ASME B30.25 pdf download

ASME B30.25 pdf download Scrap and Material Handlers Safety Standard for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings
Volume: Cite the designation and title of the volume.
Edition: Cite the applicable edition of the volume.
Subject: Cite the applicable paragraph number(s) and the relevant heading(s).
Question: Phrase the question as a request for an inter- pretation of a specific provision suitable for general understanding and use, not as a request for approval of a proprietary design or situation. Plans or drawings that explain the question may be submitted to clarify the question. However, they should not contain any proprietary names or information. Upon receipt by the Secretary, the request will be forwarded to the relevant B30 Subcommittee for a draft response, which will then be subject to approval by the B30 Standards Committee prior to its formal issuance. Interpretations to the B30 Standard will be published in the subsequent edition of the respective volume and will be available online at http://cstools.asme.org.
SECTION X: ADDITIONAL GUIDANCE The equipment covered by the B30 Standard is subject to hazards that cannot be abated by mechanical means, but only by the exercise of intelligence, care, and com- mon sense. It is therefore essential to have personnel involved in the use and operation of equipment who are competent, careful, physically and mentally qualified, and trained in the proper operation of the equip- mentand the handling ofloads. Serious hazards include, but are not limited to, improper or inadequate mainte- nance, overloading, dropping or slipping of the load, obstructingthe free passageofthe load, and usingequip- ment for a purpose for which it was not intended or designed.
The B30 Standards Committee fully realizes the importance of proper design factors, minimum or maximum dimensions, and other limiting criteria of wire rope or chain and their fastenings, sheaves, sprockets,drums, and similar equipment covered by the standard, all of which are closely connected with safety. Sizes, strengths, and similar criteria are dependent on many different factors, often varying with the installation and uses. These factors depend on
(a) the condition of the equipment or material
(b) the loads
(c) the acceleration or speed of the ropes, chains, sheaves, sprockets, or drums ix
(d) the type of attachments
(e) the number, size, and arrangement of sheaves or other parts
(f) environmental conditions causing corrosion or wear
(g) many variables that must be considered in each individual case The requirements and recommendations provided in the volumes must be interpreted accordingly, and judg- ment used in determining their application.
SECTION 25-0.1: SCOPE OF B30.25 Volume B30.25 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of scrap and material handlers consisting of a base, a revolving upper structure with operator’s station(s), and a front for lifting scrap or materials using attachments such as magnets and grapples, and any variations thereof in which the equipment retains the same fundamental characteristics.
The provisions included in this volume apply to scrap and material handlers that are crawler mounted, rail mounted, wheel mounted, or on pedestal bases. The scope includes hydraulically operated scrap and material handlers powered by internal combustion engines or electric motors to lift, lower, and swing scrap and material at various radii. Hydraulic excavators designed for digging and trenching, forestry machines, machines designed for demolition, lattice and telescopic boom cranes, rail- mounted cranes for railway and automobile wreck clear- ance, and equipment covered by other volumes of this Standard are excluded.
SECTION 25-0.2: DEFINITIONS 25-0.2.1 Types of Scrap and Material Handlers A scrap and material handler is herein after referred to as a “handler.” Handlers may be mounted on one of the following bases: crawler handler: mounted on a base, equipped with crawler tracks for travel (see Fig. 1). pedestal-mounted handler: mounted on a pedestal base (see Fig. 2).
rail-mounted handler: mounted on a base, equipped for travel on a railroad track (see Fig. 3).
wheel-mounted handler (multiple control stations): mounted on a base, equipped with axles and rubber-tired wheels for travel, a power source(s), and havingseparate control stations for driving and operating (see Fig. 4).