ASME HST-3:1999 pdf download PERFORMANCE STANDARD FOR MANUAl l Y LEVER OPERATED CHAIN HOISTS
1GENERAL
1.1 Scope
(a) This Standard establishes performance requirements for manually lever operated chain hoists usedfor lifting, pulling, and tensioning-type applications.
(b) The specifications and information contained inthis Standard apply to manually lever operated chainhoists of the following types:
(1) ratchet and pawl operation with.
(a) roller-type load chain;
(b) welded link-type load chain.
(2) friction brake operation with:
(a) roller-type load chain;
(b) welded link-type load chain.(c) Manually lever operated hoists using wire ropeas the lifting medium and specially insulated leverhoists designed for handling high voltage lines are notcovered by this Standard.
(d) This Standard is applicable to hoists manufacturedafter the date on which this Standard is issued. ThisStandard is not applicable to:
(1) damaged or malfunctioning hoists;(2) hoists that have been misused or abused;(3) hoists that have been altered without authorization of the manufacturer or a qualifed person;(4) hoists used for lifting or supporting people;(5) hoists used for marine and other applicationsas required by the Departmen of Defense (DOD)
1.2 The Appendix
Nonmandatory Appendix A，Performance Require.ments for Manually Lever Operated Chain Hoists Usedin Marine and Other Applications as Required by theU.S.Department of Defense (DOD).applies to theperformnance requirements for hoists used in marineand other applications. The requirements stated in Appendix A are in addition to the requirements of ASMEHST-3-1999 and shall be specifically invoked.
1.3 Reference Standards
The following documents form a part of this Standardto the extent specified herein. The latest issue shallapply.
ANSI Z535.4, Product Safety Signs and LabelsPublisher: National Electrical Manufacturers Association(NEMA),1300 North 17th Street, Rosslyn,VA 22209
ANSINFPA 70.National Electrical CodePublisher: National Fire protection Association (NFPA),1 Batterymarch Park，Quincy，MA 02269-9101
ASME B30.9，Slings
ASME B30.10，Hooks
ASME B30.1l，Monorails and Underhung CranesASME B30.16，Overhead Hoists (Underhung)
Publisher: The American Society of Mechanical Engi-neers (ASME International)，Three Park Avenuc.New York，NY 10016: ASME Order Deptartment:22 Law Drive，Box 2300，Fairfield，NJ 07007-2300
1.4 Definitions
abnormal operating corditions: environmental condi-tions that are unfavorable. harmful, or detrimental toor for the operation of a hoist, such as excessivelyhigh or low ambient temperature, exposure to weathercorrosive fumes, dust laden or moisture laden atmospheres, and hazardous locations.
ambient temperature: the temperature of the atmo-sphere surrounding the hoist.
brake: a device for retarding and stopping motion ofthe load (sec load controlling mechanism)
hazardous (classified) locarions: locations where fireor explosion hazards may exist. Locations are classifiedaccording to the properties of the flammable vaporsliquids, or gases, or combustible dust or fbers thatmay be present, and the likelihood that a flammableor combustible concentration or quantity is presentRefer to ANSI/NFPA 70,latest issue.
ASME HST-3:1999 pdf download
PS:Thank you for your support!
