Document: NUREG-0800
Document ID: c1cdbeda-5248-4d81-880d-2950ea4b0e03
Document Type: srp
Title: - 15.4.5-2
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550007.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.4.4
CFR Part: 
CFR Title: 

Content:
Revision 2 - March 2007 3. Pressurized water reactor (PWR) with loop isolation valves: Startup of a pump in an initially isolated inactive reactor coolant loop where the rate of flow increase is limited by the rate at which the isolation valves open. 4. PWR without loop isolation valves: Startup of a pump in an inactive loop. 5. ESBWR: Abnormal startup sequence for an ESBWR. 6. COL Action Items and Certification Requirements and Restrictions. For a DC application, the review will also address COL action items and requirements and restrictions (e.g., interface requirements and site parameters). For a COL application referencing a DC, a COL applicant must address COL action items (referred to as COL license information in certain DCs) included in the referenced DC. Additionally, a COL applicant must address requirements and restrictions (e.g., interface requirements and site parameters) included in the referenced DC. The review of the core flow increase AOOs considers the sequence of events, the analytical model, the values of parameters used in the analytical model, and the predicted consequences of the AOOs. The reviewer concentrates on the need for the reactor protection system and operator action to secure and maintain the reactor in a safe condition. The analytical methods are reviewed to ascertain whether the mathematical modeling and computer codes have been previously reviewed and accepted by the staff. If a referenced analytical method has not been previously reviewed, the reviewer initiates a generic evaluation of the new analytical model. In addition, the values of all the parameters used in the new analytical model, including the initial conditions of the core and system, are reviewed. The predicted results of the AOOs are reviewed to ensure that the consequences meet the acceptance criteria given in Subsection II below. Furthermore, the results of the AOOs are reviewed to ascertain that the values of pertinent system parameters are within ranges expected