ASME B30.21:1999 pdf download Manually Lever Operated Hoists
SECTION I: SCOPE OF B30 STANDARD
This Standard applies to the construction, installationoperation, inspection, maintenance, and safe use of lifting equipment used in construction and industrial set-tings. This includes, but is not limited to: articulatingboom, container, gantry, mobile, pedestal, portal, towerand stacker cranes; balance-lifting units; below-the-hooklifting devices;cableways; derricks; jacks; hoists; hooks;oads suspended from rotorcraft; material placementsystems; monorails; rigging hardware; and scrap andmaterial handlers.
This Standard does not apply to track and automotivejacks, railway or automobile wrecking cranes, shipboardcranes, shipboard cargo-handling equipment,well-drilling derricks, skip hoists, mine hoists, truckbody hoists, car or barge pullers, conveyors, excavatingequipment, or equipment falling within the scope of thefollowing Committees: A10,A17，A90,A92,A120, B20B56,and B77.
SECTION II: PURPOSE
This Standard is designed to
(a) guard against and minimize injury to workersand otherwise provide for the protection of life, limband property by prescribing safety requirements
(b) provide direction to owners, employers, supervi-sors, and others concerned with, or responsible for, itsapplication
(c) guide governments and other regulatory bodiesin the development, promulgation, and enforcement ofappropriate safety directives
SECTION II: INTERPRETATIONS
Upon request, the B30 Committee will render an interpretation of any requirement of the StandardInterpretations can only be rendered in response to awritten request sent to the Secretary of the B30 Committee，ASME,Three Park Avenue, New York,NY 100165990.
The request for interpretation should be clear andunambiguous.It is further recommended that theinquirer submit his request utilizing the followingformat
Subject:
Edition:
Question:
Cite the applicable paragraph number(s)and provide a concise description.
Cite the applicable edition of the pertinentvolume for which the interpretation is beingrequested.
Phrase the question as a request for an interpretation of a specific requirement suitablefor general understanding and use, not asa request for approval of a proprietarydesign or situation. The inquirer may alsoinclude any plans or drawings that are necessary to explain the question; howeverthev should not contain any proprietarynames or information
Requests that are not in this format will be rewrittenin this format by the Committee prior to being answeredwhich could change the intent of the original request.ASME procedures provide for reconsideration of anyinterpretation when or if additional information thatmight affect an interpretation is available. Further, per.sons aggrieved by an interpretation may appeal to thecognizant ASME Committee or Subcommittee. ASMEdoes not “approve,””certify” “rate,” or “endorse”anyitem, construction, proprietary device, or activity.
SECTION IV: NEW AND EXISTING INSTALLATIONS
(a) Effective Date. The effective date of this volume forthe purpose of defining new and existing installationsshall be 1 year after its date of issuance.
(b) New Installations.Construction.installationinspection,testing,maintenance,and operation ofequipment manufactured and facilities constructed afterthe effective date of this olume shall conform to themandatory requirements of this volume.
ASME B30.21:1999 pdf download
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