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HIRARC, Hazard Idewntification & Risk Analysis

HAZARD IDENTIFICATION (HIRAC)

7.1 Hazard Identification

The following approaches were used in identifying hazards at work site.

7.1.1 Analyzing the accident investigation records from the previous year. All the accident are tabulated accordingly to the hazards during the period.

7.1.2 Analyzing and studying report on near misses and dangerous occurrences.

7.1.3 Conducting a work site walk through and through survey and visual inspection to observed and note various possible hazards. This include observation during site audit.

7.1.4 Interviewing workers on report of near missed and dangerous occurrences.

7.2 Technique Used To Assess And Evaluate The Risk.

7.2.1 The numbers of accident attributed by various hazards are indicate in table 1. The past incidence over the 1 year and 5 months indicated the likelihood of accident to happen.

7.2.2 In the same table, the severity of injury sustained is indicated as a consequence of accident attributed by hazard.

7.2.3 To assess the risk. Quantitive risk assessment technique was used. The following values were assigned for the risk table:

Likelihood

 

Consequence

 

Very likely

4

Fatality

4

Likely

3

Major injury

3

Unlikely

2

Minor injury

2

Highly unlikely

1

Neglible

1

 

7.2.4 Risk = Likelyhood * Consequence

The higher the value the higher the consequences.

Consequences

Likelihood

 

4

3

2

1

4

16

12

8

4

3

12

9

6

3

2

8

6

4

2

1

4

3

2

1


7.2.5 Based on the quantitive risk assessment technique the risk weight and ranking of hazards is tabulated in table 2.

Number

Hazards

Likelihood

Consequence

Risk weight

Hazard prioritization

1

Struck by falling

objects/materials

4

4

16

1

2

Falling from

height

3

3

9

2

3

Protruding

objects

2

3

6

3

4

Faulty tools and

machines

2

2

4

4

.1

Mosquitoes

3

4

12

1

1

Noise

2

3

6

2

 

Table 2: Risk weight and Ranking of Hazards.

.2.6 Hazard Prioritizi

On evaluation of quantities risk assessment, the risks of hazards in decending order are as following:

Hazards

Risks weight

Struck by falling objects/meterials

16

Falling from heights

9

Entanglement/ tripping of limbs

6

Slip/trip and fall

6

Mosquitoes

12

Noise

2

 

As tabulated in Table 2 the values of likehood and consequence are assigned based on the frequency of-accident attributed by the hazard and severity of the injuries respectively.

For calculation of risk weight, the assign value for likelihood and consequence are multiplied. The higher the value the higher the risk.


7.2.7 Critical hazards and effect on the safety & health of workers.

The most critical hazards that had been identified from the risk assessment is workers struck by falling objects/materials. The incidence of falling objects/materials is the higher and likewise, he risk are also the highest. The following areas were inflicted with injuries, with consequence ranging from serious to neglible injuries.

Head

30%

Hands

10%

Legs

10%

Face

10%

Body

15%

 

7.2.8 Risk Classification.

Probability

1

2

3

4

Low

Severity

 

 

 

 

 

1

1 - Low

2 - Low

3- Medium

4- Medium

Medium

2

2- Low

4 - Medium

6 - Medium

8 - High

Medium

3

3 - Medium

6 - Medium

9 - High

12 - High

High

4

4 - Medium

8 - High

12 - High

16 - High

High

 

Risk Level

Action

Low (1-2)

-No additional controls required. Consideration may be given to a more cost

 

effective or improvement that imposes no additional burden.

 

-Monitoring of effectiveness & adequacy of control methods.

Medium (3-8)

-Effort should be made to reduce the risk, but the ost of prevention should

 

be carefully measured and limited. Risk reduction measures should be

 

implemented within a define period.

 

- Where the moderate risk is associated with extremely harmful

 

consequences, further assessment may be necessary to established more

 

precisely the like hood of harm as a basis for determining the need for

 

improved control measures.

High (9-16)

-Work should not started until the risk has been reduced. Considerable

 

resources may have to be allocated to reduce risk. Where the risk involves

 

work in progress, urgent action should be taken.

 

- It is not possible to reduce the risk even with unlimited resources, work

 

has to remain prohibited.


7.2.9 Quantitive Risk Table

Severity

Likelihood

 

Very likely

Likely

Unlikely

Highly unlikely

Fatality

High

High

High

Medium

Major injuries

High

High

Medium

Medium

Minor injuries

High

Medium

Medium

Low

Negligible

High

Medium

Low

Low

 

7.2.10

Severity

Likelihood

 

 

Year

Monthly

Weekly

Daily

 

 

1

2

3

4

First Aid & Near Missed

1

1

2

3

4

Less than or 4 days MC

2

2

4

3

4

More than 4 days MC

3

3

6

9

12

Fatality & Permanent

Disabilities

4

4

8

12

16

 

Semi — Quantitive Risk Assessment.

1. Determine severity consequences i.e. :

-    4: Fatality & Permanent Disability - 3: More than 4 days MC

- 2: Less than 4 days MC

1: First Aid and near missed accident. (Reference NADOOPOD 2004)

2. Determine Likelihood of Occurrence of Hazards.

4: Daily

3: Weekly

2: Monthly

1: Yearly

(Reference NADOOPOD 200


Qualitive Risk Ranking

Step 1

Assessing Probality (Rating for given assessment).

Detail

 

 

Rating

Yearly

Highly unlikely

Probably never will

1

6 monthly

Unlikely

Rarely

2

Monthly

Likely

Occasionally

3

Daily

Very likely

Frequently

4

 

Step 2

Severity (Rating given for assessment).

Injury/Accident

 

Rating

Fire

Spillage/leakage

First Aid

Near missed

1

No fire & only smoke

Spillage/leak which

 

 

 

 

can be manually

 

 

 

 

controlled.

Minor Injury

No Lost Time

2

Fire which trigger the fire

Spillage/leak with

 

Injury

 

alarm

cause

Major Injury

Permanent

3

Fire which cause using fire

Spillage/ leak which

 

disability &

 

using of fire extinguisher

caused Legislative

 

lost Time

 

 

Non Complience

 

Injury

 

 

 

Fatality

 

4

Fire which caused total

Spillage/leak which

 

 

 

evacuation

caused Total

 

 

 

 

Evacuation

 

Note:

1.      Catagories of hazards: Mechanical, Electrical, Biological, Chemical, Ergonomics, Psycho-social, ect.

2.      Other likelyhood factors to consider: • Number of personnel exposed

• Frequency and duration of exposure to the hazards • Quantity or concentration of materials

• Failure of service

• Failure of plant and machinery components • Exposure to the risk elements

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