Document: NUREG-0800
Document ID: 78387a51-7717-4e68-94e8-2922e603e6b5
Document Type: srp
Title: DEMINERALIZED WATER MAKEUP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350547.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.3
CFR Part: 
CFR Title: 

Content:
. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and the review supports conclusions of the following type, to be included-in the staff's safety evaluation report: The demineralized water makeup system includes all components and piping associated with the system from the service or municipal water source to the points of discharge to other systems or to a discharge canal. The review has determined the adequacy of the applicant's proposed design criteria and design bases for the demineralized water makeup system, regarding safety-related require- ments (if any) for an adequate supply of reactor coolant purity water during all conditions of plant operation. 9.2.3-4 Rev. 2 - July 1981 Portions of the DMW system that are necessary for safe shutdown or necessary to mitigate the consequences of an accident are classified seismic Category I and Quality Group C. The staff concludes that the design of the demineralized water makeup system is acceptable and meets the requirements of General Design Criteria 2 and 5. This conclusion is based on the following: 1. The applicant has met the requirements of General Design Criterion 2 with respect to safety-related portions of the system being capable of withstanding the effects of earth- quakes. Acceptance is based on meeting the guidance of Regulatory Guide 1.29, Position C-1, if any operation is deemed safety related, and Position C-2, for nonsafety-related portions. Portions of the system are deemed safety related if a failure or malfunction could result in adverse effects on essential systems or components (i.e., necessary for safe shutdown, accident prevention or accident mitigation). 2. The applicant has met the requirements of General Design Criterion 5 with respect to sharing of structures, systems, and components by demonstrating that such sharing does not affect the safe shutdown of either unit in the event of an active or passive failure. V. IMPLEMENTATION The following is