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C120-H007-05EN 103
8.2 Details
(3) Water leaking from supply/drainage pipes
If a new building is to be built, avoid the construction of supply/drainage pipes around
the computer room and the data storage room or limit such construction to a
minimum. If piping cannot be rerouted in an existing building, install a stop valve at a
point just before the pipes enter the room. Avoid installing facilities that use water on
the floor right above.
(4) Water leaking from air conditioners
In rooms in which air conditioners are installed, build a dike to stop the outflow of
any water which leaks from air conditioners, and provide facilities to drain any water
that accumulates. (See Figure 4.10.)
The installation of a water leak detector is recommended to speed up the detection of
accidents. When using underfloor ventilation, ensure that the dike does not interfere
with the ventilation of conditioned air.
(5) Overturning of cleaning buckets
Do not allow water buckets to be brought into computer rooms. Make sure that mops
are cleaned outside the room and squeezed tight to remove water before they are
brought into the room.
(6) Water used to extinguish fires
If fire fighting has been conducted anywhere in the building, water used to extinguish
the fire could flow into rooms through stairways and passages. Build a dike at the
computer room entrance to stop such inflow.
(7) Other considerations for water damage prevention
Other major considerations for water damage prevention are:
z Flooding caused by tidal waves, exceptionally high tides, and other floods
z Water drainage facilities
z Water slopes and drain channels on the floor surfaces
z Air conditioning tank liquid level alarms