Document: NUREG-0800
Document ID: 395bd951-6025-480c-a22f-d53f3c4d0155
Document Type: srp
Title: B-9
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550087.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
CFR Part: 
CFR Title: 

Content:
rovided to permit testing during power operation. When this capability can only be achieved by overlapping tests, the test scheme must be such that the tests do, in fact, overlap from one test segment to another. Test procedures that require disconnecting wires, installing jumpers, or other similar modifications of the installed equipment are not acceptable test procedures for use during power operation. The review of test and calibration provisions should be coordinated with the organization responsible for the review of technical specification format and content to confirm that the system design supports the types of testing required by the technical specifications. The system design should also support the compensatory actions required by technical specifications when limiting conditions for operation are not met. Typically, the design should allow for tripping or bypass of individual functions in each protection system channel. 4.11. Channel Bypass and Removal from Operation (IEEE Std. 279-1971 Clause 4.11) The review of bypass and removal from operations should be coordinated with the organization that is responsible for the format of technical specifications to confirm that the provisions for this bypass are consistent with the required actions of the proposed plant technical specifications. 4.12. Operating Bypass (IEEE Std. 279-1971 Clause 4.12) The requirement for automatic removal of operational bypasses means that the reactor operator shall have no role in such removal. The operator may take action to prevent the unnecessary initiation of a protective action.