Document: NUREG-0800
Document ID: 9633fe22-df24-4eb8-ae45-d5bf4598a3d1
Document Type: srp
Title: MAIN CONDENSER EVACUATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350080.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) Secondary - None I. AREAS OF REVIEW At the construction permit (CP) stage of review, ETSB 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 ETSB 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 ETSB 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 ETSB 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 ETSB. 3. Provisions incorporated to detect explosive gas mixture and monitor radioactive | materials in gaseous effluents from the MCES are reviewed in SRP Sections 11.3 and 11.5 by ETSB. In addition, the ETSB will coordinate evaluations of other branches that interface with the overall review of the system as follows: Mechanical Engineering Branch (MEB) reviews systems quality group classifications as part of its primary review responsibility for SRP Section 3.2.2. Quality Assurance Branch (QAB) reviews systems quality assurance programs as part of its primary review responsibility for SRP Sections 17.1 and 17.2. Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and operate nuclear power plants. These documents are made available to the public as pan