BREEAM LEAK DETECTION
Major Water Leak Detection - BREEAM WAT 3
WaterLeak Detection - BREEAM WAT 2
Sanitary Supply Shut Off - BREEAM WAT 4
Thorne and Derrick have recently developed a new water leak detection system designed specifically to meet BREEAM WAT 2, WAT 3 and WAT 4 assessment criteria.
Please contact one of our BREEAM specialist estimators for a quotation or further information and advice on which system you require to comply with the assessment criteria.
BREEAM SANITARY SUPPLY SHUT OFF - BREEAM WAT 4 SYSTEM
Aim
To reduce the risk of minor leaks in toilet facilities.
Assessment Criteria
The following demonstrates compliance:
1. Solenoid valves are installed on the water supply to each toilet area in the building and the flow of
water through that supply is controlled by a link to either:
•Infra-red movement detectors within each toilet facility OR
•Sensors or switches placed at or on entry doors to each facility.
Shut-off systems may control combined toilet areas, such as male and female
toilets within a core.
Small water leaks can result in significant losses over time, increasing costs as well as causing
damage. There is a significant risk of leaks going undetected, particularly as toilet accommodation is often unoccupied for long periods. A proximity detection shut-off system prevents waste water from minor leaks by shutting off the water supply when toilet accommodation is not occupied. Valves in cisterns supplying urinals and WCs are especially prone to failure, leading to wastage of
water via the overflow.
The Solution - BREEAM WAT 4
Thorne and Derrick's can supply a PIR system which will automatically shut off the water supply to a WC/washroom when they are unoccupied. The system has been specifically designed to comply with BREEAM WAT4 criteria. Our PIR devices can be used to switch up to three devices and can therefore also be used to control the washroom lighting.
The PIR module is used to control a solenoid valve fitted to the CWS & HWS water supply pipework on entry to the washroom. The solenoid valves will remain closed while the washroom is unoccupied and will open when the PIR module detects movement. The valve will remain open for a set time period, at the end of which the valve will close. T&D can supply a full range or PIR detector modules and solenoid valves to suit your requirements.
Our estimators are fully conversant with the requirements of Breeam WAT 4 and can provide help and advice to consultants, contractors, and end clients.
The Bre-Group strives for continual innovation and as a result, set criteria to achieve credit points may change. Please contact a member of Thorne and Derrick or visit www.breeam.org for the latest information.
BREEAM WATER LEAK DETECTION WAT 2 SYSTEM
Aim
To ensure water consumption can be monitored and managed and therefore encourage reductions in water consumption.
The following demonstrates compliance:
1. The specification of a water meter on the mains water supply to each building; this includes instances where water is supplied via a borehole or other private source.
2. The water meter has a pulsed output to enable connection to a Building Management System (BMS) for the monitoring of water consumption.
Exemplary level criteria
The following outlines the exemplary level criteria to achieve an innovation credit for this BREEAM
issue:
1. Where sub meters are fitted to allow the metering of individual water-consuming plant or building areas, where demand in such areas will be equal to or greater than of 10% of the total
water demand of the building (see also compliance note).
2. Each sub meter has a pulsed output to enable connection to a Building Management System
(BMS) for the monitoring of water consumption.
The requirement for a pulsed output has been included to encourage the use of meters capable of transmitting (by wire or wirelessly) a continuous or pulsed signal with water management information such as total water consumed or flow rate to a Building Management System. This allows demand patterns on water systems to be monitored and evaluated over time. A significant increase in demand
may indicate the presence of a leak or inappropriate or unexpected water consumption.
Aboveis an extract from the Breglobal website. Please visit www.breglobal.co.uk for further information.
The Solution - BREEAM WAT 2
Thorne and Derrick have recently developed and are able to offer a new water leak detection system designed specifically to meet the above BREEAM WAT 2 criteria. The system will monitor the flow rates of water within a building or specific plant and can be used to raise an audible alarm if the flow rate deviates from pre-set parameters. The system can be linked to a BMS and can also be used to shut off the water supply if required.
The system can be supplied with a single or two zone two control unit which is linked to the turbine sensors used to monitor flow rates. The turbines provide a 'pulse' as water flows through them. Should the adjustable pre-set quantity of pulses/litres be exceeded, the control system will provide local audio-visual alarms, and the output relay/s can provide a signal to remote alarm or BMS. If required, the system can also shut off the water supply via the optional latching solenoid valve/s. The control unit can be programmed to suit varying occupancy levels/water usage throughout a 24hour/7day period.
Our system exceeds requirements of BREEAM WAT 2 criteria and will help enable the awarding of BREEAM credit point(s) for water leak detection.
Systems are available to suit a variety of pipe sizes from 15mm - 200mm.
Please contact one of our estimators (who are fully conversant with Breeam WAT 2 criteria), for a quotation or further information and advice on which system you require.
The Bre-Group strive for continual innovation and as a result, set criteria to achieve credit points may change. Please contact a member of Thorne and Derrick or visit www.breeam.org for the latest information.
BREEAM WATER LEAK DETECTION WAT 3 SYSTEM
To reduce the impact of major water leaks that may otherwise go undetected.
Below is an extract from the Breglobal website. Please visit www.breglobal.co.uk for further information.
Assessment Criteria
The following demonstrates compliance:
1. A leak detection system capable of detecting major leaks on the water supply has been installed. The system must cover all mains water supply between and within the building and the site boundary.
2. The leak detection system is:
a. Audible when activated
b. Activated when the flow of water passes through the water meter/data logger at a flow rate
above a pre-set maximum for a pre-set period of time
c. Able to identify different flow and therefore leakage rates, e.g. continuous, high and/or low
level, over set time periods
d. Programmable to suit the owner/occupiers’ water consumption criteria
e. Where applicable, designed to avoid false alarms caused by normal operation of large
water-consuming plant such as chillers.
The Solution - BREEAM WAT 3
Thorne and Derrick have recently developed and are able to offer a new water leak detection system designed specifically to meet the above BREEAM WAT 3 criteria. The system will monitor the flow rates of water entering a building from a site boundary and raise an audible alarm if the flow rate deviates from pre-set parameters. The system can be linked to a BMS and can also be used to shut off the water supply if required.
The system comprises of a two-zone WG2 Control Unit which is linked to two turbine sensors. The first water turbine should be fitted just after the utilities water meter and will monitor the flow rate of mains water pipe feeding the building. The second turbine should be fitted just after the stop-cock inside the building, and will monitor for leaks within the building. The turbines provide a 'pulse' as water flows through them. Should the adjustable pre-set quantity of pulses/litres be exceeded, the WG system will provide local audio-visual alarms, and the output relay/s can provide a signal to remote alarm or BMS. If required, the system can also shut off the water supply via the optional latching solenoid valve/s. The control unit can be programmed to suit varying occupancy levels throughout a 24hour/7day period.
Our system exceeds requirements of BREEAM WAT 3 criteria and will help enable the awarding of BREEAM credit point(s) for major water leak detection.
Systems are available to suit a variety of pipe sizes from 15mm - 200mm.
Please contact one of our estimators (who are fully conversant with Breeam WAT 3 criteria), for a quotation or further information and advice on which system you require. The Bre-Group strive for continual innovation and as a result, set criteria to achieve credit points may change. Please contact a member of Thorne and Derrick or visit www.breeam.org for the latest information.
WHAT IS BREEAM
BREEAM (BRE Environmental Assessment Method) is the leading and most widely used environmental assessment method for buildings. It sets the standard for best practice in sustainable design and has become the de facto measure used to describe a building's environmental performance. BREEAM provides clients, developers, designers and others with
• market recognition for low environmental impact buildings
• assurance that best environmental practice is incorporated into a building
• inspiration to find innovative solutions that minimise the environmental impact
• a benchmark that is higher than regulation
• a tool to help reduce running costs, improve working and living environments
• a standard that demonstrates progress towards corporate and organisational environmental objectives
BREEAM addresses wide-ranging environmental and sustainability issues and enables developers and designers to prove the environmental credentials of their buildings to planners and clients. It:
• uses a straightforward scoring system that is transparent, easy to understand and supported by evidence-based research
• has a positive influence on the design, construction and management of buildings
• sets and maintains a robust technical standard with rigorous quality assurance and certification
Please visit www.breeam.org or click here for more information.
