Shine little glow-worm, glimmer, glimmer
Glows like an incandescent wire
To meet the nighttime power needs of Chile’s Minera Escondida, a copper mine with the largest output in the world, Nexans developed an outdoor mining cable whose cores are wrapped with a fluorescent tape covered by a halogen-free TPU (Thermoplastic Polyurethane) sheath which makes it glow in the dark.
Turns on the AC and the DC
Mining uses various nonstop equipment like feeding cranes, shovels, drills, and dredges. Accidental crushing by trucks or other machines limits their life, and can bring production to a halt, generating financial losses.
Who it took the shine to
Although designed for mining, other applications include any power cable requiring night visibility and a UV-protected transparent sheath, e.g. cables installed on mountainsides.
When you gotta glow, you gotta glow
As early as 1996, experiments were done with fluorescent pigments incorporated in rubber sheathing; however, they could not glow for more than 2 hours in darkness and had a lifetime of two months. When Minera Escondida asked Madeco for fluorescence or reflectivity in future mining cables in 2007, reflective tape was tried but needed protection against highly abrasive ground in the mines. The ideal combination was a newly developed transparent Lubrizol TPU covering a Korean fluorescent tape which provided good glowing permanence for up to five years.
Lights the path below, above
Fully ICEA (American standard) compliant, Nexans new fluorescent cables are visible all night, and even more visible during the day, thus preventing serious and fatal accidents. Transparency of the outer sheath also makes it possible to immediately detect breaks which cause electrical failure.
Shine little glow-worm, glimmer, glimmer: Music by the Mill’s brothers