The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

Section 23 03 00.00 20 23 03 00.00 20 23 03 00.00 20 BASIC MECHANICAL MATERIALS AND METHODS, applies to this section, with the additions and modifications specified herein.

Design and [provide a new] [and] [modify an existing] automatic aqueous film forming foam (AFFF) [deluge] [pre-action] sprinkler system(s) [and under-wing supplemental protection system] for [_____]. System shall provide uniform distribution of AFFF solution to provide complete coverage throughout the [building] [areas indicated]. The design, equipment, materials, installation, and workmanship shall be in strict accordance with the required and advisory provisions of NFPA 11, NFPA 13, [NFPA 14,] [NFPA 15,] NFPA 16, [NFPA 24,] [NFPA 30,] NFPA 70, NFPA 72 , and NFPA 409, except as modified herein. Each system [shall be designed for earthquakes and] shall include all materials, accessories and equipment necessary to provide each system complete and ready for use. Design and install each system to give full consideration to blind spaces, piping, electrical equipment, ductwork, and all other construction and equipment to provide complete coverage in accordance with the drawings to be submitted for approval. Devices and equipment for fire protection service shall be of a make and type listed by the Underwriter's Laboratories Inc. in the UL Fire Prot Dir, or approved by the Factory Mutual System and listed in FM P7825. In the publications referred to herein, the advisory provisions shall be considered to be mandatory, as though the word "shall" had been substituted for "should" wherever it appears; reference to the "authority having jurisdiction" shall be interpreted to mean the [[_____] Division, Naval Facilities Engineering Command Fire Protection Engineer] [Corps of Engineers Contracting Officer]. Begin work at the point indicated.

Prepare shop drawings for fire extinguishing system in accordance with the requirements for "Plans" as specified in NFPA 11 and "Working Plans" as specified in NFPA 13. Each drawing shall be A1 841 x 594 mm 34 by 22 inches . Do not commence work until the design of each system and the various components have been approved. Show:

Submit design calculations for the system.

Submit AFFF containment and disposal plan as required under paragraph entitled "Environmental Protection."

Upon completion, and before final acceptance of the work, submit a complete set of as-built drawings for the fire extinguishing system [, including complete as-built circuit diagrams,]. Submit A1 841 x 594 mm 34 by 22 inch reproducible as-built drawings on mylar film with 200 by 100 mm 8 by 4 inch title block similar to contract drawings. Submit as-built drawings in addition to the record drawings required by Division 1.

Flow of water and AFFF shall be controlled by [deluge] [pre-action] valves. Foam proportioning equipment shall activate automatically upon tripping of the [deluge] [pre-action] valve(s) for the corresponding foam system(s). [Deluge] [Pre-action] valves shall be tripped by independent detection systems. No valve will be operated by the building fire evacuation alarm system. Use of motor-operated valves is prohibited. Once activated, system(s) shall operate until shut down manually. Provide separate circuits from the control panel to each zone of initiating devices. Transmission of signals from more than one zone over a common circuit is prohibited.

Overhead systems shall be controlled by [deluge] [pre-action] valves operated by automatic detection systems and by remote manual release stations.

Monitor nozzles shall be controlled by deluge valves operated by [the automatic detection systems and manual release stations which activate the corresponding overhead system(s)] [independent ultraviolet-infrared (UV-IR) optical detection systems and manual stations] [flow of AFFF solution in the overhead system].

Hose reels shall be controlled by deluge valves operated by remote manual release stations, separate from those used for overhead systems and monitor nozzles.

Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] The following shall be submitted in accordance with Section 01 33 00 01 33 00 01 33 00 SUBMITTAL PROCEDURES:

The fire protection engineer, [_____] Division, Naval Facilities Engineering Command will review any approve all submittals in this section requiring Government approval.

The [_____] Division, Naval Facilities Engineering Command, Fire Protection Engineer delegates the authority to the Quality Control (QC) Representative's U.S. Registered Fire Protection Engineer for review and approval of submittals required by this section. Submit to the [_____] Division, Naval Facilities Engineering Command, Fire Protection Engineer one set of all approved submittals and drawings immediately after approval but no more later than 15 working days prior to final inspection.

Prior to commencing work, submit data showing that the Contractor has successfully installed automatic foam fire extinguishing sprinkler systems of the same type and design as specified herein, or that he has a firm contractual agreement with a subcontractor having the required experience. Include the names and locations of at least two installations where the Contractor, or the subcontractor referred to above, has installed such systems. Indicate the type and design of each system, and certify that the system has performed satisfactorily for a period of at least 18 months.

[Qualifications of System Technician: Installation drawings, shop drawing and as-built drawings shall be prepared, by or under the supervision of, an individual who is experienced with the types of works specified herein, and is currently certified by the National Institute for Certification in Engineering Technologies (NICET) as an engineering technician with minimum Level-III certification in Special Hazard System program. Contractor shall submit data for approval showing the name and certification of all involved individuals with such qualifications at or prior to submittal of drawings.]

Furnish the following spare parts:

For each product, component and system specified in this section as a "computer controlled facility component" provide a statement of Y2K compliance warranty for the specific equipment. The contractor warrants that each hardware, software, and firmware product delivered under this contract and listed below shall be able to accurately process date and time data (including, but not limited to, calculating, comparing, and sequencing) from, into, and between the twentieth and twenty-first centuries, and the years 1999 and 2000 and leap year calculations to the extent that other computer controlled components, used in combination with the computer controlled component being acquired, properly exchange data and time data with it. If the contract requires that specific listed products must perform as a system in accordance with the foregoing warranty, then that warranty shall apply to those listed products as a system. The duration of this warranty and the remedies available to the Government for breach of this warranty shall be defined in, and subject to, the terms and limitations of the contractor's standard commercial warranty or warranties contained in this contract, provided that, notwithstanding any provisions to the contrary, in such commercial warranty or warranties, the remedies available to the Government under this warranty shall include repair or replacement of any listed product whose non-compliance is discovered and made known to the contractor in writing within one year (365 days) after acceptance. Nothing in this warranty shall be construed to limit any rights or remedies the Government may otherwise have under this contract, with respect to defects other that Year 2000 performance.

Provide computer controlled facility components, specified in this section, that are Year 2000 compliant (Y2K). Computer controlled facility components refers to software driven technology and embedded microchip technology. This includes, but in not limited to, telecommunications switches, utility monitoring and control systems, fire detection and suppression systems, alarms, security systems, and other facilities control systems utilizing microcomputer, minicomputer, or programmable logic controllers.

Design of [deluge] [pre-action] fire extinguishing foam systems shall be by hydraulic calculations for uniform distribution of AFFF solution over the protected area and shall conform to the NFPA standards listed above and to the requirements as specified herein.

Heads shall have 15 [or 13.50] mm 1/2 [or 17/32] inch orifice. No o-rings will be permitted in sprinkler heads. [For deluge systems, provide open heads.] [For pre-action systems, the release element of each head shall be of the ["intermediate"] ["high"] temperature rating or higher as suitable for the individual location installed.] Provide chromium plated ceiling plates and pendent sprinklers below suspended ceilings. Provide corrosion resistant sprinkler heads and sprinkler head guards as required by NFPA 13.

Provide extra sprinkler heads and sprinkler head wrench in a metal cabinet adjacent to the pre-action valve within each building. The number and types of extra sprinkler heads shall be as specified in NFPA 13.

Valves shall be operated by a detection system listed for releasing service and independent of the building fire alarm system. [[Deluge] [Pre-action] valve clappers shall incorporate a latching mechanism that will not be affected by changes of pressure in the water system.] If 150 mm 6 inch valves are used in 200 mm 8 inch risers, provide smoothly tapered connections. In addition to automatic operation, arrange each valve for manual release at the valve. Provide pressure gages and other appurtenances at the [deluge] [pre-action] valves as required by NFPA 13. Provide a detection device at the end of each actuation circuit to test the circuit and mount the device [adjacent to the valve] between 1.80 and 2.40 meters 6 and 8 feet above the finish floor. Label each testing device to indicate the valve it activates. [Provide remote manual releases [at [_____]] [where shown].]

[Distribution shall be essentially uniform throughout the area in which it is assumed the sprinkler heads will open. Variation in discharge from individual heads in the hydraulically most remote area shall be between 100 and 115 percent of the specified density.]

[Distribution shall be essentially uniform throughout the area. Variation in discharge from individual heads shall be between 100 and 115 percent of the specified density.]

Size system to provide the specified density when the system is discharging the specified total maximum required flow. Application to horizontal surfaces below the ceiling sprinklers shall be 110 mL/sec per sq meter 0.16 gallons per minute (gpm) per square foot with simultaneous operation of [_____] operating foam monitor nozzles, [and] [_____] operating foam hose lines[, and with outside water hose stream requirements of [_____] mL/sec gpm ].

[Area shall be the hydraulically most remote [_____] square meter foot area as defined by NFPA 13.]

[Area shall be [that protected by each riser] [based on the [15.25] [22.75] [30.50] meter [50] [75] [100] foot radius rule as determined in accordance with NFPA 409 for Type I aircraft hangars].]

Calculate losses in pipe in accordance with the Hazen-Williams Formula with 'C' value of 100 for steel pipe [except 120 for steel pipe used in deluge systems], 150 for copper tube, and 140 for cement lined ductile iron pipe.

Location of heads in relation to the ceiling and spacing of sprinkler heads shall conform to NFPA 13 for extra hazard occupancy. The spacing of sprinklers on the branch lines shall be essentially uniform.

[Base hydraulic calculations on a static pressure of [_____] kPa (gage) with [_____] L/m pounds per square inch gage (psig) with [_____] gpm being available at a residual pressure of [_____] kPa (gage) psig at the point [indicated] [of connection with the base water distribution system].]

[Base hydraulic calculations on [_____] fire pump(s) running. Provide fire pumps as specified in Section 21 30 00 21 30 00 21 30 00 FIRE PUMPS.]

[Base hydraulic calculations on [_____] fire pump(s) running, with a suction supply having a static pressure of [_____] kPa (gage) psig with [_____] L/m gpm being available at a residual pressure of [_____] kPa (gage) psig at the point [indicated] [of connection with the base water distribution system]. Provide fire pumps as specified in Section 21 30 00 21 30 00 21 30 00 FIRE PUMPS].

System shall apply foam solution over the sprinkler discharge area for a minimum of [10] [_____] minutes while simultaneously discharging foam solution through monitors for a minimum of [10] [_____] minutes. Hose station discharge time shall be a minimum of [20] [_____] minutes. Reduction of the discharge duration based on a discharge rate higher than the specified minimum is not permitted.

Provide electric [heat detectors,] [and] [smoke detectors,] [and] [combination ultraviolet-infrared detectors]. All wiring shall be supervised and installed in protective metal conduit or tubing.

Modular type panel installed in a [flush] [surface] mounted steel cabinet with hinged door and cylinder lock. Switches and other controls shall not be accessible without the use of a key. The control panel shall be a neat, compact, factory-wired assembly containing all parts and equipment required to provide specified operating and supervisory functions of the system. Panel cabinet shall be finished on the inside and outside with factory-applied enamel finish. Provide main annunciator located on the exterior of the cabinet door or visible through the cabinet door. Provide audible trouble signal. Provide prominent engraved rigid plastic or metal identification plates, or silk-screened labels attached to the rear face of the panel viewing window, for all lamps and switches. System power shall be 120 volts AC service, transformed through a two winding isolation transformer and rectified to 24 volts DC for operation of all system initiating, actuating, signal sounding, trouble signal and fire alarm tripping circuits. System shall be electrically supervised on all circuits. [A ground fault condition or a single break in any circuit which prevents the required operation of the system shall result in the operation of the system trouble signal.] [A single open or ground fault condition in any detection (initiating) [or signaling] circuit shall not result in any loss of system function, but shall cause the actuation of system trouble signals. A ground fault condition or single break in any other circuit shall result in the activation of the system trouble signals.] Loss of AC power, a break in the standby battery power circuits, or abnormal AC power or low battery voltage shall result in the operation of the system trouble signals. The abnormal position of any system switch in the control panel shall result in the operation of the system trouble signals. Trouble signals shall operate continuously until the system has been restored to normal at the control panel. System trouble shall also be annunciated on the appropriate zone of the building fire alarm panel. [Provide a 100 mm 4 inch remote system trouble bell [or buzzer], installed [in a constantly attended area] [where shown], arranged to operate in conjunction with the integral trouble signals of the panel. Provide remote bell [or buzzer] with a rigid plastic or metal identification sign which reads "Foam System Trouble." Lettering on identification sign shall be a minimum of 25 mm one inch high.] Control panel, batteries, and battery charger shall be weatherproof type or located in an area not subject to water damage. System control panel shall be UL listed or FM approved for extinguishing system control (releasing device service). Permanently label all switches. Provide panel with the following switches:

Provide integral with the main control panel. Provide separate alarm and trouble lamps for each zone alarm initiating circuit as indicated below, located on the exterior of the cabinet door or visible through the cabinet door. Lamps shall be LED (Light Emitting Diode) type. Supervision will not be required provided a fault in the annunciator circuits results only in loss of annunciation and will not affect the normal functional operation of the remainder of the system. Each lamp shall provide specific identification of the [zone] [area] [device] by means of a permanent label. In no case shall zone identification consist of the words "Zone 1," "Zone 2," etc., but shall consist of the description of the [zone] [area] [device].

Shall be arranged as follows:

Locate as shown. Panel shall duplicate all requirements specified for the main control panel annunciator, except that in lieu of individual zone trouble lamps a single common system trouble lamp may be provided. Lamps shall be LED (Light Emitting Diode) type, except lamps used in backlit panels shall be LED or neon type. Panel shall have a lamp test switch. Zone identification shall be by means of [permanently attached rigid plastic or metal plate(s)] [silk-screened labels attached to the reverse face of backlighted viewing window(s)]. Panel shall be of the [interior] [weatherproof] type, [flush] [surface] [pedestal]-mounted.

Provide [sealed lead calcium,] [or] [sealed lead acid,] [or] [vented wet cell nickel cadmium,] batteries and charger. Drycell batteries are not acceptable. House batteries in the control panel or in a well constructed vented steel cabinet with cylinder lock, non-corrosive base, and louvered vents. Provide batteries of adequate ampere-hour rating to operate the system under supervisory conditions for 60 hours, at the end of which time batteries shall be capable of operating the entire system in a full alarm condition for not less than [30] [15] minutes. Provide calculations substantiating the battery capacity. Provide reliable separation between cells to prevent contact between terminals of adjacent cells and between battery terminals and other metal parts. Provide batteries with post-and-nut, "L"-blade, or similar terminals. Slip-on tab type terminals are not acceptable. When a separate battery cabinet is used, provide a fuse block for battery leads within the cabinets. Finish the cabinet on the inside and outside with enamel paint. Locate the top of the battery cabinet not more than 1.20 meters 4 feet above floor level.

Provide completely automatic high/low charging rate type charger capable of recovery of the batteries from full discharge to full charge in 24 hours or less. Provide an ammeter for recording rate of charge and a voltmeter to indicate the state of battery charge under load. Meters shall be factory installed, or factory-supplied plug-in modules. Field installation of meters other than the panel manufacturer's plug-in modules is prohibited. Provide a trouble light to indicate when batteries are manually placed on a high rate of charge as part of the unit assembly if a high-rate switch is provided. House charger in the control panel or battery cabinet.

Provide pneumatic single acting rate-of-rise heat detectors. All tubing shall be supervised and installed in protective metal conduit or tubing.

Shall be automatic, electric motor driven and include piping, pressure switch, regulator, and tank if required. Provide compressor with a minimum capacity capable of charging the pneumatic detection system to normal system pressure in 15 minutes and shall include all controls necessary to maintain the system fully charged. [Provide at least one compressor for every [_____] detection circuits.]

Provide copper piping. Provide a control panel or equivalent device(s) to automatically maintain the required pneumatic pressure in the detection system, and limit the quantity of air that enters the detection/release system. Provide supply air and system air pressure gages.

[Pre-action sprinkler piping] [and] [pneumatic detection system] shall be supervised. A break in the piping or tubing systems resulting in loss of pneumatic pressure shall result in the activation of a trouble signal. Provide a silencing switch which transfers trouble signals to an indicating lamp and arrange so that correction of the trouble condition will automatically transfer the trouble signal from the indicating lamp back to the trouble signal until the switch is restored to normal position.

Provide [combined] overhead system, and monitor nozzle release stations where shown, and separate hose station release stations at each hose station. Stations shall be of a type not subject to operation by jarring or vibration. Stations shall have a dual action release configuration to prevent accidental system discharge. Break-glass-front stations are not permitted; however a pull lever break-glass-rod type is acceptable. Station color shall be red. Station shall provide positive visible indication of operation. Restoration shall require use of a key or special tool. Place warning signs at each station indicating that operation of the station will cause immediate AFFF discharge. Where a building fire alarm pull station is also mounted in the vicinity of a foam release station, separate the stations by at least one meter 3 feet horizontally. Provided permanent engraved rigid plastic or metal labels to clearly distinguish foam release stations from building fire alarm stations, and to indicate the function of each foam release station. Stations shall be weatherproof type.

Designed for detection of fire by [combination fixed temperature rate-of-rise] [rate compensating] principle. Locate detectors in accordance with their listing by UL or FM and the requirements of NFPA 72, except provide at least two detectors in all rooms of 56 sq meters 600 square feet or larger in area. Temperature rating of detectors shall be in accordance with NFPA 72. Reduce heat detector spacing in areas with ceiling heights exceeding 3 meters 10 feet, in accordance with NFPA 72. No detector shall be located closer than 305 mm 12 inches to any part of any lighting fixture nor closer than 610 mm 24 inches to any part of an air supply diffuser. Detectors, located in hazardous locations as defined by NFPA 70, shall be types approved for such locations. Provide with terminal screw type connections. Removal of detector head from its base shall cause activation of system trouble signal. Detectors shall be weatherproof type.

Designed for [surface] [semi-flush] outlet box mounting and supported independently of conduit, tubing or wiring connections. Contacts shall be

self-resetting after response to rate-of-rise actuation. Operation under fixed temperature actuation shall result in an external indication. Detector units located in areas subject to abnormal temperature changes shall operate on fixed temperature principle only.

Designed for [surface] [flush] [vertical unit] outlet box mounting and supported independently of conduit, tubing or wiring connections. Detectors shall be hermetically sealed and automatically resetting type which will operate when ambient air temperature reaches detector setting regardless of rate of temperature rise. Detector operation shall not be subject to thermal time lag.

Designed for detection of abnormal smoke densities by the [ionization] [or] [photoelectric] principle. Provide necessary control and power modules required for operation integral with the main control panel. Provide detectors and associated modules which are compatible with the main control panel and suitable for use in a supervised circuit. Detector circuits shall be of the 4 wire type whereby the detector operating power is transmitted over conductors separate from the initiating circuit. Provide a separate, fused, power circuit for each smoke detection initiating circuit (zone). Failure of the power circuit shall be indicated as a trouble condition on the corresponding initiating circuit. [As an alternate, detector circuits of the 2-wire type whereby the detector operating power is transmitted over the initiating circuit are permitted, provided the detectors used are approved by the control panel manufacturer for use with the control panel provided and are UL listed or FM approved as being compatible with the control panel (copies of the UL or FM listings showing compatibility shall be submitted). When 2-wire smoke detectorsare used, the total number of detectors on any detection circuit shall not exceed 80 percent of the maximum number of detectors allowed by the control panel manufacturer for that circuit and the standby current draw of the entire system shall not exceed 80 percent of the rated output of the system power supply module(s). Provide additional zones above those specified in the paragraph entitled "Initiating Zones" if required to meet the above requirements. Calculations showing compliance with the power consumption limitation requirements specified above shall be submitted with the calculations required by the paragraph entitled "Design Data." The data submitted under the paragraph entitled "Test Reports" shall clearly indicate the compatibility of the detectors with the control panel provided and the maximum number of detectors permitted per zone.] Malfunction of the electrical circuits to the detector or its control or power units shall result in the operation of the system trouble signals. Equip each detector with a visible indicator lamp that flashes when the detector is in the normal standby mode and glows continuously when the detector is activated. [Provide remote indicator lamps for each detector that is concealed from view.] Provide plug-in type detectors with tab-lock or twist-lock, quick disconnect head and separate base in which the detector base contains screw terminals for making all wiring connections. Detector head shall be removable from its base without disconnecting any wires. Removal of detector head from its base shall cause activation of system trouble signals. Provide each detector with an integral screen to prevent entrance of insects into the detection chamber(s).

Multiple chamber type which is responsive to both visible and invisible particles of combustion. Detectors shall not be susceptible to operation by changes in relative humidity.

Operate on a multiple cell concept using an infra-red light-emitting diode (LED) light source.

NFPA 72, the manufacturer's recommendations and the requirements stated herein, however, in no case shall spacing exceed 9 by 9 meters 30 by 30 feet per detector, and 9 lineal meter 30 lineal feet per detector along corridors. Detectors shall not be placed closer than [1] [1.50] meter [3] [5] feet from any air discharge or return grille, nor closer than 305 mm 12 inches to any part of any lighting fixture.

Flame detectors shall operate on the dual spectrum ultraviolet-infrared (UV-IR) principle. Detector shall employ a solar-blind UV sensor with a high signal-to-noise ratio, and a narrow band IR sensor. Detector logic shall require UV and IR signals to be present, in the proper ratio or signature as emitted by a hydrocarbon fire, before the detector initiates an alarm. [Detectors shall respond within 5 seconds to a JP-4 fire 3 meters 10 feet square, 46 meters 150 feet from the detector.] Detector shall not be activated by non-fire sources such as continuous or intermittent direct or reflected solar radiation, arc-welding, lightning, radiant heat, x-rays, artificial lighting, radio transmissions, and normal jet engine functions. Detector shall have an automatic through-the-lens self-testing feature. Malfunction of the detector circuitry, or degradation of the sensors' lens cleanliness to the point where the detector will not detect the design fire signature, shall cause operation of the system trouble signals. Logic circuits necessary for operation of the detector shall be integral to the detector or located in separate flame detector control panel(s) located adjacent to the foam system control panel(s). Each detector in alarm shall be individually annunciated by an LED on the detector or at the detector control panel. Primary and auxiliary power supply shall be taken from the foam system control panel(s). Detectors, and associated control panels if required, shall be compatible with the foam system control panel(s). Detectors and associated control panels shall be weatherproof, or housed in weatherproof enclosure(s) when in an area subject to system discharge and shall also be explosion-proof when located in hazardous areas as defined by NFPA 70. Detector spacing and location shall be in accordance with NFPA 72, their UL listing or FM approval, and the manufacturer's recommendations. The detector manufacturer shall determine or approve the detector layout. Detector layout drawings shall include horizontal and vertical angles for correct aiming. Locate detectors so that every portion of the protected [floor] area is within the field of view of at least [two] [three] detectors, taking into account fixed obstructions. Provide detectors with manufacturer's swivel mounting bracket. Provide a permanent engraved rigid plastic or metal label at each detector location with detector aiming information (degrees horizontal and vertical) for the corresponding detector.

Electrical work is specified in Section 26 20 00 26 20 00 26 20 00 INTERIOR DISTRIBUTION SYSTEM, except for control [and fire alarm] wiring. [Fire alarm system is specified in Section [ 28 31 74.00 20 28 31 74.00 20 28 31 74.00 20 INTERIOR FIRE ALARM SYSTEM] ["Fire Alarm and Fire Detecting Systems (Local)"]].

Provide control wiring and connections to fire alarm systems, under this section and conforming to NFPA 70 and NFPA 72. Wire for 120 volt circuits shall be No. 12 AWG minimum solid conductor. Wire for low voltage DC circuits shall be No. [14] [16] AWG minimum solid conductor [, except wire to remote annunciators, if provided, may be 18 AWG minimum solid conductor]. All wiring shall be color coded. Wiring, conduit and devices exposed to water or foam discharge shall be weatherproof. Wiring, conduit and devices located in hazardous atmospheres, as defined by NFPA 70[and as shown], shall be explosion proof. All conduit shall be minimum 20 mm 3/4 inch size.

Power shall be 120 volts AC service, transformed through a two winding isolation type transformer and rectified to 24 volts DC for operation of all signal initiating, signal sounding, trouble signal, and actuating (releasing) circuits. Provide secondary DC power supply for operation of system in the event of failure of the AC supply. Transfer from normal to emergency power or restoration from emergency to normal power shall be fully automatic and shall not cause transmission of a false alarm. Obtain AC operating power for control panel, [and] battery charger [, and air compressor] from the line side of the incoming building power source ahead of all building services. Provide independent properly fused safety switch, with provisions for locking the cover and operating handle in the "POWER ON" position for these connections and locate adjacent to the main distribution panel. Paint switch box red and suitably identify by a lettered designation.

Identify circuit conductors within each enclosure where a tap, splice or termination is made. Identify conductors by plastic coated self sticking printed markers or by heat-shrink type sleeves. Attach the markers in a manner that will not permit accidental detachment. Properly identify control circuit terminations.

Each zone shall encompass the area [protected by each riser] [of one hangar bay]. Upon activation of the detection system or overhead system manual release station(s), the corresponding overhead system protecting that area shall activate.

Each zone shall encompass [one hangar bay] [the monitors indicated]. Upon activation of [[detectors for] the overhead system] [two UV-IR detectors for more than 5 seconds] or activation of a manual release station, all monitors in that zone shall be activated.

[Each] [The] zone shall encompass [all hose stations] [the hose stations indicated]. Hose stations shall be activated upon activation of a hose station manual release station. Provide a manual release station at each hose station.

Provide weatherproof and guarded type alarm for each [group of] [deluge] [pre-action] valve(s). Alarms shall sound locally on the flow of foam solution in each system to which it is connected. Mount alarms on the outside of the outer walls of each building, at locations indicated. When more than one alarm gong is provided, provide permanent engraved rigid plastic or metal signs indicating to which system each gong is connected.

Provide electric [alarm horns] [alarm bells] to sound locally on operation of any system, regardless of whether water flows or not. When more than one alarm is provided, provide permanent engraved rigid plastic or metal signs indicating to which system each alarm is connected.

Provide equipment for the automatic transmittal of an alarm over the building fire alarm system. Arrange so that the detection system and the flow of solution in each system will actuate the alarm. [Activation of a single UV-IR detector shall not cause activation of the foam system but shall cause activation of the fire alarm system].

Provide switch with SPDT contacts to automatically transmit alarms upon flow of water or AFFF. Alarm actuating device shall [have mechanical diaphragm controlled retard device adjustable from 10 to 60 seconds and shall] instantly recycle.

Provide local [100 mm4 inch] electric alarm [bell] [horn] [_____] to indicate trouble [or failure of the [detection system] [or] [pre-action sprinkler piping system]]. Also connect trouble alarm into the building fire alarm control panel to indicate "trouble" on a separate zone labelled "Foam System Trouble".

Provide an approved automatic type electric motor driven air compressor including pressure switch, air piping, and [38 liter] [10 gallon][_____] minimum capacity tank. Compressor shall have a minimum capacity capable of charging the complete sprinkler system to normal system air pressure within 30 minutes. Provide each system with an approved automatic air pressure regulating device.

MIL-F-24385, [3] [6] percent.

Provide one pump to fill foam system tank. Pump shall have a minimum flow rate of 27 L/m 7 gpm. Pump shall be complete with 115 VAC motor, fused switch, power cord with plug and 3 meters 10 foot minimum suction and clear discharge hoses.

Foam solution shall be produced by introducing AFFF concentrate into the water stream by the balanced pressure proportioning method using a diaphragm pressure tank and ratio controller. [Provide proportioning system and storage tanks for hose lines independent of main proportioning system and tanks.]

Tanks shall be cylindrical steel ASME pressure vessels with a full Buna-N impregnated nylon inner tank or bladder designed to contain AFFF concentrate and to be used in conjunction with the concentrate ratio controller. Tanks shall be designed for working pressure of [1206 kPa (gage)] [175 psig] [_____] and hydrostatically tested at 1.5 times the working pressure in accordance with ASME standards at the factory. Tanks shall have UL or FM label and ASME stamp affixed to the vessel. Size tank to provide sufficient AFFF concentrate for the time specified when the system is discharging foam solution at total maximum system flow. Also provide connected reserve tanks(s) of equal capacity. Permanently label each tank with its capacity, type and percentage of concentrate, which system(s) it serves, and whether it is a main or reserve tank. Conspicuously post filling instructions near each group of tanks. Provide a gage or unbreakable sight glass to permit visual determination of level of tank contents. Prior to shop painting, abrasive blast clean tank exterior surface in accordance with SSPC SP 6 to a surface profile not to exceed 0.05 mm 2.0 mils and provide a MIL-P-24441 or SSPC coating system to the tank exterior. Prime tank exterior with one coat of MIL-P-24441/1, Formula 150 or SSPC Paint 22 primer applied to a dry film thickness of 0.076 mm 3 mils and topcoat with one coat of MIL-P-24441/7 Formula 156 (red) or SSPC Paint 22 topcoat (red) applied to a dry film thickness of 0.076 mm 3 mils.

Ratio controller shall be a modified venturi device with AFFF concentrate feed line from diaphragm tank(s), and integral concentrate metering orifice. Size for specified flow rate(s).

Foam solution shall be produced by introducing AFFF concentrate into the water stream by the balanced pressure proportioning method using a pump and proportioner. [Provide proportioning system and storage tanks for hose lines independent of main proportioning system and tanks.]

Self-contained, skid-mounted system, fully assembled at the factory and delivered complete and ready for use. Field connections shall be limited to water, electrical, and AFFF concentrate inputs, foam solution output, and foam concentrate return line to storage tank. Size system for required flow rate(s). The concentrate pump and all piping, valves, and fittings in contact with foam concentrate shall be of materials resistant to the corrosive effects of the AFFF concentrate. Concentrate pump shall be electric motor driven, drip proof, 240/480 volts, 60 Hz AC. Activation and operation of system shall be fully automatic, with manual over-ride and manual shut-down. Provide permanent engraved rigid plastic or corrosion resistant metal instruction plate for emergency manual operation, along with a similarly constructed label for each control device.

Size system for required flow rates. AFFF concentrate pump shall be positive displacement, electric motor driven, drip proof, 240/480 volts, 60 Hz AC. System operation shall be fully automatic, with manual over-ride and manual shut-down. Provide a pressure regulating device in the AFFF concentrate pump return line to maintain constant pressure on the concentrate piping system at all AFFF solution flow rates. Provide an in-line balanced pressure proportioning device at each system riser to automatically balance the AFFF concentrate pressure with the water pressure at the riser to provide correct proportioning over the range of flow rates calculated for that riser. The pump and all piping, valves, and fittings in contact with the foam concentrate shall be of materials resistant to the corrosive effects of the AFFF concentrate. Provide permanent engraved rigid plastic or corrosion-resistant metal instruction plate for emergency manual operation, along with a similarly constructed label for each control device.

Tank shall be designed for storage of AFFF concentrate at atmospheric pressure, and shall be [horizontal] [or] [vertical] cylindrical, fiberglass or polyethylene construction. Tank shall have the following: Drain valve located at the lowest point in the tank, connections for concentrate supply and return lines to the proportioners, top-mounted fill connections and inspection hatch, and a pressure/vacuum relief vent. All openings and tank connections shall be installed at the factory, no holes shall be made in the tank shell in the field. Tank shall include all necessary supports for free-standing installation. Provide a gage or unbreakable sight glass to permit visual determination of level of tank contents, unless liquid level is clearly visible through shell of tank. Size tank to provide sufficient AFFF concentrate for the time specified when the system is discharging foam solution at total maximum system flow. Also provide connected reserve tank(s) of equal capacity. Permanently label each tank with its capacity, type and percentage of concentrate, which system it serves, and whether it is a main or reserve tank.

Fixed, water motor operated, [with] [without] override to allow manual aiming. Oscillation arc shall be adjustable from at least 0 to 2.88 radian 165 degrees. Oscillation speed shall be adjustable from 0 - 0.52 radian 30 degrees per second. Nozzle shall be adjustable while in operation from 0.52 radian 30 degrees below to1.40 radian 80 degrees above horizontal, with lock or latching mechanism. Nozzle shall be [non aspirating] [air aspirating] type, adjustable while in operation from straight stream to fan-spray. Nozzle shall be capable of retaining the adjusted setting once the desired pattern has been set. [Nozzle shall produce a straight stream of 46 meters 150 feet at [1920 L/m] [500 gpm] [_____] and [690 kPa (gage)][100 psig] [_____].] [Nozzles shall provide a minimum application rate of [4.2] [_____] L/m per sq meter [0.10] [_____] gpm per square foot over [the entire floor area] [[_____] square meter feet of floor area underneath the aircraft wings and fuselage]]. Provide normally open 0S&Y gate valve in supply line at each monitor location.

Provide each hose station with flow-through reel and [_____] meter of 40 mm feet of 1 1/2 inch hard rubber hose and nozzles. Nozzle shall have pistol-grip ball shutoff valve. Nozzle shall be [non aspirating] [air aspirating] type. Provide normally closed quarter-turn ball valve in supply line at each hose station. Nozzle flow rate shall be [228 L/m] [60 gpm] [_____] minimum.

Provide [dual] [triple] [_____] outlet connections with integral gate valves and locate about one meter 3 feet above grade. Provide each outlet with 65 mm 2 1/2 inch male National Standard hose threads with cap and chain. Hydrant shall be controlled by 0S&Y gate valve located inside foam room. Provide wall escutcheon plate with "FOAM HYDRANT" in raised letters cast in plate. [Hydrant shall permit testing of each pre-action system riser at full design flow without charging the system supplied by the riser.]

NFPA 13, except steel piping shall be Schedule 40 for sizes smaller than 200 mm 8 inches, and Schedule 30 or 40 for sizes 200 mm 8 inches and larger. Pipe nipples 150 mm 6 inches long and shorter shall be Schedule 80 steel pipe. Water motor alarm piping shall be zinc-coated steel pipe and fittings. Rubber gasketed grooved-end pipe and fittings with mechanical couplings shall only be permitted in pipe sizes 40 mm 1 1/2 inches and larger. Rubber gaskets shall be UL listed for use in dry-pipe sprinkler systems. Use of restriction orifices, reducing flanges, and plain-end fittings with mechanical couplings (which utilize steel gripping devices to bite into the pipe when pressure is applied) are not permitted. Pipe and fittings in contact with AFFF concentrate shall be [material resistant to the corrosive effects of AFFF concentrate as approved by the manufacturer of the proportioning system] [stainless steel]. [Fittings on concentrate lines shall be flanged or welded only. Screwed or mechanical fittings will not be permitted.]

FS A-A-58092, Polytetrafluoroethylene (PTFE) tape. Pipe joint compound (pipe dope) is not acceptable.

FS WW-S-2739, Style Y (Y pattern). Provide duplex basket strainers with removable screens having standard perforations, 3 mm 0.125 inch in diameter in the riser beneath the deluge valves.

NFPA 13.

Provide valves as required by NFPA 13 and of types approved for fire service. Gate valves shall open by counterclockwise rotation. Check valves shall be flanged clear opening swing check type with flanged inspection and access cover plate for sizes 100 mm 4 inches and larger. Provide an OS&Y valve beneath each [deluge] [pre-action] valve in each riser, when more than one valve is supplied from the same water supply pipe. Butterfly valves are not acceptable.

Attach properly lettered approved metal signs conforming to NFPA 13 to each valve and alarm device. Permanently affix design data nameplates to the riser of each system.

Provide test connections about 2 meters 6 feet above the floor for each sprinkler system and locate at the hydraulically most remote part of each system. Provide test connection piping to a location where the discharge will be readily visible and where water may be discharged without damage.

Provide drain piping to discharge at safe points outside each building or to sight cones attached to drains of adequate size to readily receive the full flow from each drain under maximum pressure. Provide auxiliary drains as required by NFPA 13.

Provide where piping passes through walls, floors, roofs, and partitions. Secure sleeves in proper position and location during construction. Provide sleeves of sufficient length to pass through entire thickness of walls, floors, roofs, and partitions. Provide not less than 6 mm 1/4 inch space between exterior of piping and interior of sleeve. Firmly pack space with insulation and calk at both ends of the sleeve with plastic waterproof cement.

ASTM A 53, schedule 40 or standard weight, zinc-coated steel pipe sleeves. Extend sleeves in floor slabs 80 mm 3 inches above the finished floor.

Provide zinc-coated steel sheet having a nominal weight of not less than 4.40 kg per sq meter 0.90 pounds per square foot.

Provide one piece or split hinge type plates for piping passing through floors, walls and ceilings, in both exposed and concealed areas. Provide chromium plated metal plates where pipe passes through finished ceilings. Provide other plates of steel or cast iron with aluminum paint finish. Securely anchor plates in place.

[Two] [Three] way type with 65 mm 2 1/2 inch National Standard female hose threads with plug, chain, and identifying fire department connection escutcheon plate. Provide inlet connections about one meter 3 feet above grade.

Reduced pressure principle type. Proof shall be furnished that each make, model/design, and size of backflow preventer being furnished for the project is approved by and has a current "Certificate of Approval" from the FCCCHR List. Listing of the particular make, model/design, and size in the current FCCCHR List will be acceptable as the required proof.

NFPA 24, outside coated cement lined ductile iron pipe and fittings for piping under the building and to a point 1.50 meters 5 feet outside the building walls. Anchor the joints in accordance with NFPA 24 using pipe clamps and steel rods. Minimum pipe size shall be 150 mm 6 inches. Minimum depth of cover shall be [_____] [one meter] [3 feet]. Piping more than 1.50 meters 5 feet outside the building walls shall be [outside coated cement lined ductile iron pipe and fittings conforming to NFPA 24] [provided under Section 33 11 00 33 11 00 33 11 00 WATER DISTRIBUTION].

Provide as required by NFPA 24 for fire service. Gate valves shall conform to AWWA C500 or UL 262 with cast iron body and bronze trim, and shall open by counterclockwise rotation.

Provide with operating nut located about one meter 3 feet above grade. Gate valves for use with indicator post shall conform to UL 262. Indicator posts shall conform to UL 789. Paint each indicator post with one coat of primer and two coats of red enamel paint.

Except where indicator posts are provided, provide each gate valve in buried piping with an adjustable cast-iron valve box of a size suitable for the valve on which it is to be used. Boxes outside of paved areas may be of Acrylonitrile-Butadiene-Styrene (ABS) plastic or of inorganic fiber reinforced black polyolefin plastic. The head shall be round and the lid shall have the word WATER cast on it. The least diameter of the shaft of the box shall be 133 mm 5 1/4 inches. Coat each cast-iron box with bituminous paint.

Provide detectable aluminum foil plastic-backed tape or detectable magnetic plastic tape manufactured specifically for warning and identification of buried piping. Tape shall be detectable by an electronic detection instrument. Provide tape in rolls, 76 mm 3 inches minimum width, color coded for the utility involved, with warning and identification imprinted in bold black letters continuously and repeatedly over entire tape length. Warning and identification shall be CAUTION BURIED WATER PIPING BELOW or similar. Use permanent code and letter coloring unaffected by moisture and other substances contained in trench backfill material. Bury tape with the printed side up at a depth of 305 mm 12 inches below the top surface of earth or the top surface of the subgrade under pavements.

Provide under this section as specified in Section 31 00 00 31 00 00 31 00 00 EARTHWORK.

Use tapping or drilling machine valve and mechanical joint type sleeves for connections to be made under pressure. Bolt sleeves around the mains; bolt valve conforming to AWWA C500 or UL 262 to the branch. Open valve, attach drilling machine, make tap, close valve, and remove drilling machine, all without interruption of service. Notify the Contracting Officer in writing at least [_____] [15] calendar days prior to the date the connections are required; approval shall be received before any service is interrupted. Furnish all material required to make connections into the existing water supply systems, and perform all excavating, backfilling, and other incidental labor as required. [Furnish] [Government will furnish only] the labor and the tapping or drilling machine for making the actual connections to the existing systems.

Equipment, materials, installation, workmanship, fabrication, assembly, erection, examination, inspection, and testing shall be in accordance with the NFPA standards referenced herein. Install piping straight and true to bear evenly on hangers and supports. Conceal piping to the maximum extent possible. Piping shall be inspected, tested and approved before being concealed. Provide fittings for changes in direction of piping and for all connections. Make changes in piping sizes through standard reducing pipe fittings; do not use bushings. Cut pipe accurately and work into place without springing or forcing. Ream pipe ends and free pipe and fittings from burrs. Clean with solvent to remove all varnish and cutting oil prior to assembly. Make screw joints with PTFE tape applied to male thread only.

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.

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:

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.

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 6 meters 20 foot intervals throughout the piping systems. Bands shall be red enamel or self adhering red plastic tape.

Provide permanent labels in foam rooms, spaced at 6 meters 20 foot maximum intervals along pipe, indicating "WATER", "FOAM CONCENTRATE", and "FOAM SOLUTION" on corresponding piping.

Clean damaged areas of shop coated tanks in accordance with SSPC SP 11 and coat cleaned areas with the same materials used for the shop applied coating system.

Electrical work is specified in Section 26 20 00 26 20 00 26 20 00 INTERIOR DISTRIBUTION SYSTEM, except for control [and fire alarm] wiring. [Fire alarm system is specified in Section [ 28 31 74.00 20 28 31 74.00 20 28 31 74.00 20 INTERIOR FIRE ALARM SYSTEM] ["Fire Alarm and Fire Detecting Systems (Local)"]].

Provide control wiring, and connections to fire alarm systems, under this section in accordance with NFPA 70 and NFPA 72. Provide wiring in rigid metal conduit or intermediate metal conduit, except electrical metallic tubing may be used in dry locations not enclosed in concrete or where not subject to mechanical damage. Do not run low voltage DC circuits in the same conduit with AC circuits. [Run wiring to UV-IR detectors alone in separate conduit if required by the detector manufacturer.]

Flush the piping system with potable water in accordance with NFPA 13. Continue flushing operation until water is clear, but for not less than 10 minutes.

Prior to initial operation, inspect equipment and piping systems for compliance with drawings, specifications, and manufacturer's submittals. Perform tests in the presence of the Contracting Officer to determine conformance with the specified requirements.

The [_____] Division, Naval Facilities Engineering Command Fire Protection Engineer, will witness formal tests and approve all systems before they are accepted. The system shall be considered ready for such testing only after all necessary preliminary tests have been made and all deficiencies found have been corrected to the satisfaction of the equipment manufacturer's technical representative and written certification to this effect is received by the Division Fire Protection Engineer. Submit the request for formal inspection at least 15 working days prior to the date the inspection is to take place. The control panel(s) and detection system(s) shall be in continuous service for a "break-in" period of at least 15 consecutive days prior to the formal inspection. Experienced technicians regularly employed by the Contractor in the installation of both the mechanical and electrical portions of such systems shall be present during the inspection and shall conduct the testing. All AFFF concentrate, instruments, [including UV-IR detector test lamp and function test kit,] personnel, appliances and equipment for testing shall be furnished by the Contractor. All necessary tests encompassing all aspects of system operation shall be made including the following, and any deficiency found shall be corrected and the system retested at no cost to the Government.

The entire initiating, alarm, actuation systems shall be operated. As a minimum, operation and supervision of the following functions and devices shall be demonstrated:

When all of the initiating, alarm, actuation, and supervisory functions of the system operate to the satisfaction of the system manufacturer's technical representative and the Division Fire Protection Engineer, a complete discharge test of each system shall be performed to demonstrate satisfactory performance, proper AFFF concentration, mechanical operation and operation of valves, release devices, alarms, and interlocks which control the protected areas. These tests shall be conducted by experienced personnel according to the equipment and AFFF manufacturers' recommendations.

The manufacturer's representative shall test samples of foam solution taken from each system to ensure proper AFFF concentration. Provide protection for all electrical fixtures and equipment exposed to possible damage during tests and protect doors and other openings leading from the protected area(s), to prevent migration of foam solution into other areas or spaces.

After completion of tests flush all piping carrying AFFF concentrate and solution with fresh water. Piping normally containing AFFF concentrate when the system is in standby mode need not be flushed. Rinse with fresh water all equipment and building surfaces exposed to AFFF discharge.

Provide temporary measures to prevent AFFF from entering storm drains, [sanitary sewers,] drainage ditches, streams and water courses. [Do not allow AFFF concentrate or solution to come in contact with earth. Contain all discharged AFFF on paved surfaces.] [Collect all discharged AFFF and rinse and flushing water and dispose of it in an EPA - approved waste-water treatment facility which provides secondary (biological) treatment]. At least 15 days prior to the date flow testing is to take place, submit written plan for AFFF containment [and disposal] methods(s) to the Contracting Officer for approval.

Fill storage tanks including reserve tanks and piping normally containing concentrate when the system is in standby mode with [Contractor] [Government] furnished AFFF concentrate after acceptance of the system.

Provide the services of representatives or technicians from the manufacturers of the foam system, [and] control panel [, and UV-IR detectors], experienced in the installation and operation of the type of system being provided, to supervise installation, adjustment, preliminary testing, and final testing of the system and to provide instruction to Government personnel.

Provide operating instructions at control equipment and at each remote control station. Instructions shall clearly indicate all necessary steps for the operation of the system. Submit the proposed legend for operating instructions for approval prior to installation. Instructions shall be in engraved white letters on red rigid plastic or red enameled steel backgrounds and shall be of adequate size to permit them to be easily read.

Prior to final acceptance, the Contractor shall provide two sessions of 4 hours each of operation and maintenance training to the Base Fire Department and [Public Works] [Civil Engineering] personnel on two different days to accommodate both shifts of the Base Fire Department. Each training session shall include emergency procedures, and unique maintenance and safety requirements. Training areas will be provided by the Government in the same building as the protected areas. The training conducted shall use operation and maintenance manuals specified in paragraph entitled "Operations and Maintenance Manuals". Dates and times of the training period shall be coordinated through the Contracting Officer not less than two weeks prior to the session.

       Products                   Inch-Pound          Metric
   a.  Air Compressor
         Tank Capacity            = 10 gallons        = 38 liters

			
   b.  Concentrate Fill Pump
         Flow Rate                = 7 gpm             = 27 L/m

			
   c.  Diaphragm Pressure
         Proportioning Tanks
         Working Pressure         = 175 psig          = 1206 kPa (gage)