In Plant Communications (QF) Flashcards
What available forms of communication are there between the Control Room and various plant locations?
telephone (EPABX)
Sound powered phones
two way radios
public address system (PA)
How can you communicate with the ECC from the control room?
ringdown phone through microwave system
alt option is through the phone system
purpose of the emergency evacuation alarm
warn personnel to evacuate the exclusion area after a design basis accident (DBA)
purpose of the Local multiplex and remote multiplex terminals
convert electrical signals from various instruments and equipment into digital form
LMTs send/receive signals directly to/from the control room
RMTs send/receive signals to/from equipment in the field
LMTs and RMTs send/receive those signals to/from each other to then send to their respective destinations
What equipment do the RMTs send/receive signals to/from?
cooling tower LC breakers, SU switchyard switchgear and transformers, 480 VAC switchyard LC breakers
The telephone system (EPABX) has how many hours of battery life?
48 hours
What alarm does the control room have regarding the telephone (EPABX) system?
alarm to indicate failure of the battery or its charger
The public address system has how many hours of battery life in the backup batteries?
8 hours
What alarms can you initiate from the Emergency Evacuation Alarm system?
Evacuation
Assembly/accountability
All clear
Fire
What is the purpose of the telephone (EPABX) system?
station to station private line comms
interconnected to the PA system
What does the site area evacuation system consist of located outside each power block?
6 pole mounted warning sirens
solar powered batteries
What does the unit evacuation system consist of located throughout each unit?
electronic siren with amplifier/speakers
2 hour battery backup
flashing lights for high noise areas
What is the power source for sound powered telephones?
no power source, it activates with your voice
How can the sound powered telephone circuits be connected together?
merge switch on the 140’ control building
What are the two required forms of communication between the fire department and the control room?
two-way radios
sound powered telephones
