This Defence Standard (DEF STAN) 02-309, specifies the general requirements for, and gives guidance on the procurement of Gas Turbines for installation in HM Surface Ships as either propulsion prime movers or for use with suitably rated alternators. 

This DEF STAN includes the minimum requirements for the following: 

Operating conditions and operating environment; 

Inspection, Quality Assurance and Testing; 

Guidance material intended to assist the manufacturer or system designer, and to ensure common ground between him and all involved in procurement. 

Gas Turbines and their associated systems shall comply with the requirements of all relevant standards whether national, international, military or naval. 

The manufacturer shall describe any hazard that may exist during the operation or maintenance of the equipment. Precautions necessary to remove the hazard shall be detailed. If a hazard cannot be completely eliminated the manufacturer shall state the possible consequences to personnel and equipment. 

This DEF STAN has been written and shall be used taking into account the policy stipulated in JSP 430 Ship Safety Management Part 1. Equipment new to service shall have a full safety case developed for it. Equipment repaired, modified and/or currently in–service shall require a safety assessment.