Morning Report for August 31, 2001
Headquarters Daily Report AUGUST 31, 2001 *************************************************************************** REPORT NEGATIVE NO INPUT ATTACHED INPUT RECEIVED RECEIVED HEADQUARTERS REGION I REGION II X REGION III X REGION IV PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II AUGUST 31, 2001 Licensee/Facility: Notification: Virginia Power Co. MR Number: 2-01-0016 Surry 1 2 Date: 08/31/01 Surry,Virginia Dockets: 50-280,50-281 PWR/W-3-LP,PWR/W-3-LP Tennessee Valley Authority Sequoyah 1 2 Soddy-Daisy,Tennessee Dockets: 50-327,50-328 PWR/W-4-LP,PWR/W-4-LP Subject: DEGRADED BEARING SURFACES IN GM/EMD EMERGENCY DIESEL GENERATORS Discussion: Degradation was found in the piston bearing inserts and piston pin surfaces of the #3 and #1 emergency diesel generators (EDGs) at the Surry Nuclear Power Station and the 2B-B EDG at the Sequoyah Nuclear Power Station during April, July, and August 2001, respectively. Both plants employ General Motors/Electromotive Division (GM/EMD) diesels and both licensees identified the degraded surfaces after inspections to followup on elevated concentrations of silver (Ag) in the lubricating oil. The piston bearing inserts on EMD diesels are plated with Ag, so an increasing concentration of Ag in the lube oil is an indicator of excessive wear. The damaged components were found on two diesel engines even though the Ag concentrations were not above the vendor recommended action level. At lube oil Ag concentrations above 2.0 parts per million (ppm), the vendor (EMD) recommends additional analysis of the lube oil, and internal component inspections to identify and correct the degraded conditions. The action level is based upon expected even wear patterns in all cylinders. These findings indicate the potential that the action level for elevated Ag concentration in the lube oil may not be appropriate. In April, after lube oil sample results showed Ag concentrations above the action level, Surry found that 7 of 20 piston bearings exhibited significant damage such that the engine would not have been capable of performing its intended function if called upon. The licensee found the damage by physically inspecting the piston pins for signs of distress. Also, they identified heavy debris in the strainers and at the bottom of the oil pan. (LER 50-280, 281/2001-01) Inspections were also conducted of the #1 EDG at Surry in July, and of the # 2B-B EDG at Sequoyah in August, due to increasing Ag concentrations in the lube oil. The Ag concentration at Surry was approximately 1.2 ppm and at Sequoyah approximately 1.5 ppm. One piston bearing in each of these diesels exhibited damage which could have challenged the ability of the EDGs to run for a prolonged period of time. Sequoyah has also observed that the 1A-A EDG had 0 ppm Ag until 8/01/2001, when the Ag concentration increased to a reported value of 1.0 ppm. The 1A-A EDG was placed out of service for inspection. The degraded components have been replaced and the EDGs returned to REGION II MORNING REPORT PAGE 2 AUGUST 31, 2001 MR Number: 2-01-0016 (cont.) operable status at both Surry and Sequoyah, with the exception of 1A-A EDG at Sequoyah which remains out of service for inspection. The other EMD diesels at Region II nuclear power plants have been verified to have Ag concentrations less than 1.0 ppm with no observed upward trend. Regional Action: Follow licensee actions and obtain sufficient information to support development of generic commmunication. For information only. Contact: Kerry Landis (404)562-4530 _ REGION III MORNING REPORT PAGE 2 AUGUST 31, 2001 Licensee/Facility: Notification: United States Enrichment Corporation MR Number: 3-01-0028 Paducah Gaseous Diffusion Plant Date: 08/30/01 Paducah,Kentucky Resident Inspectors Office Dockets: 07007001 Subject: PAPER, ALLIED-INDUSTRIAL, CHEMICAL AND ENERGY UNION LOCAL 5-550 AND USEC AGREE TO TEMPORARY CONTRACT EXTENSION Discussion: On July 31, 2001 the union contract between the Paper, Allied-Industrial, Chemical and Energy (PACE) Union Local 5-550 and the United States Enrichment Corporation (USEC) expired. The PACE Union represents about 700 union workers at the Paducah Gaseous Diffusion Plant. Since expiration of the contract, union workers have continued to work based on a day-to-day contract extension agreement. On the evening of August 29, 2001, the PACE Union and USEC reached a seven-point pact agreement to extend the original contract until November 15, 2001. In the contract extension agreement, the PACE Union committed not to strike through November 15, 2001, and USEC committed not to lay off any hourly employees through November 15, 2001. Since the original contract was extended, subject to some specific caveats, for a finite period of time, the union members were not required to ratify the extension agreement. However, when a new contract settlement agreement is reached between USEC and the PACE Union, the contract settlement agreement is required to be ratified by the union members. Regional Action: None Contact: Robert G. Krsek (270)442-7118 Patrick L. Hiland (630)829-9603 _
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Page Last Reviewed/Updated Wednesday, March 24, 2021