the Coulport armaments base on Loch Long have backed action up to and including strikes - if bosses cannot resolve a row over pay.The depot by the Firth of Clyde is the storage and loading facility for nuclear warheads which are loaded on to submarines based at nearby Faslane.If workers decide on an overtime ban it could play havoc with essential maintenance planned in detail up to a year in advance of each nuclear sub leaving port.Staff involved are employed by three separate private companies