Standpipe DUCOT

Question 1

Description

Answer 1

Standpipe

Question 2

Use

Answer 2

• permits a controlled supply to be taken from reticulated water mains
• connect hose to ground hydrant
• case 2

Question 3

Construction

Answer 3

Five components
- base
- barrel
- top boss
- water head
- spindle

• approximately 1m high and made of non-corrosive materials such as brass or aluminum

Base
- rotating collar to fit under hydrant lugs
- fixed collar working as stop for rotating collar and seat for washer
- washer ensures water-tight seal
- disc to engage/depress the ball valve in the hydrant.

Barrel
- directs water from hydrant to water head

Top boss
- tightening handles for shipping and in shipping the standpipe.

Water head
- two stranded 64mm male couplings with black cap fitted to one side
- water tight gland assembly at base to allow for head to be rotated.

Spindle
- T-handle at top and concave disc at the bottom.
- T-handle controls water discharge from the outlet

Question 4

Operation

Answer 4

Incorporates FF Skill 4 (ship standpipe) and FF Skill 5 (unship standpipe)

• locate hydrant (call hydrant)
• use hydrant bar to loosen and open hydrant lid
• check hydrant pit is clear (call pit clear)
• check the disc, collar and washer and then ship standpipe.
• rotate tightening handles clockwise to tighten standpipe to hydrant
• turn T-handle clockwise to flush hydrant until water runs clear, then turn off by turning anti-clockwise and connect hoseline.
• call ‘water on!’
• turn T-handle clockwise to discharge water from the outlet.
• at conclusion of operations, call ‘water off’ and then turn T-handle anti-clockwise to stop the supply of water from the outlet.
• release pressure in hoseline by opening the inlet at the pump.
• disconnect hose from standpipe.
• unship standpipe by turning tightening handles anti-clockwise.
• check the disc, collar and washer after removing from the hydrant pit.

Safety
- never put your head over the spindle when shipping/unshipping the standpipe or turning the T-handle.
- wear appropriate PPE and ensure your visor is down when shipping the standpipe.
- look for hazards in hydrant pits when shipping standpipes (needles, spiders/ants).
- ensure hoseline is connected at both ends before changing the hoseline.

Question 5

Testing

Answer 5

Visual (monthly)
- coupling threads
- washers
- disc
- collar moves freely
Blank capp attached