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Full scale Testing
Through the Full-Scale-Test Laboratory Centro Sviluppo Materiali S.p.A. has opened a specialized window on the world of OCTG products development and characterization. Based on “premium connection” and “ pipelines and ducts” sections, the lab is involved in the On- and Off-shore technology business, representing a very specialized and unique testing supplier for steel tubular products manufacturers and end-user Oil&Gas companies. Premium Connection Section This section is endowed with the following testing apparata: - one bucking unit, equipped with a dedicated data acquisition PC, and designed to handle joints with a diameter range between 2 3/8” and 14” and exerting a maximum torque of 68kN*m (50000lb*ft). It is addressed to submit ”Premium Joints” for:
- the characterization and qualification in terms of galling resistance through repeated Make-up and Break-out cycles;
- Over-torque tests;
- Torque-to-yield tests.
- one combined loads facility developed to submit “Premium Joints” to:
- sealability tests with combined loads (i.e., tension, compression, internal pression, external pression, bending);
- failure tests.
Apart from the data acquisition Hardware and Software, this equipment taylored to manage Lmax = 2000 mm and fmax = 356mm (14”) specimen, has the following characteristics:
- Maximum tension 13 MN applied force;
- Maximum compression 10 MN applied force;
and is furtherly supported by:
- two bending systems with two levels of maximum applied load (respectively, 70kN*m e 300kN*m applied torque;
- one torsion system with a capaciity of maximum 50kN*m;
- four pressure intensifiers (two for gas and two for liquids) able to exert a 2500 bar maximum pressure;
- one thermal cycling system designed to check the “Premium Joints” sealability behaviour during thermal cycling coupled with combined tension and internal pressure.
This equipment can submit the specimen to a temperature variation through a coupled induction coil and forced air/water spray nozzle for a temperature cycling between 250°C and room temperature.
- One fatigue equipment set to carry out tests by combining tension and internal pressure loads, with plain bending exerted at low frequency (5 Hz), at a maximum applied torque of 50kN*m.
The section is also equipped with: - external pressure vessels with max pressure of 2000 bar;
- a multiple specimens (up to 6) oven for 2 3/8” to 14” wide items with a maximum operating temperature of 350 °C;
- two single specimen ovens with diameters from 2 3/8” to 10 3/4” and a max temperature of 500 °C.
These equipments permit to characterise materials and components in terms of:: - Fatigue
- Fatigue of welded joints for offshore structures;
- Fatigue of longitudinal welded steel linepipes;
- Fracture
- Drop weight tear test;
- Large scale fracture mechanics (wide plate);
- Defects in girth weld at low temperature;
- Ductile/Brittle fracture
- West Jefferson test at low temperature;
- Burst test for fracture propagation on linepipes (up to 56”);
- Third part external damage:
- Simulator of third part external damage on linepipe;
- EAC of damaged linepipes (pressure cycling plus environment) and cathodic protection;
- Hydraulic test on damaged/sound pipes;
- Pipeline construction and service for test beds
- In field cold forming of steel linepipes;
- Full monitored loop for simulating service conditions;
- Combined loading on tubulars and linepipe.
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