By far the biggest single threat to ceramic pipes in the process industry is temperature change. When a pipeline is subjected to a rapid change in temperature on a regular basis, the ceramic body can quickly be destroyed by thermal shock. Hathernware is the only ceramic material suitable for use in areas which are subjected to intermittent discharges of hot and cold effluents such as hospital sterilisation units, boiler blow down drains, laboratories, food processing and beverage production drainage systems with temperature changes of up to 120°C.
Through extensive research and development Naylor have been able tospecify, select and blend ceramic materials to withstand these sudden temperature changes with substantial resistance to chemical attack. Only the highest performance ceramics are used at Naylor to manufacture components for use in specialist underground drainage systems and also in industrial applications.
In 2006 Hathernware was introduced into the New Zealand market as a result of the continuous failure of traditional drainage materials in areas such as Rotorua, where hot springs can produce ground temperatures of up to 100°c. Rotorua District Council agreed to install a 75 metre trial line of Hathernware pipe at Ohinemutu in an attempt to resolve such issues. With extremely high ground temperatures affecting the pipes external surface coupled with a large reduction in effluent temperature internally, thermal shock resistance was a key requirement. Taking into account the additional emission of corrosive gasses such as hydrogen sulphide, one would expect the pipe material to show some form of wear and tear after 18 months. However upon excavation of the pipe after this period, a full inspection showed that the line remained in perfect condition. After many years of extensive searching by Rotorua Council, a solution had finally been found in the form of Hathernware. As a result, a further kilometre of Hathernware pipe was installed in Ohinemutu and to this day continues to operate successfully.
The major advantage of Hathernware becomes apparent when analysing lifecycle costs, in particular maintenance costs. In industrial situations it is often the case that the replacement of damaged pipe leads to loss of productivity that can easily outweigh initial costs. Drainage pipes are typically installed under the production floor slab, resulting in a costly exercise when needing to access pipe. With its proven durability in highly aggressive environments and excelling in resistance to both chemical and thermal shock, Hathernware is the range to use when failure is not an option!