Night Operations

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Night Operations
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Dangers of Shift Work

• According to Occupational Hazards Magazine
• Work related injuries increase 15.2 for swing
  shift
• Work related injuries increase 27.9 for night
  shift
• Injury numbers are compared to day- shift
  operations
• Employees are 36 more likely to be injured on
  their fourth consecutive night shift.

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Biological effects

• As one's body moves through each 24-hour cycle,
  it experiences fluctuations in temperature,
  wakefulness, gastric activity, heart rate, blood
  pressure and hormone levels. This flow of body
  activity is known as the circadian rhythm. These
  rhythms are important for optimal functioning of
  the many processes vital to health. When the
  normal circadian rhythms are disrupted by lack of
  sleep or by crossing time zones, it may take days
  or weeks for the body to readjust.

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Biological effects

• Among the most common health problems are
  gastrointestinal complaints, including
  constipation, diarrhea, excessive flatulence,
  abdominal pain and heartburn. These ailments are
  two to three times more frequent among shift
  workers.
• Other factors include disturbed sleep, poor
  eating habits, overeating, excessive coffee
  drinking, smoking and psychological stress.

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Short Term Operations

• Increased risk as crews jump from Day to Night
  Shift.
• Supervision needs to be aware of the number of
  hours already worked by the crew.
• If possible, schedule transition day on front and
  back end of work

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Work area and equipment should be well lit
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• PPE Requirements
• ANSI Type III or full reflective vests
• Increased reflectivity on hard hats.
• Flashlights with traffic wands when working
  around equipment.
• Light colored clothing if feasible.

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• Set up light plants for maximum illumination.
• Train workers on where to stand to increase
  visibility
• All equipment should be completely lit-up to
  increase visibility.

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LIGHTING REQUIREMENTS

• MINIMUM ILLUMINATION
• Foot-candles Area or Operation
• 5 General construction area lighting
• 3 General construction areas, concrete
  placement, excavation and waste area, walkways,
  active storage area, loading platforms,
  refueling and field maintenance areas.
• 5 Indoors-warehouses, corridors, hallways and
  exits.
• 5 Tunnels, shafts and general underground work
  areas - (Exception Minimum of 10 foot-candles
  is required at tunnel and shaft heading during
  drilling, mucking and scaling. Bureau of Mines
  approved cap lights shall be acceptable for use
  in the tunnel heading.)
• 10 General construction plant and shops (e.g.,
  batch plants, screening plants, mechanical and
  electrical equipment rooms, carpenter shops,
  rigging lofts and active storerooms, barracks
  or living quarters, locker or dressing rooms,
  mess halls and indoor toilets and workrooms).
• 30 First aid stations, infirmaries and offices.

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Light Plant Safety

• Train employees on proper set-up and pinch points
• Look for OHP Lines or other obstructions.
• Do not point into oncoming traffic
• Understand the safety requirements for changing
  bulbs.

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Planning for Success

• Shadows in the work area make access difficult
• Preparation for night operations should address
  access and material handling prior so staging
  materials and equipment.

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Increase Visibility -Light it up!