TPT March 2017

I NSPE C T I ON , T E S T I NG & QUA L I T Y CONT R OL

www.read-tpt.com

MARCH 2017

Tubular inspection services and equipment

TUBOSCOPE, a division of National

Oilwell Varco, LP (NOV), is a supplier

of tubular inspection services and

equipment to the petroleum and pipe

manufacturing industry. Its technologies

are used for inspecting new and used

tubular goods to demanding industry

and customer specifications, and include

Amalog

and Sonoscope

electro-

magnetic inspection (EMI) technologies,

and Truscope

, TruWall

and TruScan

ultrasonic (UT) inspection systems.

An example of the capability within

the Tuboscope product line is the

Truscope A/S (Amalog-Sonoscope).

This inspection system combines the

non-destructive techniques of EMI and

UT principles to detect, evaluate and

classify, in a single pass of the pipe

through the system, transverse and

longitudinal, internal and external flaws

as well as wall thickness variations and

laminations.

The Truscope A/S system provides

full-body inspection across a large

range of pipe diameters. The pipes can

be seamless or ERW; manufactured of

ferrous or non-ferrous alloy materials;

and with a variety of end conditions –

saw-cut or cropped, plain-end, threaded,

coupled, and upset or non-upset.

With its combination of EMI (Amalog

and Sonoscope) and UT (Truscope)

techniques, the Truscope A/S satisfies

the latest editions of API 5CT, 5L and 5D,

as well as numerous other international

specifications

for

non-destructive

inspection of tubular products for the

energy industry.

The inspection system comprises two

main sections – the inspection platform

and the computerised inspection

electronics. Placed within a pipe

conveyor line, the pipes are advanced

to the inspection platform. Mounted on

this platform are pinch rolls that contain

the pipe and provide the driving power

to move it at a constant speed though

the three individual inspection heads, or

positioners. The testing sequence is the

Sonoscope first, followed by the Amalog

and ending with the Truscope. All three

positioners are mounted on track roller

systems to allow them to be moved in

or out of the conveyor line for pipe size

change-over or maintenance.

Pipe to be inspected is first conveyed

through the Sonoscope inspection

unit, where a high-strength active

magnetic field orientated longitudinally

is introduced into the pipe. Multiple

stationary detector assemblies, or

‘shoes’, are brought into contact with the

outside diameter pipe surface. Flaws

such as transversely orientated cracks,

rolled-in slugs and pits are detected by

this inspection method.

The pipe is next conveyed through

the Amalog inspection unit, which is

equipped with a dual-shoe detection

system integrated into a rotating mag-

netiser assembly. As the pipe enters the

Amalog inspection unit, a high-strength

active magnetic flux field, circumferen-

tially orientated, is introduced into the

pipe. The rotating detector shoes then

scan the outside surface area of the pipe

circumferentially in a helical path. Flaws

such as longitudinally orientated seams,

cracks and overlaps are detected by this

inspection method.

Tuboscope

– USA

Website:

www.nov.com

sema

systemtechnik GmbH & Co. KG

Bredenhop 27

32609 Hüllhorst /GERMANY

Telefon +49 5744/9318-0

www.sema-systemtechnik.de info@sema-systemtechnik.de

straightening

for diameters from 5 to 220 mm

For each process the right system

•

Automating

e.g. separating and handling systems

•

Straightening

e.g. 2-, 6- and 10-roll-straightening machines

•

Inspecting

e.g. complete NDT inspection lines and

straightness measuring

•

Sawing

e.g. multi head cut systems

•

End Finishing

e.g. deburring, thread cutting, punching

•

Packaging

e.g. bundling and packaging into

round, square and hexagon bundles

straightening machines

for precise straightening of round tubes