As referenced in section 3001.2 of the New York City Building Code, the provisions of ASME B20.1—03 shall be modified in accordance with this chapter. The section numbers correlate to those in the referenced ASME standard. Refer to the rules of the department for any subsequent additions, modifications or deletions that may have been made to this standard in accordance with Section 28-103.19 of the Administrative Code.
Revise the text of section 1 to read as follows:
This Standard applies to the design, construction, installation, maintenance, inspection, and operation of conveyors and conveying systems in relation to hazards. The conveyors may be of the bulk material, package, or unit handling types where the installation is designed for permanent, temporary, or portable operation.
This standard shall apply, with the exceptions noted below, to all conveyor installations.
This standard specifically excludes any conveyor designed for, installed for, or used [primarily] for the movement of human beings. This standard does, however, apply to certain conveying devices that incorporate within their supporting structure, work stations or operator's stations specifically designed for authorized personnel.
This standard does not apply to conveyors such as underground mine conveyors for which specific standards are already in effect, or to equipment such as industrial trucks, tractors, trailers, automatic guided vehicles, tiering machines (except pallet load tierers), cranes, hoists, power shovels, power scoops, bucket drag lines, trenchers, platform elevators designed to carry passengers or operator, manlifts, moving walks, moving stairways (escalators), highway or railroad vehicles, cable ways, tramways, dumbwaiters, pneumatic conveyors, robots or integral machine transfer devices. Some of the foregoing have specific standards.
The provisions of this Standard shall apply to equipment installed one year after the standard's date of issuance.
Revise the definition Vertical Reciprocating Conveyor in section 4 to read as follows:
Conveyor, vertical reciprocating: a permanent reciprocating power or gravity actuated unit (not designed to carry passengers or an operator) that receives objects on a carrier and transmits these objects vertically between two or more levels.
6 SPECIFIC SAFETY STANDARDS
6.21 Vertical Reciprocating Conveyors.
6.21.1 Add new sub-sections d, e, f, g, h, i, j and k to section 6.21.1 to read as follows:
6.21.1 Safety Considerations
(d) Travel distance shall be limited to less than 22 860 mm (75 ft.) with a maximum of four (4) landings served.
(e) Conveyor(s) shall be enclosed in a two- (2) hour fire rated hoistway, equipped with a minimum 11/2 hour fire rated entrance at each landing served.
(f) Access at landings shall be a restricted area for authorized personnel with no public access.
(g) Where there is an occupied space or an unoccupied space not secured against unauthorized access under the hoistway, the conveyor shall be equipped with a safety designed to stop and hold the conveyor with the rated full load capacity independent of the hoisting or driving mechanism.
(h) The operating device shall not be located inside the conveyor enclosure and must be external to the hoistway at each landing served.
(i) The system shall incorporate a position indicator at each floor landing to register the location of the conveyor.
(j) The rated load capacity shall not be less than 239 kg/m2 (49 lbs. per sq. ft.) with a maximum capacity of 9072 kg (20,000 lbs.).
(k) The rated speed shall not exceed 406 mm/sec. (80 FPM).
(l) VRCs are permitted only in commercial and industrial occupancies.
6.21.2 Revise sub-sections (c) and (d) of 6.21.2 to read as follows:
(c) Vertical reciprocating conveyors designed to automatically receive and discharge material [may] shall have interlocked doors as in (b) above or, as an alternative, may be guarded by a suitable enclosure extending from the path of the moving carrier.
(d) Where the application requires that personnel walk onto the carrier to load or unload material, the carriers shall be provided with a conveyor enclosure securely fastened to the conveyor platform. The enclosure walls shall be of solid, grille or perforated construction; and shall be of such strength and support that when subjected to a leaning or falling rated load on the conveyor, the enclosure walls will not deflect or deform in a way that reduces running clearances to less than 13mm (0.5 in.). Enclosure entrance(s) shall be provided with solid doors or gates; and shall guard the full width opening with a minimum height of 2030mm (80 in.). Grille or perforated portions of conveyor enclosures and entrance gates shall reject a ball 38mm (1.5 in.) in diameter. [with standard railings, snap chains, or equivalent across the loading/unloading side(s). Snap chains shall be at least 39 in. at their lowest point.]