Project overview

Fibrelite were approached by Magnox to provide numerous replacement manhole and trench covers to replace the existing degrading concrete and cast-iron covers. This works had to be co-ordinated and delivered within a tight schedule to provide a safe, efficient and consistent solution within the decommissioning work being undertaken at Hinkley Point A.

Key features of Fibrelite covers for this project:

• Best strength to weight ratio available in the market today
• Fully customizable customisable options available as standard
• Reliable – cover load ratings consistent with the requirements of EN 124
• Easy interface – no specialist personnel or machinery required for maintenance/operation post install

Problem

The client established that the pre-existing concrete covering arrangement would be very troublesome long term and had experienced a number of failures across a number of locations/sites causing confidence in these access covers to be questioned. Typically, the existing covers are located in pedestrian and vehicular traffic areas. This lack of confidence had led to large areas being barriered off and exclusion zones put in place. The existing cover material poses a number of difficulties:

• Extreme weight – particularly in the nuclear industry, ease of access for services is imperative. Heavy concrete covers impair this
• Manual handling – the customer was concerned about the risk of injury due to the manual handling of these heavy loads
• Deteriorating performance – the covers were exhibiting high levels of corrosion and structural degradation leading to concerns of fit for purposes application
• The size and complexity of this project deemed that the design would need to be very flexible.