This article is Part 5 of a 5-part blog series that will cover what professional riggers should consider when performing an in-depth alloy chain sling inspection. Today, we’ll discuss OSHA chain sling inspection regulations and guidelines.

Chain SlingSince first published on July 27, 1975, the OSHA Chain Sling Inspection section has undergone very few changes. These regulations have and continue to serve as a comprehensive guide for those responsible for chain sling inspection.

Specifically, the applicable sections of the Code of Federal Regulations (29 CFR 1910.184) include:

1910.184(d) Inspections
Each day before being used, the sling and all fastenings and attachments shall be inspected for damage or defects by a competent person designated by the employer. Additional inspections shall be performed during sling use, where service conditions warrant. Damaged or defective slings shall be immediately removed from service.

1910.184(e) Alloy steel chain slings

1910.184 (e)(1) Sling identification
Alloy steel chain slings shall have permanently affixed durable identification stating size, grade, rated capacity, and reach.

1910.184(e)(2) Attachments

  • 1910.184(e)(2)(i)
    Hooks, rings, oblong links, pear shaped links, welded or mechanical coupling links or other attachments shall have a rated capacity at least equal to that of the alloy steel chain with which they are used or the sling shall not be used in excess of the rated capacity of the weakest component.
  • 1910.184(e)(2)(ii)
    Makeshift links or fasteners formed from bolts or rods, or other such attachments, shall not be used.

1910.184(e)(3) Inspections

  • 1910.184(e)(3)(i)
    In addition to the inspection required by paragraph (d) of this section, a thorough periodic inspection of alloy steel chain slings in use shall be made on a regular basis, to be determined on the basis of (A) frequency of sling use; (B) severity of service conditions; (C) nature of lifts being made; and (D) experience gained on the service life of slings used in similar circumstances. Such inspections shall in no event be at intervals greater than once every 12 months.
  • 1910.184(e)(3)(ii)
    The employer shall make and maintain a record of the most recent month in which each alloy steel chain sling was thoroughly inspected, and shall make such record available for examination.
  • 1910.184(e)(3)(iii)
    The thorough inspection of alloy steel chain slings shall be performed by a competent person designated by the employer, and shall include a thorough inspection for wear, defective welds, deformation and increase in length. Where such defects or deterioration are present, the sling shall be immediately removed from service.

Please note that while the requirements under (d) for daily inspections are not explicit as to scope or maintenance of records, it is possible that individual OSHA inspectors may have different views on conformity. However, the minimum 12-month interval inspections required under (e) call for thorough inspection and written records. It is this thorough type of inspection that the procedures recommended in our Rigging Catalog and CMCO Training Classes are designed to satisfy.

Of course, the fundamentals are equally applicable to the more cursory daily inspections made by riggers, users or inspectors (individuals deemed a “competent person”) and will enable them to fulfill their responsibility efficiently.

For more information:

 

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Daniel, a salesperson for a Columbus McKinnon Channel Partner and recent safety webinar attendee, asks:

“On my overhead crane, the rail to flange contact is opposite end-to-end of the end truck. On one end truck, the drive wheel to the flange is on the inside and on the other wheel, the contact is on the outside. What are your recommendations in this situation?”

Skewing 1B

Tom Reardon, Columbus McKinnon Technical Instructor and Safety Webinar Presenter, answers:

I gather from the question the crane is traveling in an orientation similar to the above example. This situation is not commonly caused by the runway. It is most often related to the crane.

If the crane is an A1 “type” drive configuration (see graphic below) some of the possible causes are:

  • Drive shaft couplings are defective/sloppy/loose
  • Weight/load is being carried at one extreme or the other on the bridge (trolley to the left or right of bridge)
  • Crane bridge is out of square
  • End trucks are bent or warped
  • Drive wheels are not “truly parallel.” This means the perpendicular center line of the left side drive wheel is not the same line as the perpendicular center line of the right side drive wheel.
  • Drive wheel diameters are not matched within CMAA Specification #70

If the crane is an A4 “type” drive configuration some of the possible causes are:

  • Weight/load is being carried at one extreme or the other on the bridge (trolley to the left or right of bridge)
  • Crane bridge is out of square
  • End trucks are bent or warped
  • Drive wheels are not “truly parallel.” This means the perpendicular center line of the left side drive wheel is not the same line as the perpendicular center line of the right side drive wheel
  • Drive wheel diameters are not matched within CMAA Specification #70
  • Bridge drive motors are not producing same output speed, starting torque, etc.

Skewing 2A

 

In case you missed our Safety Webinar “Identifying Tracking Problems with Cranes,” you can view it here.

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In-Depth Alloy Chain Sling Inspection Part 4: Stretch and Chain Elongation

June 4, 2015





This article is Part 4 of a 5-part blog series that will cover what professional riggers should consider when performing an in-depth alloy chain sling inspection. Today, we’ll discuss stretch and chain elongation. A visual link-by-link inspection is the best way to detect dangerously stretched alloy chain links. Reach should also be measured from the […]

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Pfaff-silberblau Products Perform in “The Miracle of Bern”

May 21, 2015





Columbus McKinnon recently supplied Pfaff-silberblau brand products for a new musical venue in Hamburg, Germany. Stage Entertainment constructed the ultra-modern performance venue, “Theater an der Elbe,” capable of holding more than 1,800 spectators for the production of “The Miracle of Bern.” Stage Entertainment commissioned Columbus McKinnon Engineered Products GmbH, based in Kissing, for the design, […]

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In-Depth Alloy Chain Sling Inspection Part 3: Wear and Corrosion

May 14, 2015





This article is Part 3 of a 5-part blog series that will cover what professional riggers should consider when performing an in-depth alloy chain sling inspection. Today, we’ll discuss wear and corrosion. When used in rigorous material handling applications, chain can easily become worn or corroded. It is important to inspect chain for defects on […]

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Understanding the Difference between Chain Grades and How They’re Used

May 7, 2015

Chain has been around for over a thousand years. It is one of the most versatile and reliable ways to lift, tension and tie down materials in a variety of applications. In the past, people would use any type of chain to lift something, tie down a load or tow a vehicle. Proper inspection, safety […]

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#rigsafe: Promoting Safe Rigging in the Entertainment Industry

April 30, 2015

On Friday, April 24th we celebrated #RigSafe day, an initiative started by the United States Institute for Theatre Technology (USITT) to promote safe rigging in the entertainment industry. USITT asked companies to join the initiative by sharing rigging safety tips on social media under the hashtag #rigsafe. Columbus McKinnon participated in the event, tweeting our […]

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Unique Uses for CM Industrial Rigging Equipment

April 16, 2015





As a manufacturing and engineering company, Columbus McKinnon places high value in STEM education – education encouraging students to pursue careers in Science, Technology, Engineering and Math. But, in recent years, STEM education has evolved into STEAM education, which aims to connect art to these areas of study to demonstrate how industrial products can contribute […]

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In-Depth Alloy Chain Sling Inspection Part 2: Nicks and Gouges

April 10, 2015





This article is Part 2 of a 5-part blog series that will cover what professional riggers should consider when performing an in-depth alloy chain sling inspection. Today, we’ll discuss nicks and gouges. When chain is used to lift, pull or secure materials, the outside surface of the links can come in contact with foreign objects […]

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Get Genuine Columbus McKinnon Hoist Parts with the New Parts Star Program

April 1, 2015





Ordering replacement parts for CM, Yale and Shaw-Box brand electric chain and wire rope hoists is easier, faster and more economical than ever with Parts Star™ by Columbus McKinnon. The Parts Star™ replacement parts program ensures customers that they’re getting authentic Columbus McKinnon parts — the parts designed to fit the hoist’s exact specifications, maintain warranty […]

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