Title: CONTENTS OF LONG TERM PERFORMANCE ANALYSES TO SUPPORT THE RETRIEVAL & CLOSURE OF TANKS FOR THE WASHINGTON STATE DEPARTMENT OF ECOLOGY

Abstract

At the Department of Energy's (DOE) Hanford Site in south central Washington State, there are 177 large underground tanks with associated facilities that are used to store radioactive hazardous waste. Some of these tanks have leaked, with the result that there is tank waste in the Site's groundwater. DOE's Office of River Protection (ORP) plans to remediate these storage facilities (WP-13678, ''Integrated Mission Acceleration Plan'') by retrieving waste from the tanks, performing facility stabilization, and implementing soil cleanup. Before such work can be performed, performance analyses of various options must be performed for OW, DOE Headquarters, and the Washington State Department of Ecology (Ecology). Because of the large number of performance analyses for each tank and the large number of tanks, performance analyses for the different agencies will be integrated to the maximum extent possible. This document focuses on the requirements for performance analyses used to satisfy Ecology requirements. There are three types of large underground tanks at Hanford: single-shell tanks (SST), double-shell tanks (DST), and miscellaneous underground storage tanks (MUST). The SSTs have a storage capacity ranging from 50,000 to 1,000,000 gallons. Although waste is still present, they do not meet current regulatory requirements for the addition of waste.more » The DSTs have a storage capacity ranging from 500,000 to 1,160,000 gallons and are expected to meet current regulatory requirements. The SSTs are grouped into twelve tank farms (A, AX, B, BX, BY, C, S, SX, T, TX, TY, and U). For regulatory purposes, the twelve tank farms are grouped into seven waste management areas (WMA) (MAX, BBXIBY, C, S/SX, T, TWTY, and U), although the T and TWTY WMAs are often treated as a unit. The DSTs are grouped only into tank farms (AN, AP, AW, AX, AY, AZ, and SY). MUSTS are smaller tanks (maximum size of 50,000 gallons) that are scattered in various farms. Section 2.0 provides an overview and summary of this document. Section 3.0 describes the requirements of performance analyses. Section 4 provides the contents of the master performance assessment.« less

Authors:

MANN, F M

Publication Date:

Tue Jan 13 00:00:00 EST 2004

Research Org.:

CH2M Hill Hanford Group, Inc., Richland, WA (United States)

Sponsoring Org.:

ENVIRONMENTAL MANAGEMENT (US)

OSTI Identifier:

820865

Report Number(s):

RPP-14284, Rev.1
DE-AC27-99RL14047; TRN: US200407%%270

DOE Contract Number:  

AC27-99RL14047

Resource Type:

Technical Report

Resource Relation:

Other Information: PBD: 13 Jan 2004

Country of Publication:

United States

Language:

English

Subject:

54 ENVIRONMENTAL SCIENCES; ACCELERATION; CAPACITY; CLOSURES; ECOLOGY; PERFORMANCE; SOILS; STABILIZATION; STORAGE; STORAGE FACILITIES; TANKS; UNDERGROUND STORAGE; WASTE MANAGEMENT; WASTES