We all know the feeling, you turn on the hot water tap to wash your hands and you immediately regret it as you get a splash of scalding and painful hot water. Scalding hot water injuries should not to be overlooked, as they account for severe injuries and sometimes leading to fatal ones.
Last autumn the Health and Safety Executive issued new guidelines to care homes instructing them to install temper proof thermostatic mixing valves (TMV). This new set of guidelines came in the wake of another tragic fatal injury from scalding water.
The Scottish Building Standard already requires all new property developments and major refurbishments to install thermostatic mixing valves. Although not compulsory in the rest of the UK at the moment the Building Regulations in the UK are working towards adding it in a future update.
To reduce the risk of Legionella, it is required to keep hot water (for example within a hot water tank) at temperatures of between 60 and 65 degrees Celsius. At these temperatures it is believed that the Legionella virus does not survive. Nevertheless, water coming out of the tap at that temperature is too hot and should be mixed with colder water first.
Public buildings and communal hot water systems are predominantly in need of a TMV. This is due to the requirement of keeping the hot water at extremely high temperature all the way to the point of delivery to reduce the risk of Legionella.
Young children and old people are the most at risk from scalding water injuries. Hundreds of young children are admitted every year to hospitals in the UK with severe burns from hot baths. Their extra sensitive skin gets burned easily and they may be left with permanent scars. Similarly, older people may not feel the heat of the water fast enough or react fast enough to turn off the hot water tap, leading to severe burns. The same is true for mentally or physically impaired people that have slow response time and slow reactions to pain.
There are broadly two types of thermostatic mixing valves that are suitable for installation and certified:
TMV2 are thermostatic mixing valves that are designed for domestic premises but are suitable for most other circumstances. A risk assessment must be undertaken to confirm whether the premises are used by disabled or vulnerable people.
TMV3 valves are engineered to tighter performance and provide better safety and quality. They are required in all installations in healthcare projects or on premises for disabled or vulnerable people (such as mentally or physically challenged people).
Manufacturers of thermostatic mixing valves recommend that they are installed only by qualified plumbers. The valves are positioned between the hot and the cold pipes to prevent the water coming out of the tap at an extremely high temperature. Most common TMVs are installed under the bath or under the hand basin for a simple installation. Most kits are sold with tailpieces which include isolation, a strainer and test points. Some kits have flexible connectors and isolating filter vales to deal with space limitations. - 15431
Last autumn the Health and Safety Executive issued new guidelines to care homes instructing them to install temper proof thermostatic mixing valves (TMV). This new set of guidelines came in the wake of another tragic fatal injury from scalding water.
The Scottish Building Standard already requires all new property developments and major refurbishments to install thermostatic mixing valves. Although not compulsory in the rest of the UK at the moment the Building Regulations in the UK are working towards adding it in a future update.
To reduce the risk of Legionella, it is required to keep hot water (for example within a hot water tank) at temperatures of between 60 and 65 degrees Celsius. At these temperatures it is believed that the Legionella virus does not survive. Nevertheless, water coming out of the tap at that temperature is too hot and should be mixed with colder water first.
Public buildings and communal hot water systems are predominantly in need of a TMV. This is due to the requirement of keeping the hot water at extremely high temperature all the way to the point of delivery to reduce the risk of Legionella.
Young children and old people are the most at risk from scalding water injuries. Hundreds of young children are admitted every year to hospitals in the UK with severe burns from hot baths. Their extra sensitive skin gets burned easily and they may be left with permanent scars. Similarly, older people may not feel the heat of the water fast enough or react fast enough to turn off the hot water tap, leading to severe burns. The same is true for mentally or physically impaired people that have slow response time and slow reactions to pain.
There are broadly two types of thermostatic mixing valves that are suitable for installation and certified:
TMV2 are thermostatic mixing valves that are designed for domestic premises but are suitable for most other circumstances. A risk assessment must be undertaken to confirm whether the premises are used by disabled or vulnerable people.
TMV3 valves are engineered to tighter performance and provide better safety and quality. They are required in all installations in healthcare projects or on premises for disabled or vulnerable people (such as mentally or physically challenged people).
Manufacturers of thermostatic mixing valves recommend that they are installed only by qualified plumbers. The valves are positioned between the hot and the cold pipes to prevent the water coming out of the tap at an extremely high temperature. Most common TMVs are installed under the bath or under the hand basin for a simple installation. Most kits are sold with tailpieces which include isolation, a strainer and test points. Some kits have flexible connectors and isolating filter vales to deal with space limitations. - 15431
About the Author:
Tal Potishman, editor of Heating Central, publishes content on efficient boilers, Croydon plumbers, central heating, underfloor heating and solar thermal. He specializes in helping save money by advising on efficient heating
