Valve Aftermarket – Subsea

Author: Are Halvorsen

Company: Nordic Valve Services AS


Valve Aftermarket – Subsea

  • Challenges for the valve maker – Qualification
  • Challenges for the aftermarket -entrepreneurs
  • Local workshop solution

A valve makers challenge

  • Qualify first then RFQ
    • Endurance testing
    • PR2 testing (various temps…API17D/API6A + end users spec)
    • Hyperbaric testing
  • Willingness from entrepreneur
    • Man-hours, technical support follow up and inspection
    • Huge risk – experience vs technical and commercial capabilities
    • Under capacity

A valve makers challenge


Aftermarket challenge

  • Subsea Production System Entrepreneur
    • 3rd Party Valves
    • Presence of local valve care from OEM
    • Lack of local independent valve aftermarket specialist
  • Independent after market company
    • Experience with simpler / larger structures
    • More and more xmt’s, BOP’s, pump modules = 3rd party valves
    • Lack of local independent valve aftermarket specialist

Local workshop solution

  • Facilities
    • Capable of handling larger structures
    • Located on the supply base
    • Customer integrated systems
  • Technology
    • Welding
    • Hard-facing
    • NDT
    • Machining
    • Testing
    • Surface treatment

Local workshop solution – Welding

International Welding Services:

Qualification according to ISO 3834-2


Local workshop solution – Hard facing

  • Norsok
    • NHF1, Stellite 6
    • NHF2, TCC
    • TR2000
    • ZH201

Local workshop solution – NDT

  • NDT services available with the following methods used:
    • Visual inspection
    • MT, PT, ET, RT, UT, PMI & HT
    • Short mobilization time

Local workshop solution – Machining

Local machining

  • Quick turnaround
  • Document control
  • Tolerance control
  • Modification supervisor

Local workshop solution – Testing

Onsite testing facilities:

  • Testpits
  • Test chambers

Local workshop solution – Surface treatment

  • Industrial surface treatment according to NORSOK M-501 and TR0042 Industry specific standards onshore and offshore
  • Inspection and consulting (FROSIO)
  • Metalizing

Local workshop solution – Conclusion

  • Independent vendor
    • NDA with OEM and vendors
    • ISO 9001-08 / 3834-2
    • “One stop shop”
  • Close proximity to intermodal infrastructure and the largest offshore port in Europe.