EMF

Question 1

What type of detector is used for the Gas Process Monitors?

Answer 1

Beta scintillation detector for low range detection
When high range detection is needed a GM detector is used

Question 2

What type of detector is used for the Liquid Process Monitors?

Answer 2

Gamma scintillation detector for low range detection.
When high range detection is needed a GM detector is used

Question 3

What automatic actions occur on a Trip 2 signal on (1EMF-15, 2EMF-4) Fuel Storage Pool Area?

Answer 3

Automatically stops new fuel elevator from being raised

Question 4

What automatic actions occur on a Trip 2 signal on (1EMF17, 2EMF-2) - Reactor Building Refueling Bridge?

Answer 4

Actuates containment evacuation alarm below P-6. This auto action is blocked when both source ranges’ high flux trip is blocked.

Question 5

What automatic actions occur on a Trip 2 signal on 1(2) EMF31 - Turbine Bldg. Sump?

Answer 5

Stops automatic and manual operation of the sump pumps in the unit related sump.
An override switch on local sump pump control panel allows manual operation of the pumps.

Question 6

What automatic actions occur on a Trip 2 signal on 1(2) EMF33 - Condenser Air Ejector Exhaust?

Answer 6

• Closes SG BB flow control valves 1(2)BB-24, 65, 69, & 73
• Closes SG sample isolation valves 1(2)NM-269, 270, 271, & 272
• Closes 1(2) EMF-34 inlet isolation 1(2)NM-267
• Closes BB discharge to the Turbine Building sump 1(2)BB-48
• Closes BB tank vent to atmosphere 1(2)BB-27

Question 7

What automatic actions occur on a Trip 2 signal on 1(2) EMF35/36L Unit Vent Particulate/Gas Monitor?

Answer 7

• Trips unit related VA Unfiltered Exhaust Fans A and B (Bypassed if VC/YC in LOCAL)
• Aligns the unit related VA Filtered Exhaust Units A and B to Filter Mode
• Aligns VF to Filter Mode
• Closes 1WG-160 (Unit 1 only)
• Closes 1(2) VQ-10

Question 8

What automatic actions occur on a Trip 2 signal on 1(2) EMF38 - Containment Particulate?

Answer 8

• If below P-6, the containment evacuation alarm is actuated.
• The Containment Ventilation Isolation (Sh) signal is actuated if at least one train of SSPS is in service.

Question 9

What automatic actions occur on a Trip 2 signal on 1(2) EMF39 (L) - Containment Gas - Low Range?

Answer 9

• If below P-6, the containment evacuation alarm is actuated.
• The Containment Ventilation Isolation (Sh) signal is actuated if at least one train of SSPS is in service.
• A High Radiation signal shutdowns VP (separate from the Sh signal)

Question 10

What automatic actions occur on a Trip 2 signal on 0EMF41 - Aux Bldg Ventilation?

Answer 10

• Places both units VA Filter Exhaust in filter mode by closing the VA filter bypass dampers.
  *The Trip 2 must be reset to realign VA back to bypass.

Question 11

What reading on 0EMF41 - Aux Bldg Ventilation would require conduct a site assembly?

Answer 11

> 1x10^6 CPM

Question 12

What automatic actions occur on a Trip 2 signal on 1(2) EMF42 – Spent Fuel Pool Ventilation?

Answer 12

Aligns VF to filter mode

Question 13

What automatic actions occur on a Trip 2 signal on 0EMF49 (L) - Liquid Waste - Low Range?

Answer 13

Closes 1WL-124 (Waste Monit Tnk Pmps Disch)

Question 14

What automatic actions occur on a Trip 2 signal on 0EMF50L - Waste Gas Discharge - Low Range?

Answer 14

Closes 1WG-160 (WGDT Outlet to Unit Vent Isol)

Question 15

What automatic actions occur on a Trip 2 signal on 1EMF52 – Clean Area Floor Drain?

Answer 15

Realigns Floor Drain Sump D(C) Pump discharge from the turbine building sump to the ND & NS room sump

Question 16

What automatic actions occur on a Trip 2 signal on 1(2) EMF53A & B – Containment Train A(B)?

Answer 16

1(2) EMF-53A –
- Closes 1(2) WL-825A (Cont Sump Pmps Disch Cont Isol)
- Closes 1(2) WL-867A (VUCDT Cont Isol)
1(2) EMF-53B –
- Closes 1(2) WL-827B (Cont Sump Pmps Disch Cont Isol)
- Closes 1(2) WL-869B (VUCDT Cont Isol)

Question 17

What automatic actions occur on a Trip 1 signal on 1(2) EMF54HH – Unit Vent Gamma Hi-Hi Range?

Answer 17

Trips the 1(2) EMF35 & 36 sample pump

Question 18

What automatic actions occur on a Trip 2 signal on 0EMF-55 A & B - Tech Support Center Monitor?

Answer 18

Isolates TSC outside air intakes by closing

Question 19

What automatic actions occur on a Trip 2 signal on 0EMF-57 - Waste Monitor Tank Building Liquid Discharge Monitor?

Answer 19

Closes 1WL-X28 (MTB Disch to RL Isol)

Question 20

If 1(2) EMF53A & B – Containment Train A(B) are non-functional, how is containment radiation measured?

Answer 20

RP would monitor the contact dose rate at the center of the outside airlock door.