ML14192A216
| ML14192A216 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 07/06/1981 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Jackie Jones CAROLINA POWER & LIGHT CO. |
| References | |
| NUDOCS 8107160131 | |
| Download: ML14192A216 (3) | |
Text
DISTRIBUTION Docket NRC PDR L PDR IUL 0 6 19 81 TERA NS IC Docket No. 50-261 ORB#T'Rdg DEisenhut OELD IE-3 9
tr. J. A. Jones ACRS-10 Senior Executive Vice President SVarga JULO Carolina Power and Light Company DNeighbors ga 336 Fayetteville Street CParrish RalUTgh, North Carolina 27602 Gray FiTe
Dear Mr. Jones:
to By letter dated June 17, 1981, you provided your approbhb for performing an expanded study of the H. B. Robinson Steam Electric Plant, Uilt 2 Station Electric Distribution System Voltage. Your approach is based on the folowing:
11 A system analysis using.initial conditions of the system grid at 0.95 p.u. with 100% power operation at name plate Fating with safety injection initiated.
- 2. A system analysis using initial conditions of the grid at 1.06 p.u.
with all plant buses in their most lightly loaded condition.
- 3. A tabulation of the load terminal voltages for steady -state and transient conditions on the 4160, 480, 208, and 120-volt buses based 'upon results of analyses conducted in 1 and 2 above.
- 4. An in-plant test to measure and record the boads and impedances during steady state, starting of a latge 4160-volt motor and starting of a large Class IE motor for comparison with Whd.verifi cation of results of analyses obtained by calculations with an explanation of any variances between th analytical and tests results.
yfu requested that we verify our agreement with the above approach.
We concur that the above information is what we discussed Oy telephone on March 10,15981, except that under item 1 you should include starting a large nont-class IE motor.
Sincerely, Original signed by S. A. Varga Steven A. Varga, Chief 8107160131 810706 Operating Reactors Branch #1 PDR ADOCK 0500026 Division of Licensing cc:
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NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD CO PY USGPO: 1981-335-960
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 July 6, 1981 Docket No. 50-261 Mr. J. A. Jones Senior Executive Vice President Carolina. Power and Light Company 336 Fayetteville Street Raleigh, North Carolina 27602
Dear Mr. Jones:
By letter dated June 17, 1981, you provided your approach.for performing an expanded study of the H. B. Robinson Steam Electric Plant, Unit 2 Station Electric Distribution System Voltage. Your approach is based on the following:
12 A system analysis using initial conditions of the system grid at 0.95 p.u. with 100% power operation at name plate rating with safety injection initiated.
- 2. A system analysis using initial conditions of the grid at 1.06 p.u.
with all plant buses in their most lightly loaded condition.
- 3. A tabulation of the load terminal voltages for steady state and transient conditions on the 4160, 480, 208, and 120-volt buses based upon results of analyses conducted in 1 and 2 above.
- 4. An in-plant test to measure and record the loads and impedances during steady state, starting of a large 4160-volt motor and starting of a large Class IE motor for comparison with ahd verifi cation of results of analyses obtained by calculations with an explanation of any variances between thd analytical and test results.
You requested that we verify our agreement with the above approach. We concur that the above-information is what we discussed by telephone on March 17,71981, except that under item 1 you should include starting a large non-class IE motor.
Sincerely(
perating Reactors B anch #1 Division of Licensing cc:
See next page
- r.
. A. Jones Carolina Power and Light Comp any cc.
G. F. Trowbridge, Esquire Shaw, Pittman, Potts and Trow ridge 1800 M Street, N. W.
Washington, D. C.
20036 Hartsville Memorial Library Home and Fifth Avenues Hartsville, South Carolina 29550 U. S. Nuclear Regulatory Commission Resident Inspector's Office H. B. Robinson Steam Electric Plant Route 5, Box 266-1A Hartsville, South Carolina 29550 Michael C. Farrar, Chairman Atomic Safety and Licensing Appeal Board Panel U. S. Nuclear Regulatory Commission 1-.ashington, D. C.
20555 Ri chard S. Salzman Atomic Safety and Licensing Appeal Board Panel U. S. Nuclear Reculatory Commi ssi on Va shington, D. C. 20555 Dr. W. Reed Johnson Atomic Safety and Licensing Apneal Board Panel U. S. Nuclear Reculatory Commssion Washington, D. C. 20555