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READ AND REMOVE THIS PAGE BEFORE PLACING
THE SPECIFICATION SECTION IN THE CONTRACT

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DIVISION 15:  MECHANICAL

SECTION 15365 ‑ HALOGEN AGENT EXTINGUISHING SYSTEMS

USE:	Furnishing and installing a halogen agent extinguishing system.

NOTES TO SPECIFIER:

	A.	Options within paragraphs are identified by enclosure in brackets; blank spaces enclosed by brackets [_____] provide for information to be inserted, as appropriate, to individual projects.

	B.	TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES, the specifier must edit (delete, substitute or add to the text).  The remaining paragraphs must be renumbered.

	C.	DELETE FOR FINAL COPY: Notes to the Specifier, located between lines of asterisks; all [brackets], underlining, boldface, and italics, within the paragraphs; and this page.  (Open Reveal Codes [alt F3] to do this accurately.)

	D.	To Edit “(Footer B)”: (Corel 8).  ENTIRE FOOTER SHOULD BE BOLDED.  Click in the footer and delete the “Project Name (ftr B)” text and replace it with the Name of the Project (upper and lower case).  Replace date with current MM/YY (WITHOUT BRACKETS).

	E.	The Guide Specifications are intended to be continuously reviewed and revised.  User’s technical comments are appreciated.  Also, other related or similar specification that are written “from scratch” that could benefit others, or other questions can be sent to NSTC A/E Group, ST 110, or call (303) 987-6868.

DRAWING DATA REQUIRED: 

REQUIRED SPEC MODIFICATIONS:

GENERAL NOTES

A.	Whenever entire articles, paragraphs or subparagraphs are not applicable, the articles, paragraphs or subparagraphs should be deleted; when necessary, reletter or renumber articles, paragraphs or subparagraphs.

B.	THIS GUIDE IS NOT INTENDED AS A SUBSTITUTE FOR READING THE ENTIRE SECTION.

TECHNICAL NOTES

A.	1.1B: Select or add applicable specification sections.  Do not list specification sections from Division 15.

B.	1.2A:  Insert required time delay.

C.	1.3:  Select or add applicable references.

D.	1.4B:  Insert number of copies of the manufacturer's descriptive data required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

E.	1.4C:  Insert number of copies of the manufacturer's installation instruction required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

F.	1.4D:  Insert number of copies of operation instructions required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

G.	1.4E:  Insert number of copies of the manufacturer's maintenance instructions required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

H.	1.4F:  Insert number of copies of shop drawings required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

I.	1.4G:  Insert number of copies of Design Computations required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

J.	1.4H:  Insert number of copies of Design Drawings required.  Normally 5 copies are required.  Distribution after review is normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to the project file.

K.	2.1G:  Select applicable phrase.

L.	2.2C:  Select applicable phrase.

M.	3.1C3:  Select applicable phrase.

N.	3.1F:  Select applicable phrase.

O.	4.1 and 4.2:  When a "lump sum" Contract is used, delete the title PART 4:  MEASUREMENT AND PAYMENT, and both articles from this section.  Measurement and payment will be addressed in Part 4 of Section 01010 -Summary of Work.

REVISIONS OF THIS SECTION:
CSI format, editorial changes: 12/01
Metric:  
Technical Update: 01/91

SECTION 15365

HALOGEN AGENT EXTINGUISHING SYSTEMS

PART 1:  GENERAL

1.1  SUMMARY:

	A.	Section Includes:  The design and complete installation of the halogenated fire extinguishing system.  It is the intent of this performance‑oriented specification to provide a smoke detection and total flooding Halon 1301 fire extinguishing system.

1.2  REFERENCES:

	A.  Factory Mutual, Inc.:
	FM             			Approval Guide, 1982

	B.	Federal Specifications:
	Fed. Spec. WW‑H‑171E   		Hangers and Supports, Pipe
	Fed. Spec. WC‑3‑75B/GEN  	Circuit Breakers, Molded Case; Branch Circuit and Service

	C.  Military Standards:
	Mil. Spec. 101B       		Color Code for Pipelines and Compressed Gas Cylinders

	D.  National Fire Protection Association:
	NFPA 12A‑87 				Halon 1301 Fire Extinguishing Agent Systems 
	NFPA 13‑87    			Standard for the Installation of Sprinkler Systems
	NFPA 70‑87    			National Electrical Code
	NFPA 72E‑87   			Automatic Fire Detectors

	E.  Underwriters' Laboratories, Inc.:
	UL             			Fire Protection Equipment Directory (1989)
	UL            			Electrical Construction Materials Directory Supplement -November 1988
	UL 268-81				Smoke Detectors for Fire Protective Signaling Systems Second Edition; July 20, 1987 Bulletin	May 5, 1988
1.3  SYSTEM DESCRIPTION:

	A.	System:  The system shall include a fixed supply of Halon 1301 in storage containers, pressure switches, nozzles, piping, valves, control panel, smoke detectors, and all other accessories necessary for a complete system ready for operation.  Appropriate equipment shall be UL listed or FM approved for specific use on Halon 1301 systems unless otherwise specified.

	B.	System Operation:  System operation shall be based on a crosszoned, priority matrixed, "superzone" or equivalent smoke detection concept.  An alarm condition on either smoke detection zone shall cause the alarm horns to sound within the protected area with a steady tone and shall close all doors normally held open.  An alarm condition on the second smoke detection zone shall cause the alarm horns to sound with a pulsating tone rather than a steady tone, shall shut off all area ventilation equipment and close all dampers, shall discharge Halon after a preset time delay, shall signal the computers that a fire condition exists, and shall actuate the building fire alarm system to 
sound a firm alarm.  The time delay shall be [    ] seconds.  Operation of any manual release station shall cause the alarm horns to sound with a pulsating tone, shall discharge the Halon, shall actuate the building fire alarm system to sound a fire alarm, shall cause the area ventilation equipment to shut off, shall close all doors normally held open, shall signal the computers that a fire condition exists, and shall close all dampers.  Operation of any abort switch shall restart time delay but shall not abort discharge of the Halon when the manual release station is activated.  Actuation of a manual release station or underfloor or above ceiling smoke detector shall be indicated, by device, on the remote lamp panel.  A reset switch shall be provided in the control panel which will restore the system to normal operating condition after all alarm initiating devices are reset.  Any manual release station or smoke detector shall initiate the system operation, as described above, during a single break or a single ground fault condition on any alarm initiating circuit (Class A feature).  The Halon discharge circuit and alarm horn sounding circuit shall also operate during a single break or a single ground fault condition on the circuits.  A silencing switch shall be provided on the control panel that will silence the alarm horns but not affect the remote lamp panel operation or reset the system.  Underfloor and above floor areas shall be flooded with Halon 1301 to provide a minimum 5 percent concentration at 70 degrees F.  Maximum concentration shall not exceed 7 percent above the raised floor and below the raised floor.  The total discharge time shall not exceed 10 seconds.  Area openings shall be protected as required by Section 2‑2.2 of NFPA 12A.

	C.	Electrical Supervision:  The manual release stations, smoke detectors, Halon discharge circuit, and alarm horn circuits shall be supervised to indicate a break or ground fault condition, which shall be indicated, by circuit, by a trouble signal on the control panel.  A trouble signal also shall occur when the alarm horn silence switch is not in the normal position; with a pressure drop in Halon containers; or upon failure of the normal AC power supply upon open battery connection, low battery voltage, or operation of any other disconnect switch.

	D.	Air Handling System:  The room air handling system must shut down upon activation of the cross‑zoned detectors unless the air handling units are only recirculating air within the room being protected.  In addition, dampers for ductwork in perimeter walls must be automatically closed upon activation of the crosszoned detectors.

	E.	Time Delay:  A time delay is required for evacuation of all personnel from the protected space prior to discharge of the Halon.  The following formula should be used:

           TD = (       F      )  + 15 seconds
                 3.5 feet/sec

     	where TD = time delay (seconds) and
            F = distance from most remote point in the area being
                protected to the closest exit door form the space
                (feet).

Travel distance is measured on the floor starting one foot from the most remote point, curving around furniture, storage and ending at the center of the doorway.
1.4  SUBMITTALS:

	A.	General:  Submittals shall be according to Section 01300 ‑ Submittals.

	B.	Manufacturer's Literature:  Submit [____] copies of the manufacturer's descriptive data for the halogen agent extinguishing system to be used on this project.

	C.	Installation Instructions:  Submit [____] copies of the manufacturer's installation instructions for the halogen agent extinguishing system when it is a pre-engineered type, UL or FM approved installation to be used on this project.

	D.	Operation Instructions:  Submit [____] copies of descriptive data covering the proper testing, and operation of the system installed.  In addition, a list of all smoke detectors with their sensitivity setting, serial number, and location shall be provided.

	E.	Maintenance Instructions:  Submit [____] copies of the manufacturer's maintenance instructions for the halogen agent extinguishing system to be used on this project.

	F.	Shop Drawings:  Submit [____] copies of shop drawings for the location and flow rate of each nozzle including the equivalent orifice area, equivalent lengths of all pipe and fittings, the location and size of the facility receiving protection, and a complete wiring diagram indicating wiring sequence of all devices.  A complete control panel schematic showing and identifying all control panel terminal points shall be on a single sheet drawing with a description of panel operation.  Any special features shall be adequately explained.  A bill of materials shall be furnished with the shop drawings.

	G.	Design Computations:  Submit [____] copies of design calculations for standby battery requirements, and Halon 1301 flow to be used on this project.  [Design shall be according to the requirements of this specification section.]

H.	Design Drawings:  Submit [____] copies of design drawings showing the location of the following:
		1.  Halon containers
    	2.  Control panel
    	3.  Smoke detectors
    	4.  Manual release stations
    	5.  Abort switches
    	6.  Remote alarm lamp panel (if needed)
    	7.  Battery cabinet (if needed)
    	8.  Alarm horns
    	9.  Air handling equipment
   	10.  Remote trouble bell (if needed)
   	11.  Location and type of existing building fire alarm equipment

Drawings shall show floor plan and sections of all areas to be protected including all wall, floor or ceiling openings, air supply and return registers, electrical connections and devices for fan shutoff and door and damper releases.  A riser diagram showing the interconnection between all equipment shall be provided.

1.5  QUALITY ASSURANCE:

	A.	Criteria:  The halogenated fire extinguishing system shall meet the requirements of NFPA 12A‑1980.

	B.	Contractor Qualifications:  A specialist with successful installation of Halon 1301 systems and smoke detector systems according to NFPA 12A and 72E.  The Contracting Officer may reject any proposed installer who cannot show evidence of such qualifications.  The services of a technician provided by the control equipment manufacturer shall be provided to supervise installation, adjustments, and tests of the system.

	C.	Installer Qualifications:  Experienced at installing Halon 1301 fire extinguishing systems.  Prior to installation, the Contractor shall submit, for the approval of the Contracting Officer, data showing that the installer has successfully installed Halon 1301 fire extinguishing systems of the same type and design as specified herein or has a firm contractual agreement with a subcontractor having such required experience.  The data shall include the names and location of at least two locations where the Contractor or the subcontractor referred to above has installed such systems.  The Contractor shall indicate the type and design of these systems and certify that these systems have performed satisfactorily in the manner intended for a period of not less than 18 months.

	D.	Labeling Requirements:  Components shall be Underwriters' Laboratories, Inc. (UL) or Factory Mutual (FM) listed and labeled.

PART 2:  PRODUCTS

2.1  EQUIPMENT:

	A.	General:  The Contractor shall provide as part of the installation, any unique lifts, slings, dollys, or assemblies which are required to enable prompt replacement of agent cylinders or containers.

	B.	Storage Containers:  Shall be steel pressure vessels that have been hydrostatic pressure tested.  The containers shall be mounted on the walls or floors as recommended by the manufacturer.  Containers shall be equipped with a pressure gauge to visually display internal pressures.  Containers shall comply with Section 1‑9.5 of NFPA 12A.  Halon containers and any pressurized release containers shall be equipped with pressure switches that will cause a trouble signal when the pressure in a container drops to 275 psi for 360‑psi systems and 490‑psi for 600‑psi systems.  Containers shall have permanent nameplates as required by NFPA 12A.  A minimum of two electrical solenoids or control heads shall be provided for the main bank of containers when more than one container is provided and containers are manifolded together.  Provide a reference to a reserve supply of Halon only when automatic sprinkler protection is lacking in the space.

	C.	Nozzles:  Shall be the manufacturer's standard product and shall conform to Section 1‑10.5 of NFPA 12A.

	D.	Piping:  Shall comply with Section 1‑10 of NFPA 12A. Piping shall be scheduled 40 black or galvanized steel pipe or copper pipe.  Pipe hangers and supports shall be steel.  Pipe joints shall conform to Section 1‑10.2 of NFPA 12A.

	E.	Components:  Threaded valves, such as selector or check valves, and pressure switches, when installed in rigid pipe lines, shall have a union immediately downstream from the equipment to facilitate inspection, repair, or replacement.  Valves shall be UL listed for use with Halon systems.

	F.	Control Panel:  Shall contain all equipment necessary for testing, supervision, and operation of the extinguishing system.  A trouble condition on the system shall light amber lamps indicating the type of trouble or circuit in trouble condition.  Any trouble signal shall sound a trouble buzzer.  A switch shall be provided to silence the trouble signal buzzer but not extinguish the lamps indicating trouble until the trouble condition is corrected. A switch to silence the alarm horns shall be provided.  Operation of this switch shall cause a trouble condition or allow subsequent alarm signals upon a new alarm condition.  A reset switch shall be provided that will restore system to normal operation after all alarm initiating devices are reset.  Operation of any other disconnect switch shall cause a trouble condition.  The control panel equipment shall be housed in a steel, flush‑mounted cabinet with a full front hinged door having a key lock.  The cabinet front shall have a prominent nameplate of etched metal or plastic identifying the cabinet as the Halon system control panel.  All control panel switches shall be within the locked cabinet.  Trouble indicating lamps and all other indicating lamps shall be mounted on the cabinet door or mounted within the cabinet where they are easily visible through glass or plastic viewing panel.  All lamps, switches, controls, meters, and fuses shall have identifying nameplates of etched metal or plastic.  Nameplates for fuses also shall include ampere rating.  One spare fuse of each ampere rating and six spare lamp bulbs, unless lamps are light emitting diodes, shall be provided.  A copy of the system circuit diagram and control panel schematic shall be provided within the control cabinet.  Circuits shall be wired and identified by zones as indicated.  A "Power On" lamp shall be provided.  Zones shall be as follows:

1.	ab	Zone 1 ‑ Circuit A Smoke Detectors, Underfloor and Ceiling
2.	ab    	Zone 2 ‑ Circuit B Smoke Detectors, Underfloor and Ceiling
3.	ab    	Zone 3 ‑ Halon Manual Release Stations
4.	ab    	Zone 4 ‑ Spare
    	5.	Additional zones may be required on the halon system control panel.  Control panels are limited by the number of ionization type smoke detectors which can be placed on each zone.  Ceiling and underfloor detectors can be combined on the same zones.  Provide a separate zone if above ceiling smoke detectors are provided.

	G.  Smoke Detectors:

1.	Ionization smoke detector shall operate on the ionization principle only and shall be activated by the presence of invisible products of combustion.  The unit shall have a minimum of two ionization chambers and shall require no replacement or readjustment after fire alarm has been given to restore it to normal operation.  The sensitivity shall be adjustable to compensate for conditions under which it is to operate.  The detector shall not be sensitive to changes in humidity.  All components shall be corrosion resistant and vibration shall have no effect on detector operation.  The detector shall be supervised such that power failure shall cause a trouble signal to sound at the control panel and indicate which circuits are in trouble on the panel.  The detector shall incorporate a visual indication of detector actuation.  The detector shall be mounted on a 4‑inch outlet box.

	2.	The detector shall have a factory serial number or other permanently attached designation to identify that particular detector, its location, and its sensitivity setting.  Detection shall be listed by UL Standard for Smoke Detectors for Fire Protective Signaling Systems, UL 268.

3.	Photoelectric smoke detectors shall operate on photoelectric principle and be activated by presence of products of combustion at a sensitivity of 1.5 percent.  The unit shall incorporate a solid state light emitting diode (LED) light source.  The detector shall incorporate a visual indication of detector actuation.  The detector shall incorporate a built‑in test feature so each unit can be functionally tested without generating smoke.  Detector shall be listed by UL Standard for Smoke Detectors for Fire Protective Signaling Systems, UL 268.

	4.	A remote lamp panel shall be provided to indicate which underfloor smoke detector or manual release station is in alarm by the lighting of a lamp.  Panel shall be graphic type showing the location of each detector and release station with respect to a floor plan.  Lamp panel shall be of stainless steel or brushed aluminum with minimum thickness of 0.032 inches.  Panel shall be surface‑mounted.  A momentary contact lamp test switch shall be provided or lamps shall be light emitting diode (LED) type.  Six spare lamp bulbs shall be provided unless lamps are light emitting diodes.

	H.	Audible Alarm Signals:  Shall be horns [and remote 4‑inch trouble bell] located where indicated on drawings.  Horns shall be surface‑mounting type and shall have minimum output of 85 dBA at rated voltage measured 10 feet from the horn.

2.2  FABRICATION:

	A.	Manual Release Stations:  Shall operate the Halon system for the area in which they are located.  Stations shall be double action type.  The stations shall operate electrically and shall be installed on surface‑mounted boxes.  Stations shall be finished in a red color but shall be distinguished from manual fire alarm stations.  Stations shall have molded, raised‑letter operating instructions of contrasting color.  Boxes requiring breaking of glass panels for operation are not acceptable; however, boxes employing glass rods are acceptable.  The use of a key or wrench shall be required to reset the station.  Switches and contacts shall be rated for the voltage and current at which they shall operate.  The stations shall have a manual Halon actuation switch.

	B.	Power:  AC power input to the Halon system power supply shall be the 120/208 volt service to the building.  This service connection shall be at the distribution panel indicated.  System circuit breaker shall be provided conforming to Fed. Spec. WC‑3‑75B/GEN.  Circuit breaker shall be mounted in a separate panelboard painted red, marked as "Halon 1301 System," and with a locking cover.  Standby power shall be from lead‑acid or nickel‑cadmium wet‑cell or sealed batteries having sufficient capacity to operate the system for 24 hours and to sound the alarm horns for 15 minutes if AC power fails.  Wet‑cell batteries shall be housed in a ventilated locking metal cabinet separate from the control panel, but sealed batteries may be incorporated in the control panel.  A glass or plastic window through which the wet‑cell batteries may be viewed shall be provided.  The cabinet shall be located to allow convenient viewing and servicing of the batteries.  The wet‑cell batteries shall rest on a nonmetallic base and the cabinet interior shall be corrosion resistant.  Batteries, control panel, and charger shall be interconnected by not more than 10 feet of No. 12 AWG wire.  Batteries shall "float" on the charger circuit.  Interruption of AC power shall not affect system operation.  The battery charger unit shall be fully automatic type with a varying charging rate between a suitable trickle rate and a high rate depending upon battery voltage and shall maintain batteries in a fully charged condition.  Manual controls shall be provided to change the floating voltage.  The charger shall include a DC voltmeter and DC ammeter.  The charging unit and its controls and indicating devices may be integral in either the control panel or battery cabinet.  System power should be connected ahead of main disconnect switch for entire building or main distribution panel for computer facility.  Connection should be made to an emergency panel if existing.  Batteries can be deleted if another secondary source of power is available (i.e., generator).

	C.	Signage:  Shall be provided for evacuation and safety of personnel.  Signs shall be provided adjacent to Halon system control panel and all evacuation alarm horns.  Sign shall read:  "WHEN THIS FIRE ALARM HORN SOUNDS A STEADY TONE, EVACUATE THE ROOM.  WHEN THE HORN SOUND CHANGES TO A PULSATING TONE, HALON 1301 WILL BE DISCHARGED AFTER A TIME DELAY."  Signs shall be provided at each door into the room protected with Halon system.  Sign shall read "THIS AREA IS PROTECTED BY HALON 1301 FIRE EXTINGUISHING SYSTEM.  DO NOT ENTER WITHOUT AUTHORIZATION DURING OR AFTER DISCHARGE."  [Sign shall be provided adjacent to a remote 4‑inch trouble bell.  Sign shall read "NOTIFY SECURITY PERSONNEL OR BUILDING MANAGER WHEN THIS BELL SOUNDS."]  Signage shall be stainless steel or brushed aluminum, 0.032 thickness minimum or laminated plastic with letters of a contrasting color, 1‑inch high and 1/8‑inch wide.

PART 3:  EXECUTION

3.1  INSTALLATION:

	A.	General:

	1.	Installation of Halon 1301 containers shall comply with Section 1‑9.5 of NFPA 12A.

	2.	Halon 1301 containers shall be located as recommended in paragraph 1‑9.4 of NFPA 12A.  Careful consideration must be given to the placement of smoke detectors.  This specification is based on cross‑zoned smoke detectors activating the Halon 1301 discharge.  Locations of detectors shall be engineered for the specific area giving due consideration to air currents and patterns and designed in accordance with NFPA 72E, Automatic Fire Detectors.  Detectors shall not be located within 3 feet of supply air registers.  Detectors shall be located on the ceiling and under the raised floor area and above a suspended ceiling where the space is used as an air plenum.  Each separate space (underfloor, room and above ceiling) shall be treated individually.  The number of air changes in each space will determine the number of detectors needed in each space.  Control panel and lamp panel should be within the computer room near the main exit.  Release stations and abort switches shall be located next to all exit doors from the protected spaces.  Sufficient alarm horns shall be provided to be heard throughout the space above the ambient noise level.  If needed, remote trouble bell shall be located in an adjacent corridor outside the protected space where the signal could be heard by guard personnel, etc., during off‑duty hours.  Cabinets for wet‑cell batteries are generally hidden for aesthetic reasons.

    	3.	The total design should insure that no significant unclosed openings remain around the perimeter of the protected area.  Unclosable openings can be protected as required by paragraph 2‑2.2 of NFPA 12A.  This is especially important near the floor since the Halon 1301 gas will "flow" out any opening since it is heavier than air.  Doors should be provided with sweeps at the bottom and floor drains should be provided with traps.

    	4.	The design may include provision for a means of ventilating the space in the case of agent discharge.  Normally, forced ventilation of a space is usually achieved by use of open windows and doors and portable fans.  Each proposed installation should be evaluated separately to determine whether any additional type of exhaust system is necessary.  However, this specification is for a Halon 1301 fire extinguishing system only.

	B.	Manual Release:  Stations shall be mounted with the operating handle 4‑1/2 feet above floor level.

	C.  Piping:

		1.	Valves shall be installed to give sufficient room for expansion of adjoining piping and for repair or removal without interfering with another valve or pipe.

 		2.	Pipe and fittings shall be cleaned and all burrs removed from pipe ends before assembly.  The entire piping system shall be cleaned by blowing air through before any nozzles or discharge devices are installed.

		3.	Piping through typical building walls, partitions, floor slabs, and roof slabs, shall be run through sleeves of Schedule 40 pipe at least two sizes larger than pipe being run and not smaller than 1 inch.  Sleeves through walls in finish spaces shall be flush.  Sleeves shall be packed with mineral wool or equal so as to be dust tight.  [Sleeves through roof slabs shall extend above roof 6 to 10 inches and shall be properly flashed.]

		4.	Conduit, beam, and "C" clamps shall not be used.  Piping shall be anchored to rigid members such as walls, floors, roofs, and columns to prevent longitudinal or lateral sway.  Hangers and supports shall be installed as specified in Fed. Spec. WW‑H‑171E and NFPA 13.  Pipe lines shall not be used to support other pipe lines.  Pipe supports shall be installed to avoid interference with other piping, conduit, structures, and equipment.  Maximum spacing of supports shall be 10 feet.

		5.	Color code pipelines and indicate flow direction in accordance with Mil. Spec. 101B.

	D.	Control Panel:  Halon system control panel and any remote panels shall be located with base 4 feet above the finished floor.

	E.	Smoke Detectors:  Shall be mounted on the ceiling, [above the ceiling] and in the underfloor space in accordance with NFPA 72E.  The number and spacing of smoke detectors in each individual space (raised floor, room and above ceiling) shall be determined by the number of air changes for that space.  Underfloor detectors shall be installed face down near the top of the raised floor.  Detectors shall not be located within 3 feet of supply air registers.  Adjacent detectors shall be on alternate zones.

	F.	Evacuation Alarm Horns:  Shall be mounted at least 8 feet above the floor level unless limited by ceiling height or otherwise noted.

	G.  Wiring:

	1.	System wiring for detector, alarm horns, Halon discharge, and manual release station circuits shall be solid copper conductor not less than No. 16 AWG size.  Wiring for the Halon system power supply, battery power supply and fan shutdown or door release shall be copper conductors of not less than No. 12 AWG size.  Conductors shall have an insulation rated at least 75 degrees C.  Wiring shall conform to NFPA 70, Article 760.  All conductors shall be identified by circuit.  All conductors shall be installed in metal conduit or tubing.  Mounting boxes for exposed work shall be iron or cast aluminum.

2.	All wiring shall be installed in a neat and workmanlike manner and shall be trained parallel with or at right angles to panel sides and backs.  All circuit conductors entering or leaving each panel shall be connected to terminal blocks with each terminal marked for identification.  All wiring within panels shall be readily accessible without removing any component parts.

3.3  FIELD QUALITY CONTROL:

	A.	Testing:  The Contractor shall conduct the performance and acceptance tests of the system according to NFPA 12A.  The Contractor shall furnish necessary equipment, labor, and materials to conduct the testing.  Testing shall be conducted in the presence of the Contracting Officer who shall be given 48 hours notice before any test is to be conducted.  All testing shall be coordinated with and approved by the Contracting Officer.  A letter certifying that the installation is completed and fully operational shall be forwarded to the Contracting Officer.  The letter shall include the names and titles of the witnesses of the preliminary tests.  The Contractor and an authorized representative from each supplier of equipment shall be in attendance to make necessary adjustments related to the testing.  Operation of all mechanical and electrical equipment shall be made to ensure correct operation and function.  Use of temporary sealing methods shall be made to ensure correct operation and function.  Use of temporary sealing methods to prevent the loss of any testing agent is not permitted.  Each smoke detector shall be activated by using actual products of combustion.  Installed pipe and fittings shall be pressure tested with nitrogen or carbon dioxide prior to final connection of the containers.  No Halon 1301 shall be discharged; however, the system shall be tested with a discharge of Halon 122 substituted for Halon 1301.  A recording meter shall be furnished by the Contractor to record on tape the Halon concentration.  A minimum 5% concentration shall be maintained for 3 minutes and a minimum 3% concentration shall be maintained for 5 minutes throughout the area.  The 7% concentration shall not be exceeded for the area above the raised floor or below the raised floor area.  Sample concentrations shall be recorded from three different locations, as directed by the Contracting Officer, during the test.  If the concentrations are not within the limits or the system otherwise fails, inservice tests shall be conducted again upon completion of repairs or corrections.  The Contractor shall furnish all Halon 122 for the tests.

3.4  DEMONSTRATION:

	A.	Requirements:  Upon completion of installation and after circuitry has been energized, the Contractor shall demonstrate capability and compliance of system with requirements.  Malfunctioning units shall be corrected and retested by the Contractor to demonstrate compliance with the specifications.

3.5  TRAINING OF GOVERNMENT EMPLOYEES:

A.	Requirements:  See Section 01700 - Contract Closeout.

PART 4:  MEASUREMENT AND PAYMENT

4.1  METHOD OF MEASUREMENT:

	A.	Units:  The work described in this section will not be measured for payment.

4.2  BASIS OF PAYMENT:

	A.	Payment:  No direct payment for the work described under this section will be made.  The Contractor shall include consideration for this item in the bid price for other items of the Contract.

END OF SECTION

HALOGEN AGENT EXTINGUISHING SYSTEMS
12/01
Project Name (ftr B)