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ATR SRO Level of Knowledge > Effluent Waste Systems > Flashcards

Effluent Waste Systems Flashcards

TRA00128

1
Q

What four systems comprise effluent waste?

A

Cold Waste
Warm Waste
Hot Waste
Sanitary Waste

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2
Q

What are the sources of Gaseous Waste in ATR?

A

Fission product leakage from fuel
Fission product leakage from experiments
Rad gas from activation of Ar-40
Particulate material from:
1. Degas Tk
2. Loop pzr vent
3. Valve packing

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3
Q

Where does most of the rad gas exhausted from the ATR stack come from?

A

Degas Tank

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4
Q

What is the purpose of the H&V System?

A

Control air movement in, through, and out of the plant to minimize the dispersal of airborne contamination between sectionalized work areas within the facility.

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5
Q

How tall is the ATR exhaust stack?

A

250 feet.

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6
Q

Which systems supply air to ATR?

A

HVS-1 - South confinement (reactor main floor, 1st and 2nd basements)
HVS-2 - ATR Reactor and Office areas
HVS-3 - Canal and laydown areas
HVS-4 - ATR Office areas and restrooms
HVS-5 - Diesel room and north confinement (HDW and switchgear)

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7
Q

What are the 5 ATR Stack Monitoring Systems?

A

SPING - monitors Particulate/Iodine/Noble Gas
PPS Stack Monitoring Sys - 3 GM Instruments. 2/3 channels will initiate RMS-1 to seal confinement.
GM-34 (stack breach) or GM-35 (ATR H&V Plenum) - Initiate plant evac system alarms in RCR.
Real time monitor - Samples air going to Stack and provides isotopic analysis of effluent.
RML - Manual sampling.

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8
Q

Where is the ATR APANTEC SPING unit located?

A

West 2nd Basement

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9
Q

What is the SPING power supply?

A

Utility UPS

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10
Q

What are the ATR Evacuation systems?

A

A and B

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11
Q

What activates ATR Evac System A?

A

RAM-34 (stack breach) or 2/3 RAM-5,6, or 23

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12
Q

What activates ATR Evac System B?

A

RAM-35 (Exhaust Plenum) or 2/3 RAM-2,13, or 24

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13
Q

What are RAM-34/35 setpoints?

A

45 mR/hr

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14
Q

What are RAM-2,5,6,13,23,24 setpoints?

A

1 R/hr

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15
Q

What is required upon receipt of a valid evacuation alarm?

A

Manual Scram

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16
Q

What equipment changes position on receipt of a RMS-1 shutdown?

A

Shutdown of ATR H&V systems
Closing of primary and backup containment dampers

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17
Q

What is the hi-hi level trip sepoint for RMS-1?

A

45 mR/hr

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18
Q

What is required on a valid RMS-1 signal?

A

Manual Rx Scram

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19
Q

What is the purpose of the Digital Radiation Monitor System (DRMS)?

A

To detect, indicate, and record radiation and airborne radioactivity levels.

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20
Q

What are the ATR Stack Effluent Monitoring Limits?

A

450 Curies/day Noble Gas
6 Curies/day Particulates
0.2 Curies/day Iodine

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21
Q

What is the maximum public dose at the maximum permitted release from ATR?

A

2.5 mRem per annum

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22
Q

What are the three Air Stack Effluent Monitoring Action Levels?

A

First AL: 3x normal for gas or 10x normal for iodine/particulate: draw sample within 24 hours and report to management
Second AL: 20x normal for gas, iodine, or particulate: notify management within 30 minutes and draw sample within 8 hours, evaluate source and reactor operation within 48 hours
Third AL: 10 mrem/yet ETD from airborne releases: 2.5 mrem annual dose to public notify within 30 minutes, sample within 8 hours and every 8 hours thereafter, scram within 48 hours

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23
Q

What is the primary radioisotope from ATR stack?

A

Argon 41 (83% of all radgas released) from degas tank.

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24
Q

What reduce Ar-41 release?

A

Argon Delay System

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25
Which ATR Stack Monitoring System uses gamma ray pulse height spectrum analysis?
ATR Real Time Monitor
26
Who controls and maintains the Real Time Monitor
RML
27
What is the radiological limit for water to be considered cold waste?
0.01 uCi/mL
28
What are the sources of cold waste from ATR?
Cooling Tower Blowdown Raw Water Cooled Air Handlers Canal HX Cooling GSW & N16 Pump Oil Coolers PCS Pump Oil Cooler HX EFIS Piping Drains PCS HX Secondary Drains
29
What source is the most significant contributor to Cold Waste?
Cooling Tower Blowdown @ 100-120 GPM.
30
Where is Cold Waste water discharged?
Cold Waste Seepage pond to percolate into the aquifer.
31
Where is the water from PCP Oil Coolers collected before being pumped from the building?
M-186 Cold Waste Collection Tank
32
How many pumping units comprise the Cold Waste Collection and Discharge System?
There are four pumping units.
33
Where are the different Cold Waste Collection Pumping Units Located?
M-158 - HDW Room M-159 - HX Pit M-160 - Bypass Demin Room M-161 - Primary Piping Corridor
34
Where do the diesel pit floor drains collect for sampling and disposal?
North center floor drain empties to the oil separator unit and then to M-158 in the HDW Room M-42 Generator and South drains go to the East Cold Waste HUT M-43 Generator and South drains go to the West Cold Waste HUT
35
Where is water collected in the East and West Cold Waste HUTs disposed of?
If all sampling and analysis criteria are met, they can be disposed to the M-158 Cold Waste Collection Pumping Units. If oil is present the waste is pumped to 55 gallon barrels for disposal.
36
Where is waste collected from the HDW System disposed?
2A-C Hot Experiment Drains
37
If cooling tower blowdown were to become contaminated how could it be prevented from entering Cold Waste Leaching Pond?
Closing the gate in manhole MH 22-C and pumping to Warm Waste.
38
Where are the Cold Waste Leaching Ponds located?
Southeast of the ATR Complex.
39
Who operates the equipment and treatment facilities for sanitary waste system?
Site Services out of CFA.
40
What powers the ATR Complex Cold Waste Pumps?
Cold Waste Pumps are powered normally from Comm/Diesel Portable generators can also be setup to power the pumps.
41
Warm Waste from different TRA-670 building sources are collected where?
ATR 670-M-28 Warm Waste Tank
42
What is the capacity of 670-M-28 Warm Waste Tank?
5000 gallons
43
Why is the conductivity of wastewater dumped to the WWS restricted?
High cond'y water processed through the WWTF will prematurely deplete resin beds and possibly release radioactive material previously captured on the resin.
44
What are the possible disposal paths for wastewater collected in 670-M-28?
ATR Warm Waste Treatment Facility (WWTF) TRA-605 Warm Waste Treatment Facility ATR Complex Warm Waste Evaporation Pond
45
What are the major sources to the Warm Waste System?
Primary Degas Tk Overflow GSWFT Overflow HX Sump Rod Access and Pipe Tunnel Sump Warm Floor Drains Canal Overflows and Drains Warm Experiment Drains Reactor Tank Drains
46
Where does overflow from 670-M-28 WW Tank go?
Hot Waste Tank 670-M-27
47
What are the power supplies to the Warm Waste Pumps?
M-31 - Diesel 480V E-13 M-32 - Comm 480V E-12
48
What type of level transmitters are used in the WWT?
LT-5-1 Radio Frequency LT-5-2 Bubbler System
49
Which of the two systems controls Warm Waste Tank Level?
The one that's selected at the DCS Console.
50
Where can local indication of Warm Waste Tank level be viewed?
Gauges in the ATR Motor Floor Area
51
What other warm waste equipment is located in the Motor Floor Area?
Warm Waste Pump motors Warm Waste Sump level indication.
52
If both Warm and Hot Waste Tanks are full where will waste water be directed?
Warm Waste Sump HVE-8 Ventilation Ducting
53
How are Warm Waste Floor Drains identified?
Yellow ring painted around the drain cover.
54
How does ATR Warm Waste Treatment Facility reduce wastewater radioactivity?
Warm wastewater from M-28 is circulated through HOH mixed red resin to remove radioactive ions.
55
Where does Warm Wastewater go after passing through the resin beds?
Treated waste can go to either: 1. Waste line to TRA-605 Effluent Monitoring System 2. Recycled back to the WWT
56
Where is the ATR WWTF equipment located?
ATR First Basement southwest corner
57
If high conductivity water must be dumped to the ATR Warm Waste, what should be done to the WWTF?
WWTF should be bypassed.
58
What happens on high rad of 40 mR/hr on WWTF outlet?
Operating WWP stops WWT begins to fill and possibly overflow
59
How can WWPs be restarted after high rad trip?
Select WWTF to BYPASS will restart the pump.
60
When is Warm Waste from the ATR Complex sampled?
Warm waste is sampled as it collects in the WW Pumping Vault.
61
How would a leak in the Evaporation Pond liner be detected?
Drainage pipes located under the liner drain any liquid into collection sumps.
62
What water must be disposed of as Hot Waste?
1. High conductivity contaminated wastewater 2. Contaminated waste that exceeds 100x effluent limits or greater than 1E-3 uCi/ml for Cs-137 or Sr-90. 3. Waste with gross alpha greater than 1E-4 uCi/ml
63
What are the sources of Hot Waste from within ATR?
Hot Experiment Drains Subpile Room Floor Drains Experiment High Point Vents Nozzle Trench Drains
64
Where is Hot Waste from various sources in ATR collected?
1000 gallon Hot Waste Tank M-27.
65
Where is M-27 located?
Shielded pit under the South Basement floor (next to M-28)
66
Where can the waste collected in M-27 be disposed?
ATR M-28 WWT to Evaporation Pond (normal) TRA-605 WWTF and then to Evap Pond TRA-605 HWST (Emergency Only)
67
What must be completed prior to moving wastewater from M-27?
Waste must be mixed, sampled, and analyzed before pumping.
68
What are the power supplies to the Hot Waste Pumps?
M-29 - Diesel 480V E-13 M-30 - Comm 480V E-12
69
How are Hot Waste Floor Drains designated?
Hot Drains have a magenta ring painted around them.
70
At what Hot Waste Tank level do the pumps automatically start?
HWPs are operated in MANUAL (no auto start)
71
What type of level system is used in the Hot Waste Tank?
Bubbler system
72
With no IA, what will the Hot Waste Tank level read?
Empty

ATR SRO Level of Knowledge (31 decks)

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