Document: NUREG-0800
Document ID: b75d082b-2493-4543-981a-2ee136d737cf
Document Type: srp
Title: BTP 8-9-1
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1405/ML14057A433.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8
CFR Part: 
CFR Title: 

Content:
rovided. vi. Annunciation must be provided in the control room for any bypasses incorporated in the design. If the non-Class 1E open phase circuit protection schemes are installed on the offsite power system, the following equivalent protection system requirements specified in 10 CFR 50.55a (h)(2) or 10 CFR 50.55a(h)(3) should be met as a minimum: Justifications for complying with NRC regulations 10 CFR 50.55a (h)(2) or 10 CFR 50.55a(h)(3), “Protection Systems,” should be provided. Otherwise, an alternative to the requirements of 10 CFR 50.55a (h)(2) or 10 CFR 50.55a(h)(3) must be submitted and authorized prior to implementation in accordance with 10 CFR 50.55a(a)(3) or an exemption to these requirements in accordance with 10 CFR 50.12, “Specific exemptions,” must be processed. i. Non-Class 1E equipment should satisfy separation requirements if interface with safety busses is required. ii. An independent dual detection scheme should be provided at the non-Class 1E level for each circuit that feeds the division of the Class 1E power system. iii. The open phase protection should include coincidence logic on a per train/per phase basis to preclude spurious trips of the offsite power source. iv. The open phase protective devices should automatically disconnect the offsite power sources when the setpoints and any time delay limits have been satisfied. v. Capability for test and calibration during power operation should be provided. vi. Annunciation must be provided in the control room for any bypasses incorporated in the design. BTP 8-9-6 Draft Revision 0 – May 2014 VI. Surveillances and Limiting Conditions for Operation The technical specifications should include requirements in accordance with 10 CFR 50.36(c)(2) and (c)(3) for limiting conditions for operations, surveillance requirements, trip setpoints, alarm set points, and maximum and minimum allowable values for the open phase conditions relays and associated time delay devices. 2. Nuclear Power Plants