Section 212200 fire detection/inergen suppression system

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This master should be used by designers working on Port of Portland construction projects and by designers working for PDX tenants (“Tenants”). Usage notes highlight a few specific editing choices, however the entire section should be evaluated and edited to fit specific project needs.




      1. Provide all engineering design, materials, and labor for a complete fire detection/Inergen suppression system including charged Inergen storage cylinders, nozzles, control panel, detectors, wiring, alarm, and all other equipment necessary for a complete operational system.

      2. The Contractor shall, at a minimum, provide 24-hour emergency service 7 days a week and shall be able to respond to an emergency situation within 2 hours of receiving an emergency trouble call.


      1. The system design shall be based on the use of selector valves to direct the flow of Inergen agent into the protected zone. Base the quantity of Inergen cylinders on the largest zone of protection. Provide cylinders for adequate protection of the largest protected zone and provide selector valves for discharge of proper design concentration of Inergen into the protected zone.

      2. The drawings indicate the general arrangements of the areas to receive detection and Inergen protection. Review the drawings so that all items affecting the operation of the fire detection/Inergen suppression system (such as equipment location, air diffusers, damper closures, and door openings) are considered in the design of the engineered system.


      1. Section 210500, Common Work Results for Fire Suppression

      2. Section 210529, Hangers and Supports for Fire Suppression Piping and Equipment

      3. Section 210553, Identification for Fire Suppression Piping and Equipment


      1. ANSI: American National Standards Institute

        1. ANSI B16.3: Malleable Iron Threaded Fittings, Classes 150 and 300

      2. ASTM: American Society for Testing and Materials

        1. ASTM A53 or A120: Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

      3. CGA: Compressed Gas Association

      4. IBC: International Building Code

      5. NFPA: National Fire Protection Association

        1. NFPA 70: National Electric Code

        2. NFPA 72: National Fire Alarm and Signaling Code

        3. NFPA 2001: Standard on Clean Agent Fire Extinguishing Systems

      6. UL: Underwriters Laboratories

        1. UL 1076: Standard for Proprietary Burglar Alarm Units and Systems


      1. All equipment and devices used shall be listed in the UL Fire Equipment Directory. Design and installation of the fire detection/Inergen suppression system shall be in strict accordance with the drawings, specifications, regulatory agencies, and applicable standards including, but not limited to:

        1. NFPA 70: National Electric Code

        2. NFPA 72: National Fire Alarm and Signaling Code

        3. NFPA 2001: Standard on Clean Agent Fire Extinguishing Systems


      1. The system shall be an Inergen total flooding, gaseous, clean agent, fire suppression system designed to provide a uniform concentration of Inergen for the protected area.

        1. Provide the required amount of Inergen to obtain a uniform (minimum) concentration as required by the manufacturer’s design manual for 10 minutes. Take into consideration such factors as unclosable openings (if any), “rundown” time of fans, time required for dampers to close (and requirements for any additional dampers), and any other feature of the facility that could affect concentration. The design concentration shall be 34.2 percent by volume at 65ºF.

      2. Cross-Zoned or Counting Zone Smoke Detection: The Inergen system shall be automatically actuated by either counting zone detection circuits or cross-zoned detection circuits. Smoke detectors shall be ionization detectors and photoelectric with compatibility listings for use with the control unit. Install smoke detectors at no more than 250 square feet of coverage per detector. Alternate the detectors throughout the protected area with the system requiring two detectors in alarm prior to automatic agent release.


      1. Activation of any single smoke detector in any detection zone shall:

        1. Cause a first-stage alarm.

        2. Cause a general alarm bell to sound in each of the protected rooms as noted.

        3. Energize a lamp on the activated detector and control panel.

      2. Activation of a second smoke detector shall:

        1. Transmit an alarm signal to remote monitoring or building alarm panel.

        2. Cause a second-stage (pre-discharge) alarm to operate in the protected area.

        3. Operate auxiliary contacts for DDC system.

        4. Initiate a programmable time delay (Inergen agent release).

        5. Abort switch operation.

      3. Upon completion of the time delay the Inergen system shall:

        1. Cause a discharge alarm to be activated.

        2. Activate visual alarms (strobe) at protected area entrance.

        3. Energize Metron actuator for Inergen cylinders releasing gaseous agent into the protected area.

        4. Operate auxiliary contacts for emergency power off in computer room.

        5. Energize Metron actuator for appropriate selector valve or valves.


      1. Provide double action manual releasing stations at each exit of the protected area and when activated, immediately release the Inergen agent and cause all audible/visual alarms to activate. In addition, activation of the manual releasing stations shall cause immediate shutdown of air units.

      2. Provide abort stations at each exit of the protected area and shall, when operated, interrupt the discharge of Inergen agent and emergency power-off functions. The abort stations shall be momentary devices (dead-man) requiring constant pressure to maintain contact closure. Manual releasing station activation shall override any abort station. Abort station operation shall be in accordance with UL guidelines.


      1. For the systems, equipment, and components specified herein, submit product/material data; shop drawings; operation and maintenance data; as-constructed data; installation, startup, and testing manuals; operation and maintenance manuals; and as-constructed drawings.

        1. Material and equipment information shall include manufacturer’s catalog cut sheet and technical data for each component or device used in the system. This shall include, but not be limited to, the following:

          1. Detectors.

          2. Manual discharge switches.

          3. Control panel.

          4. Release devices.

          5. Alarm devices.

          6. Agent storage cylinders.

          7. Mounting brackets.

          8. Discharge nozzles.

          9. Abort stations.

          10. Piping isometrics.

          11. Flow calculations.

          12. Valves and actuators.

        2. The drawings shall indicate locations, installation details, and operation details of all equipment associated with the Inergen system. Provide floor plans showing equipment locations, piping, point-to-point wiring, and other details as required. Floor plans shall be drawn to a scale of not less than 1/8"=1'-0". Elevations, cross sections, and other details shall be drawn to a larger scale as required. Provide isometric piping layouts with the shop drawings. In addition, provide point-to-point electrical layout drawings.

      2. Submit detailed system description and sequence of operation.

        1. Provide sequence of operation, electrical schematics, and connection diagrams to completely describe the operation of the Inergen system controls.

      3. Submit as-built drawings (two copies) indicating the installation details. Note all routing of piping, electrical conduit, and accessories.

      4. Submit equipment installation and maintenance manuals in addition to the as-built drawings.

Use the following paragraph only if Commissioning Section 019100 is included in the project manual.

      1. For systems, equipment, and components specified herein, submit commissioning plans and schedules; checkout, startup, operational, functional, and final acceptance test plans, procedures, checklists, and reports; systems manuals; and operation and maintenance training plans.

      2. Submit warranty.


      1. All Inergen system components furnished under this contract shall be guaranteed against defect in design, material, and workmanship for the full warranty period that is standard with the manufacturer and/or supplier but not less than one year from the date of substantial completion. In addition, the Contractor shall guarantee the system against false actuation or leakage due to faulty equipment, design, or workmanship for a period of one year from substantial completion. In the event of Inergen agent leakage or system discharge from any of the above conditions, the Contractor shall completely recharge and recondition the system at no additional cost to the Port.



      1. All equipment, materials, and components specified herein shall be supplied by a single manufacturer. Ansul Fire Protection or pre-bid approved equal.

      2. The extinguishing agent shall be Inergen, a trademark name registered to Ansul Fire Protection.


      1. Wiring:

        1. All electrical enclosures, raceways, and conduits shall be employed in accordance with applicable codes and intended use, shall contain only those electrical circuits associated with the fire detection and control system, and shall not contain any circuit that is unrelated to the system.

        2. Unless specifically provided otherwise in each case, conductors shall be enclosed in steel conduit, rigid, or thin wall as conditions dictate.

        3. Conduit or raceways exposed to weather or other similar conditions shall be properly sealed and installed to prevent damage. Employ provisions for draining and/or drying.

        4. NEMA rating and/or electrically hazardous classifications shall be observed and equipment or materials installed shall meet or exceed the service requirements.

        5. Wiring shall be of the proper size to conduct the circuit current but shall not be smaller than No. 18 AWG unless otherwise specified for a given purpose. Wire that has scrapes, nicks, gouges or crushed insulation shall not be used. The use of aluminum wire is strictly prohibited.

        6. Splicing of circuits shall be kept to a minimum and shall only be found in an electrical device suited for the purpose.

        7. Wire spliced together shall have the same color insulation.

        8. Wire splices shall be made with appropriate devices suited for the purpose.

        9. Wire terminations shall be made with crimp terminals unless the device at the termination is designed for bare wire terminations.

        10. Electrical circuits shall be numerically tagged with suitable devices at the terminating point and/or splice. All circuit numbers shall correspond with the installation drawings.

        11. The use of colored wires is encouraged but not required unless dictated by state or local authorities.

        12. Use white colored wire exclusively for the identification of the neutral conductor of an alternating current circuit.

        13. Use green colored wire exclusively for the identification of the earth ground conductor of an AC or DC circuit.

      2. Control Panel - Autopulse IQ-301 Control System:

        1. The Inergen control panel (ICP) shall be an Autopulse IQ-301 and shall contain a microprocessor based central processing unit (CPU). The CPU shall communicate with and control the following types of equipment used to make up the system: Intelligent detectors, addressable modules, and other system controlled devices.

        2. System Capacity and General Operation:

          1. The ICP shall be capable of expansion to 198 intelligent/addressable devices.

          2. The system shall include Form-C alarm and trouble relays rated at a minimum of 2.0 amps at 30 VDC. It shall also include four Class B (NFPA Style Y) programmable notification appliance circuits.

          3. The system shall support up to 99 programmable EIA-485 driven relays for an overall system capacity of 301 circuits.

          4. The ICP shall include a full featured operator interface control and annunciation panel that includes a backlit liquid crystal display, individual, color coded system status LEDs, and an alphanumeric keypad for the field programming and control of the fire alarm system.

          5. Programming or editing of the existing program in the system shall be achieved without special equipment and without interrupting the alarm monitoring functions of the ICP.

          6. The ICP shall provide the following features:

            1. Drift compensation to extend detector accuracy over life.

            2. Sensitivity test meeting requirements of NFPA 72.

            3. Maintenance alert to warn of excessive smoke detector dirt or dust accumulation.

            4. System status reports to display or print.

            5. Alarm verification with verification counters.

            6. PAS presignal, meeting NFPA 72 requirements.

            7. Rapid manual station reporting (under 2 seconds).

            8. Non-alarm points for general (non-fire) control.

            9. Periodic detector test conducted automatically by software.

            10. Pre-alarm for advanced fire warning.

            11. Cross zoning with the capability of counting two detectors in alarm, two software zones in alarm, or one smoke detector and one thermal detector in alarm.

            12. March time and temporal coding options.

            13. Walk test with check for two detectors set to same address.

            14. UL 1076 security monitor points.

            15. Control-by-time for non-fire operations, with holiday schedules.

            16. Day/night automatic adjustment of detector sensitivity.

            17. Device blink control for sleeping areas.

        3. Batteries:

          1. Be 12 volt, gell-cell type (two required).

          2. Have sufficient capacity to power the fire alarm system for not less than 24 hours in standby plus 5 minutes of alarm upon a normal AC power failure.

          3. Be maintenance free. No liquids shall be required. Fluid level checks, refilling, spills, and leakage will not be accepted.

      3. Manual Release Station:

        1. Double action manual releasing stations shall be addressable using MMX-101 monitor module. (Ansul Part No. 78101/417478).

        2. Stations shall be suitable for surface mounting or semi-flush mounting as shown on the drawings, and shall be installed not less than 42 inches, and not more than 48 inches above the finished floor.

      4. Abort Station:

        1. Abort station shall be addressable using MMX-101 monitor module. (Ansul Part No. 76494/417478).

        2. Stations shall be suitable for surface mounting or semi-flush mounting as shown on the drawings, and shall be installed not less than 42 inches, and not more than 48 inches above the finished floor.

      5. First Alarm Bell:

        1. Alarm bell shall be UL listed or FM approved and operate on 24 VDC nominal. (Ansul Part No. 417805).

        2. Place the appliance 80 inches above the highest floor level within the space, or 6 inches below the ceiling, whichever is lower.

      6. Audible/Visual Pre-Discharge Device:

        1. Audible/visual device shall be UL listed or FM approved and operate on 24 VDC nominal. (Ansul Part No. 415450).

        2. Place the appliance 80 inches above the highest floor level within the space, or 6 inches below the ceiling, whichever is lower.

      7. Discharge Strobe Devices:

        1. Discharge strobe shall be UL listed or FM approved and operate on 24 VDC nominal. (Ansul Part No. 415453).

        2. Place the appliance 80 inches above the highest floor level within the space, or 6 inches below the ceiling, whichever is lower.

      8. Analog Addressable Photoelectric Smoke Detector: The detectors shall use the photoelectric (light-scattering) principle to measure smoke density and shall, on command from the control panel, send data to the panel representing the analog level of smoke density. (Ansul Part No. 417482/417486).

      9. Analog Addressable Ionization Smoke Detector: The detectors shall use the dual-chamber ionization principle to measure products of combustion and shall, on command from the control panel, send data to the panel representing the analog level of products of combustion. (Ansul Part No. 417481/417486).

      10. Isolator Module: Provide isolator modules to automatically isolate wire-to-wire short circuits on an SLC loop. The isolator module shall limit the number of modules or detectors that may be rendered inoperative by a short circuit fault on the SLC Loop. Provide at least one isolator module for each protected zone of the building. (Ansul Part No. 417480).


      1. Pipe Material - Inergen System:

        1. System piping shall be of non-combustible materials having physical and chemical characteristics so that integrity under stress can be predicted with reliability.

        2. At a minimum, piping materials shall be black steel pipe of a schedule and type to withstand maximum downstream piping pressure in accordance with the manufacturer’s instructions.

        3. Under no conditions shall ordinary cast iron pipe or steel pipe in accordance with ASTM A120 or ASTM A53/A120 be used.

        4. Piping joints shall be suitable for the design conditions and shall be selected with consideration of joint tightness and mechanical strength.

        5. At a minimum, fittings beyond the orifice union/nipple shall be black, 300-pound class fittings in accordance with ANSI B16.3. Do not use ordinary cast iron fittings. Distribution piping downstream of the orifice union/nipple shall be a minimum of Schedule 40.

        6. The system manifold up to the orifice union/nipple shall be constructed of Schedule 80/160 piping and 2000-pound or 3000-pound forged steel fittings.

        7. All piping shall comply with NFPA 2001.

        8. Install piping in accordance with good commercial practice to the appropriate codes, securely supported with UL listed hangers, and arranged with close attention to the design layout since deviations may alter the design flow performance as calculated.

        9. Piping shall be bracketed within 12 inches of all discharge nozzles.

        10. All piping shall be reamed, blown clear, and swabbed with appropriate solvent to remove mill varnish and cutting oils before assembly.

        11. Multi-outlet fittings, other than tees, shall not be permitted.

        12. Assembly of all joints shall conform to the appropriate standards. Threaded pipe joints shall utilize Teflon tape applied to the male threads only.

      2. Inergen Storage Cylinders:

        1. Cylinder assemblies shall be of steel construction with a standard red epoxy paint finish. Equip each cylinder with a pressure seat-type valve and gauge. The system shall utilize Ansul’s CV-98 valve assemblies. Construct each valve with forged brass and shall attach to the cylinder providing a leak tight seal. Each valve shall also include a safety pressure relief device that provides relief at 3000-3360 PSI in accordance with CGA test methods.

        2. Filling of the cylinder assembly shall be by Ansul Fire Protection or an authorized Inergen systems distributor in conjunction with a factory authorized Inergen agent filling station. Initial filling and recharge shall be performed in accordance with the manufacturer’s established procedures and shall not require replacement components for normal service.

      3. Cylinder Bracket:

        1. Furnish each cylinder assembly with a bracket made from welded steel. The bracket shall hold the cylinders in a saddle with a front bracket piece that secures the cylinders. The brackets shall be modular in design to allow added bracketing or stacking of cylinders depending on installation requirements.

        2. Cylinder brackets shall be UL listed and/or FM approved for use with the Inergen system.

      4. CV-98/Selector Valve Actuators:

        1. Actuators shall be of brass construction and stackable design with swivel connections to allow removal of actuators for maintenance or testing.

        2. Actuation devices shall be UL listed and/or FM approved for use with the Inergen system. (Ansul Part No. 423684).

      5. Discharge Hose/Check Valve:

        1. When manifolding, all cylinder assemblies shall include a flexible discharge hose and check valve for connection to the manifold inlet.

        2. All hose/check valves shall be UL listed and/or FM approved for use with the CV-98 Inergen valve as manufactured by Ansul Fire Protection. (Ansul Part No. 842424).

      6. Discharge Nozzles:

        1. Discharge nozzles shall be of two-piece construction and sized to provide flow rates in accordance with system design flow calculations.

        2. A nozzle inlet orifice plate shall be included. Determine the orifice size using a computerized UL listed flow calculation program.

        3. Orifice(s) shall be machined in the nozzle body to provide a horizontal discharge pattern based upon the approved coverage arrangements.

        4. Permanently mark nozzles with the manufacturer’s part number. The nozzles shall be threaded directly to the discharge piping without the use of special adapters.

        5. Nozzles shall be UL listed as manufactured by Ansul Fire Protection.

      7. Orifice Union/Nipple Assemblies:

        1. Include an orifice union/nipple in the manifold to reduce pressure in the downstream pipe network.

        2. Be rated at 2000-pound class minimum.

        3. Be permanently marked with the manufacturer’s orifice code. The orifice union/nipple shall be threaded directly to the manifold piping without the use of special adapters.

        4. Be UL listed and/or FM approved for use with the Inergen system.



      1. The system shall be installed by an authorized Ansul distributor certified for the design, installation, and service of Inergen suppression systems.


      1. Inergen Suppression System:

        1. Inergen fire suppression system shall be of the engineered, permanently piped, fixed nozzle type.

        2. All agent storage cylinders shall be centrally located as vertical, free-standing cylinders with wall and/or floor-mounted retaining brackets. Where multiple cylinders are required for the same hazard, a common manifold shall be employed. Cylinders mounted horizontally shall be installed in accordance with the manufacturer’s design manual. Brace cylinders to resist seismic forces as specified in the IBC for the ground motion accelerations corresponding to the project location.

        3. On multiple cylinder arrangements (discharging into a common hazard), one cylinder shall be designated as the pilot cylinder and employ the restorable electric actuator, and mechanical manual actuator, or both. All remaining cylinders shall be pneumatically operated from the Inergen agent.

        4. Manifolded cylinders shall employ a flexible discharge hose to facilitate installation and system maintenance. Each cylinder on a manifold shall also include an agent check valve installed to the manifold inlet.

      2. Flow Calculations:

        1. Submit computerized verification of flow calculations for each Inergen fire suppression system and include the following data as a minimum:

          1. Quantity of agent per nozzle.

          2. Orifice union/nipple and nozzle orifice diameters.

          3. Pressure at nozzle (psi).

          4. Nozzle body nominal pipe size (inch).

          5. Number and size of cylinders.

          6. Total agent.

          7. Pipe size per pipe section.

          8. Pipe schedule per pipe section.

          9. Number, size, and type of fitting per pipe section.

          10. Actual length per pipe section (feet).

          11. Equivalent length per pipe section (feet).

          12. Discharge time (seconds).

          13. Maximum downstream piping pressure (psi).


      1. Prior to substantial completion, provide operational training in all concepts of the system to the Port. Training shall consist of:

        1. Control system operation.

        2. Trouble procedures.

        3. Abort procedures.

        4. Emergency procedures.

        5. Safety requirements.

        6. Demonstration of the system (excluding Inergen release).


      1. Commission systems, equipment, and components specified herein.

        1. Provide inspection of the completed installation by factory authorized and trained personnel. The inspection shall include a full operational test of all components in accordance with the equipment manufacturer’s recommendations.

        2. Perform inspections in the presence of the Port, insuring authority, and/or the local authority having jurisdiction.

        3. Test mechanical and electrical components according to the manufacturer’s recommended procedure to verify system integrity.

        4. Inspection shall include a complete checkout of the detection/control system and certification of cylinder pressure. File a written report with the Port.

        5. The quantity of agent shall reflect the actual design quantity of Inergen agent.

        6. Complete a functional test consisting of detection, release, alarm, accessories related to the system, control unit and a review of the cylinders, piping, fittings, hangers, and cylinder pressure.





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