05000312/LER-1978-008-02, /02T-0:on 780804,analysis Showed Atypical Weld Filler Wire W/High Silicon & Low Nickel Contents in Archive Weldments.Wire Mixed by Supplier W/Shipment of Mn-Mo-Ni Filler Wire.Caused by Inadequate QA

/02T-0:on 780804,analysis Showed Atypical Weld Filler Wire W/High Silicon & Low Nickel Contents in Archive Weldments.Wire Mixed by Supplier W/Shipment of Mn-Mo-Ni Filler Wire.Caused by Inadequate QA

ML20147B306
Person / Time
Site:	Rancho Seco
Issue date:	08/15/1978
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML20147B275	List: 05000312/LER-1978-008, Forwards LER 78-008/02T-0 05000312/LER-1978-008-02, /02T-0:on 780804,analysis Showed Atypical Weld Filler Wire W/High Silicon & Low Nickel Contents in Archive Weldments.Wire Mixed by Supplier W/Shipment of Mn-Mo-Ni Filler Wire.Caused by Inadequate QA
References
LER-78-008-02T, LER-78-8-2T, NUDOCS 7810100069
Download: ML20147B306 (1)

LER-1978-008, /02T-0:on 780804,analysis Showed Atypical Weld Filler Wire W/High Silicon & Low Nickel Contents in Archive Weldments.Wire Mixed by Supplier W/Shipment of Mn-Mo-Ni Filler Wire.Caused by Inadequate QA

Event date:
Report date:
3121978008R02 - NRC Website

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NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (774 LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: l l l l l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

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EVENT DESCRIPTION AND PROGABLE CONSEQUENCES h 10121 l On Aunust 4, 1978, B&W reported that as a result of chemical analysis I

ITTTII performed on archive weldments they discovered that weld filler wire j

t 10141 I atypical of the weld filler wire used by B&W In conntruction of nuclear j f

O s i pressure vessels was unknowlingly mixed by thc. supplier with a shipment ;

10 is i i to Mn-Mo-Ni filler wire.

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