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Night Operations. 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
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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.
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.
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.
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
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.
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.
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.
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. Light Plant Safety
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.
