Document: NUREG-0800
Document ID: 96afb1d6-6ce9-41e4-b4ec-1fc7747bc0b2
Document Type: srp
Title: Revision 8 – January 2021
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML2033/ML20339A647.pdf
Revision Date: 2023-05
Chapter: 7
Section ID: 7
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entifies the minimum inventory of displays and controls in the MCR, and this minimum inventory allows the operator to effectively monitor and control the critical safety parameters of reactivity, core heat removal, and reactor coolant inventory. The minimum inventory also allows the operator to initiate and monitor the status of containment isolation and containment integrity. c. The proposed manual operator actions are prescribed by licensee-approved plant procedures and subject to appropriate training. d. The manual controls for critical safety functions are at the system or division level and are located within the MCR. For plants licensed to allow one division to be continuously out of service, the diverse manual actuation applies to at least one division that is in BTP 7-19-31 Revision 8 – January 2021 service. e. If NSR equipment is used, its quality and reliability are adequate to support the manual operator action during the associated event conditions. Equipment quality can be verified, for example, based on the alternative treatment requirements developed for implementation of 10 CFR 50.69, or on the ATWS quality assurance guidance in GL 85-06. f. The displays and controls are independent and diverse from the equipment performing the same functions within the proposed safety-related DI&C systems. These displays and controls are not affected by postulated CCFs that could disable the corresponding functions within the proposed safety-related DI&C systems. 5. Information for Interdisciplinary NRC Staff Review In addition to conducting the review described in the preceding sections, the reviewer should also work with NRC staff in other disciplines to identify other areas that may be affected by CCFs. The technical staff should review the following for potential interdisciplinary concerns: a. the applicant’s documentation of its safety-significance determination for a proposed DI&C system and the supporting technical basis. If risk insights from