RNP-RA/14-0010, Response to NRC Request for Additional Information Regarding License Amendment Request to Modify Technical Specification 3.8.1 Proposed Changes to Diesel Generator Testing Requirements: Difference between revisions

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{{#Wiki_filter:W R. GIDEON DUKE ENERGYe H. B. Robinson Steam Electric PlantUnit 2 Site Vice President Duke Energy 3581 West Entrance Road Hartsville, SC 29550 10 CFR 50.36 Serial: RNP-RA/14-0010.
{{#Wiki_filter:DUKE ENERGYe W R. GIDEON H. B. Robinson Steam Electric Plant Unit 2 Site Vice President Duke Energy 3581 West Entrance Road Hartsville, SC 29550 10 CFR 50.36 Serial: RNP-RA/14-0010.
JAN 302D14 ATTN: Document Control Desk United States Nuclear Regulatory Commission Washington, DC 20555-0001 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261/RENEWED LICENSE NO. DPR-23 RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO MODIFY TECHNICAL SPECIFICATION 3.
JAN 302D14 ATTN: Document Control Desk United States Nuclear Regulatory Commission Washington, DC 20555-0001 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261/RENEWED LICENSE NO. DPR-23 RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO MODIFY TECHNICAL SPECIFICATION 3.


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==References:==
==References:==
: 1. Letter from Sharon A. Wheeler-Peavyhouse (Duke Energy Progress, Inc.) to the, U.S.
: 1. Letter from Sharon A. Wheeler-Peavyhouse (Duke Energy Progress, Inc.) to the, U.S.
Nuclear Regulatory Commission (Serial: RA-1 3-0051), License Amendment Request to Modify Technical Specification 3.8.1 Proposed Changes to Diesel GeneratorTesting Requirements, dated September 10, 2013, ADAMS Accession NUmber ML13261A289
Nuclear Regulatory Commission (Serial: RA-1 3-0051), License Amendment Request to Modify Technical Specification 3.8.1 Proposed Changes to Diesel Generator Testing Requirements, dated September 10, 2013, ADAMS Accession NUmber ML13261A289
: 2. E-mail from Siva Lingam (USNRC) to Richard Hightower (Duke Energy Progress, Inc.),
: 2. E-mail from Siva Lingam (USNRC) to Richard Hightower (Duke Energy Progress, Inc.),
H.B. Robinson, Unit 2 - RAIs for LAR Associated with Modification to TS 3.8.1 Regarding Diesel GeneratorTesting Requirements (TAC No. MF2717), dated January 8, 2014, ADAMS Accession Number ML14016A278 Ladies and Gentlemen:
H. B. Robinson, Unit 2 - RAIs for LAR Associated with Modification to TS 3.8.1 Regarding Diesel Generator Testing Requirements (TAC No. MF2717), dated January 8, 2014, ADAMS Accession Number ML14016A278 Ladies and Gentlemen:
By letter dated September 10, 2013 (Reference 1), Duke Energy Progress, Inc., formerly known as Carolina Power & Light Company, submitted a license amendment request to modify Technical Specification 3.8.1 .B.3.2.2.
By {{letter dated|date=September 10, 2013|text=letter dated September 10, 2013}} (Reference 1), Duke Energy Progress, Inc., formerly known as Carolina Power & Light Company, submitted a license amendment request to modify Technical Specification 3.8.1.B.3.2.2.
On January 8, 2014, the NRC provided a request for additional information (RAI) (Reference 2),
On January 8, 2014, the NRC provided a request for additional information (RAI) (Reference 2),
concerning the referenced license amendment request. Duke .Energy Progress's response to the NRC's RAI is enclosed.                      .      .
concerning the referenced license amendment request. Duke.Energy Progress's response to the NRC's RAI is enclosed.
There are no regulatory commitments made in this submittal. If you have aný questions':'.:
There are no regulatory commitments made in this submittal. If you have aný questions':'.:
regarding this submittal, please contact Mr. R. Hightower at (843) 857-1329.
regarding this submittal, please contact Mr. R. Hightower at (843) 857-1329.
                                                                                                        ýtDl
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United States Nuclear Regulatory Commission Serial: RNP-RA/14-0010 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct.
United States Nuclear Regulatory Commission Serial: RNP-RA/14-0010 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct.
Executed On:
Executed On:
Sincerely, W. R. Gideon Site Vice President WRG/jmw Enclosure cc:     Mr. V. M. McCree, NRC, Region II Mr. Siva P. Lingam, NRC Project Manager, NRR NRC Resident Inspector, HBRSEP, Unit No. 2
Sincerely, W. R. Gideon Site Vice President WRG/jmw Enclosure cc:
Mr. V. M. McCree, NRC, Region II Mr. Siva P. Lingam, NRC Project Manager, NRR NRC Resident Inspector, HBRSEP, Unit No. 2


U. S. Nuclear Regulatory Commission Enclosure to Serial RNP-RN14-0010 7 Pages (including cover sheet)
U. S. Nuclear Regulatory Commission Enclosure to Serial RNP-RN14-0010 7 Pages (including cover sheet)
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==8.1 PROPOSED CHANGE==
==8.1 PROPOSED CHANGE==
S TO DIESEL GENERATOR TESTING REQUIREMENTS (TAC NO. MF2737) .
S TO DIESEL GENERATOR TESTING REQUIREMENTS (TAC NO. MF2737)  


U. S. Nuclear Regulatory Commission Enclosure to Serial RNP-RAI14-0010 Page 2 of 7 Response to Request for Additional Information RAI:
U. S. Nuclear Regulatory Commission Enclosure to Serial RNP-RAI14-0010 Page 2 of 7 Response to Request for Additional Information RAI:
Line 51: Line 52:
Response to RAI:
Response to RAI:
The markup and retyped Technical Specifications (TS) pages as well as the markup TS Bases pages have been revised as requested to prevent the TS Bases from becoming part of the TS. The revised pages are provided by means of this Enclosure and supersedes those pages conveyed via the original submittal. Please replace the pages of the original submittal as indicated below.
The markup and retyped Technical Specifications (TS) pages as well as the markup TS Bases pages have been revised as requested to prevent the TS Bases from becoming part of the TS. The revised pages are provided by means of this Enclosure and supersedes those pages conveyed via the original submittal. Please replace the pages of the original submittal as indicated below.
L                                                                               I Original Page(s)                         Revised Page(s)
L Original Page(s)
TS Markup: 3.8-2                         TS Markup: 3.8-2 & 3.8-3 TS Retyped: 3.8-2                       TS Retyped: 3.8-2 & 3.8-3 TS Bases MarkuD: B 3.8-9                 TS Bases MarkuD: B 3.8-9
Revised Page(s)
TS Markup: 3.8-2 TS Markup: 3.8-2 & 3.8-3 TS Retyped: 3.8-2 TS Retyped: 3.8-2 & 3.8-3 I
TS Bases MarkuD: B 3.8-9 TS Bases MarkuD: B 3.8-9


AC Sources-Operating 3.8.1 ACTIONS (continued)
AC Sources-Operating 3.8.1 ACTIONS (continued)
CONDITION     I         REQUIRED ACTION             I COMPLETION TIME B. One DG inoperable. B. 1       Perform SR 3.8.1.1 for     1 hour the offsite circuit.
CONDITION I
AND Once per 12 hours thereafter AND B.2        Declare required         4 hours from feature(s) supported by   discovery of the inoperable DG           Condition B
REQUIRED ACTION I COMPLETION TIME B.
--------- NOTE----------                         inoperable when its        concurrent with Not required to be performed                     required redundant        inoperability of when the cause of the inoperable                 feature(s) is inoperable. redundant required feature(s)
One DG inoperable.
DG is pre-planned, preventive AND maintenance and testing. At any point during the pre-planned           B.3.1      Perform SR 3.8.1.2 for    24 hours maintenance or testing, if any                   OPERABLE DG new failure requiring corrective           OR maintenance is detected, Required Action B.3.2.2 must be       B.3.2.1    Determine OPERABLE        24 hours entered for the OPERABLE DG.                     DG is not inoperable due Ifthe 96-hour Completion Time                   to common cause failure.
B. 1 AND B.2 Perform SR 3.8.1.1 for the offsite circuit.
has expired at the point of AND discovery of the failure requiring corrective maintenance, then at       B.3.2.2    Perfo rm SR 3.8.1.2 for   96 hours the time of discovery Required                    OPEFRABLE DG.
Declare required feature(s) supported by the inoperable DG inoperable when its required redundant feature(s) is inoperable.
Action B.3.1 must be entered for the OPERABLE DG.                       AND (continued)
--------- NOTE----------
HBRSEP Unit No. 2                   3.8-2                         Amendment No.
Not required to be performed when the cause of the inoperable DG is pre-planned, preventive maintenance and testing. At any point during the pre-planned maintenance or testing, if any new failure requiring corrective maintenance is detected, Required Action B.3.2.2 must be entered for the OPERABLE DG.
If the 96-hour Completion Time has expired at the point of discovery of the failure requiring corrective maintenance, then at the time of discovery Required Action B.3.1 must be entered for the OPERABLE DG.
AND B.3.1 Perform SR 3.8.1.2 for OPERABLE DG OR B.3.2.1 Determine OPERABLE DG is not inoperable due to common cause failure.
1 hour AND Once per 12 hours thereafter 4 hours from discovery of Condition B concurrent with inoperability of redundant required feature(s) 24 hours 24 hours 96 hours (continued)
AND B.3.2.2 Perfo OPEF rm SR 3.8.1.2 RABLE DG.
for AND HBRSEP Unit No. 2 3.8-2 Amendment No.
AC Sources-Operating 3.8.1 ACTIONS (continued)
AC Sources-Operating 3.8.1 ACTIONS (continued)
CONDITION                     REQUIRED ACTION           COMPLETION TIME B. (continued)             B.4         Restore DG to           7 days OPERABLE status.
CONDITION REQUIRED ACTION COMPLETION TIME B.
AND 8 days from discovery of failure to meet LCO C. Required.Action and     C.1         Be in MODE 3.           6 hours associated Completion Time of Condition A or B AND not met.
(continued)
C.2         Be in MODE 5.           36 hours D. Two or more AC sources       ------    NOTE   ----------
B.4 Restore DG to 7 days OPERABLE status.
inoperable.             Entry into this Required Action may be delayed for no greater than 2 hours during performance of Required Action B.3.1 and Required Action B.3.2.2.
AND 8 days from discovery of failure to meet LCO C.
D.1         Enter LCO 3.0.3         Immediately HBRSEP Unit No. 2                         3.8-3                     Amendment No. 44&
Required.Action and C.1 Be in MODE 3.
6 hours associated Completion Time of Condition A or B AND not met.
C.2 Be in MODE 5.
36 hours D.
Two or more AC sources NOTE inoperable.
Entry into this Required Action may be delayed for no greater than 2 hours during performance of Required Action B.3.1 and Required Action B.3.2.2.
D.1 Enter LCO 3.0.3 Immediately HBRSEP Unit No. 2 3.8-3 Amendment No. 44&


AC Sources-Operating 3.8.1 ACTIONS (continued)
AC Sources-Operating 3.8.1 ACTIONS (continued)
CONDITION                 REQUIRED ACTION                   COMPLETION TIME B. One DG inoperable. B.1               Perform SR 3.8.1.1 for     1 hour the offsite circuit.
CONDITION REQUIRED ACTION COMPLETION TIME B.
AND Once per 12 hours thereafter AND B.2               Declare required         4 hours from feature(s) supported by   .discovery of the inoperable DG           Condition B inoperable when its       concurrent with required redundant         inoperability of feature(s) is inoperable. redundant required feature(s)
One DG inoperable.
AND B.3.1             Perform SR 3.8.1.2 for     24 hours OPERABLE DG OR B.3.2.1           Determine OPERABLE       24 hours DG is not inoperable due to common cause failure.
B.1 Perform SR 3.8.1.1 for the offsite circuit.
AND
AND B.2 Declare required feature(s) supported by the inoperable DG inoperable when its required redundant feature(s) is inoperable.
                        --- ---------------- NOTE ------------------
AND B.3.1 Perform SR 3.8.1.2 for OPERABLE DG OR B.3.2.1 Determine OPERABLE DG is not inoperable due to common cause failure.
Not required to be performed when the cause of the inoperable DG is pre-planned, preventive maintenance and testing. At any point during the pre-planned maintenance or testing, if any new failure requiring corrective maintenance is detected, Required Action B.3.2.2 must be entered for the OPERABLE DG. If the 96-hour Completion Time has expired at the point of discovery of the failure requiring corrective maintenance,                     (continued)
AND NOTE ------------------
HBRSEP Unit No. 2                       3.8-2                               Amendment No.
Not required to be performed when the cause of the inoperable DG is pre-planned, preventive maintenance and testing. At any point during the pre-planned maintenance or testing, if any new failure requiring corrective maintenance is detected, Required Action B.3.2.2 must be entered for the OPERABLE DG. If the 96-hour Completion Time has expired at the point of discovery of the failure requiring corrective maintenance, 1 hour AND Once per 12 hours thereafter 4 hours from
.discovery of Condition B concurrent with inoperability of redundant required feature(s) 24 hours 24 hours (continued)
HBRSEP Unit No. 2 3.8-2 Amendment No.


AC Sources-Operating 3.8.1 ACTIONS (continued)
AC Sources-Operating 3.8.1 ACTIONS (continued)
CONDITION                   REQUIRED ACTION             COMPLETION TIME B. (continued)               then at the time of discovery Required Action B.3.1 must be entered for the OPERABLE DG.
CONDITION REQUIRED ACTION COMPLETION TIME B.
(continued) then at the time of discovery Required Action B.3.1 must be entered for the OPERABLE DG.
96 hours B.3.2.2 Perform SR 3.8.1.2 for OPERABLE DG.
96 hours B.3.2.2 Perform SR 3.8.1.2 for OPERABLE DG.
AND 7 days B.4       Restore DG to OPERABLE status.         AND 8 days from discovery of failure to meet LCO C. Required Action and       C.1       Be in MODE 3.           6 hours associated Completion Time of Condition A or B   AND not met.
AND 7 days B.4 Restore DG to OPERABLE status.
C.2       Be in MODE 5.           36 hours D. Two or more AC sources   ---------- NOTE           ----------
AND 8 days from discovery of failure to meet LCO C.
inoperable.               Entry into this Required Action may be delayed for no greater than 2 hours during performance of Required Action B.3.1 and Required Action B.3.2.2.
Required Action and C.1 Be in MODE 3.
D.1       Enter LCO 3.0.3         Immediately HBRSEP Unit No. 2                         3.8-3                             Amendment No.
6 hours associated Completion Time of Condition A or B AND not met.
C.2 Be in MODE 5.
36 hours D.
Two or more AC sources NOTE inoperable.
Entry into this Required Action may be delayed for no greater than 2 hours during performance of Required Action B.3.1 and Required Action B.3.2.2.
D.1 Enter LCO 3.0.3 Immediately HBRSEP Unit No. 2 3.8-3 Amendment No.


AC Sources - Operating B 3.8.1 BASES ACTIONS           B.3.1. B.3.2.1. and B.3.2.2 (continued)
r t
Required Action B.3.2.2 is       satisfied. If the cause of the initial inoperable DG cannot be confirmed not modified by a NOTE that           to exist on the remaining DG(s), performance of SR 3.8.1.2 suffices to removes the requirement to         provide assurance of continued OPERABILITY of that DG.
t t
verify the OPERABILITY of t:he OPERABLE DG within           If it is verified within 24 hours that the OPERABLE DG is not inoperable 96 hours when the cause of       due to common cause failure, SR 3.8.1.2 need not be performed within t:he initial inoperability is pre- 24 hours. However, it is still necessary to verify the OPERABILITY of the
t AC Sources - Operating B 3.8.1 BASES ACTIONS B.3.1. B.3.2.1. and B.3.2.2 (continued)
)lanned maintenance and           OPERABLE DG within 96 hours. Testing: the OPERABLE DG more than plang In testing. Inethis thintenane, case, nono    once during the 7 day Completion Time is not required.
Required Action B.3.2.2 is satisfied. If the cause of the initial inoperable DG cannot be confirmed not modified by a NOTE that to exist on the remaining DG(s), performance of SR 3.8.1.2 suffices to emoves the requirement to provide assurance of continued OPERABILITY of that DG.
t actual failure has occurred       In/e event the inoperable DG is restored to OPERABLE status prior to i.e., a potential for a             mpleting either B.3.1 or B.3.2, the plant corrective action program will common mode failure has           continue to evaluate the common cause possibility. This continued not been identified) and the     evaluation, however, is no longer under the 24 hour constraint imposed ikelihood of the other DG         while in Condition B.
verify the OPERABILITY of
having an undetected failure during this period is very low. According to Generic Letter 84-15 (Ref. 6), 24 hours is reasonable driheiNOTEso                                                                                               to periovids vconfirm             that the OPERABLE DG(s) is not affected by the same problem as The NOTE also provides           the inoperable DG.
:he OPERABLE DG within If it is verified within 24 hours that the OPERABLE DG is not inoperable 96 hours when the cause of due to common cause failure, SR 3.8.1.2 need not be performed within
Jirection for the discovery of any new failure requiring corrective maintenance at         B.4 any point during the pre-planned maintenance or           Operation may continue in Condition B for a period that should not exceed testing of the DG being           7 days.
:he initial inoperability is pre-24 hours. However, it is still necessary to verify the OPERABILITY of the
)lanned maintenance and OPERABLE DG within 96 hours. Testing: the OPERABLE DG more than plang Ine thintenane, no once during the 7 day Completion Time is not required.
testing. In this case, no actual failure has occurred In/e event the inoperable DG is restored to OPERABLE status prior to i.e., a potential for a mpleting either B.3.1 or B.3.2, the plant corrective action program will common mode failure has continue to evaluate the common cause possibility. This continued not been identified) and the evaluation, however, is no longer under the 24 hour constraint imposed ikelihood of the other DG while in Condition B.
having an undetected failure during this period is very low.
According to Generic Letter 84-15 (Ref. 6), 24 hours is reasonable to driheiNOTEso periovids vconfirm that the OPERABLE DG(s) is not affected by the same problem as The NOTE also provides the inoperable DG.
Jirection for the discovery of any new failure requiring corrective maintenance at B.4 any point during the pre-planned maintenance or Operation may continue in Condition B for a period that should not exceed esting of the DG being 7 days.
serviced or tested.
serviced or tested.
In Condition B, the remaining OPERABLE DG and offsite circuit are adequate to supply electrical power to the onsite Distribution System. The 7 day Completion Time'takes into account the capacity and capability of the remainingAC sources, a reasonable time for repairs, and the low probability of a DBA occurring during this period.
In Condition B, the remaining OPERABLE DG and offsite circuit are adequate to supply electrical power to the onsite Distribution System. The 7 day Completion Time'takes into account the capacity and capability of the remainingAC sources, a reasonable time for repairs, and the low probability of a DBA occurring during this period.
The second Completion Time for Required Action B.4 establishes a limit on the maximum time allowed for any combination of required AC power sources to be inoperable during any single contiguous occurrence of failing to meet he LCO. If Condition B is entered while, for instance, an offsite circuit is inoperable and that circuit is subsequently restored OPERABLE, the LCO may already have been not met for up to 24 hours. This could lead to a total (continued)
The second Completion Time for Required Action B.4 establishes a limit on the maximum time allowed for any combination of required AC power sources to be inoperable during any single contiguous occurrence of failing to meet he LCO. If Condition B is entered while, for instance, an offsite circuit is inoperable and that circuit is subsequently restored OPERABLE, the LCO may already have been not met for up to 24 hours. This could lead to a total (continued)
HBRSEP Unit No. 2                             B 3.8-9                             Revision No.'0"}}
HBRSEP Unit No. 2 B 3.8-9 Revision No.'0"}}

Latest revision as of 23:24, 10 January 2025

Response to NRC Request for Additional Information Regarding License Amendment Request to Modify Technical Specification 3.8.1 Proposed Changes to Diesel Generator Testing Requirements
ML14037A105
Person / Time
Site: Robinson Duke Energy icon.png
Issue date: 01/30/2014
From: William Gideon
Duke Energy Carolinas, Duke Energy Corp
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RNP-RA/14-0010, TAC NO. MF2737
Download: ML14037A105 (9)
v • d • e


Text

DUKE ENERGYe W R. GIDEON H. B. Robinson Steam Electric Plant Unit 2 Site Vice President Duke Energy 3581 West Entrance Road Hartsville, SC 29550 10 CFR 50.36 Serial: RNP-RA/14-0010.

JAN 302D14 ATTN: Document Control Desk United States Nuclear Regulatory Commission Washington, DC 20555-0001 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261/RENEWED LICENSE NO. DPR-23 RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO MODIFY TECHNICAL SPECIFICATION 3.

8.1 PROPOSED CHANGE

S TO DIESEL GENERATOR TESTING REQUIREMENTS (TAC NO. MF2737)

References:

1. Letter from Sharon A. Wheeler-Peavyhouse (Duke Energy Progress, Inc.) to the, U.S.

Nuclear Regulatory Commission (Serial: RA-1 3-0051), License Amendment Request to Modify Technical Specification 3.8.1 Proposed Changes to Diesel Generator Testing Requirements, dated September 10, 2013, ADAMS Accession NUmber ML13261A289

2. E-mail from Siva Lingam (USNRC) to Richard Hightower (Duke Energy Progress, Inc.),

H. B. Robinson, Unit 2 - RAIs for LAR Associated with Modification to TS 3.8.1 Regarding Diesel Generator Testing Requirements (TAC No. MF2717), dated January 8, 2014, ADAMS Accession Number ML14016A278 Ladies and Gentlemen:

By letter dated September 10, 2013 (Reference 1), Duke Energy Progress, Inc., formerly known as Carolina Power & Light Company, submitted a license amendment request to modify Technical Specification 3.8.1.B.3.2.2.

On January 8, 2014, the NRC provided a request for additional information (RAI) (Reference 2),

concerning the referenced license amendment request. Duke.Energy Progress's response to the NRC's RAI is enclosed.

There are no regulatory commitments made in this submittal. If you have aný questions':'.:

regarding this submittal, please contact Mr. R. Hightower at (843) 857-1329.

ýtDl

ý.rK

United States Nuclear Regulatory Commission Serial: RNP-RA/14-0010 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct.

Executed On:

Sincerely, W. R. Gideon Site Vice President WRG/jmw Enclosure cc:

Mr. V. M. McCree, NRC, Region II Mr. Siva P. Lingam, NRC Project Manager, NRR NRC Resident Inspector, HBRSEP, Unit No. 2

U. S. Nuclear Regulatory Commission Enclosure to Serial RNP-RN14-0010 7 Pages (including cover sheet)

RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST TO MODIFY TECHNICAL SPECIFICATION 3.

8.1 PROPOSED CHANGE

S TO DIESEL GENERATOR TESTING REQUIREMENTS (TAC NO. MF2737)

U. S. Nuclear Regulatory Commission Enclosure to Serial RNP-RAI14-0010 Page 2 of 7 Response to Request for Additional Information RAI:

Provide the appropriate TS Required Action(s), Note(s) or Completion Time(s) in accordance with this regulation [10 CFR 50.36(a)(1)] to avoid the TS Bases from becoming part of the TS, within 30 days of this e-mail.

Response to RAI:

The markup and retyped Technical Specifications (TS) pages as well as the markup TS Bases pages have been revised as requested to prevent the TS Bases from becoming part of the TS. The revised pages are provided by means of this Enclosure and supersedes those pages conveyed via the original submittal. Please replace the pages of the original submittal as indicated below.

L Original Page(s)

Revised Page(s)

TS Markup: 3.8-2 TS Markup: 3.8-2 & 3.8-3 TS Retyped: 3.8-2 TS Retyped: 3.8-2 & 3.8-3 I

TS Bases MarkuD: B 3.8-9 TS Bases MarkuD: B 3.8-9

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION I

REQUIRED ACTION I COMPLETION TIME B.

One DG inoperable.

B. 1 AND B.2 Perform SR 3.8.1.1 for the offsite circuit.

Declare required feature(s) supported by the inoperable DG inoperable when its required redundant feature(s) is inoperable.

NOTE----------

Not required to be performed when the cause of the inoperable DG is pre-planned, preventive maintenance and testing. At any point during the pre-planned maintenance or testing, if any new failure requiring corrective maintenance is detected, Required Action B.3.2.2 must be entered for the OPERABLE DG.

If the 96-hour Completion Time has expired at the point of discovery of the failure requiring corrective maintenance, then at the time of discovery Required Action B.3.1 must be entered for the OPERABLE DG.

AND B.3.1 Perform SR 3.8.1.2 for OPERABLE DG OR B.3.2.1 Determine OPERABLE DG is not inoperable due to common cause failure.

1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from discovery of Condition B concurrent with inoperability of redundant required feature(s) 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 24 hours 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> (continued)

AND B.3.2.2 Perfo OPEF rm SR 3.8.1.2 RABLE DG.

for AND HBRSEP Unit No. 2 3.8-2 Amendment No.

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued)

B.4 Restore DG to 7 days OPERABLE status.

AND 8 days from discovery of failure to meet LCO C.

Required.Action and C.1 Be in MODE 3.

6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time of Condition A or B AND not met.

C.2 Be in MODE 5.

36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> D.

Two or more AC sources NOTE inoperable.

Entry into this Required Action may be delayed for no greater than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> during performance of Required Action B.3.1 and Required Action B.3.2.2.

D.1 Enter LCO 3.0.3 Immediately HBRSEP Unit No. 2 3.8-3 Amendment No. 44&

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B.

One DG inoperable.

B.1 Perform SR 3.8.1.1 for the offsite circuit.

AND B.2 Declare required feature(s) supported by the inoperable DG inoperable when its required redundant feature(s) is inoperable.

AND B.3.1 Perform SR 3.8.1.2 for OPERABLE DG OR B.3.2.1 Determine OPERABLE DG is not inoperable due to common cause failure.

AND NOTE ------------------

Not required to be performed when the cause of the inoperable DG is pre-planned, preventive maintenance and testing. At any point during the pre-planned maintenance or testing, if any new failure requiring corrective maintenance is detected, Required Action B.3.2.2 must be entered for the OPERABLE DG. If the 96-hour Completion Time has expired at the point of discovery of the failure requiring corrective maintenance, 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> AND Once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from

.discovery of Condition B concurrent with inoperability of redundant required feature(s) 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 24 hours (continued)

HBRSEP Unit No. 2 3.8-2 Amendment No.

AC Sources-Operating 3.8.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued) then at the time of discovery Required Action B.3.1 must be entered for the OPERABLE DG.

96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> B.3.2.2 Perform SR 3.8.1.2 for OPERABLE DG.

AND 7 days B.4 Restore DG to OPERABLE status.

AND 8 days from discovery of failure to meet LCO C.

Required Action and C.1 Be in MODE 3.

6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time of Condition A or B AND not met.

C.2 Be in MODE 5.

36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> D.

Two or more AC sources NOTE inoperable.

Entry into this Required Action may be delayed for no greater than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> during performance of Required Action B.3.1 and Required Action B.3.2.2.

D.1 Enter LCO 3.0.3 Immediately HBRSEP Unit No. 2 3.8-3 Amendment No.

r t

t t

t AC Sources - Operating B 3.8.1 BASES ACTIONS B.3.1. B.3.2.1. and B.3.2.2 (continued)

Required Action B.3.2.2 is satisfied. If the cause of the initial inoperable DG cannot be confirmed not modified by a NOTE that to exist on the remaining DG(s), performance of SR 3.8.1.2 suffices to emoves the requirement to provide assurance of continued OPERABILITY of that DG.

verify the OPERABILITY of

he OPERABLE DG within If it is verified within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> that the OPERABLE DG is not inoperable 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> when the cause of due to common cause failure, SR 3.8.1.2 need not be performed within
he initial inoperability is pre-24 hours. However, it is still necessary to verify the OPERABILITY of the

)lanned maintenance and OPERABLE DG within 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br />. Testing: the OPERABLE DG more than plang Ine thintenane, no once during the 7 day Completion Time is not required.

testing. In this case, no actual failure has occurred In/e event the inoperable DG is restored to OPERABLE status prior to i.e., a potential for a mpleting either B.3.1 or B.3.2, the plant corrective action program will common mode failure has continue to evaluate the common cause possibility. This continued not been identified) and the evaluation, however, is no longer under the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> constraint imposed ikelihood of the other DG while in Condition B.

having an undetected failure during this period is very low.

According to Generic Letter 84-15 (Ref. 6), 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> is reasonable to driheiNOTEso periovids vconfirm that the OPERABLE DG(s) is not affected by the same problem as The NOTE also provides the inoperable DG.

Jirection for the discovery of any new failure requiring corrective maintenance at B.4 any point during the pre-planned maintenance or Operation may continue in Condition B for a period that should not exceed esting of the DG being 7 days.

serviced or tested.

In Condition B, the remaining OPERABLE DG and offsite circuit are adequate to supply electrical power to the onsite Distribution System. The 7 day Completion Time'takes into account the capacity and capability of the remainingAC sources, a reasonable time for repairs, and the low probability of a DBA occurring during this period.

The second Completion Time for Required Action B.4 establishes a limit on the maximum time allowed for any combination of required AC power sources to be inoperable during any single contiguous occurrence of failing to meet he LCO. If Condition B is entered while, for instance, an offsite circuit is inoperable and that circuit is subsequently restored OPERABLE, the LCO may already have been not met for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This could lead to a total (continued)

HBRSEP Unit No. 2 B 3.8-9 Revision No.'0"

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