Swedish-owned Roxtec (www.roxtec.com), which has its UK base in Bury, has had its innovative modular cable-seal system tested and approved by London Underground.

Managing director Graham O’Hare said that the multi-cable transit system is the first of its kind to be cleared for use on London’s Tube network; it will allow cables to pass between separate areas while protecting people and infrastructure against a range of hazards.

“We’re delighted that Roxtec can provide a key safety component in transforming and modernising the London Underground network.”

Mr O’Hare added that, if a fire breaks out, the transit system will continue to provide insulation for at least an hour. It can also shield an area against smoke, gas, humidity and dust.

“The Roxtec system could be used in a wide variety of locations across the Tube network, including trackside in relocatable equipment buildings, junction boxes, control cabinets and sub-stations,” said Mr O’Hare.

“Up to six units each can be used in station areas, while one unit of the same size has been cleared for use in tunnels.

“London Underground approval is considered to be the global rail industry’s Gold Standard, as it requires products to meet a higher level than either current Great Britain or EU certification.

“The process took 18 months to complete, during which every Roxtec fire certificate was read and interpreted at a specialist testing facility. Further tests were carried out for smoke density in line with London Underground standards.”