Headquarters Daily report JUNE 09, 1994 *************************************************************************** REPORT NEGATIVE NO INPUT ATTACHED INPUT RECEIVED RECEIVED HEADQUARTERS X REGION I X REGION II X REGION III X REGION IV X *************************************************************************** PRIORITY ATTENTION REQUIRED MORNING REPORT - HEADQUARTERS JUNE 9, 1994 MR Number: H-94-0058 NRR DAILY REPORT ITEM GENERIC COMMUNICATIONS BRANCH/EVENTS ASSESSMENT BRANCH DIVISION OF OPERATING REACTOR SUPPORT OFFICE OF NUCLEAR REACTOR REGULATION Subject: N/A NRC Information Notice 94-43, "Determination of Primary-to-Secondary Steam Generator Leak Rate," will be issued June 10, 1994. The NRC is issuing this information notice to alert licensees to problems that may exist in methods used to determine steam generator primary-to-secondary leak rates that could lead to the calculation of unconservative leak rates. Technical contacts: Thomas Koshy, NRR (301) 504-1176 James Reese, RIV (510) 975-0237 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION I JUNE 9, 1994 Licensee/Facility: Notification: New Hampshire Yankee MR Number: 1-94-0065 Seabrook 1 Date: 06/09/94 Manchester,New Hampshire SRI Phone Call Dockets: 50-443 PWR/W-4-LP Subject: OUTAGE EXTENDED SIX WEEKS Reportable Event Number: N/A Discussion: On June 8, 1994, the licensee informed Region I that the current outage will be extended six additional weeks from the planned July 9, 1994, end date to perform inspections of all four reactor coolant pumps. The announcement follows the discovery of one reactor coolant pump (RCP) turning vane bolt, one intact bolt locking cup and parts of another locking cup in the Seabrook reactor vessel. The RCP turning vanes are held in place by 23 bolts. Each bolt is secured against loosening by a locking cup - a captive cup inserted before the bolt is installed. The cup is held in place by two stamped shoulders which fit into mating holes on the flange. After the bolt is installed, the upper edge of the cup is peened over the bolt in two places to secure the bolt. Clearances are such that the cup should not be able to be removed while the bolt is in place. The bolts are 1 1/2 inches in diameter, 10 inches long, and weigh about 15 pounds. There are a total of 36 RCPs with similar design in service. Westinghouse is evaluating the need for a Part 21 notification. Regional Action: Resident followup. Contact: John Rogge (610)337-5146