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SOGAT 2012 The Shah Gas Development Project A Lifecycle Approach to the HSEIA Process

Abu Dhabi Gas Development Company Ltd.

CONFIDENTIAL

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HSE Impact Assessment What is an HSEIA & Its Importance •

An HSEIA is systematic approach to evaluating the potential effect of a project on health, safety and the environment

•

A living document that considers the full lifecycle of the project (FEED, EPC, Operations, Decommissioning & Abandonment)

•

ADNOC Requires HSEIAs to be undertaken for all project phases

•

Key function is to identify, assess, mitigate to ALARP and monitor on a continuous basis all material risk that can adversely impact health, safety, and environment

•

Residual impacts and hazards managed by the operator’s HSE Management System (HSEMS)


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A Lifecycle Approach to the HSEIA Process Introduction to the Approach • A streamlined, risk-based and quality-focused methodology based on current industry best practice for HSE Case development • A systematic and gated verification and review process that provides for the management of major accident hazards through the lifecycle of the Shah Gas Development (SGD) Programme • Greater emphasis is placed on HSE Critical Equipment and Systems (HSECES) integrity that provides significant safety and efficiency benefits to the end user • Developed in close cooperation with the ADNOC EHS Division • Demonstrates the safe systems of work and organisation required to effectively identify, manage and maintain risks to a tolerable and As Low As Reasonably Practicable (ALARP) level

• Based on the detailed assessment of the proposed SGD activities and the outputs from HSEIA studies, management plans and procedures


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A Lifecycle Approach to the HSEIA Process How it is Different from Traditional HSEIA Approaches The Al Hosn Gas HSEIA approach is a departure from traditional HSEIAs process in the following ways: • Process based method compared to the traditional prescriptive methodology of HSEIA report development • Is overarching and not limited to providing a ‘snap-shot’ in time of HSE risk i.e. lifecycle philosophy • Systematic and gated verification and review process provide tangible barriers from allowing the development to proceed to the next stage until a strategy to manage HSE risks to ALARP can be put in place • Reduces unnecessary duplication of HSE studies/reviews; and • Reduces the turnaround time for obtaining approvals from ADNOC EHS Division. • Inter-linkages between quality management and procurement thus effectively integrating supply chain logistics in the lifecycle and improving operational efficiency Abu Dhabi Gas Development Company Ltd.

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A Lifecycle Approach to the HSEIA Process How it is Different from Traditional HSEIA Approaches The following slides contain diagrams and process flows for the following: 1. ADNOC HSEIA report process (slide 6) 2. Overview of the Al Hosn Gas lifecycle HSEIA approach developed for the Phase II SGD Programme – well operations and well testing (slide 7) 3. The 8 step elements of the Al Hosn Gas lifecycle HSEIA approach developed for the Phase II SGD Programme – well operations and well testing (slides 8 – 15)


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A Lifecycle Approach to the HSEIA Process Traditional ADNOC HSEIA Report Components ADNOC HSE Impact Assessment Report

ADNOC and SPC as regulator require HSEIA for O&G Projects

Hazard & Effects Register For Risk categories: People, Environment, Assets & Reputation

Environmental Impact Statement

COMAH Report

OHRA Report

• Identify and assess material Risk • Mitigate risk to ALARP • Provide control measures and monitoring Manage medium/low risk through Operator’s HSE Management System Abu Dhabi Gas Development Company Ltd.

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Al Hosn Gas Lifecycle HSEIA Approach SGD Phase II – Drilling, Well Testing & Cleanup Phase 8

1

Project Initiation & Control

Well Testing & Handover

2

Gates Review

7

Evergreen Process

MAH & HSECES Identification 3

Gates Review

6

Drilling Operations

HSE Critical Positions & Tasks Gates Review

Quality Management

4

Detailed Well & Well Test Design & Engineering


5

Procurement, Inspection & Testing

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SGD Phase II – Drilling, Well Testing & Cleanup Phase Project Initiation & Element 1 Control

1.1

Baseline Documentation

Design Codes, Standards and Guidelines established by Drilling Development Division for the Drilling Contractors.

1.2

Change Control in Design


Robust Change Control procedures in place for review, approval & documentation of design changes. Change Management supported by an integrated (Company/Contractor) multi-discipline technical authority community (approved terms of reference)

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SGD Phase II – Drilling, Well Testing & Cleanup Phase MAH & HSECES Element 2 Identification 2.1

HEMP Studies

HAZID/ENVID/OHRA etc., to identify Major Accident Hazards (MAHs) & Initial identification of HSECES. ISO17776 Standard for Hazard Reference Codes with additional hazards identified for Al Hosn Gas

2.2

Risk Registers

2.3

Bowtie Analysis

Standard Hazards, Effects & Aspects Register format used by Company and Contractors

Developed via multi-discipline technical authority community workshops using BowTieXP. Company Bowtie Analysis Standard establishes unique hazard and barrier referencing system that will carry through from design to operations bowties

2.4

HSECES Identification


HSECES are identified and confirmed by discipline technical authorities during bowtie analysis workshops. Controlled HSECES Register

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SGD Phase II – Drilling, Well Testing & Cleanup Phase HSE Critical Element 3 Positions & Tasks

• HSE Critical Positions & Tasks identified for all HSECES for the Drilling & Well Testing Phase. • Unique barrier referencing system facilitates efficient assurance activities i.e., barrier verification audits. Abu Dhabi Gas Development Company Ltd.

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SGD Phase II – Drilling, Well Testing & Cleanup Phase Well & Well Test Element 4 Detailed Design & Engineering 4.1

Well & Well Test Design

Execution plans and assignment of competent resources

4.2

Design Inputs & Outputs

Quality plans, codes/specs/standards and HSE criteria Design programs and calculation sheets

4.3

Well Design & Development Review

Integrated multi-discipline design reviews conducted

4.4

HSE Embedded into Process

Specific safety studies and reviews in line with the HSE plans

4.5

Design & Development Validation Abu Dhabi Gas Development Company Ltd.

Independent Verification Process for HSECES

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SGD Phase II – Drilling, Well Testing & Cleanup Phase Procurement, Element 5 Inspection & Testing 5.1

Purchase Information

HSECES Design Performance Standards Operating Envelope Criteria

5.2

Verification of Purchased Products

HSECES inspection and test plans Independent Verification Process for HSECES

5.3

Inspection & Testing

Inspection and testing plans prior to operation

5.4

Inspection & Disposition Reports


Verification of inspection reports Third Party Inspection monitoring Change Control procedures

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SGD Phase II – Drilling, Well Testing & Cleanup Phase Drilling Operations Element 6 6.1

Testing Well Integrity

Drilling logs. Cement quality and casing integrity testing.

6.2

Validation Processes

Pre-mobilization audits of HSECES. Technical audits to check critical equipment.

6.3

Identification & Traceability


Quality plans Identification procedures Non-conformance procedures

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SGD Phase II – Drilling, Well Testing & Cleanup Phase Quality Element 7 Management 7.1

Measurement

Inspection, testing and examination against design performance standards

7.2

Non-conformance

Non-conformance control procedure Non-conformance reports & follow up

7.3

Analysis


Monthly quality reports Independent Verification Body (IVB) compliance reports

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SGD Phase II – Drilling, Well Testing & Cleanup Phase Well Testing & Element 8 Handover 8.1

Stimulation & Cleanout & Testing

Defined Test Objectives – optimised well test programme Well integrity assurance – standards verification Wellsite HSE management plan (BAT & ALARP principles) Management of change

8.2

Air Quality Flaring Management

Dispersion Modeling Real time data monitoring – model verification

8.3

Operation Validation

8.4

Handover


Validation of testing contractors QA/QC via ADNOC standards & audit Competence assurance

Nitrogen purging of service lines Permit to work compliance Well start up procedure Endorsed well handover document

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A Lifecycle Approach to the HSEIA Process The Benefits • The HSEIA approach provides tangible performance enhancement benefits in the following ways: • A greater focus on MAHs and HSECES integrity thus significantly reducing the overall risk picture; • Greater flexibility for managing HSEIA process associated with multipackage/multi-rig operations thus providing optimum efficiency • Minimizing overall lifecycle costs through procurement of HSECES against approved performance standards i.e., QA/QC of HSECES from day one • Reduction of turnaround in ADNOC/SPC approval process i.e., SGD Program HSEIA Phase II approvals have been achieved approximately 14 days from submittal • The approach is fully integrated with ADNOC & COMPANY HSEMS • The iterative and evergreen nature of the approach provides the opportunity for continuous improvement Abu Dhabi Gas Development Company Ltd.

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