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 Start dateReporting criterionTitleEvent descriptionSystemLER
ENS 4736524 August 2011 06:00:0010 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluationPotentially Undersized Welds on Centrifuge T-Column Base Plate ConnectorsName of the firm constructing or supplying the basic component which contains the deviation or fails to comply: Engineered Products Department PO Box 2138 Carlsbad, NM 88221 Description of the deviation or failure to comply which is being evaluated : Undersized welds were identified on centrifuge T-column to base plate connectors which are still in construction. The welds do not comply with AWS 01.1 and are currently being evaluated for the potential to cause substantial safety hazards. An extent of condition is in progress to identify any further conditions and to provide weld dimensions to the design agent for engineering analysis. This analysis will determine the ability of the steelwork to perform per design requirements. The date on which the information of suspect deviation defect or failure to comply was obtained: 24 August, 2011 The date on which the evaluation is expected to be complete: 23 November, 2011
ENS 4669628 January 2011 06:00:0010 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluationTurnbuckle Collar Threads Out of ToleranceName 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.