Large pressurized tanks, pipelines, mixers and other sanitary vessels are brightly illuminated with the new MetaClamp® ESL39 luminaire from L.J. Star Incorporated. The use of a high intensity discharge bulb provides an equivalent of 300 watts of intense light though a Metaglas® safety glass lens. Used on six-inch and greater and sanitary ferrules, these powerful luminaries mount directly onto virtually any vessel. They are designed for continuous use up to 10,000 hours on a single bulb and are available with a 40-degree beam angle for illumination of specific areas or a 90-degree wide angle that uniformly illuminates the entire vessel.