STAUFF ACT Clamp in the Standard Series
(Colour of rubber strips for illustrative purposes only)
Field tests on a rig in the
Dutch sector of the North Sea
Norsok Z-010 Standard
Norsok is a Norwegian industry initiative to add value, reduce cost and lead time and remove unnecessary activities in offshore field developments and operations. The Norsok standards are developed by the Norwegian petroleum industry and are jointly issued by the Norwegian Oil Industry Association (OLF) and the Federation of Norwegian Engineering Industries (TBL). They are administered by the Norwegian Technology Standards Institution (NTS).
The purpose of the Norsok industry standards is to replace the individual oil company specifications for use in existing and future petroleum industry developments, subject to the individual company’s review and application.
The Norsok standard Z-010 (Revision 3) published in October 2000 (Section 7.3: Tubing Installation) states the following:
“Tubing clamps shall be made of non-corrosive material, stainless steel AISI 316 and/or flame retardant plastic. Galvanic corrosion between tubing and tubing support system shall be avoided.
The tubing clamp shall, when installed, not allow for water / seawater to be accumulated between tubing and tubing clamp on wall, this is to avoid crevice corrosion.”
Download from www.standard.no
The Product Solution: STAUFF ACT Clamps
Design
STAUFF ACT Clamps are an innovatively designed solution for the installation of instrumentation pipework where anti-corrosion properties are of paramount importance (e.g. in the fields of offshore oil and gas exploration and processing).
The design – based on the tried and tested STAUFF Clamps according to DIN 3015 – offers installation time reduction and long term cost savings due to extended service intervals.
The STAUFF ACT clamp body design is available for the Standard Series (DIN 3015, Part 1) and the Twin Series (DIN 3015, Part 3) to cover the most commonly used metric and imperial pipe diameters from 6 mm to 25,4 mm (from 1/4 inch to 1 inch).
Alternative cofigurations and pipe diameters are available on request.
Development
Throughout their development, STAUFF ACT Clamps have been subject to stringent testing at the STAUFF in-house laboratories located in Werdohl, Germany.
In order to ensure credibility of the product, the development process has also involved independent testing:
To achieve this, the services of the Centre for Corrosion Technology at Sheffield Hallam University’s Materials and Engineering Research Institute have been utilized, applying advanced techniques with equipment such as high resolution surface metrology and form measurement systems.
In a controlled laboratory environment, continous hot salt spray tests according to ASTM B117 have been applied for periods of 2000 hours to various clamp configurations holding 316 stainless steel tubing.
In addition to that, independent field test samples – located on an oil rig in the Dutch sector of the North Sea – have also been assessed at the Sheffield Hallam University facilities.
Both independent tests have recorded positive results in favour of the anti-corrosion attributes of the STAUFF ACT Clamp.
Fully detailed test reports are available upon request.
Conformity
The clamp bodies of the STAUFF ACT Clamps are made of flame-retardant PPV0 plastic material, which is and V0-classified according to UL 94 (Underwriters Laboratories: “Tests for Flammability of Plastic Materials for Parts in Devices and Applications”, identical with IEC/DIN EN 60695-11-10 and -20 and the Canadian CSA C 22.2).
STAUFF ACT Clamps have been constructed in compliance with section 7.3 (Tubing Installation) of the Norwegian offshore standard Norsok Z-010 (Revision 3, published in October 2000), API RP 552 and NACE SP 0108-2008 (section 13).
Also Available In Stacking Format
Increased flexibility for installing Stauff ACT clamps thanks to the use of safety locking plates and stacking bolts
The combined usage of specially designed SIG safety locking plates and AF stacking bolts, now also makes it possible to mount multiple clamp bodies of the identical size directly on top of one another.
Installers and users benefit from the increased flexibility in the design and layout of pipework systems, because several lines running close together no longer have to be positioned side by side.
As with all recommended metal components in connection with ACT clamps, the safety locking plates as well as the stacking bolts are also of 1.4401 or 1.4571 materials. At Stauff, in contrast to regular stainless steel components, contamination through metallic and non-metallic particles during production, processing and storage is virtually impossible
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