Allied Engineering & Services (Pvt.) Ltd

Acknowledgement

In the name of ALLAH, The Most Beneficent, The Most Merciful who has provided me the opportunity to be a part of Allied Engineering & Services (Pvt.) Ltd. I am also very thankful to lot of colleagues who took the time and trouble to teach, advice and guide me through their knowledge and practical work. Their marvelous attitude, behavior, style, personality and the way of talking and solving all my questions were spectacular. All of them supported me by showing different methods of information collection about the company, they helped me all the time when I needed and gave me right direction towards completion of Internship.

My special thanks to Mr. Ali Ahsan and entire staff of Allied Engineering & Services (Pvt.) Ltd. for guiding me in such better way that I can now use my knowledge to facilitate people.

Overview of the Organization

Allied Engineering & Services (Pvt.) Ltd, founded in 1976, is the authorized dealer for Caterpillar Earthmoving Machinery and Power Generation Equipment in Pakistan. Caterpillar products are renowned worldwide and are global leaders in power generation and earthmoving machinery in respective industries. Allied Engineering & Services (Pvt.) Ltd. and is the sole dealer of Caterpillar products in Pakistan since 1976 supporting over 2500 MW in Pakistan. Headquartered in Karachi, Allied Engineering & Services (Pvt.) Ltd., has offices in geographically strategic locations (Lahore, Islamabad, Multan, Faisalabad, Peshawar and Quetta). Our trained and qualified engineers are available 24 hours to provide the required support, both during and after the warranty period. Caterpillar gas generators along with Allied Engineering & Services (Pvt.) Ltd. backup support has emerged as the market leader for base load application with more than 60% market share. With new fuel efficient and longer overhaul interval engines being introduced every year, customers can be confident that this combination will remain market’s choice for many years to come. 

Allied Vision:·         Offer total solutions to customers including rental , buyback option , BOT and operational contracts

·         Be the market leader in everything we do·         Employ the best staff available in country·         Empower employees·         Develop first class facilities , equipment & tooling·         Use 6 sigma methodology as a process for continuous improvement as a way of life at Allied·         Exceed customer needs & expectations·         Create a culture of immediate customer service & quickly resolve customer complaints

 

Allied Mission:To be ahead of the customer needs, offer value added services, products & superior technology.

Internship Site(Pakistan International Airlines)

Gas Compression Engine G3516OVERVIEW:

G3516 engine brings versatility, uptime, and low operating cost to your gas compression operation. They are equipped with ADEM A3 technology that enables highest performance and safety while maintaining low emissions. Ideal applications for G3516 engine include gas lift, gas gathering, and wellhead gas compression.

Cat G3516 gas engine. Ratings: 492-1000 bkW (660-1340 bhp) 1200-1400 rpm are NSPS site compliant capable with customer-provided air-fuel ratio control and after treatment.

Engine Specifications

Engine Model: G3516

Year: 2003

Apparent Power: 1218 kVA

Power: 975 kW

P.f: 0.8

Frequency: 50 Hertz

Type: Stand By

3 Phase – 6 wires

Generation: 400V 1758 Amperes

Excitation: 18V 4.6 Amperes

G3516 STANDARD EQUIPMENTAIR INLET SYSTEM

Air cleaner — intermediate-duty with service indicator

CONTROL SYSTEM

A3 ECU

Air-fuel ratio control

COOLING SYSTEM

Thermostats and housing

Jacket water pump

Aftercooler water pump

Aftercooler core for sea-air atmosphere

Aftercooler thermostats and housing

EXHAUST SYSTEM

Watercooled exhaust manifolds

FLYWHEELS & FLYWHEEL HOUSINGS

SAE No. 00 flywheel

SAE No. 00 flywheel housing

SAE standard rotation

FUEL SYSTEM

Gas pressure regulator

Natural gas carburetor

IGNITION SYSTEM

A3 ECU

INSTRUMENTATION

PL1000 Advisor panel

LUBRICATION SYSTEM

Crankcase breather — top mounted

Oil cooler

Oil filter — RH

Oil bypass filter

Oil pan — shallow

Oil sampling valve

Turbo oil accumulator

MOUNTING SYSTEM

Rails, engine mounting — 254 mm (10 in)

PROTECTION SYSTEM

Electronic shutoff system

Gas shutoff valve

GENERAL

Paint — Cat yellow

Vibration damper and guard — dual 484 mm (23 in)

G3516 OPTIONAL EQUIPMENTAIR INLET SYSTEM

Remote air inlet adapters

Precleaner

CHARGING SYSTEM

Battery chargers

Charging alternators

COOLING SYSTEM

Aftercooler core

Thermostatic valve

Temperature switch

Connections

Expansion and overflow tank

Water level switch gauge

EXHAUST SYSTEM

Flexible fittings

Elbows

Flange

Flange and exhaust expanders

Rain cap

Mufflers

FUEL SYSTEM

Low pressure gas conversions

Propane gas valve and jet kits

Fuel filter

LUBRICATION SYSTEM

Oil bypass filter removal and oil pan accessories

Sump pump

Air prelube pump

Lubricating oil

MOUNTING SYSTEM

Rails

Vibration isolators

POWER TAKE-OFFS

Front accessory drives

Auxiliary drive shafts and pulleys

Front stub shaft

Pulleys

PROTECTION SYSTEM

Explosion relief valves, status control box interconnect wiring harness

STARTING SYSTEM

Air starting motor

Air pressure regulator

Air silencer

Electric air start controls

Electric starting motors — dual 24-volt

Starting aids

Battery sets (24-volt dry), cables, and rack

GENERAL

Flywheel intertia weight

Guard removal

Engine barring group

Premium 8:1 pistons

Premium cylinder heads

AESL Maintenance Instructions

- In daily reports must be written pending jobs related to the plant. - Housekeeping should be proper.- Schedule proper cleaning of all Electrical panels.- Inform every shutdown/pending jobs to concerned manager service

coordinator.- Note down the max torque load.- Safety should be properly checked every 3 months.- Scheduling of main gas filter SSGC and maintain this record.- Scheduling of main gas street filter by Allied staff and maintain this

record.- Monitoring of grounding and maintain this record.- Maintain coolant level and maintain this record.

Short Circuit (SC)

A short circuit is an abnormal connection between two nodes of an Electric circuit intended to be at different voltages. This may lead to circuit damage overheating or explosion.

Circuit breaker

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect fault condition and interrupt condition flow.

Current Transformer (CT)

A current transformer is used for measurement of alternating electric current. When current in a circuit is too high to directly apply to measuredly instruments a current transformer produces a reduced current accurately proportional to the current in the circuit, which can be conveniently connected to measuring instruments and recording instruments. Current transformers are commonly used in metering and protective relays in the electrical power industry.

Potential Transformer (PT)

(Potential transformer also called voltage transformer) are a parallel connected type of instrument transformer. These are designed for monitoring single phase and three phase power line voltages in power metering applications. The power terminals can be connected either in line to line or in line to neutral configuration. It allows meters to take readings from electrical service connections with higher voltage then the meter is normally capable of handling without a potential transformer.

Switch Gear

In an electric power system, switch gear is the combination of electrical disconnect switches, fuses or circuit breakers to control protect and isolate electrical equipment. Switch gear is used to de-energize the equipment to allow work to be done and to clear faults downstream. This type of equipment is important because it’s directly linked to the reliability of the electricity supply.

Bus Bars

In electrical power distribution, a bus bar is a strip or bar that conducts electricity with in a switch board, substation, battery bank or other electrical apparatus. Its main purpose is to conduct electricity.

Alternator

- Alternator supply the electric power used by all sectors of modern societies: industrial, commercial, agricultural, and domestic

- Alternator usually operate together (or in parallel), forming a large

power system supplying electrical energy to the loads or consumers. - Alternators are built in large units, their rating ranging from tens to hundreds of

megawatts. - Alternator converts mechanical power to ac electric power. The source of

mechanical power, the prime mover, may be a diesel engine, a steam turbine, a water turbine, or any similar device.

- Smaller synchronous machines are sometimes used for private generation and as standby units, with diesel engines or gas turbines as prime movers.

- The winding consists of copper bars insulated with mica and epoxy resin. - The conductors are secured by steel wedges.- The iron core is supported by a steel housing.

Construction

Conclusion

The whole experience of working at Allied Engineering and Services (Pvt.) Ltd. was great. This organization has a superb work culture, great minds and very high quality of work. The work I could complete here was very satisfactory. I will try to develop myself more and use all my knowledge in the development of any organization in future.

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