7.1.1 The requirements of the Rules relating to the testing of Class 1
pressure vessels, piping, and related fittings, including hydraulic testing
apply.
7.1.2 After installation on board the unit, the steering gear is to be
subjected to the required hydrostatic and running tests.
7.1.3 Each type of power unit pump is to be subjected to a type test. The type
test shall be for a duration of not less than 100 hours and the test arrangements
are to be such that the pump may run in idling conditions, and at maximum delivery
capacity at maximum working pressure. During the test, idling periods are to be
alternated with periods at maximum delivery capacity at maximum working pressure.
The passage from one condition to another should occur at least as quickly as on
board. During the whole test, no abnormal heating, excessive vibration or other
irregularities are permitted. After the test, the pump is to be opened out and
inspected. Type tests may be waived for a power unit which has been proven to be
reliable in marine service.