Do not consider the test complete until all specified
Periodic operational pressure tests should be
inspection points have been recorded as satisfactory and
conducted under operating pressure (with the service
fluid) on all shipboard piping systems once a quarter.
test pressure has been maintained. Correct or repair all
At least once a year, conduct this test by pressurizing
leaks. Rehydro all repaired assemblies or portion of
affected assemblies to the required test pressure.
the system one section at a time, to detect leaking valves
and to ensure proper operation of all the valves in the
Operational pressure tests (commonly called "J"
pressure tests) are performed periodically to determine
the integrity (leak tightness) of a system. Operational
This chapter has given you a basic knowledge of
tests are nothing more than visually inspecting the
radiographic tests, magnetic particle inspections, liquid
penetrant tests, ultrasonic inspections, hydrostatic tests,
system or repaired piping assembly while operating the
system at design pressure. Operational pressure tests
and nondestructive testing symbols. Use this
knowledge along with the appropriate NAVSEA
are also performed instead of hydrostatic tests after
certain repairs involving mechanical joints. The basic
technical manuals and publications, and on-the-job
purpose of an operational test, as with a hydrostatic test,
experience under a qualified supervisor. You will soon
perform these tests in a professional manner and with
is to ascertain that the system perform its intended
function safely and reliably.