ASME B30 16 INTERPRETATIONS-2012 Interpretations to B30 16 - Overhead Hoists (Underhung) (Includes Interpretations through January 2012)《B30 16的说明 吊运装置(轮动)》.pdf

1、ASME B30.16 INTERPRETATIONSASME B30.16 INTERPRETATIONSReplies to Technical InquiriesJanuary 2007 through January 2012FOREWORDThis publication includes all of the written replies issued between the indicated dates by theSecretary, speaking for the ASME B30 Standards Committee, Safety Standards for Ca

2、bleways,Cranes, Derricks, Hoists, Hooks, Jacks, and Slings, to inquiries concerning interpretations oftechnical aspects of ASME B30.16, Overhead Hoists (Underhung).These replies are taken verbatim from the original letters except for a few typographicalcorrections and some minor editorial correction

3、s made for the purpose of improved clarity. Insome few instances, a review of the interpretation revealed a need for corrections of a technicalnature; in these cases, a corrected interpretation follows immediately after the original reply.These interpretations were prepared in accordance with the ac

4、credited ASME procedures.ASME procedures provide for reconsideration of these interpretations when or if additionalinformation is available that the inquirer believes might affect the interpretation. Further, personsaggrieved by this interpretation may appeal to the cognizant ASME Committee or Subco

5、mmittee.ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietarydevice, or activity.I-1ASME B30.16 INTERPRETATIONSInterpretation: 16-27Subject: ASME B30.16-2003Date Issued: January 31, 2007Question (1): Are below-the-hook lifting devices and rigging accessories co

6、nsidered part ofthe load?Reply (1): Yes, below-the-hook lifting devices and accessories are considered part of the sus-pended load and must be factored into the total load on the hoist (see definition of “load”).However, para. 16-3.1.4 allows for these devices to be left suspended from the hoist dur

7、ing periodsof nonuse as long as proper precautions are taken to avoid creating a hazard.Question (2): Does B30.16 require daily testing of lower limit devices?Reply (2): No, B30.16 does not require daily testing of lower limit devices. However, para. 16-2.2.1does require the lower limit be tested on

8、 hoists that have been significantly altered or repaired,or have been out of service for a period of 12 mo or more.Interpretation: 16-28Subject: ASME B30.16-2003, Paragraph 16-1.3.2Date Issued: June 29, 2009Question: Would an underhung electric hoist with a rated capacity of 5 ton under a monorailwi

9、th a rated capacity of 3 ton be in compliance with the Standard?Reply: If the monorail is designed for a rated load of 3 ton, the system consisting of the 3-tonrated monorail and a 5-ton rated hoist does not meet the requirements of para. 16-1.3.2.Interpretation: 16-29Subject: ASME B30.16-2003 (R200

10、7), Sections 16-2.1 and 16-2.2Date Issued: January 31, 2012Question (1): Must new hoists that have satisfied para. 16-2.1.1(a) and Section 16-2.2, and havebeen in inventory for a period of 1 mo or more, but less than 1 yr, undergo any additionalinspection or testing by the manufacturer prior to bein

11、g placed into service?Reply (1): No; however, when being placed into service, hoists shall be installed perSection 16-1.3.Question (2): Must new hoists that have satisfied para. 16-2.1.1(a) and Section 16-2.2, and havebeen in inventory for a period of more than 1 yr, undergo any additional inspectio

12、n or testingby the manufacturer prior to being placed into service?Reply (2): No; however, when being placed into service, hoists shall be installed perSection 16-1.3.I-2STD-ASME B30.lb INT-ENGL 0757b70 Ob08370 653 ASME B30.16 INTERPRETATIONS Replies to Technical Inquiries April 1995 - September 199

13、8 FOREWORD This publication includes all of the written replies issued between the indicated dates by the Secretary, speaking for the ASME B30 Committee, Safety Standards for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings, to inquiries concerning interpretations of technical aspects o

14、f ASME B30.16, Overhead Hoists (Underhung). These replies are taken verbatim from the original letters except for a few typographical corrections and some minor editorial corrections made for the purpose of improved clarity. In some few instances, a review of the interpretation revealed a need for c

15、orrections of a technical nature; in these cases a corrected interpretation follows immediately after the original reply. These interpretations were prepared in accordance with the accredited ASME procedures. ASME procedures provide for reconsideration of these interpretations when or if additional

16、information is available that the inquirer believes might affect the interpretation. Further, persons aggrieved by this interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or a

17、ctivity. 630.16 Interpretations 16-12 Interpretation: 16-12 Subject: ASME B30.16b-1995 Date Issued: December 23, 1997 Question (1): What is the definition of “core protrusion” as stated in para. 16-2.4.l(a)(l)(a)? Reply (1): Core protrusion applies to the condition of the wire-rope when the core pro

18、trudes from an opening between strands of the wire-rope. Question (2): Are there any drawings or photos within the B30.16 volume that we can refer to on core protrusion? Reply (2): No. Question (3): Is para. 16-2.4.2(b)(2) referring to the words noted in Question (l), .e., core protrusion? If not, p

19、lease explain the phrase “loops out from the structure.” Reply (3): No. Paragraph 16-2.4.2(b)(2) states: “one outer wire broken at the contact point with the core of the rope, which has worked its way out of the rope structure and protrudes or loops out from the rope structure.” The phrase “one oute

20、r wire” applies to the outer wires of the outer strand. The phrase “protrudes or loops out from the rope structure” applies to the broken wire protruding or looping out from the strand, and is visually apparent by the length of wire protruding or looping out where the actual point of wire break is o

21、n the side of the strand that is adjacent to or against the core. Question (4): Reference is made to Fig. 7, titled “Core Protrusion,” in the Hoisting and Rigging Safety Manual, April 1996, published by the Construction Safety Association of Ontario. Is this what is meant by para. 16-2.4.l(a)(l)(a)?

22、 Reply (4): Yes. 3 STD.ASME B30.lb INT-ENGL C1757b70 Ob08392 42b 81 16-13 630.16 Interpretations Interpretation: 16-13 Subject: ASME B30.16- 1993 (including Addenda through 1996) Date Issued: September 29, 1998 Question (I): For a periodic inspection, pursuant to para, 16-2.1. I (b)(2) and following

23、, how are the terms “visual inspection” and “external conditions” interpreted in relation to paras. 16-2.1.3(b) and 16-2.1.3(d)(3)? Are disassembly and opening and removal not required? Reply (I): The terms “visual inspection” and “external conditions” relate to a visual and auditory inspection of t

24、he hoist without complete disassembly of the hoist, except for the opening or removal of any covers furnished that are for the direct inspection of one or more items, such as control enclosure covers, and such cover removal does not render the hoist inoperative. Some of the items listed in para. 16-

25、2.1.3(d)(3) are visable, and some of the items listed in para. 16-2.1.3(d)(3) would be noted by sound and/or function as the hoist is operated. Unusual sounds or improper operation would be the basis for further disassembly or inspection as stated in para. 16-2.1.3(c). Question (2): How is the phras

26、e “periodic inspections . . . do not require the hoist to be disassembled” in para. 16-2.1.3(a) reconciled with the phrase “covers and other items normally supplied to allow inspection of components should be opened and removed” in para. I6-2.1.3(h)? Reply (2): Wording of para. 16-2.1.3(a) means tha

27、t the hoist need not be completely disassembled into all of the components, such as gears, bearings, shafts, etc., that comprise the hoist unit. Wording of para. 16-2.1.3(b) refers to covers that are furnished for the direct inspection of one or more items. These covers are of the type that upon rem

28、oval, the hoist unit can still be operated; however, additional precautions may be required for such operations during inspection. Question (3): What constitutes “disassembly” as used in para. 16-2.1.3(a)? Reply (3): Refer to Reply (2) Question (4): What is meant by the phrase “normally supplied to

29、allow inspection” as used in para. 16- 2.1.3(b)? Reply (4): Refer to Reply (2) Question (5): How is the phrase “periodic inspections . . . do not require the hoist to be disassembled” in para. 16-2.1.3(a) reconciled with para. 16-2.1.3(d) that requires inspection of items such as gears, which may be completely encased within the body of the hoist? Reply (5): Refer to Reply (1). 4