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
Alert 7 Sept 2018 Hydraulic hose failure: risk of injection injury A Mechanical Technician was using hydraulic flange spreaders to remove a gasket from pipework during a shutdown. Pre-use checks had been conducted and approved gloves were being worn. He was holding the hydraulic flange spreaders in the correct manner, by their handle. The flange spreaders were bein… View Alert
Learning Moment 3 Aug 2018 Transportation of compressed gas cylinders A deckcrew member was securing them by strapping them to a standard wooden pallet. One of the bottles fell, fracturing the valve. This caused a rapid depletion of air and the cylinder was propelled around the container. View Learning Moment
Alert 30 Jul 2018 11" Rigsaver air shut off Valve - Safety Bulletin Diesel engines used for offshore power generation should be fitted with a shut off valve that blocks the engines intake system, cutting off both the external fuel source and air required to keep the engine running, preventing the catastrophic consequences of diesel engine runaway. Legacy 11" air shu… View Alert
Alert 21 May 2018 Handrail section fell 20m from crane pedestal to lower deck walkway A section of guardrail weighing 55kgs fell 20m from a long-term disused and hard barriered crane pedestal perimeter walkway to a deck walkway directly below. View Alert