Engineer's Research

20/07/2024

Jenis APAR Berdasarkan Kelas Kebakaran yang Diproteksi

Alat pemadam kebakaran terdiri dari beberapa jenis berdasarkan kelas kebakaran yang diproteksi. Ada 5 kelas kebakaran yaitu kebakaran kelas A, B, C, D dan K. Ke 5 jenis kebakaran tersebut dibedakan berdasarkan penyebab atau bahan yang terbakar.
Jenis APAR kelas A B C D K dan fungsinya adalah sebagai berikut.

1. APAR Kelas A
Kebakaran kelas A adalah jenis kebakaran yang terjadi pada bahan padat mudah terbakar. Material mudah terbakar yang bisa menyebabkan kebakaran kelas A diantaranya adalah kayu, kertas, plastik, karet, kain, dll. Jenis alat pemadam api yang bisa mengatasi kebakaran kelas A adalah APAR dry chemical powder dan foam.

2. APAR Kelas B
Kebakaran yang diklasifikasikan ke dalam kelas B disebabkan oleh benda cair atau gas mudah terbakar. Penyebab kebakaran ini diantaranya adalah bensin, minyak, alkohol, thinner, gas LPG, cat, dll. APAR yang dapat digunakan untuk memadamkan api kelas B adalah APAR powder, foam, dan liquid gas.

3. APAR Kelas C
Kebakaran kelas C adalah jenis kebakaran yang terjadi akibat masalah listrik, seperti hubungan pendek arus listrik atau korsleting listrik. Jenis kebakaran ini tidak bisa ditangani dengan media air karena bisa menghantarkan arus listrik. Alat pemadam kebakaran yang tepat untuk mengatasi kebakaran kelas C adalah powder, CO2, dan liquid gas.

4. APAR Kelas D
Kebakaran kelas D terjadi akibat terbakarnya bahan logam mudah terbakar, seperti natrium, litium, dan magnesium. Jenis kebakaran yang melibatkan benda logam mudah terbakar harus ditangani secara khusus menggunakan media pemadam api yang sesuai dengan karakteristik logam yang terbakar.

4. APAR Kelas K
Kebakaran kelas K (Kitchen) adalah jenis kebakaran yang biasa terjadi diarea dapur yang berawal dari bahan cair yang tedapat didapur seperti minyak sayur, minya zaitun, mentega, margarine dan lemak hasil olah masakan yang mudah terbakar. Pada dasarnya kebakaran kelas K (Kitchen) adalah turunan dari jenis kebakaran kelas B yang merupakan kebakaran yang disebabkan oleh bahan cair atau gas yang mudah terbakar seperti solar, bensin, premium, gas LPG, gas alam, oli, minyak sayur dan lain-lain.
Namun mengingat bahan cair mudah terbakar yang terdapat didapur memiliki karakteristik khusus dan memiliki temperatur yang lebih panas, maka diperlukan media pemadam api yang khusus p**a yang mampu mengatasi kebakaran kelas K ini.

Jenis alat pemadam kebakaran harus digunakan sesuai dengan jenis kebakaran yang terjadi. Oleh karena itu, gunakan alat pemadam api yang tepat agar api bisa dipadamkan dengan cepat.

Salam Safety

15/07/2024

26/10/2020

Value engineering is the systematic application of different approaches to increase efficiency and minimize operating costs.

25/10/2020

24/10/2020

PT. Inti Brunel Teknindo, 10 Positions

Posting date: October 22, 2020
Expiry date: November 05, 2020

PT. Inti Brunel Teknindo provides specialist personnel to the international oil & gas, petrochemical, power generation and construction industries. Our clients are predominantly major operating companies and international engineering or construction companies.

We have a global network with local market knowledge in 97 locations around the world.

We have Great Opportunity for you to Explore. Will you be keen?

1. Position Title: Planning Engineer

Balikpapan 18 months

- Bachelor of Engineering degree or a Construction Management Degree

- 10 (ten) years applicable experience in the control of major oil and gas production facilities projects.

- Expertise as Senior Planner, Scheduler, or Project Controller

- Expertise in 3 (three) Integrated Schedule until integration, installation, and commissioning

- Has a working knowledge of applicable industry practices

- Has been principal engineer responsible for the control of similar projects

- Has experienced in the use of computer programs applicable to the control of Resources and Activity duration on construction projects

- Able to determine 3 (three) critical path for each plant and overall project (first, second and third critical path) and always be controlled and discuss to owner if any bias indications.

- Has an experience to analyze potential progress behind due to material delay, lack of manpower or low performance and predict impact to end of project schedule and propose suggestion to avoid project schedule delay.

- Has ability to prepare and monitor a CPM schedule for the project to identify the resources and time required completing the project.

- Has excellent capability to perform sensitivity analysis on the CPM schedule to determine potential areas of slippage and corrective action to be taken.

2. Position Title: Field Piping Engineer (ISBL & OSBL)

Balikpapan 24 months

- Bachelor Degree in Mechanical Engineering

- 7+ years’ experience oil and gas and petrochemical project (i.e. refinery project, petrochemical, and gas processing/ LNG).

- Has Experience in the field supervisory of pipelines installation including pipeline routing, sizing, isometric, materials selection, corrosion protection and tie-in procedures.

- Has an excellent knowledge of current internationally recognized Codes and Standards such as: API, ANSI, ASME, AWE, NACE, ASTM

- Has a proven ability to perform Piping installation and testing with a high level of quality in gas processing plants and utility facilities

- Has experience in HSSE (Health, Safety, Security and Environment) Management System.

- Working knowledge in the use of computer programs.

- Had maintained effective relationship with COMPANY and CONTRACTOR and good coordination work to completed piping installation activities in accordance with schedule requirements.

- Has ability in quality management and schedule and man-hour control of the Piping installation work

- Fluent in Communication and writing in English

3. Job Title: Lifting Scaffolding Supervisor

Cilegon; 6 months

- Bachelor Degree in Mechanical Engineering

- Expertise in Lifting/Rigging & Transportation Plan, Scaffolding Plan and Lifting Gears/Special Tools

- Expertise in Stress Analysis (FEA) & Mechanical/Structural Calculation.

- Expertise in Installation Procedure, Method Statement, Risk Assessment.

- Expertise in Estimation Bill of Quantity and Bill of Materials / MTO.

- Expertise in ANSI/ASME, ASTM, BS, JIS, TG:20, LOLER, etc.

4. Position Title: Field Electrical Engineer

Balikpapan, 12 months

- Bachelor of Science degree in Electrical Engineering

- Has 55 (fifty-five) years old

- 10+ (ten) years’ experience oil and gas and petrochemical project (i.e. refinery project, petrochemical, and gas processing/ LNG).

- Has professional certificate of competency in electrical power system

- Has a wide range of experience in the Electrical engineering with specific in design and planning for Electrical Power Generating System, Power System Analysis (ETAP Software Program) System, Power

- Has experience to developed Electrical design basis, conceptual design of underground facilities and standard drawings and controlled all the Electrical design activities through the project ex*****on.

- Has Experience in Electrical Distribution System including an integrated electrical power management system.

- Has Experience as Lead Electrical Engineer

- Has an excellent knowledge of current internationally recognized Codes and Standards such as:

o International Electrotechnical Commission ( IEC)

o American National standards Institute (ANSI),

o American Petroleum Institute (API),

o National Electrical Manufacturers Association (NEMA),

o National Fire Protection association (NFPA)

o National Electric Code (NEC, NFPA 70),

o Institute of Electrical and Electronic Engineers (IEEE)

- It has been the principal engineer responsible for the design, analysis and review for Electrical systems. in gas processing plants and utility facilities

- Has a proven ability to perform Electrical engineering include study, calculation in Electrical System with a high level of quality.

- Working knowledge in the use of computer programs (latest electrical engineering software i.e ETAP) applicable to such designs

- Had maintained effective relationship with COMPANY and CONTRACTOR and good coordination work to completed engineering activities in accordance with schedule requirements.

- Has a good medical record

- Fluent in Communication and writing in English

5. Position Title: Instrument Control Field Engineer

Balikpapan; 24 months

- Bachelor of Science degree in Instrument/Control Engineering

- Max. 55 (fifty five) years old.

- 5+ (five) years’ experience oil and gas and petrochemical project (i.e. refinery project, petrochemical, and gas processing/ LNG). 5. Has a wide range of experience in the Instrument/Control installation & testing include Distributed Control System (DCS), Programmable Logic Control (PLC) and Emergency Shutdown System (ESD)

- Has Experience as field supervisor in Major Instrumen/Control system installation and testing

- Has an excellent knowledge of current internationally recognized Codes and Standards such as,

• American Petroleum Institute (API),

• American National Standards Institute (ANSI),

• Instrument Society of American (ISA),

• International Electrotechnical Commission (IEC)

• National Electrical Manufacturers Association (NEMA),

• National Fire Protection association (NFPA)

• National Electric Code (NEC, NFPA 70),

• Insulated Cable Engineers ‘association (ICEA).

- Has a proven ability to perform Instrument/Control system installation with a high level of quality.

- Has experience in HSSE (Health, Safety, Security and Environment) Management System.

- Working knowledge in the use of computer programs .

- Had maintained effective relationship with COMPANY and CONTRACTOR and good coordination work to completed Instrument/Control system installation and testing activities in accordance with schedule requirements.

- Has a good medical record

- Fluent in Communication and writing in English

6. Position Title: Admin Assistant

Timika, 12 months

- Male

- Bachelor Degree

- Fluent in English (speaking and written)

- Expertise in administration

- Willing to work in remote area



7. Position Title: Field Surveyor (QS)

5 personnel

Balikpapan 24 months

Job description:

1. Verify Bill of Quantities including Quantity take‐off refer to Construction Drawing

2. Join Survey with Contractors to verify progress claims submitted by Contractors.

3. Liaise with Contractor’s QS on progress payments and variation orders.

4. Measurement, Taking-Off of Quantities, familiar with Bill of Quantities, etc.

5. Identify additional and subtraction of quantities

6. Assist Project Reporting Coordinator in monitoring physical progress

7. Attend Site Meetings and take charge of all clients' request / feedbacks

Requirements:

- Expertise in Oil & Gas, Refinery, or Petrochemical Project.

- Candidate must possess at least a Bachelor's Degree in Civil, Mechanical, Control Systems, or Electrical Engineering

- 2 - 5 years experiences in Construction Stage

- Responsible, self-motivated and enthusiastic

- Good interpersonal and teamwork skills

- Good communication and written skills in English

- Able to read Construction Drawing

- Knowledge in MS Office Applications (Word, Excel & PowerPoint)

- Preferable from Balikpapan Area and nearby

- Willing to work in Balikpapan

8. Position Title: Field Engineer - Tanks/Stationary Equipment

Balikpapan/Lawe-Lawe, 24 months

- Local Indonesia

- Willing to work in Balikpapan no rotation

- Bachelor of Mechanical Engineering

- 7+ years of experience in oil and gas and petrochemical project.

- Experienced as Mechanical field supervisor especially for Major Mechanical Equipment such as steam Boiler, sphere tank, process vessels and others Mechanical equipment for Process and Utilities plant.

- Expertise in API, ANSI, ASME, AWS, TEMA, NACE, ASTM

- Able to to perform fields supervisory for Mechanical equipment installation and testing with a high level of quality.

- Expertise in HSSE (Health, Safety, Security and Environment) Management System.

- Expertise in the use of computer programs.

- Good interface with COMPANY and Contractor and good coordination work to completed construction in mechanical activities in accordance with schedule requirements.

9. Position Title: Field ICSS Engineer

Balikpapan

- At least a Bachelor of Science degree in Instrument/Control Engineering

- 7 (seven) years’ experience oil and gas and petrochemical project (i.e. refinery project, petrochemical, and gas processing/ LNG).

- Has a wide range of experience in the Instrument/Control engineering with specific in design and planning for Instrument/Control especially for RFCC, hydrotreating, reforming, and hydrocracking plant include Integrated Control and Safety System (ICSS) and Emergency Shutdown System (ESD)

- Has experience to develop Instrument/Control design basis, conceptual design of Instrument/Control and standard drawings and controlled all the Instrument/Control design activities through the project ex*****on.

- Has Experience in Major Instrument/Control system design.

- Has Experience as Lead Instrument/Control Engineer

- Has an excellent knowledge of current internationally recognized Codes and Standards such as API, ANSI, ISA, IEC, NEMA, NFPA, NEC, NFPA 70, IEEE, and ICEA.

- It has been the principal engineer responsible for the design, analysis and review for Instrument/Control systems. in gas processing plants and utility facilities

- Has a proven ability to perform Instrument/Control engineering include study, calculation in Instrument/Control System with a high level of quality.

- Working knowledge in the use of computer programs (latest instrument/control engineering software) applicable to such designs

- Had maintained effective relationship with COMPANY and CONTRACTOR and good coordination work to completed engineering activities in accordance with schedule requirements.

- Has a good medical record

- Fluent in Communication and writing in English

10. Position Title: Field Start-Up Engineer

Balikpapan, 24 months

- At least a Bachelor of Science degree in Mechanical Engineering

- Has maximum age of 55 (fifty-five) years old.

- 5+ (five) years’ experience oil and gas and petrochemical project (i.e. refinery project, petrochemical, and gas processing/ LNG).

- Has experience as Mechanical field supervisor especially for Major Mechanical Equipment such as steam Boiler, sphere tank, process vessels and others Mechanical equipment for Process and Utilities plant

- Has an excellent knowledge of current internationally recognized Codes and Standards such as,

American Petroleum Institute (API), American National Standards Institute (ANSI), American Society of Mechanical Engineers (ASME), American Welding Society (AWS), Tubular Exchanger Manufacturers' Association (TEMA), National Association of Corrosion Engineers (NACE), American Society of Testing and Materials (ASTM).

- Has a proven ability to perform fields supervisory for Mechanical equipment installation and testing with a high level of quality.

- Has experience in HSSE (Health, Safety, Security and Environment) Management System.

- Working knowledge in the use of computer programs.

- Had maintained effective relationship with COMPANY and Contractor and good coordination work to completed construction in mechanical activities in accordance with schedule requirements.

- Has a good medical record

- Fluent in Communication and writing in English



Kindly send us your latest updated CV, references & related certificates to email: [email protected]

Put the “Position Title” as subject email.
Sumber Petromindo

24/10/2020

PT. Saipem Indonesia; 3 Positions

Posting date: October 19, 2020
Expiry date: November 02, 2020

Saipem is a leading company in engineering, drilling and construction of major projects in the energy and infrastructure sectors. It is “One-Company” organized in five business divisions (Offshore E&C, Onshore E&C, Offshore Drilling, Onshore Drilling and XSight, dedicated to conceptual design).

Saipem is a global solution provider with distinctive skills and competences and high-tech assets, which it uses to identify solutions aimed at satisfying customer requirements. Listed on the Milan Stock Exchange, it is present in over 60 countries worldwide and has 32 thousand employees of 120 different nationalities.

We are seeking for best candidates to fill the vacant position:

1. POSITION : Mechanical (Package) Engineers (2 Position)

Department/Project : Offshore Engineering (Mechanical)

Education : University Graduate on Technical Major

Seniority : Expert Engineer

Working Experiences : More than 5 years in similar position or similar field

Working Status : Temporary / Contract (6 months)

Work location : Jakarta

REQUIRED WORKING SKILLS/QUALIFICATION/SERTIFICATION

1. At least 5 years working experience in mechanical engineering work (EPCI projects). Graduates from reputable universities.

2. The application of a good level of theoretical knowledge in designs & selection studies, of the Package system equipment especially Flare Package, Chemical Injection Package, Pedestal Crane. Experience in Diesel Generator and several Pump type such as Centrifugal, Rotary Gear, Rotary Vane, Reciprocating and Sealless type is a plus point.

3. Having knowledge of International code standard for Package Equipment for onshore and offshore design such as API 537, API RP 2C , API 675, API 676, API 610, API 674, API 685, etc.

4. All around experience in work scoping, vendor management, FAT, Field Engineering, and preferably commissioning & troubleshooting experience.

5. Good communication skill, approachable, and able to work with others. Experience in interfacing with field operations and maintenance team is a plus point

6. Preferably has previously interfaced with local and foreign equipment packager and work on brownfield area.

7. Demonstrated ability and sensitivity to work with people from variety of cultural backgrounds.

8. Computer literacy involving the regular use of professional office applications and some technical applications

BRIEF JOB DESCRIPTIONS

Develop Engineering works and activities especially for Package equipment and Rotating equipment, ensuring the compliance with Specification, QA/QC and HSE requirement. The task including;

1) Support Lead to reviews Contractual technical documentation and requirements.

2) Support Lead to defines engineering requirements and interface with other disciplines and optimizes systems ensuring minimal cost and simplification in compliance with the required performance.

3) Prepares the technical documentation for package requisitions (specification, data sheets etc., where requested).

4) Technical negotiation with vendors and controls of vendor documents.

5) Prepares technical evaluation and technical tabulation for vendor technical alignment.

6) Follow-up of assigned equipment/package after order award.

7) Checks and signs all vendor, drawings in coordination with other disciplines

8) Attends to internal review activities and participates to inter-discipline check meetings (where required)

9) Provide support for expediting and testing activities.

10) Provide support for document management and prepare final documentation book.

11) Prepare material take-off to support construction activity.

12) Assist construction activity providing information and clarification through vendor(s).

2. POSITION : Mechanical (HVAC) Engineers (1 Position)

Department/Project : Offshore Engineering (Mechanical)

Education : University Graduate on Technical Major

Seniority : Expert Engineer

Working Experiences : More than 5 years in similar position or similar field

Working Status : Temporary / Contract (6 months)

Work location : Jakarta

REQUIRED WORKING SKILLS/QUALIFICATION/SERTIFICATION

1. At least 5 years working experience in HVAC engineering work (EPCI offshore projects). Graduates from reputable universities.

2. The application of a good level of theoretical knowledge in designs & selection studies, of the HVAC system equipment especially ACCU, AHU, PAC, Chiller. Experience in Package equipment such as Breathing Air System, Chemical Injection Package is a plus point.

3. Having knowledge of International code standard for HVAC for onshore and offshore design.

4. Familiar with HVAC software, especially HAP.

5. All around experience in work scoping, HVAC & Package vendor management, FAT, Field Engineering, and preferably commissioning & troubleshooting experience.

6. Good communication skill, approachable, and able to work with others. Experience in interfacing with field operations and maintenance team is a plus point

7. Preferably has previously interfaced with local and foreign HVAC equipment packager and work on brownfield area.

8. Demonstrated ability and sensitivity to work with people from variety of cultural backgrounds.

9. Computer literacy involving the regular use of professional office applications and some technical applications

BRIEF JOB DESCRIPTIONS

Develop Engineering works and activities especially for HVAC and Package equipment, ensuring the compliance with Specification, QA/QC and HSE requirement. The task including;

1. Support Lead to reviews Contractual technical documentation and requirements.

2. Support Lead to defines engineering requirements and interface with other disciplines and optimizes systems ensuring minimal cost and simplification in compliance with the required performance.

3. Prepares HVAC design basis, selection study and cooling load calculation.

4. Prepares the technical documentation for HVAC/Package requisitions (specification, data sheets, drawing, etc., where requested).

5. Technical negotiation with vendors and controls of vendor documents.

6. Prepares technical evaluation and technical tabulation for vendor technical alignment.

7. Follow-up of assigned HVAC/Package equipment after order award.

8. Checks and signs all vendor, drawings in coordination with other disciplines

9. Attends to internal review activities and participates to inter-discipline check meetings (where required)

10. Define detail engineering activities (layouts, routings, supports, etc.).

11. Provide support for expediting and testing activities.

12. Provide support for document management and prepare final documentation book.

13. Prepare material take-off to support construction activity.

14. Assist construction activity providing information and clarification through vendor(s)

3.POSITION : Mechanical (Rotating) Engineers (2 Position)

Department/Project : Offshore Engineering (Mechanical)/Tangguh Onshore

Education : University Graduate on Technical Major

Seniority : Expert Engineer

Working Experiences : More than 5 years in similar position or similar field

Working Status : Temporary / Contract (3 months-possibility to extend)

Work location : Jakarta

REQUIRED WORKING SKILLS/QUALIFICATION/SERTIFICATION

1. At least 3 years working experience in machinery engineering work. Graduates from reputable universities.

2. Familiar with Design of the Machinery equipment Rotating equipment & Package equipment

3. Familiar with WinPCS for network and object - structured database management system for maintaining the engineering data and certification

4. Good communication skill, approachable, and able to work with others. Experience in interfacing with field operations and maintenance team is a plus point

BRIEF JOB DESCRIPTIONS

Assignment for full time Office & Site-based as Mechanical equipment engineer to following up activity;

- Engineering check sheet activity

- Data Management & Control

- Coordination & Reporting



Please send your qualified CV and related Certificate to: [email protected]

“Saipem and its subsidiaries recruit their through specific procedures, selecting and , adopting criteria of merit, ability and professionalism in all decisions and will never request payment of any kind. If you want to search in Saipem. Please refer to the “careers” area of the Saipem website of the official Saipem LinkedIn page and be careful about any other kind of unofficial requests.”

Info by

13/10/2020

Mining Engineer adalah disiplin teknik yang menerapkan ilmu pengetahuan dan teknologi untuk mengekstraksi mineral dari bumi.

Teknik pertambangan dikaitkan dengan banyak disiplin ilmu lainnya, seperti geologi, pengolahan mineral dan metalurgi, serta rekayasa geoteknik dan survei.

Mining Engineer adalah disiplin teknik yang menerapkan ilmu pengetahuan dan teknologi untuk mengekstraksi mineral dari bumi.

09/10/2020

Sejarah Singkat Tentang Engineer
Engineering merupakan salah satu profesi tertua di dunia. Sekitar 2550 SM, Imhotep, insinyur terdokumentasi pertama kali, membangun sebuah piramida stepped yang terkenal dari Raja Zoser terletak di Saqqarah

Teknik Militer (Military Engineering)

SELENGKAPNYA Di www.engineerku.com/sejarah-singkat-tentang-engineer

Engineering merupakan salah satu profesi tertua di dunia. Sekitar 2550 SM, Imhotep, insinyur terdokumentasi pertama kali, membangun sebuah piramida stepped yang terkenal dari Raja Zoser terletak di Saqqarah

19/06/2015

Pertamina Rancang Peta Jalan Pembangunan Jargas di 25 Kota

Pertamina Gas sudah membuat peta jalan pembangunan jaringan p**a gas (jargas) di 25 kota di seluruh Indonesia pada 2015 hingga 2020. Pembangunan jaringan p**a gas kota ini diharapkan menjadi solusi ketahanan energi nasional.

Direktur Utama Pertamina Gas, Hendra Jaya, mengatakan pembangunan jaringan p**a gas ini akan menggunakan Anggaran Pendapatan dan Belanja Negara (APBN). Dia tidak menyebut berapa nominal investasi yang dibutuhkan.

"Tahun depan Pertamina Gas akan bangun jaringan gas di 25 kota, tapi kotanya belum ditentukan, kami sedang siapkan. Anggaran dari APBN, dan ini jadi tantangan karena harganya nanti diregulasi," kata Hendra, saat berbuka puasa bersama wartawan, di Jakarta, seperti dilaporkan viva.co.id, Jumat (19/6).

Meski peta jalan pembangunan p**a gas di 25 kota ditetapkan hingga 2020, Hendra mengatakan pembangunan akan dipercepat. Dia optimistis pembangunan akan selesai pada 2016.

07/06/2015

LIPI Minta Pemerintah Transparan Soal Harga Premium

Peneliti Pusat Penelitian Ekonomi Lembaga Ilmu Pengetahuan Indonesia (LIPI) Maxensius Tri Sambodo mengatakan, Pemerintah diminta untuk lebih transparan dan terbuka dalam penetapan harga bahan bakar minyak (BBM) jenis premium yang mekanisme berubah setiap kurun waktu tertentu.

"Penetapan harganya memang terlalu banyak parameter dan itu belum dibuka terang benderang ke masyarakat. Maxensius. Jakarta, seperti dikutip publicapos.com, baru-baru ini.

Parameter yang digunakan pemerintah dalam penetapan harga BBM jenis premium, diakui Maxensius memang terlampau rumit. Namun, dengan mulai terbuka dan transparan dalam penetapan harga itu, pemerintah akan mulai melakukan edukasi energi ke masyarakat.

06/02/2015

Loop Pengendalian
Secara umum bentuk loop sistem pengendalian dibagi dua macam, yaitu :

Sistem pengendalian loop terbuka (open loop control system).
Sistem pengendalian loop tertutup (close loop control system).


1. Pengendalian loop terbuka (open loop control system)

Sistem pengendalian loop terbuka (open loop control system) adalah sistem pengendalian yang keluarannya tidak akan dapat mempengaruhi aksi dari pengendaliannya. Jadi pada sistem pengendalian loop terbuka keluarannya tidak diukur atau diumpanbalikkan untuk dibandingkan dengan masukannya.

Sebagai contoh adalah proses pencucian dengan mesin cuci, biasanya perendaman, pencucian dan pembilasan pada mesin cuci dioperasikan berdasarkan waktu dan mesin cuci tidak mengukur keluaran, misalnya sinyal berupa kebersihan dari pakaian setelah dicuci. Jadi pada sistem ini keluaran tidak dibandingkan dengan masukan acuan, sehingga untuk setiap masukan acuan terdapat kondisi operasi yang tetap. Apabila pada sistem loop terbuka mendapat gangguan (disturbance), maka sistem ini tidak dapat bekerja seperti yang diinginkan (mengoreksi gangguan tersebut).

Sistem ini sangat cocok untuk suatu sistem dengan masukan yang telah diketahui dan tidak ada gangguan baik eksternal maupun internal, dan untuk mendapatkan hasil yang diinginkan maka pada sistem pengendalian loop terbuka harus menggunakan komponen-komponen yang teliti dan terkalibrasi.

http://ogonesia.com/loop-pengendalian/

21/01/2015

Controller dan Control Theory

Pengontrolan dapat diartikan sebagai pengaturan atau pengendalian. Pengontrolan dalam proses produksi didefinisikan sebagai upaya pengaturan untuk mempertahankan nilai atau output yang diinginkan tetap terjaga dari pengaruh perubahan atau deviasi yang ditimbulkan oleh proses itu sendiri.

Integrasi komponen kontrol dan algoritma berfungsi untuk mendapatkan system control yang handal. Dalam melakukan tuning controller ada beberapa metode yang secara umum dapat dibagi dua, yaitu: open loop dan closed loop tuning. Pada cascade control, bagian sekunder di tuning terlebih dahulu diikuti bagian primer.

Pengaturan yang presisi dari level, pressure, temperature, dan flow adalah unsur penting dalam aplikasi proses. Perubahan kecil pada control akan membawa dampak yang besar pada hasil akhir. Teknologi proses kontrol adalah sarana penting bagi industri untuk beroperasi dalam limit yang ditentukan, untuk memperoleh kualitas, safety, dan keuntungan yang maksimal.

Sistem pengendalian proses adalah merupakan bagian yang sangat penting dalam kegiatan suatu proses khususnya industri migas.

Dengan adanya sistem pengendalian kita dapat mengetahui kondisi varibel proses yang sedang berjalan, sehingga apabila terjadi gangguan terhadap proses tersebut operator akan dapat segera mengetahui dan mengambil tindakan perbaikan terhadap gangguan tersebut, sehingga proses akan berjalan dengan aman sesuai dengan yang diinginkan.

sistem pengendalian proses pembahasannya mencakup :

1. Sistem pengendalian proses.
2. Control loop
3. Controller
4. Metode tuning

Selengkapnya di http://ogonesia.com/controller-dan-control-theory/