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:
ntrol measures to prevent the buildup of poten- tially explosive mixtures. This review is conducted by ETSB concurrently with its review as outlined in SRP Section 11.3 for a gaseous radioactive waste management system. ETSB will also determine if the applicant's design includes adequate provisions to stop continuous leakage paths after an explosion. 4. ETSB reviews the quality assurance for the design, construction, and opera- tional phases for the MCES according to the guidelines of Regulatory Guides 1.33 and 1.123 (Refs. 4 and 5). Exceptions are transmitted to QAB, which has primary responsibility under SRP Sections 17.1 and 17.2. IV. EVALUATION FINDINGS ETSB verifies that sufficient information has been provided and that the review is adequate to support conclusions of the following type, to be included in the staff's safety evaluation report: The main condenser evacuation system includes equipment -and instruments to establish and maintain condenser vacuum and to prevent an uncontrolled release of radioactive material to the environment. -The scope of our review included the system capability to transfer radioactive gases to the gaseous waste processing system or ventilation exhaust systems, the design provi- sions incorporated to monitor and control releases of radioactive materials in effluents. The staff has reviewed the applicant's system descriptions, 30.4.2-3 Rev. 2 - July 1981 piping and instrumentation diagrams, and design criteria for the components of the main condenser evacuation system. The staff concludes that the MCES design is acceptable in that the applicant has met the requirements of General Design Criteria 60 and 64 with respect to the control and monitoring of releases of radioactive materials to the environment by providing a controlled and monitored MCES. The applicant has met the requirements of industrial standard "Standards for Steam Surface Condensers" that has been reviewed by the staff and determined to be appropriate for this