Cold Vacuum Drying (CVD) Set Point Determination

PHILIPP, B.L.

COGEMA (United States)

关键词: Safety Engineering;    Vacuum Systems;    Switches;    Drying;    Spent Fuel Casks;   

DOI  :  10.2172/801152
RP-ID  :  SNF-4451, Rev.1
RP-ID  :  AC06-96RL13200
RP-ID  :  801152

美国|英语

来源: UNT Digital Library

【 摘 要 】

This document provides the calculations used to determine the error of safety class signals used for the CVD process These errors are used with the Parameter limits to arrive at the initial set point. The Safety Class Instrumentation and Control (SCIC) system provides active detection and response to process anomalies that, if unmitigated would result in a safety event. Specifically actuation of the SCIC system includes two portions. The portion which isolates the MCO and initiates the safety-class helium (SCHe) purge, and the portion which detects and stops excessive heat input to the MCO on high tempered water MCO inlet temperature. For the MCO isolation and purge the SCIC receives signals from MCO pressure (both positive pressure and vacuum) helium flow rate, bay high temperature switches, seismic trips and time under vacuum trips.