1. SOGAT 2012 The Shah Gas Development Project
CONFIDENTIAL
Saturday, 01 April 2017
SOGAT 2012
The Shah Gas Development Project
A Lifecycle Approach to the HSEIA Process
Abu Dhabi Gas Development Co.

2. HSE Impact Assessment What is an HSEIA & Its Importance
CONFIDENTIAL
HSE Impact Assessment What is an HSEIA & Its Importance
Saturday, 01 April 2017
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)
HSEIA and an Operators HSEMS are mutually exclusive….
Abu Dhabi Gas Development Co.

3. A Lifecycle Approach to the HSEIA Process Introduction to the Approach
CONFIDENTIAL
A Lifecycle Approach to the HSEIA Process Introduction to the Approach
Saturday, 01 April 2017
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
Abu Dhabi Gas Development Co.

4. CONFIDENTIAL
A Lifecycle Approach to the HSEIA Process How it is Different from Traditional HSEIA Approaches
Saturday, 01 April 2017
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 Co.

5. CONFIDENTIAL
A Lifecycle Approach to the HSEIA Process How it is Different from Traditional HSEIA Approaches
Saturday, 01 April 2017
The following slides contain diagrams and process flows for the following:
ADNOC HSEIA report process (slide 6)
Overview of the Al Hosn Gas lifecycle HSEIA approach developed for the Phase II SGD Programme – well operations and well testing (slide 7)
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)
Abu Dhabi Gas Development Co.

6. CONFIDENTIAL
A Lifecycle Approach to the HSEIA Process Traditional ADNOC HSEIA Report Components
Saturday, 01 April 2017
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
Identify and assess material Risk
Mitigate risk to ALARP
Provide control measures and monitoring
Environmental Impact Statement
COMAH Report
OHRA Report
Manage medium/low risk through Operator’s HSE Management System
Abu Dhabi Gas Development Co.

7. CONFIDENTIAL
Al Hosn Gas Lifecycle HSEIA Approach SGD Phase II – Drilling, Well Testing & Cleanup Phase
Saturday, 01 April 2017 8 1
Gates Review
Well Testing & Handover
Project Initiation & Control 2 7
MAH & HSECES Identification
Evergreen Process
Quality Management
Gates Review 3 6
HSE Critical Positions & Tasks
Drilling Operations
Gates Review 4 5
Detailed Well & Well Test Design & Engineering
Procurement, Inspection & Testing
Abu Dhabi Gas Development Co.

8. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
Project Initiation & Control 1
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)
1.1 The first step of the project is inception, and in this stage we make sure that we establish and adhere to all ADNOC Standards and Guidelines. Identify all the design codes for equipment and systems.
1.2 During this stage we must also ensure that we have management of change system in place such that a change in design requirements goes through the proper review, approval and documentation process.
Abu Dhabi Gas Development Co.

9. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
MAH & HSECES Identification 2
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
Standard Hazards, Effects & Aspects Register format used by Company and Contractors
2.3
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
Bowtie Analysis
2.1 Identify the HSE risk associated with the project “drilling, well testing, stimulation & clean-up”
2.2 Evaluate and assess the Hazards using risk assessment to highlight HSE Critical Equipment and Systems (methods such as BOWTies, EIA Studies, & OHRAs)
2.3 Putting in place barriers to mitigate Major Hazards
2.4 Assigning Responsible people to manage HSE Critical Equipment and Systems
2.4
HSECES Identification
HSECES are identified and confirmed by discipline technical authorities during bowtie analysis workshops.
Controlled HSECES Register
Abu Dhabi Gas Development Co.

10. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
HSE Critical Positions & Tasks 3
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 Co.

11. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
Detailed Well & Well Test Design & Engineering 4
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
This is the stage where detail design of well operations are undertaken.
In this step it is critical to assess and document the quality plans, design codes and standards, ADNOC HSE Guidelines against for which the detail design has been conducted.
This is done by conducting value engineering, design reviews as well as independent verification processes for identified HSECES (Christmas Trees, BOP, Certification of H2S equipment)
It is important to realize during this stage of the detail design any additional hazards that may arise will have to thru steps 2-4.
Its is an iterative process.
4.5
Design & Development Validation
Independent Verification Process for HSECES
Abu Dhabi Gas Development Co.

12. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
Procurement, Inspection & Testing 5
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
This is also a critical stage of the HSECES integrity lifecycle. Through the detail design once equipment and systems have been identified the next step is their procurement. Every Critical equipment & system must have design performance standards that are aligned with design details undertaken by Drilling & Sub-surface technical teams during detail design phase.
Equipment must be verified and inspected at site and by third party verification process. In addition, once the equipment arrives at the rig site and before it can be in colloquial parlance “turned on” it has to be testing from a function point of view.
It is also important in this stage to have change control procedures. A good example, is changing the dimensions, or locations of storage warehouse to better fit equipment or chemicals, an appropriate risk must be undertaken as part of the change control procedures.
The main point to make here is to capture all the risk associated with the procurement, inspection and testing of HSECES.
5.4
Inspection & Disposition Reports
Verification of inspection reports
Third Party Inspection monitoring
Change Control procedures
Abu Dhabi Gas Development Co.

13. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
Drilling Operations 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
This part of the integrity lifecycle deals with the drilling operations.
Ensures integrity of drilling and well testing is maintained.
All audits for HSECES are in place prior to mobilization – this would include technical audits to check the functionality of critical equipment.
Its important in the step to have HSE Plan mobilized which includes non-compliance procedures
Abu Dhabi Gas Development Co.

14. SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
Quality Management 7
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
Regular inspection, testing and examination of HSECES again the detailed design
Monthly quality reports
Independent Verification Body (IVB) compliance reports
Abu Dhabi Gas Development Co.

15. Stimulation & Cleanout & Testing
CONFIDENTIAL
Saturday, 01 April 2017
SGD Phase II – Drilling, Well Testing & Cleanup Phase Element
Well Testing & Handover 8
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
Validation of testing contractors QA/QC via ADNOC standards & audit
Competence assurance
8.4
Nitrogen purging of service lines
Permit to work compliance
Well start up procedure
Endorsed well handover document
Handover
Abu Dhabi Gas Development Co.

16. A Lifecycle Approach to the HSEIA Process The Benefits
CONFIDENTIAL
A Lifecycle Approach to the HSEIA Process The Benefits
Saturday, 01 April 2017
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 multi-package/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 Co.