NOTE: When the water supply for the AFFF system is
non-potable water delete this paragraph.
**************************************************************************
Disinfect new water piping from the system control valve to the point of
connection at the water main and existing water piping affected by the
Contractor's operation in accordance with AWWA C651. Fill piping systems
with solution containing minimum of 50 mg/kg parts per million (ppm) of
free available chlorine and allow solution to stand for minimum of 24
hours. Flush solution from systems with clean water until maximum residual
chlorine content is not greater than 0.2 mg/kg ppm.
3.5
FIELD PAINTING
**************************************************************************
NOTE: For facilities located in a marine
environment specify SSPC SP 11 cleaning and specify
a second topcoat.
**************************************************************************
Clean, prime, and paint new foam systems including valves, piping, conduit,
hangers, miscellaneous metal work, and accessories. Apply coatings to
clean dry surfaces using clean brushes. Clean the surfaces in accordance
with [SSPC SP 3] [SSPC SP 11]. Immediately after cleaning, prime the metal
surfaces with one coat of FS TT-P-664 or SSPC Paint 25primer applied to a
minimum dry film thickness of 0.04 mm 1.5 mils. Exercise care to avoid the
painting of sprinkler heads and operating devices. Upon completion of
painting, remove materials which were used to protect sprinkler heads and
operating devices while painting is in process. Remove sprinkler heads and
operating devices which have been inadvertently painted and provide new
clean sprinkler heads and operating devices of the proper type. Finish
primed surfaces as follows:
3.5.1
Foam Systems in Unfinished Areas
**************************************************************************
NOTE: For facilities located in a marine
environment specify SSPC SP 11 cleaning and specify
a second topcoat.
**************************************************************************
Unfinished areas are defined as attic spaces, spaces above suspended
ceilings, crawl spaces, foam rooms, pump rooms, pipe chases, and other
spaces where ceilings are not painted or not constructed of a prefinished
material. Paint primed surfaces with [one] [two] coat[s] of FS TT-E-489
red enamel applied to a minimum dry film thickness of 0.04 mm 1.5 mils.
3.5.2
Foam Systems in All Other Areas
**************************************************************************
NOTE: For facilities located in a marine
environment specify SSPC SP 11 cleaning and specify
a second topcoat.
**************************************************************************
Paint primed surfaces with two coats of paint to match adjacent surfaces,
except paint valves and operating accessories with [one] [two] coat[s] of
FS TT-E-489 red enamel applied to a minimum dry film thickness of 0.04 mm
1.5 mils. Provide piping with 50 mm 2 inch wide red bands spaced at maximum
SECTION 13958N
Page 39
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