ASME B15.1:2000 pdf download

ASME B15.1:2000 pdf download SAFETY STANDARD FOR MECHANICAL POWER’ TRANSMSSION APPARATUS
1 SCOPE, PURPOSE, APPLICATION, AND EFFECTIVE DATE
1.1 Scope The requirements of this Standard apply to any source of hazard to people from the operation of mechanical power transmission apparatus on machines, equipment, or systems that are stationary in their use, other than the point of operation. This Standard applies to the sources of mechanicai power, and also to pulleys, gears, and other mechanical components used to transmit power to the point of operation. Where other standards take precedence by specific reference to power uransmis- sion apparatus, this B15.1 Standard shall not apply.
1.2 Purpose The purpose of this Standard is to provide require- ments for USC in devcloping effective safcguarding methods to protect people from injury duc to inadvertent contact with mechanical power transmission apparatus. When specific safeguarding methods are listed, they are based on sound safety practices; however, altema- tives that provide equivalent protection are acceptable. The se of persona! protective equipment is recom- mended, where applicable, but its use does not negate provisions of this Standard.
1.3 Application – General Requirements People having access to areas where motion hazards exist shall be protected, by safeguarding means, from contact with moving parts (mechanisms). Such safeguarding means shall prevent people from walking into, reaching over or under, or other inadvertent contacts. Where breakage of a machine component can result n injury， provision shall be made for appropriate containmcnt of said components. When mcchanical power transmission apparatus is stopped for servicing purposes, the starting devices, prime movers, or powered acessories shall be locked or tagged out, in accordance with a generalized procedure，to protect a!! persons or ‘groups exposed to the mechanical power transmission apparatus from an unexpected start.
1.3.1 Exception – Low Energy. Certain power transmission apparatus may lack sufficient energy to create a hazard, and therefore safeguarding may not be required.
1.3.2 Exceptions 一Service/Maintenance. When a safeguard must be bypassed during startup. selup, repair, adjustment, or maintenance, a program o control the unexpected energization of mechanical power ransmission apparaius shall be impiemenied. This program shall be in writing and shall include propcr procedures and adequate training of personnel. , During tcsting and positioning of mcchanical power transmission apparatus, special procedures shall be im- plemented and only properly trained and authorized personne! shall be allowed access to a hazard area.
1.4Effective Date
The effective date of this Standard for the applicableequipment cited in it shall be l year after its date ofissuance.
DEFINITiONS
belt:a continuous band or series of links of beltingmateriai for transferring motion or power from onewheel，puiley, or shaft to another.
chain:a series of links joined together to form amedium for iransmitting motion or power from onesprocket or whecl to another.
gear: a toothed machinc clcmcnt uscd to transmitmotion without the use of a belt or chain.
iradvertent contact:when a person touches or other-wise contacts mechanical power transmission apparatusaccidentally.
mechanical power transmission apparatus: the me-chanical components that.together with a source ofpower. provide the motion to an element of a machineor equipment.
mobile:capable of moving or being moved readilyfrom one piace io anothner.
motion hazards: hazards created by movement of com-poncnts of power transmission apparatus cithcr bythemselves or in relation to other components or fixedstructures.
rip point:a point at which a machine element movingin line meets a rotating element in such a manner thatit is possible to nip. pinch, squeeze, or entrap a personor objects coming into contact with one of the twomembers. “This definition holds for the similar pointwith respect to two rotating narts or two convergingparts in linear movement.
pinch point:any location at which it is possible fora part of the body to be caught between the movingmechanical power transmission apparatus componentsand parts of the machine or auxiliary equipment. It isa location where insertion can cause a pinch or squeezeaction to the body part.