The Colorado State University Cooperative Extension District Agricultural Safety Display, designed to be used at county fairs, crop clinics, etc., was built by the Department of Agricultural and Chemical Engineering and funded by NIOSH. The display has two segments, a tractor rollover display and a display backboard, title, safety script, pictures and examples of handouts. The display can be used unattended or with a knowledgeable person to answer questions. If it is unattended, only the display board should be used.
The first segment is the tractor rollover display. It has a rollover box, a metal cast tractor with removable rollover protective structure (ROPS) and a radio-controlled tractor with a controller. A string and hook is included to demonstrate proper hitching. The purpose of the rollover display is to teach young people and remind adults of the correct method of driving tractors up, down and across hills. Following are the general tractor driving rules and how they can be demonstrated (Practice the following demonstrations prior to performing in front of an audience.):
Demonstration:
- Drive tractor straight up the hill (tractor will overturn)
- Back tractor straight up the hill
- Drive the tractor straight down the hill
- Back the tractor straight down the hill (the tractor will overturn)
NOTE: To include the audience, ask them the correct way to go up or down the hill. From this response, do one of the above. All choices should be selected before this segment of the demonstration is completed.
Demonstration:
Place the tractor on the slope pointing straight downward and have one or more of the audience lift up the rear of the tractor. Turn the tractor around and have the participants lift up the front end. Ask them which end was heavier to lift. This may be performed on a flat surface, but is not nearly as dramatic.
Demonstration:
Place the tractor across the slope and ask the audience if they know how to tell when the slope is too steep to traverse. Tell them the rule about leaning toward the uphill tire. Ask the audience how would they get off the hill safely. Tell them about turning and driving down hill or turning and backing up the hill.
Discussion Topic:
Explain to the audience what a ROPS is and its purpose. Ask the audience what other safety equipment should be used with ROPS (seatbelts). This segment cannot be demonstrated with the model tractor, but it should be discussed.
Demonstration:
Use the metal cast tractor for this demonstration. Show the audience how far the tractor will roll over with the ROPS on the tractor; then show how far the tractor will roll over with the ROPS removed. The ROPS can be removed by pushing in the piston near the lower cross member of the ROPS with a coin or key. Place the tractor upside down, and ask the audience how much room remains for the operator. This will show them that there is not enough room for the operator if the tractor does not have a ROPS and rolls over.
Demonstration:
The display does not contain a tractor with a front end loader, but this topic can be demonstrated. Ask for a volunteer from the audience, and have the volunteer to squat down with their feet apart. Gently try to push him/her over to the side. Next, have the volunteer stand and push him/her to the side. It will be easier to push the volunteer off balance when he/she is standing up. This will demonstrate how the center of gravity raises with increased height. The same principle applies to tractors that have the buckets in the up position.
Demonstration:
Using the radio-controlled tractor, back the tractor part way down hill. Reverse the direction suddenly and the tractor will turn over quickly. This demonstrates how fast a tractor will turn over when under a load.
Demonstration:
Using the radio-controlled tractor and the string with attached hook, show the audience what happens when a tractor is hitched correctly and incorrectly. Hitch the string to the draw bar, and have a volunteer hang onto the string end at the same level as the draw bar. Drive the tractor forward. Next, hitch the string to the eye bolt and repeat the process. The tractor will roll over to the rear.
Demonstration:
Because of the low power of the motor, the tractor may or may not roll over in this demonstration, but the front end should raise slightly. Hold one of the rear tires and try to drive the tractor forward. The front end should raise slightly. Explain to the audience that a real tractor will have enough power to roll over.
Discussion Topic:
Discuss the benefits of keeping machinery in good working condition.
Discussion Topic:
Discuss with the audience the benefits of knowing exactly which tasks the piece of machinery is designed to accomplish. Becoming familiar with equipment also identifies potential hazards inherent to the machine.
Discussion Topic:
Discuss the hazards of leaving equipment running. Many people are killed every year by being run over or entangled in the PTO shaft and other equipment.
Discussion Topic:
Discuss this item with the audience.
Discussion Topic:
Discuss the above with the audience and show the SMV sign at the rear of the radio-controlled tractor.
The second segment of the District Agricultural Safety Display is a display backboard, title, safety script, pictures and examples of handouts. The handouts and other supplies are either available free or can be purchased from the suppliers listed in the resource directory. The title, script and pictures can be stored in the rollover box; the lid can be opened at either corner of the elevated portion. The script and pictures aid in covering three areas of agricultural safety: tractor and equipment safety, chemical safety and animal safety. The tractor and equipment safety information can be used with the above operating rules. The display board can be used for other types of displays as the pictures and titles are removable.
Proper handling and application of agricultural chemicals reduces hazards inherent with use. Potential hazards are contamination of the handler, others in the area and groundwater. The long-term effects of some chemicals are not entirely known, and it is best to use the chemicals with safety practices in mind. Read the pesticide label for correct application and use personal protective equipment (PPE).
Handling livestock with the idea that they are to be kept safe reduces the injury potential to the handler. Animals are not always predictable in their actions, so accidents may happen. If the livestock are kept calm, there is less chance they will react to outside influences. Intact males always possess a greater potential for harming their handler than do other sexes. In general, horses injure and kill more people than do other species of livestock.
Also included with the display is a log and it is located in the last section of the binder. The first ten log sheets are provided for you, as well as a master sheet. This sheet has been produced on thicker paper, DO NOT USE IT, EXCEPT FOR MAKING ADDITIONAL COPIES OF THE LOG. Filling out the log will aid in the evaluation of the effectiveness of the display. After each log sheet has been completed, please return the sheet to either Mac Legault or Paul Ayers. Your assistance will allow us to provide more handouts and other supplies to you free of charge.
With
the financial support of the NIOSH Agricultural Health Promotions
System grant, the Department of Agricultural and Chemical
Engineering developed and produced the Colorado State University
Cooperative Extension District Agricultural Display.
Disclaimer and Reproduction Information: Information in
NASD does not represent NIOSH policy. Information included in
NASD appears by permission of the author and/or copyright holder.
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