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Module 8 Plant Service Systems > P43 TBCW > Flashcards

P43 TBCW Flashcards

1
Q

What’s the power supplies for TBCW pumps?

A

“A” 13AD
“B” 14AE
“C” 14AE
“D” 11DF

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2
Q

When will the standby AC TBCW pump auto start?

A

<45psig discharge pressure

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3
Q

When will the DC TBCW pump auto-start? Why?

A

When the DC seal oil pump starts to prevent hydrogen fire with seal oil over heating

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4
Q

How long will DC TBCW pump run?

A

At least one hour or until manually secured

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5
Q

When will P43-F289 valve auto closes?

A

LOP or F155A AND F155B is not full closed

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6
Q

When will F289 valve auto open?

A

Hand switch in open AND LOP(LSS B) clear and F155A and F155B is full closed

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7
Q

How does F289 fail?

A

Closed

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8
Q

When will the F155A and F115B auto open?

A

LOP with no LOCA

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9
Q

When will they auto close?

A

LOCA

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10
Q

How does F513 PSW temp control valve fail?

A

Open

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11
Q

How does surge tank level control valve F520 fail?

A

Closed

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12
Q

How do all Temperature control valves fail?

A

Open

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13
Q

What’s the TBCW loads with temperature control valve?

A 
RFPT lube oil coolers
MTLO coolers
EHC coolers
Primary water coolers
Generator Hydrogen coolers
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14
Q

What’s the purpose of TBCW?

A

Cools potentially systems in Turbine, radwaste, and water treatment building

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15
Q

When starting a pump with No other pumps running, what position should discharge valve be in and why?

A

Closed to protect the thrust bearing

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16
Q

When securing a pump, what position should discharge valve be in? and why?

A

Closed to prevent check valve slam

17
Q

What’s the purpose of the surge tank?

A

NPSH, expansion, surge volume

18
Q

Where does the makeup water for the chem-add tank come from?

A

TBCW water

19
Q

How many pumps starts are allowed from cold start?

A

2

20
Q

How many pumps starts are allowed from operating temp?

A

1

21
Q

How does P43-F289 fail?

A

Closed

22
Q

What is the power supply?

A

13B22

Module 8 Plant Service Systems (5 decks)

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