Piping at Pumps

DOE-HDBK-1132-99

Review the location of steam relief valve vent stacks to ensure that the

condensing vapor does not cause ice to form on nearby equipment,

walkways, or roads.

Consider local area frost penetration when designing underground piping.

Piping at Pumps . Piping configurations at pumps require special considerations

1.3.6

to ensure the safe and effective operation of the pump.

Proper piping layout permits both the suction and the discharge pipes to

be supported independently of the pump so that little load is transmitted

to the pump casing.

Reductions in pipe size at the pump should be made with an eccentric

reducer flat side up.

Startup strainers necessary near pumps should have adequate space for

installation.

1.3.7

Expansion Joints . Metallic or rubber bellows-type expansion joints should be

used in the design of piping systems in the following instances:

to absorb the thermally induced dimensional changes in the piping

system;

to minimize the stresses and moments in the system;

to minimize the loads imposed on equipment nozzles;

to reduce the recurring problem of rotating equipment misalignment due

to nozzle loads, particularly at pumps;

where space is inadequate for a conventional flexible piping arrangement;

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