to provide access to remove the unit and/or major
parts of equipment from the engine room and the
building through either doors/passageways or
equipment hatches. For large units, specify a
bridge crane of an adequate capacity as recommended
by the engine manufacturer.
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The installation of the equipment furnished under this section and related
pumps and gear reducers under other sections shall be coordinated and
installed in accordance with the approved installation procedures specified
and submitted per the requirements of paragraph SUBMITTALS.
3.2
PIPING INSTALLATION
No section of pipe within a building shall exceed 6 m 20 ft in length
between flanged fittings. Except where otherwise specified, flanged
fittings shall be utilized to allow for complete dismantling and removal of
each piping system from the facility without disconnecting or removing any
portion of any other system's equipment or piping. Connections to all
equipment shall be made with flexible connectors and isolation valves.
Bending of pipe shall be done with pipe benders, and no malformation shall
be visible on bent pipe. Pipes extending through the roof shall be
properly flashed. Piping shall be supported and permitted to expand and
contract without damage to joints or hangers. Drain valves of 15 mm 0.6
inch shall be installed at each low point in the piping.
3.2.1
Supports
Hangers, inserts, and supports shall be of sufficient size to accommodate
any insulation and shall conform to MSS SP-58 and MSS SP-69. Supports
shall be spaced in accordance with ASME B31.1. Piping supports shall not
be attached to metal decking. Supports shall not be attached to the
underside of concrete filled floors or concrete roof decks unless approved
by the Contracting Officer.
3.2.1.1
Ceiling and Roof
Exhaust piping shall be supported with appropriate sized Type-41 single
pipe roll and threaded rods; all other piping shall be supported with
appropriately sized Type 1 clevis and threaded rods.
3.2.1.2
Wall
Wall supports for pipe shall be made by suspending the pipe from
appropriately sized Type 33 brackets with the appropriate ceiling and roof
3.2.2
Flanges shall be Class 125 type, drilled, and of the proper size and
configuration to match the exhaust outlet of the engine. Flanged joints
shall be gasketed and made to be square and tight.
3.2.3
Cleaning
After fabrication and before assembly, all piping interiors shall manually
be wiped clean of all debris.
SECTION 15133A
Page 41
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