Piping Cracks in JPDR, (II)

Ultrasonic and radiographic examinations of weldments in the primary piping of the Japan Power Demonstration Reactor (JPDR) revealed crack indications in two reactor vessel nozzle safe-end to pipe joints CS-1 and UL-1, while on the joint FW-132 a crack-like indication was given only on the ultrasoni...

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Bibliographic Details
Published inJournal of nuclear science and technology Vol. 15; no. 11; p. 856
Main Authors FUTAMURA, Yoshiaki, KINOSHITA, Takehiko, TORIKAI, Kinichi
Format Journal Article
LanguageEnglish
Published Tokyo Taylor & Francis Ltd 01.11.1978
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Summary:Ultrasonic and radiographic examinations of weldments in the primary piping of the Japan Power Demonstration Reactor (JPDR) revealed crack indications in two reactor vessel nozzle safe-end to pipe joints CS-1 and UL-1, while on the joint FW-132 a crack-like indication was given only on the ultrasonic record. These three parts of the reactor piping were removed from the reactor, and subjected to thorough nondestructive and destructive examination in laboratory. The indications obtained in the field by ultrasonic and radiographic means agreed with each other, and were further confirmed by the laboratory tests. Crack indications given by one nondestructive method and not concurred by another method may safely be taken as inconsequential on spurious.
ISSN:0022-3131
1881-1248
DOI:10.1080/18811248.1978.9735601