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No. 98-84
May 28, 1998
The Nuclear Regulatory Commission has issued confirmatory orders to GPU Nuclear, Inc. confirming the utility's commitment to complete Thermo-Lag fire barrier corrective actions at Three Mile Island by December 31, 1999; and at Oyster Creek by December 31, 2000,
In a letter to GPU officials, Sam Collins, Director of the NRC's Office of Nuclear Reactor Regulation, said the order was issued because of concern "that some licensees may not be making adequate progress toward resolving the plant-specific issues, and that some implementation schedules may either be too tenuous or too protracted." The Oyster Creek Nuclear Generating Station, located in Ocean County, New Jersey, and Three Mile Island Unit 1, located near Harrisburg, Pennsylvania, are among them.
Thermo-Lag is a fire barrier material manufactured and supplied by Thermal Science, Inc., of St. Louis, Missouri, and has been used to provide fire-resistance to wiring and equipment at nuclear plants. The NRC has been concerned that Thermo-Lag 330-1 fire barrier material installed by some of its licensees may not provide the intended level of fire protection and that licensees thus may not be meeting regulatory requirements. Between 1992 and 1994, the NRC staff issued letters to all nuclear utilities asking licensees to submit plans and schedules for resolving the issue. All licensees with Thermo-Lag fire barriers have implemented around-the-clock "fire watches," using workers to patrol vital plant areas on a regular basis to watch for signs of fire until corrective actions have been completed.
In his letter to GPU officials, Collins noted that NRC has been meeting with licensees to review their progress in completing implementation of their fire barrier programs, but have been concerned about slow progress on resolution of the issue at certain plants.
GPU was one of the licensees with which NRC has periodically held meetings. At these meetings, the NRC reviewed GPU's schedule for Thermo-Lag corrective actions and concluded they are reasonable. The company formally agreed earlier this month to the terms of the confirmatory order.
About 20 other plants are expected to receive similar orders in the coming months.
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