ENGINEERING SPECIFICATIONS FOR FM-200 CLEAN AGENT INDIRECT PRE-ENGINEERED FIRE SUPPRESSION SYSTEMS

Transcription

1 ENGINEERING SPECIFICATIONS FOR FM-200 CLEAN AGENT INDIRECT PRE-ENGINEERED FIRE SUPPRESSION SYSTEMS SECTION 1 GENERAL SPECIFICATIONS I. SCOPE This specification outlines the requirements for a pre-engineered fire suppression system using branded agent FM200 manufactured by Dupont and can be operated with a flexible pneumatic, thermally sensitive tubing used as a detection device, or with a manual release device. The thermally sensitive tubing is designed to burst at approximately 110 C, releasing suddenly the pressure inside the tubing. The sudden release of pressure activates the indirect low pressure (ILP) valve and floods the protected area with extinguishing agent. The preengineered fire suppression system shall be used to protect enclosed hazard such as electrical cabinets, CNC machines and other enclosed compartment containing electrical or mechanical components. II. APPLICABLE STANDARDS AND PUBLICATIONS The FireDETEC pre-engineered system shall be designed, installed, inspected, maintained, tested and recharged only by fire protection personnel qualified and trained by CEODEUX Extinguisher Valves Technology S.A. in accordance with existing regulations, rules and guidelines including requirements of the Governmental and/or Local authority and other regulatory authorities, in accordance with applicable requirements set forth in the latest edition of the following codes and standards: A. NFPA 2001 Clean Agent Fire Extinguishing Systems B. FM Factory Mutual Approval Guide C. UL Fire Protection Equipment Directory

2 D. Department of Transportation (DOT) Title 49 Code of Federal Regulations E. Local Authorities Having Jurisdiction (AHJ) The standards listed, as well as all other applicable codes, standards, and good engineering practices shall be used as minimum design standards. III. REQUIREMENTS The suppression system installation shall be made in accordance with the drawings, specifications and applicable standards. Should a conflict occur between the drawing and specifications, the specifications shall prevail. IV. EXCLUSIONS The work listed below shall be provided by others, or under other sections of this specification: A. 120 VAC or 220 VAC power supply to the system control panel. B. Interlock wiring and conduit for shutdown of Heating, Ventilation and Air-Conditioning (HVAC), dampers and/or electric power supplies, relays or shunt trip breakers. C. Connection to local/remote fire alarm systems or listed central alarm station(s). V. QUALITY ASSURANCE A. MANUFACTURER 1. The valves, cylinders, detection tubing, ends of line, discharge tubing, fittings and nozzles shall be supplied by CEODEUX-EXTINGUISHER VALVES TECHNOLOGY S.A. or one of its direct representatives. 2. The name of the brand FireDETEC or the Rotarex three-star logo shall appear on all major components. 3. All devices, components and equipment shall be approved by the CEODEUX- EXTINGUISHER VALVES TECHNOLOGY S.A. 4. All devices, components and equipment shall be new, standard products of the manufacturer s latest design and suitable to perform the functions intended.

3 5. All devices and equipment shall be validated by UL and FM during the certification process of complete systems. B. INSTALLER 1. The installing contractor shall be trained by the supplier to design, install, test and maintain fire suppression systems and be in possession of the corresponding training certificate (valid 3 years). 2. The installing contractor shall be an experienced firm regularly engaged in the installation of automatic Clean Agent, or similar, fire suppression systems in strict accordance with all applicable codes and standards. 3. The contractor shall specifically prepare plans according to the common standards and easily reproducible. These plans will show the quantity, location, and marking of all system components. Included shall be a description and routing of all piping / tubing. Care should be taken to locate all agent storage containers as close to the protected area as possible to ensure complete liquid discharge of the suppression agent within 10 seconds. 4. The installing contractor shall have access to a Clean Agent recharging station. The installing contractor shall provide proof of this ability to recharge the largest Clean Agent system within 24 hours. This section is to be adapted to the specific local conditions of each country. 5. The installing contractor shall be an authorized stocking distributor of the Clean Agent system equipment so that immediate replacement parts are available from inventory. This section is to be adapted to the specific local conditions of each country. SECTION 2 TECHNICAL REQUIREMENTS I. SYSTEM DESCRIPTION AND OPERATION A. The FireDETEC indirect pre-engineered clean agent extinguishing system is used for total flooding applications. Total flooding protection is applicable to enclosed special hazards such as rooms or space containing flammable liquid, electrical equipment, records, or other combustibles where the agent may be used for extinguishment. The hazard area must have no outside air flow present in order to successfully achieve the extinguishing concentration within the enclosure.

4 B. The system shall provide a minimum agent design concentration, as defined by NFPA 2001, in all areas and/or protected spaces, at the minimum anticipated temperature within the protected area. The system should be designed to discharge its contents in 10 seconds or less. Final concentration shall not exceed 9% for normally occupied spaces. Concentration may vary depending on the Authorities Having Jurisdiction (AHJ) but may never be less than the one defined by NFPA C. The system shall be complete according to the design manual. It shall include all mechanical, and electrical installation, all detection and control equipment, agent storage cylinders, branded FM200 agent, discharge nozzles, pipe and fittings, manual release and abort stations, audible and visual alarm devices, auxiliary devices and controls, shutdowns, alarm interface, caution/advisory signs, functional checkout and testing, training and all other operations necessary for a functional, UL Listed and/or FM Approved Clean Agent Suppression System for use with branded FM200 agent. D. The FireDETEC systems are indirect automatic type systems which utilize flexible, pneumatic, thermally sensitive tubing to activate the system. This tubing is connected to the top of the discharge valve assembly and is pressurized with nitrogen along with the cylinder contents. When the pressure in this tubing is vented, the valve piston moves up, the valve opens and the extinguishing agent is discharged through a separate piping network. There are three ways of venting the pressure in the tubing in order to actuate the system: - Manual operation by use of end of line manual actuator - Electrical operation by use of end of line solenoid actuator - Automatic operation when a sufficient temperature is reached to burst the tubing Note: The thermally sensitive tubing is not considered as an acceptable mean of fire detection by FM and was not tested as such. An FM Approved system shall require the use of an FM Approved smoke/heat detector and control panel. Therefore, for an FM approved system the solenoid actuator must be installed on all units and wired to a control panel connected to FM approved sensors. The manual actuator must also be installed to provide an independent means of manual actuation, as per FM 5600 section Both actuators may be installed at the end of the tubing line by use of a tee connector. E. The Rotarex FireDETEC Indirect Low Pressure (ILP) Pre-Engineered Fire Suppression Systems Featuring Linear Pneumatic Tubing Design, Installation, and Maintenance Manual, p/n , describes the design, installation, usage, maintenance, and limitations for these systems. These systems are to be designed, installed, used, and maintained explicitly as described in the system manual identified above.

5 II. MATERIAL AND EQUIPMENT A. GENERAL REQUIREMENTS 1. The FireDETEC pre-engineered fire suppression system materials and equipment shall be standard products of the supplier s latest design and suitable to perform the functions intended. When one or more pieces of equipment must perform the same function(s), they shall be duplicates produced by one manufacturer. 2. All devices and equipment shall be validated by UL and FM during the certification process of complete systems. 3. The fire suppression agent shall be branded FM200 agent manufactured by Dupont. The agent shall be suitable for use in normally occupied spaces. Agent shall be listed as Acceptable on the US Environmental Protection Agency s Significant New Alternatives Policy (SNAP) list. 4. All exposed parts of an extinguishing system, including the finishes on coated or painted parts, the assemblies of moving parts, the nameplates as secured in place, the mounting bracket, or other similar parts, shall be resistant to commonly encountered atmospheric corrosive influences, and to galvanic corrosion as determined by the Salt Spray Corrosion Tests performed by UL and FM. 5. When the deterioration, breakage or other malfunction of a material for an extinguishing system unit presents a risk of causing the extinguishing system to become inoperable, the material shall not be susceptible to stress cracking, as determined by 10- Day Moist Ammonia Tests performed by UL and FM. 6. The extinguishing system unit shall be designed to operate between 32 F (0 C) and 130 F (54.4 C). B. CLEAN AGENT STORAGE 1. Each system has its own supply of clean agent. 2. Systems shall be designed in accordance with the manufacturer s guidelines. 3. Each supply shall be located out of the hazard area, as near as possible, to reduce the amount of pipe and fittings required to install the system. 4. The FireDETEC indirect pre-engineered clean agent extinguishing system is suitable for applications where the cylinder ambient storage temperature is between 32 F and 130 F (0 C to 54 C). 5. The extinguishing agent used in these systems is branded FM200, chemically identified as 1,1,1,2,3,3,3 Heptafluoropropane. This extinguishing agent currently holds

6 component FM Approval under multiple manufacturers and is listed in the Approval Guide as part of the Fire Protection Division under the heading Fixed Extinguishing Systems Clean Extinguishing Agents. The extinguishing agent is superpressurized with dry nitrogen to the nominal working pressure of 240 psi (16.5 bar) at 70 F (21 C) for use in this system. 6. The FireDETEC indirect pre-engineered extinguishing system is available in three capacities, each having its own article number. Details are provided in the table below. System Model Number Cylinder Part Number Max. Fill, lbs. (kg) Discharge Valve Part Number Discharge Valve Outlet, In. Maximum Protected Volume, Ft 3 (m 3 ) B (1.4) B ¼ NPT 92.2 (2.61) B (3.2) B ½ NPT (6.09) B (6.4) B ½ NPT (12.19) Note: Maximum protected volume is given for a completely enclosed area according to NFPA calculation guidelines. C. VALVE 1. The valve is nickel plated brass, equipped with a pressure gauge to monitor the system pressure, with a ball valve interfacing the tubing and the cylinder, and with a burst disc. 2. The valves are equipped with 2 discharge ports. Each discharge port shall be fitted with a safety plug for safety purposes during transportation and intended to prevent uncontrolled discharge of a cylinder in the event of accidental system activation. 3. All valves are delivered with a safety clip preventing from unauthorized manipulation of the ball valve when sealed. D. MOUNTING BRACKETS 1. The cylinder wall mounting brackets are epoxy powder coated and must be used to mount the cylinder in vertical position. 2. Cylinders and brackets shall be arranged to allow cylinder removal and cylinder weighing (maintenance procedure). E. BURST DISC Burst disc is provided to protect the cylinders against overpressure. F. PRESSURE GAUGE

7 1. Pressure gauge is provided and used to indicate internal cylinder pressure. The pressure gauge is color coded to display the acceptable operating range, under and over pressure range. 2. Each system shall have a pressure switch plugged on its detection line to provide electrical supervision of the cylinder pressure. The low pressure switch shall be wired to a control panel to provide an audible and visual supervisory condition signal in the event the cylinder pressure drops below 90% of working pressure. 3. Pressure switch shall be easily assembled and disassembled when the cylinder is pressurized. G. END OF LINE (EOL) 1. The End of Line (EOL) shall be required to pressurize the thermal activation tubing. 2. EOL Manual Release shall be used where the system shall be manually activated and without external power require. 3. EOL Solenoid Actuator (an electro mechanical device) shall be used where the system required relay signal to actuate electrically from control panel or other electric signal. 4. A manual means of operation shall be provided with a seal or other device to minimize the potential for accidental discharge. H. LINEAR THERMAL DETECTOR AND ACTUATION TUBING 1. Linear Thermal Detector and Actuation Tubing shall be designed to meet the following requirement: - Max. Working pressure 20 bar (at 20 C) - Internal diameter 4 mm - Outside diameter 6 mm - Min. Bending radius 100 mm - Temperature range - 30 C C - Life time 5 years (under normal conditions) 2. All devices and equipment shall be tested and validated by UL and FM during the certification process of complete systems. 3. The Linear Thermal Detector shall be validated and considered as a mean of detection by UL. This section is to be adapted depending on the type of tubing used. I. DISCHARGE NOZZLE

8 1. The discharge nozzle used to control the flow of and distribute the agent into the hazard area shall be brass construction, 360 dispersal patterns and is FM and UL approved. 2. The 3 lb. cylinders shall be used with a one nozzle setup, while the 7 lb. and 14 lb. cylinders can be used with two nozzles, balanced setups as well. These nozzles have a pre-determined design which was performance tested, as identified in the table below. Nozzle Part System Thread Size Orifice Quantity Orifice Diameter Number lb./1 nozzle 1/ lb./1 nozzle 3/ lb./2 nozzles 3/ lb./1 nozzle 1/ lb./2 nozzles 1/2" J. PIPING REQUIREMENT 1. Piping must be Schedule 40 steel pipe, either galvanized or black steel. Specifications ASTM A-53 or A-106, ANSI B36.10 must be used for steel pipe or tube. 2. Distribution piping and fittings shall be installed in accordance with the manufacturer s requirements, NFPA 2001 and approved piping standards and guidelines. All distribution piping shall be installed by qualified individuals using accepted practices and quality procedures. All piping shall be adequately supported and anchored at all directional changes and before nozzle locations. The piping shall be laid out to give maximum flow and to avoid possible mechanical, chemical or other damage. Installation shall follow drawings as closely as possible. System designer must be consulted for anything other than minor deviations in pipe routing. 3. The discharge line shall be connected to the ground to avoid the accumulation of static electricity during discharge. K. PIPE FITTINGS 1. Piping joints shall be Malleable Iron 300 pound class only - ASTMA-197 and have a minimum working pressure of 620 psi (42 bars). Temperature ratings of the fittings must not be exceeded. All threaded joints must be in accordance with ANSI B-20.1 Ductile Iron 300-pound class or higher ASTM A-395, or Steel ASTM-234 is acceptable. Piping, fittings, and pipe supports shall be in accordance with the latest edition of NFPA Also consult ANSI B 31.1, The Power Piping Code. The method of joining all pipe must be in accordance with the latest requirements listed in NFPA Acceptable fittings include screwed, flanges, welded.

9 III. SEQUENCE OF OPERATION The system shall be designed and installed such that it activated the discharge valve by any one of the following: A. MANUAL ACTUATION VIA MANUAL RELEASE VALVE The pre-engineered Fire suppression system can be manually activated by installing the manual release device at the end of the linear sensor tubing. The manual release device shall depressurize the linear sensor tube and open the valve to activate the Clean Agent discharge through the discharge nozzle installed within the protected area. Pressure switch is activated and opens (or closes) electric contacts to switch on/switch off electric devices. B. ELECTRIC ACTUATION VIA ELECTRIC RELEASE DEVICE The pre-engineered Fire suppression system can be electrically activated by installing the solenoid actuator at the end of the linear sensor tube. The electro-mechanical device allows actuation of the pre-engineered Fire suppression system from control panel or other electronic sensor. C. AUTOMATIC ACTUATION VIA TEMPERATURE SENSITIVE TUBING The system automatically operates when the thermal temperature sensitive tubing installed as linear detection capability bursts because of heating. Heat or direct flame impingement during a fire situation will cause the tubing to rupture. The tubing ruptures at the hottest point along its entire length, and then the Clean Agent (FM-200 ) is discharged through the piping network and nozzles to extinguish fire. Pressure switch is activated and opens (or closes) electric contacts to switch on/switch off electric devices. SECTION 3 DOCUMENTATION AND TESTING I. SYSTEM INSPECTION AND CHECKOUT Upon completion of installation, a meeting shall be held at the site with the contractor. Equipment supplier and owner personnel shall be present. The contractor shall familiarize owner s personnel with system components, system functions, and recommend procedures. The contractor will provide the owner with a complete operation and maintenance manual as well as written summary of any functional tests conducted.

10 The check-out procedures is intended to represent the minimum requirement for the extinguishing portion of the system. Additional procedures may be required by the applicable governmental or regulatory authorities. A. COMPARTMENT (HAZARD) AREA CHECK A good review of the hazard area shall be made. Certain aspects about the hazard may have changed, or been overlooked, which could affect overall system performance. B. AREA CONFIGURATION The hazard area dimensions shall be checked against those shown on the system plan(s). If the area volume or geometry has changed, the agent weight shall be recalculated and compared with the agent weight supplied. The area shall also be checked for bulkheads or movable partitions, which have been added or changed. If partitions have been added, installer shall check to see that all areas within the compartment still receive adequate agent distribution. C. AREA LEAKAGE The hazard area shall be checked for openings which could allow agent leakage after system discharge. Openings, such as cable, pipe and duct penetrations into the area shall be permanently sealed. Other sources of leakage shall be checked for and sealed. Doors entering and access panels in the hazard area shall be checked for tightness. Seals and door sweeps shall be installed to minimize leakage. Wall switch and receptacle boxes shall be sealed. All penetrations between walls and side panels must be sealed. D. CONTAINERS 1. Installer must check to ensure all cylinders and brackets are securely fastened. 2. Installer must check all pressure gauges. They shall display 240 PSIG at 70 F (16.6 bar at 21 C). 3. Installer must verify that cylinders of correct weight and pressure are installed in accordance with the design drawings. E. AUXILIARY FUNCTIONS Operation of auxiliary functions such as door closures, damper closures, air handling shutdown, etc. shall be verified when the pressure switch is activated. II. TRAINING REQUIREMENTS

11 Prior to final acceptance, the installing contractor shall provide operational training to each shift of the owner s personnel. Each training session shall include control panel operation, manual and (optional) abort functions, trouble procedures, supervisory procedures, auxiliary functions and emergency procedures. The following shall be included in the contractor s quotation: A. Duration of training B. Location of training (on site if feasible) C. Material covered and training aids available III. MAINTENANCE The maintenance procedures and intervals are indicated in the Design, Installation and maintenance manual for DuPont FM-200 Pre-engineered fire suppression systems, art. nb. PR-EN-xxxx, and are meant to represent the minimum requirements for FireDETEC FM-200 systems. These procedures do not preclude those required by NFPA 2001 and or the applicable governmental or regulatory authority. More frequent service intervals may be necessary if systems are installed in more severe service applications. A regular maintenance program must be established for the continuous operation of all FM- 200 fire suppression systems. A periodic maintenance program shall be established and followed. A maintenance log must be maintained for ready reference. The log must include the following accumulated data: A. Inspection Interval B. Inspection procedure performed C. Maintenance performed as a result of the inspection D. Name of inspector performing the task Any time rust or corrosion is found on a fire suppression cylinder it should be taken out of service and replaced. IV. INSTALLATION Installation procedures shall be performed in accordance with Design, Installation and maintenance manual for DuPont FM-200 Pre-engineered fire suppression systems, art. nb. PR-EN-xxxx, by fire protection personnel qualified and trained by CEODEUX Extinguisher Valves

12 Technology S.A. in accordance with existing regulations, rules and guidelines including requirements of the Governmental and/or Local authority and other regulatory authorities. V. WARRANTY System shall be warranted for parts and labour for not less than a period of one (1) year from date of installation. The contractor shall specify the maintenance to be performed during the warranty period to maintain warranty conditions. The standard life time for the tube must be (5) years under the normal operating condition and within the stated specification of the tubing.