Quality is defined as that standard necessary to op­erate and maintain the station in a manner that com­plies vith the Station Design Intent and Final Safety Report, incorporating modifications made from time to time by the Station Modification Procedure. Op­erating Rules, Management Memoranda, Generation

Operating Memoranda, Technical Operation Memo­randa, Safety Memoranda and other statutory or man­datory instructions.

1.5.3 Hierarchy of documents

The description of the system to establish an appro­priate and acceptable level of quality will be embodied in the following hierarchy of documents:

• Part I A Handbook setting out the overall po­licy, management and procedures for the QA programme.

• Pan 2 A Handbook describing the management and procedures covering the quality assurance ac­tions for a department or functional area agreed and authorised for issue by the Station Manager.

• Part 3 Plans, schedules, procedures, instructions, drawings and records for defined items, processes, services, contracts and projects.

1.5.4 Implementation

All nuclear power stations are required to have a system of quality assurance and all new stations will have that requirement written as a condition of their site licence. For existing stations consideration is being given by the Nil to take the formal step of issuing it as a licence condition.