Welcome to the Mirage Machines Portable Performance Blog

How to choose the right diamond wire saw

Posted by Alan Hillier on Jul 1, 2016 2:22:12 PM




There are a number of different kinds of heavy duty diamond wire saws available to rent or purchase and choosing the right machine along with all of the relevant the options and accessories for your particular needs can seem a little daunting.

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Topics: pipeline decommissioning, subsea cutting, decommissioning

Hot tapping in subsea environments: overview and considerations

Posted by Alan Hillier on Jun 21, 2016 11:00:00 AM



Above: The Mirage CHT1000-SSSW subsea hot tapping machine 

Hot tapping challenges

Although the hot tapping has process has been carried out routinely by pipeline engineers for many decades, each project presents different obstacles to be overcome such as:

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Topics: hot tapping, subsea machining, subsea cutting, subsea hot tapping

Using a keyway cutter for in-situ repairs

Posted by Alan Hillier on Jun 15, 2016 11:00:00 AM



What is a keyway?

A keyway is the slot created in a shaft to accept a ‘key’ that connects a rotating machine element to a shaft. The key prevents relative rotation between the two parts, enabling torque transmission. Commonly used machine components using a keyed shaft include gears, pulleys, couplings, motor pumps and turbines.

The keyway method has been used commonly in the power transmission industry for many years. When used correctly, this method guarantees that virtually no relative motion can take place between a shaft and its respective connected component.

Download the Power Generation Case Study Pack

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Topics: On-site machining, milling, keyway cutting

Machining valve seats with a valve boring machine

Posted by Alan Hillier on Jun 8, 2016 4:00:00 PM




Machining valves used in the energy sector

Replacing faulty valves in the oil, gas and power generation industries can be very expensive and difficult to carry out. This is not only because of the expense of replacement parts and the manpower needed, but decreased plant availability has significant cost implications.

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Topics: On-site machining, valves, portable machining, valve boring

Compact flanges: applications, benefits and machining kits

Posted by Alan Hillier on May 24, 2016 9:00:00 AM


Above: The compact flange a sealing ring and angled faces which come together when the bolts are tightened


Applications for compact flanges

Compact Flanges are commonly used in offshore rigs and various subsea installations including;

  • Flexible and rigid risers
  • Subsea production flowlines
  • Christmas trees
  • Subsea gas-lift and water injection flowlines
  • Subsea metering equipment
  • Subsea, valves, pumps and compressors

Joints of this type are thought to be stronger than the actual pipe they are connecting and also have better fatigue properties than the flange pipe weld. This means they are specified for critical areas where conventional flanges are not accepted. There are commonly 3 sealing faces in a compact flange joint, with the ‘heel’ sealing the internal bore.

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Topics: On-site machining, portable machining, flange integrity, flange facing, compact flanges

Flange Facing Buyers Guide - Mirage Machines