JPS54123727A - Method of preventing piping from corrosion cracking due to stress - Google Patents

Method of preventing piping from corrosion cracking due to stress

Info

Publication number
JPS54123727A
JPS54123727A JP2991978A JP2991978A JPS54123727A JP S54123727 A JPS54123727 A JP S54123727A JP 2991978 A JP2991978 A JP 2991978A JP 2991978 A JP2991978 A JP 2991978A JP S54123727 A JPS54123727 A JP S54123727A
Authority
JP
Japan
Prior art keywords
stress
frozen
corrosion cracking
cracking due
steel pipe
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
JP2991978A
Other languages
Japanese (ja)
Inventor
Eisaku Hayashi
Koji Fujimoto
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 JP2991978A priority Critical patent/JPS54123727A/en
Publication of JPS54123727A publication Critical patent/JPS54123727A/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

Landscapes

  • Pipeline Systems (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PURPOSE: To prevent piping from corrosion cracking due to stress by simple operation in which both ends of pipe are closed only to cool and freeze liquid within the pipe.
CONSTITUTION: On the periphery of austenitic steel pipe 3 put between a coolers 5, 51 is mounted similarly a cooling container 13 provided with a liquid nitrogen inlet 7 and a heat insulator 6. Unfrozen water sandwiched between cut-off frozen portions 10, 11 is cooled and frozen to form frozen portion 12 while bringing about approximately 4% expansion of volume. Since it is constrained in the longitudinal direction by the frozen portions 10, 11, said expansion of volume is directed radially to give the steel pipe 3 about 2% strain. Next, frozen portions 10 to 12 are heated to be returned to water while the inner surface of the steel pipe 3 is subject to residual compressive stress rather than residual tensile stress, one of causes of corrosion cracking due to stress, to prevent satisfactorily same.
COPYRIGHT: (C)1979,JPO&Japio
JP2991978A 1978-03-17 1978-03-17 Method of preventing piping from corrosion cracking due to stress Pending JPS54123727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2991978A JPS54123727A (en) 1978-03-17 1978-03-17 Method of preventing piping from corrosion cracking due to stress

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2991978A JPS54123727A (en) 1978-03-17 1978-03-17 Method of preventing piping from corrosion cracking due to stress

Publications (1)

Publication Number Publication Date
JPS54123727A true JPS54123727A (en) 1979-09-26

Family

ID=12289397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2991978A Pending JPS54123727A (en) 1978-03-17 1978-03-17 Method of preventing piping from corrosion cracking due to stress

Country Status (1)

Country Link
JP (1) JPS54123727A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012154768A3 (en) * 2011-05-09 2013-04-04 Lubrizol Advanced Materials, Inc. Fire suppression fluid containing a carboxylate salt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012154768A3 (en) * 2011-05-09 2013-04-04 Lubrizol Advanced Materials, Inc. Fire suppression fluid containing a carboxylate salt

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