Progress Report (Task 5 Continue 1)

SAUDI ELECTRICITY COMPANY

GENERATION TECHNICAL SUPPORT DEPARTMENT

PROGRESS REPORT

TASK#5 (CONTINUATION 1)

IDENTIFY THE DUTIES AND RESPONSIBILITIES OF OPERATION

SECTION

(GAS TURBINE MS7001E GT-1/2/3)

DONE BY: KHALID ABDULLAH AL-QARNI

LOCATION: ASSER POWER PLANT

DATE: 01/05/16 TO 12/05/16

ENG. KHALID AL-GARNI

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PROGRESS REPORT: TASK#5 CONTINUE 1

TABLE OF CONTENTS

INTRODUCTION……………………………………..………………………………………………….3

GAS TURBINE MS7001EGT 1/2/3)….………………………………………………………………3

PRE-START CHECK...………………………………………………………………………………………4

FAMILIARZATION WITH GAS TURBINE SYSTEMS…...…………………………………………….5

- LUBE OIL SYSTEM ……………………………………………………………………………………….5-8

- HYDRALLIC OIL SYSTEM………………………………………………………………………………9-11

- TRIP OIL SYSTEM……….…………………...……………………………………………………………...12

NEXT REPORT…...……………………………………………………………………………………...13

CONLUSION……………………………………………………………………………………………...13

REFRENCES……………………………………………………………………………………………...13


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INTRODUCTION

Since I joined operation section I got to know about organization chart for operation section, duties and

responsibilities of shift supervisors which includes log book, initiate notification through SAP and update the

generation operation information system (GOIS) for units status. currently, I am learning the operation of

GT#1, 2 & 3 through knowing the pre-start check list and also, auxiliary systems. In the following report

specifically, I will write about Pre-start check list, lube oil system, hydraulic system and trip oil system.

GAS TURBINE MS 7001E GT (1/2/3)

Asser Power Plant has a three GE gas turbines frame 7001E (Gt 1, 2 & 3) and each one approximately can

provide up to 50MW. Also, it is an axial flow turbine consists of 17 stages of rotors and stators. In addition,

turbine consists of three stages stators and rotors. The systems in gas turbine are the following:

Lube Oil System

Hydraulic System

Liquid Fuel System

Trip Oil System

Atomizing Air System

Cooling Water System

Cooling and sealing Air System


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PRE-START CHECK

FRAME MS 7001E GT (1/2/3)

ELECTIRCAL MECHANICAL

ITEMS STATUS ITEMS STATUS

125V DC Panel Board and related

breakers

On Check Cooling Water Tank

Pressure

Normal

110,220 & 480V AC Panel Boards

and all related breakers

On Check Lube Oil Tank level Normal

Breaker For Aux. Hydraulic & Lube

Oil Pump

On & Auto Lube Oil level of Main Fuel

Pump

Normal

Breaker for Emerg. Lube Oil Pump

88QE

On Fuel Forwarding Skid; all

related valves

Open

Breaker for Motor of Booster

Compressor 88AB

On & Auto Inlet Fuel valve( Old Or New) Open

Breaker for Turning Gear Motor

88TG

On & Auto Fire System and CO2 Tank Normal

Breaker Load coupling cooling fan

88VG-1

On & Auto All Compartments Doors Close

Breaker Turbine exhaust frame

blower Fan 88TK1 & 88TK2

On Lube Oil Mist Elim systems

for turbine and generator in

service

Normal

Breaker for Lube Oil tank heater

23QT

On & Auto

Breaker Pulse air compress Motor

AF

On & Auto

Breaker for C.W.pumps and fans

control panel

On

Breaker for Cranking Motor On

Breaker for Generator space heater On & Auto


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FAMILIARIZATION WITH GAS TURBINE SYSTEMS

As mentioned above Ge frame 7001E has seven systems below are three of them. The remaining

systems I did not take them yet.

- LUBE OIL SYSTEM

I. WHY LUBRICATION SYSTEM

Lubrication system provides lubrication, cooling and absorb heat rejected by five bearings and

the accessory gear in order to extend equipment life.

Also, Provides source for Hydraulic and Trip Oil Systems

II. SYSTEM PARAMETERS AND COMPONENTS

The system is designed to provide filtered lubricants at suitable pressure, temperature and

viscosity.

a) LUBE OIL TANK

b) MAIN LUBE OIL PUMP

OPERATION

The pump will start working when starting motor rotates and builds up pressure, however not

sufficient since speed is low and therefor auxiliary pump will start with main pump at start up.

INFORMATION

Lube Oil System

Hydraulic System

Trip Oil System

2750 GAL


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c) AUXILIARY LUBE OIL PUMP

OPERATION

The auxiliary pump starts with the unit up to 95% speed and shut down. Again starts

when speed became 8%.

INFORMATION

Main Lube

Oil Pump

Type

Postive Displacment

(Gear)

Engineering

Characteristics

Discharge Pressure

100 P.S.I

Volume Flow Rate

460 GPM

Driver

Accessory Gear

Auxiliary Pump

Type

Dynamic

(Centrifugal)

Engineering

Characteristics

Discharge Pressure

100 P.S.I

Volume Flow Rate

460 GPM

Driver

AC Motor

460 V


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d) EMERGENCY LUBE OIL PUMP

OPERATION

The emergency lube oil pump starts when speed of unit became 6%

INFORMATION

Emergency Pump

Type

Dynamic

(Centrifugal)

Engineering

Characteristics

Discharge Pressure

20 P.S.I

Volume Flow Rate

260 GPM

Driver

DC Motor

120 V


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e) COOLER (HEAT EXCHANGER) i

OPERATION

The cooler function is transferring heat from returning oil and give it to cooing water.

INFORMATION

The cooler is shell and tube type (U)

f) FILTERSii

OPERATION

There are two Filters main function to catch impurities in oil. One in service and other is back up

and at 15 psig the pressure switch alarm activated.

INFORMATION

The type of filter is 5-micron (Nominal) pleated paper

i The cooler located inside the oil tank ii The Filters Located Inside the oil tank


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- HYDRAULIC OIL SYSTEM

i. WHY HYDRAULIC SYSTEM

Hydraulic system uses fluid power for operating control component. The function of the system is:

1. Operate fuel control valve

2. Fuel oil stop valve

3. Operate IGV

4. Source for trip oil system

ii. SYSTEM PARAMETERS AND COMPONENTS

System parameter is Pressure to be maintained in 1500 psi. The major components of hydraulic

system are:

A. MAIN HYDRAULIC PUMP

OPERATION

The pump will start working when starting motor rotates and builds up pressure from 25 psi up to

1500 psi, however not sufficient since speed is low and therefor auxiliary pump will start with

main pump at start up.

INFORMATION

B. AUXILIARY HYDRAULIC PUMP

OPERATION

The auxiliary pump starts with the unit up to 95% speed and shut down. Again starts when

pressure drop below 1350 psi.

Main Hydraulic

Pump

Type

Postive Displacment

(Piston)

Engineering

Characteristics

Discharge Pressure

1500 P.S.I

Driver

Accessory Gear


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INFORMATION

C. ACCUMULATOR

OPERATION

To absorb any supply shock at starting main pump and stabilize the pressure at 1500 psi.

INFORMATION

Piston type

Auxiliary Pump

Type

Postive Displacment

(Vane)

Engineering

Characteristics

Discharge Pressure

1500 P.S.I

Driver

AC Motor

480 V


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D. SYSTEM DIAGRAM


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- TRIP OIL SYSTEM

A. WHY TRIP OIL SYSTEM

Trip system is the primary protection for gas turbine interface between the turbine control and

protection system circuit.

B. SYSTEM PARAMETERS AND COMPONENTS

System parameter is Pressure to be maintained in 1500 psi to close fuel stop valve from hyd

system and 25 psi from lube oil system. Also, the main components are:

a. SOLENOID VALVE

b. PRESSURE SWITCH

c. INLET GUIDE VANE POSITION SENSORS

d. SYSTEM DIAGRAM


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NEXT REPORT After two weeks I will write about the other systems such as fuel system and other systems. Also, attend

more start up and shut downs. I have some case studies to be delivered soon.

CONCLUSION At conclusion, I got to know the pre-check list before operation. In according to, systems of gast turbine

frame 7001E specially lube oil, hydraulic and trip oil. In next few weeks I will complete all system for frame

7001 E as per PDP plan at operation section. Finally, I would like to thank engineer Mustafa for great support.

REFERENCE

- Special Thanks to Operation Engineer (Mustafa)

- Operators

- Web sites

Documents

Progress Report (Task 5 Continue 1)