When the reactor assembles, Buildcraft kinesis pipes do not receive a block update, leaving them disconnected. This is primarily an issue when loading the world, as they become disconnected and must either be replaced or receive a block update to reconnect to the reactor. However, it also happens if you are making changes to the reactor.

Using Dark Trilogy, TE's energy conduits are not available. Current workaround is to use an energy cell directly adjacent the reactor power tap. A better solution would be for reactor components which attach to external cables, pipes, tubes, etc to emit a block update any time their connectability changes.

This is a problem with Buildcraft. Buildcraft blocks should be listening for tile-entity updates via the onNeighborChange event, as well as block updates.

Firing a block update (onNeighborBlockChange) is meant for when the actual ID/metadata of the block changes. This causes all six blocks around the power tap to receive the update event. Tile-entity updates via onNeighborChange can be targeted just to the interested neighbors.

An example of an onNeighborChange handler is here:

https://github.com/erogenousbeef/BigReactors/blob/master/src/main/java/erogenousbeef/bigreactors/common/multiblock/block/BlockReactorPart.java#L218