7-18 September 2004
Argonite
®
Engineered Fire Suppression System
38-KFSARG-000
Table 7-11. Rod Size As Determined by Pipe Size for Fire Protection
Pipe Size Rod Size
in. mm in. mm
1
25
3/8 9.6
1½ to 3 40 to 80 1/2 12.7
4 and 5 100 and 125 5/8 15.8
6 150 3/4 19.0
8 200 7/8 22.2
7-16 CLEANING OF PIPE NETWORK
Each pipe section shall be cleaned internally after preparation and before assembly by
means of swabbing, utilizing a suitable nonflammable cleaner. The pipe network shall be
free of particulate matter and oil residue before installation of nozzles or discharge devices.
7-17 PRESSURE TESTING OF PIPE NETWORK
Never include actuation valves (cylinder or selector) as part of the piping
network pressure test. As outlined in Paragraph 6-5, always disconnect
the cylinder outlet hose from the manifold check valve and cap all check
valves (using cap P/N 38-509865-001) prior to pressure testing of the
piping network. For single cylinder systems, ensure the piping is plugged
and the outlet hose detached before pressure testing.
Pneumatic pressure testing creates a potential risk of injury to personnel in
the area as a result of airborne projectiles if rupture of the piping system
occurs. Prior to the pneumatic pressure test being conducted, the protected
area shall be evacuated and appropriate safeguards shall be provided for
test personnel.
NFPA 2001
The piping shall be pneumatically tested in a closed circuit for a period of 10 minutes
at 40 PSIG (276 kPa) per NFPA 2001. At the end of 10 minutes, the pressure drop
shall not exceed 20 percent of the test pressure. Exception: It shall be permissible
to omit the pressure test if the total piping contains no more than one change in
direction fitting between the storage container and the discharge nozzle, and if all
piping is physically checked for tightness.
ISO 14520-1
Pneumatically tested at 45 PSI (3 bar) for a period of 10 minutes using Air/Argonite
or N
2
. Pressure drop not to exceed 20% of the test pressure at end of test.
Note: A test report/statement of completion must be issued.
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