ML14280A335
| ML14280A335 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 09/22/2014 |
| From: | Martha Barillas Plant Licensing Branch II |
| To: | Caves J Duke Energy Corp |
| References | |
| MF4294 | |
| Download: ML14280A335 (4) | |
Text
1 NRR-PMDAPEm Resource From:
Barillas, Martha Sent:
Monday, September 22, 2014 4:58 PM To:
Caves, John; Crystian.Ioppolo@duke-energy.com
Subject:
Harris TS 3.3-4 LOOP LAR TAC No. MF4294 Attachments:
Harris TS 3.3-4 LOOP LAR draft RAI.docx John and Crystian, Please see attached draft RAI for the Harris TS 3.3-4 LOOP Undervoltage Setpoints LAR (TAC No. MF4294) and let me know if you need a clarification call with the staff.
We request a response by October 24, 2014.
A letter will be forthcoming.
Respectfully, Martha Barillas Project Manager Shearon Harris & H. B. Robinson NRR/DORL/Licensing Branch II-2 US Nuclear Regulatory Commission 301-415-2760
Hearing Identifier:
NRR_PMDA Email Number:
1614 Mail Envelope Properties (Martha.Barillas@nrc.gov20140922165800)
Subject:
Harris TS 3.3-4 LOOP LAR TAC No. MF4294 Sent Date:
9/22/2014 4:58:00 PM Received Date:
9/22/2014 4:58:00 PM From:
Barillas, Martha Created By:
Martha.Barillas@nrc.gov Recipients:
"Caves, John" <John.Caves@duke-energy.com>
Tracking Status: None "Crystian.Ioppolo@duke-energy.com" <Crystian.Ioppolo@duke-energy.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 471 9/22/2014 4:58:00 PM Harris TS 3.3-4 LOOP LAR draft RAI.docx 26578 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
DRAFT REQUEST FOR ADDITIONAL INFORMATION SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION TABLE 3.3-4 LOSS OF OFFSITE POWER 6.9 kV EMERGENCY UNDERVOLTAGE PRIMARY SETPOINTS (TAC NO. MF4294)
By letter dated June 19, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML14174A118), Duke Energy Progress, Inc., the licensee, proposed to amend Shearon Harris Nuclear Power Plant Unit 1 (HNP) Technical Specifications and Operating License to revise TS 3.3.2, Engineered Safety Features Actuation System Instrumentation, Table 3.3-4 Engineered Safety Features Actuation System Instrumentation Trip Setpoints. Specifically, the Functional Unit 9.a, Loss-of-Offsite Power 6.9 kV Emergency Bus Undervoltage - Primary, instrument trip setpoint and associated allowable value are being revised to correct a non-conservative TS. The proposed amendment requests Technical Specifications changes in accordance with Technical Specification Task Force Traveler TSTF-493, Revision 4, Clarify Application of Setpoint Methodology for LSSS Functions.
To complete its review, the Nuclear Regulatory Commission (NRC) staff requests the following request for additional information (RAI):
The application states:
Under TSTF-493-A, Option A, two Notes are added in the Surveillance Requirements column in the Specification's Function table. If the specification does not include a Surveillance Requirements column or a Function table, then the Notes are added to the applicable Surveillance Requirements. Notes are added to SRs that verify trip setpoint settings. These two Notes are applied to the Functions listed in Attachment A to TSTF-493-A, Option A. The loss of voltage function (i.e., the HNP Loss-of-Offsite Power Function) is not listed in Attachment A to TSTF-493-A, Option A. However, HNP TS Table 3.3-4 Functional Unit 6.e, Auxiliary Feedwater - Loss-of-Offsite Power Start Motor-Driven Pumps and Turbine-Driven Pump refers to TS Table 3.3-4 Item 9 for all Loss-of-Offsite Trip Setpoint and Allowable Values. Auxiliary Feedwater - Loss of Offsite Power is listed in Attachment A to TSTF-493, Option A. Therefore, the two Notes added by TSTF-493-A are incorporated for the TS Table 3.3-4 Functional Unit 9.a loss of voltage function.
HNP TS 3.3.2, Table 3.3-4, Engineered Safety Features Actuation System Instrumentation Trip Setpoints, Functional Unit 6.e, Auxiliary Feedwater - Loss-of-Offsite Power Start Motor-Driven Pumps and Turbine-Driven Pump states, See Item 9.
below for all Loss-of-Offsite Trip Setpoints and Allowable Values. In addition, HNP TS 3.3.2 Table 4.3-2, Engineered Safety Features Actuation System Instrumentation Surveillance Requirements, Functional Unit 6.e, Auxiliary Feedwater - Loss-of-Offsite Power Start Motor-Driven Pumps and Turbine-Driven Pump states, See Item 9. below for all Loss-of-Offsite Power Surveillance Requirements.
STSB RAI 1:
HNP TS 3.3.2, Table 3.3-4 Functional Unit 6.e refers to Item 9. Item 9 is Loss of Offsite Power functional unit and it consists of two functions 9.a, 6.9 kV Emergency Bus Undervoltage -
Primary (Loss of Voltage), and 9.b, 6.9 kV Emergency Bus Undervoltage -Secondary (Degraded Voltage).
Explain why the TSTF-493 Notes 1, 2 were not applied to both functions 9.a and 9.b. (only 9a.
states See Notes 1, 2).
STSB RAI 2:
TSTF-493 requires that if the specification does not include a Surveillance Requirements column or a Function table, then the Notes are added to the applicable Surveillance Requirements.
Explain why the TSTF-493 Notes were not applied to the channel calibration and trip actuating device operational test surveillance requirements in Table 4.3-2 for channel functional unit 9.a and 9.b.
To support a timely review, the licensees response to the RAI is requested by October 24, 2014.