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Title: A Case Study on Severe Accident Water Addition and Water Management for a MARK I Containment

Abstract

For BWR plants, accident management guidance prior to the reactor accidents at Fukushima Daiichi called for flooding the drywell to a level of approximately1.2 m(4 feet) above the drywell floor once vessel breach has been determined. While this action can help to submerge ex-vessel core debris, it can also result in flooding the wetwell and thereby rendering equipment in the drywell unusable for recovery and the wetwell vent path unavailable. An alternate strategy has been developed in the industry guidance [1] for responding to the severe accident capable vent Order, EA-13-109 [2]. The alternate strategy consists of throttling the flooding rate to achieve a stable wetwell water level that preserves the wetwell vent path.

Authors:
 [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1471700
Report Number(s):
ANL-18/21
145503; TRN: US1902600
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS

Citation Formats

Farmer, M. T. A Case Study on Severe Accident Water Addition and Water Management for a MARK I Containment. United States: N. p., 2018. Web. doi:10.2172/1471700.
Farmer, M. T. A Case Study on Severe Accident Water Addition and Water Management for a MARK I Containment. United States. doi:10.2172/1471700.
Farmer, M. T. Sat . "A Case Study on Severe Accident Water Addition and Water Management for a MARK I Containment". United States. doi:10.2172/1471700. https://www.osti.gov/servlets/purl/1471700.
@article{osti_1471700,
title = {A Case Study on Severe Accident Water Addition and Water Management for a MARK I Containment},
author = {Farmer, M. T.},
abstractNote = {For BWR plants, accident management guidance prior to the reactor accidents at Fukushima Daiichi called for flooding the drywell to a level of approximately1.2 m(4 feet) above the drywell floor once vessel breach has been determined. While this action can help to submerge ex-vessel core debris, it can also result in flooding the wetwell and thereby rendering equipment in the drywell unusable for recovery and the wetwell vent path unavailable. An alternate strategy has been developed in the industry guidance [1] for responding to the severe accident capable vent Order, EA-13-109 [2]. The alternate strategy consists of throttling the flooding rate to achieve a stable wetwell water level that preserves the wetwell vent path.},
doi = {10.2172/1471700},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {9}
}

Technical Report:

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