Introduction
This workflow is a good practice guidance to Engineering Managers and supporting personnel for the delivery of technical integrity. It is an ‘aide-memoir’ that highlights the key deliverables and activities throughout the lifecycle of a typical FEED project.
FEED is broken into six phases:
Phase 1: Scope Definition and Engineering Execution Strategy
Phase 2: Commencement of FEED Design
Phase 3: Initial FEED Development and Hazard Identification
Phase 4: Initial Design Review & Audit
Phase 5: FEED Design Approval (AFD)
Phase 6: Final Reviews and Feed Report Compilation
The workflow shown in the follow Road Map illustrates the execution sequence on a generic FEED Project. The vertical columns show activities that can be undertaken concurrently whilst the sequential flow of work is across the Road Map. As the deliverables and activities in each phase are completed, work can transition into the next phase.
Situations will arise when work will need to be be done out of sequence, typically to meet a demanding project schedule. Use of the workflow allows the risks of out-of-sequence working to be identified and the necessary mitigation strategies to be put in place.
HBP’s corporate governance and assurance of Engineering will measure compliance with the workflow and ensure out-of-phase working is being identified and managed. This document contains a copy of the FEED Road Map and includes detailed descriptions of the activities, the key engineering disciplines and supporting documentation.
Phase 1: Scope Definition and Engineering Execution Strategy
Preparation for commencement of detail design. To evaluate FEED deliverables to ensure engineering is sufficiently mature for detail design to progress in a controlled and minimal change environment. To confirm Engineering Execution Plan.
| Activities / Deliverables | Description | Supporting Documentation | |
| 1 | Engineering Execution Plan & Engineering Organisation Chart | Create Engineering Execution Plan complete with key supporting documents / information. | |
| 2 | Preparation/Validation of Conceptual Study Report/BoD | Confirm maturity of Conceptual Design report. Identify any areas of concern and ensure these are captured on the Technical Risk Register. | |
| 3 | Project Baseline Standards | Establish which codes, standards and specifications are to be utilised, e.g.. Corporate, project, client, and confirm procedure. Include in Engineering Execution Plan and/or Discipline Job Design Specifications. | Engineering Baseline Standards, Document No. (DOCUMENT CODE) |
| 4 | Engineering Audit Schedule | Create formal schedule to identify when technical integrity audits, design reviews, HAZIDS, HAZOPS, etc are to be carried out. Align to Level 3 Engineering Plan and include in Engineering Execution Plan. | Technical Safety Events Schedule (Lead Technical Safety Engineer) |
| 5 | Technical Risk Register | Create formal Technical Risk Register identifying all possible risks associated with the engineering design. | |
| 6 | Integrated Engineering Systems | Agree engineering design tools to be used and confirm that system hardware, software and support is available. Include issues such as PDMS or PDS, Cats and Specs, survey methods, dimensional control techniques, etc. Document and record in the Engineering Execution Plan and discipline job design specifications. | Engineering Systems Project Start-up Manual, Document No. (DOCUMENT CODE) |
| 7 | QRA & FRA Strategy | Establish status of project Quantitative Risk Assessment (QRA), Fire Risk Assessment (FRA) and Emergency Escape & Rescue Assessment (EERA) information and confirm methodology for timely delivery into engineering design process. Agree accountability for delivery, e.g.. Client, 3rd party, HBP, and record in Engineering Execution Plan. | Hazard Management Philosophy, (DOCUMENT CODE): Hazard & Risk Management, (DOCUMENT CODE) |
| 8 | Discipline Job Design Specification | Define the key project specific design parameters and operational constraints that are applicable to the appropriate discipline for the detailed design of the project. To identify key individuals , roles and responsibilities, design tools, key codes and standards, etc. | |
| 9 | Level 3 Engineering Plan | Agree work breakdown structure, develop CTRs and create level 3 integrated engineering plan covering all disciplines. To be included in Engineering Execution Plan. | |
| 10 | Confirm CE Compliance Strategy | Review and confirm strategy for CE Compliance. Ensure discipline Lead Engineers are aware of their responsibilities and appropriate resources / measures are in place. | Corporate CE Compliance Strategy (DOCUMENT CODE); Project Compliance with Pressure Equipment Regulations (DOCUMENT CODE); Pressure Equipment Regulations Guidelines (DOCUMENT CODE); ATEX Guidelines, (DOCUMENT CODE); Machinery Directive Guidelines, (DOCUMENT CODE); Electromatic Compatibility Regulations Guidelines, (DOCUMENT CODE); MC, The Electrical Equipment (Safety) Regulations Guidelines, (DOCUMENT CODE). |
| 11 | Prepare Interface Register | Develop interface register to ensure all interfaces are identified and managed. | The Electrical Equipment (Safety) Regulations Guidelines No: (DOCUMENT CODE) |
Phase 2: Commencement of FEED Design
To formally kick off the Engineering Design Process in accordance with the project execution plan and to ensure that key engineering strategies / philosophies are in place.
| Activities / Deliverables | Description | Supporting Documentation | |
| 1 | Safety Critical Systems/Elements and Performance Standards | Confirm safety critical systems / elements and set appropriate performance standards. i.e. functionality, reliability and survivability. | Hazard Management Philosophy, (DOCUMENT CODE); Hazard & Risk Management, (DOCUMENT CODE); Design Verification Activities (under DCR), (DOCUMENT CODE); Platform Safety Case. |
| 2 | Document Distribution Matrix | Create formal document distribution matrix to ensure all disciplines & departments receive all necessary design information in a timely manner. | |
| 3 | Structural Integrity Interface | Ensure structural integrity interfaces are identified & visible to Project, e.g. HBP / Client focal points, Technical Authorities, Independent Verification Bodies, etc. | |
| 4 | Material Selection Report | Report defining the requirements and specifications of necessary material. | HBP Corporate Material Engineering Specifications. |
| 5 | Hazard Management Plan | Create Hazard Management Plan identifying all key hazards, technical safety activities and the approach to managing Major Accident Hazards (MAH) in the design. | Hazard & Risk Management, (DOCUMENT CODE); Management of Functional Safety Guideline (DOCUMENT CODE) |
| 6 | Piping Specifications | Develop / confirm baseline piping specifications, utilising HBP Corporate specifications where possible. | HBP Corporate Piping Specifications. |
| 7 | PDMS Catalogues | Ensure PDMS catalogues are populated & available for all affected disciplines, utilising HBP Corporate data, i.e. CPC, where possible. | |
| 8 | CMSS Philosophy | The purpose of this task is to define and prepare the assurance activities to be undertaken aligned with the project categorisation. | Develop Control Monitoring and Safety Systems (CMSS) Philosophy covering key instrumentation and control systems e.g. Process Control System (PCS), Emergency Shutdown System (ESD) and Fire and Gas (F&G). |
Phase 3: Initial Design Development and Hazard Identification
To develop initial design deliverables to Inter Discipline Review (IDC) stage and identify key hazards.
| Activities / Deliverables | Description | Key Discipline | Supporting Documentation | |
| 1 | HAZID | Perform hazard identification studies, as identified on Engineering Audit Schedule / Technical Safety Events Schedule. | Technical Safety | Project Hazard Identification (HAZID) (DOCUMENT CODE); Engineering & Design Reviews, (DOCUMENT CODE). |
| 2 | ENVID | Formal assessment of environmental aspects associated with a modification or a change, and to propose prevention or mitigating measures. | Technical Safety | Environmental Impact Identification (ENVID) (DOCUMENT CODE); Engineering & Design Reviews, (DOCUMENT CODE). |
| 3 | PFD IDC | Issue Process Flow Diagrams (PFD’s) on formal Inter-Discipline Review (IDC). | Process | |
| 4 | Shutdown & Blowdown Philosophy | Explains the measures to shutdown safely and control blowdown and how this will be achieved. | Process | |
| 5 | P&ID’s IDC | Issue Piping & Instrumentation Diagrams (P&ID’s) on formal Inter-Discipline Review (IDC). | Process | |
| 6 | Plot Plans / Layouts IDC | Issue equipment Plot Plans / Layouts on formal inter-Discipline Review (IDC). | Piping and Layouts | |
| 7 | HIPPS Review | Initial review to establish requirements for a High Integrity Pressure Protection System. | Instruments | Management of Functional Safety, (DOCUMENT CODE) |
| 8 | Dropped Object Study | Identify and assess the potential risks to drilling, production, process equipment, and manned areas from dropped or swinging objects. Where the consequence of a dropped object is considered significant, to propose prevention or mitigating measures. | Technical Safety | |
| 9 | Mechanical Handling Strategy | Develop Mechanical Handling Strategy including general approach / constraints, platform crane limits, installation philosophy, operation and maintenance, etc. | Mechanical and Structural | |
| 10 | Particular Materia Appraisals (PMA) | Where required, i.e. where Corporate PMA’s or EAM’s are not suitable, develop new PMA’s and obtain approval from Notified Bodies (NoBo’s. | PED Focal Point | |
| 11 | C&E IDC | Issue Cause & Effects for formal Inter-Discipline Review (IDC). | Process and Instruments | |
| 12 | Hazardous Area Layouts IDC | Issue Hazardous Area Layouts for formal Inter-Discipline Review (IDC). | Technical Safety | |
| 13 | Fire Risk Assessment (FRA) | Determines Fire & Explosion scenarios and identifies requirements for prevention, control and mitigation measures. | Technical Safety | |
| 14 | Blast Design Philosophy | Develop philosophy that assesses potential explosion hazards and identifies appropriate blast loadings to be applied to the engineering design process, e.g.. Vessels, pipe supports, structural steel, etc. | Technical Safety | |
| 15 | TR Impairment Study | Assessment of the vulnerability of a Temporary Refuge and demonstration of its capability to sustain life for a specified duration when under attack by fire, explosion and toxic gases. | Technical Safety | Fire Hazards Assessment, Blast Assessment, Dispersion Assessment, Emergency, Escape and Rescue Assessment, Heat Stess Assessment |
| 16 | Equipment List & Data Sheets | Create master project equipment list identifying all major items of tagged equipment, e.g. vessels, pumps, motors, generators, hydrocycolnes, chemical injection packages, electrical switchgear, control panels, etc. | Mechanical | |
| 17 | Emergency Escape & Rescue Assessment (EERA) | To identify requirements for emergency escape & rescue, e.g. lifeboats, escape routes, plant layout, etc. | Technical Safety | |
| 18 | PFP / AFP Philosophy | Develop philosophy that identifies requirements for Passive Fire Protection (PFP) and/or Active Fire Protection (AFP). | Technical Safety | |
| 19 | Power System Analysis | Check power system capacities for increase power requirements for new equipment (Brownfield). | Electrical | |
| 20 | Preliminary Weight Report | Prepare preliminary Weight report. | Structural |
Phase 4: Initial Design Review and Audit
To confirm that the initial design development is robust.
| Activities / Deliverables | Description | Key Discipline | Supporting Documentation | |
| 1 | Hazardous Area Review | Formal Engineering discipline review of hazardous area layouts to confirm requirements for the correct selection and location of equipment. | Technical Safety | Hazard and Risk Management Procedure (DOCUMENT CODE); Engineering & Design reviews, (DOCUMENT CODE) |
| 2 | P&ID Review | Formal Engineering discipline review of P&ID’s to confirm design basis. | Process, Piping, Technical Safety, Instruments | |
| 3 | Plot Plans / Layout / 3-D Model Review | Formal Engineering review of Plot Plans / Layouts. The review shall ensure that the layout design complies with the required technical, safety, operability and maintainability standards. Makes sure the layout is cost effective, ensures the constructability of the work and agrees the layout basis on which the detailed design can proceed. | Piping and Layouts, Structural, Mechanical, Electrical, Technical Safety, Process | Engineering & Design Reviews, (DOCUMENT CODE) |
| 4 | C&E Review | Formal review of Cause & Effects diagrams to confirm design basis and alignment with Hazard Management Plan. | Instruments, Process, Technical Safety | Hazard and Risk Management Procedure (DOCUMENT CODE); Engineering & Design reviews, (DOCUMENT CODE); Management of Functional Safety Guideline (DOCUMENT CODE) |
| 5 | Technical Audit | Obtain confirmation, by sampling of project documentation, that the engineering of the project is to the required standard and free from errors. | Independent (Corporate Engineering) | Technical Audit Procedure (DOCUMENT CODE) |
Phase 5: FEED Design Approval (AFD)
To ‘Freeze’ the Process design, and develop dependent design & procurement activities.
| Activities / Deliverables | Description | Key Discipline | Supporting Documentation | |
| 1 | Final Design review | Demonstartion that all of the design and review activities relevant to achieving design integrity have been performed. | Technical Safety | Final Design Review – (DOCUMENT CODE) |
| 2 | PUWER Assessments | Conduct initial PUWER assessment typically by review of PDMS model and/or vendor / equipment supplier information received to date. | Technical Safety, Mechanical | Engineering & Design Reviews, (DOCUMENT CODE) |
| 3 | HAZOP | Hazard and Operability Studies, a systematic multi-discipline study based on the applications of guidewords to identify causes of potential hazards and operability constraints in a facility. | Process, Technical Safety | Dependent on Project updated P&ID’s and C&E’s may be prepared from commented IDC’s from Phase 3 Formal HAZOP, (DOCUMENT CODE); Engineering & Design Reviews, (DOCUMENT CODE) – Note: additional HAZOP’s may be required, i.e. earlier or later in the project. PEM to consult with Process & Technical Safety Lead Engineers. |
| 4 | BAT Report | The Final report which analyses the major environmental issues that have been considered as part of the process to select the final option from the various alternatives considered. Thus preventing, or eliminating, or where the alternatives are not practicable, to then limit or reduce environmental impacts associated with the selected option. | Technical Safety | Procedure for Selection of Best Available Techniques (BAT) Procedure No: (DOCUMENT CODE) |
| 5 | Constructability Review | Conduct formal Constructability Reviews to ensure safe and efficient installation of plant & equipment. | Affected disciplines + Construction / Implementation Group | Engineering & Design Reviews, (DOCUMENT CODE) |
| 6 | P&ID AFD | Issue Approved For Design (AFD) Process and Instrumentation Diagrams. | Process | |
| 7 | C&E AFD | Issue Approved For Design (AFD) Cause & Effects. | Instruments | |
| 8 | Process Data Sheets AFD | Issue Approved For Design (AFD) Process Data Sheets. | Process | |
| 9 | HP / LP Interface Listing | Identify all HP / LP interfaces on formal register and ensure that all have been addressed satisfactorily via HAZOP’s and / or individual reviews. | Process | |
| 10 | Holds Register | Develop register to record & manage post AFD design holds. | Engineering Manager | |
| 11 | SIL Assessments | Conduct assessment to determine target Safety Integrity Level (SIL). Note: Where the target SIL is 3, then it is likely that a High Integrity Pressure Protection System (HIPPS) will be required. If the value is found to be 1 or 2, then a HIPPS will not be required. | Instruments | Management of Functional Safety, (DOCUMENT CODE) |
| 12 | HIPPS Study | Conduct study to formally identify the performance requirements of the High Integrity Pressure Protection System (HIPPS) and demonstrate that it is robust. Should include dynamic study for a range of transient conditions. | Process | Management of Functional Safety, (DOCUMENT CODE) |
| 13 | Qualitative Risk Assessment (QRA) | Multi-disciplinary study of hazards, the likeihood of their occurrence and potential consequences in terms of harm to people and the environment. | Technical Safety | Fire Hazards Assessment, Blast Assessment, Dispersion Assessment, Emergency, Escape and Rescue Assessment, Heat Stess Assessment |
| 14 | HIPPS Reliability Study | Conduct study to formally demonstrate that the High Integrity Pressure Protection System (HIPPS) complies with the reliability & availability criteria for the Project, e.g. as stipulated in the performance standards. | Instruments | Management of Functional Safety, (DOCUMENT CODE) |
| 15 | Flow Assurance | Conduct flow assurance studies to demonstrate the process design under a range of flow conditions, i.e. start-up to 100%. | Process | |
| 16 | EDAS Stage Gate Reviews | Demonstrate adherence to the EDAS Task Performance Crite-ria appropriate for Project Category. | Engineering Management | |
| 17 | Technical Peer Review | Demonstrate adherence to the EDAS Task Performance Criteria appropriate for the Project Category and to ensure that engineering personnel are aware of EDAS requirements and adequately explain how those requirements are being fulfilled. | Engineering Management |
Phase 6: Final Reviews and FEED Report Compilation
To ensure all final design deliverables are completed and that client and statutory obligations are satisfactorily resolved.
| Activities / Deliverables | Description | Key Discipline | Supporting Documentation | |
| 1 | FEED Report | Collate all discipline inputs and finalise study report. | Project Management | All Discipline Reports and discipline drawings etc. |