EO 1 BLOCK 4 CCW Flashcards
CCW Essential Loads
HPI
LPI
CTMT H2 Analyzer
EDG
MUP
DH
CCW Non-essential header
CTMT (Letdown,RCP’s)
Control Rod Drive
MUP
SFP Cooling
Waste Gas
RC Sample Coolers
BA Evaporators
Quench Tank
Seal Return
PASS coolers
What cools CCW?
Service Water
What does Nitrogen do for the CCW System?
Cover gas for the CCW surge tank
What provides make up for the CCW system?
Demin Water
What CCW valves CLOSE for an SFAS level 3?
CC1460 MUP’s and CC1495 Aux Building Non-essentials
What CCW valves CLOSE for an SFAS Level 4?
CRD and CTMT header valves
What CCW valves OPEN for an SFAS level 3?
DH valves
CCW Pump auto starts
Low flow in opposite loop of 1000gpm
SA 2
10 sec after EDG start
What do the DSA and DSB switches do on C1/D1 for the CCW pumps?
DSA removes SA start features
DSB removes CTRM control
What causes the CCW surge tank relief to align to the MWDT?
Hi RAD
What is the relief pressure of the CCW surge tank valve?
5#
How do you determine the alignment of the CCW surge tank relief valve?
Up position to atm
Down position to MWDT
Where does the CCW surge tank relief normally vent to?
to atm in fan alley
Which ONE of the following is a function of the Component Cooling Water System?
A. Provide cooling to the Makeup Pumps.
B. Provide cooling to the Containment Spray Pumps.
C. Provide cooling to the Station Blackout Diesel Generator.
D. Provide cooling to the Emergency Instrument Air Compressor.
A
The following is a list of functions for the Component Cooling Water System.
1. Provides cooling to essential systems.
2. Provides cooling to non-essential NSSS support systems.
3. Provides a barrier between radioactive systems and the environment.
4. Provides a leak detection system for Stator Cooling System.
Of the groups of numbers below, which ONE provides a list of MAJOR purposes of the CCW
System?
A. 1, 2, 3
B. 1, 2, 4
C. 1, 3, 4
D. 2,3,4
A
Which ONE of the following Component Cooling Water loads is NORMALLY supplied via essential
header 2?
A. Reactor Coolant Pumps 1-2 and 2-1
B. Spent Fuel Pool Heat Exchanger 1-2
C. Containment Gas Analyzer Heat Exchanger 1-1
D. Emergency Diesel Generator 2 Jacket Cooling Water Heat Exchanger
D
Which ONE of the following is a load on the Component Cooling Water, Auxiliary Building NonEssential header?
A. Quench tank cooler
B. Decay Heat Cooler
C. Control Rod Drive Motor coolers
D. Reactor Coolant Pump upper bearing cooler
A
Which ONE of the following is supplied from the Component Cooling Water Non-essential Header?
A. Hydrogen Dilution Blower
B. Hydrogen Analyzer coolers
C. Post Accident Sample System coolers
D. High Pressure Injection Pump Bearing Oil coolers
C
Which ONE of the following Component Cooling Water (CCW) loads CANNOT be supplied from
the essential header?
A. Decay Heat coolers
B. Makeup Pump oil coolers
C. Reactor Coolant Pump seal coolers
D. Containment gas analyzers
C
The following alarms have just actuated:
* CCW RETURN RAD HI (11-1-A)
* CCW SURGE TK LVL HI (11-4-A)
Which ONE of the following components leaking would be the MOST LIKELY cause of these
alarms?
A. Decay Heat Cooler
B. Boric Acid Evaporator
C. Waste Gas Compressor cooler
D. Spent Fuel Pool Cooler
A
Given the following conditions:
The plant is at 100% power
All systems are operating as designed
A Component Cooling Water (CCW) Surge Tank High Level alarm has just been received The Reactor Operator reports CCW return radiation level is trending upward as well as surge tank level IDENTIFY the CCW load that is the likely source of the leakage into the system.
A. Decay Heat Coolers
B. Pressurizer Quench Tank Cooler
C. Letdown Coolers
D. Boric Acid Evaporator Condensers
C
Which ONE of the following components is supplied cooling by Component Cooling Water?
A. Containment Air Coolers
B. Containment Hydrogen Dilution Blowers
C. High Pressure Injection (HPI) Pumps
D. Emergency Core Cooling System (ECCS) Room Coolers
C
The following plant conditions exist:
The plant is operating at 100% power.
Annunciator Alarm 11-3-A, CCW SURGE TK LVL LO, has just come in. Component Cooling Water surge tank level indicates 42 inches.
Which ONE of the following pieces of equipment would be of concern if operating?
A. Make Up Pump 1
B. Reactor Coolant Pump 1-1
C. Waste Gas Compressor 1
D. High Pressure Injection Pump 1
C
The following plant conditions exist:
* The Reactor is operating at 100% power
* The Component Cooling Water Surge Tank is inadvertently drained to 42 inches while sampling the CCW system
Which one of the following would see an INCREASE in temperature until the Surge Tank level is restored?
A. A running Emergency Diesel Generator
B. Oil in a running Makeup Pump
C. All CAD Motor Stators
D. The Makeup Tank
D
Which ONE of the following is the normal Component Cooling Water pump lineup at 100% power?
A. - one (1) pump is running
- one (1) pump in standby
- one (1) pump electrically aligned to the running CCW pump side.
B. - one (1) pump is running
- one (1) pump in standby
- one (1) pump is electrically disconnected.
C. - two (2) pumps are running
- one (1) pump in standby electrically aligned to the side supplying non-essential loads.
D. - two (2) pumps are running
- one (1) pump electrically disconnected.
B
The MINIMUM continuous (greater than 4 hours) flow requirements for a Component Cooling Water pump is __ gpm.
A. 500
B. 800
C. 1000
D. 3000
D