Title:
【発明の名称】キャスク内のガス圧力の監視装置及びその使用方法
Document Type and Number:
Japanese Patent JPH0795114
Kind Code:
B2
Abstract:
Both an apparatus (1) and a method for monitoring the pressure within a cask (5) containing radioactive materials. The apparatus (1) comprises a differential pressure sensor (55) sealingly connected to a bore (41) that penetrates through the wall (7) of the cask (5) for directly monitoring the pressure of the helium gas contained within the cask (5) and for providing a first barrier between the helium gas and the ambient atmosphere. An evacuated sensor chamber (35) surrounds both the outlet end (40) of the through-wall bore (41), and the differential pressure sensor (55) for providing a second barrier between the helium and the ambient atmosphere as well as a vacuum reference point for the differential pressure sensor (55). An absolute pressure sensor (56) is connected in parallel to the through-wall bore (41) to allow the system operator to determine whether or not a reduction in the pressure sensed by the differential pressure sensor (55) is the result of a leakage condition in the cask (5), or in the evacuated sensor chamber (35).
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Inventors:
Kingsley F Graham
John Basil Lipchuck
John Basil Lipchuck
Application Number:
JP20983391A
Publication Date:
October 11, 1995
Filing Date:
July 26, 1991
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORPORATION
International Classes:
G01L13/00; G01M3/32; G21F5/12; (IPC1-7): G21F5/12
Domestic Patent References:
| JP1131200U |
Attorney, Agent or Firm:
Koichiro Kato (2 outside)
Next Patent: グローブボックス相互接続用ガスケット