DNV Type approval certificate

The independent foundation DNV (Det Norske Veritas) has type approved Nord-Lock locking washers. The certification process took over two years and included independent tests (vibration test according to DIN 65151 and accelerated vibration test according to NASM 1312-7). Moreover; Nord-Lock's production and quality assurance system was thoroughly investigated.

DNV recommends Nord-Lock for preloaded bolted assemblies subjected to dynamic, fatigue, impact and vibration induced loading.

The type approval certificate ensures that Nord-Lock complies with the following:

- DNV’s “Rules for certifications of lifting appliances”, September 1994

- DNV’s Offshore Standard DNV-OS-C101 “Design of Offshore Steel Structures” October 2000

- DNV’s Offshore Standard DNV-OS-E101 “Drilling Plant” October 2006

- DNV’s Offshore Standard DNV-OS-E201 ”Hydrocarbon Production Plant”, October 2000

- DNV’s “Rules for certification of Ships”, Part 4, Chapter 4 “Rotating Machinery, Power Transmission”, January 2007

Contact Details and Archive...

• Nord-Lock Ltd

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