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ATR SRO Level of Knowledge > Canal Systems and Components > Flashcards

Canal Systems and Components Flashcards

TRA00106

1
Q

Draw the canal structure.

A
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2
Q

Draw the canal overhead.

A
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3
Q

Where is Door 51 in relation to the Canal?

A

Door 51 is located between the reactor and the storage canal sections.

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4
Q

Draw the Reactor Vessel/Canal interface.

A
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5
Q

Describe the function of the Transfer Tube.

A

The transfer tube/drop chute swings over against the reactor vessel to receive the discharged item, then swings back into the canal so that the item can be lifted out of the transfer tube.

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6
Q

What is the ATR canal made of?

A

The canal is constructed of reinforced concrete with a stainless steel liner.

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7
Q

What are the 5 basic areas of the canal facility?

A

Working Canal, T Section, East Storage, West Storage, ATRC.

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8
Q

What is the pH control band for canal water?

A

5.0 to 6.2

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9
Q

What is the normal pH operating band for canal water?

A

5.1 to 5.6

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10
Q

What are the general functions of the ATR canal?

A

1) Storage of ATR FAs
2) Storage of irradiated core and experiment components
3) Providing area for handling rad material
4) Loading/unloading facility for fuel/experiments/isotope casks.

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11
Q

What is the function of the ATR transfer tube?

A

Transfer fuel, small components, and capsules between the reactor and canal.

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12
Q

What motive force moves the Transfer Tube?

A

LDW hydraulic pressure.

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13
Q

Where is the transfer tube located?

A

45-ft deep section of the canal north of the reactor vessel.

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14
Q

What are the functions of Door 51?

A

1) Structure of TSR required Building Confinement.
2) Provides access between Reactor and Canal during outage.

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15
Q

What is the function of the Experiment Transfer Station?

A

Enables NR experiment casks to be loaded and unloaded without getting them wet.

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16
Q

What facilities/equipment are located in the working canal and T Section?

A

1) RML Wire Scanner
2) Fuel Element Inspection Fixture
3) Dummy Fuel Element Storage Grid

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17
Q

What are the different types of Experiment Storage Cans?

A

1) Large
2) Standard
3) MUCH
4) Clean

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18
Q

What is stored in the experiment holders?

A

1) NR Loop Experiment Cans
2) Loop Flow Tubes
3) Loop Inpile Tubes

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19
Q

What are the functions of the East Storage Canal?

A

1) Irradiated Fuel Storage (>276W heat gen)
2) Dry Gamma Facility
3) Long term storage of Beryllium Blocks in Deep Section

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20
Q

What prevents irradiated fuel storage grids from falling into the deep section?

A

Portable steel barrier.

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21
Q

What are the functions of the short bulkheads located on each side of the irradiated fuel storage area?

A

1) Isolate the irradiated fuel storage from the rest of canal.
2) Maintains 1-ft of water over the top of the fuel storage grids.

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22
Q

How many seals are installed on each short bulkhead?

A

Each short bulkhead has two independent inflatable seals.

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23
Q

What is the air source to inflate the short bulkhead seals?

A

Plant air.

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24
Q

Draw ATR Canal Ion Exchange System.

A
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25
Q

What is 670-E-1714?

A

Canal IX Unit Pump Control Panel

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26
Q

What is the function of the canal ion exchange system?

A

Continuously removes suspended and dissolved solids from the water.

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27
Q

Where is the canal ion exchange resin equipment located?

A

West end of the west storage canal.

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28
Q

What prevents large particles from plugging IX resin?

A

Pre-filter tank contains disposable filters that remove particles large than 20 microns.

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29
Q

Where are the two canal level rulers installed?

A

1) South wall on the west end of Irradiated Fuel Storage Area
2) South wall on the east end of Irradiated Fuel Storage Area

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30
Q

How is the TSR limit designated on the rulers?

A

A red line is painted on the ruler at 18.5 feet.

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31
Q

What is the function of the Fuel Element Stagnation Column Assembly?

A

Used to determine failed fuel or experiment assemblies.

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32
Q

What is this?

A

High Load Charger Cask

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33
Q

What is this?

A

GE-100 Cask

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34
Q

What is this?

A

BEA Research Reactor Casks (BRR)

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35
Q

What is this?

A

INIS-2 Shipping Container

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36
Q

What functions are performed in the West Storage Canal?

A

1) Fuel Element Storage (<276W heat)
2) CIC Core Component Storage
3) Miscellaneous irradiated material storage
4) Shipping cask loading/unloading

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37
Q

Of the five identified cask loading stations which one is approved for use?

A

Cask loading station #2 is approved for use.

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38
Q

What must be isolated prior to handling a cask in the canal area?

A

Plant and instrument air to the lines running near Station #2 must be isolated.

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39
Q

Is the cadmium present in some fuel storage grids necessary for criticality control?

A

No

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40
Q

What is the fissile material limit for the Cobalt Capsule Storage Grid?

A

No fissile material can be stored in this grid.

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41
Q

How are the positions of a divided transfer bucket identified?

A

1) Position #1 indexed with a notch on the lip of bucket.
2) Positions #2, 3, 4 are number clockwise from #1.

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42
Q

What is the maximum fuel limit for the canal working tray for materials other than an ATR fuel element?

A

365 grams of U-235 or equivalent.

43
Q

What is the minimum storage distance between buckets containing fissile material?

A

1 foot

44
Q

How must buckets or baskets handing from storage hooks be identified?

A

1) completed red or orange ID/info tags.
2) if they contain fissile material a Fissile Material Information Tag must also be attached to the rope.

45
Q

Describe ARC Saw Console Alarms.

A

1) Blinking YELLOW or RED indicates trouble or abnormal conditions.
2) Solid YELLOW indicates Alarm Acknowledged but not cleared.
3) Solid characters indicate NORMAL conditions.
4) RED characters indicate OFF
5) GREEN characters indicate ON
6) GRAY characters indicate NOT IN USE

46
Q

What are the 3 ATR Fuel Types?

A

1) Standard 7F Fuel Element (XAxxxT)
2) Non-borated 7F Fuel Element (XAxxxTNB)
3) Modified 7F Fuel Elements (YAxxxTM)

47
Q

Describe Standard 7F Fuel Elements.

A

1) XAxxxT
2) 1075 grams 93% enriched U-235
3) .66 grams Zone Loaded Boron-10

48
Q

Describe Non-borated 7F Fuel Elements.

A

1) XAxxxTNB
2) 1075 grams 93% enriched U-235

49
Q

Describe Modified 7F Fuel Elements.

A

1) YAxxxTM
2) YA Elements: 1022 grams 93% enriched U-235 and 0.52 grams Zone-Loaded Boron-10 (no fuel in plate 19)
3) M YA Elements: Side plate width reduced 0.015 inch, T-bar thickness reduced 0.005 inch.

50
Q

What is the function of the Canal Arc Saw?

A

1) Remove end boxes from depleted fuel elements for long-term storage.
2) Resize material for disposal.

51
Q

How does the Canal Arc Saw cut?

A

Cuts with a low voltage high current electrical arc.

52
Q

What moves the saw and rotates the blade?

A

Hydraulic fluid (water glycol mixture)

53
Q

What are the prerequisites to cutting operations in the canal?

A

1) Door 51 must be closed.
2) Radcon Tech must be present
3) Canal/Job Sup must be present is cutting fissile material
4) Canal recycle system must be secured
5) Saw bubble catcher must be in operation

54
Q

What is the power supply for the cutting arc?

A

4160V Commercial Power Bus 670-E-1 ‘A’

55
Q

What are the different types of fuel elements utilized in the ATR?

A

1) Standard 7F Element
2) Non-Borated 7F Element
3) YA Elements (no fuel in plate 19)
4) M Elements (Reduced side plate and T bar thickness.
5) Dummy Elements

56
Q

What are the specific uses of different fuel types?

A

1) Non-borated used around large inpile tubes
2) YA elements used next to aged beryllium
3) M elements used in positions of reduced dimensions due to beryllium swelling or flux trap baffle bowing
4) Dummy elements used in key core positions when the core is defueled.

57
Q

How are dummy fuel elements designated?

A

Dummy elements have DA or DUM as a prefix number.

58
Q

What is the purpose of the Hydraulic Shuttle Irradiation System (HSIS)?

A

Inserts and retrieves target material during reactor operations.

59
Q

Describe the design of the Hydraulic Shuttle Irradiation System (HSIS).

A

Primary coolant transports an cools shuttles. Send/receive station located at the west end of the ATR canal. HSIS valves are in nozzle trench and canal.

60
Q

Where is the Hydraulic Shuttle Irradiation Facility located?

A

West Storage Canal

61
Q

How is the ATRC Canal isolated from other canal sections?

A

A full length bulkhead isolates the ATRC canal and reactor room from the rest of ATR.

62
Q

What is the depth of the ATRC canal?

A

21-feet deep with deeper section under the ATRC reactor.

63
Q

How is the ATRC canal level maintained and verified?

A

1) ATRC Canal level is maintained slightly higher than other canal areas.
2) Flow is verified through the weep hole in the bulkhead.

64
Q

How is the water quality of the ATRC canal maintained?

A

ATRC recycle system circulates water through particulate filters and an ultraviolet sterilizer.

65
Q

How is canal level controlled?

A

Level is controlled by adjustable overflow drain elevation next to D-51.

66
Q

How would a leak in the stainless steel liner be detected?

A

Water flow from one or more of the 16 tell-tale drains located in the first and second ATR basement.

67
Q

What is the purpose of the hard-piped canal drains?

A

They are used in conjunction with long canal bulkheads to isolate and drain specific areas of the canal.

68
Q

What prevents inadvertent draining through hard pipe canal drains?

A

1) Drain covers in the canal must be manually removed.
2) Each drain valve handle is locked in the closed position.

69
Q

What cranes service the Canal?

A

1) 30/5-ton Bridge Crane
2) 2-Ton Jib Crane

70
Q

What procedures control fissile material handling?

A

1) ATR LST-1083
2) SD-11.5.6

71
Q

How close to a vertical discontinuity can FEs be stored?

A

> /= 6 inches

72
Q

Limitation on cask movement?

A

No fuel can be present in the reactor vessel when moving a cask over the pipe tunnel area of the canal.

73
Q

How long must fuel elements be handled in non-horizontal position?

A

Cannot be handled horizontally until 48-hour cooling time met.

74
Q

How many ATR fuel elements can be outside of approved storage (including transfer tube)?

A

No more than 3.

75
Q

How many fueled experiments can be outside of approved storage?

A

No more than 1.

76
Q

Draw the canal recycle system.

A
77
Q

What tool is approved for handling reactor fuel elements?

A

Positive Latch Hook tool

78
Q

What is required once work is completed using fuel handling tools 15-feet or longer?

A

They must be wiped down and stored in the tool rack.

79
Q

What is the maximum number of ATR Fuel Elements that can be out of approved storage at one time?

A

3 elements including any in the canal transfer tube.

80
Q

What is the maximum number of fueled experiments that can be out of approved storage at one time?

A

One.

81
Q

What are the functions of the Canal Recycle System?

A

1) Remove fuel decay heat.
2) Remove micro-organisms from the canal water

82
Q

What is used to control biological growth in the canal?

A

Canal Recycle System UV sterilizer (90% microorganism free)

83
Q

What are the different canal records we maintain?

A

1) Canal Logbook
2) Canal Transfer Records
3) Grid Maps
4) Receipt or Removal of Experiment Form
5) ATR Fuel Element history form
6) Semi-Annual Canal Inventory Form
7) ATR Trash inventory form

84
Q

What records are required when an ATR fuel element is moved?

A

1) Canal Logbook
2) Canal Transfer Sheet
3) Grid Map
4) Fuel Element History Form

85
Q

What is the TSR requirement for canal level?

A

Level must be maintained >/=18.5 feet.

86
Q

What type of level sensing system are employed for canal level?

A

Bubbler type systems.

87
Q

At what level will the canal low level alarms be received?

A

When canal level drops to 19 feet.

88
Q

At what level will the Canal Emergency Firewater Make-Up system initiate?

A

Firewater Make-up will initiate at 8 feet above canal floor.

89
Q

What is the source of water to the Canal Emergency Firewater Make-up?

A

Reactor bottom head EFIS line.

90
Q

What is the air supply to the Canal Level bubblers? (LT-19-1/19-6)

A

Instrument air from under the canal parapet.

91
Q

What is the air suppl to the Canal Emergency Firewater Make-Up System?

A

Plant Air with N2 Bottle Backup

92
Q

How would the canal emergency firewater make-up system respond to a loss of air pressure?

A

System initiates firewater addition to the canal.

93
Q

What is the electrical power supply to the canal emergency firewater make-up system?

A

120V Utility UPS System 670-E-115

94
Q

How would the Canal Emergency Firewater Makeup System react to a loss of power to the transmitter or a transmitter failure?

A

System would initiate firewater addition to the canal.

95
Q

How would the canal emergency firewater make-up system react to a loss of power to the control panel?

A

The system would do nothing as the two MOVs would not open.

96
Q

What requires both the Canal emergency fire water and canal LDW makeup systems be operable?

A

ATR’s environmental impact statement

97
Q

What is the min makeup capacity to the Irradiated Fuel Section?

A

13 GPM with short bulkhead seals inflated.
38 GPM with loss of short bulkhead seal pressure.

98
Q

How can the Canal Emergency Firewater Make-up be manually actuated?

A

Disconnect black wire on LT-10-133.

99
Q

What other sources of emergency canal makeup are available?

A

1) Canal LDW quick fill to the T Section through valve GT-8-18 and FCV-8-68.
2) Fire hose stations in the canal area.
3) Outside water sources through the Auxiliary Canal Fill System.

100
Q

Why would make-up using raw water be a least preferable solution?

A

Raw water will contaminate the canal with hard water minerals, salts and chlorides.

101
Q

Why might the Canal LDW quick fill valve not be effective with a large leak in the canal?

A

It does not add water to the irradiated fuel storage area directly.

102
Q

Where does the auxiliary canal fill system enter the canal?

A

Enters the irradiated fuel storage area through three different nozzles.

103
Q

Where do the external water sources connect to the auxiliar canal fill system?

A

Outside the west canal door.

104
Q

What water sources can be connected to supply the auxiliary canal fill system?

A

1) External fire hydrants.
2) Fire Engine Tankers
3) Water tankers

ATR SRO Level of Knowledge (13 decks)

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