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Risk Assessment December 2011

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Risk Assessment

December 2011

2

Background

As part of the HSEMS, Risk Evaluation and Management is required to identify and assess the hazards that may be eliminated, prevented or controlled.

3

Background

4

Main Purpose

• ADNOC CoPV1-02 HSEIA Requirements requires that an HSEIA Report is developed for each of the following phases:

– Phase 1: Conceptual Design and FEED (Front End Engineering Design)

– Phase 2: Engineering Procurement and Construction (EPC)

– Phase 3: Operation

– Phase 4: Decommissioning/Disposal.

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Risk is assessed according to a tiered process:

Tier 1:

For low risks, a Qualitative Risk Assessment is done using ADNOC’s Risk

Assessment Matrix (RAM). However, high and medium risks are passed on to

a more detailed tier 2 risk assessment.

Tier 2:

Requires a quantitative risk assessment (QRA) which involves through

numerical scoring or engineering calculations. If uncertainty exists when

deciding the level or risk, the higher risk is always considered and medium or

high risks are passed to a more detailed QRA.

HSE Risk Assessment Framework

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The Roadmap for Initiation

• 4 lifecycle phases:– Conceptual design– FEED and detailed design– Operation– Decommissioning

• Risk assessment tools are used for (when is it applied):– New facilities, activities, products and services.– Existing facilities, activities, products and services.– Changes to people, plant and systems.– Decommissioning.– New contracts or renewals of existing contracts.– Potentially hazardous activities or jobs.

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The Roadmap for Initiation

• New facilities, activities, products and services:

– Conceptual Design:

• HAZID

• Tier 1 Risk Assessment (Risk Assessment Matrix)

– Feed & Detailed Design:

• HAZID (update)

• HAZOP

• SIL Assessment

• Tier 2 Risk Assessment (QRA, ERA, HRA, FRA)

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The Roadmap for Initiation

• Existing facilities, activities, products and services.

OperationalOperational

• HAZID• Tier 1 Risk Assessment

e.g. GRA• Tier 2 Risk Assessment

(QRA, ERA, HRA, FRA)

• HAZID• Tier 1 Risk Assessment

e.g. GRA• Tier 2 Risk Assessment

(QRA, ERA, HRA, FRA)

• HAZID (update)• Tier 1 Risk Assessment

e.g. GRA• Tier 2 Risk Assessment

(QRA, ERA, HRA, FRA) (update)

• HAZID (update)• Tier 1 Risk Assessment

e.g. GRA• Tier 2 Risk Assessment

(QRA, ERA, HRA, FRA) (update)

• Identification of Additional activities which should be subject to a PTW system

• TRA

• Identification of Additional activities which should be subject to a PTW system

• TRA

• Application of PTW system in refineries, in order to control the risk associated with planned activities

• TRA required for all tasks covered by PTW

• Application of PTW system in refineries, in order to control the risk associated with planned activities

• TRA required for all tasks covered by PTW

• Tasks covered outside PTW system but are HSE critical

• TRA

• Tasks covered outside PTW system but are HSE critical

• TRA

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The Roadmap for Initiation

• Changes to people, plant and systems– Operational:

• HAZID• HAZOP• SIL Assessment• Tier 1 Risk Assessment e.g. GRA• Tier 2 Risk Assessment (QRA, ERA, HRA, FRA)

• Decommissioning• HAZID• Tier 1 Risk Assessment• Tier 2 Risk Assessment (QRA, ERA, HRA, FRA)

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The Risk Assessment Techniques

HAZID:

– Various meetings carried out with process engineers in the DCS

room.

– Early identification of detailed potential hazards.

– Discussion on potential effects of identified hazards.

– Applied during the early stages of a development.

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Task Risk Assessment (TRA)

Definition:

An accident prevention tool that works by identifying hazards and

eliminating or minimizing them before a job is performed, and before they

have a chance to become accidents.

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When to Conduct a TRA?

As per CP – 25:

TRA is appropriate for any HSE critical task where the hazards need to be

identified, assessed and controlled.

A TRA must be available as a condition of the issuance of a permit to

work. (For more detail refer CP-25, Para 14.4)

As per CP – 21: (Pt. 7.3.1 & 7.3.3)

When the risk assessed is “High” or “Medium”, or where the task/job is

complex, a Task Risk Assessment (TRA) is required.

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When to Conduct a TRA?

As per ADNOC COP-V4-01: Framework of Occupational

Safety Risk Management

TRA is an ideal focus for any tasks that require refresher training and

‘tool-box’ talks before commencing such as:

1.Tasks that are relatively complex

2.Tasks that are carried out infrequently

3.Where there are personnel changes

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Who to Conduct a TRA?

• A team exercise that involves three to five members.

• Team members should have a level of technical competence.

• The composition of a TRA team depends on criticality & complexity

of an individual task being reviewed.

• The selection of team members depends on who will perform the task:

– TRA for the task to be performed by RRD staff

– TRA for the task to be performed by minor /residence contractor

– TRA for the task to be performed by major project contractor

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Who to Conduct a TRA?

TRA for the task to be performed by RRD staff:

• Supervisor from the concerned department or the originator of a

work permit shall lead the team.

• The team will Identify the hazard, consequences, controls, base line

risk, additional controls and residual risk. All to be compiled on TRA

worksheet as per the format given in CP-25.

• A safety engineer may be involved for assistance.

• Review of TRA shall be done by Section Head of originator’s section

and approval shall be done by Manager of originator’s department.

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Who to Conduct a TRA?

TRA for the task to be performed by minor /residence contractor:

•Supervisor from the concerned department or the originator of a work

permit shall prepare the TRA.

•Performer department shall ensure that hazards, risks and control

measures identified during risk assessment and mentioned in TRA sheet

are communicated to contractor’s staff.

•Review of TRA shall be done by Section Head of originator’s section

and approval shall be done by Manager of originator’s department.

•TRA Team members or the safety engineer do not require signing on

TRA sheet.

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Who to Conduct a TRA?

TRA for the task to be performed by major project contractor:

• Working in GREEN FIELD PROJECT AREA

–Controlled by Project Management Consultant (PMC) and Project Coordinator (PC),

TRA shall be performed by EPC contractor/subcontractor.

–TRA team involves representative from EPC, PMC and Contractor who is going to perform

the job/task.

–The contractor shall strictly follow CP 25, and the TRA format used must be in line with

TAKREER’s TRA format.

–TRA prepared by sub-contractor shall be reviewed by EPC. TRA shall be approved by PMC

before commissioning activities in green area.

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Who to Conduct a TRA?

TRA for the task to be performed by major project contractor:

• Working in inside Refinery / Live process plants

–The team involves representative from EPC, PMC and Contractor.

–TRA shall be prepared in consultation with concerned RRD staff to include specific

precautions/controls.

–TRA shall be reviewed by EPC & PMC. It shall also be reviewed by Section Head and

approved by Department Manager of process area where work need to be executed.

–PMC & EPC are responsible to communicate all recommended precautions and controls by

RRD staff and mentioned in TRA sheet shall be communicated to contractor performing the

job. Strict compliance to TRA and PTW shall be ensured for safe execution of the job.

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How to conduct a TRA?

1. Initiate the TRA: what task will be performed?

2. Break down of task: not more than 15 steps should be recorded

3. Identify the hazard: what hazards could be present in each step?

4. Identify the consequences: how could this hazard harm the PEAR?

5. Determine risk: by using RAM review the consequences and

probability, decide severity (S) and Probability (P) to assign the risk (R)

6. Identify the control measures.

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How to conduct a TRA?

7. Determine the residual risk: after applying the measures

8. Implement control measures: take action to ensure implementation

9. Recording of TRA

a) scope

b) time and place of TRA session

c) positions/Qualifications of team members

d) assumptions considered

e) summary of actions

f) Abbreviations used.

10. Review and update of TRA.

THANK YOU