Richborough Power Station Phase 1

Demolition project background

Constructed in 1962 as a 342mw coal fired station, Richborough Power Station utilised coal from the Kent coal fields. The station was, following a change in policy, converted to oil in 1971. Between 1996 and 2000 the station underwent an asbestos removal and partial demolition program; this included the removal of all machinery and equipment associated with power generation.The area remained largely vacant after 1996; however an area of land remained occupied by EDF Energy whom currently operates a live electrical sub station linked to an electricity distribution network.

Specification

  • To Design and implement working procedures to allow the works to be carried out within 6m of a major live national grid 300mW sub station.
  • Carry out a fully intrusive type 3 asbestos survey of the structures to be demolished, and deal with the removal of all asbestos based materials identified within the survey
  • Liaise with utility suppliers to arrange and confirm isolation and termination services to the structures.
  • Strip facade of 30m high Turbine Hall
  • Carefully separate and demolish the canteen, office block, Transformer bays and switch rooms to top of slab level
  • Break out hardstandings at Transformer Bays
  • Break out foundations / pile caps to the Transformer Bays to a depth of 1.5m
  • Removal of suspended slabs over the switch room basement
  • Crush and stockpile concrete and hardcore arisings
  • Backfill basement areas to an engineered specification
  • Form a 4,200 m² pilling matt to facilitate the next phase construction work
  • Re- clad the exposed separation point to match the existing building

Achievements and Successes

  • Pre Contract team identified potential issues demolishing a structure, due to the potential weakening of a sheer wall as a result of earlier demolition works.
  • We proceeded to add stainless steel tie bars to the wall 30m up from ground level giving it the reinforcement required to proceed without compromise to health and safety on site.
  • Completed the contract on programme and to the clients satisfaction
  • Zero accidents and working days lost