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Title: Risk assessment of K basin twelve-inch drain valve failure from a postulated seismic initiating event

Abstract

The Spent Nuclear Fuel (SNF) Project will transfer metallic SNF from the Hanford 105 K-East and 105 K-West Basins to safe interim storage in the Canister Storage Building in the 200 Area. The initial basis for design, fabrication, installation, and operation of the fuel removal systems was that the basin leak rates which could result from a postulated accident condition would not be excessive relative to reasonable recovery operations. However, an additional potential K Basin water leak path is through the K Basin drain valves. Three twelve-inch drain valves are located in the main basin bays along the north wall. The sumps containing the valves are filled with concrete which covers the drain valve body. Visual observations suggest that only the valve's bonnet and stem are exposed above the basin concrete floor. It was recognized, however, that damage of the drain valve bonnet or stem during a seismic initiating event could provide a potential K Basin water leak path. The objectives of this activity are to: (1) evaluate the risk of damaging the three twelve-inch drain valves located along the north wall of the main basin from a seismic initiating event, and (2) determine the associated potential leak rate frommore » a damaged valve.« less

Authors:
Publication Date:
Research Org.:
Hanford Site (HNF), Richland, WA (United States)
Sponsoring Org.:
US DOE Office of Environmental Management (US)
OSTI Identifier:
781684
Report Number(s):
SNF-3205-REV0; EW3135404
EW3135404; TRN: US0111233
DOE Contract Number:  
AC06-96RL13200
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 6 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; RADIATION ACCIDENTS; FUEL STORAGE POOLS; DRAINAGE; VALVES; FAILURES; SPENT FUEL STORAGE; RISK ASSESSMENT; LEAKS; SEISMIC EFFECTS

Citation Formats

MORGAN, R G. Risk assessment of K basin twelve-inch drain valve failure from a postulated seismic initiating event. United States: N. p., 1999. Web. doi:10.2172/781684.
MORGAN, R G. Risk assessment of K basin twelve-inch drain valve failure from a postulated seismic initiating event. United States. https://doi.org/10.2172/781684
MORGAN, R G. Tue . "Risk assessment of K basin twelve-inch drain valve failure from a postulated seismic initiating event". United States. https://doi.org/10.2172/781684. https://www.osti.gov/servlets/purl/781684.
@article{osti_781684,
title = {Risk assessment of K basin twelve-inch drain valve failure from a postulated seismic initiating event},
author = {MORGAN, R G},
abstractNote = {The Spent Nuclear Fuel (SNF) Project will transfer metallic SNF from the Hanford 105 K-East and 105 K-West Basins to safe interim storage in the Canister Storage Building in the 200 Area. The initial basis for design, fabrication, installation, and operation of the fuel removal systems was that the basin leak rates which could result from a postulated accident condition would not be excessive relative to reasonable recovery operations. However, an additional potential K Basin water leak path is through the K Basin drain valves. Three twelve-inch drain valves are located in the main basin bays along the north wall. The sumps containing the valves are filled with concrete which covers the drain valve body. Visual observations suggest that only the valve's bonnet and stem are exposed above the basin concrete floor. It was recognized, however, that damage of the drain valve bonnet or stem during a seismic initiating event could provide a potential K Basin water leak path. The objectives of this activity are to: (1) evaluate the risk of damaging the three twelve-inch drain valves located along the north wall of the main basin from a seismic initiating event, and (2) determine the associated potential leak rate from a damaged valve.},
doi = {10.2172/781684},
url = {https://www.osti.gov/biblio/781684}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}