Patent US3883441A successfully refreshed from Google Patents.
US3883441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fixing radioactive waste
Assignee: DURATEK Corp
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Filing: 1970-07-20
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Granted: 1975-05-13
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Expires: 1990-07-20
Abstract
Abstract Fixing radioactive waste is disclosed in which the waste is collected as a slurry in aqueous media in a metering tank located within the nuclear facilities. Collection of waste is continued from time to time until a sufficient quantity of material to make up a full shipment to a burial ground has been collected. The slurry is then cast in shipping containers for shipment to a burial ground or the like by metering through a mixer into which fixing materials are simultaneously metered at a rate to yield the desired proportions of materials.
Inventors
- 👤 John D Murphy
- 👤 Jr John Pirro
- 👤 Monsey Lawrence
- 👤 Stanley F Wisla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:50
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/16; G21F9/162; G21F9/165; G21F9/008; Y; Y10; Y10S; Y10S422/00; Y10S422/903
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A WASTE PROCESSING FACILITY FOR PREPARING RADIOACTIVE WASTES FOR DISPOSAL WHICH INCLUDES MEANS DEFINING A SHIELDED ENCLOSURE, A METERING TANK POSITIONED IN SAID ENCLOSURE, SAID METERING TANK INCLUDING METERING MEANS FOR REMOVING LIQUID CONTENTS THEREFROM AT A METERED RATE AND MEASURING MEANS FOR MEASURING THE RADIOACTIVITY OF LIQUID CONTENTS THEREOF, MIXING MEANS FOR CONTINUOUSLY RECEIVING, MIXING AND DISCHARGING FIXING MATERIALS AND LIQUIDS SAID MIXING MEANS BEING CONNECTED TO SAID METERING MEANS TO RECEIVE THE CONTENTS OF SAID TANK THROUGH SAID METERING MEANS, FIXING MATERIALS FEED MEANS CONNECTED TO SAID MIXING MEANS TO DELIVER FIXING MATERIALS THERETO AT A REGULATED RATE, MEANS DEFINING A SPACE IN WHICH TO POSITION A CONTAINER RELATIVE TO SAID MIXING MEANS TO RECEIVE THE DISCHARGED CONTENTS THEREFROM.
Claim 2
Dependent Claim
121 words
A WASTE PROCESSING FACILITY FOR PREPARING RADIOACTIVE WASTES FOR DISPOSAL WHICH INCLUDES MEANS DEFINING A SHIELDED ENCLOSURE, A METERING TANK POSITIONED IN SAID ENCLOSURE, SAID METERING TANK INCLUDING METERING MEANS FOR REMOVING LIQUID CONTENTS THEREFROM AT A METERED RATE AND MEASURING MEANS FOR MEASURING THE RADIOACTIVITY OF LIQUID CONTENTS THEREOF, MIXING MEANS FOR CONTINUOUSLY RECEIVING, MIXING AND DISCHARGING FIXING MATERIALS AND LIQUIDS SAID MIXING MEANS BEING CONNECTED TO SAID METERING MEANS TO RECEIVE THE CONTENTS OF SAID TANK THROUGH SAID METERING MEANS, FIXING MATERIALS FEED MEANS CONNECTED TO SAID MIXING MEANS TO DELIVER FIXING MATERIALS THERETO AT A REGULATED RATE, MEANS DEFINING A SPACE IN WHICH TO POSITION A CONTAINER RELATIVE TO SAID MIXING MEANS TO RECEIVE THE DISCHARGED CONTENTS THEREFROM.
Claim 3
Dependent Claim
21 words
A waste processing facility according to claim 1 which further includes means for storing fixing materials adjacent said enclosure defining means.
Claim 4
Dependent Claim
48 words
A waste processing facility according to claim 1 in which said means defining an enclosure is located on a platform in which said mixing means is positioned on the underside of said platform, the space beneath said platform thereby constituting said space in which to position a container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |