Document: NUREG-0800
Document ID: 3b207b59-015a-4145-be01-1f474ceec289
Document Type: srp
Title: MAIN CONDENSER EVACUATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070590.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.2
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Effluent Treatment Systems Branch (ETSB)Plant Systems Branch (SPLB)1 Secondary - NoneEmergency Preparedness and Radiation Protection Branch (PERB)2 I. AREAS OF REVIEW At the construction permit (CP) stage of review, ETSBSPLB reviews the information in the applicant's safety analysis report (SAR) in the specific areas that follow. At the operating license (OL) stage of review, the ETSBSPLB review consists of confirming the design accepted at the CP stage. The main condenser evacuation system (MCES) generally consists of two subsystems: the "hogging" or startup system which initially establishes main condenser vacuum and the normal system which maintains condenser vacuum once it has been established. 1. The ETSBSPLB review of each MCES subsystem includes the design, design objectives, capacity, method of operation, and factors that influence gaseous radioactive material handling, e.g., system interfaces and potential bypass routes. The ETSBSPLB review includes the system piping and instrumentation diagrams (P&IDs). 2. Design features to preclude the possibility of an explosion if the potential for explosive mixtures exists are reviewed by ETSBSPLB. 3. Provisions incorporated to detect explosive gas mixtures and monitor radioactive materials in gaseous effluents from the MCES are reviewed in SRP Sections 11.3 DRAFT Rev.3 - April 1996 10.4.2-2 and 11.5 by ETSBSPLB, with a secondary review performed by PERB with respect to gaseous effluents and radiation monitors for the MCES as defined in these SRP sections.3 Review Interfaces4 In addition, tThe ETSBSPLB will coordinate evaluations of other branches that interface with 5 6 the overall review of the system as follows: A. The Mechanical Engineering Branch (MEBEMEB ) reviews systems quality group 7 8 classifications as part of its primary review responsibility for SRP Section 3.2.2. B. The Quality Assurance and Maintenance Branch (QABHQMB ) reviews systems quality 9 assurance programs as