risk assessment for tank base

Hazard/ Aspect Identification, Risk/ Impact Assessment and Risk /Impact ControlFor water tank base construction

Project:-

Activity: Excavation & Backfilling

Sl NO Hazard Cause of Hazard Consequences/Impact Risk Evaluation(Before)

Risk Level Recommended Control Measures Risk Evaluation

(After)

Risk Level

H

S

P S (H,M,L)

H

S

P S (H,M,L)

1 Damage of Underground utilities

Not following the procedures Not locating the underground utilities Exposed underground utilities not

support properly. In attention known hazards Strike with machinery/ hand tools Not using cable detector as per

drawing Trial pits

Suspension of work Property Damage Penalties from local

authorities Fire and explosion

3 4 H NOC and permits will be obtained from TRANSCO, ADDC, ADCO and GASCO.

All the area of excavation to be marked and underground utilities to be located and marked by means of drawings from the clients/ property owner, detectors to be used.

Exposed underground utilities to be supported properly and marked.

Tool Box Talk will be carried out for the people and operators on the topic hazards involved in excavation and underground utilities and importance of protecting it.

Close supervision will maintain while exposing the underground utilities or working in near exposed utilities.

2 1 L

2 Collapse of trench Improper shoring/ slopping Movement of machineries Improper Access/ egress Keeping materials at the edge of

excavated trenches

Injury Property Damage

3 4 H Shoring/ sloping will be done for the excavated trench considering the soil condition.

Hard barricades will be provided 1.5 mtr away from the edge of excavated trenches.

All the materials using for construction will kept away from the edge of excavation.

Proper access ladders will be provided.

2 1 L

3 Toppling machinery Uneven ground Over speed of machinery Unauthorized operation of machinery Incompetent person

Property Damage Serious Injury 3 4 H

Competent persons with use driving license and experience will be assigned operation of the machineries.

Uneven grounds will be compacted and levelled.

The machinery speed will be controlled by regular monitoring of machinery and disciplinary action for violators.

2 1 L


Project:-

E E

4 Fall of materials Unprotected edge Keeping excavated materials at the

edge In attention to known hazards

Near miss Injury Property damage

2 3 M Excavated edge will be protected by providing hard barricades and warning signs.

Excavated materials will be removed immediately.

Tool box Talk will be carried out prior to start work stating the hazards and control measures exist in excavation, fall of material.

2 1 L

5 Fall of persons Lack of hand rails Lack of warning signs Lack of inspection

Injury Fracture Public

2 3 M Hard barrications will be installed and maintained. Hand rails will be maintained if the excavation

depth increases.

Pre work and regular inspections will be carried out by the foreman and safety officer.

After finish of work security personnel will be assigned to avoid trespassing/unauthorized entry at night.

2 1 L

6 Dust / Noise / vibration Machinery Health illness / hearing loss / white finger

H 2 2 M Ear plug / muff / defender to be used Mask to be used Exposure time PPE to be worn

H 2 1 L

Activity: Lifting Operation



(After)

Risk Level

H

P S (H,M,L)

M

P S (H,M,L)

1 Crane toppling

Dropping of load

Swinging load

Adjacent work

Faulty Equipment

Damaged lifting gears

Failure of lifting tackles.

Uneven or soft ground.

Outriggers rest on soft/loose soil without load distribution plate./ outriggers not extended

Unbalanced load (improper slinging)

Load contacting the live equipment during lifting operation

Use of uncertified or incorrect lifting tools and tackles

Cuts, bruise, abrasions Fatality, damage to

equipment Serious Injury Fatality Property damage

2 3

H PTW Control Competent operator Method statement , TRA Lifting gears to be certified and colour coded

according to ADCO – GASCO / ADDC standards. Planned lifting Firm and even ground Crane should be positioned horizontally (wooden

supports under the outriggers to be provided) Barricade around lifting radius and limited the

access only to essential personnel. Use approved 3rd party certified crane / Hiab, /

Operator, Riggers & lifting tools & tackles. All lifting gears or equipment shall be inspected

2 2 M


Project:-

High wind speed

Personnel under suspended load

Incompetent rigger

Improper maintenance

prior to each lift. Crane safe working load clearly marked on the

crane. Ensure Centre of Gravity (balancing) of load while

slinging (Trained rigger). Use tag lines at both ends to control the load

from swinging. Close supervision to monitor someone not

standing underneath or pass through the suspended load.

Wind speed shall be monitored (Suspend operation if wind speed exceeds 17 knots)

Activity: Manual Handling of steel and other material Sl NO Hazard Cause of Hazard Consequences/Impact Risk Evaluation

(Before)Risk Level Recommended Control Measures Risk

Evaluation(After)

Risk Level

H

P S (H,M,L)

L

P S (H,M,L)

1 Slip, Trip or Fall

Stress, strain

Steel bars

Improper manual lifting techniques

Lifting of heavy weight.

Sharp edges

Personal injury

Upper limb pain and discomfort

Cut, bruises and injury

2 2 M Approved Method statement Approved TRA Trained workers Proper lifting techniques to be used. If weigh is heavy, used two instead of one person Proper PPE to be worn during operation Take care persons passing nearby, standby and

working

2 1 L

Activity: Concreting



(After)

Risk Level

S

P S (H,M,L)

L

P S (H,M,L)

1 Machine operation Dust Vibration

Rotating parts of the machine not guarded.

In competent operator Dusty environment (Inhalation of dust)

Injury to personnel. Health hazards

2 2 M PTW Control Competent operator Method statement , RA All rotating parts of the machine should be in

place. Avoid long time exposure to dust / vibration Employ a minimum handgrip to observe less

vibration.

2 1 L

Machine operation (mixer machine)

Rotating parts of the machines Loose clothing

Personnel injury Skin irritation H 2 2 M

EPTW Control Method statement & TRA

L 2 1 L


Project:-

Cement dust Chemical

Inhalation of dust Chemical exposure

Occupational disease (Breathing disorder)

Environmental impact

Loose clothing should not be worn whilst doing the machine operation.

Keep unauthorized personnel away from the operation.

Rotate the workers to minimize long time exposure by an individual to dust.

Dust mask to be used. Use of MSDS To assigned area for cleaning mixer chute Contaminated concrete to be removed according

to the procedure

Traffic control of concrete equipments

Moving equipments Fatality Injury Property damage

S 2 2 M Route of equipment to be assigned Designated parting for mixers Competent banks man to be assigned Warning light to provided Signboard to kept

L 2 1 L

P- Probability ,S- Severity, H-Health,S- Safety, E- Environment.

risk assessment for tank base

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