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{{#Wiki_filter:Robinson / NRC Pre-submittal Meeting:
{{#Wiki_filter:Robinson / NRC Pre-submittal Meeting:
LAR to Remove 4.160 kV bus 2 from Surveillance Requirement 3.8.1.16 ( ~ DUKE
LAR to Remove 4.160 kV bus 2 from Surveillance Requirement 3.8.1.16 ( ~ DUKE March 30, 2022 ~ ENERGY Duke Energy Attendees
                                                                    ~ ENERGY March 30, 2022


Duke Energy Attendees Lee Grzeck (Manager, Nuclear Fleet Licensing)
Lee Grzeck (Manager, Nuclear Fleet Licensing)
Joshua Duc (Nuclear Fleet Licensing)
Joshua Duc (Nuclear Fleet Licensing)
Keith Beatty (RNP Engineering)
Keith Beatty (RNP Engineering)
Alan Helms (RNP Engineering)
Alan Helms (RNP Engineering)
David Zybak (RNP Operations) 2 2
David Zybak (RNP Operations)


Agenda Current and Proposed Technical Specification (TS) / Surveillance Requirement (SR)
2 2
Agenda
 
Current and Proposed Technical Specification (TS) / Surveillance Requirement (SR)
System Design and Operation Reason for the Proposed Change
System Design and Operation Reason for the Proposed Change


===Background===
===Background===
Justification Schedule 3
Justification Schedule
 
3 Current and Proposed TS / SR
 
3.8. 1 AC Sour c es - Ope rating
 
LCO 3.8.1 The fo llo w ing AC electrical sou rces shall b e OPERAB LE :
 
a. Tw o q u a lified c irc u its be tween the o ffsite tra n smission ne twor k and the onsi te em erg en c y AC Electrica l Po w er Distribut ion Sy stem ; and
 
b. Tw o d iesel gene rators (DGs) capa b le of su pplying the ons ite emergenc y po w er distrib u tion su bs y stem (s).
 
A P PLICAB ILI T Y : MOD ES 1, 2, 3, an d 4.
 
SR 3.8. 1.16 - -- ---- ---- ------ -------- NOT E----- --- ------- ---- ----- -- - ------ ---
: 1. Th is Sur veillan ce shall not b e perform ed in MO DE 1or2. ~
 
2. SR 3.8.1. 16 is no t req u ired to be me t if 1. 160 IN b 1,Js 2 OAS 480 V Emergenc y Bus 1 po w er supply is
_ __ _ from a s tart up transformer. ~ low er case "b" I
 
V erify a u tomatic transfer ca p ab ility of the 1.160 It'/ b1,Js In acco rdance w ith 2 OAS 11:le 4 8 0 V Eme rgenc y bus 1 loads from the U n it the Sur veillance au x iliar y transforme r to a sta rt u p tran sformer. Freq u en cy C on trol Progra m 4
4 System Design and Operation
 
TS 3.8.1 Bases Design of AC electrical power system ensures power to Engineered Safety Feature (ESF) systems Offsite circuit: equipment required to transmit power from offsite transmission network to ESF buses
 
Normal 100% power lineup from Startup Transformers (SUT), Unit Auxiliary Transformer (UAT):
115 kV SUT 4.160 kV bus 6 480 V Emergency bus 1 (ESF bus E1) 230 kV SUT 4.160 kV bus 9 480 V Emergency bus 2 (ESF bus E2)
UAT 4.160 kV bus 2
 
SR 3.8.1.16 automatic transfer from UAT to SUT Breakers 52/7 and 52/20 open; breakers 52/12 and 52/19 close
 
5 5
W-E ST \\Li:ikV ------ ------- E AST 11 kV OA:TH 230,c '-,} ------DA.9:LI NGT O CO UN T Y DAR LI NGTON OR TH LC E 2'3 0 k 'V SCP'S~ LI NE 2'30 k V 100% Power
 
11..,k\\l S T AllT UP T FI NS f Or.lMEFI 2j0:i!: 'i ST AR T U P' T Flttl'ISF OR ME ~ t-1AI T RANSF GH. ER BAN K 7 HV - 2 7/36 / 45/50. 4 MV A H 'i-2'7/ 3 6 / 45 / 50. "1 M VA 3 - 330 MVA lPH. 60 H Z
~ -0 L Y-13. 5 / 18 /22.5/25. 2 t-1V A CEAC H> L V - l':'.l. '5 /1 8/22.5 /2 5. 2' MY A (E ACHJ
 
2<1 - D! S C-S wY - SU T-11 5
 
GEN. DI SC. UN IT AUXILI AR't T R ANS F ORM ER # 2 H IJ44 /.C9. 2 MV A LI NK. L \\1-22/24. 6 MVA <E AC H)


Current and Proposed TS / SR 3.8. 1 AC Sources - Operating LCO 3.8 .1          The following AC electrical sou rces shall be OPERABLE:
S'W - lCFR SS T-SH-2 J OFF O
: a.      Two qualified circuits between the offsite transmission network and the onsite emergency AC Electrical Power Distribution System ; and
: b.      Two diesel generators (DGs) capa ble of supplyi ng the onsite emergency power distribution subsystem (s).
APPLICAB ILI TY:    MODES 1, 2, 3, and 4 .
SR 3.8. 1.16    --- ----------------------NOTE------------------------------------
: 1. This Surveillance shall not be performed in MO DE 1or2.                                    ~
: 2. SR 3.8.1 .16 is not required to be met if 1.160 IN b1,Js 2 OAS 480 V Emergency Bus 1 power supply is
___ _from a start up transformer. ~        low er case "b"      I Verify automatic transfer capability of the 1.160 It'/ b1,Js      In accordance with 2 OAS 11:le 480 V Emergency bus 1 loads fro m the Unit            the Surveillance au xiliary transformer to a start up transformer.                  Frequency Con trol Program 4
4


System Design and Operation TS 3.8.1 Bases Design of AC electrical power system ensures power to Engineered Safety Feature (ESF) systems Offsite circuit: equipment required to transmit power from offsite transmission network to ESF buses Normal 100% power lineup from Startup Transformers (SUT), Unit Auxiliary Transformer (UAT):
S S T 20
115 kV SUT  4.160 kV bus 6  480 V Emergency bus 1 (ESF bus E1) 230 kV SUT  4.160 kV bus 9  480 V Emergency bus 2 (ESF bus E2)
UAT  4.160 kV bus 2 SR 3.8.1.16 automatic transfer from UAT to SUT Breakers 52/7 and 52/20 open; breakers 52/12 and 52/19 close 5
5


W-EST \Li:ik V - - - - - -            - - - - - - - EAST 11 kV                                OA:TH 230,c '-,} - - - - - -                            DA.9:LINGTO COUNT Y                                                        DARLINGTON ORTH LC E 2'30 k 'V                                                SCP'S~ LINE 2'30k V 100% Power 7~-0        11.., k\l S TAllTUP T FI NSf Or.lMEFI HV- 2 7/36/ 45/50. 4 MVA L Y- 13. 5 / 18 /22.5/25. 2 t-1 VA CEAC H>
2j0:i!: 'i ST AR TUP' TFlttl'ISF ORME~
H'i- 2'7/3 6 / 45/ 50. "1 MVA L V- l':'.l. '5/18/22.5 /25 . 2' MYA (E ACHJ t-1 AI    TRANSF GH. ER BANK 3 - 330 MVA l PH. 60HZ 2<1- D! SC- S w-Y- SUT-11 5 GEN. DISC .      UNIT AUXILIAR't TRANS F ORMER # 2 LINK.                        HIJ44 /.C9. 2 MVA L \1 - 22/24. 6 MVA <EAC H)
S'W- lCFR-SS T- SH- 2 J OFFO SST 20
( ~
( ~
SWITCHG EAR BUlLDING 46G
              -* ADS 52 32 52 6)52                                  2B8
                                                                                                                                                                    'j'' 3ZB
                -i- ---,.,i~0~5                                        I ) 52 I BB 9 !0v    EMERGE  CY 6~
WJJ IG        OEDIC.OTEO SHUT DOWN TRANSF ORMER
                                                                                                                                  !)                              0 t*
                                                                                                      ! )52 17~
52                                                        52 J;l?B                    22B  N. O.
DIESEL UENERAT OR 32'50 K'iA. 4160V , 30. 60H Z 298 6
6 EMERGENCY DIESEL                                                                                                EMERGENCY []IE 5 EL
                      -' . JS.k V BUS 10                                                        GE ERATOR A                                                                                                        GENERATOR B 3125 KV A. 3 a 60HZ                                                                                              31 25 K\I A. 30. 60Hl


Reason for the Proposed Change SR 3.8.1.16 requires auto transfer capability for both 4.160 kV bus 2 and 480 V Emergency bus 1 Amendment 261 added 230 kV SUT and four 4.160 kV buses Direct 4.160 kV feed to 480 V Emergency bus 1 changed from bus 2 to bus 6 480 V Emergency bus 1 can now be aligned to SUT when 4.160 kV bus 2 is not Maintenance that prevents auto transfer of 4.160 kV bus 2 results in SR 3.8.1.16 not met 480 V Emergency bus 1 is aligned to offsite power, so there is no applicable TS 3.8.1 Condition SR 3.8.1.16 Note 2 does not alleviate this situation SR 3.8.1.16 -------------------------NOTE------------------------------------
BUlLDING 46G SWITCH G EAR
: 1. This Surveillance shall not be performed in MODE 1 or 2.
- ADS 52 32 6 )52 52 2B8
: 2. SR 3.8.1.16 is not required to be met if 4 .160 kV bus 2 and 480 V Emergency Bus 1 power supply is from a start up transformer.
'j' ' 3ZB I I BB ) 52 WJJ OEDI C.OTE O SHU T DO WN
-i----,.,i~0~ 5 9!0v EME R GE CY 6 ~ I G T RANSF ORM ER
! ) 52 52 ! ) 0 5 2 22B N. O.
J; l?B U ENERAT OR DIESEL 298 17~ 32'5 0 K'iA. 4160V, 30. 60 H Z t* 6 6
EMER GE NCY DI E SEL E MERG E NC Y []IE 5 EL
-'. JS.k V BUS 10 3125 KV A. 3 a 60 HZ GE ERA T OR A 31 25 K\\IA. 3 0. 60 Hl GE NERA T OR B Reason for the Proposed Change
 
SR 3.8.1.16 requires auto transfer capability for both 4.160 kV bus 2 and 480 V Emergency bus 1
 
Amendment 261 added 230 kV SUT and four 4.160 kV buses Direct 4.160 kV feed to 480 V Emergency bus 1 changed from bus 2 to bus 6 480 V Emergency bus 1 can now be aligned to SUT when 4.160 kV bus 2 is not
 
Maintenance that prevents auto transfer of 4.160 kV bus 2 results in SR 3.8.1.16 not met 480 V Emergency bus 1 is aligned to offsite power, so there is no applicable TS 3.8.1 Condition SR 3.8.1.16 Note 2 does not alleviate this situation
 
SR 3.8.1.16 - -- -- -- --- --- -- --- ---- -- -NOTE- --- -- -------- -- --- -- -- -- --- --- -- ---
: 1. T his Su rveillance sha ll no t be performed in MOD E 1 or 2.
 
2. SR 3.8.1.16 is no t req u ired to be met if 4.160 kV bus 2 a nd 48 0 V Emergency Bu s 1 po w e r sup ply is from a s ta rt up transformer.
7 7
7 7


===Background===
===Background===
Amendment 176 (improved Standard TS) added SR 3.8.1.16 Prior to Amendment 261:
Amendment 176 (improved Standard TS) added SR 3.8.1.16 Prior to Amendment 261:
                                                                                                ~
Unit AUXIiiary                CEH. DI SC.    .,l Transformer                      LJN~        ~
Ml.IN GEN . 2 22kV, 89 6,9 W A
            )                                  ~      OS TRANS
                                                                                )
480V EIIIERCENCY BUS El N.0.                                N.O.
OS DtESEL GEN.
8 8
EMERG. DI ESEL                                                EMERG. Dl ESEL GEN . A                                                      GEN. B


Justification TS 3.8.1 and associated Bases Required loads to consider offsite circuits operable are the ESF bus loads Amendment 176 justification for adding SR 3.8.1.16:
Unit AUXI iiary CEH. DI SC..,l ~
Tra n sformer LJN~ ~
22kV, 8 9 6,9 W A Ml.IN GEN. 2
 
) ~ OS TRAN S )
480V EIIIERC EN CY BUS El
 
N.0. OS DtESEL GEN. N.O.
8 EMERG. DI ES EL GEN. A EME RG. Dl ESEL GEN. B 8 Justification
 
TS 3.8.1 and associated Bases Required loads to consider offsite circuits operable are the ESF bus loads
 
Amendment 176 justification for adding SR 3.8.1.16:
added to verify the automatic transfer of the emergency bus E1 loads from the unit auxiliary transformer to the startup transformer.
added to verify the automatic transfer of the emergency bus E1 loads from the unit auxiliary transformer to the startup transformer.
Amendment 261 Direct 4.160 kV feed to 480 V Emergency bus 1 changed from 4.160 kV bus 2 to bus 6 Removal (vs. replacement) of the 4.160 kV bus better focuses SR 3.8.1.16 on the required ESF loads 9
9


Schedule Submit LAR by April 28, 2022 Implementation within 120 days of receipt of safety evaluation 10 10
Amendment 261 Direct 4.160 kV feed to 480 V Emergency bus 1 changed from 4.160 kV bus 2 to bus 6
 
Removal (vs. replacement) of the 4.160 kV bus better focuses SR 3.8.1.16 on the required ESF loads
 
9 9
Schedule
 
Submit LAR by April 28, 2022
 
Implementation within 120 days of receipt of safety evaluation


11}}
10 10 11}}

Latest revision as of 13:45, 18 November 2024

Presubmittal Licensee Presentation for SR 3.8.1.16 Proposed License Amendment Request (EPID L-2022-LRM-0021) (Slides)
ML22083A107
Person / Time
Site: Robinson Duke Energy icon.png
Issue date: 03/30/2022
From:
Duke Energy Progress
To: Tanya Hood
NRC/NRR/DORL/LPL2-2
Hood T
References
EPID L-2022-LRM-0021
Download: ML22083A107 (11)
v • d • e


Text

Robinson / NRC Pre-submittal Meeting:

LAR to Remove 4.160 kV bus 2 from Surveillance Requirement 3.8.1.16 ( ~ DUKE March 30, 2022 ~ ENERGY Duke Energy Attendees

Lee Grzeck (Manager, Nuclear Fleet Licensing)

Joshua Duc (Nuclear Fleet Licensing)

Keith Beatty (RNP Engineering)

Alan Helms (RNP Engineering)

David Zybak (RNP Operations)

2 2

Agenda

Current and Proposed Technical Specification (TS) / Surveillance Requirement (SR)

System Design and Operation Reason for the Proposed Change

Background

Justification Schedule

3 Current and Proposed TS / SR 3.8. 1 AC Sour c es - Ope rating

LCO 3.8.1 The fo llo w ing AC electrical sou rces shall b e OPERAB LE :

a. Tw o q u a lified c irc u its be tween the o ffsite tra n smission ne twor k and the onsi te em erg en c y AC Electrica l Po w er Distribut ion Sy stem ; and

b. Tw o d iesel gene rators (DGs) capa b le of su pplying the ons ite emergenc y po w er distrib u tion su bs y stem (s).

A P PLICAB ILI T Y : MOD ES 1, 2, 3, an d 4.

SR 3.8. 1.16 - -- ---- ---- ------ -------- NOT E----- --- ------- ---- ----- -- - ------ ---

1. Th is Sur veillan ce shall not b e perform ed in MO DE 1or2. ~

2. SR 3.8.1. 16 is no t req u ired to be me t if 1. 160 IN b 1,Js 2 OAS 480 V Emergenc y Bus 1 po w er supply is

_ __ _ from a s tart up transformer. ~ low er case "b" I

V erify a u tomatic transfer ca p ab ility of the 1.160 It'/ b1,Js In acco rdance w ith 2 OAS 11:le 4 8 0 V Eme rgenc y bus 1 loads from the U n it the Sur veillance au x iliar y transforme r to a sta rt u p tran sformer. Freq u en cy C on trol Progra m 4

4 System Design and Operation

TS 3.8.1 Bases Design of AC electrical power system ensures power to Engineered Safety Feature (ESF) systems Offsite circuit: equipment required to transmit power from offsite transmission network to ESF buses

Normal 100% power lineup from Startup Transformers (SUT), Unit Auxiliary Transformer (UAT):

115 kV SUT 4.160 kV bus 6 480 V Emergency bus 1 (ESF bus E1) 230 kV SUT 4.160 kV bus 9 480 V Emergency bus 2 (ESF bus E2)

UAT 4.160 kV bus 2

SR 3.8.1.16 automatic transfer from UAT to SUT Breakers 52/7 and 52/20 open; breakers 52/12 and 52/19 close

5 5

W-E ST \\Li:ikV ------ ------- E AST 11 kV OA:TH 230,c '-,} ------DA.9:LI NGT O CO UN T Y DAR LI NGTON OR TH LC E 2'3 0 k 'V SCP'S~ LI NE 2'30 k V 100% Power

11..,k\\l S T AllT UP T FI NS f Or.lMEFI 2j0:i!: 'i ST AR T U P' T Flttl'ISF OR ME ~ t-1AI T RANSF GH. ER BAN K 7 HV - 2 7/36 / 45/50. 4 MV A H 'i-2'7/ 3 6 / 45 / 50. "1 M VA 3 - 330 MVA lPH. 60 H Z

~ -0 L Y-13. 5 / 18 /22.5/25. 2 t-1V A CEAC H> L V - l':'.l. '5 /1 8/22.5 /2 5. 2' MY A (E ACHJ

2<1 - D! S C-S wY - SU T-11 5

GEN. DI SC. UN IT AUXILI AR't T R ANS F ORM ER # 2 H IJ44 /.C9. 2 MV A LI NK. L \\1-22/24. 6 MVA <E AC H)

S'W - lCFR SS T-SH-2 J OFF O

S S T 20

( ~

BUlLDING 46G SWITCH G EAR

- ADS 52 32 6 )52 52 2B8

'j' ' 3ZB I I BB ) 52 WJJ OEDI C.OTE O SHU T DO WN

-i----,.,i~0~ 5 9!0v EME R GE CY 6 ~ I G T RANSF ORM ER

! ) 52 52 ! ) 0 5 2 22B N. O.

J; l?B U ENERAT OR DIESEL 298 17~ 32'5 0 K'iA. 4160V, 30. 60 H Z t* 6 6

EMER GE NCY DI E SEL E MERG E NC Y []IE 5 EL

-'. JS.k V BUS 10 3125 KV A. 3 a 60 HZ GE ERA T OR A 31 25 K\\IA. 3 0. 60 Hl GE NERA T OR B Reason for the Proposed Change

SR 3.8.1.16 requires auto transfer capability for both 4.160 kV bus 2 and 480 V Emergency bus 1

Amendment 261 added 230 kV SUT and four 4.160 kV buses Direct 4.160 kV feed to 480 V Emergency bus 1 changed from bus 2 to bus 6 480 V Emergency bus 1 can now be aligned to SUT when 4.160 kV bus 2 is not

Maintenance that prevents auto transfer of 4.160 kV bus 2 results in SR 3.8.1.16 not met 480 V Emergency bus 1 is aligned to offsite power, so there is no applicable TS 3.8.1 Condition SR 3.8.1.16 Note 2 does not alleviate this situation

SR 3.8.1.16 - -- -- -- --- --- -- --- ---- -- -NOTE- --- -- -------- -- --- -- -- -- --- --- -- ---

1. T his Su rveillance sha ll no t be performed in MOD E 1 or 2.

2. SR 3.8.1.16 is no t req u ired to be met if 4.160 kV bus 2 a nd 48 0 V Emergency Bu s 1 po w e r sup ply is from a s ta rt up transformer.

7 7

Background

Amendment 176 (improved Standard TS) added SR 3.8.1.16 Prior to Amendment 261:

Unit AUXI iiary CEH. DI SC..,l ~

Tra n sformer LJN~ ~

22kV, 8 9 6,9 W A Ml.IN GEN. 2

) ~ OS TRAN S )

480V EIIIERC EN CY BUS El

N.0. OS DtESEL GEN. N.O.

8 EMERG. DI ES EL GEN. A EME RG. Dl ESEL GEN. B 8 Justification

TS 3.8.1 and associated Bases Required loads to consider offsite circuits operable are the ESF bus loads

Amendment 176 justification for adding SR 3.8.1.16:

added to verify the automatic transfer of the emergency bus E1 loads from the unit auxiliary transformer to the startup transformer.

Amendment 261 Direct 4.160 kV feed to 480 V Emergency bus 1 changed from 4.160 kV bus 2 to bus 6

Removal (vs. replacement) of the 4.160 kV bus better focuses SR 3.8.1.16 on the required ESF loads

9 9

Schedule

Submit LAR by April 28, 2022

Implementation within 120 days of receipt of safety evaluation

10 10 11

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