(d) Have discharges visible at both tundish and the final point of
discharge, but where this is not possible or practically difficult,
examples of acceptable discharge arrangements are:
• Ideally below a fixed grating and above the water seal in a
trapped gully.
• External surfaces such as car parks, hard standings,
grassed areas, etc.) are acceptable providing that where
children play or otherwise come into contact with discharges,
a wire cage or similar guard is positioned to prevent contact
whilst maintaining visibility.
• Discharge at high level, e.g. into a metal hopper and metal
down pipe with the end of the discharge pipe clearly visible
(tundish visible or not) or onto a roof capable of withstanding
high temperature discharges of water and 3 m from any plastic
guttering system that would collect such discharges (tundish
visible).
• Where a single pipe serves a number of discharges such as
in blocks of flats, the number served should be limited to not
more than six systems so that any installation discharging can
be traced reasonably easily. The single common discharge
pipe should be at least one pipe size larger than the largest
individual discharge pipe to be connected. If unvented hot
water storage systems are installed where discharges from
safety devices may not be apparent (i.e. in dwellings occupied
by blind, or disabled people), consideration should be given to
the installation of an electrically operated device to warn when
discharge takes place.
To Next Page
Loading...
