ML15035A060

Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt TSTF-426, Revise or Add Actions to Preclude Entry Into LCO 3.0.3 - RITSTF Initiatives 6B & 6C, (MF4417)

ML15035A060
Person / Time
Site:	Millstone
Issue date:	01/29/2015
From:	Mark D. Sartain Dominion, Dominion Nuclear Connecticut
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
14-624, TAC MF4417
Download: ML15035A060 (11)

Text

Dominion Nuclear Connecticut, Inc.

5000 Dominion Boulevard, Glen Allen, VA 23060 j Do nion Web Address: www.dom.com

1. January 29, 2015 U. S. Nuclear Regulatory Commission Serial No.14-624 Attention: Document Control Desk NSSL/WDC RO Washington, DC 20555 Docket No. 50-336 License No. DPR-65 DOMINION NUCLEAR CONNECTICUT, INC.

MILLSTONE POWER STATION UNIT 2 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-426, "REVISE OR ADD ACTIONS TO PRECLUDE ENTRY INTO LCO 3.0.3 - RITSTF INITIATIVES 6B & 6C." (MF4417)

By letter dated June 30, 2014, Dominion Nuclear Connecticut, Inc. (DNC) submitted a License Amendment Request (LAR) for Millstone Power Station Unit 2. The LAR requests the adoption of approved Technical Specification Task Force (TSTF) traveler TSTF-426, Revision 5, "Revise or Add Actions to Preclude Entry into LCO 3.0.3 -

RITSTF Initiatives 6b and 6c," which is an approved change to the Standard Technical Specifications (STS). The proposed changes would replace required actions requiring either a default shutdown or explicit limiting condition for operation (LCO) 3.0.3 entry with a required action based on the risk significance for the system's degraded condition which varies from 8 to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

In an email dated December 15, 2014, the Nuclear Regulatory Commission transmitted a request for additional information (RAI) related to the submittal. Attachment 1 to this letter provides DNC's response to the RAI. Attachment 2 provides revised marked-up Technical Specification pages.

If you have any questions or require additional information, please contact Wanda Craft at (804) 273-4687.

Sincerely, Mark D. Sartain I CRAIG D SLY Vice President - Nuclear Engineering I Notary Public I Commonwealth of Virginia]

I Reg. # 7518653 COMMONWEALTH OF VIRGINIA ) My Commission Expires December 31, 20&I COUNTY OF HENRICO The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by Mark D.

Sartain, who is Vice President - Nuclear Engineering of Dominion Nuclear Connecticut, Inc. He has affirmed before me that he is duly authorized to execute and file the foregoing document in behalf of that company, and that the statements in the document are true to the best of his knowledge and belief.

Acknowledged before me this ____ day of 3'"tkr.j,, 2015.

My Commission Expires: ,( b 1 ,K\c,

/& Jfl flotary-Public *.{[

Serial No.14-624 Docket No. 50-336 Page 2 of 2 Commitments made in this letter: None Attachments:

1. Response to Request for Additional Information Regarding License Amendment Request to Adopt TSTF-426, Revision 5, "Revise or Add Actions to Preclude Entry Into LCO 3.0.3 - RITSTF Initiatives 6b and 6c

2. Marked-up Technical Specification Pages 3/4 4-3 with Revised Insert A and 3/4 4-4 with Revised Insert A cc: U.S. Nuclear Regulatory Commission Region I 2100 Renaissance Blvd Suite 100 King of Prussia, PA 19406-2713 Mohan C. Thadani Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 08 B1 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Millstone Power Station Director, Radiation Division Department of Energy and Environmental Protection 79 Elm Street Hartford, CT 06106-5127

Serial No 14-624 Docket No. 50-336 Attachment 1 Response to Request for Additional Information Regarding License Amendment Request to Adopt TSTF-426, Revision 5, "Revise or Add Actions to Preclude Entry Into LCO 3.0.3 - RITSTF Initiatives 6b and 6c Dominion Nuclear Connecticut, Inc.

Millstone Power Station Unit 2

Serial No 14-624 Docket No. 50-336 Attachment 1, Page 1 of 2 Response to Request for Additional Information Regarding License Amendment Request to Adopt TSTF-426, Revision 5, "Revise or Add Actions to Preclude Entry Into LCO 3.0.3 - RITSTF Initiatives 6b and 6c By letter dated June 30, 2014, Dominion Nuclear Connecticut, Inc. (DNC) submitted a License Amendment Request (LAR) for Millstone Power Station Unit 2 (MPS2). The LAR requests the adoption of approved Technical Specification Task Force (TSTF) traveler TSTF-426, Revision 5, "Revise or Add Actions to Preclude Entry into LCO 3.0.3 - RITSTF Initiatives 6b and 6c," which is an approved change to the Standard Technical Specifications (STS). The proposed changes would replace required actions requiring either a default shutdown or explicit limited condition for operation (LCO) 3.0.3 entry with a required action based on the risk significance for the system's degraded condition which varies from 8 to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

In an email dated December 15, 2014, the Nuclear Regulatory Commission (NRC) transmitted a request for additional information (RAI) related to the submittal. The response to the RAI is as follows:

Background

The Nuclear Regulatory Commission's regulatory requirements related to the content of the Technical Specifications are contained in Title 10 of the Code of FederalRegulations (10 CFR) 10 CFR 50.36. During the staffs review of the change to ensure that the change is in accordance with 10 CFR 50.36 the staff uses NRC guidance in NUREG-0800, Standard Review Plan, Chapter 16, Technical Specifications. According to this guidance the language in the proposed TS changes must be the same or equivalent to that in the current TS unless there is adequate technical or administrative reasoning supporting the change.

RAI 1

Technical Specification (TS) LCO 3.4.3 Action d is being separatedinto two actions d and e however the language as stated in new Action d is not the same as that is in the current TS. The language in New Required Action d.I is "Placethe associatedPORV in manual control within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ... " The current TS language is "... prevent its associatedPORV(s) from opening automatically." Please fully explain how the proposed language is equivalent to the language in the current TS.

DNC Response Upon further review, DNC has decided to retain the original language used in the TS LCO 3.4.3 Action d which is reflected in the revised TS page provided in Attachment 2.

Serial No 14-624 Docket No. 50-336 Attachment 1, Page 2 of 2

RAI 2

Current TS LCO 3.4.4 Action b currently applies when two (2) groups of pressurizer heaters are inoperable. In that action statement with the pressurizerotherwise inoperable the plant must "... be in at least HOT STANDBY ... within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />." If the proposed amendment is granted proposed TS LCO 3.4.4 Required Action c. I would apply when 2 groups of pressurizer heaters are inoperable which requires at least one group of pressurizerheaters to be in OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or "be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and HOT SHUTDOWN within the following 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />." Please explain or provide an adequate basis for why 6 additional hours to be in HOT SHUTDOWN are included in proposed RequiredAction c. I when compared to currentAction b.

DNC Response DNC mistakenly used the twelve hours in proposed Required Action c.1. Twelve hours is the number used in TSTF-426 for completion time of the required action. STS defines completion time as "The Completion Time is the amount of time allowed for completing a Required Action. It is referenced to the time of discovery of a situation (e.g., inoperable equipment or variable not within limits) that requires entering an ACTION Condition unless otherwise specified, providing the unit is in a MODE or specified condition stated in the Applicability of the LCO." However, the twelve hours is inclusive of the previous six hours in the required action. Thus, to have the MPS2 completion time be consistent with TSTF-426 and maintain the format of the MPS TS, the 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> used in the Required Action c.1 to HOT SHUTDOWN should be 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. provides a revision to Insert A for the proposed mark-up of TS 3.4.4 to replace the Insert A previously submitted in DNC letter dated June 30, 2014.

Serial No 14-624 Docket No. 50-336 Attachment 2 Marked-up Technical Specification Pages 3/4 4-3 with Revised Insert A and 3/4 4-4 with Revised Insert A Dominion Nuclear Connecticut, Inc.

Millstone Power Station Unit 2

Serial No 14-624 Docket No. 50-336 Attachment 2, Page 1 of 5 jToy, 1, 149 REACTOR COOLANT SYSTEM RELIEF VALVES LIMITING CONDITION FOR OPERATION 3.4.3 Both power operated relief valves (PORVs) and their associated block valves shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and Insert A to Page 3/4 4-3 ACTION:

. With o: or.both PORVa 4noperablc and capahic oef hng manually e*,ce, Within hour.cither-restore the PORV.(.) to OPERABLE status or :1cm8-1 ific a... :oci atd lot_ FoTl Ttig M ..... HTN. -r t... foI .. ;,,, o,o.

Withl.n PORN' hitopcrable and nel eapablea hfbing amnx ly eyeied,.wiAEX 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> cithc rco-torc0 th40 PORY"to OPRrRABL Q1tu or clooc 4A Acociatd block oak:-And rclno. p ..I'e- t M tnhc block oak:;e rcAtorc $hc POR7 to OPER ABLE oitatuo-18 4ithin t-hc folloing 72 houroF8 orf bcA in HT .A-NPDBY with1in th:4 odd; 6 houra- anfd in HOT SHU4TDOWAN wAit-hinf 414 fc~llowing 6 houro.

e? Wi'th bcthPORW'9 ioporahic and not catpabi: of bchitg nancamllyceyclcd, withiltn hour ithcr restore at L..t o1: POR.1' to -ats PERABLE 1 or lof*1..1 the .._._

Weekvales ad rmov power froem the blocke oaklyo mid be in eA least HOT STANDBYz witlttten ntte: 6dhoutra nod in H94T SHUTDO)WN; ;;ithif the fell:

With win 6-t hors*~ _:..

on:e or: both block. ;'falvni. ^ - .. . .

irnopcralc, l _

within , ..

1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. . .. .I.

restor:a ...

thc I J block .=k . 1 va-cW to OPERABLE.1 ta-lu or*pr.w..- i.ts ms.eeiAtd K.).oR() from o..ning autmaallyRoot:.: at lefts one bWoek oak:v to OEAL n.ia hour .alo. if both block a.rc inoporabi..; ro.to.: ........

towi~thin the nnn.ngin..ra.bl b...k

.. .J...

• .r1as OPFRtBLE t. 7:2 HOthzroKeh in1 .... at ot HOTýF MID........ ;t. the ziqnt T h 6 T a 1. .min THOT-SHUT:DOWN ... wmt.

+/- The block valve(s) may be stroked, as necessary, during plant cooldown to prevent thermal binding. t MILLSTONE - UNIT 2 3/4 4-3 Amendment No. 4-5, 66, 68, 444. 4R4.

44-l-,

Serial No 14-624 Docket No. 50-336 Attachment 2, Page 2 of 5 Insert A to page 3/4 4-3 Inoperable Equipment Required ACTION

a. One or both PORVs, capable of a.1. Within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> either restore the PORV(s) to being manually cycled. OPERABLE status or close the associated block valve(s) with power maintained to the block valve(s)*; otherwise, be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

b. One PORV, not capable of b. 1. Within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> either restore the PORV to being manually cycled. OPERABLE status or close its associated block valve and remove power from the block valve; restore the PORV to OPERABLE status within the following 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

c------

C.

NOTE --------- c.1. Close the associated block valves within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT STANDBY within Not applicable when a second the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN PORV intentionally made within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

inoperable.

AND Two PORVs, not capable of being c.2. Remove power from associated block valves manually cycled. within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

AND c.3. Verify LCO 3.7.1.2, "Auxiliary Feedwater Pumps," is met within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

AND c.4. Restore at least one PORV to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Serial No 14-624 Docket No. 50-336 Attachment 2, Page 3 of 5

d. One block valve. d.1. Prevent its associated PORV from opening automatically within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

AND d.2. Restore the block valve to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

e e.

- NOTE ----------------- e.1. Verify LCO 3.7.1.2, "Auxiliary Feedwater Pumps," is met within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />; or be in at Not applicable when second block least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> valve intentionally made inoperable and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Two block valves. AND e.2. Restore at least one block valve to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Serial No 14-624 Docke.t No. 50-336 Attachment 2 Page 4 of 5 REACTOR COOLANT SYSTEM PRESSURIZER LIMITING CONDITION FOR OPERATION 3.4.4 The pressurizer shall be OPERABLE with:

a. Pressurizer water level

• 70%, and ,4"

b. At least two groups of pressurizer heaters each having a capacity of at least 130 kW.

APPLICABILITY: MODES 1, 2 and 3.

ACTION: l[nser A to page 3/4 4 a- With ON~ i5z@NuO ofSH OPraur liirsFEOEESrcao tLaM w,, Ur9 to OPERABLE.. statu

.l.. wit..i.*712 o: be..i. at l"a4t LHOT STADBY;;.

Withilt the flac 6 homes an.d in HOT SIR'6TDO)WN .. thh" the fellowiiag ;l2houro.

4- With thS P-zzzuriozr chr.w:opal .he ill At loat HOTP STANDBY withA the reatoer trip brealoaro open within 64hours And in HOT SHU4TDOWN withi h;ta f4liawing 6hm-.-e SURVEILLANCE REQUIREMENTS 4.4.4.1 The pressurizer water level shall be determined to be within its limits at least once per 4,-

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

4.4.4.2 Verify at least two groups of pressurizer heaters each have a capacity of at least 130 kW at least once per 92 days.

MILLSTONE - UNIT 2 3/4 4-4 Amendment No. 66, 4, 9-7;, 440, 2-4-9, 2C4, -296

Serial No 14-624 Docket No. 50-336 Attachment 2, Page 5 of 5 Insert A to page 3/4 4-4 Inoperable Equipment Required ACTION

a. Pressurizer water level not a.1. Be in at least HOT STANDBY with the within limit. reactor trip breakers open within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

b. One group of pressurizer b.1. Restore the inoperable group of pressurizer heaters, heaters to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTDOWN within the following 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

c. c. 1. Restore at least one group of pressurizer

- NOTE ------------------ heaters to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Not applicable when second group or be in at least HOT STANDBY within the of required pressurizer heaters next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and HOT SHUTDOWN within intentionally made inoperable, the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Two groups of pressurizer heaters.