in an enclosed track prevents the inspection camera cabling 220 from becoming tangled and potentially jammed while in operation this guide also serves to protect the angle joint servo motor and provides a sturdy point to strain relieve the umbilical cable the inspection head is linked to the main control console through a multi function umbilical cable 87 shown in fig1 this umbilical cable 87 carries all electrical power control and video signals it additionally contains four small air lines for the pneumatic components the primary electrical cable is internally reinforced with kevlar filler strands for strength the cable also serving as the emergency retrieval cable the additional cameras 50 52 used are preferably positioned on the head to look up and forward on the probe side these cameras 50 52 are used when installing and uprighting the system these cameras 50 52 also provide the operator views when traversing flowslots 13 of the support the lighting and camera operation is preferably controlled by an operator at the computer interface in one preferred embodiment a plurality of proximity sensors preferably eight alert the operator to unexpected or undesirable operating conditions and also enable the computer to assume automatic control over the device further in one preferred embodiment several tapered bumpers preferably made from or coated with delrin u00ae help guide the head through the flowslot and ensure that the proximity sensors will be within an acceptable distance from the edge of the flowslot and to sense.