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Title: DR Reactor VSR channel damage

Abstract

On July 11, 1961 the Ball 3X System at DR Reactor was inadventently tripped. All vertical safety rods dropped and all channels were filled with balls. This report has the twofold purpose of documenting borescope observations of ten vertical rod channels at DR Reactor and recording the estimated extent of graphite damage resulting from the above incident. Channel damage data are presented on appended drawings. With suitable notations, the tracings of these drawings may be revised to reflect any future graphite damage. All vertical rod channels at DR Reactor were visually examined with a closed circuit television system during ball removal efforts. Typical photographs of trapped balls and ledges, as viewed on the television monitor, are shown. Photographs of typical graphite damage, obtained through the borescope are also included in this report. 3 refs., 8 figs., 1 tab.

Authors:
;
Publication Date:
Research Org.:
General Electric Co., Richland, WA (USA). Hanford Atomic Products Operation
Sponsoring Org.:
USDOE; USDOE, Washington, DC (USA)
OSTI Identifier:
6010086
Report Number(s):
HW-71294
ON: DE91009400
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: Declassified 23 Sep 1981
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; HANFORD PRODUCTION REACTORS; REACTOR ACCIDENTS; REACTOR CHANNELS; DAMAGE; BORESCOPES; CONTROL ELEMENTS; HAPO; REACTOR OPERATION; REMOTE VIEWING EQUIPMENT; SCRAM RODS; ACCIDENTS; EQUIPMENT; NATIONAL ORGANIZATIONS; OPERATION; PLUTONIUM PRODUCTION REACTORS; PRODUCTION REACTORS; REACTOR COMPONENTS; REACTORS; US AEC; US DOE; US ERDA; US ORGANIZATIONS; 220900* - Nuclear Reactor Technology- Reactor Safety; 220700 - Nuclear Reactor Technology- Plutonium & Isotope Production Reactors; 220400 - Nuclear Reactor Technology- Control Systems

Citation Formats

Kempf, F.J., and Rawlins, J.K. DR Reactor VSR channel damage. United States: N. p., 1961. Web.
Kempf, F.J., & Rawlins, J.K. DR Reactor VSR channel damage. United States.
Kempf, F.J., and Rawlins, J.K. Mon . "DR Reactor VSR channel damage". United States. doi:.
@article{osti_6010086,
title = {DR Reactor VSR channel damage},
author = {Kempf, F.J. and Rawlins, J.K.},
abstractNote = {On July 11, 1961 the Ball 3X System at DR Reactor was inadventently tripped. All vertical safety rods dropped and all channels were filled with balls. This report has the twofold purpose of documenting borescope observations of ten vertical rod channels at DR Reactor and recording the estimated extent of graphite damage resulting from the above incident. Channel damage data are presented on appended drawings. With suitable notations, the tracings of these drawings may be revised to reflect any future graphite damage. All vertical rod channels at DR Reactor were visually examined with a closed circuit television system during ball removal efforts. Typical photographs of trapped balls and ledges, as viewed on the television monitor, are shown. Photographs of typical graphite damage, obtained through the borescope are also included in this report. 3 refs., 8 figs., 1 tab.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 30 00:00:00 EST 1961},
month = {Mon Oct 30 00:00:00 EST 1961}
}

Technical Report:
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