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ATR SRO Level of Knowledge > HV Electrical Distribution > Flashcards

HV Electrical Distribution Flashcards

TRA00226

1
Q

What three pieces of information can you find on an SKM Label?

A

Incident Energy
Flash Hazard Boundary
Equipment Voltage

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2
Q

Where does the desert site INL Loop start?

A

Scoville Substation, North of CFA

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3
Q

Why do we have a loop configuration for the INL Power System?

A

Should any one section fail, power will remain uninterrupted.

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4
Q

Describe the ATR Area concerning HV Electrical Distribution.

A

ATR Area is defined as TRA-670, TRA-771 Cooling Towers, TRA-671 Cooling Water Pumphouse, TRA-689 Dynamic Learning, and TRA-634 Storage.

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5
Q

Describe the Outer/Utility Area concerning HV Electrical Distribution.

A

The Outer/Utility Area is anything within the ATR Complex but outside of the ATR Area.

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6
Q

Describe offsite power feeds into ATR.

A

TRA-757 ATR Complex Main Substation and 623 Control House sit in the NE Corner of the site. 138kV feed from NRF and INTEC.

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7
Q

What two transformer configurations step down 138kV offsite at ATR?

A

13.8kV step-down
2400V stepdown

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8
Q

What is supplied by Offsite-13.8kV step-down transformer?

A

TRA-623 Control House
TRA-785 Switchgear pad
TRA-786 Heat Deep Well Elec Equipment

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9
Q

What is supplied by Offsite-2400V step-down transformer?

A

TRA-623 Control House 2400V Bus Switchgear.

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10
Q

Draw the ATR Complex Double-Ended Bus Power Distribution System.

A
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11
Q

What are the ATR Feeder Buses?

A

13.8kV Indoor CBs located inside TRA-623 Substation Control House.

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12
Q

Draw ATR Feeder Bus Interface with Commercial Buses.

A
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13
Q

What is the only load in the outer area fed from 4160V Commercial Bus A?

A

Deep Well #4

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14
Q

What is the location of the 13.8kV-4160V step-down transformers?

A

South of TRA-781 and 688.

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15
Q

What is supplied by the 2400V Bus Switchgear?

A

TRA-609 Compressor
TRA-693 Electrical Switchgear Enclosure
TRA-634 Storage Facility
TRA-625 Maintenance
TRA-604 Mechanical and Electrical Equipment Basement
TRA-1612 Swordfish Substation
TRA-605 Warm Waste Treatment
TRA-623 Substation Control House
TRA-688 Firewater Pumphouse

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16
Q

Where are the 2400V Switchgears located?

A

Inside TRA-623 Control House

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17
Q

Draw INL 138kV Loop.

A
18
Q

Draw TRA-623 Substation Control House Switchgear distribution.

A
19
Q

Where is the ATR Diesel Bus UV Relay Located?

A

Back wall of control panel E-119.

20
Q

Where are the Commercial Power UV Relays located?

A

Mounted on the wall behind 2400V Switchgear in TRA-609 Compressor bldg.

21
Q

At what percentage do our UV relays de-energize?

A

70%

22
Q

Draw TRA-609 Electrical Distribution.

A
23
Q

What is the normal status of the TRA-609 diesel bus during operation?

A

Diesel power is a dead bus during normal commercial power operation.

24
Q

Draw the normal lineup for Outer Area Electrical Distribution.

A
25
Q

Give the acronym and description for Utility Area auto bus transfer switches.

A

SAWW
1. S - Security - TRA-604 Mech/Elec Basement 0 seconds
2. A - Air - TRA-609 Compressor Building 2 seconds
3. W - Waste - TRA-605 Warm Wastewater Treatment 4 seconds
4. W - Water - TRA-619 Raw Water Pumphouse 6 seconds

26
Q

Draw TRA-604 Electrical Distribution.

A
27
Q

From what building does 2400V power to TRA-604 come from?

A

TRA-604 Mech/Elec Equip Basement is fed from TRA-623 substation.

28
Q

What time delays are associated with TRA-604 ATS operation?

A

No delay in transfer switch going from Comm -> Diesel
5 min delay to transfer back to Comm from Diesel

29
Q

What is the backup power for 609 if diesel fails?

A

Battery Bank 609-E-39
Battery Charger 609-BC-39

30
Q

What is the purpose of the TRA-609 M-6 Peak Shaving Breaker?

A

Can be used to parallel M-6 with Comm Power. Used to cut electrical costs by supplying additional power during peak use hours.

31
Q

Draw TRA-605 Electrical Distribution.

A
32
Q

What time delays are associated with TRA-605 ATS operation?

A

Auto transfer both directions.

33
Q

Draw TRA-693 -> TRA-619 Electrical.

A
34
Q

What loads are fed by 1612 Swordfish Substation?

A

TRA-620 Office Bldg
TRA-1627 Radioanalytical Chem Lab
TRA-1608 Technical Support
TRA-678 Rad Measurement Lab
TRA-1626 TTAF
TRA-1643 Maintenance Support
TRA-1645 Modular Office Bldg
TRA-1612 Swordfish Substation

35
Q

What is the purpose of the 1646 PEEB?

A

Step down voltage from 13.8kV to 4160V.

36
Q

What components are contained by TRA-785 Switchgear Pad?

A

785-SS-1 Sectionalizer Switch feeding 785-SS-2
785-SS-2 feeds Disconnects DSW-1/2/3
DSW-1 feeds 480V to 785-E-1 Distribution Center
DSW-2 feeds 480V to TRA-679 Sim Training and TRA-680
DSW-3 feeds 480V to TRA-653 maintenance Shop

37
Q

What components are contained by TRA-786 Deep Well Electrical Equipment?

A

13.8kV SS-1 feeding Deep Well 1 MCC then Deep Well 1 and ATR Heat Dist Center
Deep Well 3 DG, 786-M-1 feeds 480/4160V XFMR that feeds Deep Well 3 MCC and Deep Well 3

38
Q

How many Primary HXs?

A

5

39
Q

What is the secondary (shell) side relief valve setting for Primary HXs?

A

80 psig

40
Q

Tube material for primary HXs?

A

Inconel (except M-3 (stainless))

41
Q
A

ATR SRO Level of Knowledge (17 decks)

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