Document: NUREG-0800
Document ID: 73a7c7ff-f0ac-467b-ba1d-0fb71e328868
Document Type: srp
Title: examines this margin to ensure that specified acceptable fuel design limits are not
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070705.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.3.2
CFR Part: 
CFR Title: 

Content:
exceeded. Meeting the requirements of GDC 26 provides a level of assurance that appropriate margins are included to accommodate malfunctions (including stuck rods) of the reactivity control system, thereby minimizing the possibility that specified acceptable fuel design limits are not exceeded.43 15.3.1-7 DRAFT Rev. 2 - April 1996 III. REVIEW PROCEDURES The procedures below are used during both the construction permit (CP), combined license (COL), and operating license (OL) reviews. During the CP review, the values of system 44 parameters and setpoints used in the analysis will be preliminary in nature and subject to change. At the OL or COL review statestage, final values should be used in the analysis, and the 45 46 reviewer should compare these to the limiting safety system settings included in the proposed technical specifications. The description of each of the loss of reactor coolant flow transients presented by the applicant in the SAR is reviewed by RSBSRXB regarding the occurrences leading to the initiating event. 47 The sequence of events from initiation until a stabilized condition is reached is reviewed to ascertain: 1. The extent to which normally operating plant instrumentation and controls are assumed to function. 2. The extent to which plant and reactor protection systems are required to function. 3. The extent to which credit is taken for the functioning of normally operating plant 48 systems. 4. The extent to which the operation of engineered safety systems that are is required. 49 5. The extent to which operator actions are required. 6. That appropriate margin for malfunctions, such as stuck rods, are accounted for. If the SAR states that a particular loss of flow transient is not as limiting as some other similar transients, the reviewer evaluates the justification presented by the applicant. The reviewer confirms that all types of flow loss transients are considered, e.g., pump trips during two-, three-, and four-loop operation. The applicant is