On October 26, the 1C Charging Pump failed to close when demanded from the control room. The cause was that the latch check switch did not make up electrically. In this instance, the angle of attack by the cantilever arm was not the issue, but rather the throw imposed on the switch was inadequate to cause the switch to make up. Interviews with Farley technicians indicated that they had made adjustments to this particular mechanism. They had either created or failed to correct this condition. Since the pump was not required to be
operable in this mode, there were no consequences. As illustrated above, the licensee was challenged with several quality issues concerning the breakers upon receipt from Areva. Pending review of the dedication process and quality control at Areva, the breaker vendor, and their compliance with Part 21 guidance for reporting non-conformance issues, this concern is carried forward as an Unresolved Item and is tracked under
URI 05000348,364/2007010-004, Quality Control of Replacement Breakers During Manufacturing/Dedication.
