JA-5_Appx_4_Tab_01 _cover_ _contents.pdf

TETRAD Services Inc.

960 Diamond Ave. Red Bluff CA. 96080

Ph: (530)527-5889/(503)637-3340 Fax:(530)5278549

STEAM TURBINE REPORT

For

Eielson AFB

Eielson AFB, Alaska

Turbine Serial #: 7371 Equipment #: 3 Turbine Generator

P.O. #:

Req.#

Date: 4-10-2011 through - -2011

Prepared By;

Chris Coy

TETRAD Services Inc. 960 Diamond Ave. Red Bluff CA. 96080

TABLE OF CONTENTS

TAB

JOB SUMMARY 1

RECOMMENDATIONS 2

AS FOUND AND FINAL VIBRATION READINGS AND RUNOUT 3

TRIP AND THROTTLE VALVE & SAFETY VALVES 4

CONTROL VALVE 5

TURBINE SHELL 6

TURBINE ROTOR 7

DIAPHRAGMS 8

SHAFT & DIAPHRAGM PACKING 9

LUBRICATION SYSTEM 10

BEARINGS 11

CONTROL SYSTEM 12

GENERATOR 13

ALIGNMENT 14

START UP 15

CONDENSATE PUMPS 16

TABLE OF CONTENTS

CONTROL PANEL 17

JOB SUMMARY

Customer: Eielson AFB Station: Eielson AFB Alaska Unit: #3 Turbine Generator

Turbine Serial #:7371 Rating: 5 MW Type: Intlet Press.: 400 Steam Temp.: 650 F Extraction Press.: 100 Exhaust Press.:2 inches Hg Control System: Service Year:

Generator Serial #: 1S-9631 Type: KVA: 6200 RPM 3600 Form HL Volts: 7200 AMP ARM. 501 PF.8 KW: 5000 Phase 3 Cycle 60 Exc. Volts: 125 Field Amps: 250

Outage Start Date: 4-11-2011 Completion Date: 8-18-11

Outage Type: Major

JOB SUMMARY

The turbine generator major inspection was performed by Tetrad Services Inc. Tetrad Services performed all machine shop work needed ADA Generator Services performed the generator testing.

Mistras Inspection preformed the NDT work. Kenmar preformed the pre-shutdown and startup vibration recordings. The job was manned with two shifts working around the clock for the first week during the disassembly and discovery period. Starting the second week the job dropped the night shift and the day shift dropped back to ten hour days six days a week. The turbine and generator rotors were balanced on site by Tetrad Services prior to assembly.

The lube oil pumps, servomotors and actuators were sent out to the Hydraulic Center in Fairbanks for inspection and reconditioning. A new set of servos were installed and the reconditioned set returned for spares.