Topic
Ageing, Life Extension and Obsolescence
Ageing assets, life extension and obsolescence as integrity subjects.
Documents
- 2026May
GEC Type VMX High Voltage Switchgear (including GEC Alsthom, Alstom or Areva T&D)
HSE safety notice addresses partial discharge and vacuum interrupter integrity in legacy GEC VMX high-voltage switchgear. Following a disruptive circuit-breaker failure involving arcing and fire, it recommends checking applicable design modifications, maintenance records and substation environmental conditions, alongside discharge surveys, integrity testing and revised access risk assessments.
- 202615 Apr
BSEE: Exterior Walkway separates from temporary living quarters, putting workers at risk
An offshore accommodation walkway detached while three workers stood outside their room; all remained safe. Temporary quarters had served for 23 years, with inadequate inspections and degraded tab welds. The flash presents BSEE recommendations for operators to consider long-term design needs, revised inspection programmes and non-destructive weld testing.
- 202631 Mar
Ageing assets and life extension
Guidance on managing ageing assets and extending facility life through lifecycle planning, performance monitoring and integrity assurance. It presents a plan-do-check-act self-assessment framework, ageing modes analysis, competence arrangements and independent verification. Regulatory duties and health and safety representative involvement are discussed, alongside a Northern Endeavour corrosion example.
- 202631 Mar
Offshore Inspection Guide Electrical Power Systems
An inspection guide for assessing electrical power systems and duty holder compliance. It addresses generation, distribution, protection, portable equipment and safe electrical work, with condition-monitoring methods including partial-discharge analysis, thermography and insulating-oil assessment. Performance scoring supports regulatory intervention planning; ATEX equipment is excluded.
- 20263 Mar
BSEE: Falling corroded crane component results in near miss
A corroded crane boom cable runner fell approximately 16 m during maintenance on an offshore platform, landing approximately 6 m from personnel. The flash describes outstanding inspection repairs, incomplete hazard identification and absent barricades, with lessons on inactive equipment, dropped-object controls and workforce involvement in pre-job planning.
- 20265 Feb
BSEE Safety Alert 513 - Exterior Walkway Separates from Temporary Living Quarters, Putting Workers at Risk
Three workers escaped harm when an offshore platform’s third-floor walkway detached from temporary living quarters used for 23 years. The alert examines inadequate welded support, corrosion, material fatigue and inspection weaknesses. BSEE recommends considering long-term use in design, revised inspection programmes and non-destructive testing alongside visual checks.
- 202520 Feb
MSF: A broken stretcher could have led to injury
A stretcher fractured during transfer to a hospital bed following a vessel medevac, without further injury to the patient. Investigation found it was 13 years old; its manufacturer advised replacement after five years for that type. The flash recommends examination and replacement where shelf life has expired, noting manufacturer-dependent limitations.
- 202527 Jan
BSEE Safety Alert 495 - Turbine Generator Exhaust Silencer Failure
An offshore turbine generator silencer released perforated steel onto the deck after shutdown, with some pieces weighing up to 44 pounds. The alert describes 18 years of service and limited inspection coverage. BSEE recommends considering comprehensive exhaust-component maintenance, whole-silencer inspections, design assurance and dropped-object prevention measures where appropriate.
- 2025
2 - Integrity management of FPSOs/FSUs
OMAR guidance addresses structural and maritime integrity of UKCS FPSOs and FSUs, drawing on regulatory interventions. It discusses inspection regimes, hull loading, watertight integrity, cargo systems and station keeping, alongside competence, independent verification and safety-case review. Ageing assets and formal life-extension assessments receive particular attention.
- 202330 Oct
Fire extinguisher fails during pressure testing
A 13-year-old, 5 kg CO2 fire extinguisher rated to 200 bar failed at 196 bar during a scheduled hydrostatic test intended to reach 300 bar. Nobody was harmed. The flash discusses ageing and integrity, alongside actions concerning maintenance reviews, age-sensitive testing plans, inspection records and personnel training.
- 2022Feb
Maintenance of industrial uninterruptible power supply (UPS) systems
This safety notice examines industrial UPS failures at onshore major hazard establishments, including disrupted emergency power, localised fires and plant shutdowns. It identifies inadequate maintenance information, shorter component lifetimes and outdated firmware, and calls for suppliers to review information and users to update maintenance arrangements using current manufacturer revisions.
- 202131 Aug
Damaged Electrical Cable
During cargo-hold washdown, a crew member observed electrical arcing and glowing tie wire, stopped hosing and alerted the electrician. Ageing and weathering had exposed live wiring, while cable location hindered detailed inspection. The flash calls for visual checks of electrical cables, particularly in areas difficult to see.
- 202117 Mar
Offshore Pipeline Integrity Management (Issue 2)
Inspection guidance for assessing offshore hydrocarbon pipeline integrity management, compliance and performance. It addresses ageing and life extension, corrosion monitoring, pipeline and riser inspection, shutdown valve testing, pigging safeguards and emergency preparedness. Success criteria, sample inspection agendas and enforcement assessment guidance support examination of operators’ arrangements.
- 20195 Jul
Structural Integrity
Inspection guidance for assessing offshore dutyholders’ structural integrity management through data, evaluation, inspection strategy and programme. It sets success criteria and enforcement performance ratings, addresses structural reassessment and ageing assets, and explains how classification surveys and risk-based inspection can support assurance of safety and environmental critical elements.
- 2019Jul
Structural Integrity Management
Guidance sets out a lifecycle framework for managing offshore structural integrity against UK regulatory requirements and industry standards. It covers policy, responsibilities, inspection planning, structural reassessment, maintenance, information retention and audit. Competence, independent verification, emergency preparedness and gap analysis support implementation, with attention to ageing installations and life extension.
- 201819 Sep
Well Integrity (Operate Phase)
Inspection guidance for assessing well integrity during operation through management-system document review and role-specific interviews. It examines barrier verification, annulus pressures, operating and load limits, maintenance, change management and end-of-life review. Optional risk-assessment scrutiny covers qualitative assessment, QRA and FMECA, while enforcement guidance links inspection findings to compliance scoring.
- 201725 May
Near-miss: Fire hazard from leaking fuel supply line
A vessel’s low-pressure main-engine fuel line leaked through a failed T-piece weld, creating a potential fire hazard. Unable to isolate the pipe, engineers applied a temporary tape and resin repair. Age-related degradation was believed to be the root cause. The flash highlights watchkeeping, repair preparedness and repeated fuel-piping failures.
- 201610 Dec
Certain Types of Pool Hall Lighting Systems on Runners
HSE alerts swimming-pool operators to collapse risks from aluminium lighting mounted on runners with ageing plastic brackets and rollers. A lighting assembly fell onto the pool deck without injuring anyone. The alert explains restricted inspection visibility and recommends identifying affected systems, inspecting supports thoroughly and considering replacement or additional securing where appropriate.
- 201618 Apr
Mooring near-miss: Lines break during un-docking operation
This safety flash describes two synthetic mooring ropes parting while used as tug lines during undocking. No crew were standing at the connection area, and no injuries occurred. Investigation found no prior signs of rope damage; the ropes had been in service since the vessel’s delivery in 2005.
- 20164 Feb
Collapse of a mezzanine deck on board ro-ro passenger ferry St Helen
Investigation of St Helen’s partial mezzanine car-deck collapse at Fishbourne ferry terminal. A steel wire ramping rope parted during lowering, following excessive wear associated with inadequate lubrication. The report examines rope and sheave condition, consequential beam damage, maintenance management, thorough examinations and unresolved greasing non-conformities.
- 2015Sep
Keeping electrical switchgear safe
Guidance for owners and operators of three-phase switchgear rated from 1 kV to 33 kV AC. It covers safe operation, competence, permits, maintenance and protection testing for oil, air, vacuum and SF6 equipment. Diagnostic methods and aged-equipment assessments support decisions on retention, refurbishment, retrofit or replacement.
- 201517 Jun
Collision between passenger vessel Millennium Time and motor tug Redoubt
Investigation of a Thames collision involving Millennium Time, Redoubt and towed barges, leaving nine passengers with minor injuries. Analysis examines steering responsiveness, absent rudder indication, helm competence, supervision and possible hydrodynamic interaction. It also addresses evacuation readiness, watertight-integrity checks and inaccurate passenger reporting, with steering trials informing subsequent improvements.
- 2014May
Key Programme 4 (KP4) Report
HSE reports findings from its 2011–2013 ageing and life-extension inspection programme for offshore installations. It examines structural, process, marine and pipeline integrity, equipment obsolescence and organisational arrangements. Recommendations emphasise forward planning, performance-data trending and assurance, supported by dutyholder case studies covering structural monitoring, gap analysis and hydrocarbon leak reduction.
- 201419 Feb
Safety Alert 307 - Lower Stairwell Step Collapses Causing Injury
A contractor injured his knee when fibreglass bracing supporting the last stairwell step collapsed. The alert identifies possible ageing and deterioration despite an apparently sound condition. It describes replacement aluminium supports, additional bracing and securing bolts, and recommends stairwell inspections and maintenance aligned with manufacturers’ recommendations.
- 201211 Oct
Hand injury during O₂ handling and equipment maintenance
An explosion during an oxygen quad change on a diving support vessel caused second-degree burns to both hands despite gloves. The precise cause remained undetermined. Findings addressed regulator age, unsuitable thread tape, uncontrolled venting and maintenance deficiencies; actions covered servicing, replacement, compatible fittings, dedicated tools and pre-use checks.
- 2009
Guidance on management of ageing and thorough reviews of ageing installations [PDF 96KB]
Guidance on incorporating offshore installation ageing into five-yearly safety-case reviews and life-extension assessments. It examines equipment condition, remaining life, inspection and maintenance strategies, structural analysis, competence and performance indicators. It also addresses when changes warrant reassessment of fire and explosion hazards and how to evaluate options for degraded equipment.
- 2007Nov
Key Programme 3 (KP3) Installation Integrity
HSE’s KP3 report evaluates offshore asset integrity through maintenance-management inspections and safety-critical system tests. It examines maintenance backlogs, deferrals, corrosion, ageing assets and leadership weaknesses. Traffic-light assessments identify uneven performance, with particular concerns over temporary-refuge ventilation shutdown and deluge reliability, alongside examples of improved planning and assurance.
- 200730 Jul
Weld failure on Kirby Morgan KM17B 505-055 neck clamp
Reports a weld failure in an eight-year-old Kirby Morgan neck clamp, with inadequate weld bead build-up or crevice corrosion suggested as possible causes. Attached manufacturer notices describe another damaged clamp incident and detail pre-dive checks, adjustment, periodic inspection, replacement considerations and optional dye penetrant testing for suspected damage.
- 200323 Jul
Safety Alert 17 - Electrical Wiring Inspection And Maintenance
Two electrical fires on Pacific OCS platforms involved cracked control-panel wiring insulation and a failed generator rotor winding. Neither caused injuries. Against a background of ageing equipment, the alert recommends that operators consider periodic visual inspection, insulation-resistance testing and thermal imaging, with maintenance where problems are detected.
- 20022 Jul
Dynamic positioning (DP) vessel blackout
A saturation-diving vessel suffered a complete blackout and moved some 190 m before control was regained. Divers were recovered without injury. Investigation identified degraded power-management electronics and management-system weaknesses. Recommendations address replacement of the ageing system, UPS maintenance and testing, broader redundancy analyses and revised diving emergency arrangements.
- Undated
Rig Generator-Engine Fire Following Blower Seizure
Investigation of a rig generator-engine fire following blower seizure and quill-shaft failure. The report links pressure and temperature build-up to displacement of the air-box cover and subsequent ignition. It discusses ageing components, extinguisher response and possible increased maintenance or replacement. No injuries or environmental pollution were reported.
- Undated
Partial Separation of Temporary Living Quarters Walkway
BSEE investigates partial separation of a temporary living quarters walkway at Devils Tower, with three workers present and no injuries or dropped objects. Findings identify insufficient weld support, corrosion, fatigue and inadequate visual inspections after prolonged use. The report describes immediate securing, access restrictions, repairs and planned non-destructive testing.
- Undated
Stairway Step Collapse Causes Knee Injury After Oil Sampling
An offshore operator injured his right knee when a stairway step collapsed after oil sampling. The investigation identified failure of its fibreglass support, with ageing and exposure discussed as possible deterioration factors. Repairs included aluminium supports, additional bracing and fastening; other stairwells were inspected.
- Undated
16-May-2026 0915 G19996 MC 773 Damaged/Disabled Safety Systems
An investigation examines loss of power at Devil’s Tower following a turbine overspeed sensor failure and an emergency generator’s faulty electronic control module. Production stopped and non-essential personnel were evacuated. A rental generator supported restoration. The report identifies obsolete parts and outdated troubleshooting software, with no injuries or pollution reported.
- Undated
Equinor – Åsgard B – investigation of incident with fire
Investigation of a dry-type transformer fire on Åsgard B examines probable winding-insulation degradation leading to a short circuit or arc flash. It reviews protective instrumentation, maintenance limitations, transformer working-life arrangements and shortcomings in applying earlier incident learning. Firefighting, water cooling, thermographic checks and partial evacuation are documented; nobody was injured.
- Undated
Gassco/Equinor – Kårstø – investigation of electrical incident with personal injury
Investigation of an arc-flash injury during starter-drawer replacement at Kårstø. An electrician sustained second-degree burns following a short circuit. The report examines circuit-breaker faults, ageing switchgear, incompatible test equipment, omitted protection adjustments, inadequate protective equipment and weaknesses in work planning, risk assessment, training and supervision.
- Undated
KP3 handbook
Abbreviated handbook supporting HSE’s KP3 offshore asset integrity programme. It explains pilot projects, inspection methods, maintenance backlog assessment, safety-critical element verification and performance indicators. Programme findings and annexed investigation protocols address integrity deficiencies and hydrocarbon releases, alongside industry collaboration on good practice and integrity management.
- Undated
Maintenance Management
Inspection guidance for assessing maintenance management of offshore topsides equipment, including safety-critical elements and pressure systems. It examines asset registers, inspection programmes, maintenance planning and execution, review of ageing plant, and leadership. Assessment questions address condition monitoring, corrosion management, maintenance deferrals, competence and performance indicators.
- Undated
Temporary Refuge Integrity
Inspection guidance for assessing offshore temporary refuge integrity management. It covers refuge design, impairment frequency, porosity and air-change testing, HVAC performance, ageing, maintenance and emergency planning. It distinguishes envelope tightness from survivability and provides inspection questions and duty holder performance-rating criteria.