ML20128K119

Calculation for LOCA Block Start

ML20128K119
Person / Time
Site:	Clinton
Issue date:	02/13/1996
From:	Haumann A ILLINOIS POWER CO.
To:
Shared Package
ML20128K039	List: ML20128K035 ML20128K071 ML20128K119 U-602635, Rev 2 to Vol D to Calculations for Functional Requirements for 1st & 2nd Level Undervoltage Relays at 4 Kv 1A1,1B1 & 1C1
References
19-AQ-02, 19-AQ-02-R03, 19-AQ-2, 19-AQ-2-R3, NUDOCS 9610100287
Download: ML20128K119 (45)

Text

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Attachment 6 to U-602635 LS-94-013, Page 2 of 41 CALCULATION COVER SHEET SHEET 1 OP g TITLE /DESCRIFI1ON: DEPT /DIV I CALCULATION NO.

E/EPED 19- AQ-02

• ] CALCULATION FOR LOCA BLOCK START QUAllTY SYSTEM CODE TOPIC BLDG /ELEV/ AREA RELATED (or NA) (or NA)

(Q or N) ,

O AP E95 N/A l APPROVALS - NAME/ SIGNA'IURE/DATE i CORP PREPARING REVISION VOLUME READY FOR INCORPORATION:

PREPARED BY Alan Haumann TIUS REV.

YES d NO N/A rw IP 3 V L- iib I Ef Ws A )! -

MICROFICHE ATTACHED:

l DATE NOMME CONFIRMATION REQUIRED YES d NO

., gggy YES NO PAGE NO(s)

CHECKED BY  ;

N VOL. INCORP. ASSGNMNT. Enginecnno  !

D^" sommE MOD. AP-28,29 &27 ECN CR COMMENTS: MWR j bm . .L ' tee.Ksi. e ,J RWIEWED BY '" '

THIS VOLUME IS AN EXTENSIVE UPDATE OF THE ASSUMPTIONS AND s g5gg 5 %LQh SIGNAWRE VOLTAGE DATA.  :

/ CORP PREPARING REVISION VOLUME READY FOR INCORPORATION:

PREPARED BY THIS REV. YES NO N/A rw I I MICROFICHE ATTACHED:

DATE ,,,, CONF 1RMAT10N REQUIRED YES NO YES NO PAGE NO(s)

CHECKED BY PRDer VOL. INCORP. ASSGNMNT.

DATE ,a,,, MOD. ECN CR COMMENTS: MWR REVIEWED BY ,

) , ,

FRDfr

• I i b DATE m0 NATURE e

T  !

READY FOR INCORPORATION: )

h CORP PREPARING REVISION VOLUME il PREPARED BY THIS REV. YES NO N/A y; rRotr I I  !

MICROFICHE ATTACHED:

DATE SiONAWRE CONFIRMATION REQUIRED YES NO b YES NO PAGE NO(s)

CHECKED BY PN VOL. INCORP. ASSGNMNT.

I I

. DATE maNATURE MOD. ECN CR l

COMMENTS: MWR REVIEWED BY rm i I DATE SIGNATURE 9610100287 961004 PDR ADOCK 05000461 P PDR

Attachment 6 to U-602635 LS-94-013, Page 3 of 41 Page 2_oL10 REVISION HISTORY

~

Dept./Div. E/EEED Calc. # IS-AQ-02

}

Revision 3 Volume (if applicable) y Objective: .L_To_clearify_1he_ assumptions _and. remove _the confirmation required _. 2. To updata the_ calculation _

based _nn_the_ latest.hus_ loading _infDImation and the_Islay_ settings.used in calculation 19-AN-19 R/3 VoLB l

Reason: Modifications _AP- 27,2B & 29 are required as the_ corrective action to CR 1-92-Od-D31. Thesa_ design  !

modifications will change _tha_degradad_3Dltage_ relay _ type and settings. This calculation supports the analitical limits.used_in_tha_seipoint.ralculation 19-AN-19 R/2 V/B ,

I List of Affected Pages: The body _of the calculation has been completely revisedden naan 3 for_ list of affected_.

attachments vyhich are changed by this volume.

Revision Volume (if applicable)

Objective:

Reason:

List of Affected Pages:

Revision Volume (if applicable)

Objective:

Reason:

1 List of Affected Pages:

NF-303 (10/95)

CALCULATION / PlV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 3 of 40 Attachment 6 to U-602635 LS-94-013, Page 4 of 41 TABLE OF CONTENTS Page COVER SHEET 1

1. REVISION HISTORY 2 TABLE OF CONTENTS 3

2. PURPOSE / SCOPE 2.1 PURPOSE 6 --

2.2 SCOPE

3. INPUT DATA 7

4. ASSUMPTIONS 9

5. ACCEPTANCE CRITERIA 11

6. METHODOLOGY 12

7. CALCULATION 20

8. COMPARISON OF RESULTS WITH ACCEPTANCE CRITERIA 21

9. CONCLUSIONS 35

10. Not used

11. REFERENCES 37 n'ILE Ap2R 3W, tk u'

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A. 4 of 40 Attachment 6 to U-602635 LS-94-013, Page 5 of 41 TABLE OF CONTENTS (CONT'D.)

12. FIGURES NOT INCLUDED IN TIIIS VOLUME

13. ATTACHMENTS . No of PAGES

- VOLTAGE

SUMMARY

- T=0 SEC. SOURCE = RAT 9 13.1 A~ITACHMENT I

- VOLTAGE

SUMMARY

-T=0 SEC. SOURCE = RAT 9 13.2.1 ATTACHMENT 2.1 13.2.2 A'ITACHMENT 2.2 - DELETED BY THIS VOLUME

- VOLTAGE

SUMMARY

- T=3 SEC. SOURCE = RAT 9 13.3 ATTACHMENT 3 ATTACHMENT 4 - VOLTAGE

SUMMARY

- T=4 SEC. SOURCE = RAT 9 13.4

- VOLTAGE

SUMMARY

- T=4.5 SEC SOURCE = RAT 9 13.5 ATTACHMENT 5

- VOLTAGE

SUMMARY

- T=5 SEC. SOURCE = RAT 9 13.6.1 ATTACHMENT 6.1

- VOLTAGE

SUMMARY

- T=5* SEC. SOURCE = RAT 9 ,

13.6.2 ATTACHMENT 6.2

- VOLTAGE

SUMMARY

- T=7 SEC. SOURCE = RAT 9 13.7.1 ATTACHMENT 7.1 13.7.2 A'ITACHMENT 7.2 - NOT INCLUDED IN THIS VOLUME l

- VOLTAGE

SUMMARY

-T=13 SEC. SOURCE = RAT 8 l 13.8.1 ATTACHMENT 8.1 '

13.8.2 ATTACHMENT 8.2 - NOT INCLUDED IN THIS VOLUME

- VOLTAGE

SUMMARY

- STEADY STATE (3870 V)-RAT 12 13.9 ATTACHMENT 9

- VOLTAGE

SUMMARY

- STEADY STATE (3832 V)-RAT 12 13.10.1 ATTACHMENT 10.1 13.10.2 ATTACHMENT 10.2 - VOLTAGE

SUMMARY

- STEADY STATE (MIN OFFSITE) RAT 12

- VOLTAGE

SUMMARY

- T=0 SEC. - SOURCE = ERAT 7 13.11 A1TACHMENT il

- VOLTAGE

SUMMARY

- T=0+ SEC. - SOURCE = ERAT 7

- 13.12 ATTACHMENT 12 SOURCE = ERAT 7

) 13.13 ATTACHMENT 13 - VOLTAGE

SUMMARY

-T=3 SEC. -

7 13.14 ATTACHMENT 14 - VOLTAGE

SUMMARY

- T=4 SEC. - SOURCE = ERAT

- VOLTAGE

SUMMARY

- T=4.5 SEC. - SOURCE = ERAT 7 13.15 ATTACHMENT 15

- VOLTAGE

SUMMARY

- T=5 SEC. - SOURCE = ERAT 7 13.16 ATTACHMENT 16

- VOLTAGE

SUMMARY

- T=7 SEC. - SOURCE = ERAT 7 13.17.1 ATTACHMENT 17.1 13.17.2 ATTACHMENT 17.2 - NOT INCLUDED IN THIS VOLUME

- VOLTAGE

SUMMARY

-T=13 SEC. - SOURCE = ERAT 6 13.18.1 ATTACHMENT 18.1 13.18.2 ATTACHMENT 18.2 - NOT INCLUDED IN THIS VOLUME

- VOLTAGE

SUMMARY

- STEADY STATE (3870 V)-ERAT 6 13.19 A1TACHMENT 19

- VOLTAGE

SUMMARY

- STEADY STATE (3832 V)-ERAT 6 13.20.1 ATTACHMENT 20.1 13.20.2 ATTACHMENT 20.2 - VOLTAGE

SUMMARY

- STEADY STATE (MIN OFFSITE) ERAT 6 13.21 A1TACHMENT 21 - VOLTAGE DROP FROM SOURCE BUS TO MOTOR TERMINALS AND MOTOR FEEDER CIRCUIT DATA 11 Table 2 5

Table 2B

' 3 Table 4 3

Table 4A 13.22 ATTACHMENT 22 - NOT INCLUDED IN THIS VOLUME 13.23 ATTACHMENT 23 -NOT INCLUDED IN THIS VOLUME J

FILE A ' 3VV . DOC

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 5 of 40 Attachment 6 to U-602635 LS-94-013, Page 6 of 41 TABLE OF CONTENTS (CONT'D.)

P. age.g

13. ATTACllMENTS 13.24 ATTACllMENT 24 - NOT INCLUDED IN THIS VOLUME 13.25 ATTACilMENT 25 - NOT INCLUDED IN THIS VOLUME 13.26 ATTACHMENT 26 - NOT INCLUDED IN THIS VOLUME 13.27 ATTACilMENT 27 - NOT INCLUDED IN THIS VOLUME 13.28 ATTACHMENT 28 - NOT INCLUDED IN THIS VOLUME 13.29 ATTACllMENT 29 - NOT INCLUDED IN THIS VOLUME 13.30 ATTACIIMENT 30 - NOT INCLUDED IN THIS VOLUME 13.31 ATTACHMENT 31 - REFERENCE INFORMATION -

1 Reference 11.36 added by this volume 13.32 ATTACHMENT 32 - MCC CONTROL CIRCUIT REVIEW DELETED FROM THIS

' ~) CALCULATION SEE 19-AJ-70 AND 71 FOR THIS ANALYSIS 13.33 ATTACIIMENT 33 - NOT INCLUDED IN THIS VOLUME 13.34 ATTACUMENT 34 - IMPACT OF 6.9-KV AND 4.16-KV LOAD DIFFERENTIAL DELETED BY THIS VOLUME THE ACTUAL VALUES FROM 19-AK-6 ARE USED IN THIS VOLUME 13.35 ATTACHMENT 35 - LOCA FAN START TIME EVALUATION AND MANUFACTURED DATA.

ADDED BY THIS VOLUME ,

118 pages 13.36 ATTACHMENT 36 - COMPARISON OF SWITCHGEAR LOADS FOR WINTER PEEK FOUND CALCULATION 19-AK-06 AND THE ACTUAL LOADS FROM TRENDIT DATA FOR THE WINTER OF 1995. 10 pages 13.36 ATTACHMENT 37 - EVALUATION OF HYDROGEN IGNITER TRANSFORMER TAP SETTINGS 3 pages J

f! LI AQ/R 3W. [XC

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V - NSED ELECTRICAL D&A 6 of 40 Attachment 6 to U-602635 LS-94-013, Page 7 of 41

~) 2. PURPOSE / SCOPE 2.1 PURPOSE This calculation will determine if loads receive adequate terminal voltage to allow continuous duty motors to accelerate.

This calculation will determine if steady state motor terminal voltages for continuous duty LOCA initiated loads are at least 90% of motor rated voltages. This calculation will determine motor terminal voltages for motor-operated valves (MOV) . The MOV terminal voltage information is used as input to MOV thrust and torque switch (M98 series) calculations.

2.2 SCOPE The scope of this calculation includes motors receiving a LOCA start signal as ident'.fied in Attachment 24 of the base calculation. This calculation will also determine motor terminal voltages for MOVs which require valve thrust calculations. The MOVs included are defined in Reference 11.31. This evaluation will be performed for both offsite sources, the Reserve Auxiliary Transformer (RAT), and the Emergency Reserve Auxiliary Transformer (ERAT).

Evaluation of MCC contactor protection (fuse blowing) for degraded voltage is not included in the scope of this calculation. See calculation 19-AJ-70 for this information (Ref 11.33).

~ Evaluation of protective devices tripping of 460-V continuous duty motors is not included in the scope of this calculation.

FI LE AQ2 R 3VV. IW,w'

CALCULA FION / REV. DEPT /DIV/SECTION SHEET l 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 7 of 40 l Attachment 6 to U-602635

[

LS-94-013, Page 8 of 41

)

3. INPUT DATA 3.1 ACCELERATION TIMES FOR MEDIUM VOLTAGE MOTORS SERVICE EQUIPMENT  % RATED ACCELERATI REFERENCE NO. VOLTAGE ON TIME (SEC.)

! HPCS 1E22-C001 100 1.56 11.5 i 80 3.12 11.5 75 4.78 11.5 LPCS 1E21-C001 100 1.085 11.4 80 2.17 11.4 75 4.00 11.19, -

11.20 RHR 1E12-C002A, 100 1.25 11.4 B, C 80 2.40 11.4 75 3.30 11.19, 11.20 SSW ISX001PA, B 100 0,80 11.4

) 90 1.15 11.4 75 2.50 11.4 3.2 The following motors.have minimum starting voltages'of 75%

(Reference 11.17). Attachment 35 contains additional actual start time evaluation and fan manufacturer data.

OVG05CA 1VD01CC 1VXO3CB IVY 01C 1VY05C ,

OVG05CB IVH01CA 1VX03CC IVYO2C 1VYO6C  !

1VD01CA 1VH01CB IVYO3C IVYO7C 1VD01CB IVX03CA 1VYO4C IVYO8CA 1VY08CB 3.3 The minimum starting voltages for 9VG02CA and OVG02CB are not specified. However, the following is obtained from the vendor data (Reference 11.16):

HP Rating 30 hp Calculated BHP required at the 20 BHP maximum specified driven equipment output This data is used in the fan start time evaluation performed in Attachment 35.

F1 LE AQ2RJW. tw3 ?

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 8 of 40 Attachment 6 to U-602635 LS-94-013, Page 9 of 41

-) 3.4 SSW 1C Pump Motor 1SX01PC is required to accelerate to rated flow in a maximum of five seconds with a 75% rated terminal voltage (Reference 11.15). The start time for SSW 1C is evaluated in calculation 19-AQ-08 (Referance 11.34).

3.5 INTENTIONALLY LEFT BLANK.

3.6 The dropout voltage for ITE and GE MCC size 1 & 2 contactors is 45 and 65 volts respectively Note: size 3 & 4 contactors are 480 volt' units). The pickup voltage for MCC contactors is 84 (70% of 120 V)and 90 volts (Reference 11.33).

3.7 The minimum voltage required by the contactors fed from control transformers located in the MCC buckets is taken from calculations 19-AJ-70 and 71. In addition modifications AP- '

027, 28, & 29 replaces the existing distribution transformers with regulating transformers which maintain the low side voltage between 113 and 121 volts with the MCC bus between 414 and 530 volts (Referance 11.33)..

. 3.8 The maximum safe stall time at rated locked rotor current ranges from 10 to 30 seconds for various MOV motor sizes (Reference 11.25) .

) 3.9 Minimum motor terminal voltage for steady state operation for NEMA frame motors is 90% of rated (Referende 11.24 NEMA MG-1).

3.10 The minimum reset voltage for the second level undervoltage relays is 3870 V. The minimum trip voltage for second level undervoltage relays is 3832 V (Reference 11.6).

3.11 The following are the safe stall times and overcurrent relay trip times for the medium voltage motors being evaluated (References 11.4 and 11.5).

Load Name Thermal Limit (Sec.)

100% 90% V 80% V 75% V V

1SXO1PA/PB 14s 17s 24.5s 1E12- 14s 18s C002A/B/C 1E21-C001 14s 18s 1E22-C001 14s 18s 19s FILE AU2R3W.(u?

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 9 of 40 Attachment 6 to U-602635 I LS-94-013, Page 10 of 41

)

Load Name Overcurrent Relay Trip Time (Sec.)

100% 90% V 80% V 75% V V

1SX01PA/PB 5.5s 5.7s 6.7s 1E12- 4.0s 4.5s C002A/B/C 1E21-C001 4.4s 5.0s l

1E22-C001 4.75s 5.45s 5.8s 3.12 The tap setting for the Reserve Auxiliary Transformer (RAT) is at Tap 3.

4. ASSUMPTIONS 4.1 INTENTIONALLY LEFT BLANK.

4.2 Data for Westinghouse NEMA motors with a service factor of 1.0 supplied to Buffalo Forge have a safe stall time at rated

) voltage (drawing locked rotor current) from 16 to 31 second and at 65% of rated voltage from 42 to 85 seconds. This is considered typical. Therefore, for the purposes of this  ;

analyses, a 15-second safe stall time at rated locked rotor j I

current is assumed.

4.3 MCC contactors energized prior to, or at T=0 are assumed to remain energized at T=0*. This is conservative since it produces worst case T=0 motor terminal voltages. If some contactors drop out at T=0 due to the degraded bus voltage, then the initial starting load would be reduced. Devices typically have approximately a 20% difference between their pickup and dropout values and, therefore, contactors which may drop out are not expected to pick up until bus voltages improve by approximately 20%.

4.4 Calculation 19-AK-6 identifies estimated power factors and efficiencies for 460-V continuous-duty motors. Manufacturer full-load current data is available for certain 460-V motors and is used to determine a more accurate power factor and efficiency. For these motors, the actual full-load current is used to calculate the product of PF*EFF as documented in Attachment 27. A high power factor is assumed to conservatively produce a higher feeder cable voltage drop since d the motor feeder cables are more resistive than reactive. A high power factor is arbitrarily assumed and the efficiency is l

calculated and documented in Attachment 27 of the base calculation.

FILE A02R3VV.twC

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 10 of 40 Attachment 6 to U-602635 LS-94-013. Page 11 of 41 [

'i 4.5 The MOV motor terminal voltages documented in Attachment 21, i Table 2 provide sufficient motor torque to seat / unseat. This i is verified in the associated Series M98, MOV thrust calculation. The voltage values from this calculation are used as inputs to the Series M98 calculations.  ;

4.6 INTENTIONALLY LEFT BLANK. 3 4.7 Continuous duty motors with reduced voltage start accelerating i at T=0 due to the large delta between available motor torque and required driven equipment torque at low speed (i.e., motors (See Reference 11.34 for will not stall at T=0 seconds). '

typical examples.)

4.8 INTENTIONALLY LEFT BLANK.

4.9 Compressor and pump loads typically have low WK* values in relation to the motors capability to accelerate the load.

4.10 INTENTIONALLY LEFT BLANK.

4.11 Attachment 21 contains assumptions.

_) 4.12 A minimum starting voltage of 80% is assumed for damper motors.

(See ROC Referance 11.36 found in Attachment 31. )

4.13 The acceleration times for 460-V continuous duty motors are estimated as starting or running at specific times in the block start model . (Attachment 35. )

U FILE AW H3VV.t k

i CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 11 of 40 Attachment 6 to U-602635 LS-94-013, Page 12 of 41 l I

4.14 The base calculation states " Conservatism in modeled loading l for the full-load winter operation case in calculation 19-AK-6 l is assumed to be the same as the conservatism confirmed for the '

full-load summer operation case." This assumption has been l verified by comparing the actual BOP load data captured by the TRENDIT (the plant data acquisition and trending) program for the winter of 1995 (the months of January, February and December) with the reduced BOP load used in the REV. 3 Base Calculation. The difference between the AK-06 and TRENDIT data was 3.91 and 4.66 MVA for the 6.9 and 4.16 KV buses  :

respectively. 19-AQ-02 REV. 3 Base Calculation reduced 6.9 KV bus lA by 2.93 MVA and 4.16 KV bus lA by 2.25. This is conservative and will be used in this volume to reduce the load on 6.9KV and 4.16KV 1A buses. (SEE ATTACHMENT 36) -

5. ACCEPTANCE CRITERIA 5.1 Continuous Duty Motors The acceptance criteria for starting motors is that they accelerate within the allowable safe stall time which is assumed to be 15 seconds at rated locked rotor current for continuous duty 460-V motors. For conservatism, 13 seconds

) will be used as the acceptance criteria.

The acceptance criteria for steady state conditions for continuous duty motors is that motor voltages recover to greater than 90% of rated voltage within one minute.

5.2 MOV Motors The adequacy of motor terminal voltages is not estarlished in this calculation. The MOV motor voltage is used as inputs to Series M98 MOV thrust calculations.

5.3 Overcurrent Protective Devices The acceptance criteria for protective devices (Medium voltage over-current relays) is that motors accelerate without tripping the motor's overcurrent protective devices.

5.4 MCC Contactors The acceptance criteria for MCC contactors is that MCC bus voltages recover to 427 volts to allow contactor pickup or above the minimum voltage listed in calculation 19-AJ-70 for those MCCs with a steady state voltage below 427. The time

(,) allowed for b'us recovery for contactor pickup is approximately 12 seconds, which equals the time delay on motor starting from the diesel generator following a LOCA signal. As long as f ILE AWR W . [k W!

m - ,__ _ - . _ _ . - . _ _

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Attachment 6 to U-602635 LS-94-013, Page 13 of 41 8

contactors pick up within 12 seconds, no unique analysis of delayed motor /MOV starting is required. Evaluation of the acceptability of inrush current durations for contactors subjected to voltages below rated pickup is outside the scope l cf this calculation (i.e., control circuit fuse blowing is covered by calculation 19-AJ-70).

6. METHODOLOGY 6.1 Offsite Source Voltage 6.1.lThe evaluation will be performed for both off-site sources, one source at a time. The voltages of the sources are assumed to be at a level such that voltages at safety-related 4.16-kV Buses lAl, 1B1, and 1C1 recover to a value just above the '

minimum second level undervoltage relay reset voltage within 15 seconds after LOCA loads are block started. Fifteen seconds is j the time delay associated with the second level undervoltage l relay. The second level undervo.'tage relay reset voltage is j used because if voltages do not recover to this level, the buses-will be tripped and transferred to the diesel generators.

Therefore, the offsite source voltages will be adjusted to a level such that the voltage at 13 seconds after LOCA block start is at the minimum second level undervoltage relay reset s_) voltage. For the purposes of this calculation, a voltage level of 3870 V will be used as the reset voltage.

For evaluation of individual motor starts after a LOCA signal (steady state conditions), the minimum trip voltage of i

the second level undervoltage relay is utilized. This voltage l level is used since the offsite source voltage could l

theoretically degrade to this level after the LOCA block start I had occurred. The minimum trip voltage of the second level undervoltage relay is 3832 V.

i The evaluations performed at 3870 V for block start and 3832 V for steady state provide a basis for determining if these voltage levels are adequate to allow LOCA block start motors to accelerate and provide a basis for determining if adequate steady state terminal voltages are supplied to Class 1E loads. These calculations also provide a bounding case evaluation for similar analyses at the minimum expected offsite source voltage which is used as the design basis for the auxiliary power system.

6.1.2The loading condition prior to LOCA signal motor starting is modeled as Full Load Operation-Winter. This provides the highest normal steady state auxiliary power system loading (o) prior to receipt of a LOCA signal. This loading condition is identified as Condition 2 in Calculation 19-AK-6.

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CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 13 of 40 Attachment 6 to U-602635 LS-94-013, Page 14 of 41

)

6.1.3Model Adjustments The ELMS-AC program allows 200 buses to be modeled. The base file for Calculation 19-AK-6 utilizes over 190 buses. This calculation will model motor terminal buses for various motors of interest. To free up additional buses for motor terminal modeling, the individual non-1E loads on 6.9-kV Bus 1A and 4.16-kV Bus 1A are removed and modeled as a single load on each of these medium voltage buses.

Calculation of motor terminal bus voltages is divided into several parts. Continuous duty motors greater than 1 hp which receive a LOCA signal are modeled in ELMS-AC with motor terminal buses. The terminal voltages for continuous duty

• motors less than 1 hp which receive a LOCA signal are calculated in Attachment 21 based on the ELMS-AC MCC bus voltages and the feeder cable voltage drop calculated in Attachment 21. The terminal voltages of motors for MOVs are calculated in Attachment 21 based on ELMS-AC calculated MCC bus voltages and the feeder cable voltage drop calculated in Attachment 21.

6.1.4 Reserve Auxiliary Transformer Loading Adjustments

( .)

The Revision 3 base for this calculation (19-AQ-02 Rev. 3) adjusted the RAT loading as follows: As identified in Calculation 19-AK-6, the modeling of the total loading on the reserve auxiliary transformer is conservative by a significant amount compared to actual measured load under full load operating conditions. Calculation 19-AK-6, Attachment K, l documents actual measured summer loading under full load operation. The evaluations performed at 3870 V for block start and the evaluation performed by this volume at 3832 V for steady state provide a basis for determining if these voltage l levels are adequate to allow LOCA block start motors to acceleration and provide adequate running voltage for Class 1E loads. The following is a comparison of measured data to modeled summer ful1 1oad operation [ Source 1 (genera tor) ,

Condition 3 (summer full-1oad operation)] load data:

l l

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CALCULATION / IEV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 14 of 40 l Attachment 6 to U-602635 LS-94-013, Page 15 of 41

) Modeled Measured Conservatism MW PF MW MW PF MVA 6.9 kV Bus 1A 16.993 0.96 14.80 2.19 0.96 2.28 1B 11.929 0.94 10.41 1.52 0.94 1.62 4.16 kV Bus 1 A 9.364 0.91 8.78 0.58 0.91 0.64 j 1B 8.888 0. 91 6.91 1.98 0.91 2.18 l 1Al* 1.658 0.87 0.47 1.19 0.87 1.37 2Bl* O.812 0.87 1.85 -1.04 0.87-1.20 l

1 Cl

• O.053 0.87 0.04 0.01 0.87 0.01 i

?

• Source 3 (ERAT) used since condition only modeled for Source 3.

Total Conservatism 6.9 kV Bus 3.90 MVA 8 0.95 PF 3.00 MVA @ 0. 91 PF 4.16 kV Bus The comparison of measured to modeled summer full-load operation loading is made because measured full-load winter loading was not available. It is assumed that the same amount j of conservatism exists in the modeled full-load winter 1 operation loading.

To more accurately reflect the actual RAT loading condition, a I portion (75%) of the above conservatism is subtracted from the modeled load for Condition 4 on 6. 9-kV Bus 1 A and 4.16-kV Bus 1A.

The Bulk Load modeled at 6.9 kV Bus 1A and 4.16 kV Bus 1A are s l therefore, as follows for Source 2 (RAT) Condition 4 (full-load l winter opera tion) :

1 19-AK-6 Load Load Conservatism 19-AQ-2 MVA Reduction - MVA MVA 1 6.9 kV Bus 1A 14.327 @ .983 3.90 x .75 = 2.93 @ .95 11.40 @ .99 l 4.16 kV Bus 1 A 11. 811 @ .937 3.00 x .75 - 2.25 @ .91 9.56 @ .94 l

FI LE AV2 R )VV. (k W:

L CALCULATION / REV. DEPT /DIV/SECTION SHEET l 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 15 of 40 Attachment 6 to U-602635 LS-94-013, Page 16 of 41 l This method has been verified by comparing the actual BOP load data captured by the TRENDIT program for the winter of 1995 (the months of January, February and December) with the BOP bus loading information found in calculation 19-AK-06 rev 0 volume Y.. The difference between the AK-06 and TRENDIT data was l 3.91 and 4.66 MVA for the 6.9 and 4.16 KV buses respectively.

19-AQ-02 REV. 3 Base Calculation reduced 6.9 KV bus 1A by 2.93  !

MVA and 4.16 KV bus 1A by 2.25. This is conservative. This  !

volume utilizes the BOP loading from calculation 19-AK-06 Rev 0 Volume Y as input and reduces the load on 4.16 and 6.9 1A buses l by 2.93 and 2.25 MVA respectively. The power factor in this volume is the same as shown in 19-AK-06 Rev 0 Volume Y. (See attachment 36) Because the load reductions used by this volume have been verified as conservative, future revisions to calculation 19-AQ-02 we will continue to reduce the load on the l 4.16 and 6.9 l'A buses by 2.93 and 2.25 MVA until such time as '

the entire loading in AK-06 is reevaluated.

1 1

! 6.2 Starting Voltage Analysis The listing of loads started on a LOCA signal at T=0 is summarized in Attachment 24 of the base calculation. All continuous duty motors larger than 1 HP which receive a LOCA

) start signal at T=0 are modeled in ELMS-AC with motor terminal buses. MOV motors with the largest feeder cable voltage drop are modeled with motor terminal buses. The continuous duty motors and the MOV motors modeled are summarized in Attachment 23 of the base calculation and the calculated terminal voltages i

are identified in Attachments I through 20 by a bus name which is the equipment number followed by "-D" (e.g., ISX014A-D) .

6.2.1 LOCA Block Start T=0 The first LOCA block start case analyzed is.at LOCA T=0.

This case models bus and motor terminal voltages (for critical case motors) for the locked rotor condition cn all motors and MOV (MOV) motors receiving a LOCA signal.

Results of this case are used to evaluate voltages at motor control center (MCC) buses to identify if there is a potential for contactors to drop out.

Note that when the term motor is used in this calculation, it is in reference to continuous duty motors. References to MOV motors will be specifically identified as such.

l 1

M 1

l FI LE AQ.'R 3VV lW

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 16 of 40 Attachment 6 to U-602635 LS-94-013, Page 17 of 41 6.2.2 LOCA Block Start T=0+

The second LOCA block-start case analyzed is at LOCA T=0*.

The difference between this case and T=0 case is that MOVs I which are not unseating are modeled at a current equivalent to the operator rated torque. Refer to Section 6.4 for a description of MOV modeling.

6.2.3 LOCA Block Start-Itt.yations l

)

The results of the T=0* are evaluated to assess motor i terminal voltages for large motors. A third time period l 1s selected at which time some of the medium voltage motors are up to speed. This case models some LOCA block ,

start motors as running if they have had sufficient voltage and acceleration time. The results of this case i are evaluated and additional time periods are selected for )

additional cases as required. The purpose of the multiple l cases is to confirm that at some time af ter T=0+ all l motors receive adequate voltage to allow the motor to l accelerate within an acceptable time period.

6.3 ELMS-AC Model Data Files

}

The following is a description of the various ELMS-AC data files used to perform the modeling in this calculation.

-6.3.1 The following " dummy buses" were added to the ELMS-AC files used in this calculation:

a. All 4-kV and 460-V continuous duty loads greater.than 1 hp receiving a LOCA signal, as identified in Attachment 23 of the base calculation. Motors which are modeled as starting are identified in Attachments 1 through 20 and are included in this volume.

b. 460-V intermittent duty loads (MOVs) with large voltage drops as identified in Attachment 21, Table 2.

6.3.2 Data File for T=0*

Starting:

Medium voltage motors (including 1SX0lPA, 1SX01PB, lE12-C002C, lE21-C001, and 1E22-C001), 460-V continuous duty motors, and MOV motors (see Attachments 2.1 & 12).

FILE AWR3VV.f o?

l

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A l'7 of 40 Attachment 6 to U-602635 LS-94-013, Page 18 of 41 l 1 off:

l Medium voltage motors 1E12-C002A and 1E12-C002B, and l equipment with time delays.

6.3.3 Data File for T=3s Starting:

1E21-C001 (LPCS) and 1E22-C001-(HPCS); 460-V continuous duty motors; valve motors (see Attachments 3 & 13).

Running:

1SX01PA, 1SX01PB, and 1E12-C002C Off:

1E12-C002A and 1E12-C002B and equipment with time delays.

6.3.4 Data File for T=4s Starting:

]

1E22-C001 (HPCS); 460-V continuous duty motors and MOV motors (see Attachments 4 & 14).

Running:

1E21-C001, 1SX01PA, 1SX01PB, 1E12-C002C Off:

1E12-C002A and 1E12-C002B and equipment with time delays.

6.3.5 Data File for T=4.5s Starting:

460-V continuous duty motors and MOV motors (see Attachments 5 & 15).

Running:

1E12-C002C, 1E21-C001, 1E22-C001, 1SX01PA, 1SX01PB Off:

IE12-C002A and 1E12-C002B and equipment with time delays.

rn.t Awovv. iu-

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 18 of 40 Attachment 6 to U-602635 LS-94-013, Page 19 of 41 6.3.6 Data File for T=5s Starting:

RHR Pumps A and B (1E12-C002A and 1E12-C002B), 460 V continuous duty motors and MOV motors (see Attachments 6.1 l & 16).

Running:

1E12-C002C, 1E21-C001, 1E22-C001, 1SX01PA, 1SX01PB Off:

Equipment with time delays. .

6.3.7 Data File for T=7s Starting:

460-V continuous duty motors and MOV motors (see Attachment 7.1 & 17.1 ).

Running:

All medium voltage motors and 1SX01PC.

Off:

Equipment with time delays.

6.3.8 Data File for T=13s Starting:

MOV motors (see Attachment 8.1 & 18.1).

Running:

Medium voltage motors and 460-V continuous duty motors.

Off:

Equipment with time delays.

6.3.9 Data File for Steady State fl LE TA12 R IW . IM * '

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 RE' / 3 VOL V NSED ELECTRICAL D&A 19 of 40 Attachment 6 to U-602635 LS-94-013, Page 20 of 41

Running:

Medium voltage motors, 460-V continuous duty motors, valve l motors, and time delayed equipment (time delayed equipment  ;

l includes OVC05CA, 0VC114YA, IVXO3CA, 1VX03CB, IVX03CC, IVXO6CA, IVXO6CB, and IVXO6CC) (see Attachments 9, 10.1, 10.2, 19, 20.1, & 20.2).

l Off:

All MOVs have stroked and are considered off.

6.4 Motor Operated Valves (MOVs)

At T=0, all MOVs receiving a LOCA signal are modeled at locked rotor current. However, MOV motors start de-clutched and are near rated speed when they engage the clutch (Reference 11.22).

The locked rotor current is expected to last for less than 0.5 seconds if the MOV has sufficient torque. (Reference 11.22)

At T=0* through T=13, MOV motors for gate or globe valves that are initially closed are modeled at locked rotor current since these MOVs require sufficient torque to unseat their associated valves and the motor terminal voltages at T=0* are low. The t,) assumption is that these motors will stall until sufficient voltage is available to provide required unseating torque. The identification of MOVs which are initially closed is obtained from Reference 11.30.

At T=0* through T=13, MOV motors for butterfly valves and gate or globe valves that are initially open are modeled at a current equal to that required to produce rated MOV torque (e.g., for a 25 ft-lb operator, the current equivalent to 25 ft-lb is used. This is significantly higher' than the current associated with nominal torque (5 ft-lb) which Limitorque refers to as motor full-load current). This is a conservative representation since the associated valves do not require unseating torque and are expected to operate at 20-40%

of the MOV rated torque until the valves approach the closed position (Reference 11.22). (Note: Butterfly valves are not torqued closed and will therefore not require seating torque at end of stroke). The MOVs started at T=0 have stroke times which are generally in excess of 15 seconds (Reference 11.30).

Therefore, gate and globe valves stroking closed will not approach seating torque until after all continuous duty motors have accelerated.

O F1 LC AWR $VV. IF *

• CALCULATION / REV. DEPT /DIV/SECTION SHEET l L

l 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 20 of 40 Attachment 6 to U-602635 LS-94-013, Page 21 of 41 Confirmation that MOVs receive adequate voltage is not within the scope of this calculation. This calculation establishes i the MCC bus voltages at various points in time after a LOCA signal. This data is used to establish the applicable MOV motor terminal voltage at the time the MOV is required to seat / unseat.

7. CALCULATIONS 7.1 Calculations of bils voltages and a select number of motor terminal voltages at various time intervals were prepared.

Results of these calculations are included in Attachments 1 through 7.1, 8.1, and 9 for the RAT source, and in l

Attachments 11 through 17.1, 18.1, and 19 for the ERAT. These l analyses are based upon the Off-site voltage which results in the lowest ESF 4.16-kV Bus voltage at 3870 V with all the LOCA loads at operating speed and specific MOVS still at locked rotor.

7.2 Calculation of motor terminal voltages for individual starts of continuous duty motors are included in Attachment 21, Table 4. l These analyses are based upon.4.16-kV Bus 1A1 voltage at 3832 V l (second-level undervoltage trip point).

)

7.3 Calculation of motor terminal voltages for running condition of continuous duty motors are included in Attachment 21, Table 4A.

These analyses are based upbn 4.16-kV Bus 1Al voltage at 3832 V.

7.4 Calculations of Bus voltages and a select number of motor terminal voltages for the T=13 second cases, and steady state with the offsite source voltage at the minimum expected value (per Reference 11.2) are included in Attachment 10.2, for the RAT source and Attachment 20.2, for the ERAT source.

7.5 Calculation of terminal voltages of MOV motors at a current equivalent to MOV rated torque are included in Attachment 21, Table 2. This attachment provides calculations of voltage drop from MCC buses to MOV motor terminals and documents MOV motor terminal voltages for all MOVs included in the 89-10 program.

l These analyses are based upon lowest ESF 4.16-kV Bus voltages at 3870 V for valves seating / unseating during the first three minutes after a LOCA signal and lowest ESF medium voltage Bus at 3832 V for periods after three minutes.

FI LE AW R.WV . Dir

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 21 of 40 Attachment 6 to U-602635 LS-94-013, Page 22 of 41 i

8. COMPARISON OF RESULTS WITH ACCEPTANCE CRITERIA 8.1 Analyses of Motor Terminal Voltages ai._ Acceleration Times for Continuous Duty Motors Motor terminal voltages are analyzed at various time interva's to determine the point in time at which each motor has sufficient voltage to accelerate to full speed.

8.1.1 Voltages at T=0 Seconds The T=0 case models all continuous duty and MOV motors as starting on a LOCA signal at locked rotor current.

Attachments 1 and 11 document the bus and motor terminal

l voltages at T=0 for the RAT and ERAT sources, l respectively. The bus w'tages for the RAT source are approximately 7% lower than similar bus voltages for the ERAT source. The RAT is, therefore, the limiting source for block start and will be used for the remainder of the time sequence analyses.

The MCC bus voltages at T=0 are sufficiently low to allow some MCC contactors to drop out. For conservatism, all contactors are assumed to remain operating for the purpose of the block start analyses. This approach is conservative since it increases the total block start load during the first few seconds. Dropout of some 460-V motors would more evenly distribute the total load over time and would allow T=0 loads to accelerate more quickly.

See Section 8.3 for further discussion on contactor dropout.

8.1.2 Voltages at T=0iSeconds The voltages at T=0* reflect that MOVs which are not unseating are modeled operating at currents equal to the rated torque of associated MOVs. This change,has negligible impact on MCC bus voltages. The change observed is a MCC bus voltage improvement of 1-2%.

j Voltages at terminals of 4-kV and 460-V motors are adequate to start accelerating continuous duty motors since the torque requirements of the driven equipment (fans and pumps) are relatively low at low speed (see Reference 11.8 for typical curves.). .

Medium voltage bus voltages range from approximately 73.8%

'J- to 76.0% of 4 kV (See attachments for actual values). The worst case motor 4-kV feed cable voltage drop is to the SSW 1A (1SX01PA).

f]L.E AW R3VV,Dv'

CALCUi iiOk/ RNV. DEI)T/blV/SNCTidh NHbhT 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 22 of 40 l Attachment 6 to U-602635

_ LS-94-013, Page 23 of 41

}

The medium voltage motors started at T=0 seconds include:

l HPCS, LPCS, RHR 1C, SSW lA, and SSW 1B. The voltages and I

acceleration times for three of these motors are shown below:

S ACCELERATION TIME (SEC.)

1 I

(4000 V Base) )

% Volt at T=0+ 75% V 80% V .

l i

RHR 1C (lE12-C002C) 78.2 3.3 2.4 SSW 1A (ISX0lPA) 75.0 2.5 -

, SSW 1B (ISX0lPB) 76.1 2.5 -

l Attachment 2.1 documents that RHR 1C SSW lA, & SSW 1B .  !

j receives greater than 75% terminal voltage at T=0*.

i Based on the terminal voltages at these motors at T=0+,  ;

j all three of these motors are expected to accelerate to full speed in approximately three seconds. Therefore, the ,

j RHR 1C, SSW 1A, and SSW 1B motors will be modeled as I running for the three-second case. This is based on the l

above data and engineering judgement.

l

)  !

8.1.3 Voltages at T=3 Seconds

! Bus and motor terminal voltages at T=3 se'snds for the RAT

, source are tabulated in Attachment 3.

i j The LPCS (lE21-C001) motor will be ' 2xt medium voltage j motor to reach full speed. The vo, _. profile for the LPCS motor is as follows:

4 KVBase 4 KV Base VOLTS 9 VOLTS @ ACCELERATION TIME (SEC)@

LPCS T-0 3 T- 34 75% V 80% V 100% V 77.2 84 4.00 2.17 1.085 Based on LPCS terminal voltages, this motor is expected to accelerate to full speed in less than four seconds (approximately 3.5 seconds). Therefore, the LPCS motor will be modeled as running for the four-second case.

All 460-V continuous duty motors are assumed to be accelerating during the time interval.

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CALCULATION / REV. DEPT /DIV/SECTION SHEET i 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 23 of 40 Attachment 6 to U-602635 LS-94-013, Page 24 of 41 8.1.4 Voltages at T=4 Seconds Bus and motor terminal voltages at T=4 seconds for the RAT source are tabulated in Attachment 4.

The HPCS motor will be the next medium voltage motor to reach full speed. The voltage profile for the HPCS (1E22-C001) motor is as follows:

4 KV Base 4 KV Base 4 KV Base VOLTS @ VOLTS @ VOLTS @ ACCELERATION TIME (SEC)@

HPCS T-0 3 T- 34 T- 4-4.5 75% V 80% V 100% V 75.8 82.5 85.9 4.78 3.12 1.560 Based on HPCS terminal voltages, this motor is expected to accelerate to full speed in approximately 4.5 seconds.

Therefore, the HPCS motor will be modeled as running for the 4.5 second case.

All 460-V continuous duty motors are assumed to be accelerating during this interval.

8.1.5 Voltages at T=4.5 Seconds Bus and motor terminal voltages at 4.5 seconds for the RAT source are tabulated in Attachment 5.

The primary purpose of this case is to establish bus voltage after medium voltage motors started at T=0 have accelerated and before RHR 1A and RHR 1B motors are started.

8.1.6 Voltages at T=5 Seconds Bus and motor terminal voltages at 5 seconds for the RAT source are tabulated in Attachment 6.1.

The RHR 1A and 1B motors are modeled as starting at T=5 seconds. The terminal voltages and acceleration times for these motors are as follows:

i O

f FILE 14vR3VV.tku

bALCULATIbN / REV. bEPT/DhV/SkCTION NHbE[

19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 24 of 40 ,

Attachment 6 to U-602635 LS-94-013, Page 25 of 41

) 4 KV Base VOLTS @ ACCELERATION TIME (SEC.) AT T

T=5 75% V 80% V 100 % V RHR 1A 90.1 3.3 2.4 1.25 RHR 1B 90.4 ,

t i

Based on the terminal voltages, RHR 1A and 1B motors are expected to accelerate to full speed in approximately 2 .

seconds. Therefore, the RHR 1A and 1B motors will be  :

modeled as running for the T=7 second case.

The SSW 1C pump motor (460 V) has a specified acceleration  ;

time of less than 5 seconds at 75% voltage (Reference 11.15). The following is the voltage profile (ON A 460 V .

BASE) for this motor.

VOLTS @ VOLTS @ VOLTS @ VOLTS @ VOLTS @

T = 0* - 3 T=3-4 T = 4 - 4.5 T = 4.5-5 T=5-7 t,) 59.7 68.3 71.2 78.1 73.7 2

This motor drives a pump which has a relatively onall WK ,

Therefore, the motor is expected to accelerate at a '

reduced voltage in greater than 4.5 seconds but less than 7 seconds. The SSW 1C motor will therefore be shown as  ;

running for the T=7 second case. (This is supported by calculation 19-AQ-08)

All other 460 volt continuous duty motors are assumed to be accelerating during this time interval. For conservatism no credit is taken for any of these motors having accelerated to full speed.

8.1.7 Voltage at T=7 Seconds Bus and motor terminal voltages at T=7 seconds for the RAT source are tabulated on Attachment 7.1.

J FI LE AWR WV. [x w ?

I CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 25 of 40 Attachment 6 to U-602635 LS-94-013, Page 26 of 41 i

All medium voltage motors receiving a LOCA signal have been started and accelerated by T=7 seconds. Remaining analyses will concentrate on the performance of the low voltage distribution system. (The SSW 1C motor was analyzed in the previous section and is excluded from the following analysis.)

All 460-V fan and damper motors are modeled as accelerating at the T=7 second time.

The continuous duty motors larger than 1 HP, which receive a LOCA signal and start at T=0 are modeled with individual -

motor terminal buses. The following are voltage profiles for these motors which drive fan loads.

460 V Continuous Duty Fan Motors Voltage At Time =

Motor HP Start time Min T=0+-3 T=3-4 T=4-4.5 T=4.5-5 T=5-7 T=7- 13

..) Starting at 75% V Voltage %

Division 1 OVG02CA 30 9 66.4 % 75.6 % 79.2 % 87.0 % 86.5 % 86.7 %

OVG05CA 5 5.5 75 64.2 % 73.0% 76.5% 84.0 % 83.5 % 83.7 %

1VD01CA 125 13.6 75 61.6 % 70.4 % 73.5% 80.4 % 80.0% 80.1 %

1VH01CA 15 15.8 75 63.7 % 72.9% 76.2 % 83.3 % 82.9 % 83.0 %

1W0iC 7.5 5.8 75 63.0 % 72.0 % 75.3 % 82.3 % 81.9 % 82.0 %

1WO2C 5 6.2 75 63.8 % 72.9 % 76.2% 83.4 % 82.9 % 83.0 %

1WO3C 5 6.2 75 63.3 % 72.4 % 75.6% 82.7 % 82.3 % 82.4 %  ;

1WO4C 2 12.2 75 63.0 % 72.0 % 75.3% 82.3 % 81.9 % 82.0 % )

FI LE Av.f R JVV . tw w-

CALCULATION / REV. DEPT /DIV/SECTION SHEET  ;

19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 26 of 40 Attachment 6 to U-602635 LS-94-013, Page 27 of 41

-)

460 V Continuous Duty Fan Motors Voltage At Time =

Motor HP Start time Min T=0+-3 T=3-4 T=4-4.5 T=4.5-5 T=5-7 T=7- 13 at 75% V Starting Voltage %

Division 2 OVG02CB 30 9 73 0 % 81.7 % 85.0 % 92.2 % 91.8 % 91.9 %

1VD01CB 125 13.6 75 60.2 % 68.6% 71.4 % 77.8 % 77.3% 77.5%

1VH01CB 15 15.8 75 65.5 % 74.7 % 77.7 % 84.6 % 84.2 % 84.3 % -

1VY05C 5 6.2 75 64.2 % 73.2 % 76.3 % 83.0% 82.6 % 82.7 %

1WO6C 5 6.2 75 65.3 % 74.4 % 77.5 % 84.4 % 83.9 % 84.1 %

1VYO7C 5 6.2 75 65.1 % 74.2% 77.3% 84.1 % 83.7 % 83.8%

OVG05CB 5 5.5 75 69.1 % 77.3 % 80.4 % 87.2 % 86.8 % 86.9 % '

Division 3 .

1VD01CC 75 6.4 75 60.6 % 69.2% 72.1 % 79.1 % 78.7 % 82.0%

1VH01CC 3 7.1 75 59.2 % 67.6 % 70.5 % 77.4 % 77.0 % 82.9 % ,

1VYO8CA 5 6.2 .75 58.8% 67.1 % 69.9 % 76.7 % 76.3 % 79.5% [

1VYO8CB 5 6.2 75 58.7 % 67.0 % 69.8 % 76.7 % 76.3 % 79.5%

t Fan loads will accelerate to full speed in 5 to 16 seconds at minimum rated starting voltage.

(') All but two of the fan loads listed above which receive a LOCA signal were specified to be able to start at voltages of 75% of rated (Section 3.2 and Reference 11.17).

The two motors (OVG02CA and OVG02CB) for which 75%

starting voltages were not specified have maximum brake horsepowers which are significantly less (66%) than the motor rating. These motors are therefore also expected to accelerate at reduced voltage due to the large differential between motor torque and required fan  ;

torque. (Reference ATTACHMENT 35.)

All of the motors listed above are expected to start accelerating at Tr0 due to the low required fan torque at low speed. By the time T=3 seconds, some of the motors on '

Division 1 and 2 have at least 75% voltage. The motors with higher terminal voltages are expected to reach rated speed first. As these motors reach speed, the bus and t ainal voltages improve for other motors which are still accelerating. Therefore, the terminal voltages on the last motors to accelerate will be significantly higher than the values shown for the T=7-13 time interval which models all of the above motors as starting through the T=7-13 interval. (Reference Assumptions 4.7 and 4.13.)

Motors 1D001PA, 1D001PB, and 1D001PC have minimum starting voltages of 75% .(Reference 11.32). Attachment 7.1 FI LE AWR )W. (Ku'

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 27 of 40 Attachment 6 to U-602635 LS-94-013, Page 28 of 41

) confirms that these motors receive adequate starting voltage. The manufacturers data shows that these pumps i will accelerate in less than 1 second at 75% voltage. '

8.1.8 Voltage at T=13 Seconds Bus and motor terminal voltages at T=13 seconds for the "

RAT source are tabulated in Attac' ment 8.1.

All medium and low voltage continuous duty motors have '

accelerated to rated speed for this case.

By the T=13 second time frame, the motor terminal voltage for all continuous duty motors modeled in Attachment 8.1 have recovered to greater than 90% of rated voltage. This is within the acceptance criteria for reduced motor -

voltage (Section 5.1).

HVAC damper motors which operate small hydraulic pumps are modeled as starting through the T=7 second case. These motors are2 expected to accelerate more rapidly due to the lower WK of these loads. These motors will accelerate to speed at 80% of rated voltage. An estimate of when-these motors receive adequate voltage can be made by comparing

) MCC bus voltages at the T=13 SEC time interval to bus voltages modeled in Attachment 21, Table 4. All damper motors receive greater than 80% voltage by T=13 seconds.

8.1.9 Voltage at Steady State (3870 V) RAT Bus and motor terminal voltages at T= Steady State (3870 V) for the RAT source are tabulated in Attachment 9.

The difference between this case and the T=13 second case is that all MOVs are modeled as off (stroke complete) and all time delayed continuous motors are modeled as running.

1 This condition represents the expected loading condition ,

2-3 minutes after receipt of a LOCA signal.  !

Motor terminal voltages remain.above 90% of rated voltages for all motors modeled.  !

Damper motor running voltages are calculated in Attachment 21, Table 4A based on 3832V. These calculations provide a bounding case analyses for damper motor running voltages -

at T= steady state (3870 V).

FILE AQ2R3W. [W

j _ CALCULATION / REV. DEPT /DIV/SECTION SHEET l

19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 28 of 40 Attachment 6 to U-602635 LS-94-013, Page 29 of 41

) 8.1.10 Voltages at Steady State (3832 V) RAT - Individual Motor Starts Approximations of starting voltages for individual 460-V motors (under steady state conditions following a LOCA) with 4.16-kV Bus 1A1 at 3832 V are documented in Attachment 21, Table 4. These resulte are based on MCC bus voltages identified in Attachment 10.1 and provide terminal voltages for calculated feed cable voltage drops. These calculations do not account for changes in the switchgear and MCC bus voltage during individual motor starts and are therefore only approximations.

To account for bus voltage drop during individual motor starts for medium voltage motors, the bus voltage drop can be estimated by comparing bus voltages for starting 4 vs. running for the largest medium voltage motor (1E22-CLO1). The bus voltages on 4.16kV' bus 1C1 change from 5435.3 V (85.9% of 4 kV) to 3816.8 V (95.6% of 4 kV)

(Reference Attachments 4 and 5) . Subtracting 9.7% from the 4-kV motor terminal voltages in Attachment 21, Table 4 yields greater than 75% voltage for all medium voltage motors. Therefore, all medium voltage motors receive adequate terminal voltages with 4.16-kV bus voltages at

-) 3832 V.

To account for bus voltage drop for individual 460V continuous duty motor starts, the results of T=7 (Attachment 7.1) can be utilized by adjusting the source voltage to 3832V. Subtracting 0.95% ((3870-3832]/4000) from the motor terminal voltage for T=7 results confirm motors receive greater than rated starting voltage MCC bus voltages will not be significantly affected for individual starts of damper motors. Therefore, the results of Attachment 21, Table 4 can be used directly.

All damper motor starting voltages are adequate.

8.1.11 Voltages at Steady State (3832 V) RAT - Steady State Running The calculation of running voltages (under steady state conditions following a LOCA) with 4.16-kV Bus 1C1 at 3832 V are documented in Attachments 10.1 and 21, Table 4A. Results of these calculations demonstrate that all ]

460-V motors receive greater than 90% of rated voltage i at the 3832-V level.

, i L

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19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 29 of 40 Attachment 6 to U-602635 i LS-94-013, Page 30 of 41 I f 1

8.1.12 Voltages at Steady State (Minimum Of fsite) - Steady State l Running  :

1 1

The calculation of running voltages (under steady state conditions following a LOCA) with minimum expected offsite source voltages for the RAT and ERAT are documented in Attachments 10.2 and 20.2, respectively. j These results confirm that all continuous duty motors will receive adequate terminal voltages at minimum l

offsite source voltages. Utilizing the minimum expected i l 'offsite source voltages, the ERAT results are 1-2% lower j than the RAT results.

l 8.1.13 Voltages for ERAT Source Attachments 11 through 20 document bus and motor terminal voltages for all the intervals discussed above for the ERAT source. Since the RAT source is the l limiting case for motor block starting, these attachments are not analyzed in detail, but are included for documentation.

8.2 Motor Operated Valves (MOV)

Calculated MOV motor terminal voltages (based upon bus voltages calculated in Attachments 7.1, 8.1, and 10.1) are documented in Attachment 21, Table 2. Similarly calculated MOV motor terminal voltages (based upon bus voltages calculated in Attachments 17.2, 18.2, and 20.2) are documented in Attachment 21, Table 2A. These results will be utilized in calculations prepared by IPC to determine the MOV torque switch settings.

8.3 MCC Contactors l 8.3.1 Contactor Dropout MCC contactors have a tested dropout voltage of 54-58 V l l Based on the MCC (45% to 48% of 120 V) (Reference 29) . l bus voltages at T=0 (Attachments 1 and 11), it is possible that some MCC contactors with long control circuit lengths may drop out. This would reduce bus loading and improve starting voltages for the remainder of motors being started. As MCC voltages improve, contactors which dropped out would re-energize. This l

would add additional starting load later in the start  ;

sequence. However, this is offset by improved

(,) acceleration times for loads started at T=0.

I FI LE AWR JVV, tx x:

b

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 30 of 40 Attachment 6 to U-602635 LS-94-013, Page 31 of 41

.. }

To assess the magnitude of running load which could drop out, the following information was obtained from calculation 19-AK-6, Revision 0, Attachment C, " Load Summary by Bus," by adding up all motor loads running for Source 3, Condition 2. Source 3 information is used since comparable data is not modeled for source 2.

These loads are the total bus loads prior to the LOCA l block start signal. If a portion of the T=0 block start I loads and the pre-LOCA running loads drop out, the resulting restarts would not add significant additional starting load to any of the five Class 1E unit substation transformers since they would re-energize when some T=0 loads have reached rated speed. (Note ,

that the following loads which are included in 19-AK-6 l (Condition 2) are not included in the tabulation since they are modeled as starting in this calculation: 1VY01C ,

through IVYO7C and IVY 08CA.) )

Unit Substation 1A Unit Substation 1B j MCC Motor MCCs Motor Load Load (HP) (HP)

SSW MCC 1A 0 SSW MCC 1B 0 DG MCC 1A 13.6 DG MCC 1B 8.6 3 DMPR MCC A 4.0 AB MCC IB1 14.7

,,. ]

AB MCC 1A1 70.4 AB MCC 1B2 0 AB MCC 1A2 0 AB MCC 1B3 0 AB MCC 1A3 3.0 AB MCC 1B4 0 AB MCC 1A4 0 -----

91.0 23.3 Unit Substation A Unit Substation B MCC Motor MCC Motor Load Load (HP) (HP)

CB MCC El 35.8 CB MCC F1 0.5 CB MCC E2 41.5 CB MCC F2 43.0 CB MCC G 0 CB MCC H 0 77.3 DMPR MCC B 0.4 43.9 I

FI LE AQ2R3W. lKM!

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 31 of 40 Attachment 6 to U-602635 LS-94-013, Page 32 of 41

}

Unit Substation C MCC Motor Load (HP)

AB MCC 1C1 S.9 AB MCC 1C 6.8 SSW MCC 1C 0 12.7 8.3.2 Contactor Pickup MCC contactors have a rated pickup voltage of 84 V (70%

of 120 V) (Reference 11.29).

MCC buses are required to recover to 427 volts or, above

• the value listed in calcolation 19-AJ-70 for those MCCs with less than 427 volts, after a LOCA block start to meet the acceptance criteria for maximum allowable control circuit lengths. This recovery must be achieved in approximately 12 seconds to equal the time delay on diesel-generator start with loss of offsite power. All i

I the McCs recover above the required minimum voltage.

8.4 Protective Relay / Overload Relay Evaluation l

1 ~ ~.]

8.4.1 Medium Voltage Motors l l

The following are motor terminal voltages (as a % of i rated voltage) estimated acceleration times, and i overcurrent ralay trip times for medium voltage motors started on a LOCA signal.

OC Relay Trip Time (sec)

Equipment # T-0 3 T-34 T-44.5 T-5 7 Est. Accel 75% 80% 90%

time (sec) 1E12 C002A 90.1 2 4.5 1E12- C002B 90.4 2 4.5 1E12. C002C 78.2 3 4.5 1E210001 77.2 84.4 4 5 1E22.C001 75.8 82.5 85.9 4.5 5.45 ISX01PA 74.9 3 6.7 5.7 ISX01PB 76.1 3 6.7 5.7 All medium voltage motors will accelerate to speed without tripping the associated protective devices.

b .

M LC AU2R 3VV. [O'

CALCULATION / REV. DEPT /DIV/SECTION SHEET i 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 32 of 40 Attachment 6 to U-602635 LS-94-013, Page 33 of 41

}

8.4.2 480-Volt Switchgear Motors Evaluation: 1VD01CA, 1VD01CB There are two loads at the 480-volt switchgear level that have less than 75% voltage for a portion of the acceleration time. These are the diesel generator room vent fans (1VD01CA and CB) rated at 125 hp. The starting time for the fans is estimated at 10-13 seconds (Reference Assumption 4.2). The protective device at the switchgear will trip at the reduced locked rotor current in 20 seconds. Therefore, the motor will not trip the protective' device and will accelerate the load.

The protective relaying curve for these loads is plotted and included in this calculation (Attachment 30 of the --

base calculation).

8.4.3 480-Volt Motor Control Center Motors The evaluation of MCC protective devices is outside the scope of this calculation.

.~ 8.4.4 MOV Motors I

The thermal overload relays for MOVs receiving a LOCA signal are bypassed by a LOCA signal. Therefore, thermal overloads for MOV motors are not a concern.for this calculation.

For MOVs which are not required to unseat at T=0, the motor will accelerate declutched and will be at or near rated speed when the clutch engages. These motors will experience locked rotor current for less than 0.5 seconds (Reference 11.22 of the base calculation).

Therefore, circuit breaker tripping for these loads, due l to the short locked rotor stall time (less than 0.5 seconds), are not a concern.

The following MOV motors are closed and are modeled as  !

opening (unseating) on a LOCA signal: l l

FILE AV2R3VV.Ww*

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 33 of 40 Attachment 6 to U-602635 LS-94-013, Page 34 of 41

)

MOV HP FLC LRC BREAKE RATED R SIZE TORQUE CURRENT 1E21- 2.6 7.0 38 15 19 F005 1E22- 10.3 15.1 129.3 30 75 )

F004 i 1SX173A 0.33 0.75 5.5 15 0.95 l

. ISX173B 0.33 0.75 5.5 15 0.95 MOVs 1SX173A and 1SX173B have locked rotor currents less  !

than the breaker rating and will not trip on locked rotor current.

MOVs 1E21-F005 and 1E22-F004 are started at T=0 and are

• expected to stall at locked rotor current until the MOV motors receive adequate voltage. The allowable stall  ;

times at locked rotor current prior to Type HE breaker tripping for MOVs 1E21-F005 and 1E22-F004 are calculated below:

1E 21- F005 (A) (B) (C) (D) (E) (F) AIF Time Term DRC Bx Breaker DIE Time @ %of Interval Volt Cl460 Rating %of Travel Rating  ;

0 + 3 (31 310.1 38 25.6 15 1.707797 37 0.081081 l 3-4 (1) 328.5 38 27.1 15 1.80913 24 0.041667 l 44.510.51 343.3 38 28.4 15 1.890638 19 0.026316 l 4.4-5 10.51 375.7 38 31.0 15 2.069072 16 0.03125 353.9 38 29.2 15 1.949014 20 0.1 5-7 (2) 7 13161 374.2 38 30.9 15 2.060812 16 0.375 13+ 408.6 38 33.8 15 2.250261 12 0.167 0.822314 1E 22- F004 (A) (B) (C) (D) (E) (F) Alf Tune Term DRC Bx Breaker DIE Time @ %of Interval Volt CI460 Rating %of Travel Rating 0 + 3 (31 296.4 129.3 83.3 30 2.8 7.5 0.4 3-4 (Il 222.8 129.3 62.6 30 2.1 19 0.052632 4-4.5 10.51 236.5 129.3 66.5 30 2.2 15 0.033333 4.4 510Jil 369.4 129.3 103.8 30 3.5 4 0.125 57(2) 348.8 129.3 98.0 30 3.3 5 0.4 ,

7 13 161 382.7 129.3 107.6 30 3.6 3.75 1.6 13+ 416.3 129.3 117.0 30 3.9 3 -

?.610965 l'! LE A02R3W. tx'x

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 34 of 40 Attachment 6 to U-602635 LS-94-013, Page 35 of 41

) The breaker size for 1E21-F005 is adequate if the valve starts to stroke in 12 seconds following a LOCA signal.

The motor for this MOV has a safe stall time of 15 seconds at rated locked rotor current. Therefore, a 13 second stall time at reduced locked rotor current is acceptable. (Reference 11.25)

The breaker size for 1E22-F004 is adequate if the valve unseats in approximately 7 seconds following a LOCA signal.

8.5 Second Level Undervoltage Relay Setpoint For the block start analysis, the offsite source voltages were adjusted to values which would produce voltage on the 4.16-kV buses equal to the maximum voltage of the second level -

undervoltage relay. The value for 4.16-kV Bus 1Cl (3870 V) is controlling, and was used as the basis for the adjustment.

Previous block start analyses were performed at the minimum expected offsite source voltages.

The T=13 second case (Attachment 8.1, and Attachment 18.1) reflect bus voltages which are expected at T=15 seconds since no additional motors are started between T=13 and T=15 seconds.

I The source voltages which produce 4.16-kV bus voltages of 3870 for 4.16-kV Bus 1C1 are as follows:

)

RAT 346,026 V ERAT 128,606 V These voltages are lower than the minimum expected offsite  !

l source voltages which are as follows (Reference 11.2):

RAT 348,277 V ERAT 129,720 V Steady state motor terminal voltages for all motors modeled recover to values above the acceptance criteria of 90% of rated voltage (Reference Attachment 9) with the offsite source voltage which produce 4.16-kV bus voltages of 3870 V for Bas 1C1 at T=13 seconds. The 3870 V value could be used to determine an associated maximum reset value for the Division 3 second-level undervoltage relay. This analysis was not done at the minimum reset voltage of the second-level undervoltage relay.

I With the offsite source voltage at the second level undervoltage trip point (3832), all 460-V motors receive 90% of g,) rated voltage and all MCC buses recover to an acceptable voltage (reference Attachments 10.1 and 21, Table 4A).

l l

FI LE AWR 3VV. [N.W7

l CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 35 of 40 Attachment 6 to U-602635 LS-94-013, Page 36 of 41 I Motor terminal voltages and MCC bus voltages meet acceptance criteria with source voltages at minimum expected offsite source voltage levels (reference Attachments 10.2 and 20.2).

It should be noted that for minimum offsite source voltages, the ERAT produces lower steady state bus voltages than the RAT.

9. CONCLUSIONS The conclusions in this section are based upon assumptions in Section 4.

9.1 Analyses of Motor Terminal Voltages and Acceleration Times for Continuous Duty Motors The 4.16-kV Bus 1C1 voltage of 3870 V is adequate to ensure sufficient voltage is provided to continuous duty motors which -

receive a LOCA signal to allow these motors to accelerate to full speed in an acceptable period of time.

The 4.16-kV Bus 1Al voltage of 3832 V is adequate to provide greater than 90% of rated voltages on motors under steady state conditions.

Adequate voltages are provided to all motnrs at minimum expected offsite source voltages.

9.2 Analyses of Motor Terminal Voltages for MOV Motors No direct conclusions can be drawn from the results of this calculation. The results of this calculation will be used as input to calculations performed in the IPC Program which responds to Generic Letter 89-10. This program will confirm that the MOV motor terminal voltages provide sufficient torque to seat / unseat the associated valves.

9.3 Analyses of MCC Contactors The voltages at some MCC buses at T=0 dip sufficiently low to create the potential for contactors with long control circuit lengths to dropout. At T=13 seconds, bus voltages on the MCCs have recovered sufficiently, and will energize. Relays fed from starter control transformers on these buses receive adequate voltage. Therefore, the general acceptance criteria is met for all MCCs, the analyzed bus voltages are acceptable.

l FI LE AQ2 R 3W. NN '

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 IGV 3 VOL V NSED ELECTRICAL D&A 36 of 40 Attachment 6 to U-602635 LS-94-013, Page 37 of 41 Voltages recover to above accaptable voltage levels on all MCC buses for steady state conditions (3870 V) and under steady state conditions at the relay trip (3832 V). Therefore, the second level undervoltage relay minimum trip value does support the acceptance criteria for maximum control circuit lengths.

Adequate voltages are provided to MCC buses to meet the 427V criteria for offsite source voltages at the minimum expected value 9.4 Protective Device Evaluations Medium switchgear protective device settings are adequate for a LOCA block motor start.

10. NOT USED 1

J FI LE AWR 3VV. [xw'

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 37 of 40 Attachment 6 to U-602635 LS-94-013, Page 38 of 41

11. REFERENCES 11.1 Calculation 19-AJ-10, Revision 1, " Permissible Length of Cable l for 120-Vac Control Circuits l I

11.2 Calculation 19-AK-6, Revision 0, " Auxiliary Power System Analysis" 11.3 Calculation 19-AK-7, Revision 1, " Documenting Typical Values of Motor Starting" s

11.4 Calculation 19-AN-8, Revision 3, "4160-V ESF Switchgear Busec 1A1 and 1B1 Motor Re' lay Settings" 11.5 Calculation 19-AN-9, Revision 0, "4160-V Division 3 ESF Bus 1C1 Motor Relay Settings"  ;

11.6 Calculation 19-AN-19, Revision 2 Volume B, " Functional Requirements for Second Level Undervoltage Relays at 4-kV Buses 1 A1, 1 B1, and 1C1" 11.7 Calculation 19-BD-9, Revision 1, " Safety-Related Calculation for 120-Vac Relays used to Multiply LOCA Signals" 11.8 S&L Calculation 8986-15-04, Revision 0, " Calculation for Evaluation of 460-V Motor Minimum Voltage Starting Requirements" 11.9 S&L DIT No. CP-EPED-0390, " Starting Voltages for 460-V Motors" (11-01-84) (Attachment 31) 11.10 S&L DIT No. CP-EPED-0393, " Starting Voltages for 460-V Motors" (11-01-84) (Attachment 31) 11.11 IPC DIT No. E-001, " Motor Current Ratings for Motor Operated Safety-Related Valves" (10-16-91) (Attachment 31) 11.12 S&L DIT No. CP-HVAC-3914, " Start Time of IVXO3CAs and IVXO6As" after LOCA Signal" (01-22-92) (Attachment 31) i

.)

FI LE AWR IW (KC

w. __ . .a +_ -__J. _1 e iA .me CALCULATION / IEV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 38 of 40 Attachment 6 to U-602635 i LS-94-013. Page 39 of 41 l REFERENCES (Cont'd.)

11.13 S&L DIT No. CP-PMED-3894-1, " Identified LOCA and Running Loads," 02-12-92 (Attachment 31) l l 11.14 S&L DIT No. CP-EPED-0389 (Untitled), 11-01-84 (Attachment 31) 11.15 Specification K-2828B, Shutdown Service Water Pump, Amd.

1, 05-15-79 11.16 Specification K-2900, Package Filter Units, 12-27-77 11.17 Specification K-2904, HVAC Fans, 06-22-77 11.18 Specification K-2905B, Refrigeration Equipment, 03-14-77 11.19 General Electric Company (GE) letter dated February 13, i 1976, from Mr. J. R. Basak (GE) to Mr. R. I. Gavin (S&L) l (Attachment 31) 11.20 IPC letter, dated April 20, 1976, from Mr. G. S. Green 1

, (IPC) to Mr. M. F. Lattin (GE) (Attachment 31)

) 11.21 Telephone Conversation Memorandum between Mr. Gibson of l Buffalo Forge and Mr. R. R. Beavers of S&L, " Contract K-2904 Fan 1VD01CA, Starting Time" (12-06-84) (Attachment

31) i 11.22 90 WM 094- 3EC, " Design Features and Protection of Valve Actuator Motors in Nuclear Power Plants," report by Working Group PES-NPEC-SC4.7, IEEE 90 11.23 " Standard Handbook for Electrical Engineers," Fink and Carroll, 10th Edition, Page 18-41 11.24 NEMA MG-1, Motors and Generators, 1987 l -

FI LE AWR 3W . t d >-

l

CALCULATION / IEV. DEPT /DIV/SECTION SHEET 19-AQ.02 REV 3 VOL V NSED ELECTRICAL D&A 39 of 40 Attachment 6 to U-602635 LS-94-013, Page 40 of 41 1

) REFERENCES (Cont'd.)

11.25 MOV Motor Speed Torque Curves 413018-3-FT 4-20-76 (2 FT-LB) 413018-3-FS 4-20-86 (5 FT-LB Rated at 2 FT-LB) 41308-03-EM 2-24-77 (5 FT-LB) ,

M 2734 7-25-77 (5 FT-LB) )

l M 1454 7-25-77 (5 FT-LB) 413018-3-AL 6-6-76 (10 FT-LB) 1 413018-3-AM 6-6-76 (15 FT-LB) i 413018-3-AN 7-14-70 (25 FT-LB) l M 1463 7-20-77 (25 FT-LB) l 413018-3-AP 7-21-70 (4 0 FT-LB)

SL-59450 6-9-75 (40 FT-LB)

SK-59454 6-24-75 (60 FT-LB) -

SK-59448 5-22-75 (80 FT-LB)

SK-34181 9-18-75 (150 FT-LB)

SK-34177 9-19-75 (200 FT-LB)  !

11.26 Specification K-2976, Drawing 409402-1, Size 0, 1, and 2 Overload Curve (processed 02-24-84) 40, Drawing 409403-1, Size 3 and 4 Overload Curve (processed 02-16-84)

) 11.27 Attachments 28 and 29 include references to schematics used in the evaluation of LOCA block start loads. l l

11.28 ELMS-AC Files 11.28.1 Data Files AQ2V17.001 - used for T=0+ through T=4.5 ELMS runs AQ2AV22.001 - used for T=5 through T=13 ELMS runs AQ2BV21.001 - used for T=0 ELMS runs AQ2CV17.001 - used for steady state (3870V) ELMS runs AQ2DV17.001 - used for steady state (3762V) ELMS runs AQ2EV17.001 - used for minimum offsite volt ELMS runs l

l l

F I LE AuzR WV. [u v*

CALCULATION / REV. DEPT /DIV/SECTION SHEET 19-AQ-02 REV 3 VOL V NSED ELECTRICAL D&A 40 of 40 Attachment 6 to U-602635 LS-94-013, Page 41 of 41 REFERENCES (Cont'd.)

11.28.2 Base Files The base file from 19-AK-6 (ACAP.013) was used as the initial input file for this calculation.

11.28.3 ELMS-AC Version ELMS-AC Version 2.1 was utilized in performing this calculation.

11.29 Calculation 19-AN-6, Revision 2, " Basis for Settin) the Second Level UV Relays Located at 4160-V ESF Buse: 1A1, 1B1, -

and 1C1" 11.30 Clinton Power Station ISI Program Manual, Revision 6, dated 05-25-90 11.31 Generic Letter 89-10, Scope Document, Y-97851, dated 10 91 11.32 K-2826A, " Miscellaneous Pumps - ASME Section III," Addendum 2

11.33 Calculation 19-AJ-70 Rev 1 Mcc Control Citcuit Voltage Requirements.

11.34 Calculation 19-AQ-08 Rev 0 Estimate Of SSW 1C Start Time.

.J f! ",,E AViR 3VV . t x

• 1 Attachment 7 i to U-602635 1 J

LS-94-013 Page1of2 l

[

I l

Sargent & Lundy Letter Dated June 23,1986 To: J. II. Greene l From: M. S. Zar l

l l

~ - - . . _ - _-_

. . Attachment 7 a

to U-602635 LS-94-013 P ge 2 of 2 SAnonNT & Lesny ENO3NEEHB r o u s.o E o s e e.

S S E A S T h4 o N A o t STREgf CNiCA00, 4LLINOIS e0003 8J43settooo /

t== ..o.:a....o, SLEI-20134 June 23, 1986 -

?

Project No. 4536-00 File No. 20 PTP Illinois Power Company Clinton Power Station - Unit 1 '

' y.  ;

Test Procedure PTP-AP-01 4 l Voltage Verification Test Review of Test Data .b ' j E6 l

.N Mr. J. H. Greene Manager, Nucicar Station Engineering g!

Q j Illinois Power Company j l P.O. Box 678 - M/C V-928 l Clinton, Illinois 61727 n j

I y;

l Dear Mr. Greenes Sargent i. Lundy received the subject test report and data i sheets on June 5, 1986. The strip charts were received on June 12, 1986. The results of our rovicw are tabulated g',p on Table 1 attached. .

v.v - -

Given the test results received, our review and comparison of results to the analytical models used to design the I auxiliary power system show concurrence to within acceptablo tolerances (except where noted and justified in Tablo 2). .i i

i j The calculated values are consistently lower than the test l j valuca and are thereforo conservativo.*

Yours very truly, M. S. 2ar y l MSZ:RRB mem In duplicato Senior E1cetrical y Attachments Project Enginocr  !

j Copics:

J A. L. Ruwe (1/1) i

! H. E. Daniels (1/1) #

! CPS D/R Center (1/1)

I P. L. Wattelet (1/1)

)i R. C. Heider (1/1)

D. K. Schopfer (1/1)

R. A. Witt (1/1) .

! F P. J. Schaffer (1/1)

- "~ - - M. J. Showski ...w -(1/1) . .g: j

.. m . m 72 V. E y r . J. A , n._, . . . n :? Jiv.. g,,;, _-

- }#48f ..,a.~..

j 4

% c. . . .. -

- - Nare m agnH, g,

~

i

Attachment 8 to U-602635 LS-94-013 Page1of3 Two Attached Pages From IP Calculation 19-AQ-02

1) Data Sheet Attachment 8.1 page 4

2) Data Sheet Attachment 10.1 page 1

l Attachment 8 l to U-602635 l

LS-94-013 l Page 2 of 3 l E / El'EU 19 - AQ - 02 IUJ V/I' A'ITACliM ENT 8.1 l' AGE y l SARGENT & LUNDY ELHS-AC ** HOTOR START VOLTAGE

SUMMARY

• • SOURCE : 2 COND : 4 INTERNAL BUS RUNNING BUS RATED 1 0F BUS NUMBER BUS NAME VOLTS VOLTS RATED 2 SOURCE RAT 1 344285.0 345000.0 99.8 7 RAT 1H DUHHY 9975.5 10000.0 99.8 8 RAT 1X DUHHY 6888.0 6900.0 99.8 9 RAT 1X1 OUHHY 6882.5 6900.0 99.7 10 RAT 1Y DUHHY 3895.0 4160.0 93.6 14 RAT 1Y1 DUHHY 3874.8 4160.0 93.1 17 6900V BUS 1A 6880.3 6900.0 99.7 18 6900V BUS 18 6881.5 6900.0 99.7 19 4160V BUS 1A 3867.9 4160.0 93.0 20 4160V BUS IB 3865.7 4160.0 92.9 21 4160 BUS 1A1 3868.5 4160.0 93.0 22 4160 BUS 181 3R77.9 4160.0 93.1 23 4160 BUS 1C1 (870.g 4160.0 93.0 24 480V BUS A 429.4 480.0 89.5 25 C 8 HCC El 429.0 480.0 89.4 26 C 8 MCC E2 . 428.9 480.0 89.3 1 27 C 8 HCC G 427.0 480.0 88.9 28 480V BUS 8 445.1 480.0 92.7 29 C 8 MCC F1 444.9 480.0 92.7 30 C 8 MCC F2 444.9 480.0 92.7 31 C B HCC H 443.8 480.0 92.5 32 DAMPER HCC 8 443.8 480.0 92.5 33 480V BUS 1A 429.0 480.0 89.4 34 SSW HCC 1A 425.7 480.0 88.7 35 OG HCC 1A 428.5 480.0 89.3 36 DAMPER HCC A 428.4 480.0 89.3 37 A B HCC 1A1 428.3 480.0 89.2 38 A B.HCC 1A2 428.5 480.0 89.3 39 A 8 MCC 1A3 426.8 480.0 88.9 40 A B HCC 1A4 428.2 480.0 89.2 l 41 480V BUS 18 430.8 480.0 89.8 )

42 SSW HCC 18 428.2 480.0 89.2 43 OG HCC 18 429.8 480.0 89.6 l

l 44 A B HCC 181 430.3 480.0 89.6 45 A B HCC 182 429.7 480.0 89.5 46 A 8 HCC 183 429.7 480.0 89.5 l 480.0 89.5 41 A 8 HCC 184 429.4 4s T B HCC 1H 430.8 480.0 89.8 49 480V TRF 1C 424.2 480.0 88.4 50 A 8 MCC 1C1 421.4 480.0 87.8 l

l

Attachment 8 to U-602635 LS-94-013 Page 3 of 3 l

AC Electrical Lead Monitoring systes Ver 2.10 ATTACHMENT 10.2 Cete s Sergent s Lundy gngineers CALCULATION 19-AQ-2, REV. 3 Chicago, III. PROJECT NO. 9047-20 Page 1

• • • • • Running Voltage Summary *8888 1

Utility illinois Power Company Proj. No. : 9047-20

.......................e #

N ce Number : 2

• Station s STEADY STATE - HIN Off$ lit POW (R Unit : I **************seeeeeees, j l

i Sus Running Voltage end Per Cent of Sus Reted Volts . c.

Internal Bus Reted Bus No. Volts h9 / g .*

g Cond. I Cond. 2 Cond. 3 Cond. 4 Cond. 5 2 Source RATI 345000.0

[348450.0 s '\ g l

N- 1 7 RAT IN DumY 10000.0 10096.4 101.0 % i 8 RAT IX DumY 6900.0 6978.7 -

101.1 %

9 RAT IXl DumY 6900.0 6973 3 101.1 %

10 RAT lY DUMY 4160.0 3963.5 95.3 %

14 RAT lYI DUm Y 4160.0 3944.1 94.8 %

17 6900V BUS IA 6900.0 6971.2 101.0 t ,

i 18 6900V SUS 18 6900.0 6912.3 101.0 %

i 19 4160V BUS IA 4860.0 3937.4 94.6 % >

{

20 4160V BUS IB 4160.0 3935.2

$4.6 %

21 4160 805 lAl 4160.0 3938.1 94.7 %

22 4160 BUS 181 4160.0 3942.3 94.8 1 23 4160 eUS ICI 4160.0 3940.2 /

94.7 t 24 480V SUS A 480.0 437.3 91.1 1 25 C B MCC El 480.0 436.7 98.0 t l

l

'