Safe distance for blasting operations near high-voltage lines

Crane Safety Overhead Power Lines OSHA Safety Manuals

 · Operate cranes only if trained in safe operating procedures and OSHA regulations Operate cranes at a slower than normal rate in power line areas Use caution when moving over uneven ground that could cause the crane to weave or bob into power lines Use caution near long spans of overhead power lines since wind can cause the power lines to

Living near overhead high voltage transmission power lines as a

They interviewed for history of living near overhead high voltage power lines during at least past two years and compared with 300 controls which were individually matched for sex and approximate age Logistic regression chi square and paired t tests were used for analysis when appropriate The case group were living significantly closer to power lines P< More

Mine blasting should maintain a safe distance

4 Safe distance from electric detonation The safe distance of power detonation mainly considers the safety distance between the explosion zone and the high voltage line radio station and TV station 5 Explosion safety distance of harmful gas diffusion The harmful gases of blasting mainly include CO NO NO2 N2O5 SO2 H2S NH3 etc

Overhead lines guidelines Technical Safety BC

 · Topic Overhead lines This information bulletin acts as a guideline for recommended best practices and should be used in conjunction with the BC Electrical Code Part 1 Technical Safety BC Bulletin High Voltage Installations NO 1 15 Overhead Systems and other standards referenced in the document This bulletin was developed by the Electrical

Overhead Power Lines Department of Commerce

The crane is operating in the vicinity of a 22 000 volt overhead powerline with a centre line of hook to extremity o f load of 6 metres What safe working distance is needed Answer Clearance from 22 000 volt live power line would be = m Explanation The crane lifting point would need to be 6 metres plus the danger zone


5 Work on or near overhead power lines 6 Portable ladders 7 Conductive apparel 8 Housekeeping duties 9 Electrical safety interlocks 10 Lockout/tagout 11 Cord and plug connected equipment 12 Eye and face protection 13 Safe clearance distances for voltages and 14 Insulated tools RESPONSIBILITY

Mobile Cranes and Overhead Power Lines WORK SAFE

OSHA has established standards for the safe operation of cranes near power lines 29 CFR OSHA s Electric Power Generation Transmission and Distribution standard limits crane operations to a minimum clearance distance of 10 feet from power lines and related equipment energized up to 50 kilovolts 50 000 volts

Determining Safe Distances from Electrical Hazards

Restricted Approach Boundary The Restricted Approach Boundary RAB is identified as the distance from an exposed energized electrical conductor or circuit part within which there is an increased likelihood of electrical shock due to arc over combined with inadvertent movement Best practice is to stay 12 or more away from the hazard

Electric Initiation Part 4 Safety Considerations

High Voltage Power Transmission Lines High voltage power lines pre­ sent two distinct dangers to blasters using electric initiation systems First high voltage alter­ nating current in the power li e has the potential to produce a secondary current in the blasting circuit This induction of electric current can take place in a blast­


CD/P 070 Pruning and cutting of trees near energised power lines OPR 6204 Operating regulations for high voltage systems ORHVS Commercial Timber Growers Guideline for Maintenance and management agreement in forest plantation areas and servitude areas available from Eskom s Legal department 3 Definitions

Separation Distances in NFPA Codes and Standards

 · Keywords high hazard industrial occupancy Nonel Lead Appendix B Kazarians and Associates Literature 59 List of Figures Figure 1 The ANFO donor charge enclosed in a steel culvert 14 Figure 2 The Industrial grade AN acceptor charges stored in super sacks 15 Figure 3 The corrugated steel wall construction used for


Clearances from buildings of high and extra high voltage lines 81 Conductors at different voltages on same supports 82 Erection of or alternation to buildings structures flood banks and elevation of roads 82A Transporting and Storing of material near overhead lines 83 Clearances General 84 Routes Proximity to aerodromes 85 Maximum interval between supports 86

Safe Work Practices on High Voltage Substation Apparatus

Overhead Lines Safe Work Practices on HV Cables Supporting Documentation P r o c e d u r e s Access for Work on HV Overhead Lines A ce s f orW k on HV Transmission Cables W o r k I n s t r u c t i o n s Safe Work Practices on HV ubs ta ion Apparatus 2 Scope This procedure applies to work practices on all high voltage substation apparatus 3 Accountability Title

High Voltage Safety Safety UW Madison

 · 75 mA can cause ventricular fibrillation of the heart a rapid ineffective heartbeat and ultimately death 100 J is enough to stop or start a heart The conventionally accepted electric shock hazard thresholds are 50 Vrms and 5 mA 1 Any current above 10 A regardless of voltage should be treated as a hazard 2

Electrical safety training courses for workers BC Hydro

 · Anyone working near our lines needs to learn how to keep a safe distance from a power line and maintain compliance with WorkSafeBC it could save your life We offer in person and online and electrical awareness training for anyone who works near electricity including trade workers first responders and people working near high voltage lines

Mobile cranes and power lines National Safety Council

difficulty in judging distance i While erecting or replacing outdoor advertisements along roadways billboards Applicable regulations 4 OSHA provides regulations applicable within the United Stated for safe operation of cranes near power lines in 29 CFR a 15 Cranes and This subsection covers non energized power lines mandates minimum clearance

Aerial Lift Tips How to Avoid Power Line Hazards ALC

 · Generally speaking the higher the voltage the more distance must be put between the lines and the workers When in doubt keep back from power lines It s simply not worth working near power lines when you re unsure of their voltage Power Line Safety On the Job Keeping safe on the job site is of utmost importance

for development near high voltage overhead lines

Planting near high voltage overhead lines 82 4 Active recreation 84 5 Relocating overhead power lines 86 6 Undergrounding 88 7 Tower design 90 8 Noise 91 9 Safety clearances 92 10 Electromagnetic compatibility 94 11 Electric and magnetic fields 95 12 Glossary 96 13 Bibliography 101 14 Contributors 102 15 Contacting National Grid 103 Index 3

Safety Threshold Determination for Blasting Vibration of the

 · The effects of tunnel blast excavation on the lining structures of adjacent tunnels are comprehensively studied for the Xinling highway tunnel project First the LS DYNA software is applied to obtain the characteristics of vibration velocities and dynamic stresses at different positions of the tunnel liner The results indicate that the maximum peak particle velocity

Working Safe Around the Lines Hydro One

Know safe limits 750 to 150 000 volts 3 metres 150 001 to 250 000 volts metres 250 001 volts 6 metres Even power lines carrying less than 750 volts can be hazardous Avoid touching them or coming too close Avoid storing material or equipment under power lines

SECTION 29 United States Army Corps of Engineers

Blasting operations near overhead power lines communications lines utility services or other structures shall not be carried on until the operators and/or owners have been notified and measures for safe control have been taken All loading and firing shall be directed and supervised by one designated person A positive system to detect and measure