Case Study Mirage machines

VESSEL NOZZLE WELD PROFILES

willhartshorn Case Studies, Linear Milling Leave a Comment

REQUIREMENT: Large 5m diameter vessels with heavy schedule 120mm plate thickness pipe required holes and weld preparations to be made for the nozzles. Normally, a weld prep would be flame cut and then hand ground to the required angle or profile. SOLUTION: Mirage developed a system to mechanically cut the weld profile on the vessel. For the weld prep, the …

Case Study Mirage machines

VESSEL FLANGE FACING

willhartshorn Case Studies, Flange Facing Leave a Comment

Above: The flange facing machine base mounted into the flange bore, showing the setting straps. – Photo credit: Carlos Garcia This case study describes how a Mirage Flange Facing Machine was rapidly deployed to carry out an emergency repair at a vessel fabrication shop. REQUIREMENTS: A fabrication shop responsible for the vessel manufacture used in the petrochemical industries needed a …

Case Study Mirage machines

VALVE BORING

willhartshorn Case Studies, Custom Leave a Comment

The Mirage VB650 boring machine REQUIREMENT: Steam valve seat removal and refurbishment. SOLUTION: Development and use of the Mirage VB650 boring machine. OUTCOME: Deep boring capability was achieved (This was previously not possible).

Case Study Mirage machines

TURBINE CASING REFURBISHMENT

willhartshorn Case Studies, Line Boring, Linear Milling Leave a Comment

Above: The boring machine used for machining the steam sealing faces assembled in one half of the turbine casing. Above: Mounting a Gantry Mill onto the casing -to enable split lines to be machined. REQUIREMENT 1: Develop a product to machine the steam seal faces on turbine casings. SOLUTION: Mirage developed a product to enabled the steam sealing faces of …

Case Study Mirage machines

INJECTION POINT IN TRACE HEATED SUPPLY LINE

willhartshorn Case Studies, Drilling and Tapping, Drilling and Tapping Leave a Comment

Images above: Test pieces in the workshop. REQUIREMENTS: – To machine an injection point within a heavy wall Super Duplex pipe. – No swarf ingress or tool dwelling. – One chance on offshore application. LOCATION: Islay Project, North Sea SOLUTION: – Mirage provided a complete machine/offshore service package. – A process was identified to series trepan the external of the …

Case Study Mirage machines

TIDAL FIN REMOVAL

willhartshorn Case Studies, Linear Milling, Tidal Fin, Tidal Fin Removal (Wave Power) Leave a Comment

REQUIREMENTS: – Structural plates required removal from tidal turbine monopoles. – Diving time severely restricted to 20 minutes due to tidal direction change and ‘Neap Tide’. SOLUTION: – Plates (1.8m x 150mm x 30mm) removed using a slitting saw. Remaining material removed using face milling. – Quick release tooling used to allow fast project completion. OUTCOME: All machining operations were …

Case Study Mirage machines

SUBSEA WINDOW MACHINING

willhartshorn Case Studies, Linear Milling, Subsea Leave a Comment

REQUIREMENTS: A 26-1/2” conductor required a 1.3 x 0.45m window machining with 50mm radii 9m from the sea bed for a mud dump vent clamp to be fitted. Cold cutting was specified due to the 26-1/2” conductor housing 13-3/8” casing and a power line that could not be damaged during cutting. SOLUTION: Mirage Gantry (GM2000) and Milling Rail (MR1500) were …

Case Study Mirage machines

SUBSEA WELLHEAD REMOVAL

willhartshorn Case Studies, Portable Saws, Subsea Leave a Comment

Above: Initial test cut at Mirage Subsea HQ. Above: Wellhead configuration at subsea depth of 7,000ft. REQUIREMENTS: Our client’s project was to remove a wellhead at a subsea depth of 7,000ft. Achieving this involved cutting an X-70, 36” diameter, 2” wall pipe, 3” above the mudline. SOLUTION: Although a diamond wire saw would be capable of making the cut on …

Case Study Mirage machines

SEAM WELD AND DOUBLER PLATE REMOVAL

willhartshorn Case Studies, Linear Milling Leave a Comment

REQUIREMENTS: – Remove a seam weld from 30” pipeline over 3m length. – Remove anode doubler plates for relocation at 90m water depth. LOCATION: North Sea SOLUTION: – Cold cutting to prevent cutting into the parent pipeline. – Use of Mirage gantry MR1000SS with pipe chain clamping system, fixed feed, and depth stops. – Workshop trials carried out on a …

Case Study Mirage machines

STEAM TURBINE BLADE REFURBISHMENT

willhartshorn Case Studies, Custom Leave a Comment

REQUIREMENT: Develop machines to drill out the blade retaining pins for use when refurbishing turbine blades and to provide an accurate method of cutting the worn and damaged blade tips efficiently and precisely. SOLUTION: Mirage developed the PD760 and BLS760. The PD760 removed the need to use pistol drills with fixtures and reduced the volume of tooling consumed in the …