I'd thought that the hydraulic test would require some pretty sophisticated equipment; however, this is not the case.
First the far end of the tubes need to be blocked. The sealed ends can be slackened to let air out so that there is only incompressible water contained.
|Blocked superheater tube-ends|
|Check the gauge reading...|
|About 565 psi (39 bar)|
(Any suggestions for the owner to do the hard work are met fiercely by the camera lens!). Clearer video on YouTube.
The pressure has to be held for at least 30 minutes. If satisfactory, then the test is deemed passed and a certificate written on the spot and issued.
|Al fresco computing|