This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ductive ropes and handlines, fiberglass-reinforced plastic rods, nonconductive portable ladders (such as, fiberglass), protective shields, rubber insulating equipment, voltage-rated plastic guards, and so forth.
lineman (the victim) was killed after contacting a 17,400-volt charged switch.The victim was part of a three-man crew replacing cables under a switch cabinet. At the time of the accident, the crew was feeding a new cable under the concrete foundation pad below the cabinet. As one worker pushed the cable under the foundation, the victim looped the cable inside the foundation under the cabinet. The victim was using a hot stick to loop the cable but was not wearing his hardhat when his head came either in close proximity to or contacted the charged switch. Crewmembers saw a flash and came around the switch cabinet to where the victim was located. He was found slumped partially in the cabinet. A crewmember used a hot stick to move the victim away from the cabinet and then began CPR. Emergency Medical Services transported the victim to a nearby hospital where he was declared dead from injuries associated with high-voltage electrocution.Based on the findings of the investigation, to prevent similar occurrences, employers should: Ensure workers use personal protective equipment and enforce its use; Ensure workers are capable of recognizing and avoiding hazardous situations; Emphasize de-energizing, isolating, or cover energized work areas whenever personnel need to work within high voltage danger zones. NIOSH FACE Program: Alaska Case Report 00AK011 | CDC/NIOSHFACE 00-AK-011 A Section 7 Page 55 S AF ET Y M O D EL S TAG E 3--C O N T rOLLING HAZArDS: SAFE WOrK ENVIrON M EN T Summary of Section 7 Control contact with electrical voltages and control electrical currents to create a safe work environment. Lock out and tag out circuits and machines. Prevent overloaded wiring by using the right size and type of wire. Prevent exposure to live electrical parts by isolating them. Prevent exposure to live wires and parts by using insulation. Prevent shocking currents from electrical systems and tools by grounding them. Prevent shocking currents by using GFCIs. Prevent too much current in circuits by using overcurrent protection devices. Prevent against electric shock or arc blast when working live by using proper PPE and protective tools. Page 56 Section 7 S A F E T Y M O D E L S TAG E 3 -- C O N T r O L L I N G H A Z A r D S : S A F E W O r K P r AC T I C E S Section 8 Safety Model Stage 3-- Controlling Hazards: Safe Work Practices
How Do You Work Safely?
A safe work environment is not enough to control all electrical hazards. You must also work safely. Safe work practices help you control your risk of injury or death from workplace hazards. If you are working on electrical circuits or with electrical tools and equipment, you need to use safe work practices. Before you begin a task, ask yourself: What could go wrong? Do I have the knowledge, tools, and experience to do this work safely? All workers should be very familiar with the safety procedures for their jobs. You must know how to use specific controls that help keep you safe. You must also use good judgment and common sense. Control electrical hazards through safe work practices. Plan your work and plan for safety. Avoid wet working conditions and other dangers. Avoid overhead powerlines. Use proper wiring and connectors. Use and maintain tools properly. Wear correct PPE. Page 58 Section 8 Plan your work and plan for safety
Take time to plan your work, by yourself and with others. Safety planning is an important part of any task. It takes effort to recognize, evaluate, and control hazards. If you are thinking about your work tasks or about what others think of you, it is hard to take the time to plan for safety. But, YOU MUST PLAN. Plan to be safe. A 40-year-old male meter technician had just completed a 7-week basic lineman training course. He worked as a meter technician during normal working hours and as a lineman during unplanned outages. One evening, he was called to repair a residential power outage. By the time he arrived at the site of the outage, he had already worked 2 hours of overtime and worked 14 straight hours the day before. At the site, a tree limb had fallen across an overhead powerline. The neutral wire in the line was severed, and the two energized 120-volt wires were disconnected. The worker removed the tree limb and climbed up a power pole to reconnect the three wires. He was wearing insulated gloves, a hard hat, and safety glasses. He prepared the wires to be connected. While handling the wires, one of the energized wires caught the cuff of his left glove and pulled the cuff down. The conductor contacted the victim's forearm near the wrist. He was electrocuted and fell backwards. He was wearing a climbing belt, which left him hanging upside down from the pole. Paramedics arrived 5 minutes after the contact. The power company lowered his dead body 30 minutes later. Several factors may have contributed to this...
View Full Document
- Spring '09