Brainscape's Knowledge GenomeTM

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


See full index

Area 4 > Spray Ponds > Flashcards

Spray Ponds Flashcards

1
Q

When will a spray pond pump automatically start?

A

SIAS, CSAS, CREFAS, CREVIAS, DG running

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

How many spray pond nozzles per pond

A

320 nozzles

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

What are the holes on the bottom of some of the risers in the spray pond for?

A

Freeze protection

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

What is normal discharge pressure for an operating spray pond pump?

A

50-55 psig

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

What does the spray pond cool?

A
  • Essential cooling water heat exchanger
  • DG fuel oil cooler
  • DG JW cooler
  • DG air after cooler
  • DG lube oil cooler
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the makeup sources for spray pond?

A

TB and domestic service water

Can use Fire protection in an emergency

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

If the spray ponds are tied together and we lose all makeup sources; how long could the spray ponds supply adequate cooling?

A

26 days

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

What is the minimum Spray Pond level for Spray pond pump operation?

A

1’6”

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

What is the tech spec limit for spray pond level?

A

13’ 6”

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

At what level in the spray pond will the spray pond filter pump trip?

A

13’ 7.5”

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

At what level in the spray pond will the control room receive a low level alarm?

A

13’ 11”

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

At what level in the spray pond will the weir begin to overflow to the sump?

A

14’ 5”

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

At what level in the spray pond will the control room receive a high level alarm?

A

14’ 8”

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

If we lose makeup capabilities to the spray pond during a loss of coolant accident. What must we do at the spray ponds?

A

Open the cross tie valves (HCV-207 and HCV-208) and shutdown one train of emergency core cooling.

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

What is the maximum Spray pond motor bearing temp?

A

194 degrees F

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

What is the maximum design basis upper flow limit of the spray pond?

A

17,950 gpm

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

Design basis temperature for spray pond?

A

113 degrees F

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

Explain the re-circulation pump skid

A

3 pumps. One for each pond. And one that can be aligned to either pond.

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

What are the three flow rates that we can put hypo in?

A

.25 gpm, .5 gpm, and 10 gpm

20
Q

When do we need to verify chemical injection to the spray pond by?

A

The verify operation should be checked 2 hours before and one hour after the scheduled trigger

21
Q

When we are using the 10 gpm hypo injection path; what can’t we do? Why?

A

We can’t run a Spray pond pump. Because the high concentration of hypo can cause increased corrosion in the DG equipment and EW HX.

22
Q

What chemical that we add can’t be added unless the spray pond pump is running?

A

CCI

23
Q

What are the requirements to add dispersant?

A

Either the spray pond pump or spray pond filter pump must be running

24
Q

What are the requirements to add sulfuric acid?

A

The spray pond filter pump must be running

25
Q

How many spray headers go into the spray pond?

A

four

26
Q

When will we get a hi discharge pressure alarm on a running SP pump?

A

58 psig

27
Q

When will we get a lo discharge pressure alarm on a running SP pump?

A

47 psig

28
Q

At what spray pond temperature will we get an alarm in the CR?

A

85 degrees F

29
Q

What color in the spray pond is better to see?

A

Light blue is the best and dark green is the worse

30
Q

What are the chemicals added to the spray ponds?

A
  • Hypochlorite
  • Biocide
  • Sulfuric Acid
  • Copper Corrosion inhibitor
  • Mild Steel corrosion inhibitor
  • Dispersant
31
Q

Where do the filter backwash sump pumps discharge to?

A

CW intake structure

32
Q

How long can the DG run loaded and unloaded without the spray pond available.

A

2.6 min loaded

15 min unloaded

33
Q

What happens to the spray pond system on a lose of IA?

A

CR loses ability to see level. Have to verify locally

34
Q

How many headers and risers are in the spray pond?

A

4 headers
20 risers each
320 nozzles

35
Q

How is it determined which makeup source that we use?

A

Chemistry through the CCI.

36
Q

Where can the Spray Pond pumps be started from?

A

CR or in the class switchgear room

37
Q

What automatically starts a spray pond pump?

A
  • SIAS
  • CSAS
  • AFAS 1/2
  • LOP
  • CRVIAS
  • CREFAS
38
Q

What are the spray pond corrosion test racks used for?

A

installed to monitor the corrosive effects of the spray pond water on piping and the HX’s

39
Q

Where do the spray pond chemical injection pumps discharge to?

A

A “quill” that creates turbulent flow to mix with the recirc flow and dispense to the spray ponds

40
Q

What do the Spray pond recirc pumps do?

A

circulate water through the injection quill and back to the spray ponds. Any pump can go to either pond

41
Q

What is the essential spray ponds systems mission time?

A

30 days.

42
Q

Why is dispersant added to the spray pond?

A

Scale and deposit control

43
Q

Why is cooper corrosion inhibitor added to the spray pond?

A

Prevent corrosion. Added only when SP pump is running.

44
Q

Why is Sulfuric acid add to the spray pond?

A

pH control

45
Q

Why is Hypo added to the spray pond?

A

Biological growth

Area 4 (5 decks)

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