Client Benefits
- EEC handled design coordination between client staff, contractors, and EEC design staff
- Standard analyzer shelters within plant
- Minimal intrusion related to new instrumentation on existing process lines
- Clear and precise demo drawings
- Detailed Plot Plans showing power connections, power sources, heat trace circuit # and tap points
EEC was asked to provide a drawing package for Electric Heat Tracing to support the instrumentation and process piping of a new Ultra-low Sulfur Diesel process within an oil refinery. The objective was the detailed installation drawing package would document the installation of the entire Electric Heat Trace (EHT) system (EHT tape, power circuits, controllers, electrical distribution switch rack, conduit/cable tray routing, and etc) and provide documentation to support operations (circuit data, plot plans and etc).
EEC talked with the client’s internal engineering staff and project managers to determine all the applicable codes and specifications. After reviewing and understanding these documents,
EEC provided a design solution that not only meet the requirements and codes but provided a cost effective and clear solution. This solution also provided operations with a clear layout of the heat tracing system which allowed for ease of troubleshooting and additions in the future.
EEC was able to take the client’s line list and process information to determine the heat tracing size (Watts/foot), thermal insulation requirements, provide detailed isometrics and installation instructions for each process line and instrument.
EEC examined the capacity of each power source and determined the best location for the heat trace controllers based on the source capacity. EEC also provided a detailed BOM for the entire heat trace design package.
This provided a one stop shop for verifying all the material was ordered, on-site and ready for installation. A detailed plot plan was also provided which illustrated the location of all power sources, controllers, heat trace circuits and tap points.
Key Features
- Heat tracing distribution panel design
- Foundation design
- Cable tray design
- Over 16,000feet (3miles) of electric heat tracing
- Examined the capacity of each power source and determined best location based on operating conditions
The electric heat tracing design consisted of over 16,000 feet (3miles) of heat trace tape. Over 100 individual circuits were included in the design which required six different switch racks. Each switch rack consisted of an appropriately sized transformer, distribution panel and control panel. Each control panel provided alarms and troubleshooting information to support maintenance activities. EEC also provided detailed civil design drawings for footers, conduit and cable tray supports.
