Document: NUREG-0800
Document ID: 1b73c7c7-6991-449e-9bea-daaea39fefa5
Document Type: srp
Title: INSTRUMENTATION AND CONTROLS - INTRODUCTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550076.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
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CFR Title: 

Content:
es rapid control rod insertion to mitigate the consequences of anticipated operating occurrences or design basis events. RTS is discussed in Section 7.2 of the SAR. B. The ESFAS initiates and controls safety equipment that remove heat or otherwise assist with maintaining the integrity of the physical barriers to radioactive release - cladding, reactor coolant pressure boundary, and containment. ESFAS is discussed in Section 7.3 of the SAR. C. Safe shutdown systems function to achieve and maintain a safe shutdown condition of the plant. The safe shutdown systems include I&C systems used to maintain the reactor core in a subcritical condition and provide adequate core cooling to achieve and maintain both hot and cold shutdown conditions. Safe shutdown systems are discussed in Section 7.4 of the SAR. D. Information systems important to safety provide information for the safe operation of the plant during normal operation, anticipated operational occurrences, and accidents and include systems that provide information for manual initiation and control of safety systems. These systems indicate that plant safety functions are being accomplished and provide information from which appropriate actions can be taken to mitigate the consequences of anticipated operational occurrences and accidents. Information systems important to safety also provide information on the normal status and the bypassed and inoperable status of safety systems. Information systems important to safety are discussed in Section 7.5 of the SAR. E. Interlock systems important to safety operate to reduce the probability of occurrence of specific events or maintain safety systems in a state to assure their availability in an accident. These systems differ from protection systems in that interlock system safety action is taken prior to, or to prevent accidents. Interlock systems important to safety are discussed in Section 7.6 of the SAR. F. Control systems are used in normal operations and in control plant