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138 Frequency of Maintenance Tests These specifications have been developed by the InterNational Electrical Testing Association for use by electrical power distribution system engineers. Copyright 2001 InterNational Electrical Testing Association PO Box 687, 106 Stone Street Morrison, CO Voice: Facsimile: Web: Page 1

139 NETA recognizes that the ideal maintenance program is reliability-based, unique to each plant and to each piece of equipment. In the absence of this information and in response to requests for a maintenance timetable, NETA s Standards Review Council presents the following time-based maintenance schedule and matrix. One should contact a NETA Full-Member company for a reliability-based evaluation. The following matrix is to be used in conjunction with NETA s Frequency of Maintenance Tests table. Application of the matrix is recognized as a guide only. Specific condition, criticality, and reliability must be determined to correctly apply the matrix. Application of the matrix, along with the culmination of historical testing data and trending, should provide a quality electrical preventive maintenance program. MAINTENANCE FREQUENCY MATRIX EQUIPMENT CONDITION POOR AVERAGE GOOD EQUIPMENT RELIABILITY REQUIREMENT LOW MEDIUM HIGH Page 2

140 MAINTENANCE FREQUENCY MATRIX (cont.) Inspections and Tests (Frequency in Months) Multiplier for Inspections and Tests (Multiply Value by Matrix) Section Description Visual Visual & Mechanical Visual & Mechanical & Electrical 7.1 Switchgear & Switchboard Assemblies Transformers Small Dry-Type Transformers Large Dry-Type Transformers Liquid-Filled Transformers Sampling Cables Low-Voltage Cables Medium- and High-Voltage Cables Metal-Enclosed Busways Infrared Only Switches Low-Voltage Air Switches Medium-Voltage Metal-Enclosed Switches Medium- and High-Voltage Open Switches Medium-Voltage Oil Switches Medium-Voltage Vacuum Switches Medium-Voltage SF 6 Switches Cutouts Circuit Breakers Low-Voltage Insulated-Case/Molded-Case CB Low-Voltage Power CB Medium-Voltage Air CB Medium-Voltage Oil CB Sampling High-Voltage Oil CB Sampling Medium-Voltage Vacuum CB Extra-High-Voltage SF Circuit Switchers Network Protectors Page 3

141 MAINTENANCE FREQUENCY MATRIX (cont.) Inspections and Tests (Frequency in Months) Multiplier for Inspections and Tests (Multiply Value by Matrix) Visual & Mechanical Visual & Mechanical & Electrical Section Description Visual 7.9 Protective Relays Electromechanical Electronic Instrument Transformers Metering Devices Regulating Apparatus Step-Voltage Regulators Sample Liquid Induction Regulators Current Regulators Load-Tap-changers Sample Liquid Grounding Systems Ground-Fault Protection Systems Rotating Machinery AC Motors DC Motors AC Generators DC Generators Motor Control Low-Voltage Motor Starters Medium-Voltage Motor Starters Low-Voltage Motor Control Centers Medium-Voltage Motor Control Centers Adjustable Speed Drive Systems Direct-Current Systems Batteries Battery Chargers Rectifiers Surge Arresters Low-Voltage Devices Medium- and High-Voltage Devices Page 4

142 MAINTENANCE FREQUENCY MATRIX (cont.) Inspections and Tests (Frequency in Months) Multiplier for Inspections and Tests (Multiply Value by Matrix) Visual & Mechanical Visual & Mechanical & Electrical Section Description Visual 7.20 Capacitors and Reactors Capacitors Capacitor Control Devices Reactors - Dry-Type Reactors - Liquid-Filled Sampling Outdoor Bus Structures Emergency Systems Engine Generator Functional Testing Uninterruptible Power Systems Functional Testing Automatic Transformer Switches Functional Testing Telemetry/Pilot Wire SCADA Automatic Circuit Reclosers and Line Sectionalizers Automatic Circuit Reclosers, Oil/Vacuum Sample Automatic Line Sectionalizers, Oil Sample EMF Testing Page 5

143 Central Administration Building Mechanical/Electrical Maintenance Services RFP # RFP Questions and Responses 1. What will the maximum off line time that will be allowed before a back-up generator will be required? Response: At this time, 30 minutes will be the maximum down time to take the generator off line. Any longer, a temporary generator will need to be installed. 2. Who is responsible for UPS maintenance and emergency response and repair? Response: Liebert currently has a maintenance contract with the Commission that covers the PDU s and UPS s. 3. Section 5.6 Use of Sub-Contractors (Page 12): Is the use of a sub-contractor required for the electrical testing? The first line implies that the use of subcontractors are an option for the contractor. Response: See response to Question #4 4. Third party testing was removed from the existing contract for the period of 3 years plus two (2) 2-year extensions for a total of 7 years. Is the 3 rd party testing to be included on this contract? Response: Third party electrical testing will be required as specified in the RFP. Electrical testing scheduled in 4/2005 to be revised by addendum to be within the contract term.