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 MECHANICAL
Piping -
Chilled/Hot Water System - from the first valve off the heat exchanger or chiller
to the destination inside the facility
Compressed Air - from the first valve off of the compressor to the destination
inside the facility
Natural Gas - from the first valve on the facility side of the facility water meter to
the destination inside the facility
Sewage - from 5 feet outside the facility to the source inside the facility
Steam - from the first valve on the facility side of the pressure reducing station
closest to the facility, to the destination inside the facility
Water - from the first valve on the facility side of the facility water meter to the
destination inside the facility
Plumbing - all fixtures and exposed pipe related to the distribution and use of water in a
facility
Sanitary Sewage Utility System - the sewage lines from the facilities to the sewage treat-
ment plant
Steam Utility System - the steam distribution system piping from the steam plant to the
point where the steam enters the facility
Unfired Pressure Vessels - includes all closed vessels in which internal pressure is above
atmospheric pressure and the pressure is obtained from an external source except (a)
cylinders for shipment of compressed or liquified gasses; (b) air tanks for brakes on
vehicle; (c) unfired pressure vessels having a volume of 5 cubic feet or less; (d) unfired
pressure vessels designed for a working pressure not exceeding 15 pounds per square
inch gage; (e) unfired pressure vessels containing only water under pressure for domes-
tic supply purposes, including those containing air, the compression of which serves only
as a cushion; (f) unfired pressure vessels used as refrigerant receivers for refrigerating
and air conditioning equipment; (g) expansion or accumulator tanks used in conjunction
with high temperature water installations
Water heaters - devices that heat water for domestic purposes (including converters and
storage tanks when used for domestic hot water)
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