M/V Harefield

Vores referencer er på engelsk. Tilbage til oversigt.

This repair included:

Measurement of rudder stock dimensions and of rudder stock misalignment.
Full MP inspection of rudder stock.
Full ultrasonic inspection of rudder stock.
Test of tiller onto rudder stock for measuring of position.
Manufacture of new upper end of rudder stock in S355J2G3 material with 3.2 certificate.
Preheating and welding of upper and lower parts together according to WPS-X370 1.2.
Post Weld Heat Treatment of welds and stress relieve according to ClassNK rules.
Straightening of rudder stock after welding and post weld heat treatment.
Machining of upper end and over lay of welds on rudder stock to final dimensions.
Fitting of rudder stock cone with Tiller.
Manufacture of stainless steel liner for rudder stock.
Milling of keyway in rudder stock upper cone in aft position according to original drawing.
Painting of rudder stock for corrosion protection.
Milling of new keyway in correct position.
Manufacture of new hardened plates for tiller forks.
Manufacture of key for tiller in C45 material.
Manufacture of 6 pcs. Rudder bolts in S355J2G3 material with 3.2 certificate.

Final inspection and permanent approval of the repaiur by ClassNK.