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Provide electric alarm [horn] [bell] to sound locally on operation of any
detection system, regardless of water flow. The current for these alarms
may be taken from the normal building service provided the connection is
made ahead of the other services.
2.7.3
Fire Alarm
Provide equipment for the automatic transmittal of an alarm over the
[facility] [building] fire alarm system and arrange to actuate by detection
system [and by the flow of water in each sprinkler system]. [Provide
supervision of detection and actuation circuits.]
PART 3
EXECUTION
3.1
INSTALLATION
Installation, workmanship, fabrication, assembly, erection, examination,
inspection, and testing shall be in accordance with NFPA 13, except as
modified herein. Install piping straight and true to bear evenly on
hangers and supports. Do not hang piping from plaster ceilings. Keep the
interior and ends of new piping and existing piping affected by
Contractor's operations thoroughly cleaned of water and foreign matter.
Keep piping systems clean during installation by means of plugs or other
approved methods. When work is not in progress, securely close open ends
of piping to prevent entry of water and foreign matter. Inspect piping
before placing into position. Provide Teflon pipe thread paste on male
threads.
3.1.1
Electrical Work
Provide electrical work associated with this section under Section 16402
INTERIOR DISTRIBUTION SYSTEM, except for control [and fire alarm] wiring.
[Provide fire alarm system under Section 13852N INTERIOR FIRE ALARM
SYSTEM.] Provide control [and fire alarm] wiring[, including connections
to fire alarm systems,] under this section in accordance with NFPA 72.
Provide wiring in rigid metal conduit or intermediate metal conduit, except
electrical metallic tubing conduit may be used in dry locations not
enclosed in concrete or where not subject to mechanical damage.
3.1.2
Disinfection
Disinfect the new water piping and existing water piping affected by
Contractor's operations up to the [bottom flange of the [preaction]
[deluge] valve] [backflow prevention device]in accordance with AWWA C651.
Fill piping systems with solution containing minimum of 50 milligram per
kilogram (mg/kg) parts per million (ppm) of available chlorine and allow
solution to stand for minimum of 24 hours. Flush solution from the systems
with domestic water until maximum residual chlorine content is within the
range of 0.2 to 0.5 mg/kg ppm, or the residual chlorine content of domestic
water supply. Obtain at least two consecutive satisfactory bacteriological
samples from new water piping, analyze by a certified laboratory, and
submit results prior to the new water piping being place into service.
Disinfection of systems supplied by nonpotable water is not required.
3.1.3
Connections to Existing Water Supply Systems
Use tapping or drilling machine valve and mechanical joint type sleeves for
SECTION 13945N
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