The material shall be stored as indicated in the Performa Invoice and shipping marks on the cases.
Follow Manufacturer’s recommendation |
| Check expansion joints for freedom of movement. |
| Check tightness of accessible bolted bus joints by calibrated torque wrench method. Refer to manufacturer’s instruction for proper torque values. |
Check that the welds are as strong as the bus itself. An aluminum insert (used as a backing plate for welding the sections together) between both sections of welded bus will ensure the mechanical strength of the jointed section is similar to that of the un welded portion.
Follow Manufacturer’s recommendation |
| Check that the filler material is the same as the aluminum bus. |
| Check that the filler material used is not which contains silicon or magnesium because they reduce the conductivity of the joint material to 40% or 30% respectively. |
| Measure the resistance of the weld joint using a 100 Amps digital low reading ohmmeter and compare with an equivalent section of un welded bus portion. |
| Measure bus joint resistance shall be les than 0.5 micro-ohms. |
| Check that the connectors for aluminum (ACSR) conductors are filled with an oxide inhibiting and sealing compound such as Burndy PENETROX. |
| Check that the compression type lugs are used for overhead line connections to equipment furnished with pad type terminals. |
| Check that the compression lugs or splices used for connections of insulated or covered cables to overhead lines have a closed barrel or solid center stop to prevent ingress of water into the insulated cable. |
| The Contractor shall provide lifting procedure prior to installation of aluminum bus pipe for review and approval. |