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1. Systems > Condensate > Flashcards

Condensate Flashcards

1
Q

What is the tech spec minimum of the CST?

A
  • 182,000gal
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2
Q

What are the HWP auto starts?

A
  • Low # at:
    130# (U1)
    110# (U2)
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3
Q

What are the HWP trips?

A
  • Overload/Overcurrent
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4
Q

What powers the HWPs?

A
  • 1/2D North
  • 1/2A Middle
  • 1/2C South
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5
Q

What are the CBP auto starts?

A
  • Low pressure at 325#
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6
Q

What are the CBP trips?

A
  • Overload/Overcurrent
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7
Q

What is the flow capacity of the LP #1 heaters?

A
  • Each string supplies 50% flow (We have 3)
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8
Q

What is the flow capacity of the LP #2-4 heaters?

A
  • Each string supplies 80% flow (we have 2 strings) with a bypass that can provide 20% flow via CRV-224
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9
Q

What does CRV-55 do for you?

A
  • Allows makeup from the CST to the Condenser Hotwells (Sensed on A and C hotwell lvl)
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10
Q

What does CRV-155 do for you?

A
  • Allowd for excess condensate from hotwells to go back to the CST (Sensed on A and C hotwell lvl)
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11
Q

What does CRV-224 (2,3,4 Heater bypass valve) do?

A
  • Allows having a heater string out and provides 20% flow
  • Auto modulates open when MFP suction < 240#
  • Trips open at 210# MFP Suction #
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12
Q

How do you reset CRV-224 (2,3,4 Heater bypass valve)?

A
  • To reset, MFP Suction pressure > 260# and run controller to open
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13
Q

What do CRV-201-203 (Condensate Booster Pump Recirc Valves) do?

A
  • Maintain 4000 gpm on running pumps

- ** Flow switch is on the common discharge header**

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14
Q

Where is the flow switch located for the Condensate Booster Pump Recirc Valves?

A
  • ** Flow switch is on the common discharge header**
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15
Q

What do CMO-101(102) (SJAE bypass valves) allow?

A
  • Manually position to achieve desired DP across SJAEs

- Prevents exceeding design flow of SJAEs

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16
Q

How much hood spray does each unit have?

A
  • 138gpm (U1)

- 1200gpm (U2)

17
Q

What does CMO-61 (SJAE and HWP recirc line valve) do for you?

A
  • Provides continuous flow path from steam jet air ejector header to the main condensers to maintain minimum flow through the hotwell pumps and steam jet air ejector condensers
  • 2400gpm min per pump
18
Q

What does T.S. 3.7.6 (CST) state

A
  • 2 Hrs at mode 3 steaming through the dump valves, MSSVs, or SG PORVs with cooldown with RHR
  • 9 Hrs at mode 3 steaming though MSSVs or SG PORVs with no cooldown with RHR
19
Q

What suction pressure do the CRV-224 valves help to maintain?

A
  • 210#-240# at the MFP suction
20
Q

What Unit(s) have Condenser equalizations and what are they for?

A
  • Unit 1

- to maintain even stresses on the Turbine bearings

21
Q

What actuates hood spray in Unit 1 (CRV-102) and Unit 2(CMO-40)?

A
  • Generator Load < 7.5%
  • Turbine Speed > 900 rpm
  • Manual
22
Q

If ‘A’ Hotwell is providing input to the HW Lvl Ctlr, then which hotwell level is being displayed on the Chart Recorder?

A
  • ‘C’ Hotwell level is being displayed on the chart recorder
23
Q

How does CRV-55 fail?

A
  • CRV-55 fails closed
24
Q

How does CRV-155 fail?

A
  • CRV-155 fails closed
25
Q

What is the purpose of the condensate system

A
  • Returns condensed steam from main condensers and feedwater heater drains to the S/Gs while maintaining overall water inventory throughout the cycle
  • Compensates for loss of fluid from the steam cycle when an atmospheric steam dump occurs
26
Q

What power the CBPs

A
  • 1/2D North
  • 1/2 A Middle
  • 1/2 C South
27
Q

Why is there a unit difference with regards to the equalizing ducts between condensers

A
  • U1 1 bearing between LPTs

- U2 2 bearings between LPTs

28
Q

What is a secondary, non-safety related, function of the CST

A
  • Supplies MFP seal water pump
29
Q

What isolates the CST from atmosphere

A
  • Travelling bladder inside the tank

1. Systems (56 decks)

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