ML17303A353
| ML17303A353 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 08/28/1978 |
| From: | Horne J BECHTEL GROUP, INC. |
| To: | |
| Shared Package | |
| ML17303A352 | List: |
| References | |
| KSV-20-T, TAC-64398, NUDOCS 8704010589 | |
| Download: ML17303A353 (8) | |
Text
XEROX TELECOPIER
'295 3-11-'7: 5:36 AM; CCITT G3 +
9445662 J
111 Mar 12 87 07:34 GC-RECXP GENERAL Grove City 412-458-8000 e:-:t.
4129 TORSXOGRAPH TEST REPORT KSV-20-T BECHTgL FOR ARXSONA PUSLXC SERVXCE CO.
PALO VERDE NUCLEAR GENERATXNC STATXON 80 0391 SN-7183 P.l Qi)
This unit, completely assembled with its flywheel and generator, was torsiographed in Grove City, Pa.,
on 8-l7-78, to confirm the results of the torsional analysis.
The torsiograph instx'umetation consisted of two Statham ASXTC 350 accelerometers mounted at. a 13" radius on a bar bolted to the free end of the generator shaft, Michigan Scientific S-4 slip ring, Ellis BAN-1 amp';ifier, EMR>>1510 analyser, and Hewlett-Packard 7035B plotter.
The engine was torsiographed at 1oads, of 5000,
- 5500, and 5900 kw 600 rpm; at 5500 kw, 570 to 610 rpm; and at zero.
- load, 540 to 600 rpm.
The predicted and measured torsional natural frequencies for this unit al e Mode Natural Frequency - cpm Predicted Measured l
2 3
4 5
127 l459 4097 4525 5969 1430 4010 6060 The first and fourth modes are associated with the forward end auxiliary drive assembly and are not measurable at the generator shaft.
These modes have no significant affect on the stresses in the engine shaft system.
All of the measured, natural frequencies are within 2% of the predicted values.'he predicted and measured shaft stresses
(- ksi) at 600 rpm are:
8704010589 870ggy PDR "ADOCN QQQQQQQQ Foe
<gg
9445662 J
Ol2 XEROX TELECOPlER 295 3-1'l 97: 5:36 AH:
CClTT 63 +
Mar 12,87 07:35 GC-RECAP GENERAL Grove Citg 412-45S-SOOO e:-:t.
41 9
Page 2
- p. 12 Order 0
Crank-shaft W
Gen.
Sha'ft Predicted 00 kw Crank-Gen.
shaft Shaft Measured 00 Crank-:
- Gen, shaft Shaft Crank-shaft V
Ger Bha 1-1/2 2
2-1/2 3
3-1/2 4
5 5-1/2 6
6-1/2 7
7-1/2 8
8 I./2 9
9-1/2 10
.31
.17 2.26
.07
,89
.90
.08
.64
.03
.33
~ 72 01
.18 0
.01 F 01
.01
.0
.08
,05
.61
.02
.29
- 03
.24
.01
.13
.01
.02
.08
.20
.18
- 1. 67
-06
.57
.02
.60
.07
.49
.03
.48
.01 F 01
.Ol
.05
.05
.17
,01
.02
.18
.Ol
.,21
.20
.10
.01
.02
.06
.02
.22 14'.79
.07
.62
.02
.65
.08
.52
.41
.Ol
.13
.01
.01
.02
.06
.04
.02
.18
.Ol
.21
.03
.19
.01
~ 23
,01
.09
.02
.06
.01
~ 23 1.92
.07
.67 02'68
.09
..54
.03
.51
.Ol
.13
-01
.01
.02
.C
.0
.Q
.2
.0
.2:
.0:
Oc
.0.:
.Oi
.OE All of the significant stress levels are Less than t:he predicted values except for the 6-l/2 order, which is slightly higher due to the change in the third mode natural freauancy.
The measured maximum resonant stresses at 5500 kw are:
Mode Order
,Stress - ksi
+
Crankshaft Gen.
Shaft 2<<1/2 7
10 570 570 605 3.75
.98
.93
.09
41 i
XEROX TELECOPIER 295 3-11-87:
5:37 AI4:
CCI TT G3 +
9445662 I 813 H r 12,87 07:35 GC-REC1P GENERAL Grove City 412-458-8000 e..t.
4129 P. 1:.
Page 3
Pi<3 The measured stresses at
$00 rpm ax e all quite small, and all resonant stx'esses within -10% of 600 rpm are well within the normal limit of >5.0 ksi.
Thus these results indicate the torsional vibration characteristics of this unit are completely satisfactory.
Distribution:
M. J.
Helmich J.
W. Roader L.. S. Ulrey R. A. Miklos John M. Horne August 28, 1978
/)h
0 i
ATTACB1ENT 3 TORSIONAL VIBRATION ANALYSIS OF 'REPAIRED. CRANKSHAFT
'KSV-20-T SN-7187
III A,
0
~l 0