2. Sprinkler heads shall be Underwriters' Laboratories listed or
Factory Mutual approved. The PACNAVFACENGCOM Fire Protection Engineer
shall determine the sprinkler head degree rating for pre-action
systems. Heads installed where they might receive mechanical injury
shall be protected with approved guards. Spacing of heads and design
density discharge requirements shall be determined by the
PACNAVFACENGCOM Fire Protection Engineer. Pendant heads, where
required, shall be installed as shown in NFPA Standard No. 13.
Sprinkler heads shall be nominal l/2-inch size and shall be of the open
type for deluge systems and closed type for pre-action systems.
3. Sprinkler cabinet with approved number of sprinkler heads (of
all types and ratings installed) and a sprinkler wrench shall be
provided for the system and installed where directed.
4. Approved devices shall be installed for the automatic
transmission of water flow alarms, connected to any existing station
exterior fire alarm system and connected for the sounding of a local
fire alarm upon tripping of the (deluge) (pre-action) valve and upon
actuation of a heat responsive device on the pre-action system.
5. Supervision. Release systems and heat-responsive devices shall
be automatically supervised. Sprinkler piping for pre-action systems
shall be supervised by maintaining low air pressure. Supervisory alarm
shall be local and where required transmitted to a central location.
6. Heat Responsive Detectors. Devices for operation of deluge
valves normally incorporate fixed temperature and rate-of-rise
detectors. Operation of pre-action valves will require one of the
following types of detectors: rate-of-rise and fixed temperature or
smoke. The type required will be determined by the PACNAVFACENGCOM
Fire Protection Engineer based on the importance of earliest possible
detection of fire. Emergency battery power shall be provided to
operate the system in the event of failure of primary electric power.
Switchover from primary power to battery power shall be automatic.
7. Tests. Upon completion of the installation, the system shall
be hydrostatically tested and alarm devices tested including
supervisory devices by the installing contractor as specified in NFPA
Standard No. 13. In addition, a&l detectors for actuation of the
(deluge) (pre-action) valves shall be fully tested simulating actual
heat and/or smoke conditions by utilizing approved type testing devices
as recommended by the manufacturer. The above tests shall be conducted
in the presence of the Contracting Officer. The contractor shall
submit a signed and dated certificate to the Contracting Officer as
stipulated in NFPA Standard No. 13, Section on Acceptance Tests.
Deluge sprinkler systems shall be tested under full flow water flow
conditions. Final testing shall be witnessed by the PACNAVFACENGCOM
Fire Protection Engineer who will recommend the system for acceptance
or nonacceptance to the Contracting
8. Interruption of Service. There shall be no interruption of
existing sprinkler protection, water:, electric or fire alarm service
without prior written permission of the Contracting Officer.
Permission shall be requested at least 48 hours before planned