ML13312A871
| ML13312A871 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/20/1985 |
| From: | SOUTHERN CALIFORNIA EDISON CO. |
| To: | |
| Shared Package | |
| ML13303B878 | List: |
| References | |
| SO123-V-4.19, NUDOCS 8801210082 | |
| Download: ML13312A871 (23) | |
Text
NUCLEAR GENERATION SITE ENGINEERING PROCEDURE S0123-V-4.19 UNITS 1, 2 AND 3 REVISION 2 ATTACHMENT 4 CALCULATION TITLE PAGE PROJECT San Onofre Lw+6s 2 & 3 JOB ORDER NO.
N/A DISCIPLINE Mechanical
SUBJECT:
Diesel Generator Fuel Oil Tank S2(3)2421MT035(36)
Size Calculation CALCULATION NO.:
DC-M-15.6 QUALITY CLASS NO. PAGES 1
RESPONSIBLE ENGINEER (signature)l____
DATE 1120n/5 INDEPENDENT REVIEW ENG. (signature)
DATE ORIGINAL ISSUE NAME DATE SIGN.U.Rf GROUP LEADER T. Herring III 2_/-
/_s DISCIPLINE SUP. ENGR.
K.L. Johnson PROFESSIONAL ENGR.
(if required)
)_RECORD OF REVISIONS NO.
REASON FOR REVISION DATE RESP. ENGR.
IRE GL DSE PE I
I I
II I I I
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l I I II PDR ADOCK+05000361 PI PDRI PROFESSIONAL ENGINEER'S SEAL 50123-V-4.1?
SCE 26-121 REV.
10/84 C2i P
FACSI I
SHEET OF SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET
SUBJECT:
V~
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AALCUATO No.
DC~
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MADE BY DATE CH BY K. 8DATE
Purpose:
The purpose of this calculation is to conservatiyely calculate the fuel oil consumption of an emergency diesel generator for seven days of dual unit service in the event of a total loss of offsite power to both Units 2 and 3 and a LOCA on one unit.
The calculation will be used to determine if the fuel oil tanks currently installed, S2(3)2421MT035(036), have sufficient capacity to support a design change as specified by Work Request 6094.
This change would qualify one diesel generator for shared unit duty per Reg Guide 1.81.
Summary:
Sufficient capacity in one diesel generator fuel oil storage tank exists to supply the required diesel generator loads per ANSI-N-195 while the diesel is selected for shared unit duty.
The worst case accident resulted in a calculated amount of fuel oil per ANSI-N 195 of 46,964.7 gallons.
Therefore, the current tank size of 55,000 gallons and technical specification minimum of 47,000 gallons will continue to be adequate for a diesel used for shared unit service.
Referenc es :
A) S023-SPE-017, Diesel Generator Capacity Test B) S023-3-3.12, Integrated ESF Refueling Test C) Regulation Guide 1.81, Shared Emergency and Shutdown Electric Systems for Multi-Unit Nuclear Power Plants D) ANSI-N-195, Fuel Oil Systems for Standby Diesel Generators E) Work Request 6094 Calculation:
ANSI-N-195 requires sufficient class one on-site oil storage for emergency diesel generators for seven days.
The fuel oil storage capacity shall be calculated based e
upon "the diesel generator operating at the minimum DWG. NO.
cF&00 3&7-j&
MKIW. q7.7
SHEET 3 OF 7/SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET SUnJry
/
B JCT f
21 Q
?7 CALCULATION No.
DC J.O. NO.
MADE BY DATE CHK. BY DATE required capacity for the plant condition which is most limiting for the calculation of such capacity.
A 10%
margin is added to the capacity for conservatism."
Train A is used for the calculation since this train has the largest diesel load.
The Loss of Coolant Accident (LOCA) concurrent with a Loss of Offsite Power (LOOSP) on one unit plus a LOOSP on another unit is the limiting load profile a diesel will have to supply during shared unit duty.
The loss of electric power accident is described in FSAR section 15.3.2.1.
The worst case diesel loading for this accident is clear.
The worst case loading for the LOCA, which is described in FSAR section 15.6.3.3, is not clear. A diesel generator load profile for a large break LOCA with loss of electric power on one unit plus a loss of electrical power on the other unit (case 1) and a small break LOCA with loss of electric power on one unit plus a loss of electrical power on the other unit (case 2) will be calculated.
CASE I The diesel generator loading for case 1 is illustrated in figure 1. The initial load on the diesel for the large break LOCA is assumed to be ~5100 kw as determined by the calculations attached to Work Request 6094.
It is assumed the Emergency Core Cooling System (ECCS) pumps are initially at their maximum rated flow.
At 30 minutes after the initiating transient or, t=0.5 hrs., the operator secures the LPSI pump on the LOCA unit (-373 kW).
At t=1.5 hrs., the operator will connect the non-lE loads to the emergency bus which were initially disconnected on a LOOSP concurrent with a Safety Injection Actuation Signal (SIAS).
Specifically, the Technical Support Center (TSC) UPS (+10 kW), the health physics computer UPS (+10 kW) and the non-1E instrument bus UPS (+50 kW) are connected to the emergency bus on the LOOSP unit.
At t=2 hrs., the operator performs the following evolution on a LOCA unit:
2 charging pumps are secured
(-102 kW), one hydrogen recombiner (+75 kW.)-is SEO
"?--a uMEW
/77 DWG. NO.
SHEET OF 2-1/ SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET
SUBJECT:
CALCULAT,-..7'
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J.O. NO.
MADE BY DATE CHK. BY ub r DATE 1 energized, one auxiliary feedwater pump is throttled from full load (-206 kW) and one spent fuel pool pump and its associated room cooler is placed in-service
(+23.5 kW).
In addition, one spent fuel pool cooling pump and its room cooler (+23.5kw) is placed in service and throttles one auxiliary feedwater pump (-206 kW) on the LOOSP unit.
It is conservatively assumed that the heat sink'on the LBLOCA unit are the steam generators until t=6hrs. At this time, the operator will secure the auxiliary feedwater pump on the LOCA unit (-450 kW) in addition to securing the two boric acid makeup pumps (-42 kW).
At t=24 hrs., the LOOSP is assumed to have cooled down to shutdown cooling conditions. At this time the operator secures the auxiliary feedwater pump (-450 kW), 2 charging pumps (-102 kW), secures the pressurizer 1E heaters (-200 kW), and starts one LPSI pump (+373 kW) on the LOOSP unit.
This leaves a load of 3584 kW on the diesel generator for the following six days.
This load is very conservative as it is assumed that all ESF loads remain in service at their rated capacity for the entire 7 days other than those mentioned above.
The fuel consumption calculation and load profile in tabular form is shown on Table 1. The calculated fuel oil consumed is 41,324.4 gallons.
Multiplying this number by 1.10 as required by ANSI-N 145 gives 45,456.8 gal.
This is less than the current 47,000 gal technical specification limit.
CASE II The diesel generator loading for case 2 is illustrated in Figure 2 and Table 2. The initial load on the diesel is conservatively assumed to be the maximum load as determined by the calculations attached to the Work Request minus 123 kW since the LPSI pump on the LOCA unit will be initially on minimum flow. The initial load on the diesel in this case is 4977 kW.
At t=0.5 hrs., the operator again secures the LPSI pump
(-250 kW) on the LOCA unit.
I DWG. NO.,
e-E D 39-B~
MEWw al77
SHEET OF 2
SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET
SUBJECT:
AA VltFILO-
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MADEBY DATE CHK. BY DATE 2 r
At t=1.5hrs., the operator will connect the TSC UPS
(+10 kW), the health physics computer UPS (+10 kW),
and the non 1E instrument bus UPS (+50 kW) to the emergency bus on the LOCA unit. Also, the operator will connect the non 1E instrument bus UPS (+50 kW) to the emergency bus on the LOOSP unit.
At t=2 hrs., the operator again performs the following on the LOCA unit:
secures two charging pumps (-102 kW), energizes the hydrogen recombiner (+75 kW) throttles one AFW pump (-206 kW), and places a spent fuel pool cooling pump and its associated room cooler in service (+23.5 kW).
In addition, the operator will throttle the auxiliary feedwater pump (-206 kW) and place the spent fuel pool pump and its room cooler
(+23.5 kW) in service on the LOOSP unit.
At t=6hrs. the operator will secure two boric acid makeup pumps (-42 kW) on the LOCA unit.
At t=24 hrs. it is assumed that shutdown cooling will be placed in service on both units.
Both auxiliary feedwater pumps will be secured (-900 kW), two LPSI pumps will be placed in service (+746 kW), two charging pumps will be secured (-102 kW) on the LOOSP unit, and the pressurizer non 1E heaters will be secured (-200 kW) on the LOOSP unit.
Once shutdown cooling is placed in service, the HPSI pump, which is now being used for recirculation on the LOCA unit, is throttled to 90% of its design capacity (-44 kW).
In addition, it is conservatively assumed that for the remainder of the seven day period that the containment spray pump will be utilized 20% of the time for recirculation of the containment emergency sump (-266kw).
As can be seen from Table 2, the diesel then runs for the next six days at 3647 kW load.
The total fuel oil consumed is 42,461.7 gallons.
Multiplying this number by 1.10 as required by ANSI-N-195 gives 46,707.9 gallons. Again, this is less than the current 47,000 gallon technical specification minimum.
DWG. NO.
C D 397-8 NEW 8/77 (CW)
SHEET OF SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET
SUBJECT:
The.d£-V
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FUEL OIL REQUIRED FOR ROUTINE TESTING ANSI-N-195 also requires sufficient tank capacity for routine diesel generator testing. Testing the diesel at the 4700 kW rated load for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> would constitute sufficient testing capacity.
This would require an additional 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> x 60 min/hour x 5.25 gal/min = 1260 gallons.
The fuel oil required for testing need not be included in the basis for the technical specification fuel oil capacity.
The technical specifications valve should include the fuel oil required to mitigate the design basis event plus conservatisms.
MH025 DWG. NO.
SHEET OF '7 SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET SUB JECT Di e itLY-A~YO F.. a 0" 1-44 K r I' CALUIN No. DC_____
J.0. NO.
MADE BY__
DATE 2
11 9Li CMK. BY
_DATE O
TABLE 1 Diesel Generator Load Table Case-I, Large Break LOCA (1 Unit)
And Loss of Offsite Power (2 Units)
EVENT/OPERATOR ACTION TIM'E D/G LOAD LBLOCA (1 Unit) + LOOSP (2 Units) 0 Hrs 5100 kW Secure 1 LPSI Pp. (LOCA Unit) 0.5 Hrs
-373 kW 4727 kW Energize TSC UPS, HP Computer UPS, 1.5 Hrs.
+10 kW and 2 Non 1-E UPS
+10 kW
+100 kW 4847 kW Secure 2 Charging Pps. (LOCA Unit),
2.0 Hrs
-102 kW Energize 1 H Recombiner (LOCA Unit),
+75 kvJ Throttle 2 AFI Pps., Energize 2
-412 kW Spent Fuel PoolPps., Energize 2
+46 kW Spent Fuel Pool Pp. Coolers
+1 kW 4455 kW Secure 1 AFW Pp (LOCA Unit) 6.0 Hrs
-450 kW Secure 2 BAMU Pps (LOCA Unit)
-42 kW 3963 kW Secure 1 AFW Pp, 2 Charging Pps, 24.0 Hrs
-450 kW Start 1 LPSI Pp,
-102 kW v
Secure PZR Heaters
+373 kW
-200 kW 3584 kW V
FUEL COMSUMPTION FUEL LOAD RATE TIME CONSUMED 5100 kW 5.693 gpm" x
30 min 170.8 gal 4727 kW 5.280 gpm I x
60 min
=
316.8 gal V 4847 ki J 5.413 gpm x
30 min
=
162.4 gal v 4455 kW 4.979 gpm v x
240 min 1195.0 gal 3963 kW 4.435 gpm /
x 1080 min
=
4789.8 gal 3584 kw 4.015 gpm j x 8640 min
=
34689.6 gal v TOTAL
=
41324.4 gal x 1.10 45456.8 gal w Extrapolated/Interpolated based on 3.9 consumption S 3525 kW and 5.25 gpm consumption at 70O.kW.
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SHEET OF SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET
SUBJECT:
I 10rE f
rGL ATION NO DC J.O. NO.
MADE BY DATE Al CHK. BY DATE 2
TABLE 2 Diesel Generator Load Table Case-II, Small Break LOCA (1 Unit)
And Loss of Offsite Power (2 Units)
EVENT/OPERATOR ACTION TIME D/G LOAD SBLOCA (1 Unit) + LOOSP (2 Units) 0 Hrs 4977 kW
/
Secure 1 LPSI Pp. (LOCA Unit) 0.5 Hrs
-250 kW 4727 kW
/
Energize TSC UPS, HP Computer UPS, 1.5 Hrs
+10 kW and 2 Non 1-E UPS
+10 kW v
+100 kW 4847 kW Secure 2 Charging Pps. (LOCA Unit),
2.0 Hrs,
-102 kW Energize 1 H Recombiner (LOCA Unit),
+75 kW Throttle 2 AFW Pps., Energize 2
-412 kW Spent Fuel Pool Pps., Energize 2
+46 kW Spent Fuel Pool Pp. Coolers
+1 kW 4455 kW V
Secure 2 BAMU Pps (LOCA Unit) 6.0 Hrs
-42 kW
/
4413 kW Containment Spray Pp Used 20% (LOCA Unit) 24.0 Hrs
-266 kW Secure PZR Heat$ers, Secure 2 Charging
-200 kW Pps (Both LOOSP Unit), Secure 2 AFW Pps,
-102 kW Start 2 LPSI Pps., Throttle 1 HPSI Pp.
-900 kW (LOCA Unit)
+746 kW
-44 kW
/
3647 kW
/
FUEL COMSUMPTION FUEL LOAD RATE
- TIME CONSUMED 4977 kW 5.556 gpm x
30 min
=
166.7 gal 4727 kW -
5.280 gpm x
60 min 316.8 gal,/
4847 kW 5.413 gpm x
30 min 162.4 gal v 4455 kW 4.979 gpm x
240.min 1195.0 gal 4413 kW 4.932 gpm x
1080 min 5326.6 gal 3647 kW 4.085 gpm x
8640 min
=
35294.2 gal TOTAL
=
42461.71 gal x 1.10
=
46707.9 gal v
- Extrapolated/Interpolated based on 3.95 gpm consumption
@ 3525 kW and 5.25 gpm consumption at 4700 kW.
DWG, NO.
SHEET OF SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET SUBJECTuICEEL NEAEe41-te!
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S1 N 6 AS.CULATIONNO.
DC J.O. No. ______
ADE v
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ATE C H K. BY DATE 7 DA Y DIESEL CENERA TOR L OAD PROFILE CASE 1 LARGE BREAK LOCA 6
II.
43 5-1 0
4 00 4*3 0
2 a
U) 1N 00 IME (Hrs)
SHEET OF SHEETS ENGINEERING DEPARTMENT CALCULATION SHEET
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5 0
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No MADE BY1211d DATE
-CHK.
B DATE FUEL CONSUMPTION TEST TEST TITLE:
FUEL CONSUMPTION TEST - 4.12.1 PARA. D.
OBJECTIVE:
To accurately determine fuel consumption as a function of Generator Load.
DESCRIPTION OF TEST:
Fuel Consumption to be measured and recorded at 0, 25, 75 and 100% load by means of turbine flow meters and the resulting data ultimately expressed in terms of LBS/BRPH.
ACCEPT/REJECT CRITERIA:
All loads will be maintained + 5%. Engine speed shall be the speed corresponding to an output of 60 Hz, as maintained by the governor.
16 UEVISION E
SHEET 2'
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SUBJECT:
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s.LC.ofLATION No.
DC No.
MADE V
DATE CHK.
Y DATE FUEL CONSUMPTION TEST PROCEDURE:
- 1.
START THE SSDG SET AND BRING IT UP TO RATED SPEED AND VOLTAGE, NO LOAD.
- 2.
OPERATE IN TIlS MODE UNTIL THERMAL EQUALIZATION OCCURS.
- 3.
WHILE OPERATING AT RATED SPEED AND VOLTAGE, ZERO (0) LOAD, MEASURE FUEL CONSUMPTION AND COMPLETE THE RECORD SHEETS.
- 4.
INCREASE LOAD TO 25% (1175 KW)
AND COMPLETE THE ASSOCIATED RECORD SHEETS.
- 5.
INCREASE LOAD TO 50% (2350 1W) AND COMPLETE THE ASSOCIATED RECORD SHEES.
- 6.
INCREASE LOAD TO 75% (3525 KW) AND COMPLETE THE ASSOCIATED RECORD SHEETS.
- 7.
INCREASE LOAD TO 100% (4700 1W) AND COMPLETE THE ASSOCIATED RECORD SHEETS.
S.
REMOVE LOAD AND RUN AT RATED SPEED AND VOLTAGE UNTIL TEMPERATURES STABILIZE, THEN SHUT THE UNIT DOWN.
A7 1 16A REVISION E
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