In-Service Inspection of Nuclear Power Plants - gnssn - International ...

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This publication is no longer valid Please see http://www-ns.iaea.org/standards/ 3.6. RECORDS AND DOCUMENTATION 3.6.1. The records necessary for the proper implementation of the in-service inspection programme should be readily available to the operating organization and clearly identifiable (e.g. data, name of plant and operating organization) and should include: (1) specifications and as-built drawings; (2) manufacturing, construction, and pre-service examination data reports; (3) the in-service inspection programme and detailed examination and test procedures; (4) examination and test reports, charts and diagrams; (5) calibration records; (6) acceptance standards; (7) evaluations. The IAEA Safety Guides on Quality Assurance provide recommendations applicable to such records. 3.6.2. Under item (1) of Section 3.6.1 are included component drawings, material specifications, heat treatment records, welding records, records of the manufacturing process, fabrication and installations specifications and drawings, records of acceptance of deviations from specifications, and other documents that are specified by the regulatory body. 3.6.3. The records for each examination shall contain the following: (1) all pertinent information such as component identification, location and size of inspection area, examination technique, type and characteristics of examination equipment, type and characteristics of sensor, calibration equipment, sensitivity standards, etc., such that the in-service inspection could be repeated and comparable results obtained; (2) all ultrasonic indications that are in excess of the minimum recording level and all pertinent information concerning the indication (e.g. location, dimensions and type of flow); (3) all recordings (e.g. radiograph, photograph, magnetic tape, chart); (4) comparisons with previous examination results and evaluations; (5) evaluations and reports. 3.6.4. Records which are directly applicable to an individual component should be maintained for the life of the component. Other records should be maintained for the life of the plant, and should include as a minimum: (1) an appropriate file index; (2) design specifications and requirements; 16
This publication is no longer valid Please see http://www-ns.iaea.org/standards/ (3) stress reports and stress calculations; (4) as-built drawings; (5) reports of material properties, including the results of examinations and the names of the personnel interpreting the results; (6) records of heat treatments; (7) samples of materials, to provide information on material properties, heat treatment and other relevant information for future reference; (8) a record of the manufacturing, construction, and pre-service examination. 4. IMPLEMENTATION OF THE IN-SERVICE INSPECTION PROGRAMME 4.1. INSPECTION PROGRAMME FOR INDIVIDUAL COMPONENTS The plant inspection programme will make it possible to define the inspections for each component and system subject to ISI. It should contain at least: — designation of the component/system; — designation of the examination areas for pre- and in-service inspections; — examination methods, techniques and procedures; — examination restrictions; — ISI interval and period; — area and volume examined. The programme document should be approved by the regulatory body if required. It is recommended that the content be detailed as follows: — component/system operating and design dates; — location, access; — insulation; — base codes for establishing the ISI programme; — surface conditions; — examination possibilities (e.g. for non-scheduled examinations); — drawings of the component; — detailed drawings of the examination areas; — detailed instructions additional to the general procedures. Examples of inspection programmes for some components are given in Annex IV. 17
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