Defense Waste Processing Facility (DWPF) Startup Test Program
Defense Waste Processing Facility (DWPF) Startup Test Program

Author:

Publisher:

Published: 1992

Total Pages: 39

ISBN-13:

DOWNLOAD EBOOK

Liquid high-level nuclear waste will be immobilized at the Savannah River Site (SRS) by vitrification in borosilicate glass. The glass will be processed in the Defense Waste Processing Facility (DWPF) and poured into stainless steel canisters for eventual geologic disposal. Six simulated glass compositions will be processed in the DWPF during initial startup. The glass in 86 of the first 106 full sized canisters will be sampled and characterized. Extensive glass characterization will determine the following: (1) sampling frequency for radioactive operation, (2) verification of the compositionally dependent process-product models, (3) verification of melter mixing, (4) representativeness of the glass from the canister throat sampler, and (5) homogeneity of the canister glass.

Startup Test Strategy for Demonstrating the Ability of DWPF to Comply with the WAPS.
Startup Test Strategy for Demonstrating the Ability of DWPF to Comply with the WAPS.

Author:

Publisher:

Published: 1992

Total Pages: 7

ISBN-13:

DOWNLOAD EBOOK

This document discusses Startup Test Program for the Defense Waste Processing Facility (DWPF) which has been formulated to demonstrate that the DWPF can be operated in a safe, environmentally responsible manner to produce a product that will meet the requirements of the Waste Acceptance Preliminary Specifications. Startup will be managed in four distinct phases: Integrated Water Runs, Cold Chemical Runs, Waste Qualification Runs, and Radioactive Operation. A variety of feeds will be used for Waste Qualification Runs. Initial operation will commence with a composite feed with characteristics designed to approximate those of the initial waste glass. All equipment critical to radioactive operation of the DWPF will be tested to demonstrate the ability of DWPF to produce a product suitable for eventual geological disposal.

Technical Bases for the DWPF Testing Program
Technical Bases for the DWPF Testing Program

Author:

Publisher:

Published: 1990

Total Pages: 10

ISBN-13:

DOWNLOAD EBOOK

The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) will be the first production facility in the United States for the immobilization of high-level nuclear waste. Production of DWPF canistered wasteforms will begin prior to repository licensing, so decisions on facility startup will have to be made before the final decisions on repository design are made. The Department of Energy's Office of Civilian Radioactive Waste Management (RW) has addressed this discrepancy by defining a Waste Acceptance Process. This process provides assurance that the borosilicate-glass wasteform, in a stainless-steel canister, produced by the DWPF will be acceptable for permanent storage in a federal repository. As part of this process, detailed technical specifications have been developed for the DWPF product. SRS has developed detailed strategies for demonstrating compliance with each of the Waste Acceptance Process specifications. An important part of the compliance is the testing which will be carried out in the DWPF. In this paper, the bases for each of the tests to be performed in the DWPF to establish compliance with the specifications are described, and the tests are detailed. The results of initial tests relating to characterization of sealed canisters are reported.

Initial Results from the Canistered Waste Forms Produced During the First Campaign of the DWPF Startup Test Program
Initial Results from the Canistered Waste Forms Produced During the First Campaign of the DWPF Startup Test Program

Author:

Publisher:

Published: 1995

Total Pages: 11

ISBN-13:

DOWNLOAD EBOOK

As part of the Defense Waste Processing Facility (DWPF) Startup Test Program, approximately 90 canisters will be filled with glass containing simulated radioactive waste during five separate campaigns. The first campaign is a facility acceptance test to demonstrate the operability of the facility and to collect initial data on the glass and the canistered waste forms. During the next four campaigns (the waste qualification campaigns) data will be obtained which will be used to demonstrate that the DWPF product meets DOE's Waste Acceptance Product Specifications (WAPS). Currently 12 of the 16 canisters have been filled with glass during the first campaign (FA-13). This paper describes the tests that have been carried out on these 12 glass-filled canisters and presents the data with reference to the acceptance criteria of the WAPS. These tests include measurement of canister dimensions prior to and after glass filling. dew point, composition, and pressure of the gas within the free volume of the canister, fill height, free volume, weight, leak rates of welds and temporary seals, and weld parameters.

The DWPF Strategy for Producing an Acceptable Product
The DWPF Strategy for Producing an Acceptable Product

Author:

Publisher:

Published: 1991

Total Pages: 10

ISBN-13:

DOWNLOAD EBOOK

The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) will convert the 130 million liters of high-level nuclear waste at SRS into stable borosilicate glass. Production of canistered waste forms by the DWPF is scheduled to begin well before submission of the license application for the first repository. The Department of Energy has defined waste acceptance specifications to ensure that DWPF canistered waste forms will be acceptable for eventual disposal. To ensure that canistered waste forms meet those specifications, a program is being carried out to qualify the waste form and those aspects of the production process which affect product quality. This program includes: Pre-production qualification testing of simulated and actual waste forms; Disciplined demonstrations of the ability to produce an acceptable product during startup testing; and Application of a rigorous product control program during production.

The Defense Waste Processing Facility
The Defense Waste Processing Facility

Author:

Publisher:

Published: 1998

Total Pages: 10

ISBN-13:

DOWNLOAD EBOOK

The Defense Waste Processing Facility (DWPF) at the Savannah River Site in Aiken, SC is currently immobilizing high level radioactive sludge waste in borosilicate glass. The DWPF began vitrification of radioactive waste in May, 1996. Prior to that time, an extensive startup test program was completed with simulated waste. The DWPF is a first of its kind facility. The experience gained and data collected during the startup program and early years of operation can provide valuable information to other similar facilities. This experience involves many areas such as process enhancements, analytical improvements, glass pouring issues, and documentation/data collection and tracking. A summary of this experience and the results of the first two years of operation will be presented.

Startup of Savannah River's Defense Waste Processing Facility to Produce Radioactive Glass
Startup of Savannah River's Defense Waste Processing Facility to Produce Radioactive Glass

Author:

Publisher:

Published:

Total Pages: 12

ISBN-13:

DOWNLOAD EBOOK

The Savannah River Site (SRS) began production of radioactive glass in the Defense Waste Process Facility (DWPF) in 1996 following an extensive test program discussed earlier. Currently DWPF is operating in a 'sludge only' mode to produce radioactive glass consisting of washed high-level waste sludge and glass frit. Future operations will produce radioactive glass consisting of washed high-level waste sludge, precipitated cesium, and glass frit. This paper provides an update of processing activities to date, operational problems encountered since entering radioactive operations, and the programs underway to solve them.

Waste Acceptance and the DWPF Startup Test Program
Waste Acceptance and the DWPF Startup Test Program

Author:

Publisher:

Published: 1992

Total Pages: 8

ISBN-13:

DOWNLOAD EBOOK

The DWPF is currently carrying out a Startup Test Program which will lead to radioactive operations in the facility. The objective of a significant portion of this program is to demonstrate that the DWPF can reliably make glass which satisfies DOE's product specifications. This objective will be achieved through a series of integrated process campaigns using feeds of various compositions (the Qualification Runs).2 During these campaigns, the DWPF Glass Product Control Programs (GPCP) will be used to ensure that glass is made which meets specifications. The GPCP uses a correlation between glass composition and leach test results to determine whether a particular batch of feed will make acceptable glass (i.e., glass which will meet the specifications).