10.1.1 Testing procedure should be specified (and agreed with the
Owner/Operator) to ensure that casting, forgings and other items used in the
fabrication of the fluid swivel system housing are in accordance with the Rules for
Materials.
10.1.2 Seal designs and materials should be Type Tested by dynamic test which
simulates a number of years of service under the conditions and with exposure to
fluid representative of the design condition and depressurisation. The number of
years of successful service to be proven by testing should be agreed with LR.
10.1.3 The following tests are to be performed on each swivel; however, test
procedures should be developed by the manufacturers and approved by LR:
- Hydrostatic proof test.
- Pressure fluctuation test.
- Cyclical loading test.
10.1.4 Full rotation tests in each direction and cyclic partial rotation tests
should be performed at all operating pressures. Rotation speeds should model
real-time conditions to represent accurately the intended application and also to
prevent damage to the seals.
10.1.5 Testing is to be conducted in accordance with an approved test procedure
in the presence of a Surveyor. The procedure is to address an acceptable leakage
rate.
10.1.6 Rotational and oscillation tests including rest periods are to be performed at design
pressure with measurements taken of starting and running torques. The rotation speed
is to be one degree per second.
10.1.7 The electrical swivel is to be subject to dielectric and insulation resistance
testing in accordance with IEC 60034-1.
10.1.8 A continuity test is to be performed with the electrical swivel in rotation.