What NFPA 70 E Electrical Safety Really Means

What NFPA 70 E Electrical Safety Really Means to your Customers Presented by: Philip Allen Your trusted partner for productive safety

TOPICS Where How does OSHA fit in? What Why NFPA 70 E is going? 2018? is safety and how is it sold? is electrical equipment maintenance such a big deal? Predictive Q&A Your trusted partner for productive safety vs Routine maintenance

NFPA 70 E/CSA Z 462 Highlights Finally a mature standard New 2018 version—CSA Z 462 Identical Maintenance is electrical safety Better understanding of incident energy More reliable power systems and productivity Added “permanently mounted test instrument” More risk based--expanded risk assessment & RCH section Utility power plants Your trusted partner for productive safety

What does Risk-Based Mean? Compliance & Process verses culture “Under normal operating conditions, enclosed energized equipment that has been properly installed and maintained is not likely to pose an arc flash hazard. ” NFPA 70 E 100 OSHA “Additional Measure” Hazard risk analysis for exception UL-1436 Your trusted partner for productive safety introduced a SIL 3 reliability standard

Arc Flash Causes 1) Dropped tools, screws, nuts and bolts 2) Racking out switchgear circuit breakers. 3) Racking out MCC buckets 4) Voltmeter testing Your trusted partner for productive safety

Survey Results Improved electrical safety due to the following: More training. . . . 66. 2% Incident Energy Management. . . . 23. 5% Program Controls. . . 20. 1% Engineering Controls. . . 10. 3% Reduced Arc Flash Potential. . . . 41. 3% Permanent Electrical Safety Devices (PESDs). . . 26. 5% Personal Protective Equipment (PPE). . . . 57. 8% Better Overall Safety Culture. . . . 46. 2% Your trusted partner for productive safety

OSHA General Duty Clause gives OSHA authority to enforce to best practices or latest consensus standard such as NFPA 70 E. (a) Each employer -(1) shall furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees; Violations must cite an OSHA regulation Your trusted partner for productive safety

OSHA State OSHA’s AK, AZ, CA, CT, HI, IN, IA, KY, MD, MI, MN, NV, NJ, NM, NY, NC, OR, PR, SC, TN, UT, VI, VA, WY Federal OSHA AL, CO, DE, FL, GA, ID, IL, KS, LA, ME, MA, MS, MO, MT, NE, NH, ND, OH, OK, PA, RI, SD, TN, TX, WV, WI Your trusted partner for productive safety

NFPA 70 B/CSA Z 463 Highlights New 2016 version Insure More proper trip times- [ I 2 * T ] focus on loose connections Guidance on IR inspections Batteries, & UPS Your trusted partner for productive safety

“Properly Installed and Maintained” 130. 1(A)(4) Normal Operation. Normal operation of electric equipment shall be permitted where all of the following conditions are satisfied: (1) The equipment is properly installed. (2) The equipment is properly maintained. (3) The equipment doors are closed and secured. (4) All equipment covers are in place and secured. (5) There is no evidence of impending failure. Maintenance NOW a big part of Electrical Safety Your trusted partner for productive safety

SAFETY IS: The reduction of risk, not the absence of risk. Reducing risk to an acceptable level—different for everyone Risk = Hazard * Probability of exposure Low Risk— 13. 8 KV Switchgear High Risk— 120 VAC outlets Highest Risk—Creating and Electrically Safe Work Condition We sell safety by getting in front of the plant LOTO committees and tell them how they can reduce risk Your trusted partner for productive safety

How to reduce risk: Your trusted partner for productive safety 12

• • • Eliminating the risk Substituting a lower risk Engineering around the risk Awareness of every risk Administrating and governing actions while exposed to risk • Protect workers while exposed to risk Your trusted partner for productive safety 13

Electrical Safety Risk Reduction Open Door Thermography PPE Arc Flash Mitigation Live Work Permit HRG System NFPA 70 E GFCIs Signs PESDs Sequestered Disconnect Your trusted partner for productive safety Current Limiting Fuses Hot Spot Monitoring Remote Racking Arc flash rated MCC & Switchgear

Incident Energy Summary New installs engineer out high incident energy 40+ Cal/cm 2 High incident energy is at the substation and line side of switchgear. Most MCCs are below HRC 2 (8 Cal/cm 2). Most control panels & power distribution are around HRC 1 230 VAC and bus-duct may have high incident energy 11 Cal. daily wear covers workers in most areas Your trusted partner for productive safety

Your trusted partner for productive safety

MAINTENANCE-RELATED CAUSES OF SHOCK & ARC FLASH ACCIDENTS… 1. 2. Carelessness Worn or broken insulation Exposed live parts 4. Loose connections 5. Improper Maintenance 6. Obstructed disconnect panels (Working Space) 7. Wet locations near panels 8. High Voltage cables 9. Static electricity 10. Damaged tools 3. Your trusted partner for productive safety Electrical Engineering Portal, 2016

PREDICTIVE VS ROUTINE MAINTENANCE Risk priority is the primary driver Predictive Maintenance can often be the lower-cost option Predictive Maintenance sometimes results in longer intervals between maintenance The “changing the oil in your car” example Your trusted partner for productive safety

CAUSES OF HOT SPOTS Contaminated connections Lack of surface area on connection points Loose connections Improper grounding Incorrect crimping of connections Improper cable training Your trusted partner for productive safety

INSULATION FAILURES DUE TO THERMAL OVERLOADS ON XFMRS AMPACITY is a key term Expected life of industrial XFMRs is 180, 000 hours Overheating of XFMR windings degrades expected life EXPONENTIALLY! For example, a 1350 C hotspot on a industrial XFMR degrades the life expectancy by 10 TIMES Your trusted partner for productive safety This is what’s behind the cover…

A PREVENTABLE ACCIDENT… Your trusted partner for productive safety

A PREVENTABLE ACCIDENT… Your trusted partner for productive safety

A PESD-PREVENTABLE ACCIDENT… Your trusted partner for productive safety

CLOSING THOUGHTS QUESTIONS? Your trusted partner for productive safety