Document: NUREG-0800
Document ID: c3be7591-d074-48a8-bb9c-4dcdfccd0ddf
Document Type: srp
Title: Draft Revision 6 – August 2015
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159A959.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
test equipment should also be provided. The balance of surveillance and test functions that are not performed by the automatic test feature should be performed manually to meet the intent of RG 1.118. In addition, the automatic test feature function should conform to the same requirements and considerations (e.g., test interval) as the manual function. The safety classification and quality of the hardware and software used to perform periodic testing should be equivalent to that of the tested system. The design should maintain channel independence, maintain system integrity, and meet the single-failure criterion during testing. Commercial digital computer-based equipment used to perform periodic testing should be appropriately qualified for its function. Actions on Failure Detection The design should have either the automatic or manual capability to take compensatory action on detection of any failed or inoperable component. The design capability and plant technical specifications, operating procedures, and maintenance procedures should be consistent with each other. Plant procedures should specify manual compensatory actions and mechanisms for recovery from automatic compensatory actions. Mechanisms for operator notification of detected failures should comply with the system status indication provisions of IEEE Std 603-1991 and should be consistent with, and support, plant technical specifications, operating procedures, and maintenance procedures. 4. Review Procedures The surveillance test and self-test features of each digital computer-based module, as well as each system incorporating digital computers, are reviewed to verify conformance with acceptance criteria. BTP 7-17-7 Draft Revision 6 – August 2015 The review of surveillance test provisions should confirm that these provisions are adequate to fulfill the fundamental intent of each surveillance test. Because of design and architectural differences between analog and digital systems, traditional provisions