Gas Safety Act 2019

A licensee must submit a revised safety case for gas infrastructure to the Director if –

developments in technical knowledge or the assessment of hazards relevant to the gas infrastructure make it appropriate to revise the safety case; or proposed significant modifications of the gas infrastructure could increase the overall levels of risk, or danger to persons or property; or a proposed modification of the gas infrastructure may significantly influence the level of a particular risk or the ranking of risk contributing factors; or the licensee proposes to make a significant change to the safety management system for the operation and management of the gas infrastructure; or the licensee or gas infrastructure changes ownership; or the licensee proposes to make a significant change in respect of the operations or maintenance contractor for the operation and management of the gas infrastructure; or the licensee proposes to dismantle, decommission or remove any part of the gas infrastructure in a manner different from the procedures set out in the safety case.