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LOIT Systems 2018 > RD: Radioactive Drains > Flashcards

RD: Radioactive Drains Flashcards

1
Q

What is the power supply for the RD pumps?

A

NH

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2
Q

What is the Safety Basis for the RD system?

A

Not Interconnected w/o check valves

Each ESF Sump has backflow check valves

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3
Q

RD pumps are _______ % capacity.

A

100%

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4
Q

How are the RD pumps physically attached to their sumps?

A

They are hung from the sump cover plate and protected by a pipe.

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5
Q

Where does the RD System ultimately send any water it collects?

A

To the Liquid Radwaste System

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6
Q

High level in a RD sump starts the _______ pump.

A

Lead

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7
Q

High-High level in a RD sump starts the _______ pump.

A

Lag

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8
Q

Lo-Lo level in a RD sump does what?

A

Secures all operating sump pumps

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9
Q

____ supplies lube water to the RD Sump Pumps.

A

DW

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10
Q

To where do the Reactor Cavity Sump Pump discharge?

A

To the Containment East Sump

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11
Q

How many pumps does each Containment Sump have?

A

1

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12
Q

What must be open to start a Containment Sump Pump?

A

UV-23

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13
Q

What is the time delay associated with an auto start of a Containment Sump Pump?

A

3 minutes after receipt of a High Level

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14
Q

What type of valve is RDA-UV-23?

A

MOV

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15
Q

What type of valve is RDB-UV-24?

A

AOV

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16
Q

What will auto close the Containment Isolation Valves for the RD System?

A

CIAS

17
Q

What are the Control Room alarms for the Reactor Cavity Sump and the Containment Sumps based on?

A

Sump fill rate and sump pump run time.

18
Q

What will bring in the CNMT SUMPS TRBL alarm?

A 
Reactor Cavity Level Hi-Hi
Containment Sump Level High-High/Lo-Lo
Pump not in AUTO
Excess Run Time 
Excessive Leakage (sump pumped twice in an hour)
19
Q

What will bring in the CNMT SUMPS EXCESS LEAKAGE alarm?

A

Containment Sumps - sump pumped to Low Level twice within one hour (equates to > 1 gal/min leakage)

20
Q

What does TechSpec 3.4.14 say about RCS Leakage?

A

No Pressure Boundary Leakage
NTE 1 gpm unidentified leakage
NTE 10 gpm identified leakage
NTE 150 gpd primary to secondary leakage

Modes 1 through 4

(RCP Seal Bleedoff is not included in any category)

21
Q

What does TechSpec 3.4.16 say about RCS Leakage Detection?

A

That you need all 3 Containment Sump monitors and RU-1.

LOIT Systems 2018 (33 decks)

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