ML19319D685

Chapter 8 to Crystal River 3 & 4 PSAR, Electrical Sys. Includes Revisions 1-10

ML19319D685
Person / Time
Site:	Crystal River, 05000303
Issue date:	08/10/1967
From:	FLORIDA POWER CORP.
To:
References
NUDOCS 8003240666
Download: ML19319D685 (19)

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TABLE OF CONTENTS Section Page 8 ELECTRICAL SYSTE"S, 81 8.1 DESIGN BASES 8-1 8.2 ELECTRICAL SYSTEM DESIGN 8-1 8.2.1 NETWORK INTERCONNECTIONS 8-1 8.2.1.1 Reliability Considerations 8-1 8.2.2 PLANT DISTRIBUTION SYSTEM 8-2 8.2.2.1 Single Line Diagram 8-2 8.2.2.2 1 Auxiliary Transformers 8-2 8.2.2.3 6900 Volt Auxiliary System 8-3 8.2.2.h h160 Volt Auxiliary System 8-3 8.2.2.5 h80 Volt Auxiliary System 8-3 8.2.2.6 250/125 Volt D-C System 8-k O 8.2.2.7 120 ve1t 4-C Eesentie1 Service eewer Sxstem (Vital Busses) 8-u 8.2.2.8 120 Volt A-C Pegulated Power System 8-4 8.2.2 9 120Y208 Voit A-C Power System 8-k 8.2.2.10 Evaluation of the Physical Layout, Electrical Distribution System Equipment 8h 8.2.3 1 SOURCES OF AUXILIARY POWER 8-6

8. 2. 3.1 Description of Normal Power Sources 8-6 8.2.3.2 on Site Emergency Power 8-7 8.2.3.3 Power to Vital Loads and Load Shedding 8-8 8.2.3.h Reliability Considerations 8-9 8.3 TESTS AND INSPECTIONS 8-9 I

O 8-1 (Revised 1-15-68) l

LIST OF TABLES

, (At Rear of Section)

Section P_ age, ,

l Table 8-1 Table of Engineered Safeguards Susses Connected Loads 8-10 1

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LIST OF FIGURES (At Rear of Section)

Section Figure-8-1 Electrical Power Systems - Single Line Diagrams Figure 8-2 Site Transmission Map i

i j 0iJ3 8-11 (Revised 1-15-68).

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8 ELECTRICAL SYSTD!S

.O 81 ozs on 8^sts The design of the electrical systems for this nuclear plant is based on providing the required electrical equipment and power sources to insure continuous operation of the essential plant auxiliary equipment under all conditions.

8.2 ELECTRICAL SYSTE'! DESIGN 8.2.1 NETWORK INTERCOHUECTICUS The unit will generate electric power at 22 kv which vill be fed through l isolated phase bus to the unit main transformers where it will be stepped up to 500 kv transmission voltage and delivered to the substation. The substation design vill incorporate the highly reliable breaker-and-a-half scheme in both the nev 500 kv section and the existing 230 kv section, the latter being extended for the Unit 3 Startup Transformer feeder. The l5 230 kv substation is connected to the existing FPC transmission network by four circuits, two going south to Curlev and two going east to Central Florida. The nev 500 kv substation vill include one outgoing line to Central Florida and one to North Pinellas. There vill be no transformation tie between the 500 kv and the 230 kv substations at the Crystal River Generating Plant.

8.2.1.1 Reliability Considerations

\ Reliability considerations to minimize the probability of power failure due to faults in the network interconnections and the associated switching are as follows:

a. The double-circuit 230 kv transmission lines are separated by a distance sufficient to prevent a falling tower from damaging adjacent towers or lines.

b. Each 230 kv line is capable of carrying in excess of 100 per cent of the full output of Unit 1 or 2.

c. The single-circuit 500 kv transmission lines vill be separated by a distance which is sufficient to protect against contact from a conductor blev-out condition under hurricane vinds of 135 miles per hour.

d. Each 500 kv line vill be capable of carrying in excess of 100 per cent of the full output of Unit 3.

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e. The breaker-and-a-half switching arrangements in both the 230 kv and the 500 kv substations will each include two full capacity main busses. Primary and backup relaying vill be provided for each circuit along with local circuit breaker failure backup switching. These provisions will permit the following:

f v

8-1 (Revised 4-8-68) 0186 l

1. Any circuit can be switched under nomal or fault switch-ing without affecting another circuit.

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2. Any single circuit breaker can be isolated for maintenance without interrupting the power or protection to any circuit.

3. Short circuit of a single main bus will be isolated without interrupting service to any outgoing line or to the plant.

h. Short circuit failure of the tie breaker vill result in the loss of its two adjacent circuits until it is isolated by disconnect switches.

5 Short circuit failure of a bus side creaker vill result in the loss of only one circuit until it is isolated.

6. Circuit protection vill be insured from failure of the primary protective relaying by backup relaying.

With the above protective feat 1res, the probability of loss of more than one source of 230 kv power from faults is low; however, in the event of an occurrence causing loss of up to all the 230 kv remote connections, the engineered safeguards vill be supplied from one or more of the three 2 remaining sources of power (Refer to 8.2.3). 3 8.2.1.2 System Stability 3 Florida Power Corporation in cooperation with four other Florida peninsula g utility companies has run joint system load stability studies. Part of this W load study was to model loss of the largest generating plant on the combined systems. At the present time, the largest plant in the Florida peninsula system is a 1200 IG plant. Transient studies for loss of this plant have been simulated and the results indicate that the system survived the tran-sient that would occur with loss of this plant, by selectively shedding load utilizing under frequency relaying.

The program of joint transient stability studies vill continue and analysis vill be made to provide information necessary to design the automatic load shedding of systems to insure that loss of a station vill not cause the entire loss of the system.

I 8.2.2 PLAUT DISTRIBUTION SYSTFR The plant distribution system vill consist of the various auxiliary electrical systems designed to provide reliable elec1irical power during all medes of plant operatien and shutdown conditions. The systems vill be designed with sufficient power sources , redundant busses , and required switching to acecmplish this. Engineered safeguards auxiliaries vill be arranged so that loss of a single bus for any reason vill still leave sufficient auxiliaries to safely perform the required functions.

In general, the auxiliaries related to functions other than engineered safeguards vill be connected to any of the three unit auxiliary busses.

Engineered safeguards leads vill be assigned to appropriate safeguards 1 busses, each of the two groups of busses being fed by a separate diesel-engine generater.

l23 6-2 (Revised h-8-68) 0187

8.2.2.1 Single Line Diagram

(\~/3 Figure 8-1 is a single line diagran of the plant distribution system.

8.2.2.2 Auxiliary Transformers The unit will be provided with one full-size auxiliary transformer and 5 ene full size start-up transfor=er. The auxiliary transformer will be connected to the generator and will serve as the nor=al source of power to unit auxiliary busses. The start-up transformer will be connected 1 to the 230 kv substation and will serve as the normal source for engineered safeguards busses as well as provide a source of power for start-up, shut-down, and after shut-down requirements. Each of the aforementioned transformers will have two isolated secondary windings, 4

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-o u 0188 l 8-2a (Revised h-8-68) i i

one at 6900 volts and one at h160 volts for the purposes outlined in the following paragraphs. Each transformer will be capable of supplying the O- normal full load requirements of the unit. 5 8.2.2.3 6900 Volt Auxiliary System The 6900 volt auxiliary system will be designed solely for the power reactor coolant pu=p motors. This system will be arranged into two bus sections each feeding two motors. During normal operation both busses will be fed 5 from the unit auxiliary transformer. Automatic transfer to the startup transformer will take place by relay action, if a voltage failure should occur. Normal transfers initiated at the discretion of the operator for test or maintenance purposes will be " live bus" transfers; i.e. , the incoming source feeder circuit breaker vill be closed onto the running bus section and its interlocks vill trip the outgoing source feeder cir-cuit breaker which will result in transfers without power interruption.

Manual paralleling of sources which are out of phase will be prevented by the use of synchronism check relays. Emergency transfers which result upon loss of nonnal unit source will be rapid bus transfers; i.e. , the l5 outgoing source feeder circuit breaker will be trip ed and its interlocks will close the incoming source feeder circuit breaker which vill result in a transfer within less than nine cycles.

8.2.2.h h160 Volt Auxiliary System Three reactor / turbine 4160 volt busses and two 4160 volt engineered safe-guards busses vill be provided. During normal operation and following

(~'g separation from the system due to external disturbances, the reactor / turbine V busses will be fed from the auxiliary transformer. The engineered safe-guards busses will normally be fed frcm the start-up transformer. Manual transfers using synchronism check relays and automatic fast emergency transfers will be as described for the 6900 volt system in Section 8.2.2.3.

The engineered safeguards busses vill have, in addition to transformer sources, two diesel-engine generator sources. These generators vill be sized on the basis of either one being capable of carrying the engineered safeguards load for .n MHA. The diesel-engine generators will automatically start under conditions as described in Section 8.2.3.1.

8.2.2.5 h80 Volt Auxiliary System The h80 volt auxiliary system vill be arranged into four bus sections 5 for the unit plus two for engineered safeguards. Each bus section will be fed from a separate load center transformer which will be connected to one of the five 4160 volt bus sections. Various 480 volt motor control centers will be located throughout the plant to supply power to equipment within the related area. Each motor control center vill be sep-arately fed from the k80 volt auxiliary system. Connections and switching will be arranged to prevent loss of more than one control center from which engineered safeguards auxiliaries will be fed and redundant auxiliary feeders arranged so that such loss will still leave an adequate number oper-ational.

O 8-3 (Revised h-8-68) h)@g r

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8.2.2.6 250/125 Volt D.C System The 250/125 volt d-e system vill be U. ,igned to provide a source of reliable continuous power for d-c pump me, ors, control, and instrumentation. In gen-eral, d-c motors vill be rated ' 4 volts and control circuits vill be fed 125 volts d-c.

The 250/125 volt d-c system vil. consist of two isolated bus sections, each supplied by a battery and battery chargers. All engineered safeguards switch-gear busses and control busses vill be fed from both battery sources through silicon diodes to insure continuous control power even if one battery or d-c bus fails. Manual tie circuits vill be provided to permit one battery to back up the other. A spare 125 volt d-c battery charger vill be provided for bacr.up.

8.2.2.7 120 Vo;t A-C Essential Service Power System (Vital Busses)

The 120 volt a-c essential service power system vill be designed to provide a reliable source for essential power, instrumentation, and contral loads under all operating conditions. The system vill consist of four bus sections, each supplied from a separate static inverter. Tie circuits vill be provided 1 to the 120 volt a-c regulated power system described in 8.2.2.8 for backup power. The static inverters will be supplied normally from the h80 volt a-c system with an uninterrupted transfer to a 125 volt d-c battery source on loss of the normal supply.

8.2.2.8 120 Volt A-C Regulated Power System A 120 volt a-c regulated power system vill be provided to supply instru-mentation, control, and power loads requiritig regulated 120 volts a-c power.

It vill consist of distribution panels and regulating transformers fed from motor control centers.

8.2.2.9 120Y208 Volt A-C Power System A lov voltage 120Y208 volt a-c power system vill be provided to supply instrumentation, control, and power leads requiring unregulated 120Y208 volts a-c power. It will consist of distribution panels and transformers fed from motor control centers.

8.2.2.10 Evaluation of the Physical Layout , Electrical Distribution System Equipment The physical locations of electrical distribution system equipment vill be such as to minimize vulnerability of vital circuits to physical damage as a result of accidents. The proposed locations are as follows:

a. The unit auxiliary and startup transformer vill be located out of doers , physically separated from each other. Lightning I arrestors vill be used where applicable for lightning protection.

All transformers vill be covered by automatic water spray systems I to extinguish oil fires quickly and prevent the spread of fire.

Transformers vill be well spaced to minimize their exposure to fire and mechanical damage. l O l 8 h (Revised 1-15-68)

,f-) b. The unit auxiliary 6900 vclt switchgear, kl60 volt switchgear,

(_,/ and 480 volt switchgear vill be located in areas so as to minimize 2xposure to =echanical, fire , and water damage. This equipment will be properly coordinated electrically to permit safe operation of the equipment under nor=al and short circuit conditions,

c. The engineered safeguards kl60 volt switchgear and h80 volt load centers vill be physically separated from each other and from the unit auxiliary switchgear and located in a Class I structure so as to further minimize exposure to mechanical, fire, and water damage. This equipment vill be coordinated electrically to permit safe operation under normal and short circuit conditions,

d. The h80 volt motor control centers will be located in the areas of electrical load concentration. Those associated with the turbine-generator auxiliary system in general vill be located below the turbine-generator operating floor level. Those associated with the nuclear steam supply system vill be located in the Auxiliary Building. Motor control centers vill be located in areas so as to minimize their exposure to mechanical, fire, and water damage.

e. The plant batteries and associated chargers and inverters vill be in separate rooms and in a Class I structure to minimize vulnerability to damage from any source.

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f. Within practical limits , nonsegregated, metal-enclosed h160 volt busses vill be used for all major bus runs where large blocks of current are to be carried. The routing of this metal-enclosed bus will be such as to minimize its exposure to mechanical, fire, and water damage.

g. The application and routing of control, instrumentation, and power cables vill be such as to minimize their vulnerability to damage from any source. All cables will be applied using conservative margins with respect to their current carrying capacities, insulation properties, and mechanical construction.

Cable insulations in the Reactor Building vill be selected so as to minimize the harmful effects of radiation, heat, and humidity. Appropriate instrumentation cables will be shielded to minimize induced voltage and magnetic interference. Wire and cables related to engineered safeguards and reactor pro-tective systems will be routed and installed in such manner as'to maintain the integrity of their respective redundant channels and protect them frcs physical damage.

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I 019, 8-5

i 8.2.3 SOURCES OF AUXILIARY 8.2.3.1 Description of Normal Power Sources There vill be two sources of power available to Unit No. 3. Each source vill have various degrees of redundancy and reliability as outlined below:

a. The start-up transfomer vill serve as the nomal source l for engineered safeguards auxiliaries. Power to this trans-fomer will be provided from any one of four 230 kv transmission circuits or from any one of the existing Units 1 and 2. Both Units 1 and 2 are designed to continue in operation following load re,)ection from 100 percent load down to unit auxiliary load without a turbine trip.

The start-up transfomer vill be sized to carry full load auxiliaries of the unit. The start-up transfomer vill serve as a source of power except when:

1. There is a 230 kv system blackout, and neither Unit 1 nor Unit 2 is running.

2. A catastrophic vreck destroys both busses in the substation.

3. The start-up transfomer fails.

4. The start-up transfomer connection to the 230 kv substation fails.

b. As described in 8.2.2.2, normal power supply to unit auxiliary loads other than safeguards vill be provided through the unit auxiliary transfomer connected to the generator bus. This transformer vill be sized to carry unit full load auxiliaries and can therefore serve as an alternate power source for the safeguards busses. Transfer to this source vill be accomplished 2 manually only.

Upon separation of the unit from the 500 kv system with no in-plant emergency, neither the reactor nor the turbine vill be tripped. Load vill be abruptly reduceA to the unit auxiliary demand, and the unit will be continued in service. Automatic provisions for abrupt loss of load are covered in section 7.2.3.4 The auxiliary transforrer vill thus serve as a cource of power except when:

1. The nuclear generating unit is not running.

2. There is an equipment failure which prevents continued operation of the turbine-generator.

0192 0 8-6 (Revised h-8-68)

1-8.2.3.2 On Site Emergency Power 2 O Two automatic, fast start-up diesel generators vill be provided as emergency power sources for engineered safeguards loads.

These generators vill be sized so that either one can carry the required engineered safeguards load. A preliminary estimate of the rating of each emergency generator is 2850 kv.

One emergency generator vill feed each of the engineered safeguards 4160 volt busses. The units are to be located in an annex on the opposite side of t.he building from the 230 kv substation and transfor=ers, and vill be mounted to minimize the likelihood of mechanical, fire, or water damage.

5 Sufficient fuel vill be stored to allow one unit to operate at full power for seven days. In the event that packaged units are used, fuel l5 storage at the units vill be sufficient for one to three hours full load operation. Level in the tanks will be automatically maintained frca the main storage tank using a motor driven pump with each unit.

Each diesel generator the following incidents:is to be started upon the occurrence of any of

1. Initiation of safety injection operation.

Reactor building high pressure.

3. Loss of voltage on the kl60 volt engineered safeguards bus with which the emergency generator is associated.

In addition, upon loss of the kl60 volt bus voltage, the unit will be autor.d ically placed on the line.

The sequence to accomplish this following the starting signal vill be as follows:

Step 1. Automatic tripping of all breakers on the bus.

Step 2. After the unit comes up to speed and voltage, the emergency generator breaker will auto-matically close.

Step 3. Manual starting of equipment as required for safe plant operation.

If there is a requirement for safeguard system operation coincident with the Aoss of voltage on the kl60 volt bus, step 2 vill be auto-matically followed by the sequential starting of safeguards equipment.

G 8-7 (Revised h-8-68)

1 In the event one emergency generator does not come on the line, the starting sequence by components associated with this generator and bus vill be blocked.

2 g The sequential loading of each diesel-engine generator wit a safeguard auxiliaries vill be accomplished as quickly as possible by the use of 1 a high speed excitation system and by starting loads in blocks within the diesel-engine generator capability of accepting them. Timers vill be used to (1) preveny a race with the next auxiliary in the chain, and (2) initiate tripping of a component which fails to start within a reasonable time, thereby preventing the sequence from hanging up.

Starting of a diesel-engine generator vill take 7-1/2 to 10 seconds, depending upon the maaufacturer. From a dead start, the high pressure and low pressure reactor injection syste=s vill be in operation within 1 25 seconds. The design criterion is 60 seconds for the total elapsed time from the occurrence of a LOCA to all automatic safeguards equip-ment running.

8.2.3.3 Power to Vital Loads and Load Shedding All of the power sources vill supply power to the h160 volt bus sections which serve the engineered safeguards auxiliaries and reactor protective syste=s. The engineered safeguards auxiliaries and reactor protective systems vill be arranged so that a failure of any single bus section vill not prevent the respective systems from fulfilling their protective fune-tions. On loss of their normal source of power, a start-up transformer, 1 the respective diesel-engine generator vill automatically start, the 2 bus vill automatically be cleared and the emergency generator breaker vill close. In the absence of safeguards signals only the h160-h80 V transformer circuit breaker will automatically reclose.

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0194 0

8-8 (Revised 2-7-68)

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J 8.2.3.h Feliability censiderations Upon a total system blackout , there vill be four re=aining power sources, '

i.e. , the nuclear unit and two fossil fueled units and the diesel-engine generators. The coincident failure of all remaining power sources and a system blackout is incredible. However, should this cucur, safe shutdown cooling without electric power vill be acce=plished as described in 14.1.2.8.3.

8.3 TESTS AND INSPECTIONS Control of the diesel-engine generators vill be provided on a panel located in the control room. Provisions vill be made in the control panel to man-ually initiate a fast start of any of the generators with closure of the associated air circuit breakers connecting the generator to the 4160 volt 2 engineered safeguards auxiliary bus. Testing of this system may be done by the control room operator at his convenience any time the diesel gen-erator units are not otherwise running.

c a 230 kv and 500 kv circuit breakers vill be inspectea, maintained, and tested as follows:

a. Transmission line circuit breakers will be tested on a routine b asis . This can be accomplished on the breaker-and-a-half scheme without removing the transmission line from service.

() b. Generator circuit breakers can be tested with the generator in service.

Transmission line protective relaying vill be tested on a routine basis.

4 Generator protective relaying vil. be tested when the generator is off-line. The kl60 volt circuit breakers , motor starters , and associated equipment vill be tested in service by opening and closing the circuit breakers or starters so as not to interfere with operation of the plant.

Emergency transfers to the various emergency power sources will be tested on a routine basis to prove the operational ability of these systems.

The ungrounded d-c system vill have detectors to indicate when there is a ground existing on any leg of the system. A ground on one leg of the d-c system vill not cause any equipment to malfunction. .1 DELETED Grounds vill be located by a logical isolation of individual circuits 2

connected to the faulted system.

Motor operated valves vill be tested in service so as not to interfere with the operation of the plant. Motor operated isolating valves will be tested when the unit is off-line.

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0l95-8-9 (Revised 4-8-68) l

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( Table 8-1 1

TABLZ OF ENGINEERED SAFEGUARD BUSSES CONNECTED SAFEGUARD LOADS 2 5

h160 Volt Engineered dareguard Bus A 3A Decay Heat Pump 400 hp 3A Makeup Pump 700 hp 3C Makeup Pump (Nor=al-Use 3A or 3B Cir. Bkr. ) 700 hp 3A Reactor Building Spray Pump 250 hp 3A Nuclear Services Sea Water Pump 250 hp 3A Nuclear Services Closed Cycle Cooling Water Pump 250 hp 3 Emergency Feed Water Pu=p 400 hp h160 Volt Engineered Safeguard Bus B 3B Decay Heat Pu=p h00 hp 3B Makeup Pump 700 hp 3B Reactor Building Spray Pump 250 hp 3B Nuclear Services Sea Water Pump 250 hp 3B Nuclear Services Closed Cycle Cooling Water Pump 250 hp 3C Makeup Pump (Alternate-Use 3A or 3B Cir. Bkr.)

g h80 Volt Ei.f neered i Safeguard Bus A

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3A Reactor Building Ventilator 200 hp 3C Reactor Building Ventilator (Normal) 200 hp 3A Control Building Chiller 100 hp 3A Control Building Ventile ion Supply Fan 30 hp 3A Control Building Ventilation Exhaust Fan 20 hp 3A Battery Charger 15 hp 3B Battery Charger 15 hp 3E Battery Charger 15 hp 3A Rod Drive Power Supply 20 hp 3A Instrument Air Compressor 60 hp 3A Spent Fuel Cooling Pump 40 hp 3A Boric Acid Pump 2 hp 3A Decay Heat Pump Sea Water Pump 150 hp 3 RC Pump Seal Isolation Valve MU-V12 (Inside RB) 3A Letdown Isolacion Valve MU-V2A (Inside RB) 3 Pressurizer Sample Line Isolation Valve CA-V1 3 Reactor Building Sump to Waste Disposal Isolation Valve 1/2 Control Building Lighting 20 kw 3A Alternate Building Lighting 3 Decay Heat Suction Valve (Normal Shutdown)

Isolation Valve DH-V3 3 Reactor Coolant Sample Line Isolation Valve CA-V3

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('->T Table 8-1 0196 8-10 (Revised h-8-68)

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Table 8-1 (Cont'd) 1 k80 Volt Engineered Safeguard Bus B 2 3B Reactor Building Ventilator 200 hp 3C Reactor Building Ventilator (Alternate) 200 hp B Control Building Chiller 100 hp 3C Battery Charger 15 hp 3D Battery Charger 15 hp 3F Battery Charger 15 hp 3B Boric Acid Pump 2 hp 1/2 Control Building Lighting 20 kw 3B Spent Fuel Cooling Pump 40 hp 3B Instrument Air Compressor 60 hp 3B Rod Drive Power Supply 20 hp 3B Decay Heat Pump Sea Water Pump 150 hp 3B Decay Heat Pump Closed Cooling Water Pump 75 hp 3 centrol Rod Drive Seal Isolation Valve MU-Vll (Inside RB) 3B Letdown Isolation Valve MU-V2B (Inside RB) 3B Control Building Ventilation Supply Fan 30 hp 3B Control Building Ventilation Exhaust Fan 20 hp 3C Boric Acid Pump 2 hp 3B Alternate Decay Heat Suction Valve 3 Intemediate Cooling water Isolation Valve IC-V3 3 Reactor Building Purge Inlet Valve 3 Reactor Building Purge Outlet Valve h

250/125 Volt d-e Bus "A" *

"A" h160 V. Engineered Safeguards Switchgear Control Bus "B" 4160 V. Engineered Safeguards Switchgear Control Bus "A" 480 ". Engineered Safeguards Switchgear Control Bus "B" 480 V . Engineered Safeguards Switchgear Control Bus "A" Static Inverter "B" Static Inverter 250/125 Volt d-c Bus "B" *

"A" 4160 V. Engineered Safeguards Switchgear Control Bus "B" kl60 V. Engineered Safeguards Switchgear Control Bus "A" 480 V. Engineered Safegureds Switchgear Control Bus "B" k80 V. Engineerea 0.!:;: ri: Ovitchgear Control Bus "C" Static Inverter l "D" Static Inverter 3 Emergency Feed Pump Turbine Bearing Oil Pump (d-c) l[l

• NOTE: d-c Busses "A" and "B" list only Engineered Safeguards items.

Table 8-1 (Cont'd)

O 8-11 (Revised h-8-68) g7

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3 Table 8-2 E4ERGENCY DIESEL-GENERATOR LOADING SEQUENCE Loading Expected Sequence Number Description Load (total)

Block 1 1 Makeup Pump 700 hp 1 Decay Heat Pu=p 400 hp Miscellaneous Loads (Emergency lighting, valves, 150 hp etc.)

Block 2 1 Nuclear Services Sea Water Pu=p 300 hp l5 1 Nuclear Services Closed Cycle Cooling Pump 250 hp 1 Reactor Building Ventilator 200 hp Miscellaneous Loads 150 hp 1

Block 3 1 Reactor Building Spray Pump 250 hp i 1 Decay Heat Sea Water Pump 150 hp l5 I

1 Decay Heat Closed Cooling Pump 75 hp 1 Reactor Building Ventilator 200 hp l Miscellaneous Loads 150 hp 2975 hp 5 h I

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0199 0 8-13 (Revised k-8-68)

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