ML20296A276

Lake Engineering Co. - Third Interim Notification Per 10 CFR Part 21 - Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293

ML20296A276
Person / Time
Site:	Beaver Valley, Millstone, Peach Bottom, Grand Gulf, Sequoyah, Seabrook, Duane Arnold, FitzPatrick
Issue date:	10/06/2020
From:	David Brown Lake Engineering Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML20296A276 (2)

Text

LAKE ENGINEERING CO.

P.O. Box296 10 Austin Avenue Greenville, RI 02828 Tel: 401-949-4733 Fax: 401-949-0220 October 6, 2020 U S Nuclear Regulatory Commission Attn: Document Control Room Washington, DC 20555-0001

Subject:

Third Interim Notification per 10 CFR Part 21 Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 This letter is a follow up to our initial notification letter dated June 8, 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 purchase orders which specified that the requirements of 10 CFR Part 21 are applicable.

• FACIUTY

,: ',', "" "f,.

• -sTAT.USRE:*BATCHt7BLVS293*FLlJID' Millstone Fluid used in some installed snubbers , No substantial safety hazards Grand Gulf Use. status to be determined by facility Evaluation ongoing 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 determined by facility Evaluation ongoing 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 Evaluation ongoing NTS Use status to be determined by facility Evaluation ongoing Lake Engineering Company shall continue in its evaluation to determine whether the subject anomalies represent defects which could *create a substantial safety hazard. Determination in this regard shall continue to involve interaction, between Lake Engineering Company and thef facilities H~ted above.

Our goal is to complete our evaluation by December 5, 2020 at which time a determination will !")aye been made as-towhether a substantial safety hazard exists. If additional time is required for the above determination, an interim report shall be submitted that shall include an updated completion date.

U S Nuclear Regulatory Commission October 6, 2020 Second Interim Notification per 10 CFR Part 21 Page2 Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 If there are any questions or if additional information is required, please contact the writer using the contact information provided above or by email at dbrown@lakeengineeringri.com.

Very truly yours, LAKE ENGINEERING COMPANY D. P. Brown, P.E.

President DPB/d/let100620. nrc cc: P. Guay- QA Mgr.