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| {{#Wiki_filter:uP LAKE ENGINEERING CO. | | {{#Wiki_filter:}} |
| P.O. Box 296 1O Austin Avenue Greenville, RI 02828 Tel: 401-949-4733 Fax: 401-949-0220 May 7, 2021 U S Nuclear Regulatory Commission Attn : Document Control Room Washington, DC 20555-0001
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| ==Subject:==
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| Sixth Interim Notification per 10 CFR Part 21 Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 This letter is a follow up to our previous notification {{letter dated|date=February 17, 2021|text=letter dated February 17, 2021}} pertaining to the above subject.
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| 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.
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| FACILITY STATUS RE: BATCH 17BLVS293 FLUID COMMENTS Millstone Fluid used in some installed snubbers No substantial safety hazards Grand Gulf Fluid used in some installed snubbers No substantial safety hazards Beaver Valley Fluid used in some installed snubbers No substantial safety hazards Sequoyah Fluid used in one installed snubber No substantial safety hazards Peach Bottom Fluid not used in installed snubbers No substantial safety hazards Duane Arnold Fluid not used in installed snubbers No substantial safety hazards Fitzpatrick Fluid used in some installed snubbers No substantial safety hazards Seabrook Fluid used in some installed snubbers No substantial safety hazards Waterford 3 Fluid used in one installed snubber No substantial safety hazards NTS Use status to be determined by facility Evaluation ongoing Palisades Fluid used in some installed snubbers 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 the facilities listed above.
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| Our present goal is to complete our evaluation by July 6, 2021 at which time a determination will have been made as to whether 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.
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| US Nuclear Regulatory Commission May 7, 2021 Fifth 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.
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| Very truly yours, LAKE ENGINEERING COMPANY D. P. Brown , P.E.
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| President DPB/d/let050721 .nrc cc: P. Guay - QA Mgr.}}
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