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FTA of loss of cooling to a HALW storage tank

Technical Report:

Abstract

A fault tree analysis consisting of assumption of accident scenarios, construction of fault trees, and performing of analyses is given for a loss of cooling accident in a HALW (High Activity Liquid Waste) tank of a typical reprocessing facility. A systematic method is developed to avoid `missing scenarios`, and `confused scenarios` which are major problems in these analyses. Model plant data, basic failure frequency data and a fault tree analysis code named FTL have been introduced from NUKEM GmbH, Germany. The analyzed occurrence frequencies for the assumed scenarios of the loss of cooling accident are discussed to show a design improvement measure to attain a more reliable system. These results are compared with general requirements to be selected as DBE (design basis event) used in the safety assessment of the facility design. DBE is an event which is considered to have relatively high occurrence probabilities and considerable effects on environment. (author).
Authors:
Nomura, Yasushi [1] 
  1. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Publication Date:
Oct 01, 1991
Product Type:
Technical Report
Report Number:
JAERI-M-91-160
Reference Number:
SCA: 050800; PA: JPN-91:012177; SN: 92000659211
Resource Relation:
Other Information: PBD: Oct 1991
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; LOSS OF COOLANT; FAULT TREE ANALYSIS; TANKS; LIQUID WASTES; HIGH-LEVEL RADIOACTIVE WASTES; REPROCESSING; F CODES; DESIGN BASIS ACCIDENTS; OFF-GAS SYSTEMS; COOLING SYSTEMS; PROBABILISTIC ESTIMATION; 050800; SPENT FUELS REPROCESSING
OSTI ID:
10117061
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE92768099; TRN: JP9112177
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
JPN
Size:
184 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Nomura, Yasushi. FTA of loss of cooling to a HALW storage tank. Japan: N. p., 1991. Web.
Nomura, Yasushi. FTA of loss of cooling to a HALW storage tank. Japan.
Nomura, Yasushi. 1991. "FTA of loss of cooling to a HALW storage tank." Japan.
@misc{etde_10117061,
title = {FTA of loss of cooling to a HALW storage tank}
author = {Nomura, Yasushi}
abstractNote = {A fault tree analysis consisting of assumption of accident scenarios, construction of fault trees, and performing of analyses is given for a loss of cooling accident in a HALW (High Activity Liquid Waste) tank of a typical reprocessing facility. A systematic method is developed to avoid `missing scenarios`, and `confused scenarios` which are major problems in these analyses. Model plant data, basic failure frequency data and a fault tree analysis code named FTL have been introduced from NUKEM GmbH, Germany. The analyzed occurrence frequencies for the assumed scenarios of the loss of cooling accident are discussed to show a design improvement measure to attain a more reliable system. These results are compared with general requirements to be selected as DBE (design basis event) used in the safety assessment of the facility design. DBE is an event which is considered to have relatively high occurrence probabilities and considerable effects on environment. (author).}
place = {Japan}
year = {1991}
month = {Oct}
}