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Working on Ice Covered Surfaces

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					Working on Ice Covered Surfaces

    While many of us earn our living indoors,
     there are those who work outdoors in
   extreme conditions - including on ice over
    water. For them, being "on thin ice" can
   pose a great threat to their personal safety
       Additional points to consider:
•   Don’t judge ice strictly by appearance. Ice can change with the surrounding
    climate conditions. Temperature, precipitation (such as snow, sleet, rain), wind
    speed, ice age, water depth and water quality are all factors that affect ice
    strength and thickness.

•   New ice is usually stronger than old ice because bonds between the crystals
    decay with age making the ice weaker even if melting has not occurred.

•   Ice thickness over a body of water is not constant. Water currents, particularly
    around narrow spots, bridges, inlets and outlets, are always suspect for thin ice.
    Beware of ice around partially submerged objects, such as trees, logs, brush,
    embankments or dam structures.

•   Snow can act like a blanket insulating the water below. Snow can insulate ice and
    keep it strong. It can also insulate it to keep it from freezing. Snow cover also hides
    the surface and can mask rotten ice and thin spots. You should always be cautious
    when moving across snow-covered ice.
                  Working On Ice

• What is most important factor.
• Ice thickness
  – Date
  – Location
  – Ice quality
• Snow on Ice – does it matter
  – firm packed snow 25 lbs/f3
  – 10’x10’x3’ deep = 7500 lbs
             Working On Ice
• Powered Mobile Equipment Operator Training
  – How to use equipment
  – How to evaluate site
             Working On Ice

• What specific piece of knowledge does all ice
  clearing operators need on ice

• Berms have cracks under them and cannot be
  disturbed without special precautions
                        Park it Here
Parking a vehicle or equipment
Before you park a vehicle or equipment on the ice cover, check:
• your GVW—Vehicle including fuel, equipment, cargo and people


Check your Ice Safety Plan for:
• maximum time on the ice and minimum ice thickness—For example,
a light truck parked for more than 2 hours but less than 7 days
requires at least 55 cm of clear, good quality ice.
• variations in ice thickness—Ice is often thicker in a driving lane, but
thinner and weaker near and under snow banks beside driving lanes.
• distance—Park vehicles and equipment at least 2 lengths apart—
vehicle plus equipment lengths.
             Working On Ice
• Effective Communication System
  – Workers working alone must have a means to
    contact the outside world
  – On ice covers, immediate necessary
Working On Ice
  PPE Required
           –   Visibility
               Floatation Clothing
           –   Life Line Devices
               Warning
           –   Hard Hats Kit (Clothing,
               Emergency
           –   Food, Survival Equipment,
               Footwear
           –   Vehicle Emergency
               Eyewear
               Equipment)
           –   Ear Protection
             Working On Ice
• Work done on ice is done in pairs
• Supervisors also require training
               Working On Ice
• Exploration companies
  – While not considered expert, are not relieved of
    all safety monitoring responsibility
  – Due diligence

				
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posted:11/15/2013
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