Contents

2.2.29 Welding and Cutting
(Reference CH2M HILL SOP HSE&Q-314, Welding and Cutting)
• Only authorized and trained personnel are permitted to operate welding/cutting equipment.
• Do not enter areas where welding/cutting operations are taking place unless completely
necessary and only after receiving permission from the welding/cutting operator.
• If you must be present in an area during welding/cutting operations, position yourself behind
flash screens or wear glasses/goggles with lenses of appropriate darkness.
• Do not look directly at the welding/cutting flash or at reflective surfaces surrounding
welding/cutting operations.
• Avoid contacting compressed gas cylinders. Cylinders should be firmly secured in an upright
position at all times.
• Be aware of tripping hazards created by welding hoses, power cables, leads, and cords
positioned on walking surfaces.
2.3 General Hazards
2.3.1 Fire Prevention
(Reference CH2M HILL SOP HS-208, Fire Prevention)
• Fire extinguishers shall be provided so that the travel distance from any work area to the
nearest extinguisher is less than 100 feet. When 5 gallons or more of a flammable or combustible
liquid is being used, an extinguisher must be within 50 feet. Extinguishers must:
• Maintained in a fully charged and operable condition;
• Visually inspected each month, and;
• Undergo a maintenance check each year.
• The area in front of extinguishers must be kept clear.
• Post “Exit” signs over exiting doors, and post “Fire Extinguisher” signs over extinguisher
locations.
• Combustible materials stored outside should be at least 10 feet from any building.
• Solvent waste and oily rags must be kept in a fire resistant, covered container until removed
from the site.
• Flammable/combustible liquids must be kept in approved containers, and must be stored in an
approved storage cabinet.
2.3.2 General Practices and Housekeeping
(Reference CH2M HILL SOP HS-209, General Practices)
• Site work should be performed during daylight hours whenever possible. Work conducted
during hours of darkness requires enough illumination intensity to read a newspaper without
difficulty.
• Good housekeeping must be maintained at all times in all project work areas..
• Common paths of travel should be established and kept free from the accumulation of
materials.
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