Systems

Question 1

RCP Overcurrent Trips

Answer 1

Hot: 640A
Cold: 800A
Always cold, hot or not
Protects bus and pen
Primary: trip/lockout bkr 
B/U: Bus diff relay (TD)

Question 2

EDG Start Sequence

Answer 2

LOP signal
————————————————
Slow transfer attempt (5 sec)
EDG starts
Tie Bkr opens 
————————————————
EGLS LOP strip
Bus UV lockout (6 min to reset)
————————————————
Bus stripped permissive
————————————————
EDG Bkr auto closure (9 sec)

Question 3

Fast Transfer

Answer 3

Adequate voltage (97/90% → 4/6kV)
Bus-tie closed
Attempt <7.5 cycles (6 → 6.9kV)
Red-flagged (not UV)
No RSST or NSST b/u LO

Question 4

Slow Transfer

Answer 4

Bus-tie open
Adequate voltage (97%)
Lockouts reset
Loss of voltage (30%)

4kV only
If successful, EGLS doesn’t see LOP, so SWP-AOV39s don’t open

Question 5

EGLS

Answer 5

Power from VIAC-1/2
Energize to actuate
Test 1: signals reset (respond if not inhibited)
Test 2: signals don’t reset (combo)
Sequencer Reset: resets memory so ops have control (EGLS/MB2/ASP)
Station Reset: resets LOP (EGLS)

Question 6

EGLS

LOP

Answer 6

CHS
ABF
AFW
SW
HVK

CCP
CAR
CRDM

Question 7

EGLS

SI

Answer 7

CHS
ABF
AFW
SW
HVK

CCP
CAR
CRDM

SI
RHR

Question 8

EGLS

CDA

Answer 8

CHS
ABF
AFW
SW
HVK

SI
RHR

QSS
RSS

Question 9

EDG Trips

Answer 9

110% over speed
50# lube oil
Primary Lockout

Question 10

Pump Runout Flows

Answer 10

CHS: 560/880
SI: 650/830
RHR: 5500/10,000
QSS: 5200/6500

Question 11

SW Pp Flow Criteria

Answer 11

Min:
1 pump: 1 CCP or 2 CCS
1 pp/train: 1 CCP and 2 CCS

Max:
1 pump: 1 of each
1 pp/train: 2 of each

Question 12

CCP Signals

Answer 12

NS hdr isolates on 68%, LOP, CIA
CTMT hdr isolates on CIB
X-conn close on 68%, SI
CDS x-conn close on 68%, open on LOP, CIA

Question 13

CCP Headers

Answer 13

CTMT:
A: LDHX, RCP A/D
B: ELHX, SRHX, CCE, RCP B/C
CAR, NSS on LOP/CIA

Safety: RHR, SFC, CCI (A)

Question 14

PZR Pressure Control

Answer 14

2350 - PORV opens
2330 - PORV closes
\+75 - Spray full open
\+25 - Spray starts to open
\+15 - Controlling htrs off
2500 - Pref
-15 - Controlling htrs on
-17 - B/U htrs off
-25 - B/U htrs on

Question 15

VCT

Answer 15

%           112                 185
———————————————
96:        To BRS, A  - A
66-99:                     - To BRS
41-54:  Auto M/U  -
16:          ≠ GWS, A - A
4:            Swap to RWST(2/2)