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IMCA safety flashes disseminate important information on incidents and potential hazards and the lessons learnt from them that can help prevent incidents occurring elsewhere in the industry.

Individual safety events are available individually online, tagged and searchable, while the traditional PDF collections are also available for download.

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All members are encouraged to contribute relevant safety-related information – please visit our Safety Flash Reporting page for details on the submission process.

IMCA Contact

Nicholas Hough
Technical Adviser - HSSE and Offshore Survey

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Man killed by falling ROV equipment on a drill rig

A member has alerted IMCA to a fatal accident on a Drilling Rig. The accident involved an individual who was assisting to move a ROV hydraulic power pack, weighing 6,000 […]

| Included in IMCA Safety Flash 02/98

Electrical power supply to ROV equipment

When wiring up the trailing lead of a piece of ROV equipment to a junction box on the ship’s electrical supply, an electrician incorrectly identified the trailing lead wires and […]

| Included in IMCA Safety Flash 02/98

Electrical integrity of an ROV

During a vessel ROV mobilisation in port, a subcontractor’s 3-phase hydraulic power unit was connected to the vessel’s power supply. The unit was energised without either inspecting the third party […]

| Included in IMCA Safety Flash 01/98

Crawler crane drive chains

Recently a serious accident occurred at a contractor’s facility when the drive chain of a crawler crane failed, causing parts to fly about injuring an employee. The American Skyhorse Crane […]

| Included in IMCA Safety Flash 01/98

ROV incident

During routine maintenance on a Slingsby TA9 seven function manipulator jaw assembly, while removing the finger retaining bolts, a bolt with 80% of the thread exposed as it was being […]

| Included in IMCA Safety Flash 01/98

Cable handling incident

A technician was knocked unconscious when he was struck on the head by a cable. The incident occurred when cable being used to pull the beginning of a 23″ pipeline […]

| Included in IMCA Safety Flash 01/98

Dive Dynamics AH3 diving helmet

Set out below is a safety notice issued at the end of 1997 by UWI Circle Ltd of Aberdeen, UK. It should be self explanatory, but if you have any […]

| Included in IMCA Safety Flash 01/98

Anchor handling incident

An incident occurred on a vessel which was conducting an anchor handling operation. A sudden tensioning and de-tensioning of the tugger wire occurred, probably due to the vessel rising or […]

| Included in IMCA Safety Flash 03/97


A fire occurred when paint ignited in a bulk storage area on a vessel due to welding being carried out on the main deck. The firewatcher for the area had […]

| Included in IMCA Safety Flash 03/97

Container incidents

Three separate incidents have been reported involving container double and personnel doors. A control van personnel door fell off whilst someone was trying to open it; fortunately the individual jumped […]

| Included in IMCA Safety Flash 03/97

Explosion during removal of old resin plugs

A near miss incident recently occurred when there was an explosion of the resin/wire plug in a Wirelock ROV umbilical lifting/docking cone. Heat, applied using an oxy acetylene torch to […]

| Included in IMCA Safety Flash 03/97

Entry procedures

On a semi-submersible drilling unit, the port-aft column was opened up to allow a team to gain entry for visual inspection of an instrument on the cross-tubular section. Access to […]

| Included in IMCA Safety Flash 03/97

Potential problems with Hy Flex fire extinguishers

One of our members has informed us that the suppliers of HyFlex fire extinguishers have advised them that there is a potential problem with their DDC fire extinguishers. Following a […]

| Included in IMCA Safety Flash 03/97

Object falling from crane

An IMCA Member reported that during mobilisation a hydraulic jack dropped onto the main deck while work was being carried out on the straightener in the crane tower. The Contractor […]

| Included in IMCA Safety Flash 02/97

Nitrox misuse

A third party fitted the wrong regulator on a Nitrox cylinder despite the fact that the quad was fitted with plastic shields marked ‘Diving Gas’. The regulator was of a […]

| Included in IMCA Safety Flash 02/97

Contamination of divers by unknown liquid

Two divers, when disconnecting a flange on a pipeline, encountered what appeared to be water escaping from the flange. The fluid was subsequently found to contain toxic volatile condensate compounds. […]

| Included in IMCA Safety Flash 02/97

The guarding of moving parts in an ROV

We have been advised of a recent accident when a ROV Technician working on a Tether Management System lost some fingers in a chain drive mechanism. The company subsequently designed […]

| Included in IMCA Safety Flash 01/97

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