Posted by Mike Parnell on Thu, Feb 09, 2012 @ 03:31 PM
Over the last 5 year we have been introduced to the idea of having “directors” involved in the crane and rigging world. To some extent, we have always had them by virtue of other titles such as lift foreman, hoisting supervisor, crane and rigging superintendent and the like. In the development of new OSHA regulations and ASME standards, we are seeing these roles unfold with more definition and a clearer outline of responsibilities.
Let’s get a broad perspective of the two most recent titles and then we will drill down into the last one to gain a deeper understanding of its tasks and responsibilities. The two under discussion are the “Lift Director” and the “Assembly/Disassembly Director”.
The Lift Director is the person who has a good working knowledge and understanding of LHE’s (Load Handling Equipment such as cranes, gantry systems, etc.), rigging, and safe load handling procedures. He is very competent and knows the right questions to ask during the lift planning phase. He understands the roles and responsibilities of the site supervisor, the LHE operator, user and owner. The Lift Director can build and implement a load moving plan incorporating the proper field crews which include riggers, signalpersons, and associated personnel. He knows who to tap for information concerning engineering concerns, regulatory requirements, emergency action plans, equipment specialists and vendors. The Lift Director keeps the 30,000 ft. view of the project at hand, yet has the capacity to get involved in any single detail using his resources or personal knowledge. For more detail about the Lift Director’s roles and responsibilities, obtain a copy of ASME B30.5-2007 Mobile and Locomotive Cranes available at www.asme.org.
The Assembly/Disassembly Director title was introduced to us through the recently released 29CFR1926.1400 Construction Crane code issued by OSHA in 2010. In practice, this person has existed for many years, but may not have been given the official title “A/D Director”. His focus is the proper assembling or disassembling of a lattice boom type crane (mobile, tower, etc.) and/or the jibs and extensions of hydraulic boom type cranes. It is already apparent that the industry is borrowing this title and assignment callout for folks charged with A/D work related to telescopic hydraulic gantry systems, strand jack systems and other intricate load handling equipment. The A/D process is somewhat high risk and has resulted in numerous injuries/deaths, hence the attention paid by OSHA to significantly expand the description of job tasks and safety procedures related to this subject. As a general rule, the A/D Director would report to the Lift Director. The A/D Director is delivering one primary element of an overall project effort, specifically to get the LHE into its proper operating state, or potentially removing it after its need no longer exists.
Boiled down, the A/D Director needs to be knowledgeable and competent in four primary areas.
1) He needs to have a full working knowledge of the crane manufacturer’s prohibitions, warnings and cautions relative to assembling or disassembling the specific type crane in question.
2) He needs to be fully familiar with the instructions and sequence of the crane’s assembly/disassembly per the manufacturer’s instructions or those provided by a qualified person (one judged to have equal knowledge of the process as compared to the manufacturer).
3) He needs to have a complete understanding of the corporate (LHE owner’s) guidelines and requirements associated with A/D work. This may include, but not be limited to safety elements like fall arrest, barricading, traffic control, power line issues, PPE, component rigging, blocking/cribbing, use of hand tools, and the like.
4) He must have knowledge and competency in regards to the OSHA requirements as called out in 29CFR1926.1400, specifically .1403-.1407 and the referenced items in .1401, .1402, .1412, .1417, .1434, Appendix B and .251. (See www.osha.gov and search 29CFR1926.1400 for details.)
The general approach for an A/D Director to take when assembling a mobile crane with a lattice boom is not overly complicated, but it does require a sequential approach in order to be successful. He needs to understand the “assignment” which would include the targeted assembly area and the final boom configuration upon completion. After having become fully knowledgeable about the OSHA requirements and the corporate guidelines, he needs to thoroughly understand the manufacturer’s prohibitions and the assembly sequence. If he has questions about the A/D project, he needs to get clarification from the manufacturer/qualified person or other appropriate parties before starting. He will be leading others in the process, so it is critical that he has the game plan in his mind and properly described on paper, before moving forward.
He should gather the team (crane operator, qualified rigger/signal person, and other helpers as needed) and review the “plan”. The team meeting should include a review of the manufacturer’s prohibitions, cautions and warnings, the actual assembly sequence, the corporate A/D guidelines, and the precautions and instructions offered through the OSHA regulations 1926.1403-.1407, et.al.). This pre-meeting should address any concerns by team members and serve as a point in time to qualify the assembly area as regards to obstructions, power lines, ground conditions, traffic issues and the like.
A checklist is handy when it comes to two significant areas, namely the sequence of assembly and a list of tools, equipment and safety items necessary for the team members. Also detailed on the checklist are items regarding the safety of any non-associated parties, such as other site employees or the general public. The A/D Director will be the ring leader of this event and is responsible for the performance of the team according to the plan and instructions.
Three goals must be achieved during an A/D project, such as a mobile crane’s lattice boom assembly.
1) The work practices of the team must be executed properly. The results of which are that no one is under the boom section(s) which is not supported by blocking. At times the boom will be under compression during the process, with pins being driven in to join boom sections. Pendant lines will be attached and the boom being assembled may be raised or adjusted in order to add a new section. The collapsing (uncontrolled hinging) of a boom section during the assembly process while aligning for connection can be deadly. So coordination of the ground personnel and the operator is paramount in achieving an incident-free assembly project.
2) The technical elements of the assembly project are crucial for the crane to be able to operate within the manufacturer’s parameters. Installation of the prescribed boom sections in the proper order is very important. The final crane configuration must be correct so that the crane has the integrity to perform as designed.
3) Whether installing counterweights, the gantry or mast, or the boom and pendant lines, they all have to be handled properly to ensure no damage occurs to the components. Additionally, the rigging must be correct as to selection, method and capacity, and must pass a pre-use inspection.
The A/D Director needs to have certain skills in addition to the “knowledge areas” described above in order to properly perform his duties. He should have experience in mechanical assembly work, while having a disciplined mind that commits to following specified plans. He should have a certain level of maturity to execute according to a well-organized plan and have an overriding aversion to “short-cuts”. He needs to be able to lead others by speech and action. He should be able to motivate the team to stick to the procedures at-hand, while allowing anyone to give an “all-stop” command should anything arise that deviates from the plan. The A/D Director must be able to “visualize” how a proposed deviation might impact the overall success of the assignment; i.e. using a 4 lb. hammer instead of a 2 lb. one might result in a negligible difference, except that the rigger has to swing it a little harder to drive a pin into place. On the other hand, deciding to connect boom pins out of sequence could have catastrophic results, and the A/D Director needs to anticipate the consequences and respond accordingly.
At the end of the day, the A/D Director has a focused task consisting of a thousand details. His crew size may be much smaller than the one that reports to the Lift Director, but no less important when it comes to the associated risks. In some ways, the A/D Director’s job can be deemed “tougher” because of the immediate hazards associated with A/D work. However, with the right training, experience, knowledge and preparation, either job can be handled with competency and success.
Happy trails to my crane and rigging friends.
Mike Parnell
President
ITI – Field Services
Posted by Mike Parnell on Tue, Nov 15, 2011 @ 01:07 PM
The workshop below uses the Journeyman Rigger's Reference Card panel 6, to help provide the solution.
The area of a circle can be calculated with either (Pi x radius squared) or (dia. x dia. x .80), and both arrive at very similar values for Area of a Circle. For riggers in the field, we use the dxdx.80 method since it is faster and simpler.
If circumference is desired, a person can use Pi x diameter, officially 3.1416 x d, or for quick figuring in the field, 3.2 x diameter.
Happy trails to my crane and rigging friends.
Mike Parnell
President
ITI – Field Services
Posted by Mike Parnell on Thu, Nov 10, 2011 @ 02:11 PM
Our industry depends on cranes, rigging and other load handling equipment. The big key to success is having folks who are competent, qualified and capable at multiple levels to be able to safely and effectively get work done.
If you have a solid knowledge base in the rudimentary operations and practices of load handling, you should get ready for the next step. Why? You are the future of our industry. You may well be appointed to the next level of oversight that incorporates the use of the equipment and the procedures related to project execution.
If you are being considered or have been appointed as a foreman or supervisor to manage any size crew who uses cranes and rigging, you will want to further your education in the subjects of your profession. In the 1968 book called “Peter Principle”, by Laurence J. Peter (1919-1990), Mr. Peter observed that in some cases, people tend to be promoted until they reach their level of incompetence. Their advancement to a new job is based on their previous successes that demanded a limited set of skills. Their new assignment may incorporate some of their existing skills but also demand competency in areas that they may not be prepared for. Don’t be a living example of the Peter Principle.
Take a pro-active approach today and get the proper tools for your new and expanding assignment. These tools involve skills and knowledge of the subject matter. In our world that may mean exposure to a few subjects like:
1. Advanced Rigging Inspection and Trouble Shooting
2. Intermediate and Advanced Rigging
3. Mobile Crane Operations and Load Chart Interpretation
4. Lift Director Responsibilities
5. Lift Planning
6. Accident Investigation
7. Crane and Rigging Audits
8. Crane Inspections
9. Safety Procedures, LOTO, PPE and HazMat
10. Crane Assembly/Disassembly
11. Contingency Planning
12. Emergency Response
Others in your organization are depending on your current and future work skills and operational knowledge. Make sure your competency grows with your assignments. If you are ready for the next step, visit our website (www.iti.com) and see which of our programs can help you avoid the Peter Principle.
Happy trails,
Mike Parnell
P.S. Believe me when I tell you that at ITI, all of our trainers and consultants are asked to live by an axiom that reflects this article; “Be a student first and a trainer second”. I get up each morning and wonder what will I learn today? What questions can I ask, who can give me insight that I don’t have, and what situation can I learn from, that will make me better prepared for tomorrow? Would you forgive a seasoned veteran (old man) for being a little preachy?
Proverbs 4:7 Wisdom is the principal thing; therefore get wisdom: and with all thy getting get understanding.
Posted by Mike Parnell on Mon, Jan 24, 2011 @ 11:13 AM
Using portions of ITI's Journeyman Rigger's Reference Card, determine the total force required to slide the steel based load across the concrete floor to its landing spot. Identify the amount of tension which will be applied to the following items:
Point 1, shackle deadend = _____ lbs.
Point 2, snatch block = _____ lbs.
Point 3, snatch block = _____ lbs.
Point 4, snatch block = _____ lbs.
Point 2 + 4 at column = _____ lbs.
Point 5, snatch block = _____ lbs.
Point 6, snatch block = _____ lbs.
Point 7, snatch block = _____ lbs.
Point 8, floor winch = _____ lbs.
*NOTE : For the purpose of this exercise, assume frictionless sheaves.
Journeyman Rigger's Reference Card
Happy trails to all my crane and rigging friends,
Mike Parnell
ITI-Field Services
P.S. This article was originally published in The Professional Rigger Newsletter - Load Skidding.
Answers:
Posted by Industrial Training International on Mon, Jan 17, 2011 @ 10:32 AM
When a load is being rigged for moving with a mobile crane, the crane operator can quickly estimate the slings and shackles required for the lift.
Below you'll notice Panel 20 of ITI's Mobile Crane Operator Reference Card. This panel was designed to help approximate the minimum rigging necessary, based on tension or load weight. Standard rigging cards provide more exact data, but for estimation from the operator's perspective, this will get close without being under-rigged.
Workshop Assignment: Double check the selections made by the rigging crew to see if they have rigged the load with sufficiently rated rigging equipment. (Answers below)
1. What are the sling/shackle descriptions required to lift the load at right?
A. If wire rope sling, then the wire rope diameter should be ____".
B. If roundsling, then use a(n) ________.
C. If alloy chain sling, then the chain size should be ____".
D. The SPA shackle attached at the load should be ____".
2. Based on the slings and shackles assembled by the riggers for the following loads, indicate if the rigging equipment is being used within or beyond its rated capacity.
Mobile Crane Operator's Reference Card - Panel 20
Happy trails to all my crane and rigging friends,
Mike Parnell
ITI-Field Services
P.S. This article was originally published in The Professional Rigger Newsletter, you can download this newsletter here - Rigging for the Mobile Crane Operator.
Answers:
Posted by Industrial Training International on Mon, Jan 10, 2011 @ 11:37 AM
To upright a load, precautions must be taken to avoid overloading any equipment, whether crane(s) or rigging gear. In this workshop we are given the load's weight of 27,000 lbs. The available lifting points have been designed into the load (concrete column with steel anchored lugs). The precast column must be picked and turned in midair. (If the column was lifted only at the double-lug end, we might cause excessive bending and buckling.)
The first step is to determine the distribution of weight. When the column is suspended in a horizontal position, how much will be carried by the main hoist and how much by the auxiliary hoist? After we determine the load at each hoist, then we can select the rigging which has sufficient rated capacity to meet or exceed the anticipated loading.
Use Panel 2 of the Journeyman Rigger's Reference Card to solve the questions relating to weight distribution. Then use Panel 1 to choose the proper wire rope slings to be attached to the main hoist and auxiliary hoist.
Workshop Assignment
Determine the following:
- Load to Main Hoist Block
- Load to Auxiliary Hoist Block
- Sling selection for Auxiliary Hoist
- When initially lifting the column off the ground, which hoist should lift first to avoid buckling the column?
The answers to this workshop can be found below.
Happy trails to all my crane and rigging friends,
Mike Parnell
ITI-Field Services
P.S. This article was originally published in The Professional Rigger Newsletter, you can download this newsletter here - Pick & Turn.
Answers:
