Attachment 2: Specific Tasks

Scope of Work: Specific Tasks and Services
Electrical equipment (including, but not limited to switchgears, switchboards, distribution panels, motor control centers, and all related components) is inspected, tested, and either maintained, or calibrated. All work must be documented. The National Electrical Testing Association (NETA) provides guidance which is considered best practice for the maintenance of electrical equipment; these practices should be followed to the extent possible. The Contractor shall perform testing and preventive maintenance upon facility electrical components using the most current addition of the National Electrical Testing Association (NETA), Maintenance Testing Specifications. The Contractor is to perform the following tasks:

(a) Use lint-free rags to clean conductors, contact points between the circuit breakers and main buss bars, buss bars and interior of the electrical equipment. Use a vacuum cleaner to remove large debris; compressed air is not to be used for this purpose. Visually inspect for signs of overheating, misaligned contacts, damaged insulation, or lose lugs.

(b) Replace defective or missing panel screws, bolts, fastening devices and hardware with like. Replacement screws/fasteners shall be from the Original Equipment Manufacturer (OEM) or equal. Self-tapping machine screws may be used if OEM screws or equal are not available or if existing screw opening(s) will no longer accept the OEM or equal fastener (COR must approve the use of self-tapping screws). The Contractor shall not mix screw head types and shall match OEM head type whenever possible. Replace / install knock out plugs and filler plates in junction boxes, motor control centers, panels and similar items.

(c) Lubricate all moving parts with manufacturer’s approved lubricants.

(d) Test and exercise circuit breakers located in switchgears, switchboard, and distribution panels to ensure operation under overload, and short circuit conditions. NOTE: All molded case circuit breakers (including frames size 225 amps or less) must be tested to determine if contacts open and reclose when breaker is manually tripped and restored. All panels are to be tested including emergency panels. If no failures are encountered and the test is fully documented.

(e) Test ground fault protection devices for proper function if they are installed in the Facility Electrical Power System.

(f) Inspect and tighten ground connections. Test ground resistance for the entire facility grounding system. Any method of ground resistance must be considered acceptable if it can verify continuity and quantify the impedance to ground, to include but not limited to fall-of-potential, induced frequency, and clamp on testing. If initial tests indicate a problem or concern (e.g., ground resistance greater than 25 ohms), a more detailed test must be performed using fall-of-potential or 3-point test. Where installed, the lightning protection system must be inspected and tested for continuity to ground, ground resistance and certification in accordance with Underwriters Laboratory (UL) standard 96A.