“…The Controller immediately finds the type of problem that occurred and rectifies it with the help of the other attributes mentioned. If the tanker is damaged, then it must be completely replaced with the nearby tanker, which is known by calculating the shortest path (9)(10)(11) from the source tanker. Otherwise, if the tanker is in repairable condition, the controller identifies the type of repair that occurred, calls the specialist for that type of repair, and rectifies the problem.…”