This large multinational satellite services provider has specified the Fibrelite Trenwa partnership trench and cover system for their latest satellite earth station antenna facility in the U.S. The partnership system combines...Read More
A top ranking university in Cambridge, MA, has recently turned to Fibrelite for the replacement of steam manhole covers within the Business School campus. The university, which is built on a large steam distribution network, had decided to seek an alternative to their existing covers due to their concerns regarding public and staff safety. Traditional, cast iron steam manhole covers can reach extremely high surface temperatures due to the conduction of heat from within the manhole. Furthermore, removal of heavy, cast iron covers often puts the operator at risk of back and shoulder injuries.
Initially, the university decided to replace the two manhole covers that were located outside the campus daycare center centre to eliminate the hazards presented by hot steam manhole covers.
The thermal gradient properties of Fibrelite’s composite steam covers significantly reduce the heat transfer from a steam vault to the surface of the cover. Typically, the surface temperature of the cover will be slightly above the ambient temperature at street level even when subjected to extremely hot temperatures on the underside. Fibrelite’s composite access covers have been tested to temperatures up to 400°F while still maintaining their “cool to touch” properties and ability to support vehicular loads.
The high steam pressure within the manholes, often caused by flooding of the vaults, meant that the covers needed to be fixed in the frame to prevent displacement. Fibrelite’s tamper-proof lock system provided a perfect solution for this.
Since installing Fibrelite steam covers, the university has experienced significant reductions in heat transfer from the vault to the manhole surface. Further installations across the campus have now been scheduled as part of a replacement program for numerous 36″, 30″ & 24″ steam covers.