05000280/LER-2022-003, Loss of Emergency Switchgear Room Cooling Due to Use of Incorrect Air Handler Fan V-Belts
| ML22316A021 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 11/11/2022 |
| From: | Mladen F Virginia Electric & Power Co (VEPCO) |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| 22-355 LER 2022-003-00 | |
| Download: ML22316A021 (1) | |
| Event date: | |
|---|---|
| Report date: | |
| 2802022003R00 - NRC Website | |
text
10CFR50.73 Virginia Electric and Power Company Surry Power Station 5570 Hog Island Road Surry, Virginia 23883 November 11, 2022 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555-0001
Dear Sir or Madam:
Serial No.:
22-355 SPS:SCN RO Docket No.: 50-280 License No.: DPR-32 Pursuant to 10CFR50.73, Virginia Electric and Power Company hereby submits the following Licensee Event Report applicable to Surry Power Station Unit 1.
Report No. 50-280/2022-003-00 This report has been reviewed by the Station Facility Safety Review Committee and will be forwarded to the Management Safety Review Committee.
Enclosure Commitments contained in the LER: None Very truly yours, Fred Mladen Site Vice President Surry Power Station cc:
U.S. Nuclear Regulatory Commission, Region II Marquis One Tower, Suite 1200 245 Peachtree Center Ave., NE Atlanta, GA 30303-1257 NRC Senior Resident Inspector Surry Power Station
Abstract
Surry Power Station Unit 1 280 5
Loss of Emergency Switchgear Room Cooling Due to Use of Incorrect Air Handler Fan V-Belts 09 15 2022 2022 003 00 11 11 2022 1
100
Fred Mladen, Surry Power Station Site Vice-President (757) 365-2001 A
VK FAN B860 Y
As part of planned maintenance beginning on 7/29/2022 to 9/15/2022, the air handling unit (AHU) fan V-belts for both of the Unit 1 Emergency Switchgear Room (ESGR) cooling trains (1-VS-AC-6 and 1-VS-AC-7) were replaced. When the AHU was placed in-service, these V-belts eventually failed resulting in the inoperability of one or both of the AHU(s).
The cause of this event was that the V-belt vendor sent a different variant of the BX-99 V-belt ordered (Torq Titan vs. the Grip Notch V-belt expected) and these belts were inadvertently accepted and installed at the station. Contributing to this cause was that there were missed opportunities to recognize that the new V-belts were not the same design as those being replaced.
There were no safety consequences because of this event since the maximum temperature in the room stayed well below the design basis upper limit. Planned corrective actions include procedural enhancements and coaching of personnel to ensure that the parts received at the station comply with those ordered.
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- 3. LER NUMBER YEAR SEQUENTIAL NUMBER REV NO.
9.0 COMMITMENTS
There are no regulatory commitments contained in this report. Actions described in this document represent planned actions and are not regulatory commitments. The planned actions are provided as information only.
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Surry Power Station, Unit 1 280 2022 003 00
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