Title:
REACTOR INTERNAL STRUCTURE MONITOR
Document Type and Number:
Japanese Patent JP3952242
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent defective reception of abnormality signal at generation of abnormality in reactor internal structure and record it.
SOLUTION: A detector 1 is fixed to the surrounding wall of a reactor internal structure, the detection signal of the detector 1 is A/D-converted, discriminated and evaluated, and the existence of abnormality of the reactor internal structure is judged by a reactor internal structure which is provided with an amplifying means (preamplifier) 2 for amplifying the detection signal, a signal discrimination means (signal discriminator) 3, (a signal evaluation part) 4, two A/D converters 5 and 7 A/D-converting the amplified signal, storing the data and forwarding the abnormality data based on the alarm signal, and an alarm means containing analyzer 9 and the like generating alarm by analyzing the abnormal data.
Inventors:
Ueki Demand
Masayoshi Kashikawa
Shinichi Matsumoto
Masayoshi Kashikawa
Shinichi Matsumoto
Application Number:
JP33290098A
Publication Date:
August 01, 2007
Filing Date:
November 24, 1998
Export Citation:
Assignee:
Babcock Hitachi Ltd.
International Classes:
G21C17/003; G21C17/04; G21C17/00; (IPC1-7): G21C17/003; G21C17/00
Domestic Patent References:
| JP8146014A | ||||
| JP10039728A | ||||
| JP9097285A | ||||
| JP9049896A | ||||
| JP63088410A | ||||
| JP60183528A |
Attorney, Agent or Firm:
Tatsuyuki Unuma
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