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NO
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ACTIVITY
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POTENTIAL
HAZARDS
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RISK
RATING
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PREVENTIVE
MEASURES
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RESIDUAL
RISK
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RESPONSIBLE
PERSON
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01
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Prepare work area and material arrangement for the job.
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· Untrained crew
· Equipment failure
· Slips, Trips and Fall Hazards
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M
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·
All personnel shall be undergone for Contractor Safety induction and
required necessary training prior to enter revamping area
·
All employees shall be aware of the emergency evacuation plan
and also shall be familiar that how to react in an emergency. Location of
assembly point areas emergency number
·
Specific work permit shall be obtained prior to start the
activity.
·
JSA shall be well communicated with all involved workers prior
to start the task.
·
All workers shall wear appropriate P.P.E as per the
recommendation by safety department.
·
TSA shall be at the jobsite with all required information.
·
Only skilled workers shall be allowed to perform the activity.
·
All access ways shall be properly identify and maintained in
good condition.
·
Assigned permanent housekeeper to arrange the material before
and after the job.
·
All tools shall be kept in approved storage area.
·
Barricade with appropriate signage shall be provided.
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L
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Task Supervisor/ PTWR
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02
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Visual and mechanical inspection of HVAC equipment.
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· Slip /Trip
· Fall and falling hazards
· hand injury
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M
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·
Task supervisor shall ensure conduct pre assessment and
mitigation of the area before start the task.
·
Any work above 1.8 meters elevating platform shall be required
to use full body harness with 100% Tie off.
·
Full body harness and sufficient anchorage point to ensure the
100% tie off at all times. Un-inspected scaffold shall not be used.
·
Personnel shall wear proper appropriate PPE at the task.
·
Appropriate tools shall be used at the task and observe proper
positioning.
·
Provision of suitable communication devices to Maintenance crew such as bravo or radio.
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L
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Task Supervisor
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03
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Work at Height
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·
Defective ladder
·
Slip, trip,
·
Fall from height
·
(Falling objects
and Personnel)
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M
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·
Competent and qualified person do the task.
·
Competent supervision must oversee the task at all
times.
·
Industrial “A” Type
FRP Ladder shall be used for energized Substations. Any work
above 1.8 meters elevating platform shall be required to use full body
harness with 100% Tie off.
·
Full body harness and sufficient anchorage point to
ensure the 100% tie off at all times. Un-inspected scaffold shall not be
used.
·
Appropriate scaffolding in accordance with client
standards shall be provided and inspected by approved scaffolding inspector
prior to use.
·
Scaffolding tagging shall be strictly implemented.
·
During climbing on ladders makes sure 3 point
contact.
·
Ladders shall be used with temporary works only .
·
Avoid simultaneous operations on different elevation on
the same location
·
Task supervisor shall ensure all tools and equipment are
suitable to the task.
·
Warning sign or barricade shall be installed from any
energized area, panel and equipment prior from the start of work.
·
Task supervisor shall ensure housekeeping conducted
prior and after the task.
·
Materials and tools shall be kept on designated storage
area.
·
Temporary lighting shall be provided on the identified
low illuminated location.
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L
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Task Supervisor
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|||||
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04
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Maintenance, Trouble Shoot and Testing of HVAC Equipment
s (Air Cooled Condensing Unit; Air Handling Unit; Chemical Filter Unit ,Electric Duct Heater;
Duct Humidifier;; Exhaust Fan; HCP Panel; Split A/c Unit; Fan Coil Unit and
HVAC Equipment accessories using hand and
Power tools.
|
·
Hand injury
·
Damaged tools
·
Tripping
hazards
·
Falling Hazards
·
Personnel
Injury
·
Dust inhalation
·
Intense noise
·
Poor
Illumination
·
Face injury
·
Fire hazards
·
Electric shock
·
Damaged cables
·
Physical
injuries due to rotating component.
·
Fume, flame, fire
·
Cut, burn
·
Poor
Housekeeping
|
M
|
·
Before start the job the work permit shall be obtained and tools
box talk shall be conducted by the supervisors to make sure that the safety
message has been delivered to all workers.
·
Before commencing the job, a short meeting shall be held
regarding the preparation of work area with Vendor Contractor and Contractor
management shall arrange walk-through to identify the hazards that can be
exposed while commence the testing activity.
·
Prior to start of HVAC Maintenance works precede all necessary lockout
and Tag out procedure by Company.
·
All tools shall be color coded by the competent person and it
shall be make sure that the tools are safe for use.
·
All power tools should be 110V and provided with GFCI, Power
source shall be inspected by competent person, provided with grounding system
and properly earthed.
·
All workers shall wear the hand gloves during cleaning of Air
& Water filters.
·
The approved type of hand gloves shall be provided to prevent
hand injury.
·
All workers involve in the activity shall wear approved type of
dust mask during Air filter Cleaning.
·
The electric & Control cables shall be inspected by the
competent A/C Technician to make sure that all cables are in good condition
HVAC System..
·
Sufficient lighting shall be provided along the working area.
·
All HVAC equipment
shall at all times be in good condition and proper inspection being conducted
prior to testing the HVAC equipment.
·
The area safety officer shall monitor the working area during
work activities.
·
Vendor, Competent and Qualified Person only shall perform the
Maintenance & trouble Shooting and testing tasks.
·
HVAC Supervisor must oversee the task at all times.
·
All workers shall aware about TSA & JSA.
·
Before start the Maintenance, Trouble Shoot & testing of
HVAC Equipment job, prior information shall be given to the Company safety.
·
Suitable communication equipment must be provided among testing
crew.
·
Safety clear glass shall
be worn by the employees while working inside the A/C Plant Room.
·
Do not touch any existing electrical devices or push buttons.
·
Follow the instructions
and suggestions of operation teams.
·
Prior to starting the HVAC Equipment Vendor or Competent person
shall ensure that no leakage is found in the refrigerant piping system.
·
If find leak to arrest the leak by Brazing welding.
·
Fire watchman shall be standby with fire extinguisher at all the
time during hot work & until 30
minutes completion of work.
·
Vacuum testing shall be conducted if leakage is found in the
refrigerant pipe system.
·
Always check Pressure and Add Refrigerant Gas to the HVAC system
through Calibrated Manifold Pressure Gauge.
·
All devices (motorized fire damper, temperature sensors,
pressure transmitters and Equipment Start/Stop & Status) from the HVAC Control
Panel must be checked by competent person.
·
If replace the AHU or CFU motors of HVAC Equipment shall be
conducted and performed for 4 hours at no load condition.
·
All combustible material shall be removed from inside the
Control panel and Blower section of Air Handing Unit.
·
Obtained Company Standard must be followed and recorded
during testing procedures.
·
HVAC Equipment Cleaning & Dry out filter will be within the
HVAC Yards.
·
SSA shall adhered to client emergency response and reporting procedure.
|
M
|
Task Supervisor /PTWR
|
|||||
|
05
|
Cleaning of AHU/CFU/FCU filters
Replacing of damage fan belt
Additional charging of refrigerant
gas
Cleaning of condenser coils
Electrical troubleshooting for HVAC
equipments
|
·
Hand injury
·
Personnel
Injury
·
Fire hazards
·
Electric shock
·
Gas Charging
|
M
|
·
Before start the job the work permit shall be obtained and tool
box talk shall be conducted by the supervisors to make sure that the safety
message has been delivered to all workers
·
Vendor, Competent and
Qualified Person only shall perform the job
·
Prior to start of HVAC Maintenance works precede all necessary lockout
and Tag out procedure by Company.
·
All tools shall be color coded by the competent person and it
shall be make sure that the tools are safe for use.
·
All workers shall wear the hand gloves and dusk mask during
cleaning of filters and condenser coils
·
All workers involve in the activity shall wear approved PPE.
·
If there is damage fan belt, equipment shall be lockout tag out,
and continue by replacing by new fan belt.
·
Check the suction and discharge pressure of the refrigerant gas
through ACCU pressure gauges. If it less than the range additional charging
shall be done to the HVAC system through compound manifold pressure gauge and
refrigerant cylinder.
Equipment shall be running to attain the desired
pressure.
·
If equipment found not working due to electrical problems like
burn out contactors, relays not working, tripping of units and HVAC controls
malfunctioning damaged parts shall be replaced by competent person.
|
M
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Task Supervisor /PTWR
|
|||||
|
06
|
END OF WORK
|
· Poor housekeeping
· Sharp scraps
· Ceiling openings
· Open permits
|
L
|
·
All access ways shall be properly identify and maintained in
good condition.
·
Task supervisor shall ensure housekeeping conducted prior and
after the task.
·
Materials and tools shall be kept on designated storage area.
·
Regular housekeeping shall be conducted before, during
and after the work.
·
All materials at working area shall be properly organize
and access way shall be determine and free from any obstruction.
·
.If not required permit shall be closed.
|
L
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Task Supervisor
|
|||||
Saturday, 28 August 2010
PREVENTIVE MAINTENANCE OF HVAC EQUIPMENTS.
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