United States Nuclear Regulatory Commission - Protecting People and the Environment

LICENSEE: DuBOSE NATIONAL ENERGY SERVICES, IN
SITE: DuBOSE NATIONAL ENERGY SERVICE EN NUMBER: 35093
DOCKET: EVENT DATE: 11-30-98
RX TYPE: EVENT TIME:
VENDORS: NOTIFY DATE: 11-30-98
EMERGENCY CLASS: N/A REGION: 2 STATE: NC TIME: 13:03
OPS OFFICER: FANGIE JONES
10 CFR SECTION: CCCC UNSPECIFIED PARAGRAPH
10 CFR PART 21 REPORT REGARDING INSUFFICIENT PIPE WALL THICKNESS

A potential Part 21 on material shipped to Niagara Mohawk for Unit #2 (Nine Mile Point) was discovered by Niagara Mohawk and reported to the manufacturer. The material was 1 inch stainless steel SA 312 type 304 Schedule 40 pipe. Investigation determined that part of a shipment of about 600 feet did not meet minimum wall thickness. At the time of discovery, 80 feet had been installed in a system that was not operational. The balance of the pipe has been returned to the manufacturer and testing determined three minimum wall thickness violations. The minimum wall thickness violations will be addressed by Niagara Mohawk Design Engineering Department. The manufacturer has determined the apparent cause as "fabrication deficiency" and replaced the pipe.

Page Last Reviewed/Updated Thursday, March 29, 2012