Subsea... 

Hatch Opening

Application

Pilot valve actuator on inlet and extraction turbine valves at a pulp mill

Customer

Canfor Pulp is located in Britsh Columbia, Canada and is a leader in the integrated forest products industry. Canfor Pulp owns and operates three mills in Prince George, BC which produce fully bleached, high performance Kraf pulp.

The Challenge

Canfor’s turbine pilot valve was operated with an electro hydraulic actuator that was very sensitive to oil pressure, temperature and cleanliness. This made it difficult for Canfor to calibrate and maintain calibration of the actuator, leading to inconsistent control. The actuator also leaked oil causing decreased efficiency and an increased need for maintenance. Obsolescence of the electro-hydraulic actuator further increased the maintenance costs. Canfor required a solution that was accurate, easily maintained, easy to set up and control, and inexpensive to repair.

The Solution

Exlar’s Tritex II actuator was the ideal solution to control Canfor Pulp’s turbine pilot valve. The all electric actuator limited the oil usage to the main valve controls, eliminating the sensitivity of pressure and temperature swings. With its high repeatability and accuracy, the Tritex II actuator had no problem maintaining calibration and perfect control of the pilot valve. Switching to the Tritex II actuator significantly decreased the amount of maintenance required on the pilot valve, and therefore increased the turbine’s up time. Exlar’s Tritex II actuator also offered simple calibration, set up and monitoring and was easily integrated into the existing DCS system with a 4-20mA command signal. In addition, Canfor can now monitor the Tritex II actuator remotely using serial communication to ensure that it is operating within load and temperature specifications for preventative maintenance. Canfor now has more consistent control of the steam turbine’s speed compared to the previous electro-hydraulic solution.

High Acceleration

Reduced Downtime

Improved Product Output

Reduced Maintenance Costs

Results
  • Reduced maintenance which led to increased turbine up time
  • Increased efficiency through the reduction of oil leaks
  • More consistent control of turbine speed
Further Information

Griffon Hoverwork site visit

We were delighted to be able to visit one of our longest-serving customers in...
Read Full Story

Olsen join the British Gear Association!

We have joined the British Gear Association! THE BGA is the UK Centre of...
Read Full Story

10 years at DSEI for Olsen Actuators!

DSEI 2023 was our best yet and a great way to cap off a decade of attending...
Read Full Story

Featured in the DSEI 2023 Preview Brochure!

We are delighted to be featured in the Preview Brochure for the upcoming 2023...
Read Full Story

Prosecco in the Park!

Sci-Tech Daresbury is a fantastic place to work. The facilities and work that...
Read Full Story

LCR Grad Scheme - Meet the Employer

As we grow, our commitment to supporting the next generation of talented...
Read Full Story

Space Comm 2023

Olsen Actuators attended the Space Comm Expo at Farnborough International...
Read Full Story

Team Day at Catton Hall!

The Olsen Actuators team were treated to a day out at Catton Hall Outdoor...
Read Full Story

Instrumentation Analysis and Testing Exhibition

The Olsen Actuators team were on the grid at the 2023 Instrumentation Analysis...
Read Full Story