• Project Name: Coker Valve Switch Project
  • Client: ExxonMobil
  • Location: Torrance Refinery, Torrance, California
  • Type of Contract: Reimbursable
  • Project Value: Coker Valve Switch – $26M Capital, Paton scope – $8M
  • Completion Date: 2015


The primary objective of the project was to provide a protective interlock system to prevent inadvertent operation of Coker valves “out of sequence”.  The scope included:

  • Automation of approx. 144 valves; 120 with new MOV actuators and 24 modifications to existing MOV actuators
  • Addition of new valves for “double block” configuration on condensate and blowdown lines
  • Provide a new RIE to house Triconex SIS, Honeywell DCS equipment and redundant UPS equipment
  • Provide new SIS and Process Control systems included 3 new Triconex TMR systems, 1 HPM and 2 HMIs running with Wonderware graphics
  • Installation of new Priority 1 Alarm/Bypass Displays @ Coker Control Room Console
  • Networking of new SIS and Process Control Systems involving new fiber optic backbone and network switches
  • 480 Volt distribution for RIE and MOVs
  • Paton’s scope includes:


Paton’s scope includes:

  • Front End Engineering Development (FEED Package)
  • TIC estimate development
  • Detailed mechanical and civil/structural design including laser scanning and 3D modeling for new steel, piping and valves
  • Detailed I/E design including new 480 VAC distribution, Fiber Optic Backbone, instrument cabling infrastructure and networking
  • Supply all tagged equipment including RIE c/w DCS, SIS and UPS equipment
  • Provided actuation of existing valves to include MOV actuators
  • Supply all new Process Control/SIS/HMI equipment
  • Programming, staging, and factory acceptance testing for all DCS, SIS and HMI systems
  • Construction, Commissioning and Startup Assistance
  • Operator/Maintenance Training