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Title: Restoration of Secondary Containment in Double Shell Tank (DST) Pits

Abstract

Cracks found in many of the double-shell tank (DST) pump and valve pits bring into question the ability of the pits to provide secondary containment and remain in compliance with State and Federal regulations. This study was commissioned to identify viable options for maintain/restoring secondary containment capability in these pits. The basis for this study is the decision analysis process which identifies the requirements to be met and the desired goals (decision criteria) that each option will be weighed against. A facilitated workshop was convened with individuals knowledgeable of Tank Farms Operations, engineering practices, and safety/environmental requirements. The outcome of this workshop was the validation or identification of the critical requirements, definition of the current problem, identification and weighting of the desired goals, baselining of the current repair methods, and identification of potential alternate solutions. The workshop was followed up with further investigations into the potential solutions that were identified in the workshop and through other efforts. These solutions are identified in the body of this report. Each of the potential solutions were screened against the list of requirements and only those meeting the requirements were considered viable options. To expand the field of viable options, hybrid concepts that combinemore » the strongest features of different individual approaches were also examined. Several were identified. The decision analysis process then ranked each of the viable options against the weighted decision criteria, which resulted in a recommended solution. The recommended approach is based upon installing a sprayed on coating system.« less

Authors:
Publication Date:
Research Org.:
CHG (US)
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
805383
Report Number(s):
RPP-6855, Rev.0
EDT-630777; TRN: US0301306
DOE Contract Number:  
AC27-99RL14047
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 5 Oct 2000
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; COATINGS; CONTAINMENT SYSTEMS; REPAIR; STORAGE FACILITIES; VALVES; PUMPS; MAINTENANCE; RADIOACTIVE WASTE STORAGE

Citation Formats

SHEN, E.J. Restoration of Secondary Containment in Double Shell Tank (DST) Pits. United States: N. p., 2000. Web. doi:10.2172/805383.
SHEN, E.J. Restoration of Secondary Containment in Double Shell Tank (DST) Pits. United States. doi:10.2172/805383.
SHEN, E.J. Thu . "Restoration of Secondary Containment in Double Shell Tank (DST) Pits". United States. doi:10.2172/805383. https://www.osti.gov/servlets/purl/805383.
@article{osti_805383,
title = {Restoration of Secondary Containment in Double Shell Tank (DST) Pits},
author = {SHEN, E.J.},
abstractNote = {Cracks found in many of the double-shell tank (DST) pump and valve pits bring into question the ability of the pits to provide secondary containment and remain in compliance with State and Federal regulations. This study was commissioned to identify viable options for maintain/restoring secondary containment capability in these pits. The basis for this study is the decision analysis process which identifies the requirements to be met and the desired goals (decision criteria) that each option will be weighed against. A facilitated workshop was convened with individuals knowledgeable of Tank Farms Operations, engineering practices, and safety/environmental requirements. The outcome of this workshop was the validation or identification of the critical requirements, definition of the current problem, identification and weighting of the desired goals, baselining of the current repair methods, and identification of potential alternate solutions. The workshop was followed up with further investigations into the potential solutions that were identified in the workshop and through other efforts. These solutions are identified in the body of this report. Each of the potential solutions were screened against the list of requirements and only those meeting the requirements were considered viable options. To expand the field of viable options, hybrid concepts that combine the strongest features of different individual approaches were also examined. Several were identified. The decision analysis process then ranked each of the viable options against the weighted decision criteria, which resulted in a recommended solution. The recommended approach is based upon installing a sprayed on coating system.},
doi = {10.2172/805383},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {10}
}