Name of firm constructing or supplying the
basic component which fails to comply or contains a defect: OFI Fabrication, Richmond,
VA.
Safety Hazard: Failure of turnbuckles could ultimately cause a failure of IROFS41 (i.e. breach of UF6 piping) during a seismic event resulting in release of licensed material, but this release would not exceed 10 CFR 70.61 requirements for the public or workers.
The date on which the information or such defect or failure to comply was obtained: January 28, 2011.
In a case of a basic component which contains a defect or a failure to comply, the number and location of all such components in use at or supplied for the URENCO USA Facility: Currently there are 164 non-defective components installed and 96 non-defective components in storage.
The corrective action which has been, is being, or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action: Replacement NQA-1 turnbuckles were installed; and the Receipt Inspection Plan (RIP) for turnbuckles (collar as well as paddle assembly) was revised to include 100 percent verification of thread tolerances. All out of tolerance turnbuckle collars were returned to the vendor.
Any advice related to the defect or failure to comply about the facility, activity, or
basic component that has been, is being, or will be given to purchasers or licensees: Implement 100 percent verification of
turnbuckle collar thread tolerances using appropriate 'Go-No Go' thread
gauges.