Document: NUREG-0800
Document ID: d4441736-a9bb-45c2-8d16-d23e8312ab08
Document Type: srp
Title: CHEMICAL AND VOLUME CONTROL SYSTEM MALFUNCTION THAT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070717.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.4.6
CFR Part: 
CFR Title: 

Content:
eptable analysis performed for another plant, by comparison with staff calculations for typical plants done by CPB on request, or by independent calculations by the RSBSRXB reviewer. 43 44 The assumed dilution flow rates are reviewed, taking into consideration the system parameters which act to limit the flow. The reviewer examines the flow limiting equipment characteristics provided by the applicant to justify his flow rate assumptions; e.g., if the flow is limited by the 45 charging pump capacity, the assumed flow is compared with the flow for all charging pumps acting at full capacity. If some lesser value of flow is assumed, such as not all pumps operating, or flow limited by a valve, justification must be provided. EICSBHICB is consulted 46 concerning any interlocks for which credit is taken. The results of the analyses are reviewed and compared to the acceptance criteria presented in subsection II of this SRP regarding the time available for the operator to take corrective action. The variations with time during the transient of important parameters are compared to those predicted for other similar plants to see that they are within the range expected. Parameters of particular importance are core reactivity, boron concentration, rate of addition of unborated water, power level, core pressure, and minimum departure from nucleate boiling ratio (DNBR) . 47 48 For standard design certification reviews under 10 CFR Part 52, the procedures above should be followed, as modified by the procedures in SRP Section 14.3 (proposed), to verify that the design set forth in the standard safety analysis report, including inspections, tests, analysis, and acceptance criteria (ITAAC), site interface requirements and combined license action items, meet the acceptance criteria given in subsection II. SRP Section 14.3 (proposed) contains procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and