LOT 201.04 PZR, PRT, & RCDT Flashcards

1
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What drains directly into the RCDT?

A
  • *RCP Seal #2 Leakoff**
  • *CVCS Valve Stem Leakoffs**
  • *Flange Leakoff**
  • *Excess Letdown**
  • Alternate Path*
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2
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What is the setpoint of the PZR PORVs?

A

2335 psig

  • PCV-655A: E1A11
  • PCV-656A: E1B11
  • Block valves are Class 1E 480V.

Both PZR PORVs AND Block valves required to be OPERABLE in MODES 1-3 (LCO 3.4.4)

  • Note:*
  • Relieves to PRT*
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3
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

When is COMS required?

A

< 350 ˚F

Lowers lift setpoint of PORVs. (BFPL)

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4
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What cools the PRT?

A
  • *RCDT HX**
  • CCW*

Takes 8 hrs to cool from 200 ˚F → 120 ˚F.

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5
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What is the basis for the size of the PZR and PRT?

A
  • Enough Water:*
  • *Keep Heaters covered during step load increase of 10%**
  • Enough Steam:*
  • *Accomodate 50% load reduction w/o reaching PZR LVL - High (92%)**
  • w/ Rods and Steam Dumps*
  • *After PZR LVL - High (92%) Rx trip, will not lift safety valves**
  • After Rx Trip AND Turbine Trip:*
  • *No SI**
  • *PZR will not empty**
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6
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

Where does the RCDT relief valve relieve to?

A

Containment Normal Sump

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7
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What drains into the PRT?

A
  • *RHR Pump Discharge Relief (3)**
  • *HHSI Pump Discharge Relief (3)**
  • *LHSI Pump Discharge Relief (3)**
  • *Safety Valves (3)**
  • *PORVs (2)**
  • *Seal #1 Return Relief (1)**
  • *CVCS Letdown Relief (CV-3100)**
  • *Head Vents**
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8
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What is the setpoint the PZR Safety valves?

A
  • *2485 psig ± 1%**
    • 2% / - 3% (LCO 3.4.2.2)*

3 safety valves

Keeps RCS ≤ 2735 psig w/:

  • Turbine Trip w/ NO Rx Trip
  • PORVs do NOT operate
  • Steam dumps do NOT operate
  • Note:*
  • Relieves to PRT*
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9
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What indications and controls are on the ASP for the PZR, PRT, and RCDT system?

A
  • *PZR Level**
  • *B/U Heaters (A/B)**
  • *PORVs / PORV Block Valves**

  • Note:*
  • Controls in MCR are located on CP004*
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10
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

When will the rupture discs on the PRT relieve pressure?

A

100 psig

Normally pressurized with 3 psig N2.

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11
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What drains into the suction of the RCDT pump?

A
  • *PRT**
  • *Cavity Drain**
  • *SI Accumulator Drains**
  • *RCS Loop Drains**

  • Note:*
  • RCDT Pump will auto stop on Flow - Low 2*
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12
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What is the maximum spray line ∆T allowed by the TRM?

A

621 ˚F

TRM 3.4.9.2 PZR Temperature Limits

Applicable: At all times

  • Note:*
  • By procedure limited to 320 ˚F*
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13
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

How many PZR heaters are there and what is the KW rating / heater?

A

117 Heaters

  • *17.95 KW / Heater**
  • 2100 KW Total*

LCO 3.4.3 PZR

Applicable MODES 1-3

  • Requires 2 groups (A/B) w/ 175 KW each
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14
Q
  • LOT 201.04 PZR, PRT, & RCDT*
    • *

What is the maximum amount of water that can be in the PZR in MODES 1-3?

A
  • *≤ 1816 ft3**
  • ≈ 100% PZR LVL*

LCO 3.4.3 PZR

Applicable in MODES 1-3

  • Note:*
  • Total PZR volume is 2100 ft3*
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