05000354/LER-2023-001-02, Technical Specification Required Shutdown Due to Declaring the Suppression Chamber and Primary Containment Inoperable
| ML23269A205 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 09/25/2023 |
| From: | Agster T Public Service Enterprise Group |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| LR-N23-0064 LER 2023-001-02 | |
| Download: ML23269A205 (1) | |
| Event date: | |
|---|---|
| Report date: | |
| 3542023001R02 - NRC Website | |
text
PSEG Nuclear LLC P.O. Box 236, Hancocks Bridge, NJ 08038-0236 LR-N23-0064 September 25, 2023 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-001 Hope Creek Generating Station Renewed Facility Operating License No. NPF-57 Docket No. 50-354 PSEG Nud1mr LLC 10CFR50.73
Subject:
Licensee Event Report 2023-001-02, Technical Specification Required Shutdown due to Declaring the Suppression Chamber and Primary Containment Inoperable In accordance with 10 CFR 50. 73, PSEG Nuclear LLC submits Licensee Event Report (LER) 2023-001-02. This second supplement removes an erroneous _value for the amount of mechanical interference.
There are no regulatory commitments contained in this letter.
Please contact Mr. Harry Balian at (856) 339 - 2173 if you have questions.
Sincerely, Thomas R. Agster Plant Manager, Hope Creek Generating Station Attachment: Licensee Event Report 2023-001-02
Page 2 LR-N23-0064 cc:
USNRC Regional Administrator Region 1 USNRC NRR Project Manager - Hope Creek USNRC Senior Resident Inspector - Hope Creek NJ Department of Environmental Protection, Bureau of Nuclear Engineering President & Chief Nuclear Officer, PSEG Nuclear LLC Site Vice President, Hope Creek Plant Manager, Hope Creek Vice President, PSEG Nuclear Engineering Executive Director Regulatory Affairs & Nuclear Oversight Director Site Regulatory Compliance, Regulatory Affairs Manager, Nuclear Oversight Corporate Commitment Coordinator, PSEG Nuclear LLC Records Management (Record Type 3E.111)
Abstract
On April 30, 2023, Hope Creek Generating Station (HCGS) completed a technical specification (TS) required shutdown because limiting condition for operation (LCO) 3.6.1.1, Primary Containment Integrity, was not met. LCO 3.6.1.1 was not met because drywell-to-torus differential pressure could not be established to perform surveillance requirement (SR) 4.6.2.1.f, and LCO 3.6.2.1, SUPPRESSION CHAMBER, could not be met. HCGS demonstrated containment Operability and returned to power operation.
This licensee event report (LER) supplement provides the results of a root cause evaluation (RCE).
The direct cause was mechanical interference that prevented seating of one torus-to-drywell vacuum breaker and the root cause was failure to adequately assess and manage risk associated with torus-to-drywell vacuum breaker maintenance.
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- 3. LER NUMBER YEAR SEQUENTIAL NUMBER REV NO.
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CORRECTIVE ACTIONS
HCGS identified bypass leakage through one torus-to-drywell vacuum breaker, completed repairs, satisfactorily performed SR 4.6.2.1.f, and returned to power operation on May 6, 2023.
HCGS established corrective actions to improve procedures so that high risk and non-recoverable work is better defined and identified. Non-recoverable and infrequently performed work associated with TS structures, systems, or components will be defined as high risk. Risk classification for identified non-recoverable activities will be reassessed.
An extent of condition review for similar work will be completed. Risk classification of all eight torus-to-drywell vacuum breaker PMs will be reassessed.
HCGS established additional corrective actions to resolve the contributing causes. These include procedure enhancements, reinforcing station expectations, and fleet wide communications of the learnings provided by this event.
COMMITMENTS
There are no regulatory commitments in this LER.
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Hope Creek Generating Station 354 2023 001 02
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