ML17261A993
| ML17261A993 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-TURB.3, NUDOCS 9003080374 | |
| Download: ML17261A993 (10) | |
Text
EOP:
AP-TUk.3 TURBINE VIBRATION REV:
5 PAGE 1 of 5 ROCHESTER GAS AND ELECTRIC CORPORATIO GINNA STATION ONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIE DATE 4 6
P T SU RI TE DENT
~~-
o FECTIVE D TE QA NON-QA REVIEWED BY:
TEGORY 1. 0 GINNASTATION START:
DATE IME COMPLETED:
DA E
~
TIME 9003080374 900 27 PDR ADOCK 05,00244 F
PNU
AP-TURB.3 TURBINE VIBRATION REV:
5 PAGE 2 of 5 A.
PURPOSE - This procedure provides the necessary actions to be taken in the event of increasing turbine vibrations.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of TURBINE VIBRATION are; a.
Annunciator I-27, Rotor Eccentricity or Vibration alarm is lit.
b.
Increasing or High Turbine Vibration detected.
EOP:
AP-TURB.3 TURBINE VIBRATION REV:
5 PAGE 3 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o The exciter bearing No.
9 is not as limiting as the turbine bearings Nos.l through 8.
o Step 1 is an IMMEDIATE ACTION step.
O 1
Check Turbine Vibration:
o Bearings No.
1 through No." 8-LESS THAN 14 MILS o
Bearing No.
9 - INDICATION ON SCALE Perform the folloving:
- a. Trip the turbine.
b.
Go to AP-TURB.l, TURBINE TRIP VITHOUT RX TRIP REQUIRED OR E-O, REACTOR TRIP or SAFETY INJECTION, as required.
EOP:
AP-TURB. 3 TITLE:
TURBINE VIBRATION REV:
5 PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check No.
9 Bearing Vibration LESS THAN 14 MILS Initiate load reduction to decrease vibrations.
IF vibrations THEN shutdown 0-2.1, NORMAL SHUTDOWN).
can NOT be reduced, the plant, (Refer to SHUTDOWN TO HOT CAUTION IF AT ANY TIME VIBRATIONS EXCEED 14 MILS, RETURN TO STEP 1.
3 Check Turbine Vibration:
- a. Bearings No.
1 through No. 8-LESS THAN 7 MILS
- a. Attempt to stabilize vibration as follows:
o IF increasing turbine speed, THEN stop speed increase and evaluate.
- b. Bearing No.
9 - LESS THAN 7 MILS o
IF generator on line, THEN begin reducing load to stabilize vibrations.
- b. Attempt to stabilze vibrations as follows:
o Ad]ust generator hydrogen temperature,
-OR-o Adjust turbine lube oil temperature,
-OR-o Adjust exciter cooling.
I
EOP:
AP-TURB.3 TITLE:
TURBINE VIBRATION REV:
5 PAGE 5 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Verify Turbine Vibrations STABLE OR DECREASING Continue reducing load until vibrations are stable or decreasing, OR Take unit off line, if necessary.
(Refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN) and go to Step 6.
5 Stop LOAD REDUCTION I
6 Check The Turbine Generator For Unusual Noises:
o Turbine generator NO UNUSUAL NOISES IR unusual noises detected, THEN notify the Maintenance Manager.
7 Complete HIGHER SUPERVISION NOTIFICATION
-END-