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IEEE 317-2025

IEEE Standard for Electric Penetration Assemblies in Containment Structures for Nuclear Power Generating Stations

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IEEE 317-2025

IEEE Standard for Electric Penetration Assemblies in Containment Structures for Nuclear Power Generating Stations

PUBLISH DATE 2025

PAGES 53

IEEE 317-2025

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Revision Standard - Active. An electric penetration assembly is an assembly of insulated electric conductors, conductor seals, module seals (if any), and aperture seals that provide the passage of the electric conductors through a single aperture in the nuclear containment structure, while providing a pressure barrier between the inside and the outside of the containment structure. The electric penetration assembly includes terminal (junction) boxes, terminal blocks, connectors and cable supports, and splices which are designed and furnished as an integral part of the assembly. Requirements for the design, construction, qualification, test, and installation of electric penetration assemblies in nuclear containment structures for stationary nuclear power generating stations are prescribed in this standard. Criteria intended to facilitate the determination of the features of design, construction, test, qualification, and installation relative to the electric penetration assemblies of primary containments of the nuclear facilities that comply with the United States Nuclear Regulatory Commission’s Code of Federal Regulations (10CFR50) are presented in this standard.

This standard prescribes the requirements for the design, construction, qualification, test, and installation of electric penetration assemblies in nuclear containment structures for stationary nuclear power generating stations. The requirements for external circuits that connect to penetration assemblies are beyond the scope of this standard. This standard does not include requirements for operation, maintenance, or periodic testing after installation.

This standard presents criteria to facilitate the determination of the features of design, construction, test, qualification, and installation relative to the electric penetration assemblies of containments of nuclear facilities.


SDO	IEEE: Institute of Electrical and Electronics Engineers
Document Number	317
Publication Date	Aug. 8, 2025
Language	en - English
Page Count	53
Revision Level
Supercedes
Committee	Nuclear Power Engineering Committee

Publish Date	Document Id	Type
Aug. 8, 2025	317-2025	Revision
July 17, 2013	317-2013	Revision
Dec. 10, 2003	317-1983	Revision
May 24, 1976	317-1976	Revision
Dec. 1, 1972	317-1972	Revision
April 30, 1971	317-1971	Revision

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IEEE 317-2025

IEEE Standard for Electric Penetration Assemblies in Containment Structures for Nuclear Power Generating Stations

IEEE 317-2025

Document Information

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