ENGINEERING SPECIFICATIONS FOR CO2 EXTINGUISHING AGENT PRE-ENGINEERED FIRE SUPPRESSION SYSTEMS

Transcription

1 ENGINEERING SPECIFICATIONS FOR CO2 EXTINGUISHING AGENT PRE-ENGINEERED FIRE SUPPRESSION SYSTEMS SECTION 1 GENERAL SPECIFICATIONS I. SCOPE This specification outlines the requirements for a pre-engineered fire suppression system using CO 2 as extinguishing agents and where the flexible pneumatic, thermally sensitive tubing is used as a detection device. The thermally sensitive tubing shall be installed as linear detection capability before the suppression takes place by the nozzles. The pre-engineered fire suppression system shall be used to protect enclosed hazard such as electrical board, cabinets and compartment (enclosed) containing electrical or electronic components. II. APPLICABLE STANDARDS AND PUBLICATIONS The FireDETEC pre-engineered system shall be designed, installed, tested and maintained in accordance with applicable requirements set forth in the latest edition of the Local Authorities Having Jurisdiction. Mass of agent calculation method must follow the codes and standards stated below: A. VdS CO2 Fire Extinguishing Systems, Planning and Installation B. CEA CO2 Systems - Planning and Installation C. APSAD R13 Installation of Automatic Gaseous Extinguishing Systems The standards listed, as well as other applicable codes, standards, and good engineering practices shall be used as minimum calculation standards. I. 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.

2 II. 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). III. 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. 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 CO2, 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 60 seconds.

3 4. The installing contractor shall have access to a CO2 recharging station. The installing contractor shall provide proof of this ability to recharge the largest CO2 system within 24 hours. 5. The installing contractor shall be an authorized stocking distributor of the CO2 system equipment so that immediate replacement parts are available from inventory. SECTION 2 TECHNICAL REQUIREMENTS I. SYSTEM DESCRIPTION AND OPERATION A. The FireDETEC indirect high pressure (IHP) pre-engineered 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. B. The system shall provide a minimum agent design concentration, as defined by VdS Directive 2093, in all areas and/or protected spaces. The system should be designed to discharge its contents in 60 seconds or less. Final concentration inside the room shall not exceed 5% for normally occupied spaces. Concentration may vary depending on the Authorities Having Jurisdiction (AHJ) but may never be less than the one defined by VdS Directive C. The system shall be complete according to the design manual. It shall include all system components, all detection equipment, agent storage cylinders, discharge nozzles, pipe and fittings, manual release, audible and visual alarm devices, caution/advisory signs, functional checkout and testing, training and all other operations necessary for a functional Fire Suppression System for use with CO2. 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 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:

4 - 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 E. The Installation and Maintenance Manual FireDETEC Pre-Engineered CO2 System Kit for Electrical Cabinets, 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. 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. The extinguishing system unit shall be designed to operate between -4 F (-20 C) and 130 F (55 C). B. CO2 STORAGE 1. Each system shall have its own cylinder of CO2. 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 fire suppression system shall suitable for applications where the cylinder ambient storage temperature is between -4 F (-20 C) and 130 F (55 C). 5. The FireDETEC indirect pre-engineered extinguishing system is available in six capacities, each having its own article number. Details are provided in the table below. System Model Number Digital Measuring System Max. Fill, Kg Discharge Valve Part Number Discharge Valve Outlet, In. B No 2 B ,7x1/14 SI B No 5 B ,7x1/14 SI B No 10 B ,7x1/14 SI

5 B No 10 B ,7x1/14 SI B No 20 B ,7x1/14 SI B No 30 B ,7x1/14 SI B No 50 B ,7x1/14 SI B Yes 2 B ,7x1/14 SI B Yes 5 B ,7x1/14 SI B Yes 10 B ,7x1/14 SI B Yes 10 B ,7x1/14 SI B Yes 20 B ,7x1/14 SI B Yes 30 B ,7x1/14 SI B Yes 50 B ,7x1/14 SI 6. CO2 cylinders shall be π marked, in accordance with Directive EN 2010/35/EU: Transportable Pressure Equipment Directive (TPED) 2010 and ADR/RID: A complete traceability system shall be set up and the following documents shall be accessible for all cylinder batch series: - Certificate of conformity of manufacture according to Directive. 2010/35/EU and ADR/RID Thermal control report from the cylinder supplier including information on the heat treatment, compliance with heat parameters and results of the material tests. - Material test report including results of the material tests, impact tests, bend tests and bursting tests. - Ultrasonic test results. - Hydraulic test report. C. VALVE 1. The valve shall be made of 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 for protection against over pressure. 2. Each discharge and filling port shall be fitted with hexagonal safety nuts for safety purposes during transportation and intended to prevent uncontrolled discharge of a cylinder in the event of accidental system activation. 3. All valves shall be delivered with a safety clip preventing from unauthorized manipulation of the ball valve when sealed.

6 4. A contact reed device shall be mounted on each safety clip of ball valves when the system is armed. It shall generate an electric signal in case of unauthorized manipulation of the sealed ball valve. 5. All FireDETEC valves shall be π marked, in accordance with Directive EN 2010/35/EU: Transportable Pressure Equipment Directive (TPED) All valves shall be tested against leakage prior to be validated for sales. The maximum leak rate authorized shall be 5x10-6 mbar.l/s. 7. A complete traceability system shall be set up and an inspection certificate 3.1 according to EN 10204:2004 shall be available on demand for all valve bodies and give the following information: - Chemical Analysis - Tensile strength test results - Adjustement of regulator verification - External leak tightness test results - Internal leak tightness test results - Dimensional and visual inspection, Cleanliness, Identification and marking control 8. The valve must present a digital measurement port, in order to get a signal continually indicating the CO2 quantity inside the cylinder (for monitoring and maintenance). The valve shall be able to generate an alarm signal when the quantity of CO2 goes above a defined level, chosen by the end user. D. MOUNTING BRACKETS 1. The cylinder wall mounting brackets shall be in powder coated steel and must be used to mount the cylinder in vertical position. 2. Cylinders and brackets shall be arranged to allow cylinder removal. E. BURST DISC 1. Burst disc shall be provided to protect the cylinders against overpressure. 2. A traceability system shall be set up for all burst discs, and linked to valves where they re mounted on. F. PRESSURE GAUGE

7 1. Each system shall have a pressure gauge on its detection line to indicate internal sensor tubing pressure. The pressure gauge shall be 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 sensor tubing pressure, where the system requires digital monitoring. The low pressure switch shall be wired to an alarm device to provide an audible and visual supervisory condition signal in the event the sensor tubing pressure drops below 8 bar (+/- 0,3 bar) 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 Actuator shall be used where the system shall be manually activated and without external power require. 3. EOL Manual Actuator shall use piston technology. No diaphragm technology (or technologies requiring replacement of components after actuation) shall be used. 4. EOL Manual Actuator shall be provided with a seal or other device to minimize the potential for accidental discharge. 5. 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. 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 - Temperature range - 30 C C - Permeability: min mbar. l/s (100% Helium testing) 2. The sensor tubing shall be made of multiple layers for enhanced resistance to UV and chemicals. 3. The week and year of production shall be marked on the sensor tubing. 4. The sensor tubing should be CE compliant, according to construction products directive

8 5. The compatibility between most widespread chemicals and sensor tubing shall have been tested and results shall be accessible to end-users. 6. All devices and equipment shall be tested and validated by UL and FM during the certification process of complete systems. The following tests shall have been processed and validated: - One year leakage test, in accordance with FM Approvals - Air-Oven Aging Test, in accordance with FM Approvals and UL Day Extreme Temperature Leakage Test, in accordance with FM Approvals - Corrosion Salt Spray, in accordance with ASTM B117, Standard for Salt Spray Testing. 7. The Linear Thermal Detector shall be validated and considered as a mean of detection by UL. I. DISCHARGE NOZZLE 1. The discharge nozzle used to control the flow of and distribute the agent into the hazard area shall be stainless steel construction. J. PIPING REQUIREMENT 1. Piping must be stainless steel pipe. 2. Distribution piping and fittings shall be installed in accordance with the manufacturer s requirements 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. DISCHARGE PIPE FITTINGS 1. Pipe fittings shall be compression tube fittings only made of stainless steel 316L, according to ASTM A276 and ASTM A182. They shall have a minimum working pressure of 4350 psi (300 bar). Temperature ratings of the fittings must not be exceeded.

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 CO2 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 CO2 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. CONTAINERS 1. Installer must check to ensure all cylinders and brackets are securely fastened. 2. Installer must check inside pressure of all containers. It can be measured directly through the digital measurement port of the valve. 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 Prior to final acceptance, the installing contractor shall provide operational training to each shift of the owner s personnel. Each training session shall include 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)

11 C. Material covered and training aids available III. MAINTENANCE The maintenance procedures and intervals are indicated in the The Installation and Maintenance Manual FireDETEC Pre-Engineered CO2 System Kit for Electrical Cabinets, and are meant to represent the minimum requirements for FireDETEC CO2 systems. These procedures do not preclude those required by 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 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 The Installation and Maintenance Manual FireDETEC Pre-Engineered CO2 System Kit for Electrical Cabinets, 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. 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.