JPS5583832A - Differential pressure type sodium leak detection method - Google Patents
Differential pressure type sodium leak detection methodInfo
- 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
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
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293771A (en) * | 1992-09-01 | 1994-03-15 | Ridenour Ralph Gaylord | Gas leak sensor system |
-
1978
- 1978-12-20 JP JP15646278A patent/JPS5583832A/en active Pending
Cited By (2)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE85872T1 (en) | CIRCUIT ARRANGEMENT FOR CONVERTING A MEASURING SIGNAL DISTURBED BY AN INTERFERENCE FUNCTION INTO AN UNDISTURBED SIGNAL. | |
| JPS5583832A (en) | Differential pressure type sodium leak detection method | |
| JPS54134481A (en) | Automatic rate analysis | |
| JPS57192876A (en) | Measuring device for average frequency | |
| FR2178410A5 (en) | ||
| JPS561022A (en) | Focus detector of camera | |
| US3911329A (en) | Device for cumulating the useful sections of a signal appearing in the form of a series of pulses each having a useful section | |
| JPS56119526A (en) | Signal binary coding device | |
| JPS5742282A (en) | A/d converter for output video signal of vtr | |
| SU922658A1 (en) | Method of harmonic signal phase shift measurement | |
| JPS5493951A (en) | Frequency digital variable pulse generator | |
| JPS5554478A (en) | Comparing test method | |
| JPS54101143A (en) | Protective relay | |
| JPS54150176A (en) | Signal extracting and operating apparatus | |
| JPS56138372A (en) | Automatic ghost rejection circuit | |
| JPS5718123A (en) | Analog-to-digital converter | |
| JPS5591079A (en) | A/d converter | |
| JPS5635222A (en) | Position control device | |
| JPS5533204A (en) | Digital control system | |
| JPS5552633A (en) | Pulse multiplication unit | |
| JPS5422752A (en) | Analog-digital converting device | |
| JPS54130861A (en) | Pll anomaly detection method | |
| JPS5437624A (en) | Phase calibration system of facsimile equipment | |
| JPS5588462A (en) | Scanning timing detector | |
| JPS5448287A (en) | Digital logic circuit |