Patent ID: 8333170

Claim:
A buckstay system for a wall of a steam generator having a first wall section which meets a second wall section at an angle to form a corner, the system comprising: a plurality of horizontal buckstay assemblies each comprising a horizontal buckstay extending generally horizontally across each wall section such as to form a connected pair with an adjacent horizontal buckstay at the said corner, an elongate tie bar formation extending across each wall section such as to form a fixedly mounted pair with an adjacent tie bar formation at the said corner, and an anchor assembly associated with each horizontal buckstay and providing engagement means by which each horizontal buckstay engages with a respective tie bar; and the system further comprising a plurality of vertical buckstays connected to support and space said horizontal buckstay assemblies vertically up the steam generator; wherein each said horizontal buckstay is split to comprise at least two rigid elongate horizontal buckstay elements mounted together to be relatively slidable in a buckstay longitudinal direction; vertical buckstays are provided in the vicinity of some or all of the points where horizontal buckstay elements of a horizontal buckstay are slidingly engaged; and at a sliding engagement point between two horizontal buckstay elements a vertical support is provided having a fixed engagement with one said horizontal buckstay element, and having a sliding engagement with the other said horizontal buckstay element whereby the other said horizontal buckstay element may slide horizontally relative to the vertical support and relative to the one said horizontal buckstay element.