ASME B20.1-2006 pdf download.Safety Standard for Conveyors and Related Equipment.
2 REFERENCE TO OTHER CODES Certain other codes and standards have been cited as references in this Standard. Reference to them does not constitute inclusion of the complete text of such codes or standards as a part of this Standard. This Safety Standard for conveyors is supplementary to any law or code covering fire or health regulations. 3 INTENT The intent ofthis Standard is to provide for safe opera- tion and maintenance of conveying equipment. Suggestions for improvement of this Standard may be submitted to the Secretary of the B20 Committee, ASME, Three Park Avenue, New York, NY 10016-5990. Proposals should be written in accordance with the following format: (a) Specify page and paragraph designation of the pertinent Standard. (b) Indicate suggested change (addition, deletion, revision, etc.). (c) Briefly state reason and/or evidence for suggested change. (d) Separately submit suggested changes if more than one paragraph is affected. The B20 Committee will consider each suggested change at its first meeting after receipt of the suggested change(s). The B20 Committee will render an interpretation of any requirement of the Standard. Interpretations will be rendered only in response to a written request sent to the Secretary of the B20 Committee, ASME, Three Park Avenue, New York, NY 10016-5990. The request for interpretation shall be in the following format:Subject: Cite the applicable paragraph number(s) and provide a concise description. Edition: Cite the applicable edition of the standard for which the interpretation is being requested. Question: Phrase the questionas a requestforaninter- pretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation. The inquirer may also include any plans or drawings that are nec- essary to explain the question; however, they should not contain proprietary names or information. ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available. Further, per- sons aggrieved by an interpretation may appeal to the cognizant ASME committee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity. 4 DEFINITIONS 1 actuator: a device that initiates the action of controls or controllers and is manually operated. The actuator may be a push button, toggle switch, foot pedal, hand lever, hand-set timer, or any other device that performs the described function. antirunaway: a safety device to stop a declining conveyor and thus preventmovingawayinthe eventofamechani- cal or electrical failure. apron pan: one of a series of overlapping or interlocking plates or shapes that, together with others, form the conveyor bed. automatically controlled: describes the operation be the action of a mechanism that is initiated by some imper- sonal influence, such as a conveyor that is started by a low-level bin indicator. backstop: a mechanical device to prevent reversal of a loaded conveyor under action of gravity when forward travel is interrupted. bed: (a) that part of a conveyor upon which the load or carrying medium rests or slides while being conveyed
car unloader: a type of conveyor characterized by a shal- low, horizontal loading section that enables it to receive and unload material from hopper bottom cars without requiring a pit or other excavation. carrier: (a) a device attached to or hung from trolleys to sup- port the load (b) the receptacle inwhichobjects are placed fortrans- mittal through a conveying system (c) the moving partofa vertical or inclined reciprocat- ing conveyor that supports the load chain: a series of links pivotally joined together to form a medium for conveying or transmitting motion or power. General classes of chain common to conveyors are detachable, pintle, combination, roller, rivetless, coil, inverted tooth, and bar link chains. chute: a trough through which bulk materials or objects are directed and lowered by gravity. The trough may be open or enclosed, straight or curved. control: the system governing the starting, stopping, direction of motion, acceleration, speed, retardation, identification, and function of the moving member in a predetermined manner. controller: an electromechanical device or assembly of devices for starting, stopping, accelerating, or decelerat- ing a drive or serving to govern in some predetermined manner the power delivered to the drive. conveying medium: that portion of a conveyor that moves or carries materials, packages, or objects.