Are you with an AIRLINE ? Send me your email - we have had our engineers literally create a specialized tool for this - it uses White LEDs for illumination ( white as in white light - like a flash bulb ) ( IE but without the heat & spark potential , low voltage ) & have attached an Olympus / or SONY mini - CCD camera head & remote monitor. It also has wearable glasses with monitors builtin - IE like a HUD or virtual reality glasses- It is used specifically for inspections in hazadous areas - Boeing uses these to inspect fuel tanks as well.