Revision of IEEE Std 741-1997. This standard prescribes criteria that establish protection requirements for Class 1E power systems and equipment. It describes the purpose of and the means for obtaining protection from electrical and mechanical damage, or failures that can occur within a time period that is shorter than that required for operator action. It includes testing and surveillance requirements. It does not include plant physical design requirements to protect against events such as pipe whip, fire, dropped load, etc.
- Standard Committee
- PE/NPEC - Nuclear Power Engineering Committee
- Status
- Superseded Standard
- PAR Approval
- 2005-09-22
- Superseded by
- 741-2017
- Superseding
- 741-1997
- Board Approval
- 2007-09-27
- History
-
- ANSI Approved:
- 2008-03-24
- Published:
- 2008-02-01
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/NPEC - Nuclear Power Engineering Committee
- Working Group
-
WG_4.7 - Protection of Class 1E Power Systems Working Group
- IEEE Program Manager
- Christian Orlando
Contact Christian Orlando - Working Group Chair
- Mark Bowman
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
P741
Standard for Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations
This standard provides the principal design criteria, design features, and testing requirements for the protection of Class 1E power systems and equipment supplied from those systems. It identifies special protection features that are needed where the requirements of nuclear power generating stations (NPGS) necessitate supplementing accepted industry practices.
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
741-2022
IEEE Standard for Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations
Criteria that establish protection requirements for Class 1E power systems and equipment are prescribed in this standard. The purpose of and the means for obtaining protection from electrical and mechanical damage, or failures that can occur within a time period that is shorter than that required for operator action, are described. Testing and surveillance requirements are included. Plant physical design requirements to protect against events such as pipe whip, fire, dropped load, etc., are not included.
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
741-1997
IEEE Standard Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations
Superseded by IEEE Std 741-2007. This standard prescribes criteria that establish protection requirements for Class 1E power systems and equipment. It describes the purpose of and the means for obtaining protection from electrical and mechanical damage, or failures that can occur within a time period that is shorter than that required for operator action. It includes testing and surveillance requirements. It does not include plant physical design requirements to protect against events such as pipe whip, fire, dropped load, etc.
741-2017
IEEE Standard for Criteria for the Protection of Class 1E Power Systems and Equipment in Nuclear Power Generating Stations
Criteria that establish protection requirements for Class 1E power systems and equipment are prescribed in this standard. The purpose of and the means for obtaining protection from electrical and mechanical damage, or failures that can occur within a time period that is shorter than that required for operator action, are described. Testing and surveillance requirements are included. Plant physical design requirements to protect against events such as pipe whip, fire, dropped load, etc., are not included.
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
No Inactive-Reserved Standards