Release of stored energy from coiled superloops

  • Safety Flash
  • Published on 30 October 2018
  • Generated on 17 September 2025
  • 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:

SWL plate dropped from crane block

An “SWL” plate weighing 0.9kg fell from the auxiliary hook block and landed on the main deck of a newly purchased vessel.

Read more
Unsafe Lifting practices during dry dock

An unsafe attempt was made to lift 14 empty oil drums using only a web sling, without clamps, certified frames, or proper securing.

Read more
Handling alarms on the bridge – a DP incident

DPO accidentally pressed the adjacent "Take" button on the DP panel.

Read more
Uncoordinated Emergency Shutdown due to pipe failure

All cargo pumps (No. 1, 2, and 3) tripped simultaneously due to Emergency Shutdown (ESD) activation.

Read more
UK HSE: oil company fined after serious failure of elevator

The UK HSE has fined a North Sea oil and gas operator £300,000 after three crew members descended into a water filled lift shaft on a floating platform in the North Sea causing them to become partially submerged.

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.