Document: NUREG-0800
Document ID: e30deb08-2b02-4f51-8fa9-a8a287af29dc
Document Type: srp
Title: MAIN CONDENSERS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350078.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.1
CFR Part: 
CFR Title: 

Content:
ontrol features that determine and verify that the MC is operating in a correct mode. 3. The reviewer uses engineering judgment and the results of failure modes and effects analyses to determine that: a. The failure of a main condenser and the resulting flooding will not preclude operation of any essential systems. Reference to sections of the SAR describing plant features and the general arrangement and layout drawings will be necessary, as well as the SAR tabulation of seismic design classifications for structures and systems. Statements in the SAR that verify that the above conditions are met are acceptable. b. The system, in conjunction with the main steam system, has provisions to detect loss of condenser vacuum and to effect isolation of the steam source. For direct cycle plants, it will be acceptable if the detection system in the MC can actuate the main steam isolation valves to limit the quantity of steam lost from the condenser. c. Design provisions have been incorporated into the MC that will preclude component or tube failures due to steam blowdown from the turbine bypass system. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been .provided and his review supports conclusions of the following type, to be included in the staff's safety evaluation report: The main condenser system (MC) includes all components and equipment from the turbine exhaust to the connections and interfaces with the main condensate and other systems. The scope of review of the main condenser system for the plant included layout drawings, piping and instrumentation diagrams, and descriptive information for the main condenser system and supporting systems that are essential to its operation. 10.4.1-3 Rev. 2 - July 1981 The basis for acceptance of the main condenser system in our review was conformance of the design, design criteria, and design bases to the Commission's regulation as set forth in GDC 60. The staff concludes that the main condenser system