EEC (Eta Engineering Consultants) has extensive industrial experience in all aspects of Instrumentation design. EEC’s Instrumentation staff consists of Electrical, Chemical, Mechanical engineers and Piping Designers. Upon a client’s request EEC will provide a complete instrument dossier. This collection can include highlighted P&IDs, locations drawings, specification sheets, calibration data sheets, initial set points for specific instruments, and loop sheets with all connections between the field instrument and the process control system. The level of design consideration reduces cost during the initial point to point pre-commissioning checkouts, acceptance testing at commissioning, routine maintenance and troubleshooting. EEC’s previous design experience covers a wide range of control instruments, systems and processes. Our Instrumentation team has provided instrumentation solutions for all area classifications and process locations.
The below-captioned items are not all-inclusive of EEC’s capabilities; rather it supplies some insight into EEC’s instrumentation engineering capabilities.
Instrument Selection and Specification
EEC has the experienced staff to select and specify the instrumentation desired by our clients but also understands the application and process related to the instrumentation, including limits to specific instrumentation effecting reliability. Prior to the selection of any instrument, EEC works closely with our clients to understand the process and internal instrument requirements. Once the process and internal specifications are understood EEC can generate a detailed instrument specification (vendor specific or generic to the manufacturer) which is process and application specific. Upon the clients request EEC can interface with the instrument supplier to obtain detailed quotes, bill of materials, and budgetary construction estimates. EEC has decades of experience with Rosemount, Honeywell, Neles-Jamesbury, Fisher Controls, Cashco, Ashcroft, and many more.
Instrumentation Installation Design
Instrumentation design doesn’t stop after the instrument has been selected and procured. EEC’s instrument engineers understand the mounting and installation design is also a critical part of our service to the client. EEC will visit our client’s site to talk with operations and engineering personnel to determine the best installation solution.
A well maintained instrument database is critical to ensure proper tracking of site instrumentation. EEC is well versed with various instrument database solutions. The database could be as simple as Microsoft Excel or as complex as Smartplant Instrumentation (INtools) or Microsoft Access. During the instrumentation design cycle EEC can update our client’s database to reflect the changes/additions. EEC can also provide a detailed list of all the changes/additions which allows the client to internally update the database.
Loop Sheets and P&IDs
It is critical in any facility to have accurate instrument loop sheets and P&IDs. EEC has qualified individuals to create or modify loops sheets in Smartplant Instrumentation (INtools), AutoCAD or Microstation. We not only have the experience to modify P&IDs to reflect the changes brought about by our design but also walk down and verify P&IDs in the field. Our trained CAD personnel will clearly show the revisions to the P&IDs and provide updated drawings accordingly.
Communication Systems and Protocols
EEC has worked with Radio Frequency (RF), Fiber-optic and hard wired communication systems. Each of these systems has their own set of communication protocols. As process instrumentation grows the amount of smart field devices are also increasing. This also increases the amount of data being communicated from the field back to the control room or instrument shelters. A majority of smart field devices utilize the existing analog wires to send and receive digital information to and from the field. This information can also be sent via dedicated digital wires, fiber-optic wires or RF technology. The information allows the host system to communicate with the smart devices.
EEC has staff members that have more than 30 years of instrumentation experience ranging from instrument technicians to instrumentation engineers. These highly trained individuals can provide on-site training to our client’s instrumentation staff. Given our level of “hands on” experience EEC can not only provide theoretical knowledge but also real world solutions. The training can be customized based on the student’s needs and experience levels.
Electric Heat and Steam Tracing Design
In many climates our clients require electric heat tracing or steam tracing to protect their process lines and instrumentation.
The design of electric and steam tracing is not just adding a heat source to process lines and instrumentation manifolds. EEC’s design team has the experience to review process and instrumentation specifications to provide a complete installation design package. EEC will select an appropriate heat tracing method and thermal insulation to insure the process lines are stable and within control limits. The design team can also design the power to support the electric heat tracing or steam and condensate manifolds to support steam tracing.
Safety Instrumented System (SIS) Design
A SIS is designed to monitor and detect when an unacceptable or dangerous process condition occurs. Upon detection, the SIS will achieve and maintain a predefined safe state for the process under control. Safety Instrumented Systems are separate and independent from the processes Distributed Control System (DCS). A typical SIS is composed of flow transmitters, pressure transmitters, shutdown stations, actuators, control system and etc.
EEC’s SIS design team is familiar with the SIS safety life cycles found in ANSI/ISA S84.01-1996, IEC 61508, and IEC 61511. Generally, internal standards and practices are developed along with Safety Integrity Level (SIL) targets. A Layer of Protection Analysis (LOPA) document is then used to prepare Safety Requirement Specifications (SRS). The SRS is then used to design the SIS. Typically, EEC partners with our external risk assessment experts to insure a high quality product is produced for our clients.
EEC also has the experience and knowledge base to help make the construction phase go smoothly. EEC doesn’t deliver a paper design package and stop. EEC’s experienced staff of Instrumentation Engineers and Technicians know what it takes to implement an instrumentation package in the field. They understand and have assisted in all phases of construction including planning, installation, commissioning, etc.
EEC has a dedicated team of CADD staff members that will take redlines and incorporate them to generate a “for record” package. This ensures the final “for record” package matches what was constructed. This is highly beneficial for future upgrades and trouble shooting.
EEC is a multidiscipline engineering firm and we can provide this support across all disciplines: Mechanical, Electrical, Civil, Structural, Process, etc.