuals (Forklift reversing) • Carbon Monoxide |
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Scaffolding Erection / Use / & Alteration Dismantling |
• Incomplete/unstable scaffold members • Inadequate fall protection system • Overloading • Defective and inadequate planking • Unsafe Access • Uneven ground and footings • Scattered tools, material & debris above platform • Electrical Power lines and energized equipment • Falling Objects |
4.1 Scaffold erection to be undertaken by trained and certified scaffolders working under supervision of Certified Scaffolding Supervisor and approved by an Aramco Certified Scaffolding Inspector if height is above 6 meters. 4.3 Inspection and tagging must be conducted prior to usage of any scaffolding.4.4 Fall protection system must be provided. Top rail, Mid-rail and Toe boards must be in place and Personal Fall Arrest System (PFAS) attached to a secured anchorage point must be use by workers 1.8m above the ground. Anchorage point must be able to withstand 5,000 pounds of force applied outward or downward.4.5 Ensure that the scaffolding is able to withstand 4 times the maximum intended load it will carry4.6 Any gap of 2 feet elevation from ground to access ladder of scaffolding, a step stool or equivalent means must be provided 4.7 Working platform and access must always be maintained free of debris and tripping hazards 4.8 Ensure caster wheels are of heavy duty type and locks engaged when in use 4.9 If contact to overhead energized power lines are inevitable, coordinate with the power supplier and request for shutdown and apply the Lock Out Tag Out as per the Daewoo Procedures. |
• High Weather temperature • Heat Stress |
4.18 All workers prone to heat stress must be properly informed I oriented about factors that contribute to the illness that it will cause as well as the control measures to prevent it 4.19 Environmental conditions must be monitored (e.g., air temp. relative humidity) and communicated to all expose employees 4.20 Sufficient number and spaced shaded resting shelters must be provided for workers. 4.11 must be located not exceeding 100m (330ft) away from personnel working or exposed to direct sunlight or direct open brazing flames. 4.21 Provide sufficient number of local ventilation (e.g., industrial fans or portable air movers. 4.22 Portable blowers with built-in air chillers shall be used as needed (e.g., when confined spaces and enclosed work areas have ambient temp. exceeding 43°C) to provide cooling for confined spaces and similar enclosed work areas 4.23 Work scheduling could be consider to conduct the activities in the cooler times of the day, especially durino the month of Ramadan if it falls on summer 4.24 Sufficient amount of cooled drinking water must be provided to the workers. And must be located not exceeding 1 00m (330ft) away from personnel working or exposed to direct sunlight or direct brazing open flames. Workers must be encouraged to drink plenty of water. 4.25 Workers highly prone to heat stress (Brazers) shall be allowed additional break time and water as they deem necessary for their health. 4.26 Personal Monitoring and Buddy System must be implemented. No hot work activity shall be done by an employee in solo or alone. 4.27 Proper PPE must be use (e.g,, light colored, light weight, breathable clothing). Use of FRC are required for Brazers, in this case, Safety Personnel assigned together with the supervisor and brazing workers may assess and provide mitigation plans in reducing the high probability of heat stress to occur. Wetted clothing or towels could also be put into consideration. 4.28 Employees must undergo heat stress training. |
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Manual Installations 5. 1 Liffing and carrying |
• Heavy loads, improper repetition and awkward positioning. • Ergonomics Hazard • High temperature and humidity • Low visibility inside buildings/facilities |
5.1.1 Prevent awkward positioning such as overreaching & tilting by providing adequate working platform. 5.1.2 Wherever possible, a reduction in the amount of heavy manual handling must be sought by providing adequate mechanical means (e.g., jacks, hand trucks, rollers, wheelbarrows, etc.,)5.1.3 Ensure sufficient ventilation and illumination by providing industrial fans and additional. lightings complying electrical safety procedures. (minimum requirements of 50 lux -general construction area lighting, 100 lux -general construction plant and shops (e.g. mechanical and electrical equipment rooms, 30 lux accessways)5.1.4 Wear aloves when handling any materials or objects. Where an object requires two or more employees to handle it, one employee should give the direction for lifting and lowering the object in unison. 5.1.5 All lifting devices shall be kept in good condition. Do not exceed the capacity of any lifting device. Do not move a suspended load over the head of an employee. Riding on a suspended load is prohibited. 5.1.6 Buddy System must be implemented 5.1.7 Ensure clear access. 5.1.8 Get a good footing and never try to lift anything, which considered too heavy or too bulky. 5.1.9 Place the feet about shoulder width apart in a comfortable, balanced position, close to the load being lifted. 5.1.10 Bend the knees and grasp the load. 5.1.11 Keep back straight – not vertical but straight. It should not be arched or bent. 5.1.12 Take a firm hold on the load with the palms of the hands NOT just the fingers. Use gloves to protectagainst any sharp protruding objects. 5.1.13 Keep back as straight as possible, tucking chin in to lock spine. 5.1.14 Lift gradually by straightening the legs – let the strong thigh muscles do the work — not the lower back muscles. 5.1.15 Do not twist the body or turn one of your feet when lifting. If you have to change direction, turn with both of your feet, not your body. |
• Falling Objects | 5.1.21 Working above a platform must ensure the installation of toe boards. 5.1.22 Ensure that working area is properly barricaded especially the drop zone 5.1.23 Hoisting of materials to be lifted supported by another personnel 5.1.24 Activity should be done by sufficient number of manpower 5.1.25 Activity must fully attended by the supervisor. |
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• Personnel Fall from heights •Improper or use of defective ladders and working platform |
5.1.26 Ensure that the elevated working platform complies with the fall protection system and in good condition 5.1.27 Guard rails must be complete and secured clamped 5.1.28 Primary and secondary fall protection system must be properly installed 5.1.30 Ladders must be properly inspected, in good condition and use according to its design. 5.1.31 Straight Ladders use for access must extend 3 feet (1m) to the landing surface, tied and secured to the structure or the bottom part by assigning a worker to hold the ladder while it is in use. 5.1.32 Maintain 3 points contact. 5.1.33 No overreaching, maintain the belt buckle inside the side railings of the ladders to keep in balance. |
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5.2 Installation / switches, panel programming. fixing of disconnect DOC |
Electrical Shock Fire Personnel injury • • • |
5.4.1 Electrical personnel must undergo the energy isolation & permit to work orientation and LOTO training.5.4.2 Adhere with current applicable project procedure (LOTO, Commissioning, etc.) and associated PTW system. 5.4.3 Follow the electrical testing / programming project method of statement and risk assessment. 5.4.4 Only trained and experienced technician / electrician must carry out the electrical test / programming. 5.4.5 Electrical test I programming activity must be supervised closely by the designated electrical engineer / supervisor. 5.4.6 Applicable PTW lo be completed and discussed with the workforce in line with the toolbox talks before the task begins. 5.4.7 A readily useable CO2 portable fire extinguisher (20 kg.) capacity shall be deployed in the area.5.4.8 Signs and barricades shall be erected in the test area to avoid unauthorized entry. 5.4.9 Ensure that the tools to be use is properly inspected and tagged prior lo use. Tools with damage or frayed wiring must not be allowed to use and must be removed from the worksite. Repair can only be done by an authorized person with expertise lo electrical works |
Use of Hand and Power Tools | • Defective or damage tools • Damage insulation / wiring • Unguarded parts • Use of incompatible detachable tool parts to an equipment • Improper usage as per design |
6.1 Power tools must be properly guarded. 6.2 Work area must be free from the accumulation of flammable/combustible materials. 6.3 Avoid executing the activity in awkward position. 6.4 Ensure proper distance away from other workers in doing the job. 6.5 Isolate the area by pulling barriers and prevent other workers to come near the activity.6.6 Place warning signs as precaution lo other workers. 6.7 Only experienced workers will be allowed lo use the power tools. 6.8 Use the correct tool, size and type for the job. 6.9 Check the equipment technical data specification to know its limitations and comply accordingly. Use the equipment only to where iT was designed for. Never use any tools not compatible to the design of the equipment as per specification.6.10 Store tools securely when not in use. Don’t leave hand tools lying around to cause a hazard or be damaged Return to store where necessary. |
• Falling tools/ objects. | 6.11 Work area must be property isolated with barricade and warning signs. 6.12 Hand tools to be use in elevation must be with tag line attached to the personnel working. 6.13 Cutting and chipping works must be done downside before installing above works. |
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6.1 Fabrication Works – Cutting, drilling, grinding & threading |
• Rotating part of a machine. • Poor cutting ability of cutting tool. • Unsecured attachment of cutting tool. • Use of incompatible detachable cutting tool. • Frayed wiring. • Sharp edges. • Inhalable and penetrable metal dust. • Ignition sparks. |
6.1.2 Ensure that the worker to deal with the power tools is knowledgeable and/or has enough experience to do the job. 6.1.3 Designate one or two person in doing the activity. They will be the authorized person to handle the job. 6.1.4 Provide safety /raining to the worker/s in charge of the activity. 6.1.5 Ensure Machine Safeguarding and proper usage of GFCI or machine is double insulated. 6.1.6 AIl power tools must be inspected and tagged with monthly color coding and must regularly check prior to use. 6.1.7 Power tools should be equipped with ‘dead man switch’ and free of damages 6.1.8 Trained Fire Watch Man should be in place as the activity is going on. 6.1.9 All flammable and combustible materials must be removed from the work area. 6.1.10 Designate one working area for the Hot Work Activity, must be covered with fire blanket and with fire extinguisher always in place. 6.1.11 Do not conduct hot work activity near any energized operating mechanisms. 6.1.12 Switch Off and unplug all power tools when not in use.6.1.13 Ensure that there is proper access way in the work area. 6.1.14 Ensure that the drill bits to be use are well sharpened and in good condition. It is prohibited to use the cutting disks as a grinding agent to sharpen the drill bits, use proper grinding machine. 6.1.15 Secure the attachment of drill bits to the machine; use only the drill chuck key in tightening. 6.1.16 Ensure that the material to be drilled is secured and not wiggling. 6.1.17 Detachable cutting tools such as grinding/cutting discs & drill bits must be properly secured in the machine, use only compatible cutting discs as per the equipment’s technical data specifications. 6.1.18 Pinch points such as sharp edges must remove or covered and must be located in an area where exposure is minimal Use appropriate mandatory PPE including safety glass with face shield, ear plugs, and masks, properly 6.1.19 fitted and non-slippery properly fit gloves. |
Painting (on site material cutting) |
• Chemicals | 7.1 Provide and comply as per MSDS requirements 7.2 Hazard explained and discussed in TBT prior working 7.3 Containers properly labeled and stored in proper chemical storage area.6.15 Use proper PPE. |
Housekeeping | • Accumulated waste materials • Pinch Points Sharp and pointed objects |
8.1 Identify sharp and hazardous materials to the wastes prior collecting. Do not use bare hand in cleaning 8.2 Ensure tools and equipment used from the tasks have been removed and stored properly. 8.4 Ensure area is clean and safe 6.1.20 Wear proper personal protection equipment. |