TCPL Dewpoint Analyzer

INDUSTRIES
  • Oil & Gas
SERVICES
  • Industrial Automation
  • Analyzers
  • DCS
  • Industrial Electrical & Instrumental
  • Electrical Design
  • Lifecycle/Common
  • Detailed Engineering
  • Management
  • Construction Management
  • Document Management
  • Project Management
TECHNOLOGIES
  • Industrial Automation
  • Analyzers
  • DCS
  • Industrial Electrical & Instrumental
  • Electrical Design
  • Lifecycle/Common
  • Detailed Engineering
  • Management
  • Construction Management
  • Document Management
  • Project Management

The Challenge

The client asked Autopro to complete the engineering and instrumentation (E&I) scope for the installation of a new ZEGAZ Dewpoint Duo unit to monitor a gas stream to the TransCanada Pipeline (TCPL) as part of the TCPL Dewpoint Analyzer project. The selected ZEGAZ unit required 120 VAC power (as well as 120 VAC power for piping heat trace) and would output two 4-20mA analog signals to the DCS to monitor both hydrocarbon and H2O dewpoint. A tee was required AT the TCPL H2S Analyzer probe to accommodate the installation tie-in of the new analyser, with the analyser itself being installed in an existing Analyzer Shack. The location of the ZEGAZ sample out was selected to avoid high back pressures in the H2S analyser’s sweep.

Autopro’s Role

To accommodate the two new analog signals for both the hydrocarbon and H2O dewpoint measurements, a new cable was installed from the analyzer shack to the DCS marshalling cabinet. Panel wiring was installed to an analog input FTA card.
A tee was installed at the TCPL H2S Analyzer probe to accommodate the installation tie-in of the new analyzer. The ZEGAZ sample out was be tied to the ¾” LP Flare connection previously dedicated to the sales sweep out – this is to avoid creating high back pressures in the H2S analyzers sweep. Scaffolding was required to complete this tie-in.

The ZEGAZ Analyzer required 120VAC UPS power; a new 2C #12 TECK cable was installed from the Plant 2 Inverter Panel (circuit IP23) and run through existing tray to the analyzer shack. Two more 2C #12 TECK cables were installed from LPX-2 (inside of the Compressor BLDG.MCC) to power the heat tracing bundles for both the inlet and outlet sample lines.

To accommodate the two new analog signals for both the Hydrocarbon and H2O dewpoint measurements, a new 2PR #18, ACIC, cable was installed from the analyzer shack to JB-219A on the outside of the shack. The homerun cable from JB-219A routes through to JB-219 (outside PL 2 Injection Comp. BLDG); signals were terminated to the JB-219 homerun to be directed to DCS Marshalling Cabinet 2E-R. Panel wiring was installed between 2E-R and 2EF to an analog input FTA card.

Project Success Criteria

  • The proposal was done on time and on budget
  • There were no safety incidents
  • All quality requirements were met

Project Metrics

Project Completion Date