# US 5,346,096 A · Radiation-shielding transport and storage container

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- Number: US 5,346,096 A
- Document ID: US5346096A
- Status: Granted
- Kind: A
- Application number: 07/948,719
- Filed: 1992-09-22
- Granted: 1994-09-13
- Earliest claimed: 1991-10-24
- Assignees: GNS Gesellschaft fur Nuklear-Service mbH
- Inventors: Rudolf Diersch; Klaus Janberg; Dieter Methling; Karl Schroder
- Web page: https://patentgrep.com/patent/US5346096A

## CPC

- B23K 23/00: Alumino-thermic welding
- G21F 5/12: Closures for containers; Sealing arrangements
- Y10S 220/29: Welded seam
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- G21F: PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR (radiation protection by pharmaceutical means A61K8/00, A61Q17/04; in cosmonautic vehicles B64G1/54; combined with a reactor G21C11/00; combined with X-ray tubes H01J35/16; combined with X-ray apparatus H05G1/02)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A radiation-shielding storage/transport container has a cast-iron vessel having an open end defining an end face, a steel ring engaging the end face and forming at least one annular seat, a weld unitarily bonding the ring to the end face, and a cover secured to the steel ring in the seat thereof. The cast-iron vessel is formed at its open end with an annular seat having a shoulder surface forming the end face. The weld is an aluminothermic weld that extends over the entire surface of the interface between the ring and the vessel. The ring is formed with two such seats and the cover includes an inner plug cover and an outer cover each in a respective one of the seats. The outer cover is of steel and a second peripheral weld connects the outer cover to the respective seat.

## Claims

### Claim 1

A radiation-shielding storage/transport container comprising:
a cast-iron vessel having an open end defining an end face;
a steel ring engaging the end face and forming at least one annular seat;
an aluminothermic weld unitarily bonding the ring to the end face; and
a cover secured to the steel ring in the seat thereof.

### Claim 2 (depends on 1)

The radiation-shielding storage/transport container defined in claim 1 wherein the cast-iron vessel is formed at its open end with an annular seat having a shoulder surface forming the end face, the steel ring being set into the open end.

### Claim 3 (depends on 1)

The radiation-shielding storage/transport container defined in claim 1 wherein the ring sits on the end face of the vessel.

### Claim 4 (depends on 1)

The radiation-shielding storage/transport container defined in claim 1 wherein the ring and vessel have substantially identical inside and outside diameters and the end face is substantially planar.

### Claim 5 (depends on 1)

The radiation-shielding storage/transport container defined in claim 1 wherein the ring is formed with two such seats and the cover includes an inner plug cover and an outer cover each in a respective one of the seats.

### Claim 6 (depends on 5)

The radiation-shielding storage/transport container defined in claim 5 wherein the outer cover is of steel, the container further comprising
a second peripheral weld connecting the outer cover to the respective seat.