Headquarters Daily Report JUNE 14, 1996 *************************************************************************** REPORT NEGATIVE NO INPUT ATTACHED INPUT RECEIVED RECEIVED HEADQUARTERS û REGION I û REGION II û REGION III û REGION IV û PRIORITY ATTENTION REQUIRED MORNING REPORT - HEADQUARTERS JUNE 14, 1996 MR Number: H-96-0046 NRR DAILY REPORT ITEM GENERIC COMMUNICATIONS Information Notice 96-35, "FAILURE OF SAFETY SYSTEMS ON SELF-SHIELDED IRRADIATORS BECAUSE OF INADEQUATE MAINTENANCE AND TRAINING," was issued on June 11, 1996 This notice was issued to irradiator licensees and vendors to alert them to two incidents where safety interlocks on self-shielded irradiators (Category I) failed to prevent inadvertant exposure. The causes of these exposures stemmed from a lack of appropriate maintenance and/or worker training. Contacts: Douglas Broaddus, NMSS Anthony Kirkwood, NMSS (301) 415-5847 (301) 415-6140 Internet:dab@nrc.gov Internet:ask@nrc.gov _ HEADQUARTERS MORNING REPORT PAGE 2 JUNE 14, 1996 MR Number: H-96-0047 NRR DAILY REPORT ITEM GENERIC COMMUNICATIONS NRC Information Notice 96-37, "Inaccurate Reactor Water Level Indication and Inadvertent Draindown During Shutdown," dated June 18, 1996. The NRC is issuing this information notice to alert addressees to potential operational errors that may result in the inadvertent loss of reactor coolant system inventory during refueling operations. Technical contacts: Muhammad M. Razzaque, NRR (301) 415-2882 Morris Branch, RII (804) 357-2101 Robert A. Benedict, NRR (301) 415-1157 _ REGION III MORNING REPORT PAGE 3 JUNE 14, 1996 Licensee/Facility: Notification: Commonwealth Edison Co. MR Number: 3-96-0062 Zion 2 Date: 06/14/96 Zion,Illinois Dockets: 50-304 PWR/W-4-LP Subject: PORTABLE FILTRATION UNIT DROPPED SEVEN FEET IN TRANSFER CANAL Discussion: On June 12, 1996, at 5:10 p.m., while inspecting the portable filtration vacuum unit for loose air leak connections, the unit fell seven feet into the transfer canal, which was drained. The licensee determined that no radioactive contaminations occurred and the weir gate and seal were intact. The filtration vacuum unit apparently fell due to improper rigging of the unit to the fuel building overhead crane hook. Two slings, which were attached to the filtration vacuum unit, were to be guided onto the fuel building overhead crane hook by a rope; however, the rope was mistakenly connected to the hook instead of the two slings. The rope broke and caused the filtration vacuum unit to fall. The unit fell straight down and landed on the transfer canal island (TCI). The TCI is a permanent steel covered concrete platform, approximately 4 feet thick, which spans the transfer canal from its outer wall to just below the weir gate. This TCI is approximately 25 feet above the floor of the transfer canal. The filtration unit weight is approximately 1480 pounds; when the unit is operating, the unit accounts for 1400 pounds while water accounts for the remaining 80 pounds. The licensee performed hourly monitoring of the spent fuel pit (SFP) for several hours to ensure a leak had not developed in the SFP as a result of this event. The licensee terminated all transfer canal work and initiated a root cause investigation. In addition, the licensee has plans to inspect the filtration unit and welds on the TCI for damage. Regional Action: The resident inspectors will continue to monitor the licensee's actions in addressing the problems which have occurred with the transfer canal work project. Contact: L. F. MILLER (708)829-9629 _