ML20132A552
| ML20132A552 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/27/1996 |
| From: | Shell R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-96-001, IEB-96-1, NUDOCS 9612160152 | |
| Download: ML20132A552 (5) | |
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e IUA Tennessee Vaney Autnanty Post Ort:ce Box 2(X)0 Sod @Oasy Tennessee 3?379 November 27,1996 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:
In the Matter of
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Docket Nos. 50-328 Tennessee Valley Authority
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SEQUOYAH NUCLEAR PLANT (SON)- NRC BULLETIN 96-01," CONTROL ROD INSERTION PROBLEMS" REPORT
Reference:
TVA letter to NRC dated April 5,1996, Sequoyah Nuclear Plant (SON) and Watts Bar Nuclear Plant (WBN) Response To NRC Bulletin 96-01,
" Control Rod Insertion Problems" dated March 8,1996 TVA is providing the control rod-drop time data for the recent Unit 2 forced outage of October 1996, as committed in response to NRC Bulletin 96-01. The data for the rod-drop tests performed on November 1,1996, and the fuel burnup times are included as an enclosure to this letter. The rod-drop times and fuel burnup for each rodded fuel assembly at the start of the Unit 2 Cycle 8 operation is also included for comparison.
The control and shutdown rods exhibited rod recoil during the November test. During the reactor trip initiated on October 10,1996, all rods fully inserted into the core with no observed discrepancies.
fJeW 9612160152 961127 PDR ADOCK 05000328 l
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i U.S. Nuclear Regulatory Commission Page 2 November 27,1996 1
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Please direct questions concerning this issue to Keith Weller at (423) 843-7527.
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Sincerely, r
R. H. Shell Manager SON Site Licensing and Industry Affairs this JPpjn Sworn to a subscribed b fore me 9
day of V/ru m le#>
1996 L
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Notary Public My Commission Expires /d/R//9P'
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Enclosure cc: See page 3
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1 U.S. Nuclear Regulatory Commission Page 3 November 27,1996 i
cc (Enclosure):
Mr. R. W. Hernan, Project Manager Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident Inspector Sequoyah Nuclear Plant 2600 lgou Ferry Road Soddy-Daisy, Tennessee 37379-2000 Regional Administrator -
U.S. Nuclear Regulatory Commission Region 11 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711
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ENCLOSURE SEQUOYAH NUCLEAR PLANT UNIT 2 FORCED OUTAGE, OCTOBER 1996 Unit 2 Cycle 8 Burnup vs Rod Position ROD BURNUP TYPE DROP TIMES Sec l
06/06/96 09/30/96 06/06/96 11/01/96 j
i SA D14 23253.95 25755.7 V5H 1.45 1.44 1
SA B12 23162.23 25670.01 V5H 1.3 1.32 SA M14 23195.01 25706.34 V5H 1.45 1.39 SA P12 23206.7 25703.36 V5H 1.35 1.32 SA P4 23208.12 25720.86 V5H 1.35 1.32 SA M2 23270.88 25774.45 V5H 1.45 1.37 i
SA D2 23142.99 25648.68 V5H 1.45 1.43 SA B4 23189.56 25684.38 V5H 1.35 1.33 I
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SB J13 20782.46 26043.61 V5H 1.3 1.28 SB G13 20797.71 26062.53 V5H 1.3 1.31 SB N9 20778.45 26038.4 V5H 1.3 1.29 i
SB N7 20791.46 26054.89 V5H 1.3 1.32
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'SB C9 20818.14 26088.32 V5H 1.3 1.26 SB C7 20790.64 26053.67 V5H 1.3 1.25 SB J3 20786.73 26048.77 V5H 1.3 1.32 l
SB G3 20783.86 26045.37 V5H 1.3 1.32 SC L13 0
5270.91 V5H 1.3 1.3
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SC C11 0
5273.11 V5H 1.3 1.25 SC NS 0
5277.95 V5H 1.3 1.29 SC E3 0
5273.74 V5H 1.4 1.33 SD E13 0
5269.56 V5H 1.3 1.31 SD N11 0
5285.21 V5H 1.3 1.26 SD C5 0
5271.33 V5H 1.25 1.26 SD L3 0
5274.36 V5H 1.3 1.31 CA K8 0
5189.04 V5H 1.3 1.29 CA H10.
0 5179.2 V5H 1.3 1.29 CA H6 0
5187.44 V5H 1.3 1.29 CA F8 0
5183.46 V5H 1.' 3 1.29 CB K14 0
4507.78 V5H.
1.4 1.31 CB F14 0
4505.5 V5H 1.4 1.36 CB P10 0
4507.83 V5H 1.25 1.29 CB B10 0
4511.81 V5H 1.3 1.29 CB P6 0
4513.97 V5H 1.3 1.29 CB B6 0
4497.53 V5H 1.3 1.29 CB K2 0
4505.87 V5H 1.4 1.37 CB F2 0
4516.3 V5H 1.4 1.36 CC H2 0
4930.61 V5H 1.35 1.29 CC K6 22215.23 26850.95 V5H 1.3 1.25 CC F6 22185.65 26815.2 V5H 1.3 1.26 CC P8 0
4954.09 V5H 1.3 1.29 CC B8 0
4933.25 V5H 1.3 1.26 CC K10 22186.99 26816.81 V5H 1.3 1.23 CC F10 22248.99 26891.75 V5H 1.3 1.27 CC H14 0
4954.4 V5H 1.35 1.33
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.s Unit 2 Cycle 8 Burnup vs Rod Position ROD BURNUP TYPE
. DROP TIMES Sec 06/06/96 09/30/96 06/06/96 11/01/96 CD M12 23597.84 28425.29 V5H 1.3 1.29 CD H12 0
5390.4 V5H 1.2
-1.28 CD D12 23545.58 28362.33 V5H 1.3 1.29 CD M8-0 5394.82 V5H 1.3 1.31-CD H8 18077.02 22102.38 V5H 1.4 1.34
-CD D8 0
5394.84 V5H 1.3 1.29 _
.CD M4 23567.04 28388.18 V5H
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1.27 CD H4 0
5392.91 V5H 1.4 1.37 CD D4 23597.74 28425.16 V5H-
'L.4 1.29 i
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