ML19340A534
| ML19340A534 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 02/28/1964 |
| From: | Bower D COMMONWEALTH EDISON CO. |
| To: | Lowenstein R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8008250840 | |
| Download: ML19340A534 (4) | |
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February 20, 1964 Ch
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Mr. Robert lowenstein, Directcr
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U. S. Atomic Energy Commission j LAwy a t r.:e,
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I Dear Mr. Lowenstein t On August 29, 1963, Commonwealth Edison Company made application to the Atomic Energy Commission for pemission to change the requirements of License DPR-2 regarding the frequency of control drive and blade testing.
We ha rs not received authorization to chanEe the frequency of the control rod drive testing to date.
The last time the control rod drives were tested was on November 10 and 11, 1963, as per special authorization received on October 31, 1963. The hasults of this testing are attached for your information. There were no abnorinal trends and we feel confident that the drives are in good operating con dition. The drives have also been exercised at least once each day and the control rod following has been verified once a week.
We are now in the first quarter of 1964 and are expecting to shut the plant down for partial refueling on April 12 or 19, l'.54 Because the operation of the drives has been fully satisfactory since the November 12, 1963 startup, we respectfully request temporary authorization to postpor.e the re-quired control rod drive testing until the April shutdown.
As Dr. Bryan has been informed by phone, the Dresden reactor is to be shut down on March 4 for a four-day period for physics tests and certain maintenance work.
However, due to the amount.:f work we intend to do during this period, we would be hard pressed to include the control md drive testing without perhaps lengthening the outage time.
Your granting of this short extension will helpfully reduce the additional testing on the control rod drives which was one of our original reasons for asking for the change in license requirements.
Due to the limited time before the physics tests outaBe March 5 through 8, we would sincerely appreciate it if prompt action and advice can be given on this request.
Very truly yours, Submit.ted and suom to before me this./' '7 day of February,
C0".MONWEALTH EDICON C0"PANY
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i DRESDEN NUCLEAR POWER STATION OUARTERLY SCRAM AND FRICTION TEST DATA Data for rebuilt drives after February, 1961.
4 Scram times are in seconds and. are for single drive scrams.
Unit for friction pressure is psi.
Quarteriy quarterly Scram Test Friction Test 11/10/64 11/10/64 Accum.
Drive S erial To In No.
Location No.
Buffer Buffer F-5 1267 1.33 0.35 71
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G-9 1227 1.23 0.41 93 K-6 1247 1.34 0.45 71 F-9 1238 1.34 0.45 86 2
J-8 1228 1.36 0.57 91 H-5 1239 1.46 0.51 79 F-7 1313 1.41 0.44 81 2
3 J-9 1254 1.43 0.42 70 G-4 1280 1.43 0.68 89 F-10 1263 1.36 0.52 95 4
J-6 1276 1.44 0.69 78 F-3 1311 1.50 0.52 65 H-8 1287 1.34 0.53 79 5
K-5 1230 1.34 0.39 76.
G-3 1271 1.32 0.37 91 F-8 1317 1.31 0.41 84 6
K-7 1231 1.27 0.60 65 H-3 1283 1.30 0.50 70 F-4 1237 1.37 0.34 82 7
H-7 1229 1.61 0.27 85 J-3 1295 1.36 0.63 79 H-9 1306 1.50 0.46 69 8
G-6 1314 1.49 0.59 69 F-2 1277 1.51 0.47 73 G-5 1312 1.48 0.45 107 9
K-4 1225 1.38 0.60 73 G-2 1268 1.37 0.38 79 i
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G-10 1274 1.46 0.81 76 10 G-7 1255 1.31 0.46 72 H-2 1270 1.47 0.65 71 1
F-6 1245 1.25 0.54 65 11 J-5 1253 1.17 0.42 74 J-2 1272 1.37 0.58 69 l
J-7 1235 1.24 0.60 76 12 J-4 1289 1.31 1.02 67 j,
F-1 1244 1.40 0.58 71 i
G-8 1266 1.34 0.48 66 13 H-4 1296 1.34 0.41 79 I-G-1 1297 1.51 0.63 77 i
D-8 1249 1.40 0.67 63 14 C-4 1309 1.54 0.33 62 D-1 1248 1.52 0.65 86 3-7 1308 1.53 0.77 67 15 3-4 1262 1.50 0.67 74 E-L 1293 1.47 0.57 66 E-6 1252 1.58 0.78 73 j
16 3-5 1285 1.56 0.58 65 3-2 1291 1.53 0.36 65 D-10 1243 1.52 0.69 74 17 D-7 1240 1.42 0.43 71 3
C-2 1257 1.51 0.51 95 1
D-5 1226 1.38 0.49 90 18 A-4 1234 1.38 0.67 69 1
D-2 1256 1.60 0.63 65 C-9 1290 1.58 0.66 77 19 D-6 1316 1.55 0.36 71 E-2 1269 1.54 0.57 73 4
E-4 1278 1.77 0.64 75' 20 C-7 1288 1.57 0.51 82 l
B-3 1294 1.55 0.72 76 i
E-8 1260 1.52 0.45 74 21.
A-7 1310 1.61 0.53 69 C-3 1307 1.48 0.51 87 f
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C-8 1315 1.45 0.60 80 22 A 1233 1.51 0.69-67 D-3 1241.
1.47-0.49 69
e E-10 1273 1.53 0.60 73 23 B-6 1275 1.52 0.50 64 E-3 1281 1.40 0.39 62 E-7 1282 1.47 0.58 69 24 B-9 1286 1.55 0.66 84 D-4 1242 1.55 0.50 87 E-9 1246 1.56 0.42 74 25 B-8 1265 1.53 0.94 77 C-5 1258 1.50 0.54 70 E-5 1251 1.48 0.34 64 26 3-9 1261 1.50 0.55 66 A-6 1292 1.51 0.50 73 H-6 1250 1.65 0.33 43 27 C-6 1259 1.50 0.40 66 Spare 1232 Spare 1264 Spara 1284 Spare 1279 Spare 1319
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