received within the body of the panel to monitor temperature within the metal of the panel itself and pressure sensors installed proximate the inlet and outlet of each panel coolant fluid circuit which circuits are preferably periodically automatically tested to check for leaks in the coolant circuits in addition the system preferably includes temperature and flow sensors for monitoring the furnace panel coolant circuit for temperature and flow fluctuations respectively which may be indicative of leaking cooling circuits the system triggers visual and or audible alarm means to alert a human operator of an apparent coolant fluid leak situation application_number US 99946407 A description referring to the drawings wherein like or similar references indicate like or similar elements throughout the several views there is shown in fig1 a furnace panel fluid coolant leak detection system according to the present invention identified generally by reference numeral 10 the system includes a high energy typically industrial furnace 12 such as a metal smelting furnace a blast furnace an eaf or the like furnace 12 is shown in top plan view in fig1 and includes a plurality of fluid cooled wall panels 14 described in greater detail hereinafter several of which are omitted for clarity of illustration a typical furnace may be about 15 30 feet in diameter and may comprise from as few as about 4 panels to as many as about 40 panels although the furnace dimensions and number of panels may vary and will be dependent upon the requirements of the furnace installation system 10 further comprises a plurality of electrical junction boxes 16 in electrical communication with a plurality of sensors that continuously monitor and provide feedback regarding physical conditions of the panels.