Published August 20, 1996 | Version v1
Patent Metadata-only

Eddy current sensor probe

Creators

Description

The probe of the present invention inspects fine tubes in a steam generator of a PWR-type power plant facility nondestructively. Namely, an amplifier is disposed to a stage subsequent to each of coils of a plurality of sensors respectively. In addition, a switch is disposed to the further subsequent stage for serially processing information obtained from each of the coils. Signals from the switch are sent through one cable to an analyzing/displaying section. With such a constitution, the inspected information obtained through the coils is amplified by the amplifier to a level endurable to noises. Information from the plurality of coils is sent to the analyzing/display section through one cable by sending information while changing the switch successively. As a result, the detection signals cause no lowering of an S/N ratio in the midway of the transmission through the cable. In addition, troubles such as disconnection of the cable and cost for the cable can be reduced. (I.S.)

Availability note (English)

Available from JAPIO. Also available from EPO.

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G01N27/90; G21C17/003.
IPC
Int. Cl. G01N27/90; G21C17/003.
Patent number
JP patent document 8-211026/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
28021821
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
AMPLIFIERS; EDDY CURRENT TESTING; EDDY CURRENTS; ELECTRIC COILS; NONDESTRUCTIVE TESTING; PWR TYPE REACTORS; STEAM GENERATORS; STEAM LINES; SWITCHING CIRCUITS
Descriptors DEC
BOILERS; CURRENTS; ELECTRIC CURRENTS; ELECTRICAL EQUIPMENT; ELECTROMAGNETIC TESTING; ELECTRONIC CIRCUITS; ENRICHED URANIUM REACTORS; EQUIPMENT; MATERIALS TESTING; PIPELINES; POWER REACTORS; REACTORS; TESTING; THERMAL REACTORS; VAPOR GENERATORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Secondary number(s)
JP patent application 7-18988.