OO-D-2855
which have been collected or recovered from solid waste and reprocessed to
become a source of raw materials, as opposed to virgin raw materials. None of
the above shall be interpreted to mean that the use of used or rebuilt products
is allowed under this specification unless otherwise specified.
3.5 Interchangeability. All units of the same classification furnished with
similar options under a specific contract shall be identical to the extent
necessary to insure interchangeability of component parts, assemblies,
accessories, and spare parts.
3.6 Safety. All rotating or reciprocating parts, excluding the drill steel,
feed chain, and crawler assembly, that are hazardous to operating personnel
shall be enclosed or guarded to comply with current DoL OSHA requirements which
apply. A weather-resistant caution sign shall be placed at the operator's
station, and shall read: "CAUTION - EYE AND EAR PROTECTION IS REQUIRED WHILE IN
OPERATION." The word "CAUTION" shall be in 3/4-inch (19 millimeter (mm)) or
larger letters. The remainder of the sign shall be in letters of not less than
1/2 inch (13 mm). Color of the lettering shall conform to OSHA standards.
3.7 Ease of maintenance. All major assemblies and installed attachments
shall be readily accessible for servicing, repair or replacement. Drainage of
lubricants and hydraulic fluid shall be to the ground or in a container without
draining on or over any part of the rock drill. When drain outlets are located
over parts of the rock drill, internal tubes or pipes shall convey the fluid
from the drain to the ground or in a container. Drain outlets shall be
accessible without the removal or adjustment of accessories or parts other than
access opening covers.
3.8 Performance. The rock drill, employing a tungsten carbide button type
bit, shall be capable of drilling a 2-1/2 to 3-1/2-inch (64 to 89 mm) diameter
hole, 12 inches (305 mm) deep in one-half minute at maximum down pressure,
rotation speed and impact frequency when operating in Barre granite or equal
with a crushing strength of 17,000 pound-force per square inch (psi)
(117 211 kilopascal (kPa)). When crushing strength of the granite is other than
17,000 psi (117 211 kPa), the penetration required shall be inversely
proportional to the penetration required at a crushing strength of 17,000 psi
(117 211 kPa). The rock drill shall be capable of drilling 30-foot (9.1 meter
(m)) deep holes in homogeneous rock with an average specific gravity of not less
than 2.6, with the boom and mast at various angles and positions, for 50 hours
of throttle time without replacement of parts other than drill steel and bits.
The rock drill shall be capable of operating on 35 percent side slopes or 50
percent longitudinal slopes, or any combination thereof, without either track
losing all contact with the ground. Boom and mast geometry shall produce a
straight line vertical pattern of 22 feet 7 inches (6883 mm).
3.9 Transportability.
The rock drill shall withstand impact forces
encountered in rail transport and semitrailer transport without damage or
permanent deformation.
3.10 Chassis. The rock drill shall be mounted on a self-propelled chassis
consisting of two oscillating track assemblies. The chassis shall have a ground
clearance of not less than 8 inches (203 mm). The track mountings shall permit
tracks to rise over obstructions while maintaining a proportionately level
platform when traveling or drilling. Total oscillation of the track frame shall
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business