JPS5485416A - Stress corrosion breakage preventing method for piping - Google Patents
Stress corrosion breakage preventing method for pipingInfo
- Publication number
- JPS5485416A JPS5485416A JP15288877A JP15288877A JPS5485416A JP S5485416 A JPS5485416 A JP S5485416A JP 15288877 A JP15288877 A JP 15288877A JP 15288877 A JP15288877 A JP 15288877A JP S5485416 A JPS5485416 A JP S5485416A
- Authority
- JP
- Japan
- Prior art keywords
- piping
- temperature difference
- stress corrosion
- corrosion breakage
- preventing method
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To prevent stress corrosion breakage of stainless steel piping of the primary system of a nuclear reactor connected to a pressure vessel by removing the temperature difference between the upper and lower part of the piping near the joining part.
CONSTITUTION: With a shutter valve 6 closed, the high temperature water in the pressure vessel 4 and the low temperature water in the piping 5 cause temperature difference between the upper and lower part of the piping 5 near the joining part. This temperature difference is detected by temperature sensors 7, 8 and 9 provided on the upper and lower part of the piping 5 and measured by temperature difference detector 10 and 11. The measured results are applied to a controller 12. The controller 12 closes the power source switch 13 to heat the piping 5 with a heater 14 provided externally on the piping 5, thus reducing the temperature difference between the upper and lower part of the piping 5 and preventing excessive temperature difference and stress corrosion breakage of the piping 5.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15288877A JPS5485416A (en) | 1977-12-21 | 1977-12-21 | Stress corrosion breakage preventing method for piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15288877A JPS5485416A (en) | 1977-12-21 | 1977-12-21 | Stress corrosion breakage preventing method for piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5485416A true JPS5485416A (en) | 1979-07-07 |
Family
ID=15550308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15288877A Pending JPS5485416A (en) | 1977-12-21 | 1977-12-21 | Stress corrosion breakage preventing method for piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5485416A (en) |
-
1977
- 1977-12-21 JP JP15288877A patent/JPS5485416A/en active Pending
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