ML19274E758

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Informs of Completion of Review of Addl Info for Systematic Evaluation Program Topic VIII-4, Electrical Penetrations of Reactor Containment Re Low & Medium Voltage & Direct Current Power Penetration
ML19274E758
Person / Time
Site: La Crosse File:Dairyland Power Cooperative icon.png
Issue date: 04/17/1979
From: Linder F
DAIRYLAND POWER COOPERATIVE
To: Ziemann D
Office of Nuclear Reactor Regulation
References
TASK-08-04, TASK-8-4, TASK-RR LAC-6210, NUDOCS 7904240352
Download: ML19274E758 (6)
v • d • e


Text

..

DAHtYLAND POWEli COOPEIRATIVE Sa Grone, 01'nconsin i

$4601 April 17, 1979 In reply, please refer to LAC-6210 DOCKET NO. 50-409 Director of Nuclear Reactor Regulation ATTN:

Mr. Dennis L.

Ziemann, Chief Operating Reactors Branch #2 Division of Operating Reactors U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555

SUBJECT:

DAIRYLAND POWER COOPERATIVE LA CROSSE BOILING WATER REACTOR (LACBWR)

PROVISIONAL OPERATING LICENSE NO. DPR-45 SYSTEMATIC EVALUATION PROGRAM TOPIC VIII-4

Reference:

(1)

NRC Letter, Ziemann to Madgett, dated December 8, 1978.

Dear Mr. Ziemann:

In response to your letter (Reference 1), we have performed a review of the requested additional information for SEP Topic VIII-4, "Elec-trical Penetrations of Reactor Containment".

In this regard, we have reviewed a typical low voltage (480V AC), a medium voltage (2400 V AC) and a direct curre t (125V DC) power penetration.

The circuit information and electrical penetration information outlined in your letter is as follows:

A.

Circuit Information, Low Voltage 1.

Seal Injection Pump 1A at 480 Volts A.C.

2.

T11p Curve (See Figure 4).

3.

Circuit Current (Se.e Figure 4).

4.

External Conductor' Size is No. 2 AWG.

B.

Electrical Penetration Information 1.

Electrical Penetration by General Cable.

No Identification Number by Manufacturer.*

  • The cable has not been provided with the manufacturer's identification.

It is the manufacturer's contention that none is required as long as they are the sole producer due to the unique construction of the cable.

79042403SL Mr. Dennis L.

Ziemann, Chief LAC-6210 Operating Reactors Branch #2 April 17, 1979 B.l.

(Cont'd)

Conductor Size b No. 4 AWG (MI)

Rated Continuous Current is 90 Amperes.

2.

Short Circuit Current (See Figure 4).

3.

Electrical Tests at Site for Circuit Current.

Leakage to Ground at 2500 Volts.

Manufacturer Tests Found in U.L.

Fact Finding Report for MI Cable, " Electrical No. 23145, August 1956".

A.

Circuit Information, Medium Voltage 1.

Forced Circulation Pump 1A at 2400 Volts A.C.

2.

Trip Curve (See Figure 3).

3.

Circuit Current (See Figure 3).

4.

External Conductor Size is No. 2/0 AWG.

B.

Electrical Penetration Information 1.

Electrical Penetration by General Cable.

No Identification Number by Manufacturer.*

Conductor Size is No. 4/0 AWG (MI).

Rated Continuous Current is 235 Amperes.

2.

Short Circuit Current (See Figure 3).

3.

Electrical Tests at Site for Circuit Current Leakage to Ground at 2500 Volts.

Manufacturer Tests Found in U.L. Fact Finding Leport for MI Cable, " Electrical No. 23145, August 1956".

A.

Circuit,_Information, Direct Current 1.

D.C. Magnetic Clutches, 125 Volts D.C.

2.

Trip Curve (See Figure 10).

3.

Circuit Current (See Figure 10).

4.

External Conductor Size is No. 10 AWG.

  • Same as (*) on page 1.

Mr. Dennis L.

Ziemann, Chief LAC-6210 Operating Reactors Branch #2 April 17, 1979 B.

Electrical Penetration Information 1.

Electrical Penetration By General Cable.

No Identification Number by Manufacturer.*

Conductor Size is No. 6 AWG (MI).

Rated Continuous Current is 70 Amperes.

2.

Short Circuit Current (See Figure 10).

3.

Electrical Tests at Site for Circuit Current.

Leakage to Ground at 1000 Volts.

Manufacturer Tests Found in U.L. Fact Finding Report for MI Cable, " Electrical No. 23145, August 1956".

  • Same as (*) on page 1.

If you have any questions regarding this submittal, please contact us.

Very truly yours, DAIRYLAND POWER COOPERATIVE S

-l mwv/s, TpmylV Frank Linder, General Manager FL:WRN:af cc:

J.

Keppler, Reg. Dir., NRC-DRO III F I G. 3 5 C l' - / A ce t

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