ML17300A820

Torsiograph Test Rept of KSV-20-T.

ML17300A820
Person / Time
Site:	Palo Verde
Issue date:	08/28/1978
From:	Horne J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:
Shared Package
ML17300A819	List: ML17300A820 ML17300A821
References
NUDOCS 8705110270
Download: ML17300A820 (6)

Text

1-8736: 36 AH: CCIT 3 + 9445662 l f11 XEROX tELECOP IKR 295 3 Mar 12,87 07:34 GC-RECIF GENERAL Grove City 412-458-8000 eat. 4129 P.ll TORSIOGRAPH TEST REPORT C8 KSV-20-T BECHTPj FOR ARIZONA PUBLIC SERVICE CO-PALO VERDE NUCLEAR QENERATINQ STATION SO 0391 SN-7183 This unit, completely assembled with its flywheel and generator, was torsiogxaphed in, Grove City, Pa., on 8-17-78, to confirm the results of the torsiona1 analysis.

The torsiogxaph instrumetation consisted of two Statham ASXTC 350 accelerometers mounted, at a 13" radius on a bar bolted to the free end of the generator shaft, Mi~higan Scientific 8-4 slip xing, Ellis BAN>>l amplifier, EMR-1510 analyser, and Hewlett-Packard 7035B plotter. The enqine was torsiographed at loads, of 5000, 5500, aKd 5900 kw 600 rom; 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 are!

Mode Natural Frequency - cpm Predicted Measurecl 127 1459 1430 4097 4010 4525 5969 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:

Q7QQQ g0270 ADOCK 05000530 87050'DR p PDR A T~A ~N Sf'= m y"

~ I

" 1-87: 5: 36 AM; CC l 7 3 + 9445662: 512 XEROX TELECOP E'ER 295 3

\

City 412-458-8000 eat. 4129 P.12 Mar 12,87 07:35 GC-RECIP GENERAL Grove Page 2 C~)

Predicted Measured 0 00 kw 00 W Crank- ,Qen. Crank- Gen. Crank- Gea. Crank- Ge~

Order shaft Shaft. shaft Shaft shaft Shaft shaft Shc 1-1/2 .31 .08 ~ 20 ~

~ 05 .22 -06 ~ 23 2 ~ 17 ~ 05 ~ 18 +05 .14 .04 2-1/2 2-26 .61 1.67 .45 .48 1. 92 3 -07 .02 -06 .02 ,07 .02 ,07 .C 3-1/2 ~ 89 -26 -57 ~ 17 .62 .18 ~ 67 4 .02 .Gl .02 ~ Ol .02 4-1/2 -90 ~ 29 .60 .65 ~ 21 .68 5 -08 '03 .07 ~ 02 -08 .03 ~ 09 op S>>l/2 ~ 64 ~ 49 ~ 18 .52 .19 .54 4 2

-03 .01 .03 .01 .03 .Ql -03 .0 6

6 1/2 ~ 33 -15 '48 ~ 21 .51 ~ 23 -51 4 2 7 ~ 72 36 .40 .20 ~ 41 ~ 21 7-1/2 F 01 .OL iQL F 01 .01 ~ 0:

8 .18 .13 >>13 -10 .13 .09 Pl s-l/2 .Ol .01 -03. .01 -Ol ~ 0:

9 ~ 01 .01 -OL .02 .01 .02 F 01 9-1/2 -01 .02 .02 .06 .02 .06 -02 .Qt 10 F 01 .08 -02 -01 ~ 03 All of the significant stress levels are less than the predicted values except for the 6-1/2 order, which is slightly higher due ta the change in the third mode natural frequency.

The measured maximum resonant. stresses at 5500 kw are:

Order Stress - ksi

'93 Made Crankshaft Gen. Shaf t 2-1/2 670 3.75 7 570 .98 .45.

10 605 .09

~ l

't.KVx. IKLr,t ur'It.K 4oo 3 -i >-or ~ Q.or 44 I I I VD '7 o t'tvooc e rIo 07:35 GC-. CIP GENERAL

~M'ar'12,87 Grove City 412- 58-8000 eat. 4129 p. 1, Page 3

+/i)

The measured stresses at resonant stresses within 00 rpm axe

$-10% all quite small, and all of 600 @pm are well within the normal limit of ~5.0 ksi. Thus these results indicate the torsional vibration characteristics of this unit are completely satis2actory.

John M. Horne August 28, 1978 Distribution:

M. J. Helmich J. N. Roeder-L. S. Ulrey R. A. Kiklos

/)h

~ I