Document Details
PURL
Title:
CALCULATIONS CONCERNING LOCATION AND TIME CONSTANT OF TEMPERATURE SENSING ELEMENTS.
Author(s):
Subject Terms:
COOLANT TEMPERATUREFUELS AND MATERIALS ENGINEERINGHANFORD PRODUCTION REACTORSINSTRUMENTATIONREACTOR TECHNOLOGYTHERMOMETRY
Document Location:
DOE Public Reading Room - Hanford Battelle P.O. Box 999 MS H2-53 Richland WA 99352 (509)372-7443
Document Type:
REPORT
Publication Date:
1956 May 15
Declassification Date:
1992 Oct 13
Declassification Status:
Declassified
Document Pages:
23
Accession Number:
RL-1-363777
Document Number(s):
HW-43027
Originating Research Org.:
GE - HAPO
OpenNet Entry Date:
2004 Feb 24
OpenNet Modified Date:
2015 Aug 28
Description/Abstract:
DISCUSSES THERMOMETER ELEMENT DESIGN AND LOCATION. RECOMMENDS (1) THE DIFFERENCE IN EFFECTIVENESS DUE TO LOCATION ON EITHER THE NOZZLE END OR THE CROSS HEADER END OF THE PIGTAIL IS INSIGNIFICANT AS LONG AS SELF-PRESSURIZING CRITICAL FLOW OCCURS DOWNSTREAM OF THE THERMOMETER ELEMENT (2) THE SHORTEST PERIOD THERMOMETER REASONABLY AVAILABLE SHOULD BE USED (3) ELEMENTS WITH A ONE SECOND RESPONSE ARE ONLY ABOUT 10% WORSE THAN AN INFINITELY FAST RESPONSE ELEMENT IN TERMS OF THE RATIO OF TRIP POWER TO INITIAL POWER (4) A SYSTEM HAVING THE TRIP CHARACTERISTICS OF AN INFINITELY FAST THERMOMETER SYSTEM CAN BE OBTAINED BY ADJUSTING THE PANELLIT GAGES TO BE SENSITIVE TO POWER CHANGES (5) THE PERFORMANCE OF ALL THESE SYSTEMS MAY BE IMPROVED BY DECREASING THE WATER TRANSIT TIME BETWEEN THE END OF THE SLUGS AND THE REAR NOZZLE.