Alert 20 Mar 2019 Failure of Carbon Steel Piping due to Methanol Stress Corrosion Cracking After approximately 18 months in service, a pinhole leak was observed on a carbon steel line from the methanol storage vessels to methanol transfer pumps. Further examination revealed multiple leaks and weeps at various locations throughout the low-pressure carbon steel bunkering, storage and transf… View Alert
HVL 28 Feb 2019 High Value Learning - Hydrocarbon release and spill to sea from newly installed controlled valve stem packing after a very short operation life The control valve gland plate loading bolts and nuts became detached from the valve, leading to a loss of containment at the valve stem packing gland. The evidence suggests that the lock nuts were not tightened when the valve was brought into service and there was no record of any checks being carri… View Learning
Alert 15 Feb 2019 Lithium Ion Battery Overheated Following Exposure to Water Following the event, the lithium ion battery was removed and found to be overheating. Shortly thereafter the battery started to smoke then catch fire. Fortunately, the fire was controlled and extinguished immediately however the outcome could have been much worse. View Alert
Alert 1 Feb 2019 Serious cut to finger whilst handling insulation jacket Whilst holding the section of stainless steel insulation, the pipe stuck and the material slipped within his hand. This caused the insulation jacket to move and the technician instinctively put his hand on the edge to stop it. However, his hand became trapped between the steel edge and a section of … View Alert
HVL 31 Jan 2019 High Value Learning - Gas leak from perforated closed drains line to to simultaneous operations A 2” closed drain line was subject to bristle blasting in order to allow further inspection & fabric maintenance. Before work commenced the line was subject to an assessment by the onshore Technical Authority and it was confirmed as safe to bristle blast. However, the assessment was undermined … View Learning
Alert 9 Jan 2019 Lifeboat Battery Explosion Following the charging and completion of voltage checks, the battery compartment hatch was closed, and the engine was then started. At this point the battery exploded. Pieces of the battery and fluid were expelled from the compartment having been partially restricted by the closed hatch lid. Neither… View Alert
HVL 29 Dec 2018 High Value Learning - Failure of cable connector during drill-line de-reeving A drilling maintenance crew were performing the operation to de-reeve a 1 3/8” steel drill line. This was part of a planned drill line cut operation to remove 2000ft of drill line from the draw works during a drilling shutdown period. The drill line was being driven out by the draw works and then … View Learning
HVL 30 Nov 2018 High Value Learning - Hydraulic over torqueing of bolted joint equipment Two incidents have occurred during the hydraulic torqueing of bolted joints on assets operated by two different operators in the UKCS. In one instance, the event caused significant damage to the bolted joint; in the other event, the over torqueing value was identified before serious damage could occ… View Learning
Learning Moment 14 Nov 2018 What lies beneath? A number of months after the PDO was reported, a member of the crew noticed a lot of insulation and cladding debris on a walkway. Upon further inspection a flange was found on an adjacent access platform grating. The flange weighed 73.2 kilograms and had dropped 20 metres, the potential consequence … View Learning Moment
HVL 31 Oct 2018 High Value Learning - Facility emergency response capability unexpectedly impacted by power outage A power outage occurred after maintenance activities on a safety instrumented system on an offshore oil & gas production facility that inadvertently initiated the highest-level emergency shutdown on the installation. The outage unexpectedly impacted a number of the facilities emergency response … View Learning
Alert 15 Oct 2018 Fire in Laundry Tumble Dryer A fire in #1 tumble dryer in the platform laundry was caused by the contents of the dryer drum (coveralls) igniting. The fire was identified by fixed platform detection systems and extinguished by the Emergency Response Team. All platform personnel went to muster stations and production was shut dow… View Alert
HVL 30 Sept 2018 High Value Learning - Lube oil tank damage due to overpressure During start-up of the ancillary lube oil system, an overpressure event occurred, causing lube oil tank deformation and a minor loss of lube oil to the deck. There was no activation of the fixed fire & gas systems and no further escalation potential. Following a detailed investigation, it was de… View Learning