Operating experience feedback report -- turbine-generator overspeed protection systems: Commercial power reactors. Volume 11

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Description

This report presents the results of the US Nuclear Regulatory Commission`s Office for Analysis and Evaluation of Operational Data (AEOD) review of operating experience of main turbine-generator overspeed and overspeed protection systems. It includes an indepth examination of the turbine overspeed event which occurred on November 9, 1991, at the Salem Unit 2 Nuclear Power Plant. It also provides information concerning actions taken by other utilities and the turbine manufacturers as a result of the Salem overspeed event. AEOD`s study reviewed operating procedures and plant practices. It noted differences between turbine manufacturer designs and recommendations for operations, maintenance, and testing, ... continued below

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115 p.

Creation Information

Ornstein, H.L. April 1, 1995.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 28 times . More information about this report can be viewed below.

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Description

This report presents the results of the US Nuclear Regulatory Commission`s Office for Analysis and Evaluation of Operational Data (AEOD) review of operating experience of main turbine-generator overspeed and overspeed protection systems. It includes an indepth examination of the turbine overspeed event which occurred on November 9, 1991, at the Salem Unit 2 Nuclear Power Plant. It also provides information concerning actions taken by other utilities and the turbine manufacturers as a result of the Salem overspeed event. AEOD`s study reviewed operating procedures and plant practices. It noted differences between turbine manufacturer designs and recommendations for operations, maintenance, and testing, and also identified significant variations in the manner that individual plants maintain and test their turbine overspeed protection systems. AEOD`s study provides insight into the shortcomings in the design, operation, maintenance, testing, and human factors associated with turbine overspeed protection systems. Operating experience indicates that the frequency of turbine overspeed events is higher than previously thought and that the bases for demonstrating compliance with NRC`s General Design Criterion (GDC) 4, Environmental and dynamic effects design bases, may be nonconservative with respect to the assumed frequency.

Physical Description

115 p.

Notes

INIS; OSTI as TI95011770

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  • Other Information: PBD: Apr 1995

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  • Other: TI95011770
  • Report No.: NUREG--1275-Vol.11
  • DOI: 10.2172/71337 | External Link
  • Office of Scientific & Technical Information Report Number: 71337
  • Archival Resource Key: ark:/67531/metadc702577

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  • April 1, 1995

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 8, 2016, 12:42 p.m.

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Ornstein, H.L. Operating experience feedback report -- turbine-generator overspeed protection systems: Commercial power reactors. Volume 11, report, April 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc702577/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.