CONSTRUCTION & ENERGIZED ELECTRICAL UTILITIES

OSHA has included electrocutions as part of the Focus Four Hazards for construction because of the persistence and significance of this hazard. The Focus Four Hazards represent the causes of nearly 60% of all construction fatalities each year.

Electrocution caused by contact with energized power lines is a significant cause of fatalities in construction. Some examples of equipment that could contact power lines are cranes, pile drivers, guardrail drilling rigs, backhoes, excavators, front-end loaders, trenching machines, dump trucks and concrete pumping trucks.

Keep in mind on every construction project:

  • Survey the site, identify overhead power lines and post DANGER signs and visible barriers at all potentially dangerous locations.
  • Maintain at least 10 feet of clearance between equipment and power lines energized with less than 50,000 volts. For power lines carrying more energy, increase the distance by one foot for every 30,000 volts.
  • If you must operate equipment close to the power line, use a spotter to identify when you’re nearing the minimum approach distance limit.
  • Before beginning paving or any other road work activity, survey the area for any power lines that cross over the roadway, post DANGER signage notifying dump truck drivers to lower their beds before traveling under overhead power lines and bridges.
  • If you must work close to a power line, consider calling the responsible utility to have the line protected during the operation.
  • Before beginning ANY work activity in which you will penetrate the ground, call Indiana Underground Plant Protection Services (Indiana 811) at 811 or 800-382-5544 at least two full working days before you begin the work activity and have them locate the underground utilities. Do not begin work until this has been done.
  • Once the locate service has marked the location of the buried utility, pothole/daylight to positively identify and expose the buried utility.
  • Maintain a clearance of not less than two feet around the diameter of the buried utility with all mechanized equipment.
  • Protect all underground utility markers from damage and replace them as needed.
  • Situate jobsite unloading and storage areas in open areas away from overhead power lines.

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DETECTING A STROKE

A construction project can be hectic place with a high level of activity. Contractors and equipment move about, with everyone focused on the task at hand. In this environment, it’s easy to miss the signs and symptoms of a serious health situation, like a stroke. Early detection is critical to saving a life.

A stroke happens quickly. If a victim is treated within the first three hours of its onset, some effects of a stroke can be reversed.

The following are the most common symptoms of stroke. However, individuals may experience symptoms differently or at different times. Don’t ignore any of the symptoms, even if they go away.

  • Sudden weakness or numbness of the face, arms or legs, especially on one side of the body.
  • Sudden confusion or difficulty speaking or understanding.
  • Sudden problems with vision such as dimness or loss of vision in one or both eyes.
  • Sudden dizziness or problems with balance or coordination.
  • Sudden problems with movement or walking.
  • Sudden severe headaches with no other known cause.

The first three letters in the word stroke can help you determine if a person is having a stroke. Ask the individual to:

  • S – Smile.
  • T – Talk – Get them to speak a simple sentence, coherently, such as “It is sunny out today.”
  • R – Raise both arms.

Another method for remembering what symptoms to look for is the acronym FAST. The letters remind you to look for:

  • F – Facial weakness – Can the person smile? Are their mouth or eyes drooping?
  • A – Arm weakness – Can the person raise both arms and hold them parallel?
  • S – Speech problems – Can the person speak clearly and understand what you say?
  • T – Time is critical – Contact your supervisor immediately and consider calling 911.

Also, if you ask the person to stick out their tongue and, when they do, it is crooked or goes to one side or the other, there is a great likelihood that this person is having a stroke.

No matter the method you use to detect the signs and symptoms of a stroke, remember to seek immediate medical attention. Even if you are not sure, it is always best to err on the side of safety.

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VEHICLE & EQUIPMENT BACKING SAFETY

Vehicle backing accidents happen too often but are completely preventable. Vehicle or equipment backing accidents can lead to costly damage, serious personal injury or fatality.

STEPS TO AVOID BACKING ACCIDENTS

  • Make sure your path is clear and that any person in the area is aware of your intention to back up before moving your vehicle or equipment.
  • Don’t assume everyone can hear the back-up alarm and will move clear of your path when you are backing up.
  • Park defensively. Choose parking places that allow you to exit easily, like pull-through spaces.
  • Position the vehicle or equipment to exit the parking area in a forward direction. Doing so gives the driver a full forward view of approaching pedestrian or vehicle traffic that they might not otherwise see when backing.
  • Know your vehicle’s blind spots. Mirrors provide limited visibility. A medium-sized truck can have blind spots that extend up to 16 feet in front and 160 feet behind the vehicle.
  • Physically turn your body and look around at your travel path and the surrounding area when backing.
  • Do a quick walk-around before getting into the vehicle or equipment. Inspect the area behind the vehicle or equipment looking for obstructions or space limitations.
  • Know the clearances around the equipment or vehicle. Check for obstructions, low-hanging wires, utility poles or other possible obstacles.
  • Use a spotter when backing to the vehicle’s blind side, which is the right side. The right side of a vehicle typically has larger blind spots.
  • Drivers sometimes must spot for themselves. You need to return to the vehicle and start backing within a few seconds after finishing the walk-around. This will allow very little time for people, cars or other obstacles to change the back-up conditions. Backing without a spotter should only take place after the driver has learned as much as possible about the area they are backing into.
  • As a pedestrian in a work zone, always assume the driver or operator does not see you. Make eye contact before proceeding around a vehicle or piece of equipment.

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Members can download the audio version of this toolbox talk here.

EYE & FACE PROTECTION

There is no shortage of excuses for not wearing eye protection: they are uncomfortable; they are dirty, they are scratched; they fog up; or you forgot to put them on. Unfortunately, every day about 2,000 U.S. workers suffer a job-related eye injury that requires medical treatment, according to the National Institute for Occupational Safety and Health. About one-third of the injuries are treated in hospital emergency rooms, and more than 100 of these injuries result in one or more days away from work.

OSHA has identified five major dangers to your eyes.

  • Dust – Common eye hazard that can scratch and cause infection.
  • Flying debris – Eye injuries from debris like cement chips, metal fragments and wood particles.
  • Chemicals – Eye injuries from chemical splashes, mists and vapors (gas and diesel fuel).
  • Optical radiation – Welding and laser activity create high concentrations of heat, infrared and ultraviolet radiation.
  • Penetration – Damage to the eye and face from hand and power tools or objects struck by a tool.

FACE SHIELDS

When using equipment like cut-off saws, grinders, chipping hammers and other power tools, it’s important to wear a face shield along with safety glasses. The face shield helps to prevent cast-off, high-velocity debris from impacting the eye and face. The face shield can also provide face protection should a grinding or cutting blade shatter.

All eye and face protection, such as safety glasses, goggles and face shields must be marked that they meet or exceed the test requirements of ANSI Z87.1-1989, 2003, 2010. The marking is typically located somewhere on the frame of the glasses or the lens of the face shield or goggles.

PRESCRIPTION GLASSES

Regular prescription glasses do NOT have the level of impact protection required under ANSI Z87.1. Those people that wear prescription eyewear must either wear approved safety glasses with prescription lenses, side shields and frames that meet or exceed the ANSI Z87.1 standard or wear approved, ANSI-standard eye protection designed to be worn over their regular prescription glasses.

FIRST AID

Should a particle or other debris get into your eyes, flush the surface with a sterile saline solution from the first aid kit, and seek medical attention. Some particles may become deeply embedded and must be removed by a physician.

EYE INJURY PREVENTION

The most important thing you can do to protect your vision at work is to always wear the correct eye and face protection for the work activity. This can prevent more than 90% of serious eye injuries, according to the American Academy of Ophthalmology.

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STRUCK-BY HAZARDS

Struck-by injuries are produced by forceful contact or impact between the injured person and an object or piece of equipment. In comparison, a caught-in or between incident occurs when an injury is a result of the crushing force between two objects. For example, if a person’s hand is pulled into a conveyor and suffers an injury due to being pulled in and caught between the rollers.

Sources of struck-by accidents include:

  • Equipment or vehicles moving in the work zone.
  • Falling tools, equipment or materials.
  • Operating tools or equipment.
  • Moving or lifting unsecured loads.

Vehicle and equipment traffic operating within the project including dump trucks, paving equipment, rollers, and other heavy equipment create a struck-by hazard for contractors working within the project. The equipment’s large size and height creates blind spots for the operator that can extend greater than 10 feet outside the perimeter of the vehicle or equipment.

Important safety measures include:

  • Don’t walk in front, along the side or behind vehicles or equipment when they are moving.
  • Maintain a three-foot perimeter around all equipment. Equipment could move suddenly.
  • Don’t allow work activity to overlap. No work activity should take place within the swing radius of excavation equipment.
  • When one piece of equipment is lifting or putting materials or tools in place, do not place your hands on, or manually guide, the load. Use a tag line.
  • Secure tools, equipment and material to prevent them from falling from heights.
  • Inspect saws, grinders and other tools before use to make sure the guards are in place, the blades aren’t chipped or cracked and are in overall good condition.
  • When you are using saws, grinders and other powered hand tools, always wear safety glasses and a face shield.
  • Coordinate work activity to minimize the possibility for people to be near overhead work activity or moving equipment.

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STRAINS & SPRAINS

Construction is a physically demanding job, and the physical demands can place stress on the body. The physical stresses can result in sprains and strains to the muscles and ligaments. Sprains and strains account for about a third of injuries in construction.

STRAIN vs. SPRAIN

A strain is an injury to either a muscle or a tendon, the tissue that connects muscles to bones. Back injuries are the most frequent strains. Depending on the severity of the injury, a strain may be a simple overstretch of the muscle or tendon, or it can result in a partial or complete tear.

A sprain is an injury to a ligament, the tough, fibrous tissue that connects bones to other bones. Sprain injuries involve a stretching or a tearing of the ligament.

MINIMIZING THE CHANCES OF STRAINS AND SPRAINS

  • When you are lifting, maintain a good position. A good position means keeping the item being moved or lifted close to the center of your body (waist and midsection). The farther the item being lift is from the center of the body (above the head and neck or below the knees), the greater the risk of a strain.
  • Don’t be foolish. Know your limit. Get help from another person or a piece of equipment.
  • Avoid twisting. Always turn your whole body when you’re changing direction while carrying a heavy object.

RECOVERY

You have to allow your body to recover from the stress you place on it.

  • Rest – a person needs seven to eight hours of sleep a day for sufficient recovery.
  • Nutrition – your body needs a proper supply of protein to allow for recovery. Poor nutrition can slow down your recovery, and some foods can create additional inflammation.
  • Notice warning signs – pain is your body’s indicator, if you ignore pain, it’s more likely an injury will become worse.
  • Do not self-diagnose – some self-treatment methods like Rest-Ice-Compress-Elevate (RICE) are outdated. See the correct person within your company to direct you to proper medical care.

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