2CAN069206, Requests Deferral of 911220 Application for Amend to License NPF-6,changing TS 3.4.2 Re Mode 4 Overpressure Protection Until NRC Approves Low Power Overprotection Spec
| ML20101L971 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 06/30/1992 |
| From: | James Fisicaro ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 2CAN069206, 2CAN69206, NUDOCS 9207080007 | |
| Download: ML20101L971 (2) | |
Text
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im sm sma June'30r 1992 2CAN069206-
-U.' S. Nuclear Regulatory Commission Document Control Desk Mail Station P1-137 Washington, DC. 20555
. Subj ect: ' Arkansas Nuclear One - Unit 2
~ Docket No. 50-368
+
License No. NPF-6 Deferral' of Proposed Technical Specifications Change Request on.ANO-2 Mode 4 Overpressure Protection
/ Gentlemen In. "0CAN129105, Forwards Response to NRC 910819 Request for Addl Info Re 910627 Application for Amends to Licenses DPR-51 & NPF-6, Changing Tech Specs to Incorporate [[generic letter" contains a listed "[" character as part of the property label and has therefore been classified as invalid. Re 3.0.4 Exceptions|letter dated December 20, 1991]]-(OCAN129103), Entergy Operations identified the need to modify Arkansas Nucleer One, Unit 2(ANO-2)
Technical' Specification 3.4.2.
This specification currently references
-aligning the shutdown cooling system to ensure. adequate RCS overpressure
_protec_ tion in-Modes 4 and 5 when no code safety relief valves are considered operable. However, as noted. -th'e shutdown cooling system does not have sufficient relief capability to prevent an overpressure event
-under anticipated transient conditions. The proposed revision to Specification 3.4.2 would involve referencing the ANO-2 Low Temperature -
- Overpressure Protection (LTOP) system instead of the shutdown cooling
. system 'and would be limited to Mode 4. applicability sincu the ANO-2 LTOP valves will be enabled in Modes 5 and 6, if adequate alternate venting is not provided.
L
_ The LTOP valves do not currently have a Technical Specificatlon E
-requirement;.however, in accordance with Generic Letter 90-06 proposed
. Technical Specifications-for the LTOP valves were submitted in letter dated June 18. 1991 (2CAN069107)-
The proposed specifica*lon will
_ require the L'IOP valves to be in service in Modes 5-and 6 (corresponding l-to-aLcold--leg temperature of 200 F or less) if the RCS is not
~
sufficiently vented...Upon NRC review and approval of the proposed LTOP
In addition, upon NRCl approval of_the LTOP L
. specification change, the needed revision to Specification 3.4.2 to appropriately. reference the LTOP system and to coordinate actions with the_LTOP specification change can be performed.
W i Il _U a_.'.)
49207080007 920630 ADOCK0500g8-pf DR-
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ju):S.sNRCL
- June 30, 1992-
.Page 2 a
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'Therefore, Entergyf0perations will defer proposal of the Techt.ical.
f
.Specificatior. change to Section 3.4.2 until: the proposed LTOP
- specification is approved _by.the NRC.
As discussed in the December 20, 1991' letter, administrative controls have been established to ensure
-adequate overpressure protection in Mode 4 with inoperable pressurizer.
code safety valves.- This deferral has been discussed with Tom Alexion of NRR Projects.-
- Please contact. me if you require any additional information on this matter.
Very truly yours,-
% <,MW James
. Fisicaro Director, Licensing JJF/SAB/mmg.
cc:
Mr. Robert Martin U. S. Nuclear Regulatory Commission Region IV--
'611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident' Inspector Arkansas Nuclear One1-ANO-1 & 2 Number 1, Nuclear Plant Road-Russellville',-AR 72801 Mr.1 Thomas W.-Alexion NRR' Project Manager, Region IV/ ANO-1 U. S. Nuclear Regulatory Commission.
NRR Mail Stop 13-H-3 One White Flint North 11555'Rockv111e Pike Rockville, Maryland 20852 Ms. Sheri Peterson-NRR Project Manager, Region IV/ANO-2 U. S._ Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White-Flint North 11555 Rockville Pike Rockville, Maryland 20852
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