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Title: Mk22 out-of-specification fractional fuel tube ratios and indeterminate fuel and target tubes

Abstract

Fractional Fuel Tube Ratio is defined as the ratio of grams {sup 235}U/ft in each outer fuel tube to the total g {sup 235}U/ft in each assembly. The ratios for the affected assemblies range from 0.518 to 0.520 with the minimum allowable specified as 0.521. Eight out-of-specification assemblies and 95 indeterminate assemblies were discovered in the P-11, K-14, and L-4 MK22 reactor charges. The eight out-of-spec assemblies in the P-11 charge did not meet the specification set forth in RTM-4432, Mark 22 Charge Specifications, Revision 6. The indeterminate assemblies either did not have a process history record to confirm the target or fuel content on the matchlist, or the process history record did not agree with the matchlist values. Twenty-five assemblies (8 out-of-spec and 17 indeterminate) in the P-11 cycle were charged to the reactor between 9/9/88 and 9/11/88. The indeterminate assemblies in the K-14 and L-4 reactor charges were discovered after shipment but before being charged to K or L Reactors. The out-of-specification assemblies will be irradiated with appropriate operating limits and the indeterminate target and fuel tubes will be replaced prior to reactor startup.

Authors:
Publication Date:
Research Org.:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5780079
Report Number(s):
RER-P-1853; RER-K-2228; RER-L-789
ON: DE92009896
DOE Contract Number:  
AC09-89SR18035
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; FUEL ASSEMBLIES; SPECIFICATIONS; COMPLIANCE; K REACTOR; L REACTOR; P REACTOR; REACTOR SAFETY; URANIUM 235; ACTINIDE ISO; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; EVEN-ODD NUCLEI; HEAVY NUCLEI; HEAVY WATER MODERATED REACTORS; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEI; PRODUCTION REACTORS; RADIOISOTOPES; REACTORS; SAFETY; SPECIAL PRODUCTION REACTORS; SPONTANEOUS FISSION RADIOISOTOPES; URANIUM ISOTOPES; 220900* - Nuclear Reactor Technology- Reactor Safety; 220600 - Nuclear Reactor Technology- Research, Test & Experimental Reactors

Citation Formats

Lambert, D P. Mk22 out-of-specification fractional fuel tube ratios and indeterminate fuel and target tubes. United States: N. p., 1988. Web.
Lambert, D P. Mk22 out-of-specification fractional fuel tube ratios and indeterminate fuel and target tubes. United States.
Lambert, D P. 1988. "Mk22 out-of-specification fractional fuel tube ratios and indeterminate fuel and target tubes". United States.
@article{osti_5780079,
title = {Mk22 out-of-specification fractional fuel tube ratios and indeterminate fuel and target tubes},
author = {Lambert, D P},
abstractNote = {Fractional Fuel Tube Ratio is defined as the ratio of grams {sup 235}U/ft in each outer fuel tube to the total g {sup 235}U/ft in each assembly. The ratios for the affected assemblies range from 0.518 to 0.520 with the minimum allowable specified as 0.521. Eight out-of-specification assemblies and 95 indeterminate assemblies were discovered in the P-11, K-14, and L-4 MK22 reactor charges. The eight out-of-spec assemblies in the P-11 charge did not meet the specification set forth in RTM-4432, Mark 22 Charge Specifications, Revision 6. The indeterminate assemblies either did not have a process history record to confirm the target or fuel content on the matchlist, or the process history record did not agree with the matchlist values. Twenty-five assemblies (8 out-of-spec and 17 indeterminate) in the P-11 cycle were charged to the reactor between 9/9/88 and 9/11/88. The indeterminate assemblies in the K-14 and L-4 reactor charges were discovered after shipment but before being charged to K or L Reactors. The out-of-specification assemblies will be irradiated with appropriate operating limits and the indeterminate target and fuel tubes will be replaced prior to reactor startup.},
doi = {},
url = {https://www.osti.gov/biblio/5780079}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 28 00:00:00 EST 1988},
month = {Wed Dec 28 00:00:00 EST 1988}
}

Technical Report:
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