Force
– Two Piece Trunnion
Mounted Ball Valve
Document Number:
Revision:
Release Date:
EDC 514
A
05/09/2022
IOM: Installation, Operation and Maintenance Manual
27/43
Ⅵ. Periodic inspection
1.
Periodic inspection
1.1
A periodic inspection with valves mounted to pipelines is recommended at least once a year.
1.2
Ensure the smooth operation and safety of valves during inspection.
1.3
Inspection items and methods are same as daily inspection. See Chapter
V
for the items and
methods suggested.
1.4
Where valves and adjoining piping are not daily inspected or not operated for a long period
time, a periodic inspection is recommended. (A periodic inspection should be carried out on all
valves.)
1.5
It is particularly important to thoroughly check the valves used for the following service:
a)
Where performance failure of valves could result in a major shutdown of an entire plant unit.
b)
Where the media contain high viscosity and may get stuck to and built up inside the valves.
c)
Where corrosion and/or wear by the media is expected.
Remove the valves from the pipelines for inspection, if needed.
If disassembly of the valves is required, call the sales team at CNC Flow Control with details of
the issue to acquire instructions for inspection and repairs.
