Fire Detection System(EFA)

Question 1

What is the purpose of the Fire Detection System?

Answer 1

1. Monitors areas(zones) for the plant for smoke and/or fire and provides alarms and control output as necessary
2. Monitors the Fire Protection Sprinkler System(RF)

Question 2

How many fire protection zones are there in the plant?

Answer 2

There are 238 fire protection zones in the plant

Question 3

What component receives an input from the fire detectors?

Answer 3

The Fire Alarm Control Panels(FACPs) receive input from the fire detectors and provide an input to the Fireworks Control Consoles.

Question 4

How many Fire Alarm Control Panels are there, and what component do they provide an input to?

Answer 4

1. There are a total of 36 Fire Alarm Control Panels
2. There are 34 FACPs connected in a serial ring called the Core Communication Loop(CCL)
3. FACPs 37 and 38 send signals to the Fireworks Control Consoles in the Control Room(Consoles #1 and #2)

Question 5

Where are fire alarms displayed?

Answer 5

1. Locally on the Fire Alarm Control Panels

2. Fireworks Control Consoles

Question 6

What are the Fire Alarm Control Panels equipped with for an emergency source of power?

Answer 6

The FACPs have an internal battery backup capable of providing power for 24 hours

Question 7

What is advantageous of the Fire Alarm Control Panels configuration?

Answer 7

The FACPs are configured in such a way that any FACP can provide the status of any other detector or FACP connected in the loop.

Question 8

Where are the power supplies to the Fire Alarm Control Panels?

Answer 8

1KXPB and 2KXPB

Question 9

Where are the Fireworks Control Consoles located?

Answer 9

The Control Room

Question 10

What is the power supply to the Fireworks Control Consoles?

Answer 10

#1 Console - 1KXPB(primary), auto swaps to 2KXPB(backup)
#2 Console - 2KXPB(primary), auto swaps to 1KXPB(backup)

Question 11

What are the events and the associated colors displayed on the Fire Control Consoles?

Answer 11

Alarms(red events)
Trouble(yellow events)
alarms have to be acknowledged on both consoles to allow another alarm to flash on the consoles

Question 12

What are the four major screens on the Fire Control Consoles?

Answer 12

1. Browser or Alarm Screen
2. Event Action Screen
3. Map Screen
4. Event List Screen

Question 13

What affect does an abnormal state have on the Fire Control Consoles?

Answer 13

When a Fire Alarm Control Panel comes into an abnormal state the Fire Control Console screen will automatically change to the Annunciator Response Screen.

Question 14

What are the indications on the Map Screen of the Fire Control Console?

Answer 14

1. The Map Screen displays a particular fire zone and the detectors in that zone.
2. Colors/indication:
   A. Blue - detector is normal
   B. Red - detector in alarm
   C. Yellow - detector trouble
   D. Grey - detector is disabled

Question 15

Where can alarms be read on the Fire Control Consoles?

Answer 15

Alarms can be read from:

1. Event Action Screen
2. Even List Screen
   * Alarms can be silenced from the Event Action Screen*

Question 16

What are the color codes for alarms received on the Fire Control Console?

Answer 16

1. Yellow - trouble events and supervisory events
2. Green - Restored events
3. Red - Fire events

Question 17

What are the types of fire detectors that are utilized in the Fire Detection System?

Answer 17

1. 4D Multisensor Detectors
2. Thermal Detectors
3. Ultraviolet Flame Detectors
4. Heat Sensitive Cable Detectors

Question 18

What is the design/purpose of the 4D Multisensor Detectors?

Answer 18

1. Contains 3 fire sensing elements:
  A. Ionization
  B. Photoelectric
  C. Heat
2. Most detectors are this type, but the Containment detectors were not replaced

Question 19

Where is it useful to use ionization elements?

Answer 19

Ionization elements are suited for electrical fires where smoldering proceeds flames

Question 20

Where is it useful to use Photoelectric Elements?

Answer 20

Photoelectric elements are useful in high humidity areas

Question 21

What is the design/purpose of the Ultraviolet Flame Detectors?

Answer 21

1. Very fast response time
2. Sensitive to arc welding
3. Must be in the direct line of sight of the flames
4. Detects the UV light given off by flames

Question 22

Where are Ultraviolet Flame Detectors normally used?

Answer 22

1. Used where oil is the primary hazard
2. Used around the Spent Fuel Pool due to the ceiling height. The height of the ceiling would prevent a quick response from a smoke detector.

Question 23

What are the two types of Thermal Detectors?

Answer 23

1. Fixed Temperature

2. Rate-of-rise

Question 24

What are the two categories of Thermal Detectors?

Answer 24

1. Non-restorable

2. Restorable

Question 25

What is the difference between a restorable and a non-restorable Thermal Detector?

Answer 25

1. Restorable will reset when the temperature returns to normal and can be reused 2. Non-restorable must be replaced after an actuation

Question 26

Where are the Thermal Detectors typically used?

Answer 26

1. Areas protected by Mulsifyres | 2. Areas protected by CO2

Question 27

What is the design/purpose of the Heat Sensitive Cable Detector?

Answer 27

1. Stainless steel cable detects changes in conductivity due to temperature changes 2. Located around the NC pumps and the Annulus 3. Self resetting when temperature lowers below 225F

Question 28

What is the design/purpose of the Annulus Fire Detection Sub-System?

Answer 28

1. Monitors Annulus for fire and provides output signal to FACPs 2. Separate panel in the 560’ elevation 3. 6 zones(20 points in each zone) 4. Panel contains a graphic display of the “hot spot” 5. Operator will have to be dispatched to determine the location of the fire when an Annulus alarm is received in the Control Room

Question 29

Who is notified of any Fire Detection/Protection System discrepancies?

Answer 29

The WCC SRO/Fire Brigade is notified of any impairment

Question 30

What is a Fire Impairment?

Answer 30

The inability of any part of the Fire Protection/Detection System, Fire Rated Barrier, or related support system to function as designed.

Question 31

What are the responsibilities of the WCC SRO?

Answer 31

1. Completes fire impairments 2. Assigns fire watches 3. Notifies Fire Protection Engineer of impairments 4. Approves compensatory actions

Question 32

What are Compensatory Actions?

Answer 32

The steps taken to minimize the fire risk potential due to a fire protection feature impairment such as staging backup suppression, temporary fire detection, fire watch tours, etc.

Question 33

What is the definition of Fire Watch?

Answer 33

Person assigned to patrol and observe an area for the purpose of detecting and reporting fire hazards and fires

Question 34

What is the definition of Continuous?

Answer 34

Fire Watch must remain in assigned locations at all time. May be stationary or patrol assigned locations at least once every 15 minutes. 1. Shall not be assigned more than one Fire Area 2. May cover multiple elevations or rooms as long as it’s a single Fire Area

Question 35

What is the “Grace Period” associated with Fire Watches?

Answer 35

A “Grace Period” of 25% is allowed to complete a periodic Fire Watch not to exceed 30 minutes. ****not intended to be cumulative****