ASME 30.16 INTERPRETACION.pdf

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ASME B30.16-2003

(Revi

sion of AS

ME B30.16-1998)

OVERHEAD

HOISTS

(UNDERHUNG)

ASME B30.16-2003

(Revi

sion of ASM

E B30.16-1998)

OVERHEAD

HOISTS

(UNDERHUNG)

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ASME B30.16-2003

(Revision of ASME B30.16-1998)

SAFETY STANDARD FOR CABLEWA

SAFETY STANDARD FOR CABLEWAYS, CRANES,

YS, CRANES, DERRICKS, HOISTS, HOOKS,

DERRICKS, HOISTS, HOOKS, JACKS, AND SLINGS

JACKS, AND SLINGS

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--``-`-`,,`,,`,`,,`---Date of Issuance: June 25, 2003 Date of Issuance: June 25, 2003

The next edition of this Standard is scheduled for publication in 2006. There will be no addenda The next edition of this Standard is scheduled for publication in 2006. There will be no addenda issu

issued ed to to this edition.this edition.

ASME issues written replies to inquiries concerning interpretations of technical aspects of this ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations are published on the ASME Web site under the Committee Pages at http:// Standard. Interpretations are published on the ASME Web site under the Committee Pages at http:// www.

www.asme.asme.org/corg/codes/ as odes/ as they are they are issueissued, and d, and will also be will also be publipublished within the shed within the next edition of next edition of thethe Standard.

Standard.

ASME is the registered trademark of The American Society of Mechanical Engineers. ASME is the registered trademark of The American Society of Mechanical Engineers.

This code or standard was developed under procedures accredited as meeting the criteria for American National This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made competent and concerned interests have had an opportunity to participate. The proposed code or standard was made avail

available forable for public reviepublic review w andand commecomment thatnt that provprovides an ides an oppoopportunitrtunityy for additionfor additional publical public input from industryinput from industry,, acadacademia,emia, regulatory agencies, and the public-at-large.

regulatory agencies, and the public-at-large.

ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity. ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.

ASME does not take any position with respect to the validity of any patent rights asserted in connection with any ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.

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government or industry endorsement of this code or standard.

ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.

ASME procedures and policies, which precludes the issuance of interpretations by individuals.

No part of this document may be reproduced in any form, No part of this document may be reproduced in any form,

in an electronic retrieval system or otherwise, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. without the prior written permission of the publisher.

The American Society of Mechanical Engineers The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Three Park Avenue, New York, NY 10016-5990

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

Print

Printed ed in in U.S.A.U.S.A.

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--``-`-`,,`,,`,`,,`---CONTENTS

Foreword . . . iv

Committee Roster . . . v

B30 Series Introduction . . . vii

Summary of Changes . . . x

Chapter 16-0 Scope, Definitions, and References . . . 1

Section 16-0.1 Scope of B30.16 . . . 1

Section 16-0.2 Definitions . . . 1

Section 16-0.3 References . . . 5

Chapter 16-1 Marking, Construction, and Installation . . . 6

Section 16-1.1 Marking . . . 6

Section 16-1.2 Construction . . . 6

Section 16-1.3 Installation . . . 9

Chapter 16-2 Inspection, Testing, and Maintenance . . . 10

Section 16-2.1 Inspection . . . 10

Section 16-2.2 Testing . . . 13

Section 16-2.3 Maintenance . . . 14

Section 16-2.4 Rope Inspection, Replacement, and Maintenance . . . 15

Section 16-2.5 Welded Link Chain Inspection, Replacement, and Maintenance . . . 16

Section 16-2.6 Roller Chain Inspection, Replacement, and Maintenance . . . 17

Chapter 16-3 Operation . . . 18

Section 16-3.1 Hoisting Practices for Operators . . . 18

Section 16-3.2 Handling the Load . . . 19

Section 16-3.3 Hoist Lockout/Tagout . . . 20

Figures 1 Hand Chain-Operated Chain Hoist . . . 2

2 Hand Chain-Operated Chain Hoist . . . 2

3 Electric-Powered Chain Hoist . . . 3

4 Air-Powered Chain Hoist . . . 3

5 Electric-Powered Wire Rope Hoist . . . 4

6 Electric-Powered Wire Rope Hoist . . . 4

7 Air-Powered Wire Rope Hoist . . . 5

Tables 1 Inspection for Hand Chain-Operated Hoists . . . 11

2 Inspection for Electric- or Air-Powered Hoists . . . 12

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--``-`-`,,`,,`,`,,`---FOREWORD

This American National Standard, Safety Standard for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings, has been developed under the procedures accredited by the American National Standards Institute (formerly the United States of America Standards Institute). This Standard had its beginning in December 1916 when an eight-page Code of Safety Standards for Cranes, prepared by an ASME Committee on the Protection of Industrial Workers, was presented to the annual meeting of the ASME.

Meetings and discussions regarding safety on cranes, derricks, and hoists were held from 1920 to 1925, involving the ASME Safety Code Correlating Committee, the Association of Iron and Steel Electrical Engineers, the American Museum of Safety, the American Engineering Standards Committee (later changed to American Standards Association and subsequently to the USA Standards Institute), Department of Labor — State of New Jersey, Department of Labor and Industry — State of Pennsylvania, and the Locomotive Crane Manufacturers Association. On June 11, 1925, the American Engineering Standards Committee approved the ASME Safety Code Correlating Committee’s recommendation and authorized the project with the U.S. Department of the Navy, Bureau of Yards and Docks, and ASME as sponsors.

In March 1926, invitations were issued to 50 organizations to appoint representatives to a Sectional Committee. The call for organization of this Sectional Committee was sent out October 2, 1926, and the committee organized November 4, 1926, with 57 members representing 29 national organizations. The Safety Code for Cranes, Derricks, and Hoists, ASA B30.2-1943, was created from the eight-page document referred to in the first paragraph. This document was reaffirmed in 1952 and widely accepted as a safety standard.

Due to changes in design, advancement in techniques, and general interest of labor and industry in safety, the Sectional Committee, under the joint sponsorship of ASME and the Naval Facilities Engineering Command, U.S. Department of the Navy, was reorganized as an American National Standards Committee on January 31, 1962, with 39 members representing 27 national organiza-tions.

The format of the previous code was changed so that separate volumes (each complete as to construction and installation; inspection, testing, and maintenance; and operation) would cover the different types of equipment included in the scope of B30.

In 1982, the Committee was reorganized as an Accredited Organization Committee, operating under procedures developed by ASME and accredited by the American National Standards Institute.

This Standard presents a coordinated set of rules that may serve as a guide to government and other regulatory bodies and municipal authorities responsible for the guarding and inspection of the equipment falling within its scope. The suggestions leading to accident prevention are given both as mandatory and advisory provisions; compliance with both types may be required by employers of their employees.

In case of practical difficulties, new developments, or unnecessary hardship, the administrative or regulatory authority may grant variances from the literal requirements or permit the use of other devices or methods, but only when it is clearly evident that an equivalent degree of protection is thereby secured. To secure uniform application and interpretation of this Standard, administrative or regulatory authorities are urged to consult the B30 Committee, in accordance with the format described in Section III, before rendering decisions on disputed points.

This volume of the Standard, which was approved by the B30 Committee and by ASME, was approved by ANSI and designated as an American National Standard on April 11, 2003.

Safety codes and standards are intendedto enhance public safety. Revisions result from Commit-tee consideration of factors such as technological advances, new data, andchanging environmental and industry needs. Revisions do not imply that previous editions were inadequate.

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- ASME B30 STANDARDS COMMITTEE

Safety Standards for Cableways, Cranes, Derricks, Hoists,

Hooks, Jacks, and Slings

(The following is the roster of the Committee at the time of approval of this Standard.)

STANDARDS COMMITTEE OFFICERS

P. S. Zorich, Chair

B. D. Closson, Vice Chair

J. D. Wendler, Secretary

STANDARDS COMMITTEE PERSONNEL

N. E. Andrew, Sverdrup Technology, Inc.

W. T. Hargrove, Alternate, Mantech International Corp. R. E. Bluff, Mingus Constructors, Inc.

R. J. Bolen, E. I. DuPont

A. D. Brown, Kenney Construction Co.

P. L. Rossi, Alternate, U.S. Department of Labor, OSHA S. C. Buck, International Union of Operating Engineers

L. D. Demark, Alternate, International Union of Operating Engineers T. A. Christensen, Alliance of American Insurers/Liberty Mutual

Insurance

M. W. Mills, Alternate, Liberty Mutual Group B. D. Closson, NACB Technical Services, Inc. T. L. Blanton, Alternate, NACB Group, Inc. J. P. Colletti, John P. Colletti & Associates, Inc.

R. A. Dahlin, Walker Magnetic Group

J. W. Downs, Jr., Alternate, Downs Crane and Hoist Co. D. W. Eckstine, Grove Worldwide

R. H. Fowler, U.S. Department of the Air Force J. L. Franks, Consultant

R. C. Slater, Alternate, McKay International Engineering J. L. Gordon, FKI Industries, Inc.

R. R. Reisinger, Alternate, FKI Industries, Inc.

N. C. Hargreaves, Power Crane & Shovel Association/Terex Corp. E. D. Fidler, Alternate, Terex Corp.

J. J. Headley, Crane Institute of America

R. M. Parnell, Alternate, Industrial Training International C. W. Ireland, Amclyde Engineered Products

A. Egging, Alternate, Amclyde Engineered Products L. S. Johnson, American Equipment Co.

HONORARY MEMBERS

J. M. Klibert, Lift-All Co., Inc. T. S. McKosky, Consultant R. W. Parry, Consultant

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G. L. Owens, Alternate, Granite Construction, Inc. R. M. Kohner, Landmark Engineering Services

H. I. Shapiro, Alternate, Specialized Carriers and Rigging Association/Howard I. Shapiro & Associates

H. G. Leidich, Ingersoll-Rand

J. T. Perkins, Alternate, Ingersoll-Rand C. Lucas, The Crosby Group

P. A. Boeckman, Alternate, The Crosby Group

L. D. Means, Wire Rope Technical Board/Means Engineering and Consulting

D. M. Sleightholm, Alternate, Bridon America Corp. K. J. Miller, Jacobs Engineering

D. W. Smith, Alternate, Chicago Bridge and Iron Co. J. E. Richardson, U.S. Department of the Navy

J. W. Rowland III, Association of Iron and Steel Engineers/ Bethlehem Steel Corp.

E. E. Rudy, U.S. Department of the Army J. C. Ryan, Boh Bros. Construction Co.

D. Sayenga, Associated Wire Rope Fabricators D. J. Bishop, Alternate, Bishop Lifting Products, Inc. G. W. Shields, Caterpillar, Inc.

A. R. Toth, Morris Material Handling

B. E. Weir, Jr., National Erectors Association/Norris Brothers Co., Inc.

S. Conant, Alternate, Conant Crane Rental Co.

J. D. Wendler, The American Society of Mechanical Engineers R. C. Wild, U.S. Army Corps of Engineers

S. G. Testerman, Alternate, U.S. Army Corps of Engineers D. N. Wolff, National Crane Corp.

P. S. Zorich, RZP International Ltd. - ` ` - ` - ` , , ` , , ` , ` , , `

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-B30.16 SUBCOMMITTEE PERSONNEL

R. R. Reisinger, Chair, FKI Industries W. R. Gedgard, Navy Crane Center

J. L. Gordon, Acco Chain and Lifting Products G. F. Hoffa, Consultant

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H. G. Leidich, Ingersoll-Rand

L. D. Means, Means Engineering and Consulting A. R. Toth, Morris Material Handling

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--``-`-`,,`,,`,`,,`---(03)

SAFETY STANDARD FOR CABLEWAYS, CRANES, DERRICKS, HOISTS,

HOOKS, JACKS, AND SLINGS

B30 SERIES INTRODUCTION

GENERAL

This Standard is one of a series of safety standards on various subjects that have been formulated under thegeneral auspices of theAmericanNational Standards Institute. One purpose of the Standard is to serve as a guide to governmental authorities having jurisdiction over subjects within the scope of the Standard. It is expected, however, that the Standard will find a major application in industry, serving as a guide to manufac-turers, purchasers, and users of the equipment.

For the convenience of the user, the Standard has been divided into separate volumes.

B30.1 Jacks

B30.2 Overhead and Gantry Cranes (Top Running Bridge, Single or Multiple Girder, Top Running Trolley Hoist)

B30.3 Construction Tower Cranes B30.4 Portal, Tower, and Pillar Cranes B30.5 Mobile and Locomotive Cranes B30.6 Derricks

B30.7 Base Mounted Drum Hoists

B30.8 Floating Cranes and Floating Derricks B30.9 Slings

B30.10 Hooks

B30.11 Monorails and Underhung Cranes

B30.12 Handling Loads Suspended From Rotorcraft B30.13 Storage/Retrieval (S/R) Machines and

Associated Equipment B30.14 Side Boom Tractors B30.15 Mobile Hydraulic Cranes

Note: B30.15-1973 has been withdrawn. The revision of B30.15 is included in the

latest edition of B30.5.

B30.16 Overhead Hoists (Underhung)

B30.17 Overhead and Gantry Cranes (Top Running Bridge, Single Girder, Underhung Hoist) B30.18 Stacker Cranes (Top or Under Running

Bridge, Multiple Girder With Top or Under Running Trolley Hoist)

B30.19 Cableways

B30.20 Below-the-Hook Lifting Devices B30.21 Manually Lever Operated Hoists B30.22 Articulating Boom Cranes

B30.23 Personnel Lifting Systems

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B30.24 Container Cranes1

B30.25 Scrap and Material Handlers B30.26 Rigging Hardware1

B30.27 Material Placement Systems1 B30.28 Balance-Lifting Units1

If these standards are adopted for governmental use, the references to other national codes and standards in the specific volumes may be changed to refer to the corresponding regulations of the governmental author-ities.

The use of cableways, cranes, derricks, hoists, hooks, jacks, and slings is subject to certain hazards that cannot be met by mechanical means but only by the exercise of intelligence, care, and common sense. It is therefore essential to have personnel involved in the use and oper-ation of equipment who are competent, careful, physi-cally and mentally qualified, and trained in the safe operation of the equipment and the handling of the loads.Serious hazards are overloading, dropping or slip-ping of the load caused by improper hitching or slinging, obstructing thefree passage of theload, andusing equip-ment for a purpose for which it was not intended or designed.

The Standards Committee fully realizes the impor-tance of proper design factors, minimum or maximum sizes, and other limiting dimensions of wire rope or chain and their fastenings, sheaves, sprockets, drums, and similar equipment covered by the Standard, all of which are closely connected with safety. Sizes, strengths, and similar criteria depend on many different factors, often varying with the installation and uses. These fac-tors depend on the condition of the equipment or mate-rial; the loads; the acceleration or speed of the ropes, chains, sheaves, sprockets, or drums; the type of attach-ments; the number, size, and arrangement of sheaves or other parts; environmental conditions causing corrosion or wear; and many variables that must be considered in each individual case. The rules given in the Standard must be interpreted accordingly, and judgment must be used in determining their application.

The Standards Committee will be glad to receive criti-cisms of this Standard’s requirements and suggestions 1 _{B30.24, B30.26, B30.27, and B30.28 are in the developmental}

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for its improvement, especially those based on actual experience in application of the rules.

Suggestions for changes to the Standard should be submitted to the Secretary of the B30 Committee, ASME, Three Park Avenue, New York, NY 10016-5990, and should be in accordance with the following format:

(a) Cite the specific paragraph designation of the per-tinent volume.

(b) Indicate the suggested change (addition, deletion, revision, etc.).

(c) Briefly state the reason and/or evidence for the suggested change.

(d) Submit suggested changes to more than one para-graph in the order that the parapara-graphs appear in the volume.

The B30 Committee will consider each suggested change in a timely manner in accordance with its proce-dures.

SECTION I: SCOPE

This Standard applies to the construction, installation, operation, inspection, maintenance, and safe use of lift-ing equipment used in construction and industrial set-tings. This includes, but is not limited to: articulating- boom, container, gantry, mobile, pedestal, portal, tower, and stacker cranes; balance-lifting units; below-the-hook lifting devices; cableways; derricks; jacks; hoists; hooks; loads suspended from rotorcraft; material placement systems; monorails; rigging hardware; slings; and scrap and material handlers.

This Standard does not apply to track and automotive jacks, railway or automobile wrecking cranes, shipboard cranes, shipboard cargo-handling equipment, well-drilling derricks, skip hoists, mine hoists, truck body hoists, car or barge pullers, conveyors, excavating equip-ment, or equipment falling within the scope of the fol-lowing Committees: A10, A17, A90, A92, A120, B20, B56, and B77.

SECTION II: PURPOSE

This Standard is designed to

(a) guard against and minimize injury to workers, and otherwise provide for the protection of life, limb, and property by prescribing safety requirements

(b) provide direction to owners, employers, supervi-sors, and others concerned with, or responsible for, its application

(c) guide governments and other regulatory bodies in the development, promulgation, and enforcement of appropriate safety directives

SECTION III: INTERPRETATIONS

Upon request, the B30Committee willrender an inter-pretation of any requirement of the Standard.

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Interpretations can only be rendered in response to a written request sent to the Secretary of the B30 Commit-tee, ASME, Three Park Avenue, New York, NY 10016-5990.

The request for interpretation should be clear and unambiguous. It is further recommended that the inquirer submit his request utilizing the following format.

Subject: Cite the applicable paragraph number(s) and provide a concise description.

Edition: Cite the applicable edition of the pertinent volume for which theinterpretationis being requested.

Question: Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, n ot a s a re qu es t f or a pp ro va l o f a proprietary design or situation. The inquirer may also include any plans or drawings that are necessary to explain the question; however, they should not contain any proprietary names or information. Requests that are not in this format will be rewritten in this formatby the Committee prior to being answered, which could change the intent of the original request.

ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available. Further, per-sons aggrieved by an interpretation may appeal to the cognizant ASME Committee or Subcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity.

SECTION IV: NEW AND EXISTING INSTALLATIONS

(a) Effective Date. The effective date of this volume for the purpose of defining new and existing installations shall be 1 year after its date of issuance.

(b) New Installations. Construction, installation, inspection, testing, maintenance, and operation of equipment manufactured and facilities constructed after the effective date of this volume shall conform to the mandatory requirements of this volume.

(c) Existing Installations. Inspection, testing, mainte-nance, and operation of equipment manufactured and facilities constructed prior to the effective date of this volume shall be done, as applicable, in accordance with the requirements of this volume.

It is not the intent of this volume to require retrofitting of existing equipment. However, when an item is being modified, its performance requirement shall be reviewed relative to the current volume. If the performance differs substantially, the need to meet the current requirement shall be evaluated by a qualified person selected by the

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-owner (user). Recommended changes shall be made by the owner (user) within 1 year.

SECTION V: MANDATORY AND ADVISORY RULES

Mandatory rules of this volume are characterized by use of the word shall. If a provision is of an advisory

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nature, it is indicated by use of the word should and is a recommendation to be considered, the advisability of which depends on the facts in each situation.

SECTION VI: METRIC CONVERSIONS

The values stated in U.S. Customary units are to be regarded as the standard.

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- ASME B30.16-2003

SUMMARY OF CHANGES

Following approval by the ASME B30 Committee and ASME, and after public review, ASME B30.16-2003 was approved by the American National Standards Institute on April 11, 2003. ASME B30.16-2003 includes editorial changes, revisions, and corrections introduced in ASME B30.16a-2001, as well as the following changes identified by a margin note, (03)_.

Page Location Change vii, viii General Revised

Section I Revised

3 Section 16-0.2 Definition of minimum breaking strength added 5 Section 16-0.3 Revised 6 16-1.1.4(c) Revised 7 16-1.2.6(a) Revised Footnote 1 Added 14 16-2.3.1(a) Revised 15 16-2.4.1(a)(1)(d) Revised 16-2.4.2(b) Revised

SPECIAL NOTE:

The interpretations to ASME B30.16 are included in this edition as a separate section for the user’s convenience. x -` ` -` -` , , ` , , ` , ` , , `

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- ASME B30.16-2003

OVERHEAD HOISTS (UNDERHUNG)

Chapter 16-0

Scope, Definitions, and References

SECTION 16-0.1: SCOPE OF B30.16

Volume B30.16 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of hand chain-operated chain hoists and electric and air-powered chain and wire rope hoists used for, but not limited to, vertical lifting and lowering of freely suspended, unguided, loads which consist of equipment and materials. (See Figs. 1 through 7.)

Requirements for a hoist that is used for a special purpose, such as, but not limited to, tensioning a load, nonvertical lifting service, lifting a guided load, lifting personnel, or drawing both the load and the hoist up ordownthe load chain or ropewhenthehoist isattached to the load, are not included in this volume.

SECTION 16-0.2: DEFINITIONS

abnormal operating conditions: environmental conditions that are unfavorable, harmful, or detrimental to theoper-ation of a hoist, such as excessively high or low ambient temperatures, exposure to weather, corrosive fumes, dust-laden or moisture-laden atmospheres, and hazard-ous locations.

administrative or regulatory authority: governmental agency, or the employer in the absence of governmental jurisdiction.

appointed: assigned specific responsibilities by the employer or the employer ’s representative.

authorized: appointed by a duly constituted administra-tive or regulatory authority.

block, load: the assembly of hook or shackle, swivel, bear-ing, sheaves, sprockets, pins, and frame suspended by the hoisting rope or load chain. This shall include any appurtenances reeved in the hoisting rope or load chain. brake: a device, other than a motor, used for retarding or stopping motion by friction or power means.

brake, holding: a friction brake for a hoist that is automati-cally applied and prevents motion when power is off. brake, mechanical load: an automatic type of friction brake used for controlling loads in a lowering direction. This

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unidirectional device requires torque from the motor or hand chain wheel to lower a load but does not impose any additional load on the motor or hand chain wheel when lifting a load.

braking, control: a method of controlling speed by remov-ing energy from the movremov-ing body or by impartremov-ing energy in the opposite direction.

braking, countertorque (plugging): a method of control by which the power to the motor is reversed to develop torque in the direction opposite to the rotation of the motor.

braking, dynamic: a method of controlling speed by using the motor as a generator, with the energy being dissi-pated by resistance.

braking, eddy current: a method of controlling or reducing speed by means of an energy induction load brake. braking, mechanical: a method of controlling or reducing speed by friction.

braking, pneumatic: a method of controlling or powering a drive or brake by means of a compressed gas.

braking, regenerative: a method of controlling speed in which the electrical energy generated by the motor is fed back into the power system.

chain, hand: the chain grasped by a person to apply force required for the lifting or lowering motion.

chain, load: the load-bearing chain in a hoist.

chain, roller: a series of alternately assembled roller links and pin links in which the pins articulate inside the bushings and the rollers are free to turn on the bushings. Pins and bushings are press fit in their respective link plates.

chain, welded link: a chain consisting of a series of inter-woven links formed and welded.

designated person: a person selected or assigned by the employer or theemployer’s representativeas being com-petent to perform specific duties.

drum: the cylindrical member around which rope is wound for lifting or lowering the load.

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--``-`-`,,`,,`,`,,`--- ASME B30.16-2003 OVERHEAD HOISTS (UNDERHUNG)

Fig. 1 Hand Chain-Operated Chain Hoist

equalizer: a device that compensates for unequal length or stretch of a rope or chain.

exposed: applies to hazardous objects not guarded or isolated (capable of being contacted inadvertently). guide, chain: a means to guide the load chain at the load

sprocket.

hazardous (classified) locations: locations where fire or explosion hazards may exist. Locations are classified depending on the properties of the flammable vapors, liquids or gases, or combustible dusts or fibers that may be present and the likelihood that a flammable or combustible concentration or quantity is present. Refer to

ANSI/NFPA 70.

class 1 locations: locations in which flammable gases or vapors are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures.

class 2 locations: locations that are hazardous because of the presence of combustible dust.

class 3 locations: locations that are hazardous because of the presence of easily ignitable fibers or flyings, but in which such fibers or flyings are not likely to be in suspension in the air in quantities sufficient to produce ignitable mixtures.

hoist: a suspended machinery unit that is used for lifting or lowering a freely suspended (unguided) load.

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Fig. 2 Hand Chain-Operated Chain Hoist

lifting devices: devices that are not normally reeved onto the hoist rope or chain, such as hook-on buckets, mag-nets, grabs, and other supplemental devices used for ease of handling certain types of loads. The weight of these devices is to be considered part of the load to be lifted.

limit device: a device that is operated by some part or motion of a power-driven hoist to limit motion.

load: the total superimposed weight on the load block or hook.

load, rated: the maximum load for which a hoist is desig-nated by the manufacturer or a qualified person. load suspension parts: the load suspension parts of the hoist are the means of suspension (hook or lug), the structure or housing that supports the drum or load sprocket, the drum or load sprocket, the rope or load chain, the sheaves or sprockets, and the load block or hook.

lockout/tagout: the placement of a lock/tag on theenergy-isolating device in accordance with an established pro-cedure. - ` ` - ` - ` , , ` , , ` , ` , , `

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OVERHEAD HOISTS (UNDERHUNG) ASME B30.16-2003

Fig. 3 Electric-Powered Chain Hoist

minimum breaking strength: specified value for wire rope which the actual (measured) breaking force meets or exceeds.

normal operating conditions: conditions during which a hoist is performing functions within the scope of the original design.

overload: any load greater than the rated load.

overtravel restraint: a device used to prevent the slack load chain from inadvertently being lowered out of the load sprocket.

parts (lines): number of lines of rope or chain supporting the load block or hook.

pawl: a device for holding the machinery against unde-sired rotation by engaging a ratchet.

pendant station: controls suspended from the hoist for operating the unit from the floor.

power transmission parts: the machinery components including the gears, shafts, clutches, couplings, bearings, motors, and brakes.

qualified person: a person who, by possession of a recog-nized degree in an applicable field, or certificate of pro-fessional standing, or who, by extensive knowledge,

3

Fig. 4 Air-Powered Chain Hoist

training, and experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter and work.

ratchet: a toothed member forengagement with thepawl. reeving: a system in which a rope or chain travels around drums, sheaves, or sprockets.

rope: refers to wire-rope unless otherwise specified. service, normal: service that involves operation with ran-domly distributed loads within the rated load limit, or uniform loads less than 65% of rated load for not more than 15% of the time for manually operated hoists, and 25% of the time for electric- or air-powered hoists. service, heavy: service that involves operation within the rated load limit, which exceeds normal service.

service, severe: service that involves normal or heavy ser-vice with abnormal operating conditions.

shall: indicates that the rule is mandatory and must be followed.

sheave: a grooved wheel or pulley used with a rope or chain to change direction and point of application of a pulling force.

sheave, nonrunning: a sheave used to equalize tension in opposite parts of the rope or chain. Because of its slight

-` ` -` -` , , ` , , ` , ` , , `

(16)

- ASME B30.16-2003 OVERHEAD HOISTS (UNDERHUNG)

Fig. 5 Electric-Powered Wire Rope Hoist

Fig. 6 Electric-Powered Wire Rope Hoist

4

movement, it is not termed a running sheave.

sheave, running: a sheave that rotates as the load block is lifted or lowered.

should: indicates that the rule is a recommendation, the advisability of which depends on the facts in each situ-ation.

side pull: the component of the hoist pull acting horizon-tally when the hoist lines are not operated vertically. slash ( / ): a slash ( / ) denotes and/or and indicates that two words are to be taken together or individually. sprocket, idler: a freely rotating device that changes the direction of the load chain.

sprocket, load: a hoist component that transmits motion to the load chain. This component is sometimes called load wheel, load sheave, pocket wheel, or chain wheel. stripper: a device that aids the load chain in leaving the load sprocket.

switch: a device for making, breaking, or changing the connections in an electric or pneumatic circuit (valve). unattended: a condition in which the operator of a hoist is not at the operating control devices (pendant station or hand chain). If, however, the control devices are within an unobstructed distance of 26 ft (8.0 m) and within sight of the operator, the hoist should be consid-ered attended.

wheel, hand chain: a wheel with formed pockets on its periphery to allow torque to be transmitted when a force is applied to the hand chain.

(17)

--``-`-`,,`,,`,`,,`---(03)

OVERHEAD HOISTS (UNDERHUNG) ASME B30.16-2003

Fig. 7 Air-Powered Wire Rope Hoist

SECTION 16-0.3: REFERENCES

The following is a list of standards and specifications referenced in this Standard, showing the year of the approval.

ANSI/NEMA Standards Publication No. ICS6-1993, Industrial Control and Systems: Enclosures

ANSI Z535.4-1991, Product Safety Signs and Labels Publisher: National Electrical Manufacturers

Associa-tion (NEMA), 1300 North 17th Street, Rosslyn, VA 22209

ANSI/NFPA 70-2002, National Electrical Code

Publisher: National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02269-9101

ANSI Z241.2-1999, Safety Requirements for Melting and Pouring of Metals in the Metalcasting Industry Publisher: American Foundry Society (AFS), 505 State

Street, Des Plaines, IL 60016-8399

ANSI Z244.1-1982 (R1993), Safety Requirements for the Lockout/Tagout of Energy Sources

Publisher: American National Standards Institute (ANSI), 25 West 43rd Street, New York, NY 10036

5

ASME B29.1M-1993 (R1999), Precision Power Transmis-sion Roller Chains, Attachments, and Sprockets1 ASME B29.24M-1995, Roller Load Chains for Overhead

Hoists1

ASME B30.9-1996, Slings1 ASME B30.10-1999, Hooks1

ASME B30.11-1998, Monorails and Underhung Cranes1 ASME B30.17-1998, Overhead and Gantry Cranes (Top

Running Bridge, Single Girder, Underhung Hoist)1 ASME HST-1-1999, Performance Standard for Electric

Chain Hoists1

ASME HST-2-1999, Performance Standard for Hand Chain Manually Operated Chain Hoists1

ASME HST-4-1999, Performance Standard for Overhead Electric Wire Rope Hoists1

ASME HST-5-1999, Performance Standard for Air Chain Hoists1

ASME HST-6-1999, Performance Standard for Air Wire Rope Hoists1

Publisher: The American Society of Mechanical Engi-neers (ASME International), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2900, Fairfield, NJ 07007-2900

1_{Copies may also be obtained from the American National}

Stan-dards Institute, Inc., 25 West 43rd Street, New York, NY 10036.

-` ` -` -` , , ` , , ` , ` , , `

(18)

Chapter 16-1

Marking, Construction, and Installation

SECTION 16-1.1: MARKING

16-1.1.1 Rated Load

The rated load of the hoist shall be marked on the hoist or its load block and shall be legible from the ground or floor.

16-1.1.2 Controls

Each control actuator of an electric- or air-powered hoist shall be marked to indicate the direction of resul-tant motion.

16-1.1.3 Identification

The hoist shall be marked with manufacturer’s identi-fication information, on a plate or label attached to the hoist, or cast, forged, or stamped on the hoist, as follows:

(a) Hand Chain-Operated Hoist (1) name of manufacturer

(2) manufacturer’s model or serial number (b) Electric-Powered Hoist

(1) name of manufacturer

(2) manufacturer’s model or serial number

(3) voltage of AC or DC power supply and phase and frequency of AC power supply

(4) circuit ampacity (c) Air-Powered Hoist

(1) name of manufacturer

(2) manufacturer’s model and serial number (3) rated air pressure

16-1.1.4 Warnings

(a) All hand chain-operated hoists shall have affixed to the hoist or load block, a label or labels displaying information concerning operating procedures. The label or labels shall be in compliance with ANSI Z535.4, and shall include cautionary language against

(1) lifting more than rated load

(2) operating hoist with twisted, kinked, or dam-aged chain

(3) operating damaged or malfunctioning hoist (4) lifting people

(5) lifting loads over people

(6) operating hoist with other than manual power (7) removing or obscuring label

(b) All electric-powered or air-powered hoists shall have affixed to the hoist, load block, or controls, a label or labels displaying information concerning operating

6

procedures. The label or labels shall be in compliance with ANSI Z535.4, and shall include cautionary lan-guage against

(1) lifting more than rated load

(2) operating hoist when load is not centered under hoist

(3) operating hoist with twisted, kinked, or dam-aged chain or rope

(4) operating damaged or malfunctioning hoist (5) lifting people

(6) lifting loads over people

(7) operating a rope hoist with a rope that is not properly seated in its groove

(8) removing or obscuring label

(c) A label shall be affixed on all electrical control enclosures. The label shall be in compliance with ANSI Z535.4, and shall include, but not be limited to, informa-tion such as:

(1) “DISCONNECT POWER AND LOCKOUT/ TAGOUT DISCONNECTING MEANS BEFORE R EM OV IN G C OV ER O R S ERV IC IN G T HI S EQUIPMENT”

(2) “DO NOT OPERATE WITHOUT COVER IN PLACE”

SECTION 16-1.2: CONSTRUCTION

16-1.2.1 Mechanical Design

(a) The hoist and appurtenances shall be designed to withstand all stresses imposed under normal operating conditions while handling loads within the rated load (capacity).

(b) Load suspension parts of hand chain-operated hoists shall be designed so that the static stress calcu-lated for the rated load shall not exceed 25% of the average ultimate material strength.

(c) Load suspension parts of electric- or air-powered hoists shall be designed so that the static stress calcu-lated for the rated load shall not exceed 20% of the average ultimate material strength.

(d) Power transmission parts shall be designed so that the dynamic stresses calculated for the rated load shall not exceed the endurance limits established by the man-ufacturer.

(e) Modifications to upgrade, rerate, or modernize hoist equipment shall be as authorized only by the origi-nal equipment manufacturer or a qualified person.

(03) - ` ` - ` - ` , , ` , , ` , ` , , `

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-OVERHEAD HOISTS (UNDERHUNG) ASME B30.16-2003

(f) The hoist should be designed in accordance with applicable hoist design and performance standards. Refer to ASME HST-1, ASME HST-2, ASME HST-4, ASME HST-5, and ASME HST-6.

16-1.2.2 Electrical Design (Electric-Powered Hoists Only)

(a) Electrical construction shall comply with Article 610 of ANSI/NFPA 70.

(b) Unless otherwise specified, control enclosures shall be NEMA Type1, general purpose for indoor appli-cation in accordance with ANSI/NEMA No. ICS6.

(c ) Electrical equipment shall be so located or enclosed that live parts will not be exposed to inadver-tent contact under normal operating conditions.

(d) Enclosures for resistors (if required) shall provide means for heat dissipation and shall be installed to mini-mize the accumulation of combustible matter. Provision shall be made to prevent broken resistor parts or molten metal from falling onto operator, other personnel, or combustible materials.

16-1.2.3 Controls (Electric- or Air-Powered Hoists Only)

(a) Controls, except in automatic cycling operation, shall return to the off position when released, and hook motion shall stop.

(b) Reversing contactor of electric-powered hoists shall be mechanically or electrically interlocked to pre-vent line-to-line faults.

(c) Thevoltageat pendant push-button stationof elec-tric-powered hoists shall not exceed 150 V for AC or 300 V for DC.

(d) A pendant station shall be supported in a manner that will protect the electrical conductors or air hoses against strain. Any pendant station that might present a hazard to the operator, if a ground fault occurs, shall be grounded.

16-1.2.4 Rope Sheaves (Electric- or Air-Powered Hoists Only)

(a) The grooves shall be free from surface conditions or damage that could cause accelerated wear or damage to the rope. The cross-sectional radius at the bottom of the groove should be such as to form a close-fitting saddle for the size of rope used. The sides of the groove shall be tapered outward and rounded at the rim to facilitate entrance of the rope into the groove. Flange rims shall run true about the axis of rotation.

(b) Sheaves shall be so mounted as to guard against rope jamming during normal operating conditions.

(c) All running sheave bearings, except permanently lubricated bearings, should be equipped with means for lubrication.

7

16-1.2.5 Rope Drum (Electric- or Air-Powered Hoists Only)

Rope drums shall be grooved except when the hoist is provided by the manufacturer for a special applica-tion. This requirement does not preclude the use of mul-tiple layer spooling. The grooves shall be free from surface conditions or damage that could cause acceler-ated wear or damage to the rope. The cross-sectional radius at the bottom of the groove should form a close-fitting saddle for the size of rope used.

16-1.2.6 Ropes (Electric- or Air-Powered Hoists Only) (a) The hoisting ropes shall be of a construction rec-ommended for hoist service. The rated load divided by the number of parts (lines) of rope shall not exceed 20% of the minimum breaking strength1 of the rope. When rope and rope core may be exposed to an environmental condition under which rope or core would be damaged, a rope and core having resistance to the conditions shall be used.

(b ) Socketing shall be done in a manner recom-mended by the rope of fitting manufacturer or a quali-fied person.

(c) The rope ends shall be attached to the hoist in a manner to prevent disengagement throughout rated hook travel. No less than two wraps of rope shall remain on each anchorage of the hoist drum when the hook is in its extreme low position unless a lower limit device is provided, in which case no less than one wrap shall remain on each anchorage of the hoist drum.

(d) Eye splices shall be made in a manner recom-mended by the rope or hoist manufacturer or a qualified person. Rope thimbles should be used in the eye.

(e) Wire-rope clips shall be drop-forged steel of the single saddle (U-bolt) or double saddletype clip. Mallea- ble cast iron clips shall not be used. For spacing, number of clips, and torque values, refer to the clip manufactur-er’s recommendation. Wire-rope clips attached with U- bolts shall have the U-bolt over the dead end of the rope and the live rope resting in the clip saddle. Clips shall be tightened evenly to the recommended torque. After the initial load is applied to the rope, the clip nuts shall be retightened to the recommended torque to compen-sate for any decrease in rope diameter caused by the load. Rope clip nuts should be retightened periodically to compensate for any further decrease in rope diameter during usage.

(f) Swaged or compressed fittings shall be applied as recommended by the rope, hoist, or fitting manufacturer or a qualified person.

(g) If a load is supported by more than one part of rope, the tension on the parts shall be equalized.

(03)

1_{Minimum breaking strength formerly referred to as nominal}

break-ing strength. (03) -` ` -` -` , , ` , , ` , ` , , `

(20)

(h) Wherever exposed to ambient temperatures at the rope in excess of 180°F (82°C), rope having an indepen-dent wire-rope or wire-strand core, or other tempera-ture-damage resistant core, shall be used.

16-1.2.7 Load Sprockets

(a) Load sprockets shall have pockets or teeth to allow engagement of the load chain.

(b) Load sprockets shall be guarded.

(c) Provision shall be made to guard against jamming of the load chain within the hoisting mechanism under normal operating conditions.

16-1.2.8 Load Chain

(a) Load chain may be either roller or welded link type. Chain shall be pitched (calibrated) so as to pass over all load sprockets without binding.

(b ) Roller load chain shall comply with ASME B29.24M.

(c) The load chain shall be proof tested by the chain or hoist manufacturer with a load at least equivalent to 11 ⁄ 2 times the hoist’s rated load divided by the number

of chain parts supporting the load.

(d) If a load is supported by more than one part of load chain, the tension on the parts shall be equalized.

(e) Load chain properties do not conform to those shown in ASME B30.9 or ASME B29.1M.

16-1.2.9 Hooks

If hooks are of the swiveling type, they should rotate freely. Hooks shall be equipped with latches unless use of the latch creates a hazardous condition. When required, a latch shall be provided to bridge the throat opening of the hook and retain, under slack conditions, such items as, but not limited to, slings and chains. Refer to ASME B30.10.

16-1.2.10 Load Blocks

(a) Hand Chain-Operated Hoist. Means shall be pro-vided to guard against load chain jamming in the load block under normal operating conditions.

(b) Electric- or Air-Powered Hoist. Load blocks shall be of the enclosed type, and means shall be provided to guard against rope or load chain jamming in the load block under normal operating conditions.

16-1.2.11 Brakes

(a) Hand Chain-Operated Hoist. Hand chain-operated hoist(s) shall be so designed that, when the actuating force is removed, it will automatically stop and hold any test load up to 125% of the rated load.

(b) Electric-Powered Hoist

(1) Under normal operating conditions with rated load and test conditions with test loads up to 125% of rated load, the braking system shall perform the follow-ing functions:

8

(a) stop and hold the load hook when controls are released

(b) limit the speed of load during lowering, with or without power, to a maximum speed of 120% of rated lowering speed for the load being handled

(c) stop and hold the load hook in the event of a complete power failure

(2) The braking system shall have thermal capacity for the frequency of operation required by the service.

(3) The braking system shall have provision for adjustments where necessary to compensate for wear.

(4) Electric-powered hoists that handle molten material shall be equipped with one of the following arrangements:

(a) Two holding brakes shall be provided, one of which is applied to a gear reducer shaft, plus control braking means. Each holding brake shall have a torque rating not less than 100% of rated load hoisting torque at the point where the brake is applied.

(b) One holding brake shall be provided if the hoisting unit has a mechanical load brake or a control braking means that provides controlled lowering of the load upon loss of power. The holding brake shall have a torque rating not less than 150% of rated load hoisting torque at the point where the brake is applied.

(c) Air-Powered Hoist

(1) Under normal operating conditions with rated load and test conditions with test loads up to 125% of rated load, the braking system shall perform the follow-ing functions:

(a) stop and hold the load hook when controls are released

(b) prevent an uncontrolled lowering of the load in the event of a loss of air pressure

(2) The braking system shall have thermal capacity for the frequency of operation required by the service.

(3) The braking system shall have provision for adjustments where necessary to compensate for wear. 16-1.2.12 Hand Chain (Hand Chain-Operated Hoists

Only)

(a) The hand chain shall be of a shape and pitch to fit the hand chain wheel without binding or jamming under normal operating conditions.

(b) The hand chain shall be guarded to prevent disen-gagement from the hand chain wheel.

(c) The hand chain shall withstand, without perma-nent distortion, a force of three times the pull required to lift the rated load.

(d) Hand chain properties do not conform to those shown in ASME B30.9.

16-1.2.13 Overtravel Restraint (Hand Chain-Operated Hoists Only)

Before the load chain can be completely run out of the hoist, it shall be restrained in its fully extended

(21)

--``-`-`,,`,,`,`,,`---OVERHEAD HOISTS (UNDERHUNG) ASME B30.16-2003

position. The restraint shall be such that the unloaded hoist can withstand a lowering hand chain force equiva-lent to twice the pull required to lift the rated load or, with rated load on the hoist, a hand chain force equiva-lent to the pull required to lift the rated load.

16-1.2.14 Overtravel Protection (Electric- or Air-Powered Hoists Only)

The hoist shall be so designed and constructed that the load hook, either loaded or empty, shall not exceed the upper limit of travel. On wire-rope hoists, if a geared or other lift-limiting device that operates in relation to drum turns is used, an additional lift-limiting device that operates independently of drum rotations shall be provided.

16-1.2.15 Power Failure Protection (Electric- or Air-Powered Hoists Only)

Partial or complete interruption of the power supply (air or electric) during operation shall not result in uncontrollable motion of the load.

16-1.2.16 Lubrication

If lubrication is required, accessible means for lubrica-tion should be provided.

16-1.2.17 Manual

The manufacturer shall furnish an instruction manual with each hoist. The manual shall include information on the following:

(a) installation (b) operation

(c) inspection and testing

(d) lubrication, maintenance, and repair

(e) wiring diagram (electric powered only; may be supplied separately)

SECTION 16-1.3: INSTALLATION

16-1.3.1 Procedure

Procedures for installation recommended in the man-ual should be followed.

16-1.3.2 Support

The supporting structure, including trolleys, mono-rail, or crane, shall be designed to withstand the loads and forces imposed by the hoist for the rated load. 16-1.3.3 Location

(a) Hoists shall be installed in locations that will allow movement of the operator to stay clear of the load.

9

(b) When hoists are used in hazardous locations as defined by ANSI/NFPA 70, modifications to these rules or additional safety requirements may be necessary.

(c) When hoists are used to handle molten material, modifications to these rules or additional safety require-ments may be necessary. Refer to ANSI Z241.2.

(d) When electric hoists are used in locations other than general indoor applications, control enclosures should be selected in accordance with ANSI/NEMA No. ICS6.

(e) Pendant controls of electric- or air-powered hoists should be located at a convenient level above the operating floor.

(f) An electric- or air-powered hoist shall not be installed where the load hook can be lowered beyond the rated hook travel under normal operating conditions unless the hoist is equipped with a lower limit device. (g) Where the slack load chain hanging from the hoist may create a hazard to operations or personnel, a chain container recommended by the hoist manufacturer or qualified person should be used.

(h) When hoists are supported and used on cranes, trolleys, or monorails, modifications to these rules or additional safety requirements may be necessary. Refer to ASME B30.11 and ASME B30.17.

16-1.3.4 Power Connections

(a) Electric-powered hoists shall be connected in accordance with ANSI/NFPA 70.

(b) Air-powered hoists shall be connected to an air supply not exceeding the rated pressure at the hoist undernormal operating conditions. To preventexcessive brake wear or heating, the air supply should be sufficient

to operate the brake release mechanism, if provided. 16-1.3.5 Direction of Motion (Electric- or

Air-Powered Hoists Only)

(a) Electric-Powered Hoists. Polyphase hoist motors shall be connected to the power supply lines in such a manner that the hook motion agrees with the control marking. Internal connections in the hoist or pendant station wiring shall not be changed to accomplish this. Phase reversal (motor reversal), if necessary, shall be accomplished by reversing the power leads to the hoist unit.

(b) Air-Powered Hoists. Air hoist motors shall be con-nected in such a manner that the hook motion agrees with the control marking.

16-1.3.6 Check Points

After installation, a check should be made as indicated in para. 16-2.1.2. - - ` ` - ` - ` , , ` , , ` , ` , , `

(22)

Chapter 16-2

Inspection, Testing, and Maintenance

SECTION 16-2.1: INSPECTION

16-2.1.1 Inspection Classification

(a) Initial Inspection. Prior to initial use, all new, altered, or modified hoists shall be inspected by a desig-nated person to verify compliance with the applicable provisions of this volume.

(b) Inspection procedures for hoists in regular service are divided into two general classifications based upon the intervals at which inspection should be performed. The intervals in turn are dependent upon the nature of the critical components of the hoist and the degree of their exposure to wear, deterioration, or malfunction. The two general classifications are herein designated as frequent and periodic, with respective intervals between

inspections as defined below.

(1) frequent inspection: visual examinations by the operator or other designated person with records not required.

(a) normal service: monthly

(b) heavy service: weekly to monthly (c) severe service: daily to weekly

(2) periodic inspection: visual inspection by a desig-nated person who makes records of external conditions to provide the basis for a continuing evaluation. An external coded mark on the hoist is an acceptable identi-fication in lieu of records.

(a) normal service: yearly

(b) heavy service: semi-annually (c) severe service: quarterly

16-2.1.2 Frequent Inspection (See Also Tables 1 and 2)

(a) Frequent inspections shall be performed at inter-vals defined in para. 16-2.1.1(b)(1) and shall include observations during operation.

(b) A designated person shall determine whether con-ditions found during the inspection constitute a hazard and whether a more detailed inspection is required.

(c) The following items shall be inspected:

(1) operating mechanisms for proper operation, proper adjustment, and unusual sounds.

(2) hoist upper limit device of electric- or air-pow-ered hoists, without a load on the hook at the beginning of each shift. Care shall be exercised. The load block shall be inched into its limit device or run in at slow speed on multi-speed or variable-speed hoists.

(3) hoist braking system for proper operation.

10

(4) lines, valves, and other parts of air systems for leakage.

(5) hooks in accordance with ASME B30.10, Fre-quent Inspection.

(6) hook latches, if used, for proper operation. (7) hoist rope in accordance with para. 16-2.4.1(a). (8) hoist load chain in accordance with para. 16-2.5.1 or 16-2.6.1.

(9) rope or load chain reeving for compliance with recommendations of the hoist manufacturer.

16-2.1.3 Periodic Inspection (See Also Tables 1 and 2)

(a) Periodic inspections shall be performed at inter-vals defined in para. 16-2.1.1(b)(2) and may be per-formed with the hoist at its normal location and do not require the hoist to be disassembled.

(b) Covers andotheritems normally supplied to allow inspectionof components should be opened or removed. (c) A designated person shall determine whether con-ditions found during inspection constitute a hazard and whether disassembly is required.

(d) The following items shall be inspected: (1) the items listed in para. 16-2.1.2(c) (2) fasteners for evidence of loosening

(3) load blocks, suspension housings, hand chain wheels, chain attachments, clevises, yokes, suspension bolts, shafts, gears, bearings, pins, rollers, and locking

and clamping devices for evidence of wear, corrosion, cracks, and distortion

(4) hook-retaining nuts or collars, and pins, welds, or rivets used to secure the retaining members for evi-dence of damage

(5) load sprockets, idler sprockets, drums, and sheaves for evidence of damage and wear

(6) the brake mechanism on hand chain hoists for evidence of worn, glazed, or oil-contaminated friction disks; worn pawls, cams, or ratchets; corroded, stretched, or broken pawl springs

(7) the motor brake and load brake on electric- or air-powered hoists for evidence of wear

(8) electrical apparatus on electric-powered hoists for evidence of pitting or deterioration of controller con-tacts

(9) supporting structure or trolley, if used, for evi-dence of damage -` ` -` -` , , ` , , ` , ` , , `

(23)

-OVERHEAD HOISTS (UNDERHUNG) ASME B30.16-2003

Table 1 Inspection for Hand Chain-Operated Hoists

Normal Service Heavy Service Severe Service

Visual Record Visual Record Visual Record

Monthly Yearly Weekly Semiannually Daily Quarterly

Item [Note (1)] [Note (2)] [Note (1)] [Note (3)] [Note (1)] [Note (3)]

Frequent Inspection (Refer to para. 16-2.1.2)

All functional operating mechanisms for X . . . X . . . X . . .

maladjustment and unusual sounds

Hoist braking system for proper operation X . . . X . . . X . . .

Hooks in accordance with ASME B30.10 X . . . X . . . X . . .

Hook latch operation, if used X . . . X . . . X . . .

Load chain in accordance with para. 16-2.5.1 or X . . . X . . . X . . .

16-2.6.1

Load chain reeving for compliance with hoist X . . . X . . . X . . .

manufacturer ’s recommendations

Periodic Inspection (Refer to para. 16-2.1.3)

Requirements of frequent inspection . . . X . . . X . . . X

Evidence of loose bolts, nuts, or rivets . . . X . . . X . . . X

Evidence of worn, corroded, cracked, or distorted . . . X . . . X . . . X

parts such as load blocks, suspension housing, hand chain wheels, chain attachments, clevises, yokes, suspension bolts, shafts, gears, bearings, pins, rollers, and locking and clamping devices

Evidence of damage to hook retaining nuts or . . . X . . . X . . . X

collars and pins, and welds or rivets used to secure the retaining numbers

Evidence of damage or excessive wear of load . . . X . . . X . . . X

sprockets, idler sprockets, or hand chain wheel

Evidence of worn, glazed, or oil-contaminated . . . X . . . X . . . X

friction discs; worn pawls, cams or ratchet; corroded, stretched, or broken pawl springs in brake mechanism

Evidence of damage of supporting structure or . . . X . . . X . . . X

trolley, if used

Label or labels required by para. 16-1.1.4 for . . . X . . . X . . . X

legibility

End connections of load chain . . . X . . . X . . . X

NOTES:

(1) By operator or other designated person with records not required.

(2) Visual inspection by a designated person making records of conditions to provide the basis for a continuing evaluation. (3) As in Note (2) unless conditions indicate that disassembly should be done to permit detailed inspection.

(24)

--``-`-`,,`,,`,`,,`--- ASME B30.16-2003 OVERHEAD HOISTS (UNDERHUNG)

Table 2 Inspection for Electric- or Air-Powered Hoists

Normal Service Heavy Service Severe Service

Visual Record Visual Record Visual Record

Monthly Yearly Weekly Semiannually Daily Quarterly

Item [Note (1)] [Note (2)] [Note (1)] [Note (3)] [Note (1)] [Note (3)]

Frequent Inspection (Refer to para. 16-2.1.2)

All functional operating mechanisms for X . . . X . . . X . . .

maladjustment and unusual sounds

Limit devices for operation X . . . X . . . X . . .

Hoist braking system for proper operation X . . . X . . . X . . .

Air lines, valves, and other parts for leakage X . . . X . . . X . . .

Hooks in accordance with ASME B30.10 X . . . X . . . X . . .

Hook latch operation, if used X . . . X . . . X . . .

Hoist rope in accordance with para. 16-2.4.1(a) X . . . X . . . X . . .

Load chain in accordance with para. 16-2.5.1 or X . . . X . . . X . . .

16-2.6.1

Rope or load chain reeving for compliance with X . . . X . . . X . . .

hoist manufacturer ’s recommendations Periodic Inspection (Refer to para. 16-2.1.3)

Requirements of frequent inspection . . . X . . . X . . . X

Hoist rope in accordance with para. 16-2.4.1(a) . . . X . . . X . . . X

Evidence of loose bolts, nuts, or rivets . . . X . . . X . . . X

Evidence of worn, corroded, cracked, or distorted . . . X . . . X . . . X

parts such as load blocks, suspension housing, chain attachments, clevises, yokes, suspension bolts, shafts, gears, bearings, pins, rollers, and locking and clamping devices

Evidence of damage to hook retaining nuts or . . . X . . . X . . . X

collars and pins, and welds or rivets used to secure the retaining numbers

Evidence of damage or excessive wear of load . . . X . . . X . . . X

sprockets, idler sprockets, and drums or sheaves

Evidence of excessive wear on motor or load brake . . . X . . . X . . . X

Electrical apparatus for signs of pitting or any . . . X . . . X . . . X

deterioration of visible controller contacts

Evidence of damage of supporting structure or . . . X . . . X . . . X

trolley, if used

Function labels on pendant control stations for . . . X . . . X . . . X

legibility

Label or labels required by para. 16-1.1.4 for . . . X . . . X . . . X

legibility

End connections of rope or load chain . . . X . . . X . . . X

NOTES:

(1) By operator or other designated person with records not required.

(2) Visual inspection by a designated person making records of conditions to provide the basis for a continuing evaluation. (3) As in Note (2) unless conditions indicate that disassembly should be done to permit detailed inspection.

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