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JPS5583832A - Differential pressure type sodium leak detection method - Google Patents

Differential pressure type sodium leak detection method

Info

Publication number
JPS5583832A
JPS5583832A JP15646278A JP15646278A JPS5583832A JP S5583832 A JPS5583832 A JP S5583832A JP 15646278 A JP15646278 A JP 15646278A JP 15646278 A JP15646278 A JP 15646278A JP S5583832 A JPS5583832 A JP S5583832A
Authority
JP
Japan
Prior art keywords
differential pressure
output
difference
register
leak
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15646278A
Other languages
Japanese (ja)
Inventor
Hidefumi Ibe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15646278A priority Critical patent/JPS5583832A/en
Publication of JPS5583832A publication Critical patent/JPS5583832A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Examining Or Testing Airtightness (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

PURPOSE: To obtain a rapid-response and sure-decision differential pressure detection method of sodium leak by performing differential pressure type sodium leak decision on a basis of difference between the differential pressure preceding over a fixed time and the current differential pressure in stead of the absolute value of the differential pressure.
CONSTITUTION: The output of a differential pressure detector is sampled at every one minute, and difference between this sampled output and the output preceding by 10 minutes is taken and is compared with a set value to decide whether leak is present or not. The input from the differential pressure detector is converted to a digital value by A/D converter 4 and is inputted to left-end shift register 5 synchronously with shift pulses. By setting the period of the shift pulse to one minute, contents of register 5 are shifted to the right direction successively. Consequently, contents of right-end register 5 become the output of the differential pressure detector preceding by 10 minutes, and difference between this output and the output of A/D converter 4 becomes the output of subtractor 6, and it is decided whether leak is present or not rapidly and accurately without influence of individual difference, etc., of a filter by comparing the output above of subtractor 6 with the set level.
COPYRIGHT: (C)1980,JPO&Japio
JP15646278A 1978-12-20 1978-12-20 Differential pressure type sodium leak detection method Pending JPS5583832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15646278A JPS5583832A (en) 1978-12-20 1978-12-20 Differential pressure type sodium leak detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15646278A JPS5583832A (en) 1978-12-20 1978-12-20 Differential pressure type sodium leak detection method

Publications (1)

Publication Number Publication Date
JPS5583832A true JPS5583832A (en) 1980-06-24

Family

ID=15628270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15646278A Pending JPS5583832A (en) 1978-12-20 1978-12-20 Differential pressure type sodium leak detection method

Country Status (1)

Country Link
JP (1) JPS5583832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293771A (en) * 1992-09-01 1994-03-15 Ridenour Ralph Gaylord Gas leak sensor system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293771A (en) * 1992-09-01 1994-03-15 Ridenour Ralph Gaylord Gas leak sensor system
WO1994005992A1 (en) * 1992-09-01 1994-03-17 Ridenour Ralph Gaylord Gas leak sensor system

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