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6. Preventive and Predictive Maintenance Standard

Recommended Practice For Equipment Maintenance - NFPA 70 B
As a participant in this course, you will be provided information to use maintenance techniques and requirements properly that avoid potential electrical hazards. The course specifically provides techniques to prevent shock and fire hazards associated with the electrical equipment maintenance. You will gain a greater knowledge of how to prevent hazards such as burn and shock and you'll learn how to recognize potential electrical hazards. This course also covers maintenance requirements for substations, control systems, power, cable and premise wiring systems and provides proven test methods and troubleshooting techniques. The objectives of this course will enable you to understand how proper predictive and preventive maintenance techniques can provide greater production and safety to you and your company.

Volume 1

Topics include:

• Why a preventive and predictive maintenance standard was developed
• Preventive maintenance recommendations
• Test standards for maintenance requirements
• Test methods for maintenance recommendations
• Effects of a preventive maintenance program
• Record keeping
• Maintenance work center
• Diagram and data
• Ventilation requirements
• Emergency procedures

Volume 2

Topics include:

• Test and maintenance
• Testing and test methods
• Acceptance test and maintenance
• Over-potential test
• Low voltage insulation test
• Low voltage circuit breaker test

Volume 3

Topics include:

• Insulation testing
• Dielectric absorption test
• Polarization index test
• DC high pot test
• Step voltage test
• Acceptance test voltage
• Maintenance test voltages
• AC test

Volume 4

Topics include:

• Infrared inspection, test and surveys, advantages of infrared, infrared-frequency and procedure for testing, normal reference temperature
• Procedure device testing-circuit breakers, fuses and relays, inspection frequency and procedures
• Testing procedures for transformers

Volume 5

Topics include:

• Ground resistance testing, equipment ground, grounding electrode
• Ground loop impedance test
• Impedance testing of grounding system
• Grounding of equipment to provide protection for maintenance personal
• High voltage grounding
• Ground requirements while troubleshooting
• Miscellaneous equipment checks

Volume 6

Topics include:

• Substation – inspection frequency
• Switchgear inspection frequency
• Enclosure requirements, leakage, rust or water marks, condensation, temperature, droplets, dust patterns, deposit patterns, heating, insulation, electrical distress, arc chutes, boundaries of adjoining insulation, boundaries between insulating members and grounding structures
• Splices and junction
• sharp edges
• Corona
• Delamination
• Circuit interruption, air circuit breakers
• Bolted circuit breakers
• Insulation
• Contacts
• Arc interrupters

Volume 7

Topics include:

• Transformer inspections – current, voltage, temperature, leaks, general condition, turns-ration, polarity tests, fault-gas analysis, sample tests
• Power cable – visual
• Aerial installation
• Raceway installation

Volume 8

Topics include:

• Enclosures – inspections, openings, ventilation
• Motor control preventive maintenance table
• Busbar
• Wiring
• Terminals
• Connections
• Loose connections
• Special operating environments
• Power control wiring
• Mechanical operation
• Contacts
• Arc-chutes
• Magnetic solenoids...

Volume 9

Topics include:

• Motor overload relays – thermal type, motor data, NEAM design application, torque and speed operation of motor, nameplate info application, inspection and replacement
• Pilot and miscellaneous control devices
• Routine maintenance
• Interlock
• Reasons for maintenance

Volume 10

Topics include:

• Molded case circuit breakers
• Phase fault current relays
• Ground fault protection
• Fuses less than 1000 volts, fuses greater than 1000 volts
• Rotating equipment – rotor and stator windings, brushes, bearings
• Lighting
• Wiring devices
• Portable electrical tools
• Protective device testing
• Electro static discharge (ESD), inspection frequency table for equipment and items

1. Understanding Basic Electricity for Electrical Safety
2. OSHA Electrical Requirements - CFR 1910 Subpart S., Below 600 Volts
3. Guide to Electrical Safety Work Practices - NFPA 70 E
4. Guide to the National Electrical Code for Field Use - NFPA 70
5. Grounding Bonding Shielding
6. Preventive and Predictive Maintenance Standard - NFPA 70 B
7. Industrial Machines - NFPA 79
8. OSHA Electrical Requirements – CFR 1910.269 Above 600 Volts

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