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Pressure tests<br />
The lower kelly valves, kelly, kelly cock,<br />
drill pipe safety valves, inside BOPs and<br />
top drive safety valves, should be tested<br />
with water pressure applied from below<br />
to a low pressure of 1,38 to 2,1 MPa<br />
(200 to 300 psi) and then to the rated<br />
working pressure.
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