Document: NUREG-0800
Document ID: 9697248b-d015-42be-8808-2202db24977a
Document Type: srp
Title: STANDBY LIQUID CONTROL SYSTEM (BWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070680186.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.5
CFR Part: 
CFR Title: 

Content:
maximum solution temperature to ensure net positive suction head for the positive displacement pumps for the older BWRS, as indicated by NRC Information Notice (IN) 91-012. In addition, adequate means should also be provided to maintain system equivalent flow capacity in ATWS transient scenarios, considering system relief valve settings and capacity, as indicated in IN 2001-013. F. The reviewer determines that the controls and the summary of operating and test procedures for neutron absorber addition are adequate. 2. The reviewer verifies that the safety function of the system will be maintained as required in the event of adverse environmental phenomena, such as earthquakes, tornadoes, hurricanes, and floods, or in the event of certain pipe breaks or loss of offsite power. The reviewer uses engineering judgment, failure modes and effects analyses, and the results of reviews performed under other SRP sections, as applicable, to determine the following: A. The failure of systems not designed to seismic Category I standards and located close to essential portions of the system, or of nonseismic structures that house, support, or are close to essential portions of the SLCS, will not preclude operation of the SLCS. Reference to SAR sections describing site features and the general arrangement and layout drawings will be necessary, as well as the SAR tabulation of seismic design classifications for structures and systems. Statements in the SAR that verify that the above conditions are met are acceptable. B. The SLCS is protected from the effects of floods, hurricanes, tornadoes, and internally or externally generated missiles. The SRP Section 3 series discusses and evaluates in detail flood protection and missile protection criteria. The location and the design of the system, structures, and pump rooms (cubicles) are reviewed to determine that the degree of protection provided is adequate. A statement to the effect that the system is located in a seismic Category I