ASME B30.17-2020 pdf download
ASME B30.17-2020 pdf download.Cranes and Monorails (With Underhung Trolley or Bridge).
Automatic cranes or trolleys shall be so designed that operation of all motions shall be discontinued if the automatic sequence control becomes ineffective. Comple- tion ofthe last command is permissible ifpower is avail- able. (2) Remote-operated cranes or trolleys shall func- tion so that if the control signal for any crane or trolley motion becomes ineffective, that crane or trolley motion shall stop. Conversely, signals received from any source other than the operating station shall not result in operation of any motion of the crane or trolley. (e) The arrangement of pendant push-button stations and radio-controlled transmitters should conform to Figures 17-1.14.3-3 and 17-1.14.3-4, respectively. Compass directions may be substituted for “Right–Left” and “Forward–Reverse” in Figure 17-1.14.3-3, and for the W, X, Y, and Z designations in Figure 17-1.14.3-4. (f) Systems using radio controls shall be provided in accordance with ANSI ECMA 15. (g) A minimum of two collectors for each runway conductor shall be furnished when the crane uses inver- ters. (h) Push buttons of pendant stations shall be guarded or shrouded to prevent accidental actuation of crane motion. (i) Overspeedprotectionshallbeprovidedwheninver- ters (variable frequency drives) are used. Dynamic brakingresistors maybe considered as overspeed protec- tion for traversing drives. 17-1.14.4 Resistors (When Provided) (a) Resistor units shall be supported to minimize the effect of vibration. (b) Provisionsshallbemadeto preventbrokenparts or molten metal from falling upon the operator or from the crane or trolley. (c) If resistor enclosures are provided, the enclosures shall be installed to limit exposure to combustible mate- rials.
(a) All inspections shall be performed by a designated personinaccordance withthe manufacturer’s recommen- dations and with the requirements of this Volume. Any deficiencies identified shall be examined and a determi- nation made by a qualified person as to whether they constitute a hazard and whether disassembly or a more detailed inspection is required. Any condition disclosed by these inspections that is determined to be a hazard to continued operation shall be corrected before continuing the use of the equipment. (b) There are five types of inspections required, each directed toward a differentsetofcircumstances. Theyare the following: (1) initial inspection (2) functional test inspection (3) frequent inspection (4) periodic inspection (5) inspection of equipment not in regular use (c) Inaddition,theinspectionandtestingshallbebased on the recommendations in the equipment manufac- turer’s manual and, when appropriate, recommendations bya qualified person based upon reviewofthe equipment application and operation. 17-2.1.2 Initial Inspection (a) An initial inspection is a visual and audible exam- ination of the equipment. (b) New, reinstalled, altered, repaired, and modified equipment as defined in the scope of this Volume shall be inspected prior to initial use to verify compliance with applicable provisions ofChapter17-1 ofthis Volume. (c) New, reinstalled, altered, repaired, and modified track sections and their support systems for monorail systems, runways and their support systems for under- hung cranes, and runway rails for top running cranes shall be inspected prior to initial use to verify compliance with applicable provisions ofChapter17-1 ofthis Volume. (d) Inspectionofaltered, repaired, andmodifiedequip- ment may be limited to the parts of the crane, runway, monorail systems, or support system affected by the alteration,repair,ormodificationasdeterminedbyaqual- ified person. A functional test inspection is a visual and audible operational examination of the equipment, and shall be conducted at the beginning of each shift or before the equipment is first used during each shift. In special appli- cations, when the handling of a suspended load is trans- ferred from operator to operator at shift change, the functional test inspection shall be performed when that lift is completed. (b) As a minimum, the following items shall be inspected during performance of the functional test inspection: (1) operational controls (2) upper limit device(s) in accordance with ASME B30.16 (3) chain or wire rope in accordance with ASME B30.16 (c) Deficiencies discovered during this inspection shall bereportedimmediatelyto thesupervisororadesignated person. (d) Adjustments, repairs, or replacements shall be made in accordance with para. 17-4.2.4 prior to use.
