Electrical Safety

The following contains disturbing images and videos. Caution is advised

Applicable Safety Standards OSHA 29 CFR 1910 Subpart S OSHA 29 CFR 1910.147 of Subpart J OSHA 29 CFR 1910.269 of Subpart R OSHA 29 CFR 1926 Subpart K NFPA 70 – NEC NFPA 70B – Recommended Practice for Electrical

Equipment Maintenance NFPA 70E – Electrical Safety in the Workplace NFPA 77 – Recommended Practice for Static Electricity NFPA 79 - Electrical Standard for Industrial Machinery

Where Am I Going and Why?

Well Planned Safety Culture Improves Employee Productivity Lowers Insurance Costs Meets Government Requirements Saves Organizations Money

Safety Standard Goals Provide an electrically safe work place! Minimize arc flash and blast hazards Minimize shock hazards Define “acceptable” tasks Evaluate our Electrically Qualified Personnel Work only on Electrically Safe Equipment.

1. Fall protection, construction (29 CFR 1926.501) 2. Hazard communication standard, general industry (29 CFR 1910.1200) 3. Scaffolding, general requirements, construction (29 CFR 1926.451) 4. Respiratory protection, general industry (29 CFR 1910.134) 5. Powered industrial trucks, general industry (29 CFR 1910.178) 6. Control of hazardous energy (lockout/tagout), general industry (29 CFR

1910.147) 7. Ladders, construction (29 CFR 1926.1053) 8. Electrical, wiring methods, components and equipment, general industry

(29 CFR 1910.305) 9. Machinery and Machine Guarding, general requirements (29 CFR

1910.212) 10.Electrical systems design, general requirements, general industry (29 CFR

1910.303)

2014 Most Cited OSHA Violations

Why are we doing this? Over 2000 people are admitted to burn centers each

year due to electrical arc flash burns. The temperature can reach 35,000°F.

The pressure wave can exceed thousands of pounds per square foot.

Projectiles can be expelled at 700mph. Vaporized Copper Expands at a Ratio of 67,000:1 Approximately 400 electrical related fatalities per

year

Key Program Components Energy Control Procedures

Written Safety Program

Qualified Personnel

Hazard Analysis

Arc Flash Study

Training

PPE

If one part of the Program is out of balance. It will collapse.

Comprehensive LOTO Procedures

Equipment specific LOTO procedures are needed for any item with more than TWO energy sources (regardless of type).

LOTO The ONLY safe electrical equipment is de-energized equipment. Electrical LOTO must be completed with a meter.

Verify using the 3 step LDL (Live Dead Live) method if electrical work is involved.

What Is A Qualified Person? Someone who has demonstrated the knowledge, skills, and expertise to work on and around energized equipment. They shall understand all the equipment’s modes of operation and installation requirements. NFPA 70E-2015

Written Safety Program Key Components

Define Qualified Personnel Requirements Reference LOTO procedures and schedule for reviewing

procedures Appendix for Equipment Specific LOTO procedures Define acceptable tasks

Plant Production Personnel Electrically Qualified Personnel

Describe training guidelines and intervals Care of PPE and tools

Hazard Analysis What type of facility are we?

Manufacturing, Health Care, Hospitality, Mining, Petrochemical

What tasks do our qualified personnel complete? Troubleshooting, programming, inspections

Frequency of those tasks. Contributing factors.

Confined space, flammable surroundings, etc Outside Contractors? Arc Flash, Arc Blast, Shock or Fire

Arc Flash Study Collect field data Determine which evaluation method will be use Update site electrical drawings Create a model of the system to evaluate worst case arc

flash situations Professional Engineer evaluates the results Generate equipment labels Recommend mitigation options

Software Model

Current Electrical One-Line

Drawings must be current and accurate.

Hazard Labeling Proper labeling must include AF energy, Boundary and Voltage

Training Factors impacting arc flash intensity Proper Use of PPE Arc Rated vs Flame Retardant Impact of Electricity on the Human Body Explain information on Arc Flash Labels

Boundaries Calories /cm2

Explanation of the Boundaries

Insulated Tools

Selecting Appropriate PPE Fabric Choice Environmental Factors Production Related Considerations Select Testing Lab Buy or Lease Clothing

If you lease want will the provider do for repairs, contamination, etc.

NFPA 70E PPE Guidelines 2015 Requirements

Class (Category)

Calories/cm²

Typical Personal Protective Equipment Required For All Classes: Safety Glasses, Hearing Protection, and Hand Protection

1 0-4 Fire Resistant (FR) shirt and pants

2 4-8 FR shirt and pants, cotton underwear, arc flash face shield, and leather work boots

3 8-25 2 layer FR clothing or flash suit, cotton underwear, flash hood, and leather work boots

4 25-40 FR shirt and pants, multilayer flash suit w/ flash hood, cotton underwear, and leather work boots

Class 1 PPE Example Single Layer of Arc Rated

FR Clothes (ATPV 4cal/cm2)

Safety Glasses Hearing Protection Hand Protection

Class 2 PPE Example Single Layer of Arc Rated

FR Clothes ATPV 8cal/cm2

Cotton Undergarment Safety Glasses Arc Flash Face Shield Hearing Protection Leather Work Boots Hand Protection Arc Rated Balaclava *

Class 3 PPE Example Multi Layer Flash Suit

(ATPV 25cal/cm2) Flash Hood Cotton Undergarment Safety Glasses Hearing Protection Hand Protection Leather Work Boots

Class 4 PPE Example Multi Layer Flash Suit

(ATPV 40cal/cm2) Flash Hood Cotton Undergarment Safety Glasses Hearing Protection Hand Protection Leather Work Boots

Safety Watch Job is to observe the

activities and render aid to the qualified person within the arc flash boundary should it be needed.

Situational PPE Each job may bring

about new PPE requirements based upon the situation

What does NFPA 70E mean to you? PPE requirements for you to follow for your jobs. Safe Work Practices to follow. Additional Training Work restricted to “qualified” personnel. Schedule repairs when equipment may be de-

energized Contractors MUST meet or exceed your Safety

Programs

Sample Arc Flash

Typical Arc Flash Burn Only you can put your

PPE on.

Potential Fatal Current The threshold for perception is about 100 microamps

(0.0001 Amps). National Electrical Code (NEC) considers 5 milliamps

(0.005 Amps) to be a safe upper limit 30 milliamps (0.03 Amps) is considered a potentially

fatal current for humans

*Assumes AC power at 60Hz. DC requires about 10x as much.

Shock Hazards NFPA and OSHA both require us to control shock hazards

as well as arc flash hazards.

Working in and around energized electrical equipment is no joking matter

Dielectric Gloves Dielectric Gloves save lives when worn.

So How Do I Do My Job?? Prior to work; determine arc flash & shock hazard. Notify appropriate personnel – check in at all control

rooms Complete site safe work permit Secure PPE Add locks after site personnel have begun LOTO. Secure workspace barriers. Ensure proper illumination. Complete task in accordance with safety guidelines.

For assistance with your electrical safety needs contact:

BPC International Inc. Jeff Platter 888-962-4327 or 918-663-7833 jplatter@bpcintl.com www.bpcintl.com Our Professional Engineers are registered in over 30 states

to meet your needs.