Containment & Containment Systemsy

Section 5.3-5.6

Section 5.3 Objectives1. State the purpose of the containment.

2. Briefly describe the function of the following:

a.Containment linerb.Primary shield wallc.Secondary shield walld.Refueling canale.Containment sumpsf. Containment recirculation sumpg.Containment hydrogen analyzer

Section 5.3 Objectives3. Briefly describe the methods of monitoring the

containment environmental conditions.

Purposes Obj 1• Provide a barrier to prevent the escape of

radioactivity during normal and accident conditions,

• Provide protection against internally and/or externally generated missilesexternally generated missiles,

• Provide biological shielding during normal and accident conditions,

• Provide Seismic Category I supports for the reactor coolant and its associated systems.

Fig 5.3-1

Fig 5.3-6

Fig 5.3-8

Fig 5.3-3

Containment and Recirc Sump Relationship

Containment Environment Monitoring• Pressure• Temperature• Humidity • Radiation• Hydrogen Concentration

CONTAINMENT TEMPERATURE, PRESSURE, AND COMBUSTIBLE

GAS CONTROL

Section 5.4Section 5.4

Section 5.4 Objectives1. State the purposes of the containment

ventilation systems.2. List the signals that automatically initiate

isolation of the purge supply and exhaust systems.

3. State the purposes of the containment spray system.

4. List the signals that automatically initiate the containment spray system.

5. State the purposes of the containment combustible gas control systems.

Purposes Obj 11. To control containment temperature and

pressure during normal operations.2. To protect the containment barrier and to

minimize the leakage of radioactivity to the environment following an accident by reducing the containment temperature and g ppressure.

3. To remove hydrogen from the containment atmosphere to prevent explosive mixtures.

4. To remove radioactive iodine from the containment atmosphere after a LOCA.

Figure 12.3-1

8150 CFM

TE

2050 CFMEACH

TE

375 CFMEACH

1500 CFM

Figure5.4-5

PressurizerC

ompartm

ent&Incore

Instrume

PRESSURIZERCOMPARTMENT

INCORE INSTRUMENTSWITCHING ROOM

entSw

itchingR

oomC

ooling

0199-3

Figure5.4-6

ReactorC

oolantPum

pC

oolingS

ystem

REACTORCOOLANT

PUMP

STEAMGENERATOR

BDD

BDD

42000 CFMEACH PS

TE

0199-3

Figure 5.4-7

CONTAINMENT AIR COOLER SYSTEM

TE

VC-201ATE

TE

VC-201BTE

TE

VC-202ATE

TE

VC-202BTE

TE

TE

VC-203ATE

TE

VC-203BTE

TE

VC-204ATE

TE

VC-204B

EL 205 FT

EXHAUST

ELECTRIC

ELECTRICHEATING ELEMENTS

ELECTRICHEATING BANKS

COOLINGAIR

SKID

FLOWORIFICE

AIR INTAKE

HYDROGEN MIXING SYSTEM

2500CFM

EACH

CONTAINMENT AIR COOLERSCONTAINMENT AIR COOLERS

EL 205 FT

Containment Spray System Obj 3• Limits the peak containment pressure below

its design pressure of 60 psig following a worst case LOCA.

• Reduces the concentration of fission product iodine in the containment atmosphereiodine in the containment atmosphere following a LOCA.

• Keeps spray entrained iodine in the containment recirculation sump while maintaining the sump water at a basic pH.

CONTAINMENT PENETRATION AND ISOLATION SYSTEMS

Section 5.6Section 5.6

Learning Objectives1. State the purposes of the system.2. Define the following:

a. Deletedb. Containment Isolation Phase A

C t i t I l ti Ph Bc. Containment Isolation Phase B3. List the signals that initiate phase A and

phase B isolation.

Purpose Obj 1• To isolate non-essential containment

penetrations during accident conditions.

• To provide leak-tight mechanical and electrical containment penetrationselectrical containment penetrations.

Containment Penetration Types• Electrical Penetrations

• Piping Penetrations

• Equipment and Personnel Access• Equipment and Personnel Access Hatches

• Fuel Transfer Penetration

Fig 5.6-3

FUELBUILDING

FUELTRANSFER

VALVEFUELTRANSFER

CANAL

BELLOWS

CONTAINMENTBUILDING

1/4" STEELLINER

COMPRESSIBLEMATERIAL (2")

FUEL TRANSFER TUBE

S.S. SLEEVE

BLANKFLANGE

REFUELING CAVITY

Figure5.6-4

FuelTransferTube

LEAD IMPREGNATEDSILICONE FOAM

RECESSCOMPRESSIBLEMATERIAL (3")

0796-325.2-4

Initiation Signals Obj 3• Phase A Isolation: Initiated by any Safety

Injection actuation signal or manually from the control room. (CISA)

• Phase B Isolation: Initiated by a hi-hiPhase B Isolation: Initiated by a hi hi containment pressure signal or manually from the main control board. (CISB)

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