ASME B20.1-2012 pdf – Safety Standard for Conveyors and Related Equipment.
(a) an assembly that supports another unit in either a ftxed or adjustable position and that provides mobility
(b) a wheeled vehick that can be detached from a conveying medium (usually chain) and pushed by hand
an elevated passageway for persons above the surrounding floor or ground level, including catwalks, lootwalks, runways, and elevated walkways.
workstation: a physical location whcr a person is normalh positioned, which is located by design and sup ported with facilities necessary oc a person to perform prescribed work duties. This position would not apply to maintenance location.
5.1 ApplicatIon
Conveyor equipment shall be used to convey only the specified commodities or materials within the rated capacity and the rated speed. Where special use is not indicated, or ratings are not available, gs industry practice shall be used.
5.2 Maintenance (Repair)
(a) Maintenance and service shall be performed by qualified and trained personnel.
(1’) Where lack of maintenance and service would cause a hazardous condition, the user shall establish a maintenance program to ensure that conveyor components are maintained in a condition that does not coristitute a hazard to personnel.
(c) No maintenance or service shall he performed when a conve or is In operation except as provided in paras. 5.3 and 5.4.
(d) When a conveyor is stopped for maintenance or service, the starling devices, prime movers, or powered accessories shall be locked or tagged out in accordance with a formalized procedure designed to protect all per. sons or groups involved with the conveyor against an unexpected restart. Personnel should be alerted to the hazard of stored energy, which may exist after the power source is locked out. Refer to A?SI Z2441-1982. American National Standard for Personnel Protection — Locknut fTagout of Energy Sourves — Minimum Safety Requirements, and OSIIA Standard 29 CFR 1910147. The Control of Hazardous Energy (Lockout/Tagout).
(c) All safety devices and guards shall be replaced before starting equipment for normal operation.
5.3 LubrIcation
(a) Conveyors shall not be lubricated while in operation unless it Is impractical to shut them down for lubrication. Only trained and qualified personnel who are
IMI’OR’IANT: fl genrral sslety standards in axtion 5 form a part of. and must be used with. 11w specIfic standards In sections.
5.4 Adjustment oi Maintenance During Operation
When adjustnwnt or maintenance must he done while eqwpment is in operation, only trained and qualified personnel who are aware of the hazard of the conveor in motion shall be allowed to make adjustment or perform the maintenance or service.
5.5 Backstops and Breaks
Anlirunaway, brake, or backstop devices shall he provided on all incline, decline, or vertical cnnveyors, where the effect of gravity will allow uncontrolled lowering of the load and where this load will cause a hazard to personneF
5.6 Overload Protection
Where overload conditions would cause damage to equipment that could result in a personal injury, overload devices or suitable warning means shall be provided.
5.7 Gates and Switches
(a) Power-positioned gate and switch sections shall be provided with devices that will prevent these sections from falling in case of power failure.
(1’) Means shall be provided on all gate and switch sections to prevent conveyed material from discharging into the open area, created by kiting of the gate or switck
5.8 CounterweIghts
When counterweights are supported by belts, cables, chains, and similar means, weights shall be confined in an enclosure to prevent the presence of personnel beneath the counterweight. As an alternative, th arrangement shall provide a means to restrain the falling weight in case of failure of the normal counterweight support.
5.9 Guards and Guarding
5.9.1 General Requirements of Guarding GuardIng. Where necessary for the proteclion of personnel from hazards, all exposed moving machinery parts that present a hazard to personnel at workstations or operators’ stations shall be mechanically or electrically guarded or guarded by location or posdkn.