6.63 pipeline hazid envid report
TRANSCRIPT
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 1 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Pipeline HAZID/ENVID Report
Table of Contents 1. Introduction ........................................................................................................................................ 2
1.1. Document Purpose and Scope ................................................................................................ 2
1.2. Objective .................................................................................................................................. 2
1.3. Scope ....................................................................................................................................... 3
1.4. Abbreviations ........................................................................................................................... 3
2. Methodology ....................................................................................................................................... 4
2.1. Overview .................................................................................................................................. 4
2.2. HAZID/ENVID Nodes ............................................................................................................... 4
2.3. HAZID/ENVID Process ............................................................................................................ 4
2.4. Reference Materials ................................................................................................................. 5
2.5. Meeting Attendees ................................................................................................................... 5
3. Main Findings and Actions Arising ..................................................................................................... 7
4. Supporting References ...................................................................................................................... 8
Appendix List of Appendices ................................................................................................................... 9
Appendix A: HAZID/ENVID Guidewords ............................................................................................... 10
Appendix B: Completed HAZID/ENVID Worksheets ............................................................................ 14
Table of Tables Table 2.1 List of HAZID/ENVID Reference Materials ............................................................................. 5 Table 2.2 List of HAZID/ENVID Attendees ............................................................................................. 6 Table 3.1 HAZID/ENVID Actions ............................................................................................................ 7
Table of Figures Figure 1-1: Outline System Schematic ................................................................................................... 2
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 2 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
1. Introduction
1.1. Document Purpose and Scope E.ON UK has commissioned Genesis Oil and Gas Consultants Ltd. (GOGC) to perform the pre Front End Engineering Design (FEED) for the pipeline and offshore facility associated with the E.ON Kingsnorth Carbon Capture and Storage (CCS) development project. An outline system schematic of the development is presented in Figure 1-1.
Figure 1-1: Outline System Schematic
As required by both E.ON UK and GOGC risk management processes, the potential hazards associated with the system require identification by a hazard and environmental identification (HAZID/ENVID) process.
This document details the output from a HAZID/ENVID meeting that took place on the 20th
October 2010 at GOGC Aberdeen Offices.
1.2. Objective
The purpose of the meeting was to identify key safety, health and environmental (SHE) hazards that have the potential to significantly impact upon or influence the subsequent project design phases. Where such hazards were identified, the proposed measures to prevent, control or mitigate them were reviewed. Where necessary, further or alternative measures were actioned.
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 3 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
The overall objective of the HAZID/ENVID was to, wherever possible; ensure that the inherent safety, health and environmental principles are applied to the project design and to prescribe philosophies or controls to manage residual risks.
1.3. Scope
The HAZID/ENVID meeting covered the Kingsnorth pipeline from the discharge side of the compressors up to and including the Kingsnorth Offshore Platform riser base.
The Kingsnorth Offshore Platform has already been subject to a HAZID/ENVID and reported separately Ref. [S2]; it was therefore not included within the scope of the meeting.
SHE issues not impacting upon or influencing the FEED 1a design were specifically excluded from the scope of the HAZID/ENVID meeting.
1.4. Abbreviations
CCS Carbon Capture and Storage ENVID Environmental Hazard Identification GOGC Genesis Oil and Gas Consultants Ltd HAZID Hazard Identification SHE Safety, Health and Environmental TOR Terms of Reference
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 4 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
2. Methodology
2.1. Overview The HAZID/ENVID Terms of Reference (TOR) Ref. [S2] was used as the basis for the meeting.
2.2. HAZID/ENVID Nodes The study scope was divided into the following two nodes to facilitate appropriate examination:
Node 1: The onshore section of the pipeline from the discharge of the Kingsnorth power station CO2 compressors up to and including the landfall valve.
Node 2: From the landfall valve up to and including the Kingsnorth Offshore Platform riser base.
2.3. HAZID/ENVID Process The HAZID/ENVID guidewords were systematically applied to each of the study nodes to identify hazards that have the potential to give rise to safety, health or environmental consequences of concern.
The proposed prevention, control and associated mitigation measures were explored for each hazard that has the potential to give rise to consequences of concern. Further or alternative measures were proposed where the team were of the opinion that the proposed prevention, control or mitigation measures are not sufficient to reduce the associated risks to as low as is reasonably practicable levels.
Meeting attendees were reminded that the project was in FEED 1a. The focus of the meeting was therefore upon the identification of key safety, health and environmental hazards that had the potential to significantly impact upon or influence the subsequent design phases.
An E.ON UK provided HAZID/ENVID worksheet was used to record the minutes of the meeting. The worksheet was projected on a screen such that all participants could see its development during the meeting. Worksheet entries were made by exception, i.e. only HAZID/ENVID guidewords that gave rise to consequence of concern were recorded.
Several drawings were referenced during the meeting and are listed in Table 2.1.
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 5 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
2.4. Reference Materials The materials referenced during the meeting are summarised in Table 2.1; due to the memory requirements, these documents are not appended to this report.
Document /Drawing Title Document Reference Rev
Landfall Valve Planning Drawing Sheet 1 KCP-GNS-PLD-LAY-0001 02
Landfall Valve Planning Drawing Sheet 2 KCP-GNS-PLD-LAY-0002 02
Shore Approach & Landfall GA Sheet 1 KCP-GNS-PLD-LAY-0003 01
Shore Approach & Landfall GA Sheet 2 KCP-GNS-PLD-LAY-0004 01
Onshore Pipeline Route Map KCP-GNS-PLD-MAP-0001 03
Onshore Pipeline Route, Site Location Plan, Sheet 1 of 4.
KCP-GNS-PLD-MAP-0003 03
Onshore Pipeline Route, Site Location Plan, Sheet 2of 4.
KCP-GNS-PLD-MAP-0004 03
Onshore Pipeline Route, Site Location Plan, Sheet 3of 4.
KCP-GNS-PLD-MAP-0005 03
Onshore Pipeline Route, Site Location Plan, Sheet 4of 4.
KCP-GNS-PLD-MAP-0006 03
Route Word Document – Uncontrolled document showing the offshore pipeline route.
NA NA
Table 2.1 List of HAZID/ENVID Reference Materials
2.5. Meeting Attendees Table 2.2 details the meeting attendees. The range of personnel ensured that the necessary skills, knowledge and experience were available to perform a thorough and accurate HAZID/ ENVID.
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Project Title: Kingsnorth Carbon Capture & Storage Project Page 6 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Name Role Company
HAZID/ ENVID Meeting Chairman GOGC
Safety Lead and Meeting Secretary GOGC
Project Manager GOGC
Safety Consultant E.ON UK
Process Lead GOGC
Flow Assurance Lead GOGC
Environmental Lead GOGC
Pipelines GOGC
Pipelines GOGC
Project Management Office Arup
Client Representative E.ON
Project Planning/Deputy Project Manager GOGC
Environment and Modelling E.ON UK
CDMC / Safety Manager E.ON
Table 2.2 List of HAZID/ENVID Attendees
KCP-GNS-SHE-HZI-0001 Revision: 02
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Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
3. Main Findings and Actions Arising The completed HAZID/ENVID worksheets are presented in Appendix B.
The HAZID/ENVID did not raise any issues that were likely to significantly affect the design of the Kingsnorth topsides process or structure. The ten actions that arose during the HAZID/ENVID are detailed in Table 3.1.
Action No.#
Action Actionee Action Due Date
1.1 To confirm reliability of trip system for CO2 dryness
End Oct.
1.3 Determine a means to ensure the compression system is incapable of generating a pressure/temperatures greater than design.
FEED 1B/2.
1.5 Review the potential to overpressurise the land section of the pipeline due to liquid lock-in and warm-up.
End Nov.
1.6 Evaluate the potential for explosive decompression and determine whether associated control measures are suitable and sufficient.
Phase 1B.
1.10 Cross system ESD and blowdown
philosophy to be established.
Mid Nov.
1.12 Ensure that discharge of hydrotest water is included in the consenting process.
FEED 1B/2.
1.15 Review security strategy requirements. End Oct.
2.2 Review the potential to overpressurise the
offshore section of the pipeline due to liquid
lock-in and warm-up.
End Nov.
2.3 Ensure that discharge of hydrotest water is included in the PON 15C by RSK.
End Oct.
2.4 Review pipeline route survey to provide advice on actions to mitigate potential environmental disturbance.
End Oct.
Table 3.1 HAZID/ENVID Actions
#Action numbers refer to the corresponding line within the HAZID ENVID worksheet.
GOGC will track all actions until the end of FEED 1a. Any actions outstanding at the end of FEED 1a will be entered onto an appropriate register for tracking through to completion.
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 8 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
4. Supporting References
[S1] Kingsnorth Carbon Capture & Storage Project - Offshore Platform HAZID/ENVID Report – KCP-GNS-IFS-HAZ-0001, Rev 01.
[S2] Kingsnorth Carbon Capture & Storage Project - Kingsnorth Pipeline HAZID/ENVID Meeting Terms of Reference - KCP-GNS-SHE-TOR-0002 Rev01.
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 9 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Appendix List of Appendices
Appendix A HAZID/ENVID Guidewords.
Appendix B Completed HAZID/ENVID Worksheets.
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 10 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Appendix A: HAZID/ENVID Guidewords
1 Process Parameters
Temperature Pressure Flow
Level Inventory Compositions
Flash point Toxicity Corrosivity
Solid deposition Wax / hydrates Chemical reaction
Materials of construction/compatibility
Kinetic Energy Potential Energy
2 Operating methods
Black start Start up Shutdown
Normal operation SIMOPS Sampling
Calibrating Testing Service failure (air, water, etc)
Emergency shutdown Blowdown Isolation
Draining / venting Purging / filling Winterisation
Maintenance
3 Access / egress
Operational access Maintenance access Confined spaces
Means of escape Means of evacuation Life saving appliances
4 Environment
Liquid effluent Solid effluent Venting
Noise level Flaring Air intakes / exhausts
Ventilation Pressurisation Gas / Oxygen enrichment
Extreme weather Humidity Illumination
Discharges to Air Discharges to Water Odour
Environmental Receptors (including Population).
Energy Efficiency Lightening
5 Loss prevention
Fire / head detection Smoke / gas detection Active fire protection
Fire areas Area classification Passive fire protection
KCP-GNS-SHE-HZI-0001 Revision: 02
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Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Blast overpressure HP / LP interfaces Deluge drains
Ignition sources Leak sources
6 Plant and equipment
Design pressure Design temperature Materials of construction
Vibration Thermal stress Pressure cycling
Hydraulic shock Static electricity Ionising radiation
Mechanical seals Liquid seals Vacuum protection
Galvanic corrosion By-pass valves Hazardous areas
7 Structures
Loads on / strength of Structure / foundations / equipment supports
Type of loads Static / dynamic / environmental
Creep Scour Fire / blast walls
Impact protection Weights limits Platforms
Handrails Bunds / Drains Stairs / Ladders
Walkways Airlocks / doors Floors / Hatches
8 Control systems
ESD, F+G logic Control software DCS failure
Failure modes System reliability Alarms and trips
High integrity systems Overrides and resets Control room ergonomics
9 Electrical systems
Power supplies DC supplies Battery supplies / UPS
Distribution boards Cable routes Inductive effects
Load shedding Overload protection Heat tracing
Motor start frequency Emergency lighting EMC
10 Communication
Radios PA system Signs
Beacons / klaxons Nav Aids
11 Installation
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Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Temporary supports Sequence of events Rigging
Lifting points Scaffolding Hot work
Hot tap / line freeze Specialist welding Tie-in points
12 Personnel / Occupational Hazards
Slips / trips / falls Electrocution Hot / cold environment
Hand tools Manual handling Equipment failure
Hazardous chemicals Machine tools High level working
Rigging lines Ionising radiation Toxic gases / fume
Inert gases Smoke Steam
Asbestos Crew change Roles and responsibilities
Overboard working Human Factors
13 Dropped objects
Containers Gas bottle Swinging loads
Small overhead objects Drill pipe / casing Drill collars
Scaffolding Anchors Special lifts
14 Marine
Shuttle tanker Supply vessel Standby boat
Shipping lanes Drilling rig Diving support vessel
Anchor handling vessel Helicopter Fishing vessel
DP System Anchors Pipelines
Chains / cables Work < 500 m Buoys
15 Emergency Response
Temporary Refuge Command Structure Special procedures
Fire and Explosion H2S Gas TEMPSC
EER Helicopters Vessels
Isolation
16 Drilling
Drilling Workover Wirelining
Mechanical problems Well control problems Drillstring problems
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 13 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabi l i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or i ndirect loss howsoever arising from the use of the Information by any p arty.
Formation problems Shallow gas Mud weight
17 Diving
Dropped objects Life support DSV
Breaking containment Process operation Maintenance
18 Site operations
Security access Vehicles Drains
Cranes Excavations Earth moving
Temporary facilities Third party contractors
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 14 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabil i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any liabil i ty whatsoever for any direct or indirect loss how soever arising from the use of the Information by any party.
Appendix B: Completed HAZID/ENVID Worksheets
HAZID ENVID Worksheets – Node 1
HAZID ENVID Worksheets – Node 2
KCP-GNS-SHE-HZI-0001 Revision: 02
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Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabil i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or indirect loss howsoever arising from the use of the Information by any party.
HAZARD SCENARIO CAUSES CONSEQUENCES POTENTIAL IMPACT TO PEOPLE ON AND OFFSITE
POTENTIAL IMPACT TO THE ENVIRONMENT
RECOMMENDED SAFEGUARDS ACTIONS/ COMMENTS
1 The onshore section of the pipeline from the discharge of the Kingsnorth power station CO2 compressors up to (and including) the landfall valve.
1.1 Toxicity (of CO2) Loss of containment of CO2 from pipeline, caused by corrosion (external
or internal), third party intervention,
flange leak, mechanical failure,
upheaval buckling, geo-
movement,buoyancy.
Loss of containment of CO2. Potential multiple fatalities due to toxic/asphyxiant effects of CO2
release. Cryogenic impact.
Potential for reputational damage to
E.ON from persistent leak.
Potential fatalities to local species and
short term impact on habitat.
Dryness specification for CO2 from site – coupled with monitoring and trip system to protect pipeline against internal corrosion. Use of a technology that
does not give an instant loss of dryness for CO2 should be used. Adequate
margin between trip point and water dropout to be maintained. Internal
corrosion allowance (1.5 mm allowance).
Pipeline Integrity Management System (PIMS) (for internal and external
corrosion monitoring functions and pipeline route inspection).
External corrosion protection measures: impressed current, pipeline coating.
Pipeline burial depth and markers. Security arrangements for landfall valve
location (to be defined).
Leak detection system (to be defined)
Minimisation of flanges and take-off lines (likely to be within site and at landfall
valve location). Application of correct piping/instrument specification.
Hydrotesting and leak testing of pipeline. Quality control of construction and
design activities.
Vehicular protection for above ground sections.
Buoyancy issues to be prevented by application of concrete weight coat.
D P-S to confirm reliability of trip
system for CO2 dryness – end Oct.
1.2 Toxicity (of CO2) Escalation from Kingsnorth site causes
pipeline failure.
Fire and explosion at Kingsnorth site, causing
pipeline failure.
As above. As above. Burial of route within site where possible. Layout of onsite equipment accounts for pipeline route through the site to manage potential escalations eg
orientation of gas turbines.
Kingsnorth site F&E protection. Site boundary isolation, to minimise potential
lost inventory onsite.
None.
1.3 Toxicity (of CO2) Loss of containment due to over
pressurisation from compression, overstressing of pipeline due to high
temperature.
Catastrophic failure of
pipeline.
As above. As above. Compression design to ensure pressure does not exceed MAOP of pipeline.
Adequately SIL rated temperature trip to ensure pipeline does not exceed
design temperature.
Determine a means to ensure the
compression system is incapable of generating a pressure/temperatures
greater than design. – FEED 1B/2
1.4 Toxicity (of CO2) Loss of containment due to fatigue or
material/construction defect
Loss of containment of CO2. As above. As above. Hydrotesting and pipeline manufacturing and welding quality control, as above. None.
1.5 Pressure Liquid lock-in and warm-up of CO2,
causing overpressure and loss of
containment
Loss of containment of CO2 As above. As above. Further evaluation is required to determine if this is a credible hazard. Review the potential to overpressurise
the land section of the pipeline due to
liquid lock-in and warm-up. - end Nov.
1.6 Pressure Explosive decompression of dense
phase at high temperature.
Catastrophic failure of pipeline
with pipeline fragmentation
As above. As above. Further evaluation is required to determine if this is a credible hazard. Evaluate the potential for explosive decompression and determine whether
associated control measures are
suitable and sufficient. Phase 1B.
1.7 Temperature Loss of containment of CO2. Embrittlement of materials
within effect zone.
Potential personal injuries as a result
of failure of load bearing structures.
N/A Route selection (to avoid proximity to vulnerable structures). Physical barriers to protect specific structures. To be considered in subsequent stages of
design.
Thermal imaging along pipeline route. Isolation and blowdown of onshore
pipeline section to minimise duration of effect.
None.
1.8 Startup Low temperature due to pressure drop-down during initial pipeline
pressurisation for commissioning.
No concern. N/A Localised cold temperature along
pipeline route. No significant concern
Not applicable. None.
1.9 Shutdown Rapid closure of valve creates
“hammer” effect within pipeline
Could give rise to loss of
containment at the valve
closure location
No concern. No concern. Large valves – closure times are relatively slow. CO2 is compressible, even in
dense phase, therefore hammer effect not considered significant.
None.
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 16 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabil i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or indirect loss howsoever arising from the use of the Information by any party.
HAZARD SCENARIO CAUSES CONSEQUENCES POTENTIAL IMPACT TO PEOPLE ON AND OFFSITE
POTENTIAL IMPACT TO THE ENVIRONMENT
RECOMMENDED SAFEGUARDS ACTIONS/ COMMENTS
1.10 Isolation and venting Onshore pipeline emergency Requirement to vent down onshore pipeline CO2
inventory.
Prolonged exposure of personnel to
loss of containment.
Increased amounts of CO2 released
into environment.
Isolation and blowdown routes (onsite). Cross system ESD and blowdown
philosophy to be established. mid Nov.
1.11 Access Presence of significant number of heavy construction vehicles during
installation.
Potential to impact on local
roadways and infrastructure.
Personal inconvenience and harm
during construction activities.
N/A. Traffic Management Plan, to manage interactions with local services and
facilities.
None.
1.12 Discharges to Water Requirement to use treated seawater
to undertake hydrotesting.
Requirement to discharge
water after use.
No concern. May lead to environmental impact. Discharge of hydrotest water will require consent. Ensure that discharge of hydrotest water is included in the consenting
process. – FEED 1B/2
1.13 Electrical systems Use of impressed current corrosion protection systems, on CO2 pipeline
and other systems crossed using
similar systems.
Interaction between cathodic protection systems resulting in
ineffective corrosion inhibition
eventually leading to loss of
loss of containment.
Potential multiple fatalities due to toxic/asphyxiant effects of CO2
release. Cryogenic impact.
Potential for reputational damage to
E.ON from persistent leak.
Potential fatalities to local species and
short term impact on habitat.
Pipeline design will be to relevant codes which specify the standard for pipeline
crossings. PIMS to include monitoring of CP systems.
None.
1.14 Electrical systems Potential High Voltage interference
causing induced current during
construction and impact on CP system
during operation.
Potential of failure/reduced
efficiency of CP system.
Potential for introduction of
welding defects during
construction.
Electrical shock. N/A. CP system design and construction welding procedures. None.
1.15 Security Third party intervention at landfall valve giving rise to loss of
containment.
Potential damage/loss of containment with operational
disruption.
Potential multiple fatalities due to toxic/asphyxiant effects of CO2
release. Cryogenic impact.
Potential for reputational damage to
E.ON from persistent leak.
Potential fatalities to local species and
short term impact on habitat.
None presently developed. Review security strategy requirements
end Oct.
All guidewords checked: Y / N
Base case and variation considered: Y / N
KCP-GNS-SHE-HZI-0001 Revision: 02
Project Title: Kingsnorth Carbon Capture & Storage Project Page 17 of 17
Document Title: Pipeline HAZID/ENVID Report
Kingsnorth CCS Demonstration Project The information contained in this document (the Information) is provided in good fai th. E.ON UK plc, i ts subcontractors, subsidiaries, affi l iates, employees, advisers, and the Department of Energy and Cl imate Chan ge (DECC) make no representation or warranty as to the accuracy, rel iabil i ty or completenes s of the Information and neither E.ON UK plc nor any of i ts subcontractors, subsidiaries, affi l iates, employees, advisers or DECC shal l have any l iabil i ty whatsoever for any direct or indirect loss howsoever arising from the use of the Information by any party.
HAZARD SCENARIO CAUSES CONSEQUENCES POTENTIAL IMPACT TO PEOPLE ON AND OFFSITE
POTENTIAL IMPACT TO THE ENVIRONMENT
RECOMMENDED SAFEGUARDS ACTIONS/ COMMENTS
2 From the landfall valve along the shore approach up to and including the Kingsnorth Offshore Platform riser base.
2.1 Toxicity (of CO2). Loss of containment of CO2 from pipeline, caused as above, plus ship
anchors, dropped objects, scour,
fishing, free spanning due to sand
waves.
Loss of containment of CO2. Potential multiple fatalities due to toxic/asphyxiant effects of CO2
release. Cryogenic impact.
Vessel instability due to subsea
release.
Potential for reputational damage to
E.ON from persistent leak.
Minimal impact on local species and
short term impact on habitat.
Pipeline first 45km is trenched and backfilled to a depth of 2 m, with localised areas of 3m depth with rock and gravel dumping as additional protection. Pre-
sweeping of sand waves to reduce vulnerability to spanning.
Tie-in spools to be protected by concrete mattresses.
Pipeline surveys to monitor seabed movements and damage to pipeline.
Pipeline route to be clearly identified on Admiralty charts and in discussions
with fishing organisations.
Mass balance reconciliation to identify any gross disparity in pipeline flow to
platform – applicable over relatively long term periods.
None.
2.2 Pressure. Liquid lock-in and warm-up of CO2, causing overpressure and loss of
containment.
Loss of containment of CO2 As above. As above. Further evaluation is required to determine if this is a credible hazard. Review the potential to overpressurise the offshore section of the pipeline due
to liquid lock-in and warm-up. - end
Nov.
2.3 Discharges to
Water.
Requirement to hydrotest pipeline with
treated seawater.
Discharge water to sea. No concern. May lead to environmental impact. Discharge of hydrotest water will require consent. Ensure that discharge of hydrotest water is included in the PON 15C by
RSK - end Oct.
2.4 Environmental
Receptors.
Identification of specific habitats for Saberlalia – disturbance during
pipeline installation.
Would require pipeline route
revision to avoid prosecution.
No concern. Environmental sensitive habitat
disturbed.
Undertake route survey to identify any habitats likely to influence pipeline
route.
Review pipeline route survey to provide advice on actions to mitigate
potential environmental disturbance.
end Oct.
2.5 Installation. Requirement to construct coffer dam
for installation of shore approach.
Flooding of St Mary’s
marshes.
Potential harm to personnel working
in or around coffer dam and to public
in the vicinity.
No consequence of concern. Specialist contractor to undertake coffer dam construction and maintenance in
accordance with good industry practice.
None.
2.6 Marine. Unexploded ordnance. Potential ordnance present
along pipeline route.
Potential injury and significant project delay. Potential damage to
installation vessel.
No concern. Pipeline pre-construction survey. Pipeline installation contractor to engage
ordnance disposal specialists.
None.
All guidewords checked: Y / N
Base case and variation considered: Y / N