ASTM - E706
Standard Master Matrix for Light-Water Reactor Pressure Vessel Surveillance Standards, E 706(0)
|Publication Date:||1 January 1987|
|ICS Code (Reactor engineering):||27.120.10|
1.1 This master matrix standard describes a series of standard practices, guides, and methods for the prediction of neutron-induced changes in light-water reactor (LWR) pressure vessel (PV) and support structure steels throughout a pressure vessel's service life (Figs. 1 and 2). Some of these are existing ASTM standards, some are ASTM standards that have been modified, and some are newly proposed ASTM standards. General requirements of content and consistency are discussed in Section 7. More detailed writers' and users' information, justification, and specific requirements for the nine practices, six guides, and five methods are provided in Sections 3, 4, and 5. Referenced documents, references, and a matrix standard steering committee task group are discussed in Sections 2 and 6. The summary-type information that is provided in Sections 3 and 4 is essential for establishing proper understanding and communications between the writers and users of this set of matrix standards. It was extracted from the referenced documents, Section 2 and Table 1 and references (1-1O4) for use by individual writers and users.
1.2 This master matrix is intended as a reference and guide to the preparation, revision, and use of standards in the series and for planning and scheduling purposes, particularly as may concern future activities of E10.05 and E10.02. This index is to help ensure the accomplishment of an objective irrespective of the time required, the number of ASTM committees concerned, or the complexity of the issues involved.
1.3 This master matrix standard provides a guide to ASTM standards related to the energy-critical areas that are to be developed under the category of Fission Reactor Development, Section 10, of Guide E 584 and as discussed in Practice E 583. With reference to Fig. 1 of Guide E 584, this (E 706) master matrix standard is identified with the horizontal and vertical subdivisions, respectively:
1.3.1 Energy Source-Research, Development, and Application Areas:
184.108.40.206 Fission Reactor Development Converter: (a) LWR Pressurized Water (PWR). (b) LWR Boiling Water (BWR).
1.3.2 Standards-Needed Area:
220.127.116.11 Definition of Function Characteristics.
18.104.22.168 Provision to Achieve Function.
22.214.171.124 Quality Assurance and Reliability.
1.4 To account for neutron radiation damage in setting pressure-temperature
1.4.1 Steel chemical composition and microstructure,
1.4.2 Steel irradiation temperature,
1.4.3 Power plant configurations and dimensions, from the core edge to surveillance positions and into the vessel and cavity walls,
1.4.4 Core power distribution,
1.4.5 Reactor operating history,
1.4.6 Reactor physics computations,
1.4.7 Selection of neutron exposure units,
1.4.8 Dosimetry measurements,
1.4.9 Neutron spectral effects, and
1.4.10 Neutron dose rate effects.
1.5 A number of potential methods and standards exist for assuring the adequacy of fracture control of reactor pressure vessel belt lines under normal and accident loads (1-4, 7, 13, 14, 21-28, 29-34, 52-57, 71, 77, 78, 91, 93, Recommended Guide E 509, and 2.3 ASME Standards). As older LWR pressure vessels become more highly irradiated, the predictive capability for changes in toughness must improve. Since during a vessel's service life an increasing amount of information will be available from test reactor and power reactor surveillance programs, better procedures to evaluate and use this information can and must be developed (l-4, 6, 7, 9-15, 17, 21-34, 52-57, 69, 71-73, 77-78, 91-104, and Recommended Guide E 509). This master matrix, therefore, defines the current (1) scope, (2) areas of application, (3) interrelationships, and (4) status and time table of development, improvement, validation, and calibration for a series of 20 ASTM standards, as shown in Figs. 1 and 2.
1.6 Chronology of Past Events and Reference Documentation:
1.6.1 Table 1 provides a chronological listing of important events, results, benefits, and references related to the establishment of this Master Matrix for LWR Pressure Vessel Surveillance Standards. It is intended for use by authors and users of this set of 20 ASTM standards, see Section 7.
1.7 The values stated in SI units are to be regarded as the standard.
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.