Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Systems > Reactor Makeup Water & Refueling Water(CH) > Flashcards

Reactor Makeup Water & Refueling Water(CH) Flashcards

1
Q

What is Reactor Makeup Water and Borated Refueling water used for ?

A

-Compensates for leakage and volume changes in the RCS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does the Reactor Makeup Water Tank header supply Non-Borated water to ?

A

-Gas Stripper
-Liquid Rad waste Evaporator
-Boric Acid Concentrator
-Solid Radwaste for resin transfers and system flushes
-Charging pumps for seal lubrication
-CVCS chemical addition Tank
-Reactor Drain Tank
-Equipment Drain Tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

When RMW is sent to blending tee where does it go after ?

A

-Volume control Tank
-Charging Pump Suction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where does RMW go after it’s sent through blending tee & Boric Acid Batch Tank Eductor?

A

-Refueling Water Tank
-CVCS Holdup Tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does Refueling Water Tank store ?

A

Borated water 4000-4400ppm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where does High Suction Line send RWT water to ?

A

-Directly to spent fuel pool
-To spent fuel pool cleanup

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where is flow sent too after it’s been sent through Boric Acid Filter & Blending Tee ?

A

-Through VCT
-Through charging pump suction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What happens once flow goes through Boric Acid Batch Tank Eductor ?

A

-RWT
-CVCS Holdup Tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What safety injection features does the RWT provide ?

A

Provides RWT water from bottom of RWT to ESF pumps(HPSI,LPSI,CS)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What’re the 3 gravity feed flow paths from RWT to provide borated water to Charging Pumps ?

A

-Bypassing BAMPs and gravity feed to Charging Pump Suction
-Bypassing BAMPs
-‘B’ train supply header to SI pumps, to alternate suction of charging pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the blended makeup from the blending tee supplied to ?

A

-Supplied to VCT via Makeup Valve
-Supplied to charging pump suction via VCT bypass valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What’re the Makeup Flow Control Valves used for ? (210Y & 210X)

A

-They’re used to regulate quantities of borated water and non borated water into the blending tee
-Necessary to minimize reactivity changes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What happens if JUST non borated water is sent to the blending tee, then to the VCT ?

A

It will dilute RCS boron concentration to control reactivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the Boric Acid Batch Tank ?

A

-Flow from either RMW pump or the BAMPs is used to educt concentrated boric acid solutions from boric acid batching tank
-Final solution is directed to RWT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is Emergency Boration from Spent Fuel Pool ?

A

SFP may also supply borated water by gravity feed suction of charging pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the Reactor Makeup Water Tank used for ?

A

-Alternate water source for safety related Aux Feedwater pumps
-Provides dilution during normal operation through reactor makeup
-High Quality water for in planet use to promote recycle dilution water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the Capacity of the RMWT?

A

-480000 gallon capacity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the RMWT temperature maintained at? How is it maintained ?

A

-Maintained above 40F by two sets of redundant 5kW heaters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Where is the RMWT vented ? Where does overflow line go to ?

A

It’s vented to atmosphere & it’s overflow line leads to CVCS Holdup Tank Sump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What provides makeup water to the RMWT ?

A

-Normal makeup water for RMWT is provided from Demon Water(DW)
-Alternate makeup is provided by Recycle Monitor Tank in the Liquid Radwaste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What’re the RMWT discharge flow paths ?

A

-Normal discharge is aligned to RMWPs into a common discharge header, then through RMW Filter
-RWMT can supply water to essential Aux. Feed water Pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What’re the RMWPs used for ?

A

-Provide makeup flow from Reactor Makeup Water Tank throughout Makeup Water subsystem
-Also used to recirculate RMWT contents through Makeup Water Filter, then through the RMWT Recirc. valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What’re the RMWPs rated for ?

A

-Rated at 165gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What’re the RMWPs power supply ? What is the normal status of RMWPs ?

A

-Powered from Non-Class 480 MCC
-One is usually running and other in standby

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the alternator select switch used for on the RMWPs ?

A

-Selects which pump is running when hand switch is operated -
-Also provides interlock which only allows one RMWP to operate at a time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What will trip the RMWPs ?

A

Pump will trip on LO-LO level in RMWT and low discharge pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

When will the RMWP Recirculation Valve be open or closed ?

A

-Opens allows recirculation of RMW back to the RMWT at low dilutions flows <20gpm
-Closed to provide full dilution flow at high demands when providing makeup water to VCT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Where is the RMWP Recirculation Valve normally operated from ?

A

-Air operated diaphragm valve is normally operated from control room

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What position is the RMW Recirc. Valve normally in ?

A

-Valve handwheel is locked in the neutral position due to fact local manipulation may impact dilution

30
Q

How is the RMW Flow Control Valve positioned ?

A

-A coriolis type sensor measure flow rate of RMW to blending tee
-A transmitter then sends signal to a flow control that positions valve to obtain flow rate preset by RO

31
Q

What position does the RMW Flow Control Valve fail in ?

A

-Pneumatically operated CCI DRAG disk stack valve
-Fails closed on loss of air or power to solenoid control valve

32
Q

What else does the Refueling Water Tank support besides providing borated water to VCT ?

A

-Supports Emergency Core Cooling system & Containment Spray subsystem by providing borated water for ESF pump operation

33
Q

What pumps do the RWT provide borated water to during accident conditions ?

A

Provides a source of borated water to HPSI, LPSI, and Containment Spray

34
Q

What does the RWT do for RCS coolant during plant cooldown ?

A

Provides borated water to charging system for makeup to RCS to compensate for contraction of RCS coolant while maintain shutdown margin

35
Q

What’re the steps to transfer RWT to the CVCS Holdup Tank ?

A

1.)BAMPs take suction from high suction line of RWT
2.)Borated water gets sent to Boric Acid Filter
3.)Then Boric Acid Makeup VCT flow control
4.)Flow Control valve will be adjust by control room to provide 125gpm through Boric Acid Batch Tank Eductor

36
Q

What is the design basis of the Refueling Water Tank ?

A

-Provide borated makeup & allow toys boric acid recycle during operation &refueling
-Provide borated water inventory for ESF pump operation
-Provide borated makeup during postulated design events

37
Q

What allows RWT to meet seismic category 1 requirements ?

A

-Concrete tank that is lined with stainless steel

38
Q

How many gallons does the RWT hold ?

A

It holds up to 750,000 gallons of water that is borated at 4000 PPM for us in RCS

39
Q

How is temperature maintained in RWT ? Where can it be vented off to ?

A

-Two heaters are provided to maintain RWT about minimum required temp
-Tank is vented to fuel building normal exhaust and has overflow line to CVCS Holdup Tank Sump

40
Q

Where is RWT makeup supplied from ?

A

-Normal makeup is provided from CVCS HUT
-CVCS HUT contents are concentrated with Boric Acid Concentrator to achieve proper boron concentration and THEN transferred to RWT via CVCS holdup pumps

41
Q

Why is Boric Acid Batching done shortly before outage ?

A

Maximizes RWT borated water volume for outage

42
Q

How many sets of level detectors does RWT have ?

A

Has three independent sets of level detection

43
Q

What does the First level detection set do ? Where is its power supplied from?

A

-Contains four class powered level detectors that are used to provide RAS and control room indications

44
Q

What is the second level detectors do ? Where are they powered from ?

A

-Stops Boric Acid Makeup pumps on a LO-LO level in RWT
-Powered by non class

45
Q

What does the third set of level detection do ?

A

-Provides level indication and alarms in Control Room
-Powered by non class

46
Q

What’re the BAMPs rated gpm & discharge pressure ?

A

-Rated at 165gpm
-150psig discharge pressure

47
Q

What’re the BAMPs power supply ? What’re the sized for ?

A

-Powered from Non-Class 480VAC MCC
-They’re sized to individually exceed capacity of three charging pumps

48
Q

When is the BAMP Recirc. Valve open or closed ?

A

-Open to allow recirculation of boric acid to RWT on low boration flows(<20gpm)
-Closed to allow full boration flow on high boration demands

49
Q

What position is the Boric Acid Makeup pump Recirc Valve normally in ?

A

Valve hand wheel is normally locked in neutral because manual operation may impact dilution

50
Q

What is the Boric Acid Makeup Flow Control Valve used for ?

A

Controls borated water flow rate:
-To the CVCS charging & letdown
-Through Boric Acid Batch Tank Eductor

51
Q

What is the Boric Acid Batch Tank for ?

A

Provides means of batching crystalline boric acid with water for adjusting boric acid concentrations in RWT & SFP

52
Q

What’re features of Boric Acid Batch Tank ?

A

-630gallom capacity only filled to 489 gallons
-Electric Immersion Heaters
-Motor Driven Mixer

53
Q

What kind of water is the Boric Acid Batch Tank filled with ? What is the Immersion Heater used for ?

A

-It’s filled with water from RMWT
-Used to raise temp of water to 155-160F to maintain concentrated Boric Acid solution

54
Q

When temp is Boric acid powder added to Boric Acid Batch Tank ?

A

When water is >155F then Boric Acid Powder is added

55
Q

How & where is the concentrated acid/water from Boric Acid Batch Tank transferred ?

A

-It’s transferred to RWT by a Boric Acid Eductor

56
Q

How does Boric Acid Eductor work ?

A

-Uses either RMWP flow or BAMPs flow as a motive force to draw boric acid solution out of tank (Vacuum Drag)

57
Q

What is Heat Tracing on the pipes used for ?

A

Used to keep boron from crystallizing causing a flow blockage in piping

58
Q

What is the Tech Spec for RWT?

A

RWT shall be operable in MODES 1,2,3,4

59
Q

What does RWT supply adequate amount of borated water for ?

A

-Cool & depressurize containment in event of a design basis accident
-Cool & cover core in event of LOCA to help reactor remain subcritical
-Enough for adequate level exits in Containment Recirc. Sump to support ESF pump operation in Recirc mode

60
Q

What limits does RWT need to reach to be considered OPERABLE?

A

-Temperature
-Boron Concentration
-Water Volume

61
Q

Who normally conducts Emergency Boration ? Who conducts Emergency Boration alignment on Loss of Power(LOP) ?

A

-Emergency Boration actions are conducted by Control Room
-AO will be responsible to operate manual valves to align Emergency Boration flow paths

62
Q

What does a FUNCTIONAL boration system consist of ?

A

-Borated water source
-Gravity Fed suction pathway
-Pump capable of being powered from an emergency power supply
-Discharge path to the RCS

63
Q

What is the Primary RCS Makeup FLEX strategy ?

A

Used FLEX RCS Positive displacement pump from the primary deployment location for pump

64
Q

Where is Primary FLEX Makeup to RCS Positive Displacement draw its suction from ?

A

-Primary suction will be from RWT drain valve

65
Q

Where is the FLEX RCS Positive Displacement Pump discharge to ?

A

-Discharge will connect to hard piping from deployment location to HPSI Injection West Mechanical Penetration Room

66
Q

Where does the Primary FLEX Makeup to RCS tie into ?

A

Ties into HPSI header includes dual class isolation valves

67
Q

What is the Alternate FLEX Makeup to RCS take its suction from ?

A

-Positive Displacement Pump & will take suction from RWT

68
Q

What draws the suction from the RWT for the alternate FLEX makeup to RCS ? Where does it discharge to ?

A

-Suction will be via hydro connection in ‘A’ charging pump
-Discharge will connect to temporary high pressure connection to the HPSI system

69
Q

Where does the FLEX Spent Fuel Pool Makeup Pump draw its suction from ?

A

Draws suction from RWT manifold in MODES 1-4

70
Q

Where is FLEX SG Makeup Pump draw its suction for ?

A

Supplying suction from CST to fill SGs

71
Q

In modes 5 & 6 during a core offload what is the primary source for SFP makeup ??

A

CST will be used as primary source for SFP makeup

Systems (62 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions