ASME HST-3-2017 pdf – Performance Standard for Lever Hoists
ASME HST-3-2017 pdf – Performance Standard for Lever Hoists.
SECTION 3-2.1 LOAD TESTING
(a) Load Testing of New Hoists. All complete new hoists shall be tested by the manufacturer with a test load of at least 125% of rated load, except hoists incorporating overload devices, in which case the hoist shall be tested with at least rated load. In addition, all operating functions shall be checked to ensure proper operation.
(b) Load Testing of Altered Hoists. All hoists in which load sustaining parts have been altered, replaced, or repaired shall be tested statically or dynamically by or under the direction of an appointed person, and a record of the test should be made. The applied test load shall be at least equal to the rated load or greater, as approved by the manufacturer. The replacement of the lifting medium is specifically excluded from this hoist load test; however, a functional test of the hoist should be made prior to putting the hoist back in service.
SECTION 3-2.2 MANUAL
The manufacturer shaLl furnish with each hoist one copy of an instruction manual. The manual shall include information on the following:
(b) inspection and testing
(c) lubrication, maintenance, and repair
SECTION 3-2.3 OPERATION
Operating procedures recommended in the manufacturer’s instruction manual should be followed. In addition to these recommendations, operating practices (para. 3- 2.3.2) and load handling procedures (para. 3-2.3.3) should be followed.
3-2.3.2 Operating Practices
It is recommended that the following practices be adhered to when using a lever-operated hoist:
(a) The supporting structure or anchoring means shall have a load rating at least equal to that of the hoist.
(b) The operator shall familiarize himself with the operation of the equipment and its proper care. If adjustments are necessary or any damage is known or suspected, the hoist shall be removed from service and not used until corrections are made.
(c) Hoists shall be used only in locations that will allow the operator to be free of the load.
(d) The operator shall ensure that he has firm footing and is otherwise secured before operating the hoist.
(e) The operator shall have access to the operating lever.
(1) Before using the hoist, the operator shall be certain that all people in the area are clear of the load.
(g) The operator shall not engage in any activity that will divert his attention while operating the hoist.
(Ii) The operator shall not attempt to use the freewheeling feature with any load on hoist. Load shall not be applied with the hoist control in the free-wheeling mode.
(I) Hoists shall not be operated by means other than hand power nor operated with an extension on the lever.
3-2.3.3 HandLing the Load
(a) The rated load shall not be exceeded.
(b) The hoist lifting medium shall not be wrapped around the load.
(c) The load shall be attached to the hook or attached by means of slings or other approved devices.
(d) The load slings or other approved devices shall be seated properly in the saddle of the hook, and the hook latch (if used) shall be closed before operating the hoist. Hooks shall not be tip loaded.
(e) Before lifting or pulling a load, the operator shall be certain that
(1) the lifting medium is not kinked, twisted, or fouled, and is properly seated in the sprocket(s) or drum(s)
(2) load is not caught on any obstructions
(3) multiple-strand parts are not twisted and are free to take up Load with the load equalized on each supporting strand
(4) clearance is available to avoid personal injury or property damage
A-1 GENERALA-1.1 Scope
This Appendix provides performance requirementsbeyond those cited in ASME HST-3 for manually lever-operated chain hoists for use in marine and other applica-tions as required by the Department of Defense (DOD).This Appendix, in conjunction with ASME HST-3, is repla-cing the requirements of MIL-H-904 for manually lever-operated chain hoists.