full length of fire tubes shall be provided.
2.14
FACTORY COATING
Equipment and component items, when fabricated from ferrous metal, shall be
factory finished with the manufacturer's standard finish unless otherwise
specified.
PART 3
EXECUTION
3.1
INSTALLATION, EXCEPT FUEL SYSTEM
Work shall be installed as indicated and in accordance with manufacturer's
diagrams and recommendations and applicable requirements of FM and NFPA.
3.1.1
Piping
a.
Unless otherwise specified, pipe and fittings shall conform to
requirements of ASME B31.1. Pipe shall be cut to measurements
established at the jobsite and worked into place without springing
or forcing, completely clearing windows, doors, and other openings.
b.
Pipes shall be minimum 2.4 m 8 feet above walkway elevations.
c.
Cutting or other weakening of the building structure to facilitate
piping installation will not be permitted without written approval.
d.
Pipes shall have burrs removed by reaming and shall be so
installed as to permit free expansion and contraction without
causing damage to building structure, pipe, joints, or hangers.
Filings, dust, or dirt shall be wiped from interior of pipe or
tubing before connections are made.
e.
Changes in direction shall be made with fittings, except that
bending of pipe 100 mm 4 inches and smaller will be permitted,
provided a pipe bender is used and wide sweep bends are formed.
Centerline radius of bends shall not be less than 6 diameters of
pipe. Bent pipe showing kinks, wrinkles, flattening, or other
malformations will not be accepted. Vent pipes shall be carried
through the roof as directed and shall be flashed.
f.
Unless otherwise indicated, horizontal supply mains shall pitch
down in direction of flow with a grade of not less than 25 mm in
12 meters 1 inch in 40 feet.
g.
Open ends of pipelines and equipment shall be capped or plugged
during installation to keep dirt or other foreign materials out of
the system.
h.
Pipe not otherwise specified shall be uncoated.
Unions for copper
pipe or tubing shall be brass or bronze.
i.
Connections between ferrous piping and copper piping shall be
electrically isolated from each other with dielectric couplings or
other approved methods.
j.
Pipe and fittings shall be of the types indicated in TABLES I and
II for the applicable service and pressure
SECTION 15561A
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