ML21014A234
| ML21014A234 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Millstone, Peach Bottom, Palisades, Grand Gulf, Sequoyah, Seabrook, Waterford, Duane Arnold, FitzPatrick  |
| Issue date: | 12/07/2020 |
| From: | David Brown Lake Engineering Company |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML21014A234 (2) | |
Text
LAKE ENGINEERING CO.
U S Nuclear Regulatory Commission Attn: Document Control Room Washington, DC 20555-0001 P.O. Box296 10 Austin Avenue Greenville, RI 02828 Tel: 401-949-4733 Fax: 401-949-0220 December 7, 2020 SubJect Fo-urth Interim Notific'atiorf per 10-cFR P8rr2-r-- -
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Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 This letter is a follow up to our previous notification letter dated October 6, 2020 pertaining to the above subject The following table reflects the status of US nuclear plants to which SF1154 fluid from Batch 17BLVS293 was shipped by Lake Engineering Company (LEC) in accordance with purchas~ orders which specified that the requirements of 10 CFR Part 21 are applicable.
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Millstone Fluid used in some installed snubbers No substantial safety hazards Grarid Gulf Use status to be detenilined by facility No substantial safety hazards Beaver Valley Use status to be determined by facility Evaluation ongoing Sequoyah Use status to be determined by facility Evaluation ongoing Peach Bottom Use status to be determined by facility Evaluation ongoing Duane Arnold Use status to be detennined by facility No substantial safety hazards Fitzpatrick Use status to be determined by facility No substantial safety hazards Seabrook Use status to be determined by facility Evaluation ongoing Waterford 3 Use status to be determined by facility No substantial safety hazards NTS Use status to be determined by facility Evaluation ongoing Palisades Use status to be determined by facility Evaluation ongoing Please note that Palisades Station was recently added to the list of plants.since we were adviseci'that a portion of the fluid from that subject batch tnat we shipped to Grand Gulf Station was subsequently shipped to Palisades Station Lake Engineering Company" shall continue ih its evaluation to determine whethe~ the subject anomalies represent defects which could create a su_bstantial safety hazard. Determination in this regard shall continue to involve interaction between Lake Engineering Company and the facilities listed above.
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U S Nuclear Regulatory Commission Fourth Interim Notification per 10 CFR Part 21 December 7, 2020 Page2 Degraded Snubber SF1154 Hydraulic Fluid Batch No 17BLVS293 Our present goal is to complete our evaluation by February 5, 2021 at which time a detennination will have been made as to whether a substantial safety hazard exists. If additional time is required for the above detennination, an interim report shall be submitted that shall include an updated completion date.
If there are any questions or if additional infonnation is required, please contact the writer using the contact infonnation provided above or by email at dbrown@lakeengineeringri.com.
DPB/d/let120720.nrc cc: P. Guay-QA Mgr.
Very truly yours, LAKE ENGINEERING COMPANY D. P. Brown, P.E.
President