Closeout of IE Bulletin 79-03A: Longitudinal weld defects in ASME SA-312 Type 304 stainless steel pipe

Technical Report · Sat Apr 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/6344603· OSTI ID:6344603

Foley, W. J.; Dean, R. S.; Hennick, A.

Documentation is provided in this report for the closeout of IE Bulletin 79-03A, on the subject of faulty fusion welded austenitic stainless steel pipe (without filler metal) used or planned for use in safety-related systems. The investigation found that the bulletin has been closed administratively for all of the 121 facilities for which responses were required. The bulletin asked licensees for information only and did not include any requirement for corrective action. It is concluded that the concerns of the bulletin have been resolved at all except four facilities (two locations), and a recommendation is given for followup. This bulletin was issued by the NRC on April 4, 1980 as a followup to Bulletin 79-03 (closeout report NUREG/CR-5283). The purpose of the followup bulletin was to obtain further information about the impact of centerline lack of weld penetration (CLP) on the subject pipe. The NRC's concern was based on the finding from responses and investigations for initial Bulletin 79-03 that the ASME Code requirements for volumetric examination of piping were insufficient for detection of CLP. The problem with SA-312/A312 Type 300 Series fusion welded material was found to apply to all manufacturers, not just to the one mentioned in the initial bulletin.

• Research Organization: Parameter, Inc., Elm Grove, WI (USA); Nuclear Regulatory Commission, Washington, DC (USA). Div. of Operational Events Assessment
• OSTI ID: 6344603
• Report Number(s): NUREG/CR-5284; PARAMETER/IE-175; ON: TI89010873
• Country of Publication: United States
• Language: English

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