Release of stored energy from coiled superloops

  • Safety Flash
  • Published on 30 October 2018
  • Generated on 3 April 2026
  • IMCA SF 24/18
  • 2 minute read

A release of stored energy from a coiled superloop resulted in an injury to the person uncoiling the superloop.

What happened?

The Member reporting this notes that this is the second such incident that they have encountered in the last year.

Coiled superloop

Incident 1

Injury to person uncoiling superloop

Incident 2

What went wrong? What were the causes?

In both cases, the injured person was standing in the centre of the coiled superloop releasing fastenings when the sling sprang upwards, striking the person in the face. After the first incident, certain company personnel attended a training course specifically addressing the risk of stored energy in coiled superloops and how to control these risks when uncoiling. It was then the intention that these persons would be present at third-party yards to provide advice when company coiled superloops were being uncoiled.

However, whilst there was a trained person at the yard at the time of the second incident, uncoiling by untrained yard labour took place without taking his advice.

What was the outcome for the company?

Company work instructions have been updated to include safety instruction on the uncoiling of superloops. The intention of the safety instruction is to raise the awareness of the risks involved in uncoiling superloops and how to control these risks to third parties receiving coiled superloops.

Members may wish to refer to:

Latest Safety Flashes:

MAIB: Sinking of tug Biter with loss of two lives

MAIB has published Accident Investigation 17/2024 relating to the girting and capsize of tug Biter with the loss of two lives.

Read more
Dropped object – strop parted over sharp edge

A cylinder was lifted to a height of approximately 6 metres over deck of the vessel, the sharp steel edges of the cylinder cut through the firehose protection and caused the strop to part.

Read more
Person injured when pry bar slipped

A crew member who was applying downward pressure to their pry bar to lift a track, fell towards the deck when the pry bar slipped.

Read more
MSF: High potential near miss during FRC maintenance

The Marine Safety Forum has published Safety Alert 26-01 relating to an incident where there was an unplanned lowering of an FRC to the sea

Read more
BSEE: Crane incident leads to serious facial injuries

BSEE has published Safety Alert 512 relating to a crane incident during well abandonment which led to a worker being struck and suffering serious facial injuries.

Read more

IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of the entire offshore industry.

The effectiveness of the IMCA Safety Flash system depends on the industry sharing information and so avoiding repeat incidents. Incidents are classified according to IOGP's Life Saving Rules.

All information is anonymised or sanitised, as appropriate, and warnings for graphic content included where possible.

IMCA makes every effort to ensure both the accuracy and reliability of the information shared, but is not be liable for any guidance and/or recommendation and/or statement herein contained.

The information contained in this document does not fulfil or replace any individual's or Member's legal, regulatory or other duties or obligations in respect of their operations. Individuals and Members remain solely responsible for the safe, lawful and proper conduct of their operations.

Share your safety incidents with IMCA online. Sign-up to receive Safety Flashes straight to your email.