CCS Flashcards
(14 cards)
What is the purpose of Turbine Plant Component Cooling Water system?
to transfer heat from various non safety related turbine plant equipment to the safety related service water system.
also serves as an intermediate barrier between the associated equipment heat exchangers and the salt water of the service water system.
Is this system a closed loop system?
yes
What are the components of this system?
three pumps, three heat exchangers, a surge tank, chemical addition tank, and interconnecting piping
Does the loss of all CCS require an immediate turbine trip?
yes
Will systems cooled by the CCS be able to function on a loss of cooling water?
no
What components does the TPCCW (CCS) system provide cooling to?
- Turbine lubricating oil coolers
- EHC fluid coolers
- Instrument air compressors and after coolers
- Generator stator cooling water coolers
- Fourth point heater drain pump coolers
- Exciter air cooler
- Generator hydrogen coolers
- Motor driven steam generator feedwater pump coolers
- Turbine plant sample system
- Condensate pump motor thrust bearing oil coolers
- Station vacuum priming seal water coolers
- Moisture separator drain pumps
- Condenser air removal pumps seal water coolers
- Isolated phase bus duct coolers
- Deaerator vacuum pumps seal water coolers
- Service air compressor and after cooler
- Auxiliary boiler blowdown vent condenser
- Sample coolers for auxiliary boiler condensate and feedwater
- Warehouse area self contained air conditioning unit (alternate manual supply capability from Unit-2)
What is the function of the service water system?
to provide cooling flow to the TPCCW heat exchangers from both trains of service water through a single line.
What does “AOP 3560” stand for?
Loss of Service Water
What is the function of the domestic water system?
What is the function of the CCS Surge Tank?
Provides Net Positive Suction Head (NPSH) to the CCS pumps, accommodates thermal expansion of the system, and provides makeup water to the system.
What level will cause the Surge Tank High/Lo level alarm to sound?
92% and 50%
Where are the TPCCW pumps located and what is their function?
14’6” northeast corner of the Turbine Building and these pumps provide the required flow for the system loads
What does OP 3330B TPCCW Precaution 3.1 state?
If TPCCW is lost during turbine operation and is not restored immediately, a turbine trip must be initiated
