Preventive Maintenance Scope of Coverage
Comstock Brothers Electric Company will provide all safety equipment, tools, labor, supervision and documentation necessary to conduct, interpret and document the following scope of coverage. These services are a part of an TEGG Preventive Maintenance Program and as a system are proprietary to TEGG and Comstock Brothers Electric. All of the testing and maintenance will meet or exceed the standards of OSHA, NFPA, NEC, NETA and IEEE. These services will be preformed annually, at a minimum and while your electrical distribution system is energized. All work will be done by qualified licensed electricians
Infrared Thermo-graphic Imaging Service:
Measure (utilizing state-of-the-art instrumentation) to identify and document temperatures that exceed NFPA Standard 70B recommendations, i.e., high resistance electrical connections, current overload, defective circuit breakers and/or defective insulator conditions. This service is used to reduce the risk of brownouts and blackouts, as well as safety and fire hazards.
Ultrasonic Service:
Measure and record sound waves and/or vibrations that are above audible sound (16-18 kHz). This service is used to complement the infrared service and determine if corona discharge, tracking, arcing and vibration are present and to assure the quality and integrity of your electrical system.
Grounding Service:
Verify ground system is in compliance with ANSI/NFPA & NEC. Perform fall-of-test potential test in accordance with IEEE standard 81 on the grounding system. Determine resistance between grounding system and all major electrical equipment frames, system neutral, and/or derived neutral points.
True RMS Voltage and Current Service:
Capture and record the square root of the average square of the instantaneous magnitude of the voltage and current. This service is used to determine if the correct voltage and current is present to properly operate your equipment and optimize its life cycle. This service will be performed on all incoming switchgear and on any component that an anomaly is present.
Voltage Drop Service:
Measure and record the difference of voltages at the two terminals of passive impedance. This service is used to determine if your electrical components, i.e., circuit breakers, contact surfaces, etc., are operating properly to reduce hazards and equipment destruction. This service will be performed on all incoming switchgear and on any component where an anomaly is present.
Voltage and Current Harmonics Service:
Capture and record Total Harmonic Distortion-Voltage (THDV) and Total Harmonic Distortion-Current (THDC) that exceed IEEE recommendations. This service is used to determine if your harmonic contaminations are within tolerance levels. In addition, this service is designed to assure accurate power (kW) charges and to minimize the risk of damage to microelectronic equipment, transformers, circuit breakers, motors, etc. This service will be performed on all incoming switchgear and on any component where an anomaly is present.
Power Factor Service:
Measure and record the ratio of the circuit power (watts) to the circuit volt-amperes. This service is used to determine if you are paying increased costs to your utility company because your power factor is in a higher rate schedule. In addition, correcting a poor power factor situation may allow you to expand your electrical system?s capacity without costly system additions. This service will be performed on all incoming switchgear and on any component where an anomaly is present.
Visual and Mechanical Inspections:
Interior and exterior of all components will be inspected to ascertain, and if necessary, make certain adjustments to ensure that its performance remains within specified limits. We will also identify corrosion, rust and discoloration, leaks, safety hazards, applicable electric code violations, grounding, physical damage and the general condition of components.
Phase-Balance Service:
Test to assure that the phases in your electrical system are balanced. This service is used to address unbalanced components that increase power-quality problems, total harmonic distortion as well as increased temperature rise of devices and current-carrying conductors. This service will be performed on all incoming switchgear and on any component where an anomaly is present.
TEGG Task 6.0 Maintenance Software:
TEGG Task allows the user to have access to all component information, maintenance history, problem history and equipment tree views that exist in any facility they own.
Equipment Nameplates:
Compare equipment nameplate data with drawings and specifications.
Remove Covers:
Remove and replace covers on all Electrical System Components, where applicable.
Inspection:
Inspect physical, electrical, and mechanical condition. This service will be performed on all incoming switchgear and on any component where an anomaly is present.
Check Tightness:
Torque all connections and terminations to applicable specifications. This service will be performed on all incoming switchgear and on any component where an anomaly is present.
Installation:
Verify appropriate anchorage, required area clearances, physical damage, and correct alignment.
Mechanical Indicators:
Inspect all mechanical indicating devices for correct operation and indication.
Analysis:
Compare test results and trends in order to determine appropriate actions to minimize the likelihood of an unscheduled business interruption or safety hazard.
One-Line Drawings:
Make notations on, or changes, to existing one-line drawings. Develop an accurate equipment tree that can be used in the development of one line drawing?s. This service will be performed on all incoming Switchgear unless the customer requests a more in depth study.