Teledyne 4220 installation and operation guide Flow Meter Appendix D General Safety Procedures

4220 Flow Meter

Appendix D General Safety Procedures

the manhole opening. To avoid a serious injury, a person should not be lifted out of a manhole by his arm unless it is a dire emer- gency.

“When more than one person must enter a manhole, the first person should reach the bottom and step off the ladder before the next one starts down. When two men climb at the same time, the upper one can cause the lower one to fall by slipping or stepping on his fingers.

“5. Traffic Protection. In addition to traffic cones, markers, warning signs, and barricades, a vehicle or a heavy piece of equipment should be placed between the working area and oncoming traffic. Flashing warning signals should be used to alert drivers and pedestrians. Orange safety vests should be worn by personnel stationed at the surface when the manhole is located in a vehicular traffic area.

“6. Falling Object. All loose items should be kept away from the manhole opening. This applies to hand tools as well as stones, gravel and other objects.

“7. Removing the Covers. Manhole covers should be removed with a properly designed hook. Use of a pick ax, screwdriver, or small pry bar may result in injury. A suitable tool can be made from 3/4-inch round or hex stock. Two inches of one end should be bent at a right angle and the other end should be formed into a D-handle wide enough to accommodate both hands. Even with this tool, care must be exercised to prevent the cover from being dropped on the toes. The 2-inch projection should be inserted into one of the holes in the cover, the handle grasped with both hands, and the cover lifted by straightening the legs which have been slightly bent at the knees.

“8. Other Precautions. Other precautions which should be taken when entering a manhole are:

•Wear a hard hat.

•Wear coveralls or removable outer garment that can be readily removed when the work is completed.

•Wear boots or nonsparking safety shoes.

•Wear rubberized or waterproof gloves.

•Wear a safety harness with a stout rope attached.

•Do not smoke.

•Avoid touching yourself above the collar until you have cleaned your hands.

“9. Emergencies. Every member of the crew should be instructed on procedures to be followed in cases of an emergency. It is the duty of each crew chief to have a list of emergency phone numbers, including the nearest hospital and ambulance service, police precinct, fire station, and rescue or general emergency number.

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