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B30.20-200X(Revision of B30.20-2006)

BELOW THEHOOK

LIFTING DEVICESNovember 2009 Draft

Tentative

Subject to Revision or WithdrawalSpecific permission required for

Reproduction or Quotation

ASME Codes and Standards

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FOREWORDThis American National Standard, Safety Standard for Cableways, Cranes, Derricks, Hoists,

Hooks, Jacks, and Slings, has been developed under the procedures accredited by the AmericanNational 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 Committees 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 organizations.

The format of the previous code was changed so that separate standards (each complete as to

construction and installation; inspection, testing, and maintenance; and operation) will 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 the 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 accordancewith the format described in Section IX, before rendering decisions on disputed points.

This Volume of the Standard, contains revisions including making maintenance mandatory and other changes to

improve clarity and definitions which was approved by the B30 Committee and by ASME, was

approved by ANSI and designated as an American National Standard on December 1, 2006.TBD

Safety codes and standards are intended to enhance public safety. Revisions result from committee

consideration of factors such as technological advances, new data, and changing environmental

and industry needs Revisions do not imply that previous editions were inadequate

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B30.20 Summary of Changes

Page Location

General Replaced modify with alter throughout20-0.1 Revised20-0.2 Add, alteration, altered, modification and

modified and repair.Delete designated loadRevised below the hook lifting device

20-0.3 Added abnormal operating conditions, and

service special or infrequent. Revisedservice normal, category A and Category B,and Service, heavyDelete Chain/Hand wheel and grippingforce.

20-0.4 Added abnormal operating conditions, andservice special or infrequent.Revised service normal, category A andCategory B, and Service, heavy, horizontaland vertical surface lift and ring seal,vacuum lifter and vacuum reservoirDelete breakaway force, high temperaturesurface, low-temperature service, peel off,and shear breakaway force

20-0.5 Added abnormal operating conditions, and

service special or infrequent. Revised dutycycle, service normal, category A andCategory B, and Service, heavy

20-0.6 Added abnormal operating conditions, andservice special or infrequent. Revised dutycycle, service normal, category A andCategory B, and Service, heavy.Delete magnet, lifting submersible

20-0.7 Added abnormal operating conditions, andservice special or infrequent. Revisedservice normal, category A and Category B,and Service, heavy

20-0.8 Revised

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20-2.3.9(a) and(b)(4)

revised

20-2.5 Revised entirely

20-3.2.1(a) Revised20-3.2.2 Added h-j20-3.3.7 Revised20-3.3.9(a)and(b)(5)

revised


20-4.2.2 Revise (a)(4)20-4.2.2 Added f-h20-4.3.6 Revised20-4.3.8(a) and(b)(5)

revised


20-5.2.2 Added f-h20-5.3.6 Revised20-5.3.8(a) revised20-5.5 Revised entirely

Figure 5 a-1 Added drawingFigure 7(a) Revised title

Figure 5(n) Added Beam Clamp

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1

TR #: 06-363Standard: B30.20Subject: ConstructionUpdated: June 2, 2006

Change Request Rationale:To incorporate design requirements in accordance with ASME BTH-1 Design of Below-The-Hook Lifting Devices.

Chapter 20-4Remotely OperatedLifting Magnets

20-4.2.2 Construction(a) General(I)(2)(3)

(4) The load bearing

structural components of aThe manufacturer shall verifythat Remotely operated liftingmagnets are designed by orunder the direct supervisionof a qualified person. Thedesign shall be in accordancewith ASME BTH-1 Design ofBelow-the-Hook Lifting

Devices and shall considerthe stresses resulting fromthe application of rated loadplus the weight of the liftingmagnet. shall be designed towithstand the stressesimposed by its rated load plusthe weight of the lifting

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2

magnet with a minimumdesign factor of three basedon yield strength of thematerial, and with stressranges that do not exceed thevalues given in ANSI/AWSD14.1 for the applicableconditions.

Remotely operated liftingmagnets shall be designed toASME BTH-1 DesignCategory B (static strengthcriteria) and the proper

Service Class (fatigue lifecriteria) selected for itsnumber of load cycles.

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TR #: 06-1568Standard: B30.20Subject: References

Updated: December 5, 2006

Section 20-0.8: References to Other Codes and Standards

Within the text, references are made to the following publications, copies of which may beobtained from the publishers as indicated. Copies of American National Standards may beobtained from the American National Standards Institute, Inc. (ANSI), 25 West 43rd Street, NewYork, NY 10036.

ANSI/AWS D14.1-97 2005, Specification for Welding Industrial and Mill Cranes and OtherMaterial Handling EquipmentPublisher: American Welding Society (AWS), 550 NW Le Jeune Road, Miami, FL 33126

ANSI/NFPA 70- 2002 2005, National Electrical CodePublisher: National Fire Protection Association (NFPA),1 Batterymarch Park, Quincy, MA 02269

ICS l-ICS 6, 1978, Industrial Control and SystemsPublisher: National Electrical Manufacturers Association(NEMA), 1300 North 17th Street, Rosslyn, VA 22209

ASME B30.9- 1996, Slings

ASME B30.10-1999, Hooks

ASME BTH-1 2005, Design of Below-the-Hook Lifting Devices

Specification for the Design, Fabrication and Erection of Structural Steel for Buildings, 8th EditionManual, 1980Publisher: American Institute of Steel Construction(AISC), 1 East Wacker Drive, Chicago, IL 60611

Rationale: To update references within the text of ASME B30.20.

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2

operation other than normal,heavy, or severe.

heavy service with abnormaloperating conditions

service, special or infrequent,service that involvesoperation other than normal,heavy, or severe.

service severe: that servicewhich involves normal or





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1

Proposed changes for ASME B-30.20-2009

16, Nov 2009

Chapter 20-2 Vacuum Lifting DevicesSECTION. 20-2.2: MARKING, CONSTRUCTION, AND INSTALLATION

20-2.2.1 Marking(a) Rated Load. The rated load of the lifter and each pad , maximum width, maximum length, and minimum thickness of the load shall be legibly marked on themain structure or on a tag attached to it where it is visible. If the vacuum lifting device has shutoff valves on individual pads or groups of pads the rated load of eachpad shall also be marked. This rating shall refer to the instruction manual for information relating to decreases in rating due to additional considerations.

20-2.2.2 Construction

(a) Vacuum Pad Rating. The ultimate pad capacity (UPC) shall be determined by the following formulas provided in ASME BTH-1:

(1) Inch-Pound MethodUPC = A(Hg/2)whereA = effective area of the vacuum pad, expressed in square inches, enclosed between the pad and the material when the pad is fully compressed against thematerial surface to be lifted

Hg= system vacuum expressed in inches of mercury. Reductions for altitude, efficiency, consistency, and wear of vacuum source shall be considered.2 = division constant for inch-pound methodEXAMPLE:Effective pad area = 100 in.2System vacuum = 24 in. HgUPC = 100(24/2) =1200 lb(2) Metric MethodUPC = A(Hg/73.6)whereA = effective area of the vacuum pad, expressed in square centimeters, enclosed between the pad and the material when the pad is fully compressed against thematerial surface to be liftedHg=system vacuum expressed in centimeters of mercury. Reductions for altitude, efficiency, consistency, and wear of vacuum source shall be considered.73.6 = division constant for metric methodEXAMPLE:Effective pad area =100 cm2System vacuum = 10 cm HgUPC =100(10/73.6) =13.6 kg

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2

Structural & MechanicalLifting Devices.20-1.5 - InstructionManuals

Operating instructions andmaintenance and parts

information shall befurnished by themanufacturer.

Vacuum lifting Devices

20-2.5 - Instruction ManualsOperating instructions andmaintenance and partsinformation shall be furnished

by the manufacturer.

In addition to operatinginstructions and maintenanceand parts information, themanual shall provide astatement of those factorsthat alter the vacuum lifter'slifting capacity and related

limitations.

Some of these factors arenoted below.

(a) Load rigidity. The rigiditymay cause the vacuumpads and the structure tobe loaded unevenly. Therigidity may varydepending on orientation.

(b) Load strength. Stressinduced by the loads ownweight and the stress fromthe vacuum pads may

Close Proximity LiftingMagnets

20-3.5 Instruction Manuals

Operating instructions andmaintenance and partsinformation shall be furnished

by the manufacturer.

In addition to operatinginstructions and maintenanceand partsinformation the manual shallprovide a statement of thosefactors that alter the liftingmagnets capacity and related

limitations.


(a) Load Thickness. Themagnetic flux flowing from alifting magnet into a loadincreases as the thickness ofthe load increases.Consequently, as a liftingmagnet's lifting capacity is afunction of this flux, the liftcapacity increases with loadthickness. For every liftingmagnet, there is a critical loadthickness where all of the lifting

Remotely Operated LiftingMagnets

20.4.5 - Instruction ManualsOperating instructions andmaintenance and partsinformation shall be furnished

by themanufacturer.

In addition to operatinginstructions and maintenanceand partsinformation, the manual shallprovide a statement of thosefactors that alter the lifting

magnets capacity and relatedlimitations.


(a) Load Thickness. Themagnetic flux flowing from alifting magnet into a loadincreases as the thickness ofthe load increases.Consequently, as a liftingmagnet's lifting capacity is afunction of this flux, the liftcapacity increases with loadthickness. For every liftingmagnet, there is a critical load

Scrap & Material HandlingGrapples

20-5.5 Instruction Manuals

Operating instructions andmaintenance and partsinformation shall be

furnished by themanufacturer.

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4

that can be reached may vary

minimum and becomes depen-dent upon the coefficient offriction of the lifting surface.

(f) Portion of Lifting MagnetFace in Contact With Load. Thefull face of the lifting magnetmust contact the load if thelifting magnet is to achievemaximum capabilities.

(g) Load Temperature. Thetemperature of the load cancause damage to the lifting

magnet and, if high enough,even change the magneticcharacteristics of the load.Consequently, the manualshall contain themanufacturer'srecommendations pertaining tooperation of the lifting magneton loads at temperaturesexceeding normal ambienttemperatures.

the lifting magnet reaches aminimum and becomes depen-dent upon the coefficient of

friction of the lifting surface.(f) Portion of Lifting Magnet

Face in Contact With Load. Thefull face of the lifting magnetmust contact the load if thelifting magnet is to achievemaximum capabilities.

(g) Load Temperature. Thetemperature of the load can

cause damage to the liftingmagnet and, if high enough,even change the magneticcharacteristics of the load.Consequently, the manualshall contain themanufacturer'srecommendations pertaining tooperation of the lifting magneton loads at temperaturesexceeding normal ambienttemperatures.

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Record# 08-521 (Ballot 08-426) (Definition:abnormal operating conditions)

Proposed Change 1

Structural and Mechanical lifting device

Section 20-0.3 Definitions f or Chapter 20-1abnormal operating conditions - environmental conditions that are unfavorable, harmful, or detrimental to or for the operation

of structural and mechanical lifting devices, such as excessively high or low ambient temperatures, exposure to adverseweather, corrosive fumes, dust-laden or moisture-laden atmospheres, and hazardous locations.

Proposed Change 2Vacuum Li fting DevicesSection 20-0.4 Definitions f or Chapter 20-2abnormal operating conditions - environmental conditions that are unfavorable, harmful, or detrimental to or for the operation

of vacuum lifting devices, such as excessively high or low ambient temperatures, exposure to adverse weather, corrosive

fumes, dust-laden or moisture-laden atmospheres, and hazardous locations.

Proposed Change 3Close Proximity Lifting MagnetsSection 20-0.5 Definitions f or Chapter 20-3abnormal operating conditions - environmental conditions that are unfavorable, harmful, or detrimental to or for the operation

of close proximity lifting magnets, such as excessively high or low ambient temperatures, exposure to adverse weather,corrosive fumes, dust-laden or moisture-laden atmospheres, and hazardous locations.

Proposed Change 4

Remotely Operated Lifting MagnetsSection 20-0.6 Definitions f or Chapter 20-4abnormal operating conditions - environmental conditions that are unfavorable, harmful, or detrimental to or for the operation

of remotely operated lifting magnets, such as excessively high or low ambient temperatures, exposure to adverse weather,corrosive fumes, dust-laden or moisture-laden atmospheres, and hazardous locations.

Proposed Change 5Scrap and Material Handling GrapplesSection 20-0.7 Definitions f or Chapter 20-5abnormal operating conditions - environmental conditions that are unfavorable, harmful, or detrimental to or for the operation

of scrap and material handling grapples, such as excessively high or low ambient temperatures, exposure to adverseweather, corrosive fumes, dust-laden or moisture-laden atmospheres, and hazardous locations.

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Record# 08-522 (Ballot 08-426) Construction

Proposed Change 1

Structural and Mechanical lifting device

Section 20-1.2: Marking, Construction, and Installation20-1.2.2 Construction.

(e) Slings, when employed, shall meet the requirements of ASME B30.9.(f) Hooks, when employed, shall meet the requirements of ASME B30.10.(g) Rigging hardware, when employed, shall meet the requirements of ASME B30.26.

Proposed Change 2Vacuum Lifting DevicesSection 20-2.2: Marking, Construction, and Installation20-2.2.2 Construction(h) Slings, when employed, shall meet the requirements of ASME B30.9.(i) Hooks, when employed, shall meet the requirements of ASME B30.10.(j) Rigging hardware, when employed, shall meet the requirements of ASME B30.26.

Proposed Change 3Close Proximity Lifting MagnetsSection 20-3.2: Marking, Construction, and Installation20-3.2.2 Construction

(h) Slings, when employed, shall meet the requirements of ASME B30.9.(i) Hooks, when employed, shall meet the requirements of ASME B30.10.(j) Rigging hardware, when employed, shall meet the requirements of ASME B30.26.

Proposed Change 4Remotely Operated Lifting MagnetsSection 20-4.2: Marking, Construction, and Instal lation20-4.2.2 Construction(f) Slings, when employed, shall meet the requirements of ASME B30.9.(g) Hooks, when employed, shall meet the requirements of ASME B30.10.

(h) Rigging hardware, when employed, shall meet the requirements of ASME B30.26.

Proposed Change 5Material Handling GrapplesSection 20-5.2 - Marking, Construction, and Installation

20-5.2.2 Construction(f) Slings, when employed, shall meet the requirements of ASME B30.9.(g) Hooks, when employed, shall meet the requirements of ASME B30.10.(h) Rigging hardware, when employed, shall meet the requirements of ASME B30.26.

Proposed Change 6Section 20-0.8 References To Other Codes And Standards

ASME B30.26-2008, Rigging Hardware

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Record# 08-523 (Ballot 08-426) Chapter 20-0 Scope, Definitions, and References

1

Chapter 20-0 Scope, Definitions, and ReferencesSection 20-0.2 Definitions - General

Section 20-0.8: References To Other Codes And StandardsASME HST-1 Performance Standard for Electric Chain Hoists

Structural andMechanicalLifting Devices

Section 20-0.3 Definitions for Chapter20-1

(for ASME BTH-1 DesignCategory A lifters)

service, normal:that servicewhich involves operation with

various weights within the ratedload limit with not more than 4operations above 65% of therated load limit per 24 hourperiod.

(for ASME BTH-1 DesignCategory B lifters)

service, normal:- that servicewhich involves operation with

various weights within the ratedload limit, averaging less than65% of rated load limit.

Vacuum Lifting DevicesSection 20-0.4 Definitions for

Chapter 20-2

(for ASME BTH-1 DesignCategory A lifters)

service, normal:that servicewhich involves operation with

various weights within therated load limit with not morethan 4 operations above 65%of the rated load limit per 24hour period.


service, normal:- that servicewhich involves operation withvarious weights within therated load limit, averaging lessthan 65% of rated load limit.

Close Proximity LiftingMagnets

Section 20-0.5 Definitions forChapter 20-3


service, normal:- that

service which involvesoperation with various weightswithin the rated load limit,averaging less than 65% ofrated load (capacity) with themagnet operating at, or below,the rated duty cycle over oneshift (8 hr.)

Remotely Operated LiftingMagnets



service, normal:- that

service which involvesoperation with various weightswithin the rated load limit,averaging less than 65% ofrated load (capacity) with themagnet operating at, or below,the rated duty cycle over oneshift (8 hr.)

Scrap and Material HandlingGrapples


(for ASME BTH-1 DesignCategory B lifters,)

service, normal:- that servicewhich involves operation withvarious weights within therated load limit, averaging lessthan 65% of rated load.

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Record# 08-524 (Ballot 08-426) Instruction ManualsThese are revisions to the previously approved TR-07-2045

Vacuum lifting Devices

Section 20-2.5 - Instruction ManualsThe manufacturer shall provide operating instructions, and maintenance and parts information. Inaddition, the manual shall also provide a statement of those factors that alter the vacuum lifter'slifting capacity and related limitations. Several factors known to affect the vacuum lifter's liftingcapacity are noted below.

Close Proximity Lifting MagnetsSection 20-3.5 Instruction ManualsThe manufacturer shall provide operating instructions, and maintenance and parts information. In

addition , the manual shall also provide a statement of those factors that alter the magnets liftingcapacity and related limitations. Several factors known to affect the magnets lifting capacity arenoted below.

Remotely Operated Lifting MagnetsSection 20-4.5 - Instruction ManualsThe manufacturer shall provide operating instructions, and maintenance and parts information. Inaddition, the manual shall also provide a statement of those factors that alter the magnets lifting

capacity and related limitations. Several factors known to affect the magnets lifting capacity arenoted below.

Vacuum lifting DevicesSection 20-2.5 - Instruction Manuals(e) Angle of the Load. The effect of the coefficient of frictionbetween the load and vacuum padbecomes significant when the load is not horizontal

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Record# 08-525 (Ballot 08-426) Markings

Chapter 20-1 Structural andMechanical Lifting DevicesSECTION 20-1.2: MARKING, CONSTRUCTION, AND INSTALLATION20-1.2.1 Marking(a) Rated Load. The rated load of the lifting device shall be legibly marked on its the mainstructure or on a tag attached to its main structure it where it is visible. If the lifting device is madeup of several lifters, each detachable from the group, these lifters shall also be marked with theirindividual rated loads.

Chapter 20-2 Vacuum Lifting DevicesSECTION. 20-2.2: MARKING, CONSTRUCTION, AND INSTALLATION

20-2.2.1 Marking(a) Rated Load. The rated load of the lifter and each pad shall be legibly marked on its the mainstructure or on a tag attached to its main structure it where it is visible. This marking rating shallrefer to the instruction manual for information relating to decreases in rating due to additionalconsiderations

Chapter 20-3 Close Proximity Lifting MagnetsSECTION 20-3.2: MARKING. CONSTRUCTION. AND INSTALLATION20-3.2.1 Marking

(a) Rated Load (Capacity)(1) General Application Lifting Magnets. The rated load (capacity) of the lifting magnet shall belegibly marked on the lifting magnet or on a tag attached to the lifting magnetit where it isvisible.This marking rating shall refer to the instruction manual for information relating to decreases inrating due to the load surface condition, thickness, percentage of contact with the lifting magnet,temperature, metallurgical composition, and deflection.(2) Specified Application Lifting Magnets. The rated load (capacity) of the lifting magnet shall belegibly marked on the lifting magnet or on a tag attached to the lifting magnet it where it isvisible. This marking rating shall refer to the specific loads for which this rating applies.

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Record# 08-526 (Ballot 08-426) Repairs

Proposed Change 1

Structural and Mechanical lif ting device

Section 20-1.3: Inspection, Testing, and Maintenance20-1.3.7 Repairs

Any indications of damage disclosed by the inspection requirements of Section 20-1.3 shall be correctedaccording to the procedures outlined in para. 20-1.3.9 before operation of the lifter is resumed.Repairs ofslings, (ASME B30.9), hooks, (ASME B30.10), rigging hardware (ASME B30.26), or other special devicesshall comply with repairrequirements in the applicable volumes or standards.

Proposed Change 2

Vacuum Lifting DevicesSection 20-2.3: Inspection, Testing, and Maintenance20-2.3.7 Repairs

Any indications of damage disclosed by the inspection requirements of Section 20-2.3 shall be correctedaccording to the procedures outlined in para. 20-2.3.9 before operation of the vacuum lifter is resumed.Repairs ofslings, (ASME B30.9), hooks, (ASME B30.10), rigging hardware (ASME B30.26), or other special devicesshall comply with repairrequirements in the applicable volumes or standards.

Proposed Change 3Close Proximity Lifting MagnetsSection 20-3.3: Inspection, Testing, and Maintenance20-3.3.7 Repairs

Any indications of damage disclosed by the inspection requirements of Section 20-3.3 shall be correctedaccording to the procedures outlined in para. 20-3.3.9 before operation of the lifting magnet is resumed.Repairs ofslings, (ASME B30.9), hooks, (ASME B30.10), rigging hardware (ASME B30.26), or other special devicesshall comply with repairrequirements in the applicable volumes or standards.

Proposed Change 4Remotely Operated Lifting MagnetsSection 20-4.3: Inspection, Testing, and Maintenance20-4.3.6 Repairs

Any indications of damage disclosed by the inspection requirements of Section 20-4.3 shall be correctedaccording to the procedures outlined in para. 20-4.3.8 before operation of the lifting magnet is resumed.Repairs ofslings, (ASME B30.9), hooks, (ASME B30.10), rigging hardware (ASME B30.26), or other special devicesshall comply with repairrequirements in the applicable volumes or standards.

Proposed Change 5Material Handling GrapplesSection 20-5.3: Inspection, Testing, and Maintenance20-5 3 6 Repairs

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Record #: 08-955Standard: B30.20Subject: Definitions

Updated: July 28, 2008

Delete the following definitions:

from SECTION 20-0.2: Definitions General.

designated load: the specified size, shape, and weight of material to be lifted.

Rationale:Not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices

from Section 20-0.3: Definitions For Chapter 20-1

chain/hand wheel: a device for manually operating a lifter.

gripping force: the force the lifting device exerts on the load.

Rationale: Not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-1.


breakaway force: the external force that is required to separate the vacuum pad or vacuum lifting device from the

load when applied perpendicular to the attachment surface.high-temperature surface: a condition where the surface to which the vacuum pad (or pads) is attached is above

250F (120C).

low-temperature service: a condition where the surface to which the vacuum pad (or pads) is attached is below

0F (

18C).

peel off: a prying action that takes place when deflection of an overhanging load exceeds the compensating

ability of the vacuum pad or vacuum lifting device, resulting in loss of load.

shear breakaway force: the external force that is required to separate or slide the vacuum pad or vacuum lifting

device on the load when the force is applied parallel to the attached load surface.

Rationale:Not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-2.


magnet, lifting, submersible: a special lifting magnet that has been designed to be immersed in liquid.

Rationale:Not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-4.

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Record#: 08-960Standard: B30.20Subject: Definitions

Updated: June 26, 2008

Change the following definitions in Section 20-0.4: Definitions For Chapter 20-2

Horizontalsurface lift: a condition where the surface to which the vacuum pad (or pads) is attached is in a

horizontal plane.

Rationale:This definition is for Horizontal surface liftas used withinChapter 20-2. Horizontal liftis not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-2.

verticalsurface lift: a condition where the surface to which a vacuum pad is attached is in a vertical plane.

Rationale:This definition is for Vertical surface liftas used withinChapter 20-2. Vertical liftis not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-2.

sealing ring (seal): that part of the vacuum pad which forms the seal of the vacuum chamber between the

vacuum pad body or vacuum lifting device and the attached material.

Rationale:This definition is for seal ringorsealas used withinChapter 20-2. Sealing ringis not usedwithin the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-2.

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Updated: November 17, 2008 addition of comma per September 2008 Minutes.

Change the following definitions in SECTION 20-0.4: Definitions For Chapter 20-2

vacuum lifter: a below-the-hook lifting device for lifting and transporting loads in a fixed attitude using a

holding force by means of vacuum (see Fig. 6).

Rationale:The current definitions of vacuum lifter and vacuum manipulator in B30.20 are contradictory. A

vacuum manipulator is defined as a vacuum lifter capable of repositioning the load while suspended, but avacuum lifter is by definition used in a fixed attitude. This proposal is to make vacuum lifter the all-encompassing term, and vacuum manipulator a sub-set of vacuum lifter. This change will also make B30.20and the 2008 edition of BTH definitions consistent.

vacuum reservoir: the evacuated portion of the vacuum system, whose which functionsis to compensate for leakageinto the vacuum system or to provide a vacuum reserve in the event of vacuum generator failure.

Rationale:A grammatical correction.

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Change the following definitions in Section 20-0.5: Definitions For Chapter 20-3 and Section 20-0.6:Definitions For Chapter 20-4

service, heavyduty: that service which involves operation within the rated load limit that exceeds normal service.

Rationale:This definition is for service, heavy as used withinChapter 20-3 and Chapter 20-4. service,heavy duty is not used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices Chapter 20-3

or Chapter 20-4.

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Updated: November 17, 2008 adding editorial change from Sept 2008 mtg Minutes.

Change the following description in Fig. 7, sketch (a) for Chapter 20-3

(a)Close ProximityOperatedBattery PoweredLifting Electromagnet

Rationale: This figure is Labeled Close Proximity Operated Lifting Electromagnet. It should be CloseProximity Operated Battery Powered Electromagnet Lifting Magnet.

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Record#: 08-964Standard: B30.20Subject: References


Change the following reference dates in Chapter 20-0 Section 20-0.8: References To Other Codesand Standards

ASME B30.9-2006, Slings

ASME B30.10-2005Hooks

ASME BTH-1-2008,Design ofBelow-The-Hook Lifting Devices

Rationale:To update references.

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Record#: 08-1660AStandard: B30.20Subject: Definitions

Updated: May 2009

Proposal # 1:Change the following in SECTION 20-0.2: Definitions General.

below-the-hook lifting device: a device used for attaching loads to a hoist. The device may

contain components such as slings, hooks, and rigging hardware, and lifting attachmentsaddressed by other ASME B30 volumes or other standards.

Rationale: To enhance the definition of a below-the-hook lifting device.

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Record#: 08-1661Standard: B30.20Subject: Scope

Updated: November 17, 2008

Change the following in SECTION 20-0.1: SCOPE OF ASME B30.20 SECTION 20-0.1:SCOPE OF ASME B30.20Volume B30.20 includes provisions that apply to the marking, construction, installation,

inspection, testing, maintenance, and operation of below-the-hook lifting devices, otherthan slings components addressed by other ASME B30 volumes or other standards, used

for attaching loads to a hoist.

Rationale: To more completely define the exceptions.

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Record#: 08-1662AStandard: B30.20Subject: DefinitionsUpdated: January 20, 2009

Add the following definitions in Chapter 20-0 Definitions Section 20-0.2: Definitions General

repair: the process of reconditioning, renewal or replacement of parts, components, and/or subsystems to a condition equal to the original manufacturers specifications for thepurpose of ensuring performance in accordance with the applicable requirements.

Rationale:To clarify the meaning of repair as used within the text of ASME B30.20-2006 Below-The-Hook Lifting Devices.

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Record#: (08-1664A)Standard: B30.20Subject: DefinitionsUpdated: January 20, 2009

Add the following definitions in Chapter 20-0 Definitions Section 20-0.2: Definitions General

Alteration:a physical change, addition, or deletion that modifies the original design, or intended functioning, of the below-the-hook lifting device.

altered see alteration

modification see alteration

modified see alteration

Rationale: To clarify the meaning of alteration/altered and modification/modified as used within the text of ASME B30.20-2006 Below-The-Hook Lifting

Devices.

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Record#: 08-1665Standard: B30.20Subject: Figure 5

Updated: November 17, 2008

Proposal #6:Add the following illustration and (n) Beam Clamp to Fig. 5 Load-Supporting:

(n) Beam Clamp

Rationale: To illustrate and label another type of Load supporting lifter covered by ASME B30.20section 1.

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(c) Tests of altered or, repaired, or modified lifters maybe limited to the provisionsaffected by the alterationorrepair, or modification, asdetermined by a qualifiedperson with guidance from themanufacturer.

(b) Altered or, repaired, ormodified vacuum liftingdevices shall be tested by, orunder the direction of, aqualified person. This test maybe limited to the provisionsaffected by the alteration orrepair, or modification,as determined by a qualifiedperson with guidance fromthe manufacturer.

(d) Altered or, repaired, ormodified lifting magnetsshall be tested by, or under thedirection of, a qualifiedperson. This test may be limitedto the provisionsaffected by the alteration or,repair, or modification, asdetermined by a qualified personwith guidance fromthe manufacturer.

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(5) Dated records of repairs andreplacements should be made.



available.



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Record#: 09-700Standard: B30.20Subject: Maintenance Section Editorial corrections to be presented at the May 2009 meeting.Updated: April 24, 2009

Rationale: To fix the incorrect references to the Periodic Inspection paragraphs in Chapters 20-2, 20-3 & 20-4.

Chapter 20-1Structural andMechanical

Lifting Devices

20-1.3.9 Maintenance(a)(4) After adjustments and repairshave been made, the lifter shallnot be returned to service until ithas been inspected according topara. 20-1.3.4.

(20-1.3.4 Periodic Inspection)

Chapter 20-2Vacuum Lifting Devices

20-2.3.9 Maintenance(a)(4) After adjustments and repairshave been made, the vacuumlifting device shall not be returnedto service until it has beeninspected according to para. 20-2.3.3. 20-2.3.4.


Chapter 20-3Close Proximity Lifting

Magnets

20-3.3.9 Maintenance(a)(4) After adjustments and repairshave been made, the liftingmagnet shall not be returned toservice until it has beeninspected according to para. 20-3.3.4(c). 20-3.3.4.


Chapter 20-4Remotely Operated Lifting

Magnets

20-4.3.8 Maintenance(a)(4) After adjustments and repairshave been made, the liftingmagnet shall not be returned toservice until it has been inspectedaccording to para. 20-4.3.1(c).20-4.3.3.


Chapter 20-5Scrap and Material Handling

Grapples

20-5.3.8 Maintenance(a)(4) After adjustments and repairshave been made, the grappleshall not be returned to serviceuntil it has been inspectedaccording to para. 20-5.3.3.


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