ASME HST-5:1999 pdf download PERFORMANCE STANDARD FOR AIR CHAIN HOISTS
1 GENERAL
1.1 Scope
(a) This Standard establishes performance requirements for air powered chain hoists for vertical liftingservice involving material handling of freely suspended(unguided) loads using load chain of the roller orwelded link types with one of the following types ofsuspension:
(1) lug;
(2) hook or clevis;
(3) trolley.
(b) This Standard is applicable to hoists manufacturedafter the date on which this Standard is issued. It isnot 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 qualified person;
(4) hoists used for lifting or supporting people;(5) hoists used for the purpose of drawing boththe load and the hoist up or down the hoist’s ownload chain(s): or
(6) hoists used for marine and other applicationsas required by the Department of Defense (DOD).
1.2 The Appendix
Nonmandatory Appendix A，Performance Requirements for Air Chain Hoists Used in Marine and OtherApplications as Required by the U.S. Department oDefense(DOD)，applies to the performance requirements for hoists used in marine and other applicationsThe requirements stated in Appendix A are in additionto the requirements of ASME HST-5-1999 and shallbe specifically invoked.
1.3 Reference Standards
The following documents form a part of this Standardto the extent specified herein. The latest issue shallapply.
Publisher: National Electrical Manufacturers Association(NEMA),1300 North 17th Street, Rosslyn,VA 22209
ANSI/NFPA 70.National Electrical CodePublisher: National Fire Protection Association (NFPA)1 Batterymarch Park，Quincy，MA 02269-9101ASME B29.1M，Precision Power Transmission RollerChains，Attachments，and SprocketsASME B30.9，Slings
ASME B30.10.Hooks
ASME B30.11，Monorails and Underhung CranesASME B30.16.Overhead Hoists (Underhung)
ASME B30.17，Overhead and Gantry Cranes (TopRunning Bridge,Single Girder, and Underhung Hoist)Publisher: The American Society of Mechanical Engineers (ASME).Three Park Avenue，New York，NY10016-5990:Order Department: 22 Law Drive，Box2900，Fairfield，NJ 07007-2900
1.4 Definitions
abnormal operating conditions: environmental condi-tions that are unfavorable, harmful, or detrimental toor for the operation of a hoist, such as excessivelyhigh or low ambient temperatures,exposure to weather.corrosive fumes. dust laden or moisture laden atmospheres，and hazardous locations.
ambienf femperafure: the temperature of the atmosphere surrounding the hoist.
beam: an overhead standard structural or speciallyfabricated shape on which the trolley operates.
brake: a device other than a motor, used for retardingor stopping hoist or trolley motion by friction or powermeans.
Class I locations locations in which fammable gaseor vapors are or may be present in the air in quantitiessufficient to produce explosive or ignitable mixtures.
Class 2 locations:locations that are hazardous becauseof the presence of combustible dust.
Class 3 locarions: locations that are hazardous becauseof the presence of easily ignitable fibers or flyings
ASME HST-5:1999 pdf download
PS:Thank you for your support!
