Page 33 - OGA-Sept-2015
P. 33
GORGON/WHEATSTONE FEATURE
OIL & GAS AUSTRALIA
Diverse Welding completes Wheatstone work
STAINLESS steel and super duplex Upon completion of testing, the MQC
materials were used for design and plates were shipped back to PT Profab
fabrication work on Chevron’s Wheatstone Indonesia for installation into the SSIV
project completed by Perth-based manifold.
Diverse Welding Services (DWS) earlier
this year, due to their corrosion resistance DWS used an autogenous orbital
properties. welding process due to its excellent control
of welding variables, repeatability of
DWS was contracted to fabricate, install application and maximisation of corrosion
and test small-bore tubing and free issue resistance of exotic materials, Mr Lipscome
components to Multiple Quick Connect said.
(MQC) plates for the Wheatstone project,
which Chevron reports is just over 60 per Orbital welding is an automatic method
cent complete. of Tungsten Inert Gas welding of thin
tubes, usually without filler wire, this
The main free issue components consisted method allows for a uniform weld profile
of logic caps, cobra heads, single line and excellent gas shielding giving minimal
couplers and acid injection items, DWS said. health tint, the company said.
Small-bore interconnecting tubing was DWS completed 204 welds for the
required on four MQC plates serving Wheatstone project, which it said passed
the subsea isolation values (SSIV) for the 100% radiographic/liquid penetrant testing
44 inch trunkline, 24 inch and 14 inch in accordance with American Society of
flowlines and the 18 inch Apache/Kufpec Mechanical Engineering (ASME) B31.3
line. normal fluid service (NFS).
DWS general manager John Lipscombe Post-weld cleaning of internal surfaces
said SAF2507 super duplex stainless steel was not required due to the gas and heat
was used for the MQC plates which were input control, with the external surfaces
fabricated by PT Profab Indonesia and then around the welds were abrasively treated as
shipped to DWS in Perth for detailed fit-out required for aesthetics reasons, the company
using autogenous orbital welding processes. said. l
CELEBRATING 34 YEARS OF PUBLISHING IN AUSTRALIA ENERGY PUBLICATIONS 31
OIL & GAS AUSTRALIA
Diverse Welding completes Wheatstone work
STAINLESS steel and super duplex Upon completion of testing, the MQC
materials were used for design and plates were shipped back to PT Profab
fabrication work on Chevron’s Wheatstone Indonesia for installation into the SSIV
project completed by Perth-based manifold.
Diverse Welding Services (DWS) earlier
this year, due to their corrosion resistance DWS used an autogenous orbital
properties. welding process due to its excellent control
of welding variables, repeatability of
DWS was contracted to fabricate, install application and maximisation of corrosion
and test small-bore tubing and free issue resistance of exotic materials, Mr Lipscome
components to Multiple Quick Connect said.
(MQC) plates for the Wheatstone project,
which Chevron reports is just over 60 per Orbital welding is an automatic method
cent complete. of Tungsten Inert Gas welding of thin
tubes, usually without filler wire, this
The main free issue components consisted method allows for a uniform weld profile
of logic caps, cobra heads, single line and excellent gas shielding giving minimal
couplers and acid injection items, DWS said. health tint, the company said.
Small-bore interconnecting tubing was DWS completed 204 welds for the
required on four MQC plates serving Wheatstone project, which it said passed
the subsea isolation values (SSIV) for the 100% radiographic/liquid penetrant testing
44 inch trunkline, 24 inch and 14 inch in accordance with American Society of
flowlines and the 18 inch Apache/Kufpec Mechanical Engineering (ASME) B31.3
line. normal fluid service (NFS).
DWS general manager John Lipscombe Post-weld cleaning of internal surfaces
said SAF2507 super duplex stainless steel was not required due to the gas and heat
was used for the MQC plates which were input control, with the external surfaces
fabricated by PT Profab Indonesia and then around the welds were abrasively treated as
shipped to DWS in Perth for detailed fit-out required for aesthetics reasons, the company
using autogenous orbital welding processes. said. l
CELEBRATING 34 YEARS OF PUBLISHING IN AUSTRALIA ENERGY PUBLICATIONS 31
