Nev. Admin. Code § 554.460 - Duct systems in railway cars or vans
1. The intake side
of the blower unit must be connected to the inside duct system by a 15-foot
length of 6-inch flexible tubing coated with neoprene. Another 15-foot length
of 8-inch tubing must be attached to the exhaust side of the blower and the
other end inserted into a metal collar inserted into the paper grain door above
the load.
2. The inside probe and
duct system must be constructed of flexible tubing coated with neoprene. Two
similar systems must extend from the center to each end of the car or van and
must be connected by a Y-section to a 5-foot section of 6-inch tubing which
extends toward the door. The end of this section must be fitted with a sheet
metal tubing that is 6 inches in diameter and extends through the paper grain
door and connects to the intake side of the blower.
3. A set of ten probes which are 6 feet long
are required. Probes must be made from 1 1/4-inch I.D. hard-drawn aluminum
tubing. Each probe must be fitted with a heavy sheet metal point having four
slots which are one-sixteenth of an inch wide and 5 inches long through which
air is taken into the duct system. Each probe must be attached to the duct
system by a section of 1 1/2-inch flexible tubing.
Notes
NRS 554.020, 554.030
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