Tractor Hazards
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TRACTOR HAZARDS HOSTA Task Sheet 4.2 Core NATIONAL SAFE TRACTOR AND MACHINERY OPERATION PROGRAM backward. There are dozens of Introduction examples of tractor turnover Tractors are a primary source of situations. Most are preventable if work-related injury on farms, operators follow good safe tractor however, not all of the injuries operation practices. Some happen while the tractor is being common examples of tractor used for work. overturns include: Nationally, nearly one-third of all • Turning or driving too close to the edge of a bank farm work fatalities are tractor- Figure 4.2.a. Tractor overturns can occur with high or ditch speed sharp turns. Avoid sudden sharp movements in related. Injuries occur for a variety all tractor work. Safety Management for Landscapers, Grounds-Care Businesses, and Golf Courses, John Deere of reasons and in a number of • Driving too fast on rough Publishing, 2001. Illustrations reproduced by permission. All different ways. This task sheet will roads and lanes and running rights reserved. describe types of tractor hazards or bouncing off the road or and the nature and severity of lane Top-heavy, injuries associated with using farm powerful tractors. • Hitching somewhere other than the drawbar when tractors can pulling or towing objects Hazard Groups upset if used There are several hazards • Driving a tractor straight up improperly. associated with tractor operation. a slope that is too steep Tractor hazards are grouped into • Turning a tractor sharply the following four categories: with a front-end loader 1. Overturns raised high Learning Goals 2. Runovers A rollover protective structure (ROPS), a structural steel cage • To recognize and avoid those 3. Power Take-Off Entanglements designed to surround the hazardous situations which can result operator—particularly one that is in exposure to overturns, runovers, 4. Older Tractors PTO entanglements, and older tractor built into an enclosed cab—can Each of these is discussed briefly safety deficiencies. protect the operator from being in this task sheet. Other task sheets killed when a tractor overturns. will cover some of these topics in This is especially true if the Related Task Sheets: more detail. operator has fastened the seat belt. Reaction Time 2.3 Remember, though, that a ROPS Mechanical Hazards 3.1 can protect you from injury but Overturn Agricultural Tractors 4.1 cannot keep the tractor from Tractor Stability Tractor overturns is one major overturning in the first place. This 4.12 Using the Tractor Safely hazard group and accounts for the explains the importance of 4.13 most farm-work fatalities. operating a tractor safely even if Using PTO Implements 5.41 Approximately 50% of tractor the tractor has a ROPS. fatalities come from tractors turning over either sideways or © The Pennsylvania State University 2004 Cooperation provided by The Ohio State University and National Safety Council. Page 2 TRACTOR HAZARDS Follow this rule! One seat on a tractor means one rider only– the operator. Keep all others away. Figure 4.2.b. Tractor runovers have claimed many lives. Extra riders can slip from the tractor and be crushed before the operator can stop. Say no to your friends who want to hitch a ride. tractor. Thus they can be easily The third type of runover incident thrown from the tractor. involves a person who is on the Another runover incident involves ground near a tractor. This may Runover the tractor operator either falling include the tractor operator who off the tractor as it is operating or tries to start a tractor from the There are three basic types of ground while the tractor is in gear. tractor runover incidents. One is being knocked out of the seat by a low-hanging tree branch or other This usually involves an older when a passenger (extra rider) on tractor that can be started in gear or the tractor falls off. Extra rider obstacle. This most often happens on older tractors that do not have a a newer tractor when an operator incidents happen because there is attempts to bypass a newer only one safe place for a person to ROPS and have an older seat that has no arm or back rest (often tractor’s safe start-up design. be on a tractor, and that is in the Bypass starting hazards are operator’s seat. Some new, larger called pan seats). A person can more easily lose his or her balance discussed in more detail in Task tractors have an extra seat for Sheet 4.8. temporary instructional purposes, and be knocked off or bounced out but only if the tractor has an of a pan seat. An operator can also enclosed ROPS cab. The tractors be run over while trying to mount Small children, often under the age that most young and inexperienced or dismount a moving tractor. This of 5, are sometimes run over by a operators drive will have only one type of incident can occur when tractor (and equipment) as it is seat—the operator’s seat. Standing the operator leaves the tractor seat moved around the farmstead. on the tractor drawbar, axle without first shutting off the tractor Often, the tractor operator is housing, side links of three-point and setting the brake or placing it unaware that the child is near the PARK, and the tractor moves hitches, rear-wheel fenders, and the in tractor. A loud noise, such as the unexpectedly. This may happen area immediately around the start up of a tractor, is often during the hitching and unhitching operator’s seat are common attractive to a young child, and he of equipment. Shut off the tractor locations unsafely occupied by or she may run toward it as it starts before dismounting for any reason. extra riders. Extra riders rarely or begins to move. keep a tight handgrip on the © The Pennsylvania State University 2004 Cooperation provided by The Ohio State University and National Safety Council. HOSTA TASK SHEET 4.2 Page 3 Power Take-Off (PTO) rests (pan seat) Entanglement • Seat does not adjust easily or at all The tractor power take-off (PTO) stub is another major hazard. The • Absence of a safety start PTO stub transfers power from the system tractor to PTO-powered • No bypass starting protection machinery. The PTO stub • Rear brakes and brake pedals normally turns between 540 and do not operate properly 1,000 revolutions per minute. At this rate, the stub is turning from 9 • Front wheels do not turn as to 17 times per second. This is quickly as the steering wheel much faster than a human being turns can react if he or she is caught and Figure 4.2.c. Power take-off stub and PTO shaft must • Tractor has no warning flashers be properly guarded to prevent entanglements. Locate pulled into or around the PTO stub or the flashers do not work the PTO area on every tractor you operate. Check or shaft. A person can have an arm whether or not that area is safely guarded. or leg wrapped around a PTO stub • PTO master shield is missing shaft before they know they are in or does not offer adequate protection danger. A PTO master shield PTO shafts kill protects a person from the PTO Young and inexperienced workers or cripple stub. Some tractors have PTO stub may be given older tractors to guards that fasten to the PTO stub. operate in many cases. The older countless All tractors should have a PTO tractor is best suited for the types master shield to protect the tractor of jobs a young or inexperienced victims. Some operator and helpers. operator is hired to do. These of these victims tractors are best suited for raking hay, hauling wagons, and mowing most likely live fields or pastures. Young and in your inexperienced operators should be community. Older Tractors given newer tractors to operate when possible. Older tractors should always be included when talking about tractor hazards. Many farm tractors still used for work may be 30 to 40 years old or older. These older tractors are often less safe to operate because they do not have modern safety features, and because some parts of the older tractor may not have been maintained in good working condition. A list of reasons why older tractors may be less safe to operate includes: Figure 4.2.d. Older tractors are often assigned to younger drivers to do less heavy chores. Raking • hay, pulling wagons, and hauling feed to livestock does not require the most powerful tractor. Older Lack of ROPS and seat belt tractors may have safety deficiencies due to age and missing safety features. This tractor does not have a ROPS or seat belt. • A seat without arm and back © The Pennsylvania State University 2004 Cooperation provided by The Ohio State University and National Safety Council. Page 4 TRACTOR HAZARDS Safety Activities 1. Match the tractor hazard with the safety situation. (Some choices may be used more than once.) ___A. Overturn 1. High lift carried in raised position in transit ___B. Runover 2. Pet dog was tied to wagon ___C. PTO entanglement 3. Bypass starting ___D. Older tractor deficiency 4. PTO stub shaft missing 5. Driving too close to ditch embankment 6. A friend is helping to drop the hitch pin 2. Write a letter to your best friend explaining why you won’t let him/her ride on the fender of the tractor to go to the field to help you make hay. 3. Explain how people are run over when they choose to bypass the ignition switch to start the tractor engine. 4. Learn more about the hazards of bypass starting a tractor engine by contacting a tractor salesperson or mechanic.