Dielect_v3.doc

Statement of Work Di-Electrical Testing/Inspection of Bucket and Line Trucks A. Perform Visual Inspection of accessible areas including:

1. Outriggers; Pads, structure, welds, bolts, hoses, cylinders, valves, pins and retainers.

2. Chassis; Truck frame, aerial sub-frame, suspension, PTO, pintle hook, and components of the brake, steering, electrical, air, hydraulic, exhaust, and cooling systems.

3. Pedestal; Mounting bolts and welds, pedestal structure, diagonal brace, attachment welds or pins, hydraulic swivel joint, hydraulic components, swing drive gearbox mounting bolts, backlash between swing pinion or bullgear, electric collector ring and brushes and lower control operation.

4. Rotation Bearing; Upper and lower bearing attachment weld and bolts, vertical movement of bearing, and proper torque on accessible bearing bolts.

5. Turntable; Turntable structure, bucket leveling cables, leveling cylinders, compensating chains or sprockets, and hydraulic system components.

6. Lower Boom; Boom structure, welds, lift cylinders and attachment, hydraulic system, leveling cables or rods, upper or extend cylinder and attachment, pushlinks, boom rest supports, tie-down straps, lower insulator and mounting, extension roller assembly and wear pads.

7. Elbow; Elbow structure, hydraulic hoses and leveling cables.

8. Upper Boom (Extension); Structure, welds, leveling cables or rods, wear pads, upper insulator and mounting, hydraulic lines and components, jib structure and mounting, tool circuit hoses and fittings, pole claw arms and mounting brackets.

9. Platform (Bucket); Mounting bracket bolts, leveling system, exterior condition, control operation and hydraulic lines and components.

10. Digger and Auger; Digger mounting arm and housing, gearbox, auger, digger wind-up bracket or rope, auger stop bracket, lock mechanism and control operation.

11. Winch; Mounting brackets, bolts, pins; gearbox, hydraulic components, load line, and controls.

12. General; Load rating chart, electrical hazard placards, MADDDC placards and upper or lower control operation placards.

The visual inspection includes removal of inspection cover plates as necessary to do a thorough job.

B. Perform Weight Load Test to test the fiberglass and steel structures. Test shall be according to manufacturer specification.

C. Perform Torque Testing of all critical fasteners in accessible areas including upper and lower rotation bearing, swing gearbox, boom connections, and platform mounting.

D. FUNCTIONAL and OPERATIONAL TEST Contractor will do a functional and operational test to check the operation of controls, bearings, pins, bushings, cylinders, holding valves, bucket leveling mechanisms, outriggers, etc.

E. DIELECTRIC TEST

Contractor will perform a dielectric test up to 100kV as specified by ANSI standards. This test verifies the electrical insulating strength in the FRP upper and lower booms, bucket, liners, FRP extensions on digger derricks, tool circuits, and upper control system. Perform this test in accordance to OSHA/ANSI standards below:

OSHA 1910.67 (c) (3) Standard:

“Electrical tests.” Electrical tests shall be made in conformance with the requirements of ANSI A92.2 – 2001, Section 5. However, equivalent DC voltage tests may be used in lieu of the AC voltage test specified in A92.2 – 2001. DC voltage tests which are approved by the equipment manufacturer or equivalent entity shall be considered an equivalent test for the purpose of this paragraph (c) (3) ANSI A9.2-2001 Standard:

5.3 Electrical Tests For Insulating Aerial Devices

…5.3.2 Qualification Test Each insulating aerial device shall be tested in accordance with Section 5.4.2 to insure compliance with the Electrical Qualification requirements as appropriate. If the aerial device is altered or modified by the installer after the Qualification Test is performed, the original Qualification Test is not valid.

F. The Tester will provide the customer with detailed test sheets and certification labels.

G. The trucks require an annual (12 month) dielectrical test per OSHA standards.