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Encase in protective [cast-iron] [Schedule 40 PVC] pipe. [For oxygen
piping, provide Factory Mutual (FM) listed heat trace, set for 27 degrees C
80 degrees F maximum, terminated at a junction box with terminal board, and
mounted near the main oxygen supply shut-off valve just inside the
building. Label the junction box "Underground Oxygen Piping Heat Trace."
Do not permanently wire heat trace to electrical power. Provide buried
lines with 25 mm one inch ASTM C 552 cellular glass and integral moisture
barriers.]
2.1.3.13
Buried Pipe Warning and Identification Tape
Provide detectable aluminum foil plastic backed tape or detectable magnetic
plastic tape manufactured for warning and identification of buried piping.
Tape shall be detectable by an electronic detection instrument. Provide
tape in rolls, 80 mm 3 inches minimum width, color coded for the service
involved with warning and identification imprinted in bold black letters
continuously and repeatedly over entire tape length. Use "CAUTION
(intended service) LINE BURIED BELOW" or similar wording. Use permanent
code and letter coloring unaffected by moisture and other substances
contained in trench backfill material.
2.1.3.14
Piping Identification
FS A-A-1689, pressure sensitive adhesive tape and decals.
Colors and
labels must conform to ANSI A13.1.
2.1.3.15
Nitrogen
For cleaning, purging, and testing, use oil-free dry nitrogen as specified
in paragraph entitled "Test Gases."
2.1.3.16
Equipment Foundations
Section 15070N MECHANICAL SOUND VIBRATION AND SEISMIC CONTROL, and as
recommended by the equipment manufacturer.
2.1.4
Station Outlets and Vacuum Terminals (Inlets)
Sized and made for pressures and other design conditions, as indicated.
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NOTE: For ceiling hose drops and nitrogen systems,
use only Diameter-Index Safety System (DISS)
connectors. Commercial connectors may be used for
other systems.
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2.1.4.1
Connectors
Permanently label and color code female connectors and include the warning
"DO NOT USE OIL." Permanently label and color code male connectors.
Provide labels with cast-in or engraved letters.
a.
Diameter-Index Safety System (DISS) Connectors: CGA V-5 brass
connections with color code, automatic valve, and secondary check
valve. Provide each outlet connector with a positive acting metal
or plastic cap secured with chain to the faceplate.
SECTION 15217N
Page 16
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