MIL-HDBK-1022
b) Unless otherwise specified, provide a fine screen
mesh as follows:
Mesh
Size of Opening
Pump suctions
7
0.108 inch (2.74 mm)
(Centrifugal)
Pump suctions
40
0.016 inch (0.40 mm)
(Rotary)
Meter inlets
40
0.016 inch (0.40 mm)
c) In all cases, ensure the effective screen area is
not less than three times the cross sectional area of the
pipe.
5.8.6
Surge Suppressors. Every effort should be made to
control hydraulic surge or shock to acceptable limits by the
design of the piping system rather than by the use of surge
suppressors. Where this is not possible, or becomes extremely
impractical, a surge suppressor(s) may be incorporated. Use
the diaphragm or bladder type equipped with a top-mounted
liquid-filled pressure gauge, isolation valve, and drain.
Locate surge suppressors as close as possible to the point of
shutoff that is expected to cause the shock. Provide a check
valve at the bottom with a weep hole in the clapper.
5.8.7
Valves
5.8.7.1
Materials of Construction. Use carbon steel bodies
and bonnets for valves at marine receiving and dispensing
facilities. Do not furnish or install cast iron or bronze-
bodied valves in liquid petroleum service.
5.8.7.2
Types and Locations
a) Provide a block valve on each line at the shore
end. For piping used only for receiving fuel, also provide a
check valve at the shore end. Use double block and bleed
type, which may be motor-operated with remote control. To
minimize surge potential, use a slow-closing speed, if
possible.
103
Previous Page
