Summarize my report for my Professional Experience (co-op) training to 4000 word with taking care about the report REQUIREMENTS. the report REQUIREMENTS: 1-What was undertaken? What did you learn from...

INTRODUCTION, GOALS AND OBJECTIVES
INTRODUCTION
This report is about Professional experience which I have taken during training
period with Electricity Company. It is a great opportunity for any student who wants to
join the industrial world which is the real world for the engineers. In this world the
engineer will come to know that how he can utilize his knowledge in an organization.
GOALS AND OBJECTIVES
There are many objectives & targets in this Professional Experience programs.
Main objective of this program is to enable the students to get a chance to apply their
academic skills on a practical setting. Also, they can improve their chances of finding a
etter job after they graduate.
The main objectives of my Professional Experience program are as follows:
• To work in the real world to improve the academic skills secured in college periods.
• To learn how to be an active employee of a company.
• To increase the meaning and purpose of student studies.
I had a chance to work in a well known company of electrical field “Saudi Electric
Company (SECO)”. SECO has provided me the complete training and I am going to
produce this report, which is required, about my learning in this organization during my
training period.
THERMAL POWER PLANT & QURRAYH POWER PLANT
THERMAL POWER PLANT
In thermal power stations, mechanical power is produced by a heat engine, which
transforms thermal energy, often from combustion of a fuel, into rotational energy. Most
thermal power stations produce steam, and these are sometimes called steam power
stations. About 86% of all electric power is generated by use of steam tu
ines. Not all
thermal energy can be transformed to mechanical power, according to the second law
of thermodynamics. Therefore, there is always heat lost to the environment. If this loss
is employed as useful heat, for industrial processes or district heating, the power plant is
efe
ed to as a cogeneration power plant or CHP (combined heat-and-power) plant.
QURAYYAH POWER PLANT
Qurayyah Power Plant is one of the largest power Generation units. The
department operates and maintains 4 X 625 MW steam power generation unites to
supply high quality electricity to its customers. The main milestones leading to
commercial operation are listed below:
Qurayyah Power Plant Ev
UNIT 4
UNIT 3
UNIT 2
UNIT 1
EVENT
Jun 23, 1990 Jan 02, 1990 May 1987 Oct 1986 Start Erection
Jan 14, 1992 Jan 04, 1991 July 20, 1988 -- Power
Receiving
May 20, 1992 Oct 08, 1991 Nov 26,1988 May 02, 1988 First Firing
Jul 26, 1992 Feb 19, 1992 Feb 28, 1989 Oct 08, 1988 First Steam to
Tu
ine
Aug 04, 1992 Mar 02, 1992 Mar 28, 1989 Oct 30, 1988 First On-line
Aug 22, 1992 Apr 11, 1992 Jun 27, 1989 Jan 04, 1989 First Full Load
Nov 17, 1992 Aug 13, 1992 Jun 27, 1989 Mar 28, 1989 Commercial
Operation
DIVISIONS-
Qurayyah Power Plant Department is divided into three divisions: Technical and Support
Division, Operation Division and Maintenance Division.
Schematic Diagram of Qurayyah Power Plant Administration
Technical and Support Division: - Responsibilities
1- Material Unit: To supply unfounded material such as, bearings, gasket ...etc.
2- Planning Unit: To a
ange appointment of maintenance.
3- Engineering unit: To solve Critical problems
Operation Division: - Responsibilities
1 - Observing Process and performance of equipments
2- Isolate or operate any equipment.
All of these works are done by a latest microprocessor technologist and it is called as DCIS.
Maintenance Division: - Responsibilities
1- Routine inspection
2- Co
ective maintenance
3- Preventive maintenance
4- Breakdown maintenance
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5- Spare & maintenance planning
According of the type of work, Maintenance Division can be dividing into four sections:
1- Mechanical Maintenance
2- Workshop Maintenance
3- Electrical Maintenance.
4- Instrument Maintenance.
STEAM POWER PLANT CYCLE
All steam power plant works on the principle of Rankine cycle
In Qurayyah Power Plant the same Rankine cycle is applied but with one step more i.e.
Reheat step:
Rankin Cycle
QURAYYAH POWER PLANT CYCLE
We will consider all major part on it.
Qurayyah Power Plant Cycle
Main Boiler
There are four Mitsubishi steam generations to drive each of the four tu
ines at Qurayyah.
The boiler is Radiant, Reheat, Controlled Circulation, Tangential Tilting Corner fired type. Steam
is generated at 173 bar, 541 C at the super heater and at 41.1 bar, 541 C at the re-heater.
QPP Boiler is controlled circulation, positive draft, radiant reheat, hanger, divided furnace type.
It differs than the natural circulation Boiler due to tow characteristic.
Main Boile
Boiler Drawing
Boiler maximum rated output is 2080 ton/hour at 541C at the super heater outlet, and 1745
ton/hour steam flow at 541C steam temperature at the Reheater outlet. The steam pressure is
173 bars at super heater outlet. QPP Boiler can burn oil or gas individually or combination.
Boiler Hunge
Main components of boiler are Economizer, Steam Drum, and Furnace.
Economizer:
To preheat the feedwater before it enters the steam drum. Feedwater is preheated by using
heat recovered from the flue gas leaving the Boiler. This preheating increase overall unit
efficiency
Economizer
Steam Drum:
To supply feedwater to the seam generation circuit and steam to the superheated, The
Steam Drum contains moisture separation equipment to remove moisture.
Waterwall Tubes:
To abso
the heat produced by the combustion of fuel in the furnace, and transfer this heat
to boil the feedwater and
produce steam.
Waterwall Tubes
A Cross Section of the Boiler with its Main Components
Main Tu
ine
There are four Mitsubishi steam tu
ines at Qurayyah, driven by steam from its own boiler unit.
Steam is supplied on the tu
ine inlet is at 166 bar and 538C. The reheat inlet condition are 38
ar and 538C. There are 8 Regenerative Feed Water (FW) Heaters: FW Heater 1, 2, 3, 4, 6, 7&
8. Dearator is considered as FW Heater No. 5. HP/LP Bypass system is also provided.

Cross Section of a Tu
ine
Inside Tu
ine
Main Condenser

Condenser transfers the heat of the vaporization from the tu
ine exhaust steam to circulating
water system. The condenser hot well acts as a collection point for the condensate water. The
circulating water removes the waste heat that must be rejected in the main condenser as part of
the steam tu
ine cycle.
LP Heaters: In the first stage of returning the condensate to the boiler, condensate pumps
emove the condensate from the condenser hot well and pump it through a series of LP heaters.
These are a
anged in stages to heat the condensate progressively.
Deaerator: To avoid oxygen co
osion of the boiler’s internal surfaces, especially at higher
pressures, it is very important to deaerate the boiler feed-water because its oxygen content
should not exceed 0.005 mg/l.
HP Heaters: Boiler feed pumps take the feed water from the deaerator storage tank and pump
it through a series of HP heaters.



HP Feedwater heater No.6
Intake Area & Water Treatment Plant
Seawater enters the Qurayyah power plant Intake through underwater pipes to each pump
(4 pumps for each unit). The incoming water flows through bar screen where large fragments
are captured & avoid entering in to the system.

Desalination Plant:
There are three Desalination Plant Multi Stage Flash type units meeting the water needs of
QPP & Each unit has capacity of 4000 tons/day.
Each of the desalination units produce 4000 cubic meters of distilled wate
day. The
desalination units use multi-stage flash (MSF) evaporation process to transform sea water...