Sledge Hammers by liwenting

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									Sledge Hammers
                                                                       Origin
 • Invented in the ship building industry
 • Ships were held on “sledges” while they
   were being built
 • These “sledges” were held in place by
   wooden chocks
 • The Sledge Hammer was used to remove
   the wooden chocks


1. Wikipedia- “Sledge Hammer”   http://en.wikipedia.org/wiki/Sledgehammer
              Specifications
• Handle: Wood or               Wooden Handle
  Fiberglass
• Head: Forged Steel
  (Various Sizes)        Head               Handle
• Finish: Lacquered or
  Painted                       Fiberglass Handle

• Grips: None, Rubber
  or Taped
                      Uses
• Demolition
  – Masonry Walls
  – Gypsum Board Walls
• Machine Maintenance
  – Dislodging Stuck Objects
  – Replacing Metal Pins
• Driving
  – Fence Posts
  – Railroad Spikes
 People who use Sledgehammers
• Most Construction Trades:
  – Electrician
  – Site Work
  – Mechanical
  – Masonry
  – Demolition
  – Shell Contractors
  – Steel/Iron Workers
                                                     Types
 • Fiberglass Handle (33”-35”)
          – Sizes: 6lb, 8lb, 10lb, 12lb, 16lb, 20lb
 • Wooden Handle (33”-35”)
          – Sizes: 6lb, 8lb, 10lb, 12lb, 16lb, 20lb
 • Hand Held (16”)
          – Sizes: 2lb, 3lb, 4lb, 6lb, 8lb, 10lb




2. http://www.hammersource.com/Sledge_Hammers.html
             Proper Use
• Use both hands
• Swing using your legs and core
• Wear proper PPE (discussed on next
  slide)
• Focus on the task you are performing
• Follow OSHA standards relevant to type
  work being done
         Major Safety Concerns
• Muscle Pulls/Back Problems
   – Improper use can cause serious muscle pulls and back injuries
• Struck By
   – Debris
   – Metal Shards
   – Machine Equipment
• Caught Between
   – Equipment while trying to repair
• Fall
   – Losing balance from weight of sledge hammer
    Proper Safety Precautions
• Stretch Well
• Choose the right size hammer for the job and
  physical ability of the worker
• Inspect the Equipment
  – Cracked or Chipped handles
  – Cracked or Chipped heads
• Inspect the work area
  – Check for hazards
  – Don’t work under loads
  – Make sure no one is within swinging distance
          Personal Protective Equipment (PPE)

      •      Hard Hat
      •      Hand Protection
      •      Eye Protection
      •      Foot Protection
      •      Elbow/Knee Pads
      •      Plastic Neck Guard



4. OSHA 29 CFR 1926 Construction Industry Regulations. Geneseo, IL: Reglas Press, LLC, 2007.
                                    Fatality Case #1
    • “At approximately 15:00 on June 18, 2001, an employee
      was preparing to repair a water well when he was using
      a sledgehammer to pound a steel stake into the ground.
      A small fragment of steel from the hammer broke away
      and penetrated his chest. In spite of rescue efforts, he
      died at the scene.”

    • This is an example of a struck by, normal PPE would not
      protect the worker in this situation




3. OSHA Fatality Report 1990-2007
                                    Fatality Case #2
    • “'at approximately 2:30 p.m. on June 28, 1991, employee #1
      was attempting to straighten out a bent rear section of the
      body of a Mack r685 12-yard dump truck. Employee #1 had
      propped open its tailgate with a piece of wood and was hitting
      the metal with a sledge hammer. The piece of wood that was
      holding open the gate dislodged and the heavy metal tailgate
      closed on the employee, crushing him between the truck and
      the tailgate. He was taken to the hospital where he died from
      his injuries.”

    • This is an example of the a caught in between injury, if the
      employee followed the truck manufacturer's instructions and
      used the right tool for the job.


3. OSHA Fatality Report 1990-2007
                                    Fatality Case #3
    •      “'During the removal of railroad rails for the purpose of refurbishing the
           tracks and ties an employee was struck by a 1-cm x 1/2 cm shard of
           fractured sledge hammer head. The sledge hammer head produced the
           single shard when it struck a punch that was being used to drive a heal filler
           bolt from the rail, heal filler block and joint bar. The shard struck and
           entered the anterior neck of the employee using the sledge hammer. Upon
           entry the shard penetrated 4-inches perforating the right carotid, left carotid,
           and left subclavian arteries; left pleural cavity; and the apex of the left lung.
           The employee was wearing the customary and usual personal protective
           equipment,”


    •      This is a struck by case, normal PPE would not be able to protect the
           employee from this. The employee should have inspected the equipment
           before using it.



3. OSHA Fatality Report 1990-2007
                                    Fatality Case #4
    • “'at approximately 8:25 a.m., on September 8, 1992, two workers
      were standing on a steel girder during steel erection for a
      warehouse addition. Open web steel bar joists had previously been
      set down onto and between two steel girders. No safety nets or fall
      protection was in use. Workers were not performing steel connecting
      tasks but were measuring and about to align and tack weld the bar
      joists into final position. Employee #1 attempted to hand the other
      worker a long-handled sledgehammer, but apparently lost his
      balance and fell 39 ft to the hardened earth. Sustaining multiple
      injuries, employee #1 was killed.”


    • This is an example of a fall, if the employees were following the fall
      protection OSHA standards then they would be alive still.


3. OSHA Fatality Report 1990-2007
        Relative OSHA Standards (PPE and Tools)

      • Personal Protective and Live Saving Equipment
        (Subpart E)
               – OSHA 1926.95: Criteria for person protective
                 equipment
               – OSHA 1926.96: Occupational foot protection
      • Tools- Hand and Power (Subpart I)
               – OSHA 1926.301: Hand Tools
                        • A. Employers shall not issue or permit the use of unsafe
                          hand tools.
                        • D. The wooden handles of tools shall be kept free of splinters
                          or cracks and shall be kept tight in the tool.

4. OSHA 29 CFR 1926 Construction Industry Regulations. Geneseo, IL: Reglas Press, LLC, 2007.
          Relative OSHA Standards (Fall Protection)

      • Fall Protection (Subpart M)
               – OSHA 1926.500: Scope, application, and definitions
               – OSHA 1926.501: Duty to have fall protection
               – OSHA 1926.502: Fall protection systems criteria and
                 practices
               – OSHA 1926.503: Training requirements
      • Steel Erection (Subpart R)
               – OSHA 1926.760: Fall Protection




4. OSHA 29 CFR 1926 Construction Industry Regulations. Geneseo, IL: Reglas Press, LLC, 2007.
                                        Relative OSHA Standards
                                        (Demolition and Hoisting)
      • Cranes, Derricks, Hoists, Elevators, and
        Conveyors (Subpart N)
               – 1926.550: Cranes and Derricks
      • Steel Erection (Subpart R)
               – 1926.753: Hoisting and Rigging
      • Demolition (Subpart T)
               – 1926.850: Preparatory Operations
               – 1926.854: Removal of walls, masonry sections, and
                 chimneys
               – 1926.858: Removal of steel construction


4. OSHA 29 CFR 1926 Construction Industry Regulations. Geneseo, IL: Reglas Press, LLC, 2007.
                  Citations
1. Wikipedia- “Sledge Hammer”
  http://en.wikipedia.org/wiki/Sledgehammer
2. http://www.hammersource.com/Sledge_
  Hammers.html
3. OSHA Fatality Report 1990-2007
4. OSHA 29 CFR 1926 Construction Industry
  Regulations. Geneseo, IL: Reglas Press, LLC,
  2007.
Think Safety

Work Safely

								
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