PROJECT 27
Two natural gas boilers
Restaurant supply A gas supply for the restaurant was taken near the restaurant by the NGP contractor , for onward connection by the restaurant owner .
A pressure gauge will be installed to this supply pipe .
Hydrant and Hose reel installation A 30m hose reel was installed within areas of 500 sq . mt . this complies with SANS 543 and installed according to SANS 10105-1 10400-W . A 65mm fire hydrant is installed within a 1000 sq . mt . range .
The plumber ensured that the relevant piping , fittings , etc , was tested to a 2000Kpa pressure .
Two hose reel & hydrant Vertical Multistage pumps have been placed in Basement level 3 Domestic water plant room . The two pumps are one duty and one as stand by . The pumps draw water from the tank located in the
Basement level 3 , with 80m ³ of water reserved for hose reels and hydrants . In addition , a hose reel & hydrant vertical multistage jockey / booster pump has been placed on the roof . The jockey / booster pump draws water from the two tanks located on the Roof , with a total of 9m ³ reserved for hose reels . In the event a hose reel comes into operation , the jockey / booster pump will activate and draw from the tanks located on the roof . If more than three hose reels or a hydrant comes into operation the main hose reel & hydrant pump in Basement level 3 will activate via a pressure sensor in the pipes system and draw water from the tank in the basement . In the event there is no electrical power for the pumps , there is a bypass located on the roof which will gravity feed the building from the tanks on the roof to provide water to the Hose reel / Hydrant system via gravity . PA
“ Hot water is produced using two Natural Gas Boilers .”
Developers : Management :
Consultants :
Contractors :
Renprop Grapnel
ACS Consulting Engineers , responsible for Design , HVAC , Wet Services , Natural Gas reticulation , Fire sprinkler reticulation and Fire Detection systems .
Plumbing Vic Ball Plumbers HVAC and Pump installation Contractor : Ampair . Gas Boiler supplier : Natural gas piping contractor : Hot Water tank supplier :
Combustion Technologies High Speed Gas SIRAC
April 2022 Volume 28 I Number 2 www . plumbingafrica . co . za