AB-RCP-0001                    RCP Abnormalities

Selected Entry Conditions:

Seal Leakoff < .8 gpm Modes 1, 2, or 3 @ NOP

Seal Leakoff > 5 gpm

Shaft vibes > 15 mils or Flange vibes > 3 mils.

RCP Motor Winding ≥ 235°F Hot or ≥ 248°F Cold (Mode 5)

Trip RCPs at: validated

1. Lose CC to ALL RCPs
2. More than 5 minutes loss of CC w/ RCP BRG CLG WTR FLO LO
3. Seal Injection AND Thermal Barrier flows lost
4. Shaft > 20 mils, Flange >5 mils
5. Motor Bearing > 175°F
6. Motor Winding > 302°F
7. SealWateroutlet>190°F
8. #1 seal leakoff <.8 gpm and jumps to ≥6 gpm
9. #1 seal leakoff <.8 gpm and temps rising
10. #1 seal leakoff ≥ 6 gpm

Paths

IF CCW, fix CCW

Motor Winding - maximize CAN Ventilation near that RCP. Available CFCUs in high speed.

Loss of seal injection AND < 2.5 gpm leakoff on any RCP - restore seal injection or raise VCT press >30 – 50 psi (prevents flashing in the line, even if there is cooling to TBHX)

Leakoff < .8 gpm or slowly approaching 6 AND temps are stable or lowering - ensure injection ≥ 9 gpm, commence orderly S/D, stop RCP w/in 8 hrs.

#2 Seal leakage by RCDT leak rate

Ensure injection > 9 gpm

Leakoff .5 - 1.1 gpm - continue operation

>1.1 - orderly S/D and stop RCP w/in 8 hrs

Total leak off from #1 & #2 seals

> 8 gpm - Attachment 2 (stopping RCPs)

Between 6 and 8 and temps not stable-Attachment 2

Between 6 and 8 and temps stable - orderly S/D within 8 hrs after rising > 6 gpm

Thermal Barrier HX

Isolate and find w/ CC130s

Attachment 2 (stopping RCPs):

If trip breakers are open, go to AB.RC-0004, Natural Circulation

Trip Reactor

Stop affected RCP(s)

Simultaneously
Between 3-5 minutes after stopping pump, close the CV104
Confirm | EOP-TRIP-1, and continue with this Attachment.

Simultaneously
Isolate letdown and swap charging pump suction
Confirm | EOP-TRIP-1, and continue with this Attachment.

If seal injection flow AND thermal barrier flow is lost,

All seal inlet temps <225°F – reestablish seal cooling

Any ≥225°F – cooldown and depressurize.