L-17-053, Response to Request for Additional Information Regarding 10 CFR 50.55a Request Numbers PR6 and PR7
| ML17054C280 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 02/22/2017 |
| From: | Richey M FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| CAC MF8340, CAC MF8341, CAC MF8342, CAC MF8343, L-17-053 | |
| Download: ML17054C280 (5) | |
Text
FENOC' RrstEnergy Nuclear Operating Company Marty L. Richey Site Vice President February 22, 2017 L-17-053 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Beaver Valley Power Station, Unit Nos. 1 and 2 Unit 1 Docket No. 50-334, License No. DPR-66 Unit 2 Docket No. 50-412, License No. NPF-73 10 CFR 50.55a Beaver Valley Power Station P.O. Box 4 Shippingport, PA 15077 724-682-5234 Fax: 724-643-8069 Response to Request for Additional Information Regarding 10 CFR 50.55a Request Numbers PR6 and PR7 (CAC Nos. MF8340, MF8341, MF8342 and MF8343)
By letter dated August 31, 2016 (Accession Number ML16245A320) FirstEnergy Nuclear Operating Company (FENOC) requested approval of proposed alternatives and relief requests associated with the fifth and fourth 10-year intervals of the Beaver Valley Power Station, Unit No. 1 and Unit No. 2 inservice testing program for pumps and valves, respectively.
The Nuclear Regulatory Commission (NRG) staff requested additional information to complete its review of 10 CFR 50.55a request numbers PR6 and PR7 in a letter dated February 3, 2017 (Accession Number ML17031A036). FENOC's response to the NRG staff's request for additional information is attached to this letter.
There are no regulatory commitments contained in this submittal. If there are any questions or if additional information is required, please contact Mr. Thomas A. Lentz, Manager-Fleet Licensing, at (330) 315-6810.
Sincerely, <
te~
Marty ~-Ryey
Attachment:
Response to February 3, 2017 Request for Additional Information
Beaver Valley Power Station, Unit Nos. 1 and 2 L-17-053 Page 2 cc: NRC Region I Administrator NRC Resident Inspector NRC Project Manager Director BRP/DEP Site BRP/DEP Representative
ATTACHMENT L-17-053 Response to February 3, 2017 Request for Additional Information Page 1 of 3 The NRC staff's request for additional information (RAI) is provided in bold text followed by the FENOC response.
RAI PR6-1 In Section 3, "Applicable Code Requirement," of the submittal, Table ISTB-3000-1, "lnservice Test Parameters," identifies flow rate as a test parameter, and Note 1 of the table states, in part, that: "... differential pressure or flow rate shall be measured or determined." Note 1 in Table ISTB-3000-1 is applicable to Group B tests. The boric acid transfer pumps are Group A pumps. Explain why Note 1 is referenced in Section 3, if it is not applicable to Group A pumps.
Response
The Beaver Valley Power Station, Unit No. 1 (BVPS-1), boric acid transfer pumps (1CH-P-2A and B) are Group A pumps, and therefore, Note 1 was cited in error. To correct this condition, the second paragraph of PR6 request Section 3, "Applicable Code Requirement," regarding Table ISTB-3000-1, is hereby changed to read as follows:
Table ISTB-3000-1, "lnservice Test Parameters," identifies flow rate as a test parameter.
The Beaver Valley Power Station, Unit No. 2 (BVPS-2) request PR6 does not propose an alternative to ISTB 3000-1. Therefore, this RAI is not applicable to the BVPS-2 request.
RAI PR6-2 Section 6, "Proposed Alternative and Basis for Use," of the submittal states, "separate vibration reference and acceptance criteria values will be used for the different test conditions of the recirculation and full flow tests." Please provide the vibration reference and acceptance criteria values.
Response
Reference and acceptance criteria vibration limits for BVPS-1 pumps 1CH-P-2A and 1 CH-P-28 at recirculation flow and at full flow conditions are provided below in inches per second (in/sec).
Attachment L-17-053 Page 2 of 3 1 CH-P-2A Reference Value and Vibration Limits at Recirculation Flow Pump Bearing Locations1 Reference Accept Limit2 Alert Limit2 (in/sec)
(in/sec)
(in/sec)
Inboard Axial 0.0477 s 0.125 s 0.300 Inboard Horizontal 0.0420 s 0.125 s 0.300 Inboard Vertical 0.0423 s 0.125 s 0.300 Outboard Horizontal 0.0425 s 0.125 s 0.300 Outboard Vertical 0.0341 s 0.125 s 0.300 1 CH-P-2A Reference Value and Vibration Limits at Full Flow Pump Bearing Locations1 Reference Accept Limit2 Alert Limit2 (in/sec)
(in/sec)
(in/sec)
Inboard Axial 0.0470 s 0.125 s 0.300 Inboard Horizontal 0.0418 s 0.125 s 0.300 Inboard Vertical 0.0362 s 0.125 s 0.300 Outboard Horizontal 0.0323 s 0.125 s 0.300 Outboard Vertical 0.0310 s 0.125 s 0.300 1 CH-P-28 Reference Value and Vibration Limits at Recirculation Flow Pump Bearing Locations1 Reference Accept Limit2 Alert Limit2 (in/sec)
(in/sec)
(in/sec)
Inboard Axial 0.0423 s 0.125 s 0.300 Inboard Horizontal 0.0435 s 0.125 s 0.300 Inboard Vertical 0.0629 s 0.157 s 0.377 Outboard Horizontal 0.0263 s 0.125 s 0.300 Outboard Vertical 0.0560 s 0.140 s 0.336 1 CH-P-28 Reference Value and Vibration Limits at Full Flow Pump Bearing Locations1 Reference Accept Limit2 Alert Limit2 (in/sec)
(in/sec)
(in/sec)
Inboard Axial 0.0412 s 0.125 s 0.300 Inboard Horizontal 0.0398 s 0.125 s 0.300 Inboard Vertical 0.0522 s 0.130 s 0.313 Outboard Horizontal 0.0253 s 0.125 s 0.300 Outboard Vertical 0.0420 s 0.125 s 0.300
Attachment L-17-053 Page 3 of 3 Notes:
- 1.
The pump outboard axial location is not accessible.
- 2.
BVPS-1 pump request number PR8 for the next 10-year interval would permit maximum vibration values of 0.125 in/sec for the acceptable limit and 0.300 in/sec for the alert limit when the reference vibration is 0.05 inches per second or less. Other vibration limits would be based on Table ISTB-5121-1, "Centrifugal Pump Test Acceptance Criteria."
BVPS-2 request PR6 does not require separate vibration reference and acceptance criteria values. Therefore, this RAI is not applicable to the BVP.S-2 request.
RAI PR7-1:
In Section 1, "ASME Code Components Affected," of the submittal, the residual heat removal pumps are listed as ASME Class 2 pumps. In Alternative Request Number PR8, the residual heat removal pumps are listed as ASME Class 3 pumps. Please state which classification is correct.
Response
BVPS-1 residual heat removal pumps are American Society of Mechanical Engineers (ASME) Class 2 pumps. Alternative request PR8 indicates that these pumps are ASME Class 3 pumps in error. Therefore, the entry in alternative request PR8, Section 1, "ASME Code Components Affected," for the residual heat removal pumps is hereby corrected to read as follows:
1RH-P-1A and B, Residual Heat Removal Pumps, (Group A, Class 2).
BVPS-2 request PR? does not involve residual heat removal pumps. Therefore, this RAI is not applicable to the BVPS-2 request.