GNY Swivel Joints Testing
GNY Mining/ Mooring Swivel Joints Testing
12″ Style 30F Under Test
Swivel Joint Bending Moment/Radial Load Test: At GNY facility on a special test rig with a formal test procedure to simulate field extreme conditions.
Radial Load/Bending Moment Test Procedure:
A 20,000 lb. Radial load applied to the Split Flange Design Swivel Joint Housing, A 40,000 lb.-inch bending moment applied to the swivel joint. An internal hydrostatic pressure of 275 P.S.I. applied to the swivels.
The Swivel is cycled through 30 degree swing in a period of two minutes, recording internal pressure hydraulic ram pressure and inspecting for leaks. The Swivel is then disassembled and examined for possible deformation or damage or Brinelling. Brinelling damage is defined as any permanent indentation in the race when the width of the indentations is equal to or
greater than 8% of the ball diameter. After successfully completing of above tests, the bending moment of 150% (600,00 lb.-in) applied, keeping the radial load constant at 20,000 lb. during this test.
Test Results: Above results for 12″ Swivel Joint (for 100% and 150% of loading) recorded, witnessed and certified by GNY. Met client’s specification.