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

£4m sustainability boost for Liverpool City Region research campus

Olsen's headquarters at Sci-Tech Daresbury is to receive a £4 million...
Read Full Story

All I want for Christmas is a new website!

Build it and they shall come...! Well it looks as though that has come true as...
Read Full Story

ANCA Motion new distribution agreement!

We are delighted to have signed an agreement with Australian, ANCA motion...
Read Full Story

eVTOL start up tests

Very exciting to see the Cranfield Aerospace and Rolls Royce JV power up and...
Read Full Story

Olsen joins Subsea UK

Olsen have joined up with Subsea UK as a registered member! Subsea UK is the...
Read Full Story

Dutch ATB host Exlar European Sales Conference

Exlar has a new CEO and General Manager David Dieter and he brings great...
Read Full Story

AGM, Team building + Christmas Lunch

Following on from a successful 2019 and the Crystal Maze in July we decided to...
Read Full Story

Olsen attended supply chain Expo at the new £20m AMRC Airbus facility

Wales is a centre of excellence for aerospace manufacturing and Maintenance,...
Read Full Story

DSEI Expo 2019

As part of the NDI EEF Make UK cluster Olsen exhibited opposite the Australia...
Read Full Story