2.4 Entry Conditions

Question 1

2.4 Loss Of Vacuum Entry

Answer 1

1. Unexpected lowering vacuum
2. Unexpected LP Turbine pressure rising
3. SJAE inlet pressure low out of green band
4. SJAE flow HI/LOW

Question 2

2.4 Extraction Steam Entry

Answer 2

1. Abnormal FW Temp HI/LOW
2. FW Htr Trip
3. Moisture Sep HI LVL
4. FW Htr bypassed
5. Erratic Main Condensate system flow

Question 3

2.4 Loss Of Vacuum Imm Axns

Answer 3

Decrease power per 2.1.10 to maintain vacuum 23”hg

Question 4

2.4 Loss Of Vacuum Scram Axns

Answer 4

If vacuum CANNOT be maintained 23”hg:
9-5-2/C-4 clear, Scram/2.1.5
9-5-2/C-4 in, Trip Turbine/2.2.77 if not scrammed

Question 5

2.4 Extraction Steam Imm Axns

Answer 5

If Rx Pwr >100%, decrease per 2.1.10

Question 6

2.4 Extraction Steam Scram Axns

Answer 6

1. If operating in unanalyzed region
2. Any reheat stop valve or intercept valve close
3. Moisture seperator HI LVL in continuous >4 minutes WITH associated #5 htr HI LVL TRIP
4. Main Turbine Vibes >= 2 mils on bearings 3/4/5/6

Question 7

2.4 Reactor Power Entry

Answer 7

1. Unexplained rise or lowering of Rx Power
2. Uncontrolled power oscillations outside SER
3. Power fails to rise with increase in total core flow

Question 8

2.4 Reactor Power Imm Axns

Answer 8

1. If power rising, lower power per 2.1.10

Question 9

2.4 Reactor Power Scram Axns

Answer 9

1. If power rise not terminated by imm axns, Scram/2.1.5
2. If power is undergoing significant, uncontrolled oscillations, Scram/2.1.5
3. If 2 or more LPRMs >= 100 W/cm2, Scram/2.1.5

Question 10

2.4 Reactor Level Entry

Answer 10

1. Erratic/unexplained level changes

2. Level fails to follow power changes

Question 11

2.4 Reactor Level Scram Axns

Answer 11

Level cannot be maintained > +12” NR or < +50” NR

Question 12

2.4 TEC Entry

Answer 12

1. HI TEMP alarms on multiple TEC cooled components

2. Abnormal use of demin water

Question 13

2.4 TEC Scram Axns

Answer 13

1. TEC pressure CANNOT be restored/maintained >55# and component temps are rising and do not stabilize, then Scram/2.1.5, trip MT, rapidly lower Rx Pressure to 500-600# with BPV per 2.2.71
2. If SW to TEC has been lost and cannot be restored,
   then Scram/2.1.5, trip MT, rapidly lower Rx Pressure to 500-600# with BPV per 2.2.71
3. If TEC surge tank lvl LOW OOS and cannot be restored, Scram/2.1.5 and trip MT

Question 14

2.4 RPIS Entry

Answer 14

Loss of MORE THAN 1 CR PI

Question 15

5.2 SW Entry

Answer 15

1. SW header pressure lowering
2. 36 and/or 37 automatic isolation
3. Indication/report SW piping failure
4. SW pump trip causing LP isolation
5. River level at or forecasted to lower < = 865’

Question 16

5.2 SW Scram Axns

Answer 16

1. SW system pressure <38# in BOTH loops AND SW cooling CANNOT be restored to TEC
2. E Bay cannot be maintained >865’

Question 17

5.2 REC Entry

Answer 17

1. REC hdr < = 62#
2. Rising temp on REC cooled equipment
3. Multiple low flow or pump alarms on VBD-M

Question 18

5.2 REC Imm Axns

Answer 18

If header pressure < = 62#, start available REC pumps. If REC pressure is not restored, close 710 - RWCU NRHX INLET and 1329 - ARW SUPPLY

Question 19

5.2 REC Scram Axns

Answer 19

1. If imm axns do not restore header pressure

2. If SW lost to BOTH REC HXs

Question 20

2.4 GEN-H2 Entry

Answer 20

1. Abnormal H2 gas/pressures
2. Abnormal Gen Stator temps/vibes
3. Abnormal H2 Seal Oil pressures
4. Abnormal exciter amps/volts
5. Active H2 leak
6. Main Generator VR in manual
7. Rapid uncontrolled changes in MWs/MVARs

Question 21

2.4 GEN-H2 Scram Axns

Answer 21

1. Abnormal Air Side Seal Oil
<50# PI or 0# D/P
Scram and Trip MT
2. Abnormal H2 Drain Regulator Tank Level
Both H2 Side Drain Reg Tank LOW (LI) or OOS Low (LOCAL) AND Gen H2 pressure lowering OR H2 detected in Seal Oil Pump Room
Scram and Trip MT
3. Abnormal H2 Gas Pressure or H2 Leakage
Generator Pressure <30#
Scram and Trip MT
4. Abnormal Stator of Gas Temperatures
Stator Temp > = 210F
Scram and Trip MT

Question 22

2.4 Turbine Entry

Answer 22

1. Rising turbine or generator vibes
2. Rising thrust/journal bearing metal or drain oil temp
3. LP Exh Hood A and/or B temp rising
4. Exh Hood Spray pressure outside normal range (200-300#) when hood spray required
5. Low bearing oil pressure
6. Low lift pump discharge or lift pump fails to start
7. Emergency bearing or Turning gear oil pumps fail to start.
8. Dropping/low GS exhaust pressure
9. Abnormal GS pressures
10. Abnormal SJAE flows
11. Steam leaking into TB from seals
12. TB Eff RM alarming
13. Failure of loop seal or reservoir loop seal vapor extractor
14. Stuck close TSV or GV

Question 23

2.4 Turbine Scram Axns

Answer 23

1. HI Vibes - Bearings 1-8 > = 14mils with changing vibe levels on at least 1 other bearing
2. Thrust Bearing - Metal > = 225F or > = 70F
3. Exhaust Hood - LP Exh Hood temp > = 230F for > = 15 min
4. Turning Gear and Emergency Oil Pumps fail
5. Diff Exp #1 LONG & > = .5” Gov End
   Diff Exp #2 LONG & > =.55” GEN End
6. Diff Exp #1 SHORT & > = .1”
   Diff Exp #2 SHORT & > = .05”
7. Bearing Metal > = 225F
8. Drain Oil > = 180F
9. If GOV Valve on other side of stop valve closed AND cannot be reopened immediately