Death by Forklift is Really the PITs

From the September issue of OHS Magazine
By Chuck Paulausky, CHMM

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The owner of a machinery and equipment training school was killed while filming a forklift safety video. He was thrown from the forklift and crushed. The investigation revealed that the fatality was due to driver error, high speed over rough terrain, and an unused seat belt.

Unfortunately, this type of forklift fatality is all too common. OSHA statistics indicate that there are ~85 forklift fatalities and 34,900 serious injuries each year. 42% of the forklift fatalities result in the operator being crushed by a tipping vehicle. The safest place for the driver to be is strapped into the seat with a seat belt. According to OSHA, their enforcement policy on the use of seat belts on powered industrial trucks is that “employers are obligated to require operators of powered industrial trucks which are equipped with operator restraint devices or seat belts to use the devices.” Compliance officers will enforce the use of such devices under Section 5(a)(1) of the OSH Act, the General Duty Clause.

OSHA has established detailed regulations for operation of “powered industrial trucks”, which includes all types of material-handling vehicles, from forktrucks to powered pallet jacks to order-pickers. The Powered Industrial Truck (PIT) regulations can be found at 29CFR1910.178. Incorporated into the regulation by reference, ANSI B56.1-1969 covers the design and construction requirements for PITs.

The OSHA regulation provides specific designations for PITs, based on the type of power source and safeguards. In addition, “designated locations” are identified, such as hazardous atmospheres. The regulation also covers a variety of other topics, including operation maintenance and regular, documented inspection of the vehicles, but one critical part of the regulation is for operator training.

PITs can be especially unforgiving under the wrong conditions. Operators need to understand that PITs are very different from regular vehicles in the way they maneuver and are balanced. Employees who have never driven a PIT will not have the innate knowledge and skill to drive one without training. For this reason, much of the required training is focused on operation, load capacity, stability, and operating limitations.

Some of the key factors that should be covered to help operators understand technical aspects of forklift operation include:

  • Center of Gravity- The size and the center of gravity of a load can directly affect the safe lifting capacity of the PIT. Positioning the center of gravity as close as possible to the center of the PIT will help keep the vehicle from toppling sideways, especially when turning.
Load
  • Load Center- The load center relates to the distance of the center of gravity from the vertical face of the forks. Keeping the load as close as possible to the vertical face will help keep the load from overcoming the counterweight at the rear of the vehicle causing it to tip forward. Simple calculations can be used to determine whether a load can be handled by a particular forklift: Capacity x rated Load Center = Maximum Allowable Inch-Pounds; Dividing this by a load’s actual load center will tell you the maximum allowable weight for the load.
    • For example, let’s say a forklift has a 4000-pound capacity with a 24″ load center. The Maximum Allowable Inch-Pounds is 96000 in-lbs. Suppose a load has a 30″ Load Center. Dividing 96000 by 30″ results in 3200 pounds, the maximum the load can weigh to be safely lifted by this forklift.
  • Stability Triangle- This is a triangle formed by the front axle and the rear center point inline with rear axle. The combined center of gravity (load center plus vehicle center of gravity) must stay within the stability triangle to maintain stability. Speed of travel, centrifugal force from turning, load height, mast tilt, ground slope, and various other factors will also affect the location of the combined center of gravity.

Center of GravityOperators must receive training for each type of PIT that they will be operating, including the use of any attachments, i.e. manlifts, drum attachments, etc. The training must also include the conditions under which the vehicle will be operated, such as surface conditions, ramps and slopes, hazardous locations, visibility, and pedestrian traffic. Since these factors are different from workplace to workplace, OSHA requires the training to be site-specific.

Training must be conducted by “persons with the necessary knowledge, training, and experience to train powered industrial truck operators and evaluate their competence.” The training must include both formal instruction and practical driver training. The trainees must also be evaluated initially and every 3 years to establish that they are qualified to safely operate the equipment. Refresher training is required: (1) whenever an operator is observed operating unsafely, (2) when an operator receives an unsatisfactory evaluation, (3) when an operator is assigned to a different type of PIT, and (4) when changes in workplace conditions could affect safe operation. As with any OSHA-required training, the training and evaluations must be documented.

The use of Powered Industrial Trucks is critical to many industries. By implementing a forklift safety program and effective PIT training, you can ensure that this asset doesn’t become a liability.

Stay Safe! Chuck Paulausky

This updated article was originally published in the June 2008 issue of the Journal of Environmental Management-Arizona

Chuck Paulausky, CHMM, is President of CP Safety & Environmental LLC, a consulting firm providing EPA & OSHA compliance support, and worker’s compensation loss control/risk assessment services. Since 1989, Chuck has been providing safety and environmental support to manufacturers and other industries in Arizona, Texas, California, Utah, Europe, and Asia. Chuck is active in several professional and business organizations, and is an ACHMM Champion of Excellence Award winner. Chuck has been an annual planning committee member and presenter for the Gatekeeper Regulatory Roundup, Arizona’s premier professional development event since its inception in 2005. Chuck can be reached at: 480-694-1975, cpaulausky@www.cpsafety.net, www.cpsafety.net