ASME B30.11 pdf download

ASME B30.11 pdf download.Monorails and Underhung Cranes.
Within the general scope defined in Section I of the introduction, ASME B30.1 1 applies to underhung cranes and monorail systems where load-carrying members, such as end trucks or carriers (trolleys), travel either on the external or internal (see Fig. 9) lower flange of a runway track section, single monorail track, crane bridge girder, or jib boom (see Fig. 1), including all curves, switches, transfer devices, lift and drop sections, and associated equipment. This Volume includes provisions of both power-driven and hand-operated equipment on which the carriers are independently controlled. This equipment is grouped together because of the similarity of construction and because of common considerations which are peculiar to this type of equipment. Systems used for transporting personnel require special considerations and are not included in this Volume. Also excluded from this Volume are conveyor systems, including power and free conveyors.
SECTION 11-0.2 DEFINITIONS
abnormal operating conditions: environmental conditions that are unfavorable, harmful, or detrimental to or for the operation of the crane or carrier, such as excessively high or low ambient temperatures, exposure to weather, corrosive fumes, dust- or moisture-laden atmospheres, and hazardous locations.
admuiist rat it’e or regulatory authority: governmental agency or the employer in the absence of governmental jurisdiction.
appeiizled: appointed by a duly constituted administrative or regulatory authority.
brake: a device, other than a motor, used for retarding or stopping motion by friction or power means.
bridge (crane) girder: crane member on which carriers travel, horizontally mounted between and supported by the end trucks.
bridge (crane) travel: crane movement in a direction parallel to the crane runway.
11-1.4.2 Track Openers
Stops shall be provided to prevent a crane from running off either of the open ends of the track when the movable section is not in alignment with the track.
11-1.4.3 Interlocks
(a) Interlocking mechanisms for transfer and interlocking cranes shall maintain alignment of the bridge girder(s) with spur tracks, fixed transfer sections, or bridge girder(s) of interlocking cranes operating on adjacent runways to permit the transfer of a carrier from one to the other.
(b) Stops shall be an integral part of the interlock mechanism. When bridge girders and spur tracks or fixed transfer sections are aligned and interlock mechanisms are engaged, stops shall he in the open position to permit transfer of a carrier from one to the other. When bridge girders and spur tracks or fixed transfer sections are not aligned, or interlock mechanisms are disengaged, stops shall be in the closed position and shall prevent carriers from rolling off the end of spur tracks, transfer sections, or bridge girders.
SEC11ON 11-1.5 VERTiCAL DROP OR LIFT SECTIONS
11-1.5.1 Carrier Passage
Vertical drop or lift sections shall maintain alignment of the fixed tracks and the movable tracks to enable the passage of a carrier.
11-1.5.2 Carder Run Off Protection
Means shall be provided to prevent a carrier from running off either end of the movable track when the movable track is not in alignment with the fixed tracks.
11-1.5.3 Stops
Stops shall prevent a carrier from running off the open ends of the fixed tracks when the movable track is not in alignment with the fixed tracks.
11-1.5.4 Baffles
Electric baffles shall be provided on fixed and movable tracks on systems with cab-operated carriers, automatic dispatch carriers, or molten material carriers. They shall limit carrier travel when the movable track is not in alignment with the fixed track. They shall also prevent the load from contacting another load on the movable track.
11-1.6.6 Lighting
Cab lighting, either natural or artificial, shall provide a level of illumination that enables the operator to observe the operating controls.
11-1.6.7 Egress
There should be means of egress from cab-operated cranes or carriers to permit departure under emergency conditions. The means of egress should depend upon the facts of the situation.
SECTION 11-1.7 GUARDS AND LUGS
1-1.7.1 Guards for Moving Parts
(a) Exposed moving parts, such as gears, set screws, projecting keys, chains, chain sprockets, and reciprocating components that constitute a hazard under normal operating conditions, shall be guarded.
(fr) Each guard shall be capable of supporting 200 lb (90 kg), without permanent delormation, unless the guard is located where it is not probable for a person to step on it.