Clean Agent Extinguishing for buildings to be protected by Clean Agent extinguishing systems. This system will be U.L. listed or approved by a recognized laboratory using Clean Agent.
Clean Agent Extinguishing Systems Specification / Requirement
Scope of Supply
The SELLER shall provide everything necessary to design, supply, install and test a complete Clean Agent fire suppression system and supervised automatic fire detection and alarm system in accordance with all applicable NFPA requirements. All equipment, valves and other devices shall be U.L. listed and/or FM approved for use in Clean Agent systems. The control panel, detection system and the agent releasing system shall be part of the FGCP. All work performed shall be in accordance with NFPA Standards 70, 72, 2001, and the attached specifications.
System Description:
a. The Clean Agent fire suppression system shall be engineered, and designed for total flooding for the areas outlined on the fire protection drawings.
b. The piping network must be of a balanced, engineered type per NFPA-2001, and manufacturer’s guidelines.
c. The amount of Clean Agent to be provided shall be the amount required to obtain a uniform 7% design concentration for a minimum of 10 minutes in the protected area.
d. Consideration must be given to such factors as: unenclosable openings, if any; run-down time of fans, time required for dampers, doors or windows to close; cracks around doors, windows and walls.
e. The system shall be activated by a choice of any two (2) smoke detectors in alarm.
Activation of the first smoke detector shall:
(i) Energize pre-discharge horn(s) in the protected area.
(ii) Illuminate the “Alarm” LED on the control panel.
(iii) Illuminate an LED on the activated detector.
(iv) Annunciate an alarm condition to the FGCP.
f. Activation of a second smoke detector shall:
(i) Continue to operate alarm devices
(ii) Sound evacuation horn(s).
(iii) Shut down all air conditioning and ventilation systems and close all dampers to affected area (via HVAC control panel).
(iv) Shut down non-emergency electrical power to affected areas such as the Control Buildings, (via Plant Safety PLC).
(v) Activate an adjustable time delay that will delay the release of agent as required for up to thirty (30) seconds. The agent shall be released at the end of this time period unless a manual release station is pulled. If a manual release station is pulled the agent shall be released immediately by-passing any remaining time delay.
(vi) Discharge of the system may be delayed by the activation of a dead-man type abort station, resulting in an audio and visual trouble alarm indication. Release of the abort station after both detection circuits have activated, results in a ten (10) second discharge delay period. Any time during the delay that the panel is reset with no reoccurring alarms will result in termination of the release sequence of the clean agent system.
System Components
The fire suppression system shall be manufactured by well recognized professional firm specialized in this field and shall include a Main/Reserve system.
Agent
The fire suppression agent shall be FM-200 manufactured by Great Lakes Chemical Corporation, or approved equal. The agent supply shall be located inside as indicated on the fire protection drawings.
Agent Storage
a. The CLEAN AGENT shall be stored in U.L. listed alloy steel containers.
b. Each container shall be equipped with suitable lifting attachments, discharge valve, safety relief device, and an anti recoil device for shipping and handling.
c. The discharge valve shall utilize a fast-acting scored rupture disc for the fastest and least restrictive means of operation.
d. A 24VDC, electric operated control head with local manual lever operation shall be required for automatic operation of the system.
e. Cylinders that utilize mechanically and/or solenoid-operated valves are not acceptable.
f. Each container with a storage capacity of 90 kilograms (200 pounds) or greater shall be equipped with a liquid level device to determine the amount of agent in the container without the need for removal.
g. Each container shall be secured in place mounted against the wall.
Discharge Piping
a. All distribution piping and fittings shall be in accordance with the manufactures guidelines and shall be per the latest requirements listed in NFPA 2001.
b. All piping and fittings shall be galvanized.
c. All reductions in pipe size must be made using concentric reducing fittings. Reducing bushings are not acceptable.
d. The piping system shall be securely supported in accordance with NFPA 2001.
e. For ceiling levels over 3.7 m (12’-0″) in height a second row of nozzles shall be installed and a third level if over 7.3 m (24’-0″) high (manufacturer height limitation vary).
Control Panel
The control panel shall be an integrated portion of the FGCP. Reference Fire and Gas Detection Standard F-01-G-01 for additional information.
Miscellaneous Requirements
a. The fire alarm and detection equipment shall be U.L. listed or FM approved.
b. The audio/visual devices shall consist of 150-mm (6″) diameter, 24VDC pre-discharge alarm bells, and 24VDC evacuation horn/strobes labeled “FIRE”.
c. The placement of all devices shall be as shown on the fire detection drawing(s).
d. Manual discharge stations shall be supplied as shown on the drawing(s).
e. Instructional signs shall be provided at all points of egress, manual discharge stations, and audio/visual devices.
f. All wires shall be identified at every termination point in accordance with NFPA 70, Article 760.
g. All low voltage control wiring shall be 18-gauge solid copper as a minimum for detection circuits and 14 gauge for audio and solenoid valves.
h. All fire alarm circuits from electrical devices shall be run in conduit back to the panel where the return wiring must be landed on separate terminals as required. Wiring runs shall be continuous, point to point, with no splicing between terminals.
i. All major equipment and devices shall be tagged and labeled in accordance with the Project procedure.
j. The fire protection installer shall include fees for engineering, installation, materials, functional electrical testing, and an educational seminar for the BUYER.
Final Acceptance Test
a. The test shall demonstrate that the entire control system functions as intended. All circuits shall be tested. In addition, the supervision of each circuit shall be tested.
b. A room pressurization fan test shall be performed in accordance with NFPA 2001. In the event the Clean Agent system design fails the door fan test, and the room is found to be reasonably tight, the SELLER shall revise the Clean Agent design until the door fan test is passed.