Accession Number:

AD0626861

Title:

PRE-STARTUP HYDRAULIC TESTS AT THE AIR FORCE NUCLEAR ENGINEERING TEST FACILITY.

Descriptive Note:

Final rept. 1961-1965,

Corporate Author:

AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OHIO

Report Date:

1965-10-01

Pagination or Media Count:

50.0

Abstract:

Hydraulic measurements were performed in the reactor to determine coolant distribution in the core. This study consisted of three parts the flow through each of the four control rod fuel followers the coolant velocity through flow channels of representative core positions and, pressure differentials between coolant channels within several core positions. Flow velocity through the shimrod assemblies was of prime interest. This was obtained with a pitot-static tube inserted in the poison section of the dummy assembly, which was then placed in a test loop and calibrated against a previously calibrated Potter turbine flowmeter. The assembly was then inserted into the core and leads were brought out, and was eventually run in each shim-rod position under varying flow conditions. Results were reproducible and verified design values. Flow velocities in the fuel element channels were directly measured using the salt-velocity method. Thirty of the 41 core stationary element positions were tested, and the results, while generally verifying calculated values, did exhibit variation with position. The final phase of the program consisted of instrumenting a dummy fuel element with eleven static pressure probes and to insert this element into the core in various positions to study the absolute and differential pressure between fuel plates, end plates, and side plates of the element in various positions, and to verify the design pressure drop across the core. Author

Subject Categories:

  • Nuclear Power Plants and Fission Reactor Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE