Method and apparatus for minimizing diversion of radioactive samples from a nuclear fuel sampling system

Patent · Tue Jan 15 00:00:00 EST 1985

OSTI ID:5659893

Graf, Jr, W A

Method and apparatus for minimizing diversion of radioactive samples from a nuclear fuel sampling system. The apparatus includes a sampler for drawing a radioactive sample from a remote vessel containing nuclear fuel. The sampler is located within a shielding enclosure that has solid walls for preventing direct physical access to the sampler. A tray is located in the wall of the enclosure and is used for translating a sample vessel in and out of the enclosure. The apparatus further includes a time lock escapement that periodically immobilizes the tray for a period of time sufficient to minimize diversion of the radioactive samples.

• Assignee: Electric Power Research Institute Inc.
• Patent Number(s): US 4493792
• Application Number: TRN: 85-017693
• OSTI ID: 5659893
• Resource Relation: Patent File Date: Filed date 11 Jul 1980; Other Information: PAT-APPL-168792
• Country of Publication: United States
• Language: English

Related Subjects

98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
NUCLEAR FUELS
SAMPLING
NUCLEAR MATERIALS DIVERSION
SAMPLERS
AIR FLOW
CONTAINERS
RADIOACTIVE MATERIALS
SAFEGUARDS
SHIELDS
VALVES
CONTROL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUELS
GAS FLOW
MATERIALS
REACTOR MATERIALS
055001* - Nuclear Fuels- Safeguards
Inspection
& Accountability- Technical Aspects