Conceptual Engineering & Design Services
Feasibility Studies
PT. Depriwangga Engineering undertakes feasibility studies to establish the feasibility of projects with meet the technical scope, operational flexibility and economic viability. At PT. Depriwangga Engineering, we recognize the importance of such studies and possess the required multi-discipline domain expertise to undertake such activities for root projects as well as the revamping of existing plants.
Basic Engineering
The Basic Engineering services offered by PT. Depriwangga Engineering consist of core documentation of projects, including process flow diagrams, heat & mass balances, P&ID, control & operational philosophy, basic equipment sizing, equipment specifications and conceptual equipment layout, etc. PT. Depriwangga Engineering is well equipped with a large range of the latest industry standard design automation software tools for engineering calculations, simulation, modeling and computer aided designing.
Front-End Engineering & Design (FEED)

PT. Depriwangga Engineering provides solutions to diverse industries, including oil and gas, power, and mining to manage their internal business drivers, using the expertise gained from providing front-end engineering and design (FEED) services. PT. Depriwangga Engineering has provided FEED services for several projects, and design packages. Fluor has extensive experience preparing lump sum bid packages and has many reference packages to facilitate completion of work in an expeditious timeframe.

Front-end engineering and design is defined as the work required to produce process and engineering documentation of sufficient quality and depth to adequately define the project requirements for detailed engineering, procurement and construction of facilities and to support a ±10 percent project cost estimate. This distinct project phase is typically used to:

  • Develop the engineering design packages that can be used to bid a lump sum EPC scope and / or provide documents for the detailed engineering phase.
  • Prepare cost estimates for scope definition and for EPC project
  • Provide hazard operation and hazard identification studies
Detailed Engineering Design

The detailed design phase results in all documentation required to procure equipment and materials, to (sub)-contract the construction work and to operate and maintain the facilities. The detailed design package may include final PFD’s and P&ID’s.

PT. Depriwangga Engineering employs domain knowledge experts, cutting edge software tools and specially developed applications for delivering intricate engineering services. Based on the basic design, we provide these detailed engineering services by delivering intelligent engineering designs and the associated documentation.

PT. Depriwangga Engineering provides the following Detailed Engineering Services:

1.Process Engineering

PT. Depriwangga Engineering’s process engineering group undertakes the complete detailed engineering of process plants based on FEED package. The various services covered include:• Process simulation• Heat and material balance calculations• Materials of construction diagrams• Hydraulic analysis, line sizing and relief valve sizing• Design of process equipment• Development of Process Flow Diagrams (PFDs) and equipment data sheets :

A. Development of Process and Instrumentation Diagrams (P&IDs)
B. Safety and Hazards and Operability (HAZOP)Specialized Tools
Used: Aspen Plus,HTRI, PHA Works, Pipesim, Flarenet, and a number of internally developed equipment design programs.

2. Instrumentation & Controls Engineering

PT. Depriwangga Engineering’s Instrumentation & Control systems engineering group executes detailed engineering activities for all types of instrumentation at Oil & Gas Industries, but not limited in Mining Industries.The major elements of this service include instrument markups on P&IDs, preparation of specification datasheets, development of Field Instrument/JB/Panel location plans, wiring and loop diagrams, hook-up drawings, PLC/DCS I/O assignment, DCS configuration etc. and the creation/import of instrument indexes, flow sensors, control valves and thermo well sizing calculations. The various services covered include:• Complete Control System design and architecture• Distributed Control System (DCS), Programmable Logic Controller (PLC) and Supervisory Control and Data Acquisition (SCADA) design and specification• Control valve sizing and selection• Instrument design and specification• Procurement services for all types of I & C equipmentSpecialized Tools Used:AutoCAD, and Instrucals.

3. Electrical Engineering

PT. Depriwangga Engineering’s electrical engineering carries out power systems studies using ETAP software. The team also undertakes 3D modeling of trays, lighting fixtures and other electrical equipment. The various services covered include:• Electrical load analysis and design of system architecture• Power distribution system design• Motor control center and sub-station design• Protective relay coordination• Lighting design

Grounding design
• 3D design of electrical components
• Cable and tray routing, sizing, scheduling
• Hazardous area classification
• Supervisory Control and Data Acquisition (SCADA) design and    specification
• Plant communication system design
• Procurement services off all types of electrical equipment
Specialized Tools Used :
AutoCAD, ETAP, & other platforms for 3D modeling.

4. Mechanical Engineering

PT. Depriwangga Engineering’s mechanical engineering group designs various static and dynamic equipment using internationally accepted design codes and software. The various services covered include:

  • Design of static and rotating equipment such as pumps, vessels, tanks and heat exchangers, reactors, columns and agitators
  • Heat exchanger setting plans
  • Finite element analysis
  • Design of material handling equipment such as conveyors, crushers, elevators, and cranes
  • Preparation of technical specifications for procurement of equipment
  • Generation of fabrication drawings
  • Technical bid evaluationSpecialized Tools Used:AutoCAD, PVElite, PDMS, Coade Tank and a number of internally developed equipment design programs.

5. Plant Design & Piping Engineering

PT. Depriwangga Engineering’s piping engineering group carries out an entire range of activities, stress analysis, conceptual planning and studies, 3D modeling, Isometrics, pipe supports, interference checks, as well as the creation of design reviews and reports. The various services covered include:

  • Complete plant layout services, including equipment arrangement, plot plan development and conceptual layout
  • 2D and 3D equipment and piping modeling
  • Static and dynamic piping stress analysis
  • Laser scanning and “as-building” services
  • Complete piping material management services, including pipe specification and reference database (RDB) development and maintenance
  • Procurement of piping materials and specialty items
  • Site construction support servicesSpecialized Tools Used:AutoCAD, CAESAR II, PMDS, and a number of internally developed equipment design programs.

6. Civil Structural Engineering

PT. Depriwangga Engineering’s civil/structural engineering group undertakes the complete detailed engineering of all structures and foundations pertaining to any plant, non-plant, utility, offsite and offshore structure. The group comprises of a team of engineers and designers well equipped with international design codes and experienced in executing all types of structural analysis design and drafting assignments. The various services covered include:

  • Structural analysis and design
  • Foundation and reinforced concrete analysis and design
  • Cut and fill design
  • Site drainage and road design
  • Structural steel connection design and detailing servicesSpecialized Tools Used:STAAD.Pro, PMDS, SACS, and a number of internally developed structural and foundation design programs.

7. Project Management Consultancy

Project planning and management form the basic foundation of all EPC projects. PT. Depriwangga Engineering’s vast project management team is well equipped with some of the latest project management tools and information systems to perform project management, scheduling, monitoring and cost control etc. The execution team is fully equipped to synchronize the activities of design, engineering, procurement, inspection & expediting, store management, construction, pre-commissioning & commissioning by means of an integrated system.

PT. Depriwangga Engineering has deployed some of the best tools for project scheduling and planning with an on-line monitoring & reporting system that tracks and corrects slippages in schedules and resources over a period of time. These tools also provide an extensive management reporting system for details of planning, monitoring and progress. In addition, PT. Depriwangga Engineering also provides procurement support services starting from vendor identification, vendor development, evaluation of offers.

◢ Project Management Services
◢ Process & Safety Engineering
◢ Civil/Structure Engineering
◢ Mechanical (Static & Rotating) Engineering
◢ Package Engineering
◢ Piping & Pipe Line Engineering
◢ Instrument Engineering
◢ Electrical Engineering