Headquarters Daily report APRIL 07, 1995 *************************************************************************** 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 - REGION I APRIL 7, 1995 Licensee/Facility: Notification: Maine Yankee Atomic Power Co. MR Number: 1-95-0052 Maine Yankee 1 Date: 04/07/95 Wiscasset,Maine Dockets: 50-309 PWR/CE Subject: NDE RESULTS ON STEAM GENERATOR PULLED TUBES Reportable Event Number: N/A Discussion: Maine Yankee has completed laboratory examination of two of three steam generator tubes which had been pulled to confirm the results of eddy current testing (ECT). Two of the tubes which showed no evidence of inside diameter (ID) circ-cracks from standard MRPC ECT, but did show indications when examined by a Plus Point Probe, have been confirmed to have ID circ-cracks. One exhibited an 24% average through-wall (45% max) 360 degree crack, and the other 23% average through-wall (37% max) 360 degree crack. Regional Action: Resident and region-based inspectors continue to follow licensee actions. Contact: Bill Lazarus (610)337-5231 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II APRIL 7, 1995 Licensee/Facility: Notification: General Electric Co. MR Number: 2-95-0041 General Electric Co. Date: 04/07/95 Wilmington,North Carolina Dockets: 07001113 License No: SNM-1097 URANIUM FUEL FABRICATION Subject: CANS OF WASTE EXCEEDING MASS STORAGE LIMIT Reportable Event Number: N/A Discussion: On April 6, 1995, General Electric reported pursuant to NRC Bulletin 91-01 that analysis results for 5 cans of secondary nitrate waste generated prior to February 10, 1993 and stored in a high density (close spacing) array showed that the cans exceeded the 40 gram U-235 mass limit for high density storage. The licensee's measurements showed the 5 cans (4 of 5-gallon size and 1 of the 3-gallon size) contained between 142 and 526 grams U-235. The licensee estimated that the Keff of the high density array would have been between 0.88 and 0.90 if all containers had been filled to 526 grams U-235 with the moderation (low) and reflection (low) as had actually existed (substantially subcritical.) Subsequent to February 10, 1993, the mass limit for a high density array was established based on a gross weight of 12 kilograms for a 3- gallon can which is equivalent to about 440 grams U-235 (as opposed to the 40 gram limit being used prior to then.) All cans of this material type (secondary nitrate waste) were immediately removed to a regular density (wider spacing) storage array which has a substantially higher mass limit per can (approximately 1 Kg U-235). The licensee has established an investigation team to determine the root cause and corrective actions. Regional Action: Region II has dispatched an inspector to the site to review the licensee's actions, and had discussed the issue with NMSS and the EDO's office. Contact: E. J. McAlpine (404)331-5547 PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION III APRIL 7, 1995 Licensee/Facility: Notification: Commonwealth Edison Co. MR Number: 3-95-0051 Dresden 2 Date: 04/07/95 Morris,Illinois Dockets: 50-237 BWR/GE-3 Subject: UNIT 2 START UP Reportable Event Number: N/A Discussion: Dresden Unit 2 was shut down on March 6, 1995, due to an inoperable diesel generator. On April 5 at about 4:50 a.m. (CST) Unit 2 was taken critical. On April 7 at about 3:28 a.m. Unit 2 was synchronized to the grid ending its forced outage. The unit was initially made critical on March 18; however, it was shut down due to a steam leak on the steam jet air ejector. Further startup efforts were delayed by station management when a Unit 3 thermal limit was exceeded on March 27 during scram time testing and when several events over the weekend of April 1 indicated weaknesses in operator panel attentiveness. Regional Action: The residents observed the startup activities including management oversight. Contact: P.L. HILAND (708)829-9603