ABSTRACT

Coffee Break Training: Automatic Sprinklers: Sprinkler Aboveground Hydrostatic Tests   [open pdf - 219KB]

"Once a sprinkler system has been installed, or has been altered significantly, the work must be pressure tested to find and correct any leaks. This testing is known as 'hydrostatic' testing because the pipe is filled with water and then pressurized. NFPA13, 'Standard for the Installation of Sprinkler Systems', requires that the hydrostatic test occur at a minimum of 200 psi (13.8 bar) and there can be no pressure loss for two hours. If the systems are exposed to more than 150 psi (10.4 bar) working pressure, they must be tested at a pressure of 50 psi (3.5 bar) in excess of system working pressure. For example, if the normal water pressure in a neighborhood is 175 psi (12 bar), the sprinkler system must be hydrostatically tested to at least 225 psi (15.5 bar)."

Report Number:
Coffee Break Training - Fire Protection Series No. FP-2009-15
Publisher:
Date:
2009-04-14
Series:
Copyright:
Public Domain
Retrieved From:
United States Fire Administration: http://www.usfa.fema.gov/
Format:
pdf
Media Type:
application/pdf
URL:
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