Lowongan PT. Pertamina Geothermal Energy April 2012

Pertamina Geothermal Energy (PGE), a subsidiary of PT Pertamina (Persero), established since 2006 has been mandated by the government to develop a working area 15 Commercial Geothermal in Indonesia. Companies that provide energy without pollution, 90% owned by PT Pertamina (Persero) and 10% by PT Pertamina dimilii Venture Fund.

New era begins with the inauguration of geothermal energy Geothermal Field Kamojang on January 29, 1983 and was followed by the operation of Geothermal Power Plant (PLTP) Unit-1 (30MW) on February 7, 1983, and five years later the two units operate at their capacity each of 55 MW. On the island of Sumatra for the first time operate Monoblock 2 MW in the Sibayak-Brastagi as the first Power Plant in August 2001 and the first 20 MW geothermal power plants operating in the area Lahendong.

Over time the Government through the Presidential Decree. 76/2000 revoked the previous decree and enforce the Law. 27/2003 on geothermal, where PT Pertamina no longer have a monopoly in the exploitation of geothermal energy, but sam with other geothermal business in Indonesia.
In implementing these laws Pertamina has returned 16 Commercial Work Area (WKP) Geothermal to the Government of 31 WKP given to manage.
PT Pertamina Geothermal Energy are seeking for talented professionals to join as following positions :
1. Senior Electrial Engineer (ES)
2. Senior Mechanical Engineer (MS)
3. Senior Proces Engineer (PE)
4. Senior Instrument & Control Engineer (ICE)
5. Senior Civil Engineer (CE)
6. Senior Piping Engineer (PIE)
7. Senior QA/QC Engineer (QE)

Special Requirements
* Bachelor degree in electrical engineering for ES
* Bachelor degree in mechanical engineering for MS
* Bachelor degree in chemical or mechanical engineering for PE
* Bachelor degree in physics or electronic engineering for ICE
* Bachelor degree in civil engineering for CE
* Bachelor degree in mechanical engineering for PIE
* Bachelor degree in mechanical for QE
* 20 MW min equivalent power plant (geothermar power plant, CFPP, or CCPP) or refinery processing/petrochemical facilities experience with scope of work : design, O&M, and consultant
General Requirements
* Max age 45 years old
* Min 8 years experiences
* Excellent health condition
* Fluent in English both oral & written
* Computer literate with excellent MS Office ability (including MS Project)
* Willingnes to work in remote area, location : Garut, Tasikmalaya (West Java), & Lahendong (North Sulawesi)

Send your complete resume (application form & CV) to :
PT Pertamina Geothermal Energy
Menara Cakrawala Lt. 8
Jl MH Thamrin 9 Jakarta Pusat 10340

The successful candidates will be contracted on project based
Only shortlisted candidates will be notified
Lowongan Pertamina Geothermal Energy Closing date 29 April 2012

Bursa Lowongan Kerja Chevron April 2012

In Indonesia, Chevron is working in partnership with BPMIGAS (Executive Agency for Upstream Oil and Gas Business Activities) for its exploration & production business and Pertamina for the geothermal and power business and has long been recognized as significant oil and gas producer and geothermal and power provider

Why work with Chevron?
- Global Scope of operations promotes global careers
- Competitive total remuneration program : pay, bonus program and flexible benefits125 years of history yet strong future growth
- State of the art technology
- World class experts
- Large queque of exciting projects
- Reputation for solid busines results
- Strong ethics
- Diversity is a core value
To sustain profitable growth and build the organizational capability, Chevron in Indonesia is now searching for experienced Indonesian nationals who posses relevant educational background, technical, and behavior competencies to join the company in the following opportunities :
Experienced :

Positions – Education – Discipline – Work Location – Expired Date

- OPH Medical Doctor (Ext-170/HR/EXP/CICO/HR/2012) – S1 / D4 – Medical Doctor – Jakarta – 29/04/2012
- LAND OFFICER (Ext-153/LAW/EXP/CPI/LAW/2011) – S1 / D4 – Environmental Engineering, Industrial Engineering, Communication, Forestry, Law, Public Relation, Social and Politic Science – Rumbai – 29/04/2012
- TECHNICIAN (Ext-174/OPS/EXP/CPI/SLO/2012) – D3 – Electrical Engineering (Power), Instrumentation, Mechanical Engineering – Riau – 22/04/2012
- PETROLEUM ENGINEER (Ext-23/PE/EXP/CPI/SLO/2012) – S1 / D4 – Chemical Engineering, Petroleum Engineering – Riau/East Kalimantan – 22/04/2012
- RESERVOIR SIMULATION ENGINEER (Ext-32/PE/EXP/CPI/SLO/2012) – S1 / D4 – Chemical Engineering, Petroleum Engineering – Riau – 22/04/2012
- RESERVOIR ENGINEER (Ext-176/PE/EXP/CPI/SLO/2012) – S1 / D4 – Chemical Engineering, Petroleum Engineering – Riau – 22/04/2012
- WELL SITE MANAGER (Ext-33/DC/EXP/CPI/SLO/2012) – S1 / D4 – All Engineering – Riau – 22/04/2012
- GEOPHYSICIST (Ext-152/ES/EXP/CPI/SLO/2012) – S1 / D4 – Geophysics – Riau – 22/04/2012
- EXPLORATION GEOLOGIST (Ext-153/ES/EXP/CPI/OU/2012) – S1 / D4 – Geology – Riau – 22/04/2012
- DEVELOPMENT GEOLOGIST (Ext-154/ES/EXP/CPI/SLO/2012) – S1 / D4 – Geology – Riau – 22/04/2012
- EARTH SCIENTIST GEOLOGIST (Ext-155/ES/EXP/CPI/HO/2012) – S1 / D4 – Geology – Riau – 22/04/2012
- EARTH SCIENTIST (Ext-128/ES/EXP/CPI/OU/2012) – S1 / D4 – Geology, Geophysics – Riau/East Kalimantan – 22/04/2012
- FACILITY ENGINEER (Ext-139/FE/EXP/CHEVRON-IBU/OU/2012) – S1 / D4 – Chemical Engineering, Civil Engineering, Electrical Engineering (Power), Electronic Engineering, Instrumentation, Mechanical Engineering, Physic Engineering – Riau/East Kalimantan – 22/04/2012
- CONSTRUCTION ENGINEER (Ext-156/FE/EXP/CPI/HO/2012) – S1 / D4 – Civil Engineering, Mechanical Engineering – Riau – 22/04/2012
- FACILITY ENGINEER – CIVIL [AIP] (Ext-157/FE/EXP/CPI/HO/2012) – S1 / D4 – Civil Engineering – Riau – 22/04/2012
- FACILITY ENGINEER – CIVIL [NDD] (Ext-158/FE/EXP/CPI/HO/2012) – S1 / D4 – Civil Engineering – Riau – 22/04/2012
- FACILITY ENGINEER – MECHANICAL (Ext-160/FE/EXP/CPI/HO/2012) – S1 / D4 – Mechanical Engineering – Riau – 22/04/2012
- FACILITY ENGINEER – MECHANICAL (Ext-161/FE/EXP/CPI/HCT/2012) – S1 / D4 – Electrical Engineering (Power), Instrumentation – Riau – 22/04/2012
- FACILITY ENGINEER – MECHANICAL PROJECT (Ext-162/FE/EXP/CPI/HO/2012) – S1 / D4 – Mechanical Engineering – Riau – 22/04/2012
- FACILITY ENGINEER ELECTRICAL (Ext-179/FE/EXP/CPI/HCT/2012) – S1 / D4 – Electrical Engineering (Power), Instrumentation – Riau – 22/04/2012
- FACILITY ENGINEER – RELIABILITY (Ext-186/FE/EXP/CPI/PG&T/2012) – S1 / D4 – Mechanical Engineering – Riau – 22/04/2012
- ELECTRICAL/POWER ENGINEER (Ext-187/FE/EXP/CPI/PG&T/2012) – S1 / D4 – Electrical Engineering (Power) – Riau – 22/04/2012
- FACILITY ENGINEER – ROTATING EQUIPMENT (Ext-188/FE/EXP/CICO/OU/2012) – S1 / D4 – Mechanical Engineering – East Kalimantan – 23/04/2012
- FACILITY ENGINEER PROJECT (Ext-189/FE/EXP/CICO/OU/2012) – S1 / D4 – Mechanical Engineering – East Kalimantan – 23/04/2012
- ENGINEER – FIELD PROCESS (Ext-190/FE/EXP/CICO/OU/2012) – S1 / D4 – Chemical Engineering – East Kalimantan – 23/04/2012
- ENGINEER – FIELD PROJECT (Ext-191/FE/EXP/CICO/OU/2012) – S1 / D4 – Mechanical Engineering – East Kalimantan – 23/04/2012
- CONSTRUCTION REPRESENTATIVE (Ext-172/FE/EXP/CHEVRON-IBU/HO/2011) – D3 – All Engineering – Duri – 22/04/2012
- GOVERNMENT RELATIONS SPECIALIST (Ext-134/PGPA/EXP/CPI/PGPA/2012) – S1 / D4 – Industrial Engineering, Sociology, Public Relation, Psychology, Law, Journalistic, International Relations, Human Resources Management, English Linguistic, Economic and Business Management, Communication, Business Administration, Anthropology, Social and Politic Science – Riau – 22/04/2012
- COMMUNICATIONS TEAM MANAGER (Ext-192/PGPA/EXP/CHEVRON-IBU/PGPA/2012) – S1 / D4 – All Engineering, Social and Politic Science, Sociology, Public Relation, Psychology, Journalistic, International Relations, Human Resources Management, English Linguistic, Communication, Chemistry, Business Administration, Anthropology, Law – Balikpapan – 30/04/2012
- HES SPECIALIST (Ext-132/HES/EXP/CPI/HCT/2012) – S1 / D4 – Chemical Engineering, Industrial Hygiene, Safety & Health Engineering, Petroleum Engineering, Mining Engineering, Mechanical Engineering, Industrial Engineering, Environmental Engineering, Electrical Engineering (Power), Civil Engineering, Safety & Occupational Health – Riau – 22/04/2012
- HES SAFETY SPECIALIST/ENGINEER (Ext-168/HES/EXP/CPI/HES/2012) – S1 / D4 – All Engineering – Riau/East Kalimantan – 22/04/2012
- HR SPECIALIST (Ext-169/HR/EXP/CICO/HR/2012) – S1 / D4 – Industrial Engineering, Business Administration, Human Resources Management, Law, Psychology – Jakarta – 29/04/2012
All applications are appreciated and will be treated confidentially.
Only qualified, short-listed applicants will be invited for further process.
This vacancy is eligible only for Indonesia citizen
If you are interested, please apply to : http://www.chevron.formycareer.com/vacancy/

Mekanisme Steering System Pada Bulldozer

Sahabat teknisi, tipe steering system pada crawler machine sebagian besar adalah mechanical clutch, dimana dalam pengendaliannya menggunakan clutch yang terdiri dari disc dan plate yang tersusun diantara inner drum dan outer drum serta dipasang pada kedua ujung bevel gear shaft.

1. Outer drum
2. Disc
3. Plate
4. Inner drum
5. Bolt
6. Piston
7. Seal piston
8. Spacer
9. Spring small
10. Spring large
11. Pressure plate
12. Bolt
13. Bevel gear shaft hub
14. Bevel gear shaft

Fungsi komponen-komponen utama steering system tipe mechanical clutch, adalah :
• Clutch drum atau inner drum, dibaut pada bevel gear shaft hub yang terikat pada spline bevel
gear shaft, berfungsi sebagai tempat kedudukan plate juga berfungsi sebagai silinder .
• Bevel gear shaft hub, mengalirkan oli dari steering control valve ke piston.
• Brake drum atau outer drum, dibaut pada final drive flange berfungsi sebagai tempat kedudukan
disc.
• Plate, terbuat dari baja tahan karat serta tahan temperatur tinggi. Plate ini berfungsi sebagai
friction plate dan duduk pada spline outer drum.
• Disc, terbuat dari baja, bagian luar diberi lapisan bronze yang berguna untuk mengurangi
keausan. Disc berfungsi sebagai friction plate dan duduk pada spline inner drum.
• Pressure plate, terpasang tetap ke piston oleh bolt. Piston dan pressure plate bergerak secara
bersamaan berfungsi sebagai pendorong disc secara langsung.
• Spring, berfungsi sebagai sumber kekuatan untuk menekan susunan disc dan plate dengan
perantaraan pressure plate.

Proses pemindahan tenaga pada clutch sangat tergantung kepada :
• Gaya tekanan (P) yang diperoleh dari spring atau hidrolik.
• Koefisien gesek (u) tergantung dari jenis material.
• Area (A) tergantung dari luas permukaan yang bergesekan.

Prosedur Start Engine DM45

Untuk menghindari terjadinya kerusakan-kerusakan yg tidak perlu, tentunya kita harus mengetahui beberapa prosedur dalam pengoperasian unit. Berikut ini merupakan beberapa prosedur dalam men-start unit drilling machine

1.   Pastikan semua control dalam kondisi netral atau posisi OFF.

2.   Pastikan Drill/ Propel selector switch dalam posisi DRILL mode.

3.   Pastikan control lever CS dan DCS pada posisi netral.

4.  Pastikan control lever Drill Rotation dan Drill Feed pada posisi netral.

5.  Pastikan emergency stop button switch di tarik ke luar/ posisi ON.

6.   Pastikan engine throttle di setting posisi low idle 1200 rpm.

7. Pastikan tidak ada seseorang dalam kondisi bahaya atau beresiko terkena bahaya sebelum start engine.

8.   Putar kunci kontak posisi ON

9. Tekan dan tahan switch button fuel primer dan dengarkan, primer pump akan berangsur memompa dengan perlahan seiring dengan meningkatnya fuel pressure dan lepas button jika pump sudah terdengar perlahan memompanya.

10. Tarik dan Posisikan compressor on/ off control lever posisi butterfly valve menutup pada compressor.

11. Tekan dan tahan bypass button kemudian tekan switch button engine untuk start engine, lepas start button ketika engine sudah start, dan lepas bypass button ketika engne sudah running.

Rekomendasi Atlas Copco 

 

 

 

 

 

 

 

 

Definisi Dan Pengertian Final Drive (Penggerak Akhir)

Susunan roda gigi penggerak akhir adalah pegurang kecepatan yang biasanya diperlengkapi dengan satu atau dua set roda gigi lurus dan pinion boss roda gigi penggerak akhir.
Prinsip yang dipergunakanpada transmisi dimana kecepatan rotasi dikurangi dan momen puntir ( torque ) ditambah oleh sejumlah roda gigi yang dipergunakan pada penggerak akhir.

Masing-masing bak penggerak akhir ( final drive case ) dipasang melebar keluar dari bak roda gigi tirus ( bevel gear case ) pada masing-masing sisi. Dengan memilih perbandingan kecepatan yang tepat momen puntir ( Torque ) sebelum ke penggerak akhir ( final drive ) dapat diperkecil. Dengan demikian, transmisi yang sama, poros roda tirus ( bevel gear shaft ) dan lain-lain dapat dipergunakan yang sama pada berbagai jenis model mesin.

Roda gigi penggerak akhir ( final Drive gears ) dapat dihadapkan pada tekanan permukaan yang besar disebabkan oleh beban goncangandan benturan ( shock and impact loads ), yang mana memerlukan perhatian ekstra untuk seleksi oli pelumas dan mencegah masuknya benda asing ke dalam bak penggerak akhir ( final drive cases ).

Perbandingan reduksi normal berada diantara 1/9 sampai 1/12 untuk perbandingan reduksi yang lebih kecil dipergunakan sistem reduksi tunggal ( single reduction system ). Untuk perbandingan reduksi yang besar dipergunakan sistem reduksi ganda atau sistem roda gigi planet. ( Double reduction system or planetary gear system ).

Jenis-jenis penggerak akhir :
1. Single reduction final drive shaft ikut berputar ( D31A - 17, D319Q - 17 ).
2. Single reduction fixed final drive shaft ( D20S - 1,2,3 s/n 7 - 478 ).
3. Double reduction ( D50/53A - 17, D75S - 5, D80/85A - 21, D150/155A - 2 ).
4. Planetary gear type rigid ( D355A - 3, D455A - 1 ).
5. Planetary gear type semi rigid (D2675A - 2, D375A - 2, D475A - 2 ).

Operating Specification OHT CAT 789C

Operating Specifications

Nominal Payload Capacity : 195 tons

Body Capacity (SAE 2:1) : 137 yd3

Top Speed – Loaded : 32.7 mph

Steer Angle : 36 Degrees

Maximum Capacity : Custom

Turning Circle Clearance Diameter : 99.2 ft

Turning Diameter – Front : 90.2 ft

 Engine

Engine Model : Cat 3516B EUI

Net Power – SAE J1349 : 1771 hp

Net Power – ISO 9249 : 1791 hp

Net Power – 80/1269/EEC : 1791 hp

Bore : 6.7 in

Stroke : 7.5 in

Displacement : 4211 in3

Gross Power – SAE J1995 : 1900 hp

Weights – Approximate

Chassis Weight : 218300 lb

Body Weight Range : 26 800-29 950 kg (59,000-71,500 lb)

Gross Machine Operating Weight : 700000 lb

Transmission

Forward 1 : 7.2 mph

Forward 2 : 9.8 mph

Forward 3 : 13.2 mph

Forward 4 : 17.8 mph

Forward 5 : 24.2 mph

Forward 6 : 32.7 mph

Reverse : 6.5 mph

Final Drives

Differential Ratio : 2.35:1

Planetary Ratio : 10.83:1

Total Reduction Ratio : 25.46:1

Suspension

Effective Cylinder Stroke – Front : 4 in

Effective Cylinder Stroke – Rear : 3.5 in

Rear Axle Oscillation : ±5.6°

Brakes

Brake Surface – Rear : 18024 in2

Standards : SAE J1473 OCT90 ISO 3450:1996

Brake Surface – Front : 12662 in2

Body Hoists

Pump Flow – High Idle : 193 gal/min

Relief Valve Setting – Raise : 2500 psi

Body Raise Time – High Idle : 18.9 Seconds

Body Lower Time – Float : 17.3 Seconds

Body Power Down – High Idle : 15.6 Seconds

Approximate Weights – Dual Slope

Gross Weight – Empty : 310525 lb

Chassis : 225500 lb

Body : 59625 lb

Full Liner : 20840 lb

Tail Extension : 1700 lb

Side Boards : 2860 lb

Approximate Weights – Flat Floor

Chassis : 225400 lb

Body : 66200 lb

Grid Liner : 3300 lb

Rear Third Liner : 4200 lb

Gross Weight – Empty : 299100 lb

Capacity – Dual Slope – 100% fill factor

Struck : 96 yd3

Heaped (SAE 2:1) : 137 yd3

Capacity – Flat Floor – 100% fill factor

Struck : 102 yd3

Heaped (SAE 2:1) : 158 yd3

Service Refill Capacities

Fuel Tank (standard) : 851 gal

Cooling System : 175 gal

Crankcase : 77 gal

Steering Tank : 34 gal

Steering System (Includes Tank) : 50 gal

Brake/Hoist Hydraulic Tank : 140 gal

Brake/Hoist System (Includes Tank) : 240 gal

Differential and Final Drives : 154 gal

Torque Converter/Transmission Sump : 59 gal

Torque Converter/Transmission System (Includes Sump) : 20 gal

Approximate Weights – MSD II

Approximate Weights – X

Capacity – MSD II – 100% fill factor

Tires

Standard Tires : 37.00-R57 (E4)

Steering

Steering Standards : SAE J1511 OCT90 ISO 5010:1992

Optional Engine

Body – Dual Slope

AC Drive System

Body – X

Braking System

Dimensions

Weight Distributions – Approximate

Front Axle – Loaded : 33 %

Rear Axle – Loaded : 67 %

Front Axle – Empty : 47 %

Rear Axle – Empty : 53 %

ROPS

Fitur - Fitur Terbaru Pada Excavator Komatsu PC4000-6

 Komatsu Technology and Expertise
• Quality management ISO 9001 certified
• Environmental Management ISO 14001 certified
• High, consistent quality through continuous investment in personnel, design and manufacturing systems and processes

Advanced Hydraulics
Extended reliability and control
• Electronic pump management
• Comprehensive monitored filtration
• Simple open-circuit hydraulic system with high efficiency swing-out oil coolers

Reliability and Durability
Designed for lower operating costs
• Robust structural design developed from field experience and finite element analysis
• Extended life undercarriage wear parts
• Large diameter rollers, idlers and sprockets
• Large surface contact area with extensive precision hardening reduces wear
• Hardened track link pin bores 

Productivity
Designed for more tons per hour
• Powerful digging forces
• Easy bucket filling
• Proven attachment design
• All cylinders mounted under the shovel attachment for additional protection
• Buckets and Wear Packages to suit all material densities and ground conditions

Large Comfortable Cab
Provides full shift comfort
• Komatsu low noise cab on multiple viscous mounts for reduced noise and vibration
• Large volume cab with full view front window (floor to ceiling) increases operator view
• Comprehensive climate control with pressurized, filtered air ventilation and air conditioning
• High specification multi-adjustable air suspension seat, redesigned for mining
• Well elevated operator position provides superior all around view

Powerful Diesel Engine
Komatsu SDA16V160 engine
• Rated 1400 kW 1875 HP, at 1800 rpm
• Electronic engine management
• Low engine emission levels – meets EPA Tier 2 emission regulations
• Time saving oil management system as standard equipment; Centinel Engine Oil Management, Engine Reserve Oil Supply and Eliminator Oil Filter systems

Easy Maintenance
Simple, common-sense design gives quick, easy access to all major components
• Hydraulically operated ground access ladder
• Generous access to all major service points from machinery house floor level
• Enclosed, internally lit machinery house with wall separating engine from pump area
• Automatic central lubrication
• Vehicle Health Monitoring System (VHMS) provides real-time information about the operating systems of the machine
• Ground-level access to hydraulically operated dropdown service center with Wiggins connections