Skip to content

NOPSEMA: person injured in chain hoist incident

The National Offshore Petroleum Safety and Environmental Management Authority (NOPSEMA) of Australia has published Safety Alert #73 relating to an incident on an offshore facility where members of the workforce were impacted during a lifting operation. One member of the workforce was injured and transferred onshore for medical treatment.

What happened

The incident involved a monorail hoist dropping a 500kg piping spool (including ancillaries) when its beam trolley, chain hoist and suspended load overran the end-stop.

What went wrong?

NOPSEMA’s preliminary findings identified that

  • The monorail hoist was not fit for purpose, specifically the monorail end stops and beam trolley width;
  • The beam trolley had been modified outside of management of change processes;
  • The lift plan was not followed, resulting in unsafe operation of the monorail hoist.

NOPSEMA reminded duty holders that “all lifting equipment must be designed, installed, inspected, and maintained in accordance with the relevant standards and by a competent person.”

Lessons learned

NOPSEMA noted the following:

  • Monorails, including their end stops and attachment to supporting structures, must be designed, installed, and inspected in accordance with the requirements of the relevant standards by a competent person;
  • Serially produced lifting equipment, including monorail beam trolleys, must not be modified from the original equipment manufacturer design;
  • Appropriate lifting equipment must be selected for use for the specific lifting application;
  • Monorail hoist systems are designed for the vertical lifting/lowering and lateral transfer of loads. Monorail hoists must not be used for dragging loads and non-vertical lifting as it may result in a failure of the monorail beam/beam trolley/end stops and/or the dropping of the load.

Members may wish to review:

Safety Event

Published: 19 August 2021
Download: IMCA SF 23/21

Relevant life-saving rules:
IMCA Safety Flashes
Submit a Report

IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of all. The effectiveness of the IMCA Safety Flash system depends on Members sharing information and so avoiding repeat incidents. Please consider adding [email protected] to your internal distribution list for safety alerts or manually submitting information on incidents you consider may be relevant. All information is anonymised or sanitised, as appropriate.

IMCA’s store terms and conditions ( apply to all downloads from IMCA’s website, including this document.

IMCA makes every effort to ensure the accuracy and reliability of the data contained in the documents it publishes, but IMCA shall 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.