The main drain valve assembly is normally located at the system riser. Its purpose is twofold. First,it is used as a central point to drain water from the entire system.As such, where practicable, all system piping should be arranged to drain to the main drain valve.Its second purpose is to serve as a tool to measure incoming water flow. This is commonly referred to as the
Ensured that the proper clearance is available from civil side before commencement of works.
Ensured that the work area is clean and safe for carrying out the activities.
Prior to start of works, it shall be
ensured that the relevant shop drawings and coordination drawings are
approved and issued for construction.
It shall be ensured that all electrical
requirements such as cable trays, cable Trunking, entry side lugs,
glands etc. are finalized and coordinated.
It shall be ensured that the material issued is as per the approved material submittal.
INSTALLATION PROCEDURE FOR WATER BOOSTER PUMPS
The following procedure shall be followed for the installation of Water Supply & Water Booster Pumps:
Visually inspect the exterior casing of
the Water Supply Pumps for any damages during transporting and
transferring of the units.
Ensure that the installation of the
Water Supply Pump is carried out in accordance with manufacturer’s
installation recommendations and specification.
Prior to start of installation, refer
to the approved shop drawing related to the area of installation and
ensure that required material is available at site as per approved
material submittals.
Ensure that the equipment and
accessories are stored properly and there is no damage or deformity of
any kind during transportation of material from site store to the
working area.
After inspecting the work area, ensure
that it is totally ready for installation. Then the required equipment
shall be moved to the place of installation.
Check the equipment weight to ensure that the rigging equipment can handle that safely.
Before installing the Water Supply Pump
check whether proper space is available for servicing or not. If there
are any services installed previously in ceiling in the same area shall
be shifted to the side of the Water Supply Pump for easy future
maintenance.
The foundation of the Pumps shall be
checked for dimensions, location, orientation and the level as per
manufacturer’s recommendations.
First the location of the vibration isolators shall be marked on the ground base.
Water Supply Pumps shall be installed
and positioned as shown on the approved shop drawings and level the
pumps by using spirit level.
After leveling the pumps tighten the base bolts of the pumps.
Proper space for valves and piping for future maintenance shall be ensured before installing the pumps.
It shall be ensured that the pumps & motors are properly installed with no pipe strain transmitted to the pump casing.
After completion of installing the pumps the same shall be offered for inspection.
Installation of water supply piping,
valves and insulation of piping shall be done as per approved method
statement and as per approved shop drawings.
While installation cable tray &
trunking, it shall be ensured that the roughting does not hinder the
acess of various parts of the pumps.
Electrical power and control wiring and
earthing shall be carried out as detailed on respective approved
electrical shop drawings and as per the recommendations of manufacturer.
Valves tags and identification sign shall be provided as per requirements.
A fiberglassblanketmaterialused as a lininginside a sheet-metalduct of an air-conditioningsystem;reducesnoisewhich is transmittedalongtheductandprovidesthermalinsulation.
In case of fire in a high rise building, an SPF uses clean outside air
to pressurize the air in stairwells. The pressurized air helps people
escape the fire and firefighters battle the fire.
Stairways are Fire Escape Routes
Nowadays, stairwells have better fire ratings than the rest of
the building. In other words, so people can get out when the rest of the
building is on fire, stairways don't burn.
Stairways Full of Smoke
The stairways may not burn, but they can still fill up with
smoke. The smoke can not only make it harder to see as one is getting
away from a fire, but it can:
Make it harder to breathe - possibly causing injury or death
Close off the escape route - possibly causing people to seek another pathway of escape
Open Doors
The problem is, as people are escaping the fire, they have to
open the door to the stairway. When the door is open, preventing the
stairway from being used by later escapees, smoke follows and billows
into the stairway.
Smoke Push Back
The idea behind the stair pressurization is that
during a fire the stairway should have more pressure than the rest of
the building. That way, when the doors open, the higher pressure in the
stairwell pushes the smoke back onto the floor, keeping the escape route
clear of smoke.
The smoke free escape route also doubles as a smoke free entrance route for the firefighters as they combat the fire
exhaust fan - a fan that moves air out of an enclosure.
Air intake and exhaust vents are used in ventilating steep-slope roof assemblies
to provide a means of allowing outside air to enter and exit attics and ventilation
spaces.
Intake Vents: Air intake vents are used to allow outside air to enter into attics
and ventilation spaces. Intake vents should be located along a roof assembly's lowest
eave at or near soffits or eaves.
One type of valve commonly used to control water flow to fire sprinkler systems is known as an OS&Y gate valve. OS&Y means “outside stem and yoke” or "outside screw and yoke". OS&Y gate valves operate by opening and closing via a gate, which lowers into or rises out of the valve.
