Standard

IEEE 344

Revidert

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Omfang

ForwardThis revision of IEEE Std 344-1987 was developed to expand and clarify guidance for developing programs to seismically qualify Class 1E equipment for nuclear power generating stations. Specific areas of amplification included are based on experience gained since 1987. The Class 1E equipment to be qualified by procedures or standards based upon this revised recommended practice can be of many forms; therefore, this recommended practice presents the guidelines for many acceptable seismic qualification methods with the intent of permitting the user to make a judicious selection from the options offered. This revised recommended practice attempts to define more fully the procedures by which Class 1E equipment can be seismically qualified. It presents the methods that are known by the working group to be practices that are acceptable to the nuclear power generation industry, its equipment suppliers, and the industrial test and analysis facilities utilized by the industry. The clarification and update of methods in this recommended practice reflect an effort to recommend state-of-the-art techniques at the time of publication. The methods and definitions presented in this revision are not intended to limit other seismic qualification techniques. Exceptions to these recommended practices may be made at any time where it can be shown that the substituted procedure verifies that the equipment can perform its safety function with justifiable methodology. The basis for a technical justification may be, but is not limited to, partial analysis, tests on similar equipment, experience data, or a combination thereof. Engineering judgment may be used in conjunction with these methods. Exceptions to these guidelines, which are founded on a broad base of actual test, analysis, and earthquake experience, supplemented by engineering judgment, may be used to meet the intent of this standard, provided the methods are justified. The Foreword of the 1987 revision of this standard noted that experience-based methods for seismic qualification of equipment were under development, and Clause 9 of the 1987 revision contained interim guidance for the use of experience data for this purpose. Since then, development of the experience-based approach has been furthered by the Seismic Qualification Utility Group (SQUG). The SQUG approach was used at many nuclear power plants to resolve USI A-46. It has also been adopted, in part, and used by other governmental and industrial organizations. Accordingly, Clause 10 and relevant parts of Clause 11 of this revision of the standard have been rewritten to incorporate the results of this development. Use of the experience-based approach in this recommended practice is acceptable for use in nuclear plants if it is consistent with the plant’s licensing/regulatory design basis. Issues related to use of median-centered in-structure response spectra for the earthquake experience-based method, operating basis earthquake (OBE) requirements associated with the test experience method, and generation of a test-experience spectrum were considered at length by the working group in the preparation of this document. Further guidance for qualification of replacement components and devices within an existing, previously qualified larger equipment assembly by the earthquake experience-based method is deferred to the next revision of the standard. Special consideration could be added to determine how to extend earthquake experience data to replacement of components and devices in a previously qualified equipment assembly so that there is sufficient detail and traceability in the areas of equipment performance (physical configuration, operational, and dynamic), installation, excitation, and demonstration of safety function. Adherence to this recommended practice to obtain equipment seismic qualification alone will not suffice for assurance of public health and safety since it is the integrated performance of structures, fluid systems, instrumentation systems, electrical systems, and man/machine interface systems of a nuclear power generating station that establishes totally safe operating conditions. This standard was prepared by Subcommittee 2 Working Group 2.5 (Seismic) of the Nuclear Power Engineering Committee of the IEEE Power Engineering Society. Notice to users Errata Errata, if any, for this and all other standards can be accessed at the following URL: http:// standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check this URL for errata periodically. Interpretations Current interpretations can be accessed at the following URL: http://standards.ieee.org/reading/ieee/interp/ index.html. Patents Attention is called to the possibility that implementation of this standard may require use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying patents or patent applications for which a license may be required to implement an IEEE standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. Participants At the time this standard was balloted, Working Group SC 2.5 (Seismic) of Subcommittee 2 (Qualification) of the Nuclear Power Engineering Committee had the following membership: James Parello, a Chair a Member of the Writing Group b Past Chair of the Working Group Mostafa A. Ahmeda Paul D. Baughmana Suresh Channarasappaa Garry V. Chapmana Pei-Ying Chena Walter Djordjevica Robert Enis Gregory Ferguson Gregory Hardy Paul Ibanez Johnny Jenkins Robert Kassawara Mohsin Khan Bruce M. Lorya William LaPayb Darren Martin Donald P. Moorea Karur S. Parthasarathy Daniel J. Pomerening John M. Richardsa William Schmidta K. M. Skreinerb Donald Smith Richard G. Starcka At the time this standard was balloted, Subcommittee 2 (Qualification) under the Nuclear Power Engineering Committee had the following membership: Satish K. Aggarwal, Chair Robert Lofaro, Secretary At the time this standard was balloted, the Nuclear Power Engineering Committee had the following membership: John P. Carter, Chair John J. Disosway, Vice Chair David A. Horvath, Secretary Bohumil Bartonicek Paul D. Baughman Anup K. Behera Brij M. Bharteey Thomas Brewington Nissen M. Burstein Craig R. Butcher Steve Casadevall Suresh Channarasappa Garry V. Chapman Javier Alonso Chicote Marty Chipkin Jeff Chivers Sun Yeong Choi .James M. Dean Liviu Nicolae Delcea Dennis E. Dellinger Philip DiBenedetto Quang H. Duong Frank Drumm Wells D. Fargo Artur J. Faya Robert Francis James F. Gleason Patrick Gove William L. Hadovski Peter Helander Thomas R. Hencey III Jerrell C. Henley David A. Horvath Craig S. Irish Serena A. Jagtiani-Krause Sushant Kapur Mohsin Khan Henry Leung Bruce M. Lory Darin R. Martin P. G. McQuillan Daniel R. Mikow Todd Mitton Asif Mohiuddin Edward Mohtashemi Carole Monchy-Leroy Bill Newell James Parello Janez Pavsek Daniel J. Pomerening Robert Queenan John M. Richards Fredrick Roy Steve Sandberg Glen E Schinzel Roderick Simms Kjell Spang Richard G. Starck Marek Tengler Marco Van Uffelen Laszlo Varga Carl Weber John Wheless John White Toni Wittamore Richard T. Wood Toshio Yamamoto Satish K. Aggarwal Ijaz Ahmad George Attarian Farouk D. Baxter Brij M. Bharteey Wesley W. Bowers Daniel F. Brosnan Nissen M. Burstein Robert C. Carruth Surin K. Dureja Stephen A. Fleger Robert Fletcher Robert B. Fuld James F. Gleason Dale Goodney Britton P. Grim Paul R. Johnson Harvey C. Leake John D. MacDonald J. Scott Malcolm Alexander Marion Michael H. Miller Gerald L. Nicely Roger D. Parker Glen E. Schinzel Neil P. Smith James E. Stoner John Taylor James E. Thomas Terence J. Voss John Waclo John White Paul L. Yanosy, Sr. David J. Zaprazny The following members of the individual balloting committee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. When the IEEE-SA Standards Board approved this standard on 8 December 2004, it had the following membership: Don Wright, Chair Steve M. Mills, Vice Chair Judith Gorman, Secretary *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Satish K. Aggarwal, NRC Representative Richard DeBlasio, DOE Representative Alan Cookson, NIST Representative Don Messina IEEE Standards Project Editor Satish K. Aggarwal Faropuk D. Baxter Wesley W. Bowers Thomas Brewington Daniel F. Brosnan Nissen M. Burstein Salvatore Carfagno John P. Carter Suresh Channarasappa Garry V. Chapman Dr. Guru Dutt Dhingra Philip DiBenedetto John J. Disosway Surin Dureja Amir El-Sheikh Jay Forster James F. Gleason Lawrence Gradin Britton P. Grim Randall Groves Ajit Gwal Paul R. Johnson Harvey C. Leake John D. MacDonald G. Michel William Mindick James Parello Roger D. Parker Fredrick Roy James Ruggieri Neil P. Smith Richard G. Starck James E. Stoner James E. Thomas John Ullo Terence J. Voss John White Paul L. Yanosy, Sr. Li Zhang Chuck Adams Stephen Berger Mark D. Bowman Joseph A. Bruder Bob Davis Roberto de Marca Boisson Julian Forster* Arnold M. Greenspan Mark S. Halpin Raymond Hapeman Richard J. Holleman Richard H. Hulett Lowell G. Johnson Joseph L. Koepfinger* Hermann Koch Thomas J. McGean Daleep C. Mohla Paul Nikolich T. W. Olsen Ronald C. Petersen Gary S. Robinson Frank Stone Malcolm V. Thaden Doug Topping Joe D. WatsonScopeThis document describes recommended practices for establishing seismic qualification procedures that will yield quantitative data to demonstrate that the Class 1E equipment can meet its performance requirements during and/or following one safe shutdown earthquake (SSE) event preceded by a number of operating basis earthquake (OBE) events. The test, analysis, or experienced-based evaluation methods described herein may be used to yield data to demonstrate Class 1E equipment performance claims or to evaluate and verify performance of devices and assemblies as part of an overall qualification effort.

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