HPCO2 Engineering Manual

Tomco2 Fire Systems 8/16/10 Rev. 0

High Pressure CO2 Engineering, Installation and

Operation Manual

7619 Hamilton Avenue Cincinnati, OH 45231

USA (513) 729-3473 phone

(513) 729-3444 fax

Tomco2 Fire Systems 8/16/10 Rev. 0

TABLE OF CONTENTS SECTION DESCRIPTION 1 INTRODUCTION 2 SYSTEM COMPONENTS 3 SYSTEM DESIGN 4 INSTALLATION 5 OPERATION AND SERVICE

Tomco2 Fire Systems Introduction 8/16/10 Rev. 0

SECTION 1

INTRODUCTION

Table of Contents Paragraph Subject 1-1 Purpose 1-2 Description 1-3 Properties of Carbon Dioxide 1-4 Quality of Carbon Dioxide 1-5 Safety


1-1

SECTION 1

INTRODUCTION

1-1 PURPOSE

The intent of this manual is to provide the user with the information necessary to adequately select, operate and maintain our high pressure CO2 fire suppression equipment required to protect a specific hazard.

1-2 DESCRIPTION A. A high pressure CO2 system is a specialized fire suppression system designed to

maintain the carbon dioxide supply at 70º F and 850 psig in strength alloy steel cylinders. The cylinders contain the CO2 required to protect the largest single hazard and any number of back-up discharges required by the authority having jurisdiction.

B. On large hazards where several cylinders are required, a manifold is used to connect

each cylinder by means of flexible hoses and check valves. C. Cylinder valves control the CO2 flow to the hazard through properly sized pipe,

terminating in nozzles that apply the CO2. Flow rate is controlled by nozzle orifices as well as pipe sizes. The cylinder master valves are electronically operated and the slave valves are back pressure actuated. The master valves can be automatically and/or manually operated.

D. Lock-Out Valves

A lock out shall be installed on all systems where carbon dioxide could migrate, creating a hazard to personnel. The valves shall be supervised for both automatic and manual systems unless specifically waived by the authority having jurisdiction. Systems shall be locked out when persons not familiar with the systems and their operation or when persons are present in locations where discharge of the system will endanger them before they can proceed to a safe location within the time delay period.

E. The equipment is UL listed for an ambient temperature range of 0°F to 130°F (-18°C to

54°C) of the protected area. Any approved releasing control panel can provide automatic actuation. Electric release stations provide manual release. The control panel operates the alarm devices, provides shut-down of auxiliary equipment, and supervises all circuits. The control panel also provides delays so alarms (audible and visual) in the protected area can evacuate personnel before the CO2 discharges.

F. Pneumatic Time Delays

A pneumatic pre-discharge alarm and pneumatic time delay shall be provided for all total flooding systems protecting normally occupied and occupiable enclosures where the discharge will expose personnel to hazardous concentrations of carbon dioxide. (NFPA 12, Paragraph 4.5.6, 2005 Edition) The pneumatic pre-discharge alarms and pneumatic time delays are required on all new installations and it is mandated that all existing systems be upgraded no later than December 31, 2008.


1-2

1-3 PROPERTIES OF CARBON DIOXIDE A. Under normal atmospheric temperature and pressures, carbon dioxide exists as a

colorless, odorless gas which is about 1.5 times heavier than air. Carbon dioxide will not burn or support combustion and will not sustain life.

B. When confined within a suitable pressure vessel and depending on temperature and

pressure conditions, carbon dioxide can exist in any of three stages of matter; solid, liquid and gas. The point at which all three states may exist is -69.9º F and 60.4 psig. This is called the triple point. At temperatures and pressures lower than -69.9º F and 60.4 psig, carbon dioxide may be either a solid or gas, again depending on conditions. Solid carbon dioxide (dry ice) at a temperature of -119.4º F and atmospheric pressure, sublimes (transforms directly from a solid to a gas without the formation of liquid).

C. The critical point of carbon dioxide is 87.8º F and 1057.4 psig. At temperatures and

pressures greater than 87.8º F and 1057.4 psig, carbon dioxide liquid cannot exist. D. At temperatures and pressures above -69.9º F and 60.4 psig, and below 87.8º F and

1057.4 psig, carbon dioxide liquid with overlying vapor may exist in equilibrium within a closed vessel. Within this range, there is a definite relationship between temperature, pressure and density.

E. The term “high pressure” is used to describe storage of carbon dioxide at ambient

temperature which is usually 850 psig @ 70° F.


1-3

F.

-120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120 14010

20

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For SI Units: 1 psi = 0.0689 bars: ºC = 5/9(ºF -32).

Figure 1-1 Variation of Pressure of Carbon Dioxide with Change in Temperature (Constant Volume). Below the critical

temperature (87.8º F) (31º C), carbon dioxide in a closed container is part liquid and part gas. Above the critical temperature

it is entirely gas.

Figure 1-1 Vapor Pressure Curve


1-4

1-4 QUALITY OF CARBON DIOXIDE

Carbon dioxide used for initial supply and replenishment shall be of good commercial grade, free of water and other contaminants that might cause container corrosion or interfere with free discharge through nozzle orifices. Carbon dioxide obtained by converting dry ice to liquid will not be satisfactory unless it is properly processed to remove excess water and oil. The vapor phase shall be not less than 99.5 percent carbon dioxide with no detectable off-taste or odor. The water content of the liquid phase shall be not more than 0.01% by weight (-30º F [-34º C] dew point). Oil content shall be not more than 10 PPM by weight. Caution: Carbon Dioxide should not be used to protect the following hazards:

1. Chemical compounds such as gunpowder or cellulose nitrate which supply

their own oxygen. 2. Reactive materials such as sodium, potassium, magnesium, titanium,

zirconium, uranium and plutonium. 3. Metal hydrides. 4. Chemicals capable of undergoing auto thermal decomposition (hydrazine

and certain organic peroxides).

1-5 SAFETY A. Pressure Hazard - The storage cylinders covered in this manual may contain

pressures over 850 psig (59 bar/5,861 kPa). Sudden release of this pressure may cause personal injury by issuing cold gas or liquid, or by expelling parts during servicing. Do not attempt any repairs on these cylinders until all pressure is released and the contents have been allowed to vaporize to ensure no pressure buildup can occur.

B. Extreme Cold - Cover Eyes and Exposed Skin - Accidental contact of the skin or eyes

with carbon dioxide may cause a freezing injury similar to frostbite. Protect your eyes and cover your skin when handling the tank or transferring liquid, or in any instance where the possibility of contact with liquid, cold pipes and cold gas may exist. Safety goggles or a face shield should be worn when withdrawing liquid or gas. Long-sleeved clothing and gloves that can be easily removed are recommended for skin protection.

C. Keep Equipment Well Ventilated - Although carbon dioxide is non-toxic and non-

flammable, it can cause asphyxiation in a confined area without adequate ventilation. An atmosphere of carbon dioxide does not contain enough oxygen for breathing and will cause dizziness, unconsciousness, or even death. Carbon dioxide cannot be detected by the human senses and will be inhaled normally as if it was air. Ensure there is adequate ventilation where carbon dioxide is used and store tanks in a well ventilated area.

D. Install Relief Valves in Liquid Lines - When installing piping make certain a suitable

safety relief valve is installed in each section of piping between valves. Trapped liquefied gas will expand as it warms and may burst hoses or piping causing property damage or injury.

Tomco2 Fire Systems Operation And Service 8/16/10 Rev. 0

SECTION 2

SYSTEM COMPONENTS

Table of Contents Paragraph Subject 2-1 Cylinder Assemblies 2-2 Discharge Bends and Adapters 2-3 Cylinder Brackets 2-4 Check Valves 2-5 Bleeder Valves 2-6 Discharge Nozzles 2-7 Manual Actuator 2-8 Electric Actuation 2-9 Discharge Pressure Switch 2-10 Pressure Release Trip 2-11 Header Safety 2-12 Pressure Operated Siren 2-13 Cylinder Assemblies 2-14 Lock-Out Valves 2-15 Pneumatic Time Delay

Tomco2 Fire Systems System Components 8/16/10 Rev. 0

2-1

SECTION 2

SYSTEM COMPONENTS 2-1 CYLINDER ASSEMBLIES

A basic cylinder assembly consists of a pressure vessel, a valve and siphon tube assembly, and a charge of carbon dioxide. A variety of cylinder sizes are available. They are all designed to hold pressurized carbon dioxide in liquid form at atmospheric temperatures, corresponding to a normal pressure of 850 psi at 70°F (58.6 bar at 21°C). All cylinders are seamless. They are manufactured and tested in accordance with the requirements of Department of Transportation and/or Transport Canada, Specification 3AA-1800 or higher. Larger cylinders having capacities of 35, 50, 75 and 100 pounds (15.9, 22.7, 34 and 45 kg) are made of steel. Small cylinders, used for special applications, have capacities of 10 and 15 pounds (4.5 and 6.8 kg) and may be made of aluminum or steel, depending on availability. Except for special temperature conditions, all cylinders are filled to their specified weight with liquid carbon dioxide. Cylinders are not partially filled. The pressure inside the cylinder will vary as the temperature changes. In general, the ambient storage temperature for standard cylinders used in local application systems should be between 32°F and 120°F (0°C and 49°C). For standard cylinders used in total flooding systems, the ambient storage temperature should be between 0°F and 130°F (-18°C and 54°C). Two cylinder valves are available: the SW-50M (master) and the SW-50S (slave). Both are manufactured of brass with an optional nickel plated finish. The valves are of the force differential type using a piston seal. The pressure above the piston is maintained at cylinder pressure, but the area at the top of the piston is greater than the seal area. This results in a higher force above the piston, which acts to keep the valve closed. To open the valve, the pressure above the piston is vented and cylinder pressure raises the piston to open the valve. A transport plug is attached to the valve by a chain attached to the discharge port when the cylinder is disconnected from the discharge piping. A pressure safety disc, incorporated into the cylinder valve, is designed to release pressure should the cylinder be subjected to exceptionally high temperatures or other abnormal conditions. The disc rupture point is in the range of 2,600 to 3,000 psi (182.7 to 206.8 bar). The safety disc nut is of a type that will relieve pressure without cylinder recoil. The SW-50M master valve can be operated manually, by pressure actuator, with a solenoid valve kit, or by direct back pressure from the discharge manifold. The SW-50S slave valve can b operated only by direct back pressure from the discharge manifold. Single cylinder systems simply require a single SW-50M with a manual actuator and/or a solenoid valve. This is generally referred to as a master cylinder. For systems with two cylinders interconnected, only one master valve is required. The other cylinder is operated by a SW-50S slave valve. For systems with three or more cylinders interconnected, two cylinders must act as masters and have solenoid and/or manual actuators arranged for simultaneous operation. A rigid siphon tube is used in all cylinders to ensure liquid discharge. All cylinders must therefore be installed in a normal upright position.


2-2

2-2 DISCHARGE BENDS AND ADAPTERS

A discharge bend is used to connect the cylinder valve outlet to the system manifold and discharge piping. This flexible hose allows for the temporary misalignment of the cylinders on installation, and for ease of cylinder removal for maintenance. The cylinder end of the hose has a swivel connection for ease of installation. A discharge bend with a built-in check valve must be used when cylinders are manifolded together. The check valve is locked onto the hose assembly and must not separated from it. If a cylinder assembly is disconnected from the discharge bend, and if the system operates while the cylinder is disconnected, the check valve will ensure that an appreciable quantity of carbon dioxide will not discharge from the disconnected discharge bend. Flexible discharge bend adapter combinations are available for single cylinder systems where a check valve is not required. When the discharge adapter is used without the flexible bend, a union connection must be installed close to the cylinder for ease of installation and maintenance. It is important that neither the discharge bends nor the discharge adapter be mounted onto the cylinder valve during transportation and storage. The transit plug must remain in place on cylinder valve until the cylinder is installed and secure in its brackets.

2-3 CYLINDER BRACKETS

The cylinder can be arranged to be bracketed to a wall or to be free standing when no wall is available. Straps for single cylinder wall mounting installations are available from Tomco Fire Systems. Brackets for multiple wall mounted installations and frames for multiple cylinder free standing installations are normally supplied by the installer, and assembled on site to suit space available. For installation of three or more cylinders, a variety of arrangements can be fabricated by installer. The single row, wall mounting arrangement is recommended for installations of up to five cylinders. Double row, free standing arrangements have the advantage (particularly for systems using main and reserve cylinders, and for joint systems), that any cylinder can be removed for recharging without disturbing the others. However, this arrangement requires two aisles and considerably more space. The double row, wall mounting arrangement is generally used when sufficient space is not available for free standing arrangement or for single row wall mounting arrangement. For marine applications, additional cylinder supports are required. Two straps or sets of retainers must be used.

2-4 CHECK VALVES

A range of check valves are available. These are used to isolate the main cylinder manifold from the interconnected reserve cylinder manifold. In the manifolds of joint systems they are also used to prevent the discharge from activated cylinders causing activation of the other cylinders in the bank.

2-5 BLEEDER VALVES

Bleeder valves are used in the manifolds of main and reserve banks of cylinders, as well as in the manifolds of systems that have selector valves (joint systems). The bleeder valve


2-3

vents accidental check valve leakage (that could discharge the other bank or banks of cylinders) from one bank to the other. The valve is normally open and closes when manifold pressure reaches approximately 20 psi (1.4 bar) to prevent loss of CO2 under normal discharge conditions. The pipe connection is 1/2" NPT.

2-6 DISCHARE NOZZLES

Two types of discharge nozzle are available: total flooding type and local application type. Total flooding nozzles are used where an even distribution of gas is required throughout and enclosure. Local application or directional nozzles are used where a concentration of carbon dioxide is required on a particular surface or piece of equipment. Nozzles are designed to discharge large volumes of carbon dioxide without freezing. For local application use (when installed in accordance with their approvals), the velocity of discharge from the nozzle is reduced to prevent agitation and splattering of hazardous material which could spread the fire. All nozzles have a drilled orifice. The nozzle orifice size will vary depending on the flow and the location of the nozzle in the system. It is important that nozzles are installed exactly as specified on the project drawings, otherwise system performance will be jeopardized. The wall type and vent type nozzles are used exclusively for total flooding installations. The S-Type nozzle may also be used for total flooding installations, however, its cost normally restricts its use to local application installations. The S-Type nozzle may be fitted to flanges to enable it to be mounted onto sheet metal equipment closures and ductwork. It may also be supplied with a frangible disc to prevent clogging of the orifice. Special finishes for nozzles are available and can be provided by special order to suit project requirements.

2-7 MANUAL ACTUATOR

A manual actuator is used to operate the carbon dioxide system manually and locally at the cylinders. The actuator is screwed into a port on the top of the SW-50M cylinders valve. When two master cylinders are required, the levers of the two actuators are joined together with a connecting link for simultaneous operation. The actuator has a hole in the side of the main body fitted with a blank plug. The hole allows to actuator to be operated from an external pressure source. It is also used to connect to the discharge from the solenoid valve (when used). The blank plug is removed from the actuator only for these two purposes. Otherwise the plug must remain tightly connected at all times. The hand lever on the manual actuator can be operated from a remote location. This is achieved be connecting 1/16” diameter stainless steel cable to the end of the lever, and running the cable through 1/2" conduit or 3/8” pipe to a pull box using corner pulleys at each change in cable direction. Using a mechanical dual junction box, two remote pull boxes can be joined to operate one master cylinder arrangement. Or, one remote pull box can be used to operate two separate manual actuators.

2-8 ELECTRIC ACTUATOR

Electric actuation is achieved by using a solenoid valve kit. The solenoid valve is normally closed device, closed when de-energized and open when energized. The standard solenoid voltage is 24 VDC, but other voltages and special enclosures (including explosion-proof) are available by special order. The standard electric connection is by a DIN connector, and a cable assembly is available for ease of connection to field wiring.


2-4

The solenoid coil is designed and rated for continuous duty service. However, it is recommended that the actuating circuit incorporate a shut-down device (e.g. a pressure switch or time delay relay) to open the circuit when the cylinder is empty. When the coil is energized for a long period of time, the solenoid enclosure becomes hot. This is a safe operating temperature and will not damage the solenoid. Any excessive heating will be indicated by smoke of burning coil insulation. The solenoid valve connects directly to a special adapter on the SW-50M cylinder valve. The discharge side of the solenoid valve is connected to the pressure port on the manual actuator with supplied 3/16” braided hose. When de-energized, the solenoid valve opens allowing pressure from above the main piston of the cylinder valve to operate the actuator and open the valve. The solenoid should be connected to a Listed control panel that is powered through a separately fused circuit, and that also incorporates battery backup power.

2-9 DISCHARGE PRESSURE SWITCH

The pressure switch connects to the carbon dioxide discharge piping and operates when the system discharges. The switch may be wired with contacts in the open or closed position. Operation causes the electrical switch contacts to reverse position. Switches can be used to confirm system discharge, to operate alarms, to shutdown motors, pumps, fans and conveyors, to release magnetic door holders, etc., automatically when the system discharges. The switch may be mounted in any position, but preferred installation in with the pressure connection (CO2 supply line) entering from the bottom. The switch enclosure is rated for standard and weatherproof conditions. When the line load of the equipment to be operated is greater than the switch rating, the switch should be used to break a relay holding-coil circuit.

2-10 PRESSURE RELEASE TRIP

The pressure release trip can be used to release dampers, close fire doors, windows, louvers, fuel supply valves, to open dump valves, etc., automatically when the system discharges. The equipment to be operated must be weight or spring loaded, or be pivoted off centre. The release trip is connected to a carbon dioxide discharge piping for operation when the system discharges. Cable from the equipment to be controlled is looped over the pressure release operating stem. When the trip is operated, the stem retracts and the cable is released.

2-11 HEADER SAFTEY This pressure relief device is installed in sections of closed piping such as between selector valves and the cylinder manifold. It is a frangible disc assembly designed to rupture if trapped CO2 expands and the line pressure exceeds 2,650 to 3,000 psi (182.7 to 206.8 bar). The body is made of brass and the pipe connection is 1/2" NPT.

2-12 PRESSURE OPERATED SIREN This unit sounds an alarm by means of carbon dioxide pressure. It is connected t the discharge piping of the system, or to a spate independent carbon dioxide cylinder. Sirens should be located throughout the hazard area in order to ensure an audible alarm will be heard on the activation and discharge of the carbon dioxide system. Due consideration should be given to the normal background noise in the area.


2-5

The carbon dioxide system incorporates a delayed action device, the siren must be arranged to operate at the same time that the delayed action device is initiated. When connected to the carbon dioxide system piping, the alarm will cease when the gas discharge had been completed. If it is desirable or necessary for the sirens to operate for a longer period of time than will be allowed by the system discharge time, a separate independent carbon dioxide cylinder must be used.

2-13 CYLINDER ASSEMBLIES Carbon dioxide cylinders may be located inside or outside the protected space, although it is preferable to locate them outside the space. When they are installed within the space they protect, a remote manual control should be installed to ensure the system can be actuated from a safe location outside the fire area. The cylinders should be located to provide convenient access so that they can be readily inspected and easily removed after use for recharging. They should not be installed where that will be exposed to the weather elements or the direct rays of the sun. Cylinders should not be installed where they will be subjected to temperatures of less than 0°F (-18°C) or higher than 130°F (54°C), unless otherwise specified. If cylinders are located in hazardous (explosion-proof) area, the cylinder solenoid should be approved for such use, and the installation of all materials needs to be done in an approved manner. Cylinders should be installed in the normal upright position. All cylinders are provided with a siphon tube.

.

2-14 LOCK-OUT VALVE ASSEMBLY A lock-out valve should be provided with all systems where CO2 could migrate creating a hazard to personnel. The valve should be located in the discharge piping between the nozzles and supply in the fire suppression system. The valve is used to prevent accidental or deliberate discharge when persons not familiar with the system are present in the protected space. The valve shall be maintained in the open position. Closing this valve takes the system out of service. The valve position should be continuously monitored at the control panel and is equipped with a pad-locking device to lock the valve in the open or closed position. Manually operated valves in the 1/2", 3/4", 1”, 1 1/4", 1 1/2" and 2” sizes are the full port ball valve type. Each valve is equipped with a pad locking type handle and supervisory switch is normally maintained in the fully open position.

2-15 PNUEMATIC TIME DELAY A pneumatic time delay shall be provided for all total flooding systems protecting normally occupied and occupiable enclosures and local application systems where the CO2 discharge will expose personnel to hazardous concentrations. The pneumatic time delay delays the discharge of CO2 for predetermined amount of time. This extra time allows additional time for ventilation and equipment shutdown. The time delay is installed between the master CO2 cylinders and the discharge nozzles. The time delay has inlet port and outlet port, both with a 3/4" NPT connection. The actual time delay period is per-set at the factory. Tomco Fire Systems offers both 30 and 60 second time delays. The time delay will operate at temperatures from 0 to 130°F. Note: Delay times will vary slightly with the ambient temperature. The time delay is equipped with manual override lever. This lever allows the time delay to be bypassed and allows the CO2 to discharge immediately.

High Pressure CO2 Fire Protection

7619 Hamilton Ave,Cincinnati, Oh 45231

Telephone+1 513 729-2473

Fax +1 513 729-3444

Websitetomcofi resystems.com

SW-50 Cylinder Valve

Page 1 of 1 51-0141-0997

SW-50MMaster Valve

SW-50SSlave Valve

DischargePort

SafetyRelief

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SolenoidActuator

ProtectionCap

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1inchNPT Thread

5 in(127 mm)

2 in(50 mm)

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Minimum Burst Pressure 6,000 PSI (414 Bar)

Safety Relief Operating Pressure 2,650 to 3,000 PSI (182 to 207 Bar)

Equivalent Length 5 feet (1.5 m) of ½" Schedule 40 Black Pipe

Dimensions 5" (127 mm) high x 2" (50 mm) wide

Operating Temperature 0° F to 130° F (-18° C to 54° C)

Weight 3.5 lb. (1.6 kg)

96060233 SW-50M Master Valve, Brass

96060286 SW-50M Master Valve, Nickel Plated

96060232 SW-50S Slave Valve, Brass

96060285 SW-50S Slave Valve, Nickel Plated

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Typical Single-Cylinder Installation

Page 1 of 1 51-1050-0398

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P/N

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1001

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237

39"

58"

Chec

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½" P

/N 9

6060

140

3/4"

P/N

960

6032

81"

P/N

960

6032

7

Main

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90º to operate

5 1/4 in(133 mm)

3 1/8 in(79 mm)

2 9/16 in(65 mm)

0.14 in(3.6 mm)

1/8" NPT hole with plug.This plug is to be removedonly to install a pressuresource.

Locking Nut.Unscrew 1/4 turnto orientate body.

SW-50 Discharge Valve

Ensure piston is retractedbefore assembling to valve.

ConnectingLink Assembly96060344 (Brass)

Manual/PressureActuator

SW50M

Manual/Pressure Actuator

Page 1 of 1 51-0142-0997

Connecting link used for simultaneous operation of two cylinder valves. Also used for remote manual cable operation, non-tension type.

1. Install actuator only after cylinders have been secured in their

brackets.

2. Before connecting actuator to cylinder valve, ensure:

a) (a) The pull pin is installed and secured with a seal.

b) (b) The piston is retracted as indicated.

3. Install the actuator to the cylinder valve, hand tighten.

4. Minimum pressure required for pressure operation:

For 850 psi cylinder pressure (70º): 260 psi

For 2,280 psi cylinder pressure (130º): 665 psi

5. When a solenoid actuator is used, discharge from solenoid valve

must be connected to the pressure port of the manual actuator.

Part Number: 96060235 (Brass) 96060235 (Nickel Plated)



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Solenoid Actuator

Page 1 of 1 51-0143-0997

DIN Connector

3/16" flexible hose.Connect to manual

actuator.

Tighten couplingnut securely

SW-50MCylinder Valve

Tighten afterconnecting

actuator to valve

Electrical Rating: 24 vdc, 10 watts.

Important 1. The carbon dioxide cylinder assembly must be restrained in its bracket and discharge piping connected

before solenoid actuator is connected to or disconnected from the cylinder valve.

2. The discharge from the solenoid valve must be connected to the manual actuator with the 3/16 inch fl exible

hose provided.

Notes1. The solenoid valve is normally closed. It opens when energized.

2. Solenoid enclosure is a general purpose type. Drip proof, raintight and explosion-proof enclosures are avail-

able by special order.

3. Standard voltage is 24 vdc. Other voltages are available by special order.

4. The solenoid valve is designed and rated for continuous duty service.

5. Operating temperature: 0 to 130 °F (-18 to 54 °C).

Part Number: 96060322



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Flexible Discharge Bends

Page 1 of 1 51-0144-0997

Hose Specifi cation

Hose Type SAE 100R1 Type AT

Minimum Burst Pressure 5,000 PSI

Minimum Bend Radius 9.5 Inches

Equivalent Length, Discharge Bend and Check Valve

7.3 Feet (2.22 m) Of 1/2" Std Black Pipe.

Bend Assembly22" overall Length

Check Valve

Swivel

DischargeAdapter P/N 96040148

Swivel

Discharge Bend& Check ValveP/N 96060237

Discharge Bendwith AdaptorP̀/N 96060242

Bend Assembly22" overall Length

1-1/16" - 12 UNValve Discharge Port

½" NPT Male solidto Manifold

½" NPT Male solidto Manifold

Use• The discharge bend and check valve are supplied locked

together as a single unit.

• The discharge bend and check valve assembly must be used whenever cylinders are manifolded together.

• The discharge bend and adaptor assembly may be used for single cylinder systems.

Installation• Cylinders and manifold must be installed securely before the

discharge bends are installed.

• Apply Tefl on tape (pipe sealant) to the solid male 1/2" NPT pipe thread on then end of the hose.

• Screw the solid male 1/2" NPT end of the discharge bend into the manifold, wrench tight.

• Remove the safety shipping plug from the discharge port of the SW-50 cylinder valve and install the swivel end of the discharge bend assembly into the discharge port of the valve, wrench tight.

704 S. 10th Street • P.O. Box 610 • Blue Springs, Missouri 64013-0610 U.S.A. • (816) 229-3405 • Fax (816) 229-0314 • www.�ke.com

Architect and Engineer Speci�cation

CATALOGNUMBERC.1.32.01

PNEUMATICTIME DELAY

July, 2002Revised Issue

Marine Suppression System

DESCRIPTION

The pneumatic time delay delays the discharge of CO 2 fora predetermined amount of time. This extra time allows per-sonnel to get out of the discharge area. It also allows addi-tional time for ventilation and equipment shutdown.

The time delay is installed between the master CO 2 cylin-ders and the discharge nozzles. The time delay has an inletport and an outlet port, both with a ¾" NPT connection. Theactual time delay period is pre-set at the factory. Tomco Fire Systems o�ers both 30 and 60 second time delays.

The time delay will operate at temperatures from 0 to 130° F.Note: Delay times will vary slightly with the ambient tem-perature.

The time delay is equipped with a manual override lever.This lever allows the time delay to be bypassed and allowsthe CO 2 to discharge immediately.

SPECIFICATIONS

Dimensions: 5 1/2" x 5 7/8" x 23 3/8"(139.7 x 149.2 x 593.7 mm)

Materials: Time Delay - BrassOverride lever - Stainless SteelPaint - Red gloss enamel

INSTALLATION

The pneumatic time delay is installed onto the dischargepiping of the manifold. The valve body has a 3/4" NPT(20mm) threaded inlet and outlet for the piping connection.It is recommended that a union be placed on either side ofthe time delay for ease of removal.

In a CO 2 system the pneumatic time delay must be placedafter the Master cylinder(s) and before the slave cylinder(s)connection(s) in the manifold. Refer to the typical arrange-ment drawings for installation con�guration.

P/N C70-235 (30 sec. delay)P/N C70-237 (60 sec. delay)

UL - Ex 4447ULC - CEx 1312FM - 3002238USCG - 162.161/2/0 (HFC-227ea)USCG - 162.038/12/0 (CO 2)

4 1/4"

22 1/4"

17"

TYP. 4 PLCS.

9/32" DIA

3 1/2" MAX(89 mm)

(565 mm)

(432 mm)

(7 mm)

6"(152 mm)

5 1/2"(140 mm)

(108 mm)

2"(51 mm)



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Half-inch Header Safety

Page 1 of 1 51-0156-0200

Safety Nut

Safety Disc

Safety Washer

Body

1/2" N

Bursting Pressure2650 to 3000 PSI

7/8" Hex




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Selector Valves

Page 1 of 1 51-0111-0109

DescriptionSelector or directional valves allow the use of a single group

of cylinders to protect multiple areas or hazards. These valves

act as blocking devices directing the fl ow of CO2 to the pro-

tected space. Valve sizes range from ½" (13 mm) to 4" (102

mm) outlet sizes.

Valves are provided with a screwed inlet and outlet connec-

tion. 3" and 4" valves have a fl anged connection on both.

¼" — 18 NPT Pilot pressure outlet

Seal Retainer Rings

Piston Seals

Pushrod416 SST

Body: Leaded redbrass, ASTM 4A

(85-5-5)

Bottom Cap:Cast brass Spring O-ring

Disc Holder:Brass, ASTM B16Alloy UNS C36000

Seat Disc

Pipe

¼" — 18 NPT Pilot pressure outlet

Top Cap: ForgedBrass, ASTM A124

Piston: Brass, ASTM B16Alloy UNS C36000

O-ring

Nut

Disc Nut

Flow

Ordering Information 9630610047 Selector Valve, ½ inch (13 mm), screwed9630610048 Selector Valve, ¾ inch (19 mm), screwed9610610371 Selector Valve, 1 inch (25 mm), screwed9610610369 Selector Valve, 1½ inch (38 mm), screwed9610610370 Selector Valve, 2 inch (51 mm), screwed9610610733 Selector Valve, 3 inch (76 mm), fl anged9610610734 Selector Valve, 4 inch (102 mm), fl anged9620480482 Actuation Kit for Selector Valves with manual actuation.96060347 Selector/Stop Valve, ½-¾" brass, R1 type

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Page 1 of 1 51-0102-0304

Pressure Operated Switch

Tube x N.I.P. Fitting

If additional switchesor release trips are required,install Tee and branch toother units.

Tube x N.I.P. Fitting

3/16" or 1/4" o.d.x 0.32" wall tube

Pipe tonozzles

Pipe fromcylinders

Typical installationusing copper tubing

Mounting and applicationThe switch may be mounted in any position, but the preferred installation is with the pressure connection (gas supply line) entering from the bottom.

Installation can be made using 1/4" steel pipe and fi ttings. Alternately, 1/4" or 3/16" x .032" wall soft copper tubing with swagelock or equal fi ttings can be used.

Note: When the line load is greater than the switch rating, the switch should be used to break a relay holding coil circuit (relay supplied by others).

TestingTo test the circuits and to ensure auxiliary functions operate correctly:

Either..

1. Disconnect the union at the pressure connection, insert a small rod into the pressure connection of the cover plate, and push against the piston to trip the switch. Push the plunger down to reset the switch.

Or...

2. Remove the four cover screws and swing the cover away from the switch box. Manually operate the interior toggle switch. After testing, ensure the toggle is mounted in the normal standby position, then reinstall the cover plate.

Pressure Switch, Part No. 96060247Double pole, double throw

Rating: 15 Amps, 120 Vac per pole 8 amps, 240 Vac per pole 1 HP, 120 Vac, 5 phase

Finish: Cadmium plated weatherproof enclosure

Pressure switches can be used to shut down motors, pumps, fans, or operate alarms, release doors, or provide confi rmation of extinguishment system operation, etc. automatically when the extinguishing system discharges.

The pressure connection of the switch can be connected to the discharge piping of any cylinder in the system, or to the nitrogen actuation tubing, if used. 1 1/4 in

Operated Position

Reset Plunger(raised positionindicates theswitch hasoperated.

Name Plate

Togle switch innormal "standby"position.

Piston

Cover Plate

1/4" NPT(Pressureconnection)

Moisture-proofjoint

Switch box

For ½" Electricconduit

2 1/4 in

1 3/4 in



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Bleeder Valve

Page 1 of 1 51-0168-0403

Part no. 96040343 This bleeder valve is installed in main and reserve cylinder manifolds to vent ac-

cidental check valve leakage during discharge of one cylinder bank. If unvented,

accumulated leakage pressure could cause actuation of the other cylinder bank.

The valve closes when manifold pressure reaches approximately 20 PSIG to

prevent agent loss under normal discharge conditions.

7/8" Hex

2-1/2"Vent

1/2" NPT

The lock-out valve is a manually operated valve used to inhibit the discharge of CO2 into an entire sys-tem or specific area of a system. The valves are rated to a working pressure of 2,200psi WOG. The valve is equipped with a supervisory switch for remote monitoring and a locking device to pad lock the valve in the open or closed position. Material: Switch Rating: Body: Carbon Steel Housing: NEMA 4 Ball/Stem: Stainless Steel Contacts: 10a 24vDc/120vac/250vac Seats: RTFE Approval: FM Approvals FM Approvals has not verified the NEMA rating of the housing.

1/2” - 2” Lock-out Valve

Tomco Fire Systems 7619 Hamilton Avenue Cincinnati, OH 45231

Equipment Data Sheet 990920 Rev. 0 5/06

A B

C

LOCKING DEVICE

3/4" [19] NPT CONDUIT OPENING

POSITIONINDICATOR

D

EF

Refer to next page for dimensional information

1/2” - 2” Lock-out Valve

Tomco Fire Systems 7619 Hamilton Avenue Cincinnati, OH 45231

Equipment Data Sheet 990900 Rev. 0 5/06

Size Part Number

A B C D F

1/2” 990920 7 5/8” (194)

6 3/8” (162)

3” (76)

10 1/2” (267)

6 1/2” (165)

3/4” 990921 7 5/8” (194)

6 3/8” (162)

3 3/8” (86)

10 3/4” (273)

6 1/2” (165)

1” 990922 7 5/8” (194)

6 3/8” (162)

4” (102)

11 1/4” (286)

9 7/8” (251)

1 1/4” 990923 7 5/8” (194)

6 3/8” (162)

4 3/8” (111)

11 7/16” (291)

9 7/8” (251)

1 1/2” 990924 7 5/8” (194)

6 3/8” (162)

5” (127)

11 3/4” (299)

10 7/16” (265)

2” 990925 7 5/8” (194)

6 3/8” (162)

5 3/4” (146)

12 1/8” (308)

10 7/16” (265)

E

11 5/8” (296)

11 15/16” (303)

12 11/16” (322)

13 3/16” (335)

13 5/8” (346)

14 9/16” (370)

Weight

5.5 lbs 2.5 kg

7 lbs 3.2 kg

8.5 lbs 3.9 kg

11 lbs 5 kg

14 lbs 6.4 kg

21 lbs 9.5 kg

RED

BLUE

YELLOW

RED

BLUE

YELLOW

N.O.

N.C.

COM.

N.O.

N.C.

COM.

LOWER/CLOSE

UPPER/OPEN

CAMS

Switch Configuration



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1.75

1/2" NPT

7/8 AF

Nozzle orficesized to suitsdesign requirement


Half inch Wall Nozzle for Total Flooding Applications

Page 1 of 1 51-0145-0899




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Pneumatic Siren

Page 1 of 1 51-0152-0997

Decibel Rating: 90 dBa @ 10' [3.05m]CO2 Consumption: 12lbs/min [5.5 kg/min]Materials: Housing: Brass Wheel: Stainless SteelPart Number: 990979Approval: FM Approvals



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Page 1 of 1 51-0100-0304

Pressure Release Trip

3 1/2"25/32"

1 1/2"

3 1/8"

Spring Piston

Stem

1/4" NPT pressure connection

Vent withrubber bung

2 mounting holes(3/8" dia.)

Re lease Tr ip, P art No. 96060246Body material: Cast brass

Tube X M.I.P . Fitting

OptionalAnti-vibration

Bracket

Extinguishingagent suppl y

To device operatedor released

Ty pical Connectio nRe lease T rip

to Discharge Piping

Notes These units are used to release dampers,

doors, windows, louvres, to open dump

valves, and to close fuel supply valves, etc.

automatically when agent discharges.

The equipment to be operated must be weight

or spring loaded, or be pivoted off-centre.

The pressure connection of the trip can be

connected to the discharge piping of any

cylinder in the system, to the rid valve pilot

tubing, or to the nitrogen actuation tubing.

The maximum load that can be hung on the

piston stem is 76 lb. (34 kg).

Connection can be made in 1/4" steel pipe,

1/4" or 3/16" x .032" wall soft copper tube.

Swagelok, Gyrolok, or similar fi ttings are

recommended for tube connections.

If additional release trips or pressure switches

are required, install branch tees to suit.



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Remote Manual Control Application

Page 1 of 1 51-0108-0304

Installation Notes 1. Run cable in 1/2" EMT conduit or 3/8" diameter pipe.

2. Install a corner pulley at each change in direction of cable.

3. Covers of corner pulleys must be accessible after installation to allow removal for installa-

tion of cable.

4. Remote manual pull box should be installed three to fi eve feet above fl oor level in a readily

accessible location, and in the main egress from the protected space.

5. Ensure space in front of pull box will allow a straight pull of approximately nine inches.

6. Before starting to install the cable, ensure the safety pin is installed in the actuator(s). Re-

move the safety pin after completion of cable installation.

7. Maximum length of 1/16" stainless steel cable that can be installed is 500 feet.

8. Maximum number of pulleys that can be used:

a) on a single run is 15.

b) on a double run arrangement is 18, with a maximum of nine on any one leg.

Installation N Notes 1. Run cable in 1/2" EMT conduit or 3/8" diameter pipe.

2. Install a corner pulley at each change in direction of cable.

3. Covers of corner pulleys must be accessible after installation to allow re

tion of cable.

4. Remote manual pull box should be installed three to fi eve feet above fl o

accessible location, and in the main egress from the protected space.

5. Ensure space in front of pull box will allow a straight pull of approximately

6. Before starting to install the cable, ensure the safety pin is installed in th

move the safety pin after completion of cable installation.

7. Maximum length of 1/16" stainless steel cable that can be installed is 50

8. Maximum number of pulleys that can be used:

a) on a single run is 15.

��

��

��

��

��

��

��

��

FOR FIREOPEN DOOR

PULL HANDLE HARD

��

��

FOR FIREOPEN DOOR

PULL HANDLE HARD

��

��

30° max.

9" min. clear(typical)

ConnectingLink

Cable Clamp Conduit Bracket& Fitting

90° Corner Pulley

To Pull Box

1/16" dia.StainlessSteel Cable

Lever-operated Actuator

Conduit Bracket& Fitting

½" Conduitor 3/8" Pipe

To Cylinder ValveActuator

Pull Boxes

SingleActuationfrom twoPull Boxes

Alternatively, actuation of twoseparate devices (i.e.: cylindervalve and selector valve) froma single pull box.



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Remote Manual Control Components

Page 1 of 1 51-0109-0304

2 11/16"

1 1/8"

4"

1" 2"1 3/4"

7/8"

"A"(See table)

3/8" diametermounting holes

3/4"3/8"

1/2"

3/8" diameter mounting holes

16 1/2"

1" (max.)9" (min.)

Direction of pull(see note)

Note: to pull in the opposite direction, reverse the two boxed dimensions.

33/8"

21/4

FOR FIREOPEN DOOR

PULL HANDLE HARD

FOORR FIIIRRRRRRRREEEEEEOPPEENENENNNNNNNN DD DDOOOOOOOORRRRRRR

PUULLLLL HHAAAAANNDDLDLDLDLDLDLLLLLLLLLEEEEEEE HHARDD

4 3/16"

4 1/8"

3/8" pipethread

15/16"diam .

1/2"1-7/16"

2 7/8 "

Provideadequate

clearance

for door to

open fully

90 º Corner PulleyPart No. 96060245

Cable ClampPart No. 96060012

Dual JunctionPart No. 96060256

Latch T ype Pull BoxPart No. 96060259

Conduit Brackets

Both holesthreaded for3/8" pipe

Two socketset- screws

Coverfasteningscrews

Lead and wire seal brokenwhen catch is opened

Two 3/16" diametercountersunkmountingholes

Base of pull boxwall mounted

Pullhandl e

Catch

Conduit Bracket Dimension "A" Used on...

96060257 1 3/4" Small cylinders up to 20 lbs.

96060248 2 1/2" Large cylinders more than 50 lbs.



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S-Type Discharge Nozzle

Page 1 of 1 51-0146-0202

Installation withseal in place

Installationwithout seal

Orifice codestamped here

1/2" NPT

Flange setP/N 96060353

Nozzle assyP/N 96060291

Installationwith seal

without enclosure

Enclosure

SealP/N

96040504flanges

5/16 cap screw

5/16 nut

5/16 lockwasher

(To be replacedafter eachdischarge)

Height

ft.

Flow Rate

(lb per min.)

Area of

Coverage

(sq. ft.)

1 16 5.0

2 24 7.0

3 32 8.7

4 41 10.7

5 49 12.6

6 57 14.5

7 66 15.0

8 74 15.0

Nozzles up to and including #5 orifi ce are equipped with

strainers.

Materials: horn - steel ni pltd

insert & body - brass

fl anges - steel ni pltd

Flange set consists of two fl anges, seal, 3 nuts, bolts 7

washers. Ordered as a set.

Installation1. Cut a 3-5/8" dia. Hote in side of enclosure where

shown on system drawing. Drill three 3/8" holes for

cap screws using a clamping fl ange as a template.

2. If hazard is totally enclosed (i.e. In an air duct), cut a

hand hole adjacent to nozzle for access for nut and bolt

fi xing. (Cover hand hole after nozzle installation.)

Performance Data



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Vent Nozzle

Page 1 of 1 51-0169-0203

Nozzle orficesized to suit

design requirements

1/2" NPT

1/2" NPT

1.69in

1-1/8 AF

MATERIAL: BRASS




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Test Unit, 24 VDC Solenoid Valve

Page 1 of 1 51-0135-1099

Dummy Solenoid Coil

Attach connector cable here.

LED will light when solenoid

circuit is activated.

LEDLight Adapter

This unit is insensitive to polarity and is

equipped with VDR protection against overvol-

tages when switching off.

Hig

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4523

1Te

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+1

513

729-

2473

Fax

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513

729-

3444

Web

site

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Was

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Mar

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36"

(91c

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36"

(91c

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36"

(91c

m)

15”

(38

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CO2 Pressure/Temperature Curve

Page 1 of 1 51-0140-0997

180

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This curve shows the pressure in carbon dioxide cylinders at various tem-

peratures when fi lled to a percentage of their water capacity.

In general, cylinders should not be fi lled to more than 68% or less than 60%

of their water capacity. Cylinders currently supplied by inControl fi re are

fi lled to 68% of their water capacity.

Percent fi lling = Lb. CO2 in cylinder

x 100

Lb. water capacity of cylinder



Telephone+1 513 729-2473

Fax +1 513 729-3444


Warning Signs

Page 1 of 1 51-0149-0997

WARNINGCarbon dixide gascan cause injury ordeath.When alarm operates,do not enteruntil ventilated.

CAUTIONCarbon dixide gascan cause injury ordeath. Ventilate thearea before entering. Ahigh carbon dioxide gasconcentration can occurin this area and cancause suffocation.

7"

[177.80]

10"

[254.00]

Ø1/8" [Ø3.18]

CAUTIONCarbon dixide gas cancause injury or death.Carbon dioxide gasdischarge into nearby space can collect here.When alarm operatesvacate immediately.

WARNINGCarbon dixide gascan cause injury ordeath.When alarm operates,vacate immediately.

Part Number: 990491 Part Number: 990493

Part Number: 990492 Part Number: 990495

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Tomco2 Fire Systems System Design 8/16/10 Rev. 0

SECTION 3

SYSTEM DESIGN

Table of Contents Paragraph Subject 3-1 General 3-2 Total Flood System Design 3-3 Local Application System Design


3-1

SECTION 3

SYSTEM DESIGN

3-1 GENERAL

This section is provided as a guide in designing a high pressure CO2 fire extinguishing system. The two major types of systems covered in this section are total flooding and local application.

3-2 TOTAL FLOOD SYSTEM DESIGN

A. A total flooding system consists of a fixed supply of carbon dioxide connected to a piping network with fixed nozzles that discharge into an enclosed space. This type of system may be used whenever an enclosure exists about the hazard. The enclosure must be adequate to contain the discharge of agent to achieve the required carbon dioxide concentration. Figure 3-1 illustrates a total flood design process.

B. Fires which can be extinguished by total flooding methods may be divided into two

categories:

1. Surface fires involving flammable liquids, gases and solids. 2. Deep seated fires involving solids subject to smoldering.

C. Surface fires are the most common hazard and are usually subject to prompt

extinguishment when carbon dioxide is quickly introduced into the enclosure in sufficient quantity.

D. For deep-seated fires, the required extinguishing concentration shall be maintained for

a sufficient period of time to allow the smoldering to be extinguished and the material to cool to a point to prevent re-ignition.


3-2

SYSTEM DESIGN PROCESS

TOTAL FLOODING

Caution: This design criteria is for enclosure temperature only.

Figure 3-1

Total Flood Design Process


3-3

3-2.1 Quantity Calculations for Surface Fires A. Section 5-3 of NFPA Standard 12 2005 gives the guidelines for determining the

quantity of carbon dioxide quantities for surface fires. B. The minimum design concentration of carbon dioxide required in no case shall

be less than 34%.

C. Table 3-1 lists the minimum design concentrations required for extinguishment of some common liquids and gases.


3-4

Material Minimum Design CO2

Concentration (%) Acetylene 66 Acetone 34 Aviation Gas Grades 115/145 36 Benzol, Benzene 37 Butadiene 41 Butane 34 Butane 1 37 Carbon Disulfide 72 Carbon Monoxide 64 Coal or Natural Gas 37 Cyclopropane 37 Diethyl Ether 40 Dimethyl Ether 40 Dowtherm 46 Ethane 40 Ethyl Alcohol 43 Ethyl Ether 46 Ethylene 49 Ethylene Dichloride 34 Ethylene Oxide 53 Gasoline 34 Hexane 35 Higher Paraffin Hydrocarbons 34 Hydrogen 75 Hydrogen Sulfide 36 Isobutane 36 Isobutylene 34 Isobutyl Formate 34 JP - 4 36 Kerosene 34 Methane 34 Methyl Acetate 35 Methyl Alcohol 40 Methyl Butane 1 36 Methyl Ethyl Ketone 40 Methyl Formate 39 Pentane 35 Propane 36 Propylene 36 Quench, Lube Oils 34

Note: The theoretical minimum extinguishing concentrations in air for the above materials

were obtained from a compilation of Bureau of Mines Limits of Flammability of Gases and Vapors (Bulletins 503 and 627).

Table 3-1

Minimum Carbon Dioxide Concentrations for Extinguishment (TABLE 5.3.2.2 from NFPA 12 2005)


3-5

D. In figuring the net cubic volume to be protected, the volume of permanent, non-removable, impermeable structures may be subtracted from the gross volume to be protected, however, this allowance is not recommended.

E. In two or more interconnected volumes where "free flow" of carbon dioxide can

take place, the carbon dioxide quantity shall be the sum of the quantities for each volume, using its respective volume factor from table 3-2. If one volume requires greater than 34% concentration, the higher concentration shall be used in all interconnected volumes.

Volume of Space Volume Factor Calculated Quantity

(ft3 Incl.) (ft3/lb. CO2) (lb. CO2/ft3) Not Less Than

Up to 140 14 .072 ---- 141 500 15 .067 10 501 1,600 16 .063 35

1,601 4,500 18 .056 100 4,501 50,000 20 .050 250 Over 50,000 22 .046 2,500

Table 3-2

Flooding Factors For 34% Concentration (Table 5.3.3(a) NFPA 12 2005)

3-2.2 Material Conversion Factor

For materials requiring a design concentration over 34%, the basic quantity of carbon dioxide calculated from the volume factor given in table 3-2 shall be increased by multiplying this quantity by the appropriate conversion factor given in table 3-3.

4

3

2

130 34 40 50 60 70 80 90

Minimum Design CO2 Concentration - %

Conversion Factor

Table 3-3 Material Conversion Factors (Table 5.3.4 NFPA 12 2005)


3-6

3-2.3 Special Conditions A. Additional quantities of carbon dioxide shall be provided to compensate for any

special condition that may adversely affect the extinguishing efficiency. B. Any openings that cannot be closed at the time of extinguishment shall be

compensated for by the addition of a quantity of carbon dioxide equal to the anticipated loss at the design concentration during a one (1) minute period. This amount of carbon dioxide shall be applied through the regular distribution system. See 5.4.4.1 of NFPA Standard 12 2005.

C. For ventilating systems which cannot be shut-down, additional carbon dioxide

shall be added to the space through the regular distribution system in an amount computed by dividing the volume moved during the liquid discharge period by the flooding factor. This shall be multiplied by the material conversion factor determined in table 3-3 when the design concentration is greater than 34%.

D. For applications where the normal temperature of the enclosure is above 200º F

(93º C), a 1% increase in the calculated total quantity of carbon dioxide shall be provided for each additional 5º F (-15º C) above 200º F (93º C).

E. For applications where the normal temperature of the enclosure is below 0º F

(-18º C), a 1% increase in the calculated total quantity of carbon dioxide shall be provided for each degree below 0º F (-18º C).

F. Under normal conditions, surface fires are usually extinguished during the

discharge period. Except for unusual conditions, it will not be necessary to provide extra carbon dioxide to maintain the concentration.

G. A flooding factor 8 ft3/lb. shall be used in ducts and covered trenches. If the

combustibles represent a deep-seated fire, it shall be treated as described in section 3.2.4.

3-2.4 Quantity Calculations for Deep Seated Fires

The quantity of carbon dioxide for a deep-seated type fire is based on a fairly tight enclosure. After the design concentration is reached, the concentration shall be maintained for a substantial period of time, but not less than 20 minutes. Any possible leakage shall be given special consideration since no allowance is included in the basic flooding factors.

3-2.5 Combustible Materials A. For combustible materials capable of producing deep-seated fires, the required

carbon dioxide concentrations cannot be determined with the same accuracy possible with surface burning materials. The extinguishing concentration will vary with the mass of material present because of the thermal insulating effects. Flooding factors have therefore been determined on the basis of practical test conditions.

B. The design concentrations listed in table 3-4 shall be achieved for the hazards

listed. Generally, the flooding factors have been found to provide proper design concentrations for the rooms and enclosures listed.


3-7

C. Flooding factors for other deep seated fires shall be justified to the satisfaction of the authority having jurisdiction before use. Proper consideration shall be given to the mass of material to be protected because the rate of cooling is reduced by the thermal insulating effects.

Design ft3/lb. m3/kg lbs. kg Specific Hazard Concentration % CO2 CO2 CO2/ft

3 CO2/m3

50 10 0.62 0.100 1.60 Dry electrical hazards in

general. (Spaces 0-2000 ft3) 50 12 0.75 0.083

(200 lb. minimum)

1.33 (91 kg

minimum)

Dry electrical hazards in general. (Spaces greater than 2000

ft3)65 8 0.50 0.125 2.00 Record (bulk paper) storage,

ducts and covered trenches. 75 6 0.38 0.166 2.66 Fur storage vaults, dust

collectors.

Table 3-4 Flooding Factors for Specific Hazards

(Table 5.4.2.1 NFPA 12 2005)

D. For deep seated fires the design concentration shall be achieved within 7

minutes as specified in Paragraph 5.5.2.3 of the NFPA Standard 12 2005. In addition to the basic quantity, any leakage or temperature factors must be added. The discharge rate shall develop a concentration of 30% that must be achieved within 2 minutes. To develop the 30% concentration within 2 minutes a flooding factor of 0.043 lbs/fr3 should be used.

3-2.6 Estimated Flow Rate Calculations

A. The problem encountered in flow rate calculations is complicated by the physical

characteristics of carbon dioxide. The agent leaves the storage tank as a liquid at saturation pressure (850 psig @ 70º F).

B. As the temperature of the liquid increases as it flows through the discharge

piping, the liquid CO2 begins to vaporize producing a mixture of liquid and vapor. As the pressure increases, the density of the vapor over the liquid increases. On the other hand, the liquid expands as the temperature goes up and its density decreases. This phenomenon reduces the density of the agent and results in an increase in the flow velocity.

C. Since the flow rate for the vapor phase is considerably less than the flow rate for

the liquid phase, compensation must be made during the calculation of the actual flow rate.

3-2.7 Nozzle Placement Guide A. Tomco2 Fire Systems uses both wall, vent or s-type discharge nozzles for total

flood hazards. All of these types of nozzles have proven to be effective in providing a uniform concentration throughout the hazard enclosure.


3-8

B. The wall nozzle usually creates a high velocity discharge that provides a

thorough mix of CO2 throughout the entire enclosure. S-type nozzles are usually used when a slower more "cushioned" discharge is required in areas such as computer rooms, sub-floor areas or records vaults where a high velocity discharge could seriously damage the contents. Vent nozzles are typically used in small spaces, such as duct work.

C. It is not necessary to place the nozzles directly at the ceiling level. In

applications where obstructions are encountered at the ceiling level, the nozzles should be installed lower than these obstructions. In no case should the nozzles be installed less than 3' above the highest object within the protected enclosure.

D. A full discharge test shall be conducted on all systems. The coverage of nozzles

in the actual installation will be verified by this test except when waived by the authority having jurisdiction. More often the area of coverage per nozzle will be reduced from the above recommended maximums due to:

1. Inability of single nozzle to deliver the required flow rate to flood the

maximum area. 2. Consideration of obstructions within the hazard that require additional

nozzles to cover the space on both sides of the obstruction. 3. The hazard contains delicate or fragile materials that might be damaged by a

highly turbulent discharge.

Table 3-5 Nozzle Spacing

E. The particular shape or the contents of a hazard may also necessitate a greater number of nozzles than what is shown on the above chart.

F. The wall nozzle can be used in most total flood applications. Maximum spacing

shall not exceed 16ft. G. Wall nozzles should not be used for protecting ducts, pits or covered trenches. H. In special applications requiring a low velocity discharge, s-type nozzles usually

associated with local application may be used in total flooding systems and should not exceed a maximum side dimension of 16 feet.

I. Protection of any unusual shaped volumes or excessive ceiling heights should be

directed to Tomco2 Fire Systems.


3-9

3-3 LOCAL APPLICATION SYSTEM DESIGN

3-3.1 General A. A local application system consists of a fixed supply of carbon dioxide

permanently connected to a system of fixed piping with nozzles arranged so as to discharge the agent directly onto the hazard.

B. Local application systems are used for the suppression of surface fires in

flammable liquids, gases and shallow solids where the hazard is not enclosed or where the enclosure does not conform to the requirements for total flooding. Examples of hazards that may be protected by local application systems include dip tanks, quench tanks, spray booths, machining operations and printing presses. Figure 3-2 illustrates a local application design process.

C. A discharge test must be conducted to verify complete coverage of the hazard

based on nozzle placement.

D. To determine the nominal cylinder storage capacity for all local application systems, the computed quantity of carbon dioxide shall be increased by 40% to compensate for the vapor phase of discharge. Only the liquid portion of the discharge is effective.


3-10

LOCALAPPLICATION

SURFACEWETTED

SURFACELIQUID

NOZZLEPLACEMENT

ANALYSISHAZARD

NOZZLEFLOW RATE

AGENTQUANTITY

HYDRAULIC

DETECTION

CALCULATIONS(NOZZLEORIFICE

CODES ANDPIPE SIZES)

ANDACTUATIONEQUIPMENT

Figure 3-2 Local Application Design Process


3-11

3-3.2 Types of Surface Fires A. Within the scope of this manual, two types of surfaces must be considered:

liquid surfaces and wetted or coated surfaces. The liquid surface is that surface of deep layer of flammable liquid usually more than 1/4" in depth that is exposed to the atmosphere. Wetted or coated surfaces are defined as those designed for drainage which are constructed and maintained so that no pools of liquid usually less than 1/4" in depth and will accumulate over a total area exceeding 10% of the protected surface. This does not apply where there is a heavy buildup of residue.

B. National Fire Protection Association NFPA 12 Standard For Carbon Dioxide

Systems and FM Global Property Loss Control Data Sheets should be referenced when determining the suitability of a hazard for the local application method of protection.

3-3.3 Duration of Discharge

The minimum effective discharge time for computing quantity of agent shall be 30 seconds of liquid discharge at the nozzles. Where there is a possibility that metal or another material may become heated above the ignition temperature of the fuel, the effective (liquid) discharge time shall be increased to permit adequate cooling of the material. Special fuels such as paraffin wax or cooking oil require a minimum discharge time of 3 minutes because the auto-ignition point is below its boiling point.

3-3.4 Methods of Application There are two accepted methods of calculating the quantity of CO2 required for local application systems. The RATE-BY-AREA METHOD is used where the fire hazard consists primarily of a flat surface or low level objects associated with horizontal surfaces. The RATE-BY VOLUME METHOD of system design is used where the fire hazard consists of three dimensional irregular objects that cannot easily be reduced to equivalent surface areas.

3-3.5 Rate-By-Area Method A. For rate-by-area local application systems, the quantity of CO2 required to protect

a hazard is based on the summation of the listed discharge rates from all individual nozzles. The discharge rate for each nozzle is determined by the distance from the surface to be protected to the nozzle. The discharge rate and distance from the protected surface to nozzle determines the maximum area which a nozzle can protect. The flow rates, area of coverage and height limitations are found in tables 3-8, 3-9, 3-10.

B. Overhead type nozzles shall be installed perpendicular to the hazard and

centered over the area protected by the nozzle. They may also be installed at angles between 45 degrees and 90 degrees from the plane of the hazard surface as described in table 3-7. The height used in determining the necessary flow rate and area coverage shall be the distance from the aiming point on the protected surface to the nozzle measured along the axis of the nozzle.

C. When installed at an angle, nozzles shall be aimed at a point measured from the

near side of the area protected by the nozzle, the location of which is calculated


3-12

by multiplying the fractional aiming factor in table 3-7 by the width of the area protected by the nozzle.

D. If there is a physical limitation on the height of the nozzle above the protected

surface, this height limitation may determine the number and type of nozzles that must be used. If there are no restrictions on nozzle height, the minimum number of nozzles may be used based on the maximum allowable distance.

E. When coated stock or parts extend above a protected surface more than two feet

additional nozzles may be required to protect this stock. When determining the location of nozzles, considerations should be given for the possible affects of air currents, winds and forced drafts, as additional nozzles may be required.

3-3.6 Rate-By-Volume Method A. If a hazard is three dimensional in nature and cannot be easily reduced to

equivalent surface areas, rate-by-area protection is not recommended. For such three dimensional solid type hazards a rate-by-volume approach should be used when designing a local application system using the rate-by-volume method.

B. The total discharge rate of the system shall be based on the volume of an

assumed enclosure entirely surrounding the hazard. C. The assumed enclosure shall be based on an actual closed floor unless special

provisions are made to take care of bottom conditions. D. The assumed walls and ceiling of this enclosure shall be at least 2 ft (0.6 m) from

the main hazard unless actual walls are involved and shall enclose all areas of possible leakage, splashing or spillage.

E. No deductions shall be made for solid objects within this volume. F. A minimum dimension of 4 ft (1.2 m) shall be used in calculating the volume of

the assumed enclosure. G. If the hazard may be subjected to forced drafts, the assumed volume shall be

increased to compensate for losses on the windward sides. H. Calculation of the system discharge rate and quantity of CO2 required is based

on the volume of an assumed enclosure surrounding the hazard. The assumed enclosure is based on the presence of a closed floor under the hazard. The assumed enclosure is at least two feet in all directions from the actual hazard. The basic system discharge rate is then calculated using one lb. per min. per cubic foot of assumed volume.

I. Location and Number of Nozzles. A sufficient number of nozzles shall be used

to adequately cover the entire hazard volume on the basis of the system discharge rate as determined by the assumed volume.

J. Nozzles shall be located and directed so as to retain the discharged carbon

dioxide in the hazard volume by suitable cooperation between nozzles and objects in the hazard volume.


3-13

K. Nozzles shall be located so as to compensate for any possible effects of air

currents, or forced drafts. 3-3.7 Rate-By-Volume Partial Enclosure

A. If the assumed enclosure has a closed floor and is partly defined by permanent

continuous walls extending at least 2 ft. above the hazard (where the walls are not normally part of the hazard) the discharge rate may be proportionately reduced to not less than 0.25 lbs./min./cu. ft. (NFPA 12 2005 paragraph 6.5.3.2)

B. Refer to figure 3-3 to determine the allowable flow rate reduction for a hazard

with a partial enclosure.

% PERIMETER ENCLOSED

0

.25

25

50

.75

LBS/MIN/CU FT

.375

.4.425.45

.50

.475

.625 1.0.875

75

100

RATE BY VOLUMEMATHEMATICAL METHODFACTOR = [% PERIMETER OPEN

(EXPRESSED AS A DECIMAL)x .75] + .25

Figure 3-3 Partial Enclosure Flow Rate Reduction per NFPA 12

Discharge Angle (1) Aiming Factor (2) 45-60 1/4 60-75 1/4-3/8 75-90 3/8-1/2

90 (Perpendicular) 1/2 (Center)

Note: (1) Degrees from plane of hazard surface. (2) Fractional amount of nozzle coverage side-of-square.


3-14

Example:

Note: Distance “X” and the flow rate are the same in both examples, only the aiming point for the nozzle changes.

Tomco2 Fire Systems Installation 8/16/10 Rev. 0

SECTION 4

INSTALLATION

Table of Contents Paragraph Subject 4-1 General 4-2 Pipe and Fittings 4-3 Welding Connections 4-4 Tubing Connections 4-5 Pipe Hangars and Bracing 4-6 Expansion Joints 4-7 Cylinder Assemblies 4-8 Installation of Cylinders 4-9 Installation of Pipe and Fittings 4-10 Installation of Nozzles 4-11 Local Manual Control 4-12 Remote Cable Manual Control 4-13 Solenoid Actuator 4-14 Discharge Pressure Switch 4-15 Pressure Release Trip 4-16 System Verification and Testing 4-17 Inspection for Mechanical Integrity 4-18 Pressure and Leak Test 4-19 Pipe Sleeves 4-20 Pneumatic Time Delay


4-1

SECTION 4

INSTALLATION

4-1 GENERAL

This specification is to be used as a minimum standard for installation of piping, supports, hangers and system components. If the requirements of local, national codes or the authority having jurisdiction are more stringent, these more stringent requirements shall take precedence. Installation shall be performed in a workman like manner according to the highest standards. A. All pipe and fittings shall be new and of recent manufacture. B. All pipe shall be reamed after cutting so that all burrs and sharp edges are removed. C. All pipe shall be blown clean and swabbed thoroughly with solvent inside before

installation to remove foreign matter and oil. Some effective solvents are trichlorethylene, perchlorethylene or trichlorethane.

D. All pipe and fittings installed outdoors or in corrosive areas should be galvanized or

coated with a proper rust inhibitor. E. All screwed pipe shall be coated with Teflon tape or an approved pipe joint compound.

Coating of the threads must start at least two threads back from the pipe end. 4-2 PIPE AND FITTINGS The following provides specifications for materials normally used. This includes the use of

other materials such as brass, copper, stainless steel, flexible hose, etc. provided that they satisfy the system pressure/temperature requirements (working pressure of 3,00 psi [207 bar]). Pipe and fittings should have a minimum bursting pressure (not working pressure) of 5,000 psi (345 bar).

The project drawings will indicate the specific piping materials to be utilized for each project. As the type of piping material to be utilized are incorporated into the system flow/pressure loss design, the system designer must be contacted if materials other than those specified are used, and the designers approval must be received.

Ferrous Pipe Seamless or electric weld, black or galvanized steel pipe conforming to ASTM A-53, Grades A or B, ASTM A-106, Grades A,B or C Sizes: 1/4" through 3/4" Schedule 40 (standard) 1” through 4” Schedule 80 (extra heavy) Furnace butt weld ASTM-53 pipe, cast iron pipe, and pipe conforming to ASTM A-120 must not be used. Black pipe may be used when installed indoors and where moisture or corrosive atmospheres are not normally present. Where any portion of a piping system is outdoors or in an unheated area, that portion should be galvanized. Where galvanized pipe is used, galvanized fittings should be used.


4-2

Ferrous Fittings Threaded 1/4" through 2”: Class 300 malleable iron, ASTM A-197, or ductile iron, ASTM A-394 2 1/2" and Larger: 3,000# forged steel Class 150 and cast iron fittings must not be used.

Pipe Connections Pipe can be assembled using threaded, flanged, or welded joints as specified on the project drawings. Threaded Connections All threaded joints should have American Standard pipe threads (NPT) in accordance with ANSI B2.1. All threads should be full length and suitably reamed and chamfered. After cutting and threading, pipe should be reamed and cleaned before assembly to remove all cutting oil, lacquer, scale and cuttings, using a degreasing solution run through the pipe interior. For assembly, use pip sealant applied to male thread only. Joints should be tightened until engagement conforms to that specified for tight joints using American Standard pipe threads. Normal engagements for tight joints are:

Pipe Size Engagement1/4" 3/8"3/8" 3/8"1/2" 1/2"3/4"" 9/16"1" 11/16"

1 1/4" 11/16"1 1/2" 11/16"

2" 3/4"2 1/2" 15/16"

3" 1"3 1/2" 1 1/16"

4" 1 1/8"5" 1 1/4"6" 1 5/16"

4-3 WELDED PIPE CONNECTIONS

When making welded connections, bevel type welding fittings should be installed and all welding should be performed in accordance with Section IX, Qualification Standard for Welding and Brazing Procedures, Welders, Brazer Operators, of the ASME Boiler and Pressure Vessel Code. During welding care must be taken to ensure that weld splatter and molten metal does not enter the pipe and that any roughness that could affect flow is removed.


4-3

4-4 TUBE CONNETIONS

When using tube, compression type fittings are preferred. The pressure/temperature ratings of the manufacturer of the fitting should not be exceeded. When tube joints are soldered or brazed the melting point of the soldering metal should be at least 10,000°F.

4-5 HANGARS AND BRACING

All system piping, both vertical and horizontal, most be suitably supported with hangars conforming to the least requirements or ANSI B31.1. Pipe hangars should be capable of supporting the pipe under all conditions of operation and service. They should allow for the expansion and contraction of the piping, and should prevent pipe loads and stresses from being transmitted into connected equipment. Hangars and supports should be of rugged design and installed so that they will not be loosened by movement of the supported pipe. U-bolts with double nuts should be used. Pipes must be braced or anchored to the building structure such as beams, columns, concrete walls, etc., in order to prevent longitudinal and lateral movement and sway. Carbon dioxide piping must not be hung or supported form other piping systems (i.e. water, compressed air, etc.). Large forces are exerted on the system cylinders and piping during discharge. Each section of pipe must be braced or secured to restrict both the vertical and lateral movement. Where practical, riser piping should be supported independently of the connected horizontal piping. A support must be installed adjacent to each discharge nozzle and wherever a change in pipe direction occurs. In addition, for some regions classified as earthquake zones, or for projects such as nuclear sites subject to unique code requirements, special sway bracing and/or hangars may be required. Refer to project and/or contract drawings for requirements of special bracing. Generally, no section of pipe should be without a hanger or brace. Maximum spacing between hangars and hangar rod sizes should be indicated as shown, which are in accordance with ANSI B31.1.0.

Pipe Size Engagement Rod Size1/2" 5'3/4"" 6'1" 7'

1 1/4" 9'1 1/2" 9'

2" 10'2 1/2" 11'

3" 12'3 1/2" 13'

4" 14'5" 16'6" 17' 3/4"

Hangar Spacing

1/2"

5/8"

3/8"


4-4

Intermediate Pipe Hanger

(Trapeze)

Pipe Size Rod Size1" and smaller 3/8"1-1/4" thru 3" 1/2"

4"& 5" 5/8"6" 3/4"

Rigid Pipe Hanger (Roof and Floor)

Pipe Size "A" Angle Size U-Bolt Dia.1" thru 2" 8" 1-1/2" x 1-1/2" x 1/4" 3/8"

2-1/2" thru 4" 12" 3" x 3" x 1/4" 1/2"5" & 6" 16" 3-1/2" x 3-1/2" x 3/8" 5/8"

Figure 4-13 Typical Pipe Supports


4-5

Intermediate Pipe Hanger (Roof)

Letter 1" - 2" Pipe 2-1/2" - 4" Pipe 5" - 6" PipeA 6" 8" 10"B 10" 14" 18"C 1-1/2" 1-1/2" 1-1/2"D 3" 5" 7"E 1-3/4" 1-3/4" 1-3/4"F 13-1/4" 19-1/2" 24-3/4"

Angle Size 1-1/2" x 1-1/2" x 1/4" 3" x 3" x 1/4" 3-1/2" x 3-1/2" x 3/8"U-Bolt Dia. 3/8" 1/2" 5/8"Anchor Size 3/8" 1/2" 5/8"



4-6

Rigid Pipe Hanger (Wall)

Letter 1/2" - 3/4" Pipe 1" - 1-1/2" Pipe 1-1/2" - 2" PipeA 6" 9" 12"B 1-1/2" 3" 4"C 3" 4" 5"D 10" 14" 18"E 1-1/2" 2" 2-1/2"F 7" 10" 13"G 8-1/4" 12-3/4" 17"

Angle Size 1" x 1" x 3/16" 2" x 2" x 1/4" 3" x 3" x 3/8"U-Bolt Dia. 1/4" 3/8" 3/8"Anchor Size 1/4" 3/8" 1/2"



4-7

Rigid Pipe Hanger (Wall)

Letter 1" - 2" Pipe 2-1/2" - 4" Pipe 5" - 6" PipeA 8" 12" 16"B 12" 18" 20"C 2" 2" 2"D 7" 13" 15"E 5" 8" 11"F 9-1/4" 12-3/8" 17-1/2"

Angle Size 1-1/2" x 1-1/2" x 1/4" 3" x 3" x 1/4" 3-1/2" x 3-1/2" x 3/8"U-Bolt Dia. 3/8" 1/2" 5/8"Anchor Size 3/8" 1/2" 5/8"



4-8

Tank Capacity

(tons) Voltage Horsepower Phase Amps Fuse Wire

0.75 230 0.5 1 5.2 10 #12

1.5 230 0.5 1 5.2 10 #12

2 208/230 0.5 1 5.2 10 #12

3.75 208/230 1 1 9.8 15 #12

460 1 3 4.2 6 #12

6 208/230 1 1 9.8 15 #12

230 1 3 7.2 10 #12

460 1 3 4.2 5 #12

8 230 2 3 10.2 15 #12

460 2 3 6.2 10 #12

10 230 2 3 10.2 15 #12

460 2 3 6.2 10 #12

12 230 2 3 10.2 15 #12

460 2 3 6.2 10 #12

14 230 2 3 10.2 15 #12

460 2 3 6.2 10 #12

18 230 3 3 25.4 30 #10

460 3 3 12.5 15 #12

22 230 3 3 25.4 30 #10

460 3 3 12.5 15 #12

26 230 3 3 25.4 30 #10

460 3 3 12.5 15 #12

30 230 3 3 25.4 30 #10

460 3 3 12.5 15 #12

Consult factory for information regarding tank sizes larger than 30 tons. 4-6 EXPANSION JOINTS

A certain amount of contraction can occur, which is caused by a maximum temperature change in long continuous pipe runs. Approximately 1 inch per 100 feet of steel pipe. Often, as part of the natural layout of the system, a swing joint can serve to give the desired flexibility. In straight runs an expansion joint should be installed on the basis of one after approximately 100 feet of continuous run and after each 100 feet run thereafter.


4-9

Note: Rigid hangers should be installed at all three (3) points noted above. However, the

tension on the ‘U’ bolts supporting the pipe to the hanger must be adjusted to allow longitudinal movement on either side of the loop.

PIPE DIM DIM PIPE DIM DIM SIZE H W SIZE H W 1/2" 1'-0" 5'-6" 3" 1'-0" 20'-0" 1/2" 2'-0" 1'-6" 3" 2'-0" 10'-0" 1/2" 3'-0" 0'-6" 3" 3'-0" 5'-0" 3/4" 1'-0" 8'-6" 3" 4'-0" 1'-0" 3/4" 2'-0" 3'-0" 3" 5'-0" 0'-6" 3/4" 3'-0" 1'-0" 4" 1'-0" 21'-6" 3/4" 4'-0" 0'-6" 4" 2'-0" 11'-6" 1" 1'-0" 10'-0" 4" 3'-0" 5'-0" 1" 2'-0" 3'-6" 4" 4'-0" 2'-0" 1" 3-0" 1'-0" 4" 5'-0" 0'-9" 1" 4'-0" 0'-6" 5" 2'-0" 13'-6"

1 1/4" 1'-0" 12'-0" 5" 3'-0" 6'-6" 1 1/4" 2'-0" 5'-0" 5" 4'-0" 2'-3" 1 1/4" 3'-0" 1'-0" 5" 5'-0" 0'-9" 1 1/4" 4'-0" 0'-6" 6" 2'-0" 14'-0" 1 1/2" 1'-0" 13'-6" 6" 3'-0" 7'-6" 1 1/2" 2'-0" 6'-0" 6" 4'-0" 2'-6" 1 1/2" 3'-0" 2'-0" 6" 5'-0" 1'-0" 1 1/2" 4'-0" 0'-6" 8" 2'-0" 14'-0"

2" 1'-0" 15'-6" 8" 3'-0" 9'-6" 2" 2'-0" 7'-6" 8" 4'-0" 3'-6" 2" 3'-0" 2'-6" 8" 5'-0" 1'-6" 2" 4'-0" 0'-6"

Figure 4-10

Estimating Guide for Expansion Loops

'H'

'W'

SUPPORTS PERMITTING

ANCHOR

PLAN VIEW

LONGITUDINAL MOVEMENT(TYP 2)


4-10

4-7 CYLINDER ASSEMBLIES

Each cylinder assembly has safety features and components to ensure against accidental discharge during installation. Prior to starting work, the installer should become familiar with these features by reviewing the equipment, the appropriate data sheets, and the installation instructions. Carbon dioxide cylinders may be located inside or outside the protected space, although it is preferable to locate them outside the space. When they are installed within the space they protect, a remote manual control must be installed to ensure the system can be actuated from a safe location outside the fire area. All cylinder valves are supplied with transport plugs screwed into the discharge ports. These plugs have a small hole drilled at right angles to the axis of the discharge port, so that if accidental discharge dose occur, it will be diffused in a safe manner. In addition, the SW-50M valves have plugs to shield the vent valve and solenoid actuator ports. These plugs must be in position whenever the cylinder assemblies are not secured and/or disconnected from the discharge piping. (The SW-50M valve is initiated by depressing the pilot valve stem in either of these ports.) Actuators must only be assembled to the cylinder valve after the cylinders are secured in their brackets and connected to the discharge piping, which must be complete with nozzles, using the correct discharge bend assemblies. The cylinders should be located to provide convenient access so that they can be readily inspected and also easily removed after use for recharging. Do not install the cylinder where they will be exposed to the weather elements or the direct rays of the sun. Do not install the cylinders where temperatures of less than 0°F (-18°C) or higher than 130°F (54°C), unless otherwise specified on the project drawings. If cylinders are located in hazardous (explosion-proof) area, ensure that the cylinder solenoid control and all other components are approved for such use, and the installation of all materials is made in an approved manner. Cylinders are to be installed in normal upright position. All cylinders are provided with siphon tube.

4-8 INSTALLATION OF CYLINDERS

1. Fasten cylinder bracketing and manifold brackets securely onto a solid wall of floor or structural member using 1/2” bolts with suitable anchors. Bolts must not be anchored into plaster materials. Cylinder brackets must be absolutely secure to withstand the discharge thrust forces. Be sure that threaded rods are inserted in channel before channel is permanently mounted.

2. Fasten cylinder securely in bracketing. 3. All large carbon dioxide system cylinders are shipped with valve protection caps.

Remove protection cap from the cylinder and coat it with a light film of grease. Protection caps should be stored close to cylinders, where they will be readily available for re-installation when cylinders are disconnected from the system and/or transported for recharging.

4. With cylinders properly mounted, attach flexible discharge bends to cylinder valves,

hand tighten only. 5. Mount the header manifold using the discharge bends so that the least possible

strain is put on the connections. 6. Disconnect the flexible bend from the cylinder valve and screw, wrench tight into

manifold.


4-11

4-9 INSTALLATION OF PIPE AND FITTINGS

Generally, drawings provided schematic piping layouts showing pipe diameter, pipe fittings, and pipe lengths utilized for the design calculations. The information shown is not to be used for fabrication of pipe. The installer must verify that the pipe can be installed as indicated, and establish fabrication data based upon his inspection of the site. Changes to piping that may be necessary to suit conditions can critically affect the system flow balance. Any deviations to the piping must be approved by the designer prior to their implementation. Where reducing fittings are called for on the installation drawings, hexagon bushings of 3,000 lb. forged steel may be used. Malleable iron hexagon reducing bushings may also be used, up to 2-inch size, provided ones with the correct pressure/temperature ratings are used. Under no conditions should flush bushings or cast iron bushings be used. If two reducing fittings are required to make the necessary reduction, they should be chosen to split the reduction equally. Pipe should be reamed and cleaned before assembly, and after assembly the entire piping system should be blown out before nozzles and other devices are installed. All valves (stop and selector) not flange, should be installed with a flange joint or union immediately downstream of the valve to facilitate inspection, repair, or replacement. All pressure relief devices should be located and orientated so that the discharge od carbon dioxide will not injure personnel, damage equipment, or be otherwise objectionable. A dirt trap and blow-out, consisting of a tee with capped nipple 3 to 6 inches (76 to 152 mm) long, should be installed at the end of each pipe run. Piping through walls, floors, etc. should be run through sleeves of Schedule 40 pipe at least two sizes larger than the pipe being run and not smaller than 1 inch. Sleeves through floor slabs should extended at least 2 inches above the floor. Sleeves should be packed with fire resistant material so as to be dust and weather tight, as specified on project drawings.

4-10 INSTALLATION OF NOZZLES

1. For total flooding applications, nozzles should be located at the highest practical elevation within the enclosure. Except where more than one tier of nozzles is used, or special application conditions apply, the bottom of the orifice should not be more than 12 inches (305 mm) from the top of the enclosure. For local applications, nozzles must be located as shown on the project drawings.

2. There must not be any obstructions adjacent to the nozzles (structural columns or

beams, ducts, cable trays, racks, equipment, etc.) that will affect the discharge patterns or disbursement of the carbon dioxide.

3. Install nozzle piping at the hazard, as shown on the project drawings. Be sure to

fasten piping securely at each nozzle and change in direction of flow.

4-11 LOCAL MANUAL CONTROL

The local manual controls should not be installed on the cylinder assemblies until the cylinders have been secured into the cylinder bracket, all piping has been completed, and nozzles installed.


4-12

1. Remove the shipping plug from the vent valve port on top of the SW-50M cylinder valve.

2. Ensure that the piston in the actuator is in the retracted position, and that the hand

lever is secured with lock-pin and sealed. Then install the actuator into the vent valve port of the cylinder valve, wrench tight. (During servicing, if piston does not retract, the pressure on top of the piston must be relieved. Loosen then re-tighten the tube connector.)

If any hissing or discharge of gas is noticed during connection of the actuator, stop at once and remove the actuator for cylinder valve. Check the actuator. If no cause for discharge is found contact Tomco Fire Systems.

3. To orientate the manual lever, unscrew the locking nut 1/4 turn, rotate main body of

the actuator to the position required, then re-tighten locking nut. IMPORTANT: Do not unscrew the locking nut more than 1/4 turn.

4. If the system has two master cylinders, the actuators of the two units should be

joined together with a connecting link to enable simultaneous actuation. a) Loosen cylinders with the bracket sufficient to allow the cylinders to be rotated. b) Attach the actuators to the cylinder valves.

c) Unscrew the locking nut of each actuator 1/4" turn, sufficient for the hand levers

to be rotated.

d) Connect the hand levers of the two actuators together using a connecting link. Attach the link to the hole at the end of each lever. Rotate the cylinders and hand levers as necessary to assure a straight line movement.

Do not remove the safety lock pin from its lever during this operation, otherwise accidental discharge of cylinders might occur.

e) Tighten the locking nuts of the actuators and tighten the cylinder brackets.

5. If the manual/pressure actuator is to be used with a solenoid actuator, remove the

blank plug from the pressure port and install the 1/8” Swagelock elbow, which is supplied with solenoid actuator.

4-12 REMOTE CABLE MANUAL CONTROL

1. Install the pull box in a readily accessible location, at a safe distance from the fire

area, and preferably in the main path of egress from the area. The pull box should be

3 to 5 feet (920 to 1520 mm) above floor level.

2. Run 1/2" conduit or 3/8” standard weight galvanized steel pipe from the pull box to

the location of the actuator hand lever, and terminate with a flared-end fitting. Corner

pulleys must be installed at each change of direction of the conduit or pipe, bends or

offsets will not be accepted. The conduit or pipe must be securely fastened with pipe

straps, especially at each corner pulley.


4-13

3. Thread the cable through the handle in the pulley box until the end fitting (nipple) is

engaged.

4. Thread the cable through the conduit and around the pulleys to the cylinder. Remove

the cover from each corner pulley in order to thread the cable around the wheel.

Ensure covers are replaced wrench tight. NOTE: Check to ensure the pulley

wheels are correctly mounted in the housings and rotate freely.

5. Pull on end of cable (at cylinder end) to take up the slack. Be sure the pull handle is

properly installed in the pull box and that end fitting fits into the hole in the pull

handle.

6. Feed the cable through the hole in end of the hand lever or connecting link, and

fasten with a cable clamp. The cable should be taught but not tight. When installed,

be sure that there is at least 9 inches (230 mm) of free cable between the cable

clamp and the flared-end fitting for proper operation of the lever(s).

7. On completion of the installation, install a seal wire on the pull box and remove the

lock pin(s) from the actuator lever(s). The system is now ready for use.

4-13 SOLENOID ACTUATOR

Check the solenoid nameplate to ensure that the coil voltage agrees with the supply

voltage of the system and the site conditions.

Caution: The solenoid actuator should not be connected to cylinder until after

completion of all testing.

1. Provide a junction box located close to the cylinder valve for connection to the

electric actuating circuit.

2. On completion of all testing, connect the solenoid actuator to the adaptor at the top of

the SW-50M cylinder valve, after first confirming that there is no electric power being

applied to the solenoid, and that all o-rings are in place. A slight discharge (puff) of

carbon dioxide might occur as this connection is made.

This connection should be made as follows:

a) secure the mounting bracket square to the valve

b) connect the solenoid valve to the bracket with the screws supplied

c) attach the solenoid to the pressure connection of the cylinder valve wrench tight

d) tighten the screws holding the solenoid to the bracket.


4-14

3. Install the 3/16” hose to connect the solenoid valve exhaust port to the manual

actuator.

4-14 DISCHARGE PRESSURE SWITCH The pressure operated switch is normally located adjacent to the cylinder(s) and is

connected to the manifold or discharge piping from the cylinders.

1. Mount the switch box securely onto a wall or structural member using the mounting

holes provided. Preferred mounting is upright with pipe and conduit connections to

bottom.

2. Connect 1/2" conduit and appropriate wiring to the electrical connection on the switch

box. To reverse the normal switch contact arrangement, remove the toggle switch

assembly and reverse it in the switch box.

3. To switch loads heavier than the switch rating, or requiring more than two contacts,

the switch should be used to operate a relay or contractor to control the load.

4. Connect the 1/4" NPT connection at the bottom of the front plate to the carbon

dioxide piping using 1/4" steel pipe or 1/4" or 3/16” O.D. copper tube. Install a union

fitting at base of cover to allow removal of front plate for testing.

4-15 PRESSURE RELEASE TRIP The pressure release trip is used to release loads of up to a maximum of 75 lbs (34 kg),

which are hung on the piston stem.

1. Mount the pressure release trip onto a solid structural member using 5/16” bolts and

appropriate anchors. Fixing must be suitable for the loading, including spring tension

and/or dead weight of operated equipment.

2. Connect the release trip’s 1/4" NPT connection to the carbon dioxide discharge

piping using 1/4" steel pipe or 1/4" or 3/16” O.D. copper tube.

3. Using 1/16-inch stainless steel cable and cable clamp (or equivalent), connect the

equipment to be operated to the piston stem. The cable must be suspended at right

angles to the piston stem in order to neither bind nor slide off the stem.

4-16 SYSTEM VERIFICATION AND TESTING

Prior to placing the completed system in service, the installation should be inspected and

tested to confirm:

1. Conformance to system design.

2. Suitability of piping, its correctness to project design, and its support and bracketing.

3. Conformance to the required system operating sequence.


4-15

4. The suitability of the hazard environmental control, safety precautions, sealing, etc.

5. Compliance with the requirements of NFPA 12: Standard on Carbon Dioxide

Extinguishing Systems and/or other applicable standard.

If there is any doubt of the ability of the system to operate and provide the necessary

protection, a full discharge test should be considered. A discharge test will verify the total

system operation, check the agent concentration achieved, determine the duration

(soaking time) that the concentration is retained, check acceptability of nozzle discharge,

check audibility and/or visibility of alarms, ensure interlocks and all auxiliary equipment

operate as required, and allow personnel to become completely familiar with the

discharging system and to practice response.

If a full discharge test is not performed, a puff test, using a minimum of one cylinder, must be conducted. A full discharge test must be conducted for all Extended Discharge type systems.

4-16.1 DESIGN

Measure the room and calculate the actual room volume. Check actual volume against

design volume (volume shown on project drawings) and ensure correct quantity of carbon

dioxide is provided.

4-16.2 PIPING

Check the pipe layout to ensure it agrees with the system layout drawings.

Inspect the piping supports and ensure that the pipe is secure and restrained so that

unacceptable movement will not occur.

After the installation of the system piping is completed, and prior to the connection of the

cylinders, nozzles and other equipment, the discharge piping should be blown out and

then pressure tested for leakage. Plug or cap all piping outlets and apply 100 psi (7 bar)

pressure with dry nitrogen or dry air for 10 minutes. At the end of 10 minutes, the

pressure loss should not be greater than 5 psi (0.35 bar). When pressurizing piping, the

pressure should be increased in 50 psi (3.5 bar) increments.

Caution: Pneumatic pressure testing creates a potential risk of injury to

personnel in the area as a result of airborne projectiles if piping should

rupture. Prior to conducting the pneumatic pressure test, the protected

area must be evacuated and appropriate safeguards must be provided

for test personnel and for equipment in the area.

4-16.3 CYLINDERS

1. Inspect cylinders and ensure bracketing and cylinders are secure.


4-16

2. Verify the weight of carbon dioxide in all cylinders, using either an accurate weigh

scale or an approved liquid level gauge. The contents should be within +/-10% of the

normal capacity.

3. Check cylinder discharge bends and check valves for proper connection and

tightness.

4. Ensure that appropriate identification, operating and warning signs are mounted or

posted.

4-16.4 NOZZLES

Each nozzle has an orifice drilled to suit the specific location and discharge flow

requirements. The orifice identification number is stamped on each nozzle.

1. Verify that orifice sizes are as indicated on the project drawings and that the nozzles

are orientated to discharge correctly.

Caution: Ensure discharge will not splash flammable liquids or create dust

clouds that could extend the fire. Also, ensure the discharging agent

will not injure personnel in the area.

2. Ensure that each nozzle pipe drop is bracketed or braced against the nozzle

discharge thrust, and that the nozzle cannot swivel on its pipe fitting.

3. Check the cleanliness of the protected area to determine if protective caps or seals

are required to prevent orifices from clogging.

4-16.5 MANUAL CONTROL: LOCAL AND REMOTE CABLE TYPE

Ensure the manual actuators and the remote manual controls, for all parts of the

system – master cylinders for main and reserve systems, all master cylinders in a joint

system, and selector and stop valves – are accurately identified and will be accessible

during a fire.

All testing should be carried out with the manual actuator(s) disconnected from the

cylinders, and other devices.

1. With the manual actuator disconnected from the cylinder or other device, pull the lock

pin and operate the lever to verify the movement of the operating piston 1/8” (3.2

mm).

2. If a cable type remote control is used, pull the handle in the pull box and check the

pull, force and length of pull required. Also ensure that there is at least 9 inches (229

mm) of clear movement at the actuator lever.


4-17

Note: Manual controls should not require a pull of more than 40 lbs (178 Newtons),

nor a movement of more than 14 inches (356 mm) for system operation.

3. Check to ensure that the cable runs free and that there is no binding of cable in the

corner pulleys and conduit, and that the corner pulleys and conduit are securely

fixed.

4. Reset the pull box and affix a lead and wire, or similar, seal. Ensure a lock pin is

installed in the manual actuator and that the stem is retracted before reconnecting

the actuator to the cylinder valve or other device. (This will prevent operation of the

cylinder while actuator is being installed.) If a remote manual control is not used,

secure the lock pin in the actuator with a lead and wire seal. If a remote manual

control is used, the actuator lock-pin must be removed after installation before

system is placed in service.

4-16.6 ELETRIC ACTUATOR

Perform all inspections and tests on the control panel, detectors, signals and other

devices as specifically indicated in the specific equipment manufacturer’s manuals.

Note: The solenoid actuator and the manual actuator must be removed from the

cylinder valve before any testing is performed.

1. Ensure the solenoid actuator is of the correct voltage for the service.

2. Connect the 3/16” hose (supplied) to the respective solenoid valve and manual

actuator. Apply dry nitrogen pressure of 100 psi (7 bar) or dry, clean air pressure to

the inlet port of the solenoid valve (cylinder connection port).

3. Apply the appropriate voltage to the solenoid by actuating a manual station or firing a

detector to operate the discharge circuit. Note: Do not operate fixed thermal detectors

unless they are of the restorable type. The solenoid should operate, which will be

indicated by the movement of the piston stem in the manual actuator. Also there will

be an escape of nitrogen from the small vent hole in the side of the manual actuator.

4. Remove electric power from the solenoid. The solenoid valve should close, indicated

by the cessation of nitrogen discharge, and the return of the piston stem in the

manual actuator to its normal standby position. Check for leakage at the vent hole.

5. Shut off the pressure supply, and exhaust the line pressure using the exhaust valve

which should be part of the pressurizing equipment.

6. After all testing has been completed satisfactorily, remove the 3/16” hose, re-install

all actuators to the cylinder valves, and ensure all electrical connections, including

ground connections, are in order. Replace the 3/16” hose, taking care to ensure the

pressure connections are gas tight.


4-18

4-16.7 OPTIONAL DEVICES

1. Gas Operated Sirens. Disconnect the siren from the discharge piping and connect to

a small carbon dioxide cylinder. Operate the carbon dioxide cylinder and ensure all

sirens operate and that the sound is readily heard throughout the protected space.

This should be done under normal background noise conditions.

2. Pressure Operated Switches. To test the circuits and to ensure auxiliary functions

operate correctly, either:

a) Disconnect the union at the pressure connection

b) Insert a small rod into the pressure connection of the cover plate and push

against the piston to trip the switch.

c) Push plunger down to reset switch. OR...

d) Remove the four cover screws and swing cover away from switch box. Manually

operate interior toggle switch. After testing, ensure toggle is returned to normal

stand-by position, then reinstall cover plate.

3. Pressure Release Trip. With a screw driver or other blunt instrument manually push

the stem to the retracted position. Allow the cable to fall, and ensure the connected

equipment operates as required.

4-16.8 CARBON DIOXIDE PUFF TEST

The purpose of this test is to check the integrity of the piping system and to ensure the

pipes are not blocked. It will not check the concentration of carbon dioxide that will be

obtained under a full discharge conditions, or check the integrity (tightness) of the

enclosure.

1. Disconnect all cylinders, except one master cylinder from the system.

2. Operate the remaining master cylinder and ensure carbon dioxide does discharge

from all nozzles.

3. Ensure that there is no undue pipe movement.

4. Ensure all pressure-operated devices operate and that the connected equipment,

alarms and other functions are controlled as required.

4-16.9 CARBON DIOXIDE DISCHARGE TEST

A full discharge test should be performed when there are doubts about the operation of

the system, when any inspection indicates their advisability, and for all extended


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discharge type systems. It is recommended that a full discharge test be performed

whenever cylinders are removed for hydrostatic testing.

During this test :

1. Make checks as indicated under the Puff Test.

2. With a concentration meter, check the carbon dioxide concentrations achieved at

several locations within the enclosure, and specifically adjacent to the primary hazard

within the enclosure.

3. Check the discharge time.

4. Check the holding time, the length of time the carbon dioxide concentration is

maintained.

5. Ensure that the enclosure is reasonably well sealed, and that there is no major

leakage.

6. Ensure all alarms function for the required period of time and that they can be heard

and/or seen throughout the area. This should be done under normal area operating

conditions, i.e. normal background noise and lighting, etc.

Tomco2 Fire Systems Operation And Service 8/16/10 Rev. 0

SECTION 5

OPERATION AND SERVICE

Table of Contents Paragraph Subject 5-1 General 5-2 System Activation 5-3 Recharging 5-4 System Maintenance 5-5 Cylinder Recharge Manual 5-6 CO2 Pressure/ Temperature Curve

Tomco2 Fire Systems Operation and Service 8/16/10 Rev. 0

5-1

SECTION 5

OPERATION AND SERVICE 5-1 GENERAL

A. Operation and service procedures in this section are provided as a guide for identifying and correcting systems faults. The use of these procedures by competent personnel will reduce system down time and minimize unnecessary costs. Troubleshooting tables are provided for identifying and isolating system/component faults.

B. The CO2 system shall be maintained in full operating condition at all times. Use,

impairment and restoration of this protection shall be promptly reported to the authority having jurisdiction.

5-1.1 Inspection and Testing

All carbon dioxide systems shall be thoroughly inspected and tested for proper operation by competent personnel.

5-2 SYSTEM ACTIVATION

1. Notify your local fire department.

2. Do not open doors or windows, or remove the carbon dioxide from the protected area

until the fire is completely out.

3. Do not enter the area until the carbon dioxide has been removed and the area

ventilated. If it is necessary to enter the area while it still contains carbon dioxide, self-

contained breathing apparatus should be used.

In general, providing the system discharges during the early stages of the fire, and

providing all plant shut-down functions are operated and safety precautions are taken, the

fire should be extinguished within one minute of the end of carbon dioxide discharge.

However, the area should be kept closed for at least fifteen minutes following discharge to

allow the area to cool, and to prevent re-ignition. For deep-seated hazards, the space

should be kept tightly closed for at least sixty minutes following discharge.

To check if fire is out:

1. Look for smoke and steam coming from cracks around doors, windows, vents, etc.

2. Feel the doors and walls. If they are hot do not open doors, the fire is still burning or is

in the cooling stage.

3. Listen for crackling sounds.

Have your fire department check the space for you.


5-2

Do not enter area with a lighted cigarette or open flame as flammable vapors may be

present which could cause re-ignition or an explosion.

After opening the door:

1. Completely ventilate the space. CO2 is heavier than air and will drift into low level

spaces (e.g. rooms below grade). Use fans to remove CO2, smoke and fumes from low

areas.

2. Clean-up residue from fire.

3. Determine cause of fire and take corrective action.

5-3 RECHARGING THE SYSTEM

Have the system completely serviced by an Tomco Fire Systems approved service agency.

After operation, the system should be recharged without delay in order to maintain

protection.

1. Remove, inspect and recharge all cylinders.

2. Inspect the piping system and ensure pipe supports are still secure.

3. Inspect all components, including nozzles, switches, detectors, alarms, etc. Replace

all equipment that has been damaged, or that has been exposed to direct flame or

excessive heat from the fire.

4. Reinstall system in accordance with the Installation Instructions.

5. Verify and test system in accordance with this manual and Section 4.8 of NFPA 12.

6. Check the hydrostatic test date on cylinders and flex hose. If more than 5 years have

elapsed from the date of last test, the cylinders will require hydrostatic testing.

5-4 SYSTEM MAINTENANCE

In order to ensure that the system has not been tampered with and is in a fully

operational condition, it must be inspected and tested on a regular basis by trained,

competent, service personnel. In accordance with NFPA 12: Standard on Carbon Dioxide

Extinguishing Systems, insurance and other code requirements, all carbon dioxide systems

should be thoroughly inspected and tested annually. It is recommended that a service and

maintenance contract be established with a Tomco Fire Systems approved service agency.

All persons who may be expected to inspect, test, maintain, or operate carbon dioxide fire

suppression systems should be thoroughly trained, and be kept thoroughly trained, in the

functions they are expected to perform.


5-3

5-4.1 Monthly Inspections

1. Check system components for mechanical damage and tampering. All system lead

and wire seals, or similar, should be intact.

2. Ensure that there are no obstructions that would prevent system operation, or prevent

proper distribution of carbon dioxide from discharge nozzles.

3. Verify that egress is clear to allow safe evacuation of personnel from the hazard area,

and safe access to the manual controls.

2. Check that all electrical circuits show normal. If a control panel is utilized, power lamp is

on and all other lamps are off.

5-4.2 Semi Annual Inspections

1. Perform all the monthly inspections.

2. Check if there have been any changes in the shape, size, contents or use of the

protected space. Any changes will necessitate a review of the system design.

3. Check the cylinder contents (weight), this may be done by using a platform or beam

scale or an approved liquid level gauge. Record weight on the cylinder tag or in the log

book. If the cylinder has a loss in net weight of more than 10 percent, it should be

recharged or replaced. The cylinder full weight is indicated on the valve.

Check the date of the last hydrostatic test. If more than 12 years have elapsed since the

last test, the cylinders should be discharged and retested before being returned to service.

(It is recommended that a full discharge test be performed when cylinders are emptied for

hydrostatic testing.)

4. Examine cylinders, piping and nozzles for any evidence of corrosion or other physical

damage.

5. Check cylinder bracketing, piping, pipe hangers and straps to ensure all are secure

and suitably supported. This is particularly important where shock and vibration are

encountered as a normal part of the environment (e.g. on board ships, etc.).

6. Ensure discharge nozzles are still located as originally installed, that the nozzle

discharge orifices are clear and unobstructed, and that the nozzles are properly

positioned and aligned. Ensure seals are used where necessary.

7. Remove the manual actuators from all cylinders that they operate and operate the

hand lever. The actuator should operate freely and the operating stem should travel 1/8-

inch (3.2 mm).


5-4

Caution: When two actuators are connected together, both actuators must be

removed from the equipment they control, before testing.

8. If a remote manual cable control is used, ensure the actuators are removed from the

equipment they control, and operate all cable controls by the pulling cable at the pull

box to ensure freedom of movement and travel. Both main and reserve actuator cables

should be operated, if used. Check the condition of conduit and corner pulleys.

9. Inspect and clean all fire detectors. Check the sensitivity and adjust smoke detectors.

10. If the system is automatically electrically actuated, disconnect the solenoid actuators

and manual actuators from the cylinder valves, then:

a) Operate all electric Initiating devices (detectors, manual stations, etc.), one at a

time, and ensure the respective actuators operate. There will be a click sound

when the solenoid operates. This check should be made for both main and reserve

banks of cylinders, if used. Reinstall the solenoid and manual actuators after all

testing is completed.

Alternatively, unplug the cable connectors from all solenoid valves and insert light

bulbs In the cable connectors. The bulbs will light when each circuit is energized.

Also, the operating stem of the manual actuator should travel down 1/8-inch (3.2

mm).

b) Verify that all electric alarm signals function, and that all audible devices can be

heard and all Illuminated devices can be seen throughout the protected space.

This should be done in the normal working environment with normal background

noises and lighting in place.

c) If the system has an extinguishment control panel, refer to the panel

manufacturer’s instruction manual for maintenance procedures.

11. Confirm operation of all auxiliary and supplementary components such as time delays,

pressure operated switches, release trips, damper releases, shut-off valves, etc. by

manual operation, where possible. Pressure operated time delays and gas operated

sirens should be checked using a carbon dioxide portable extinguisher as a

pressurizing source.

Ensure all equipment is reset and all components are installed and left in the normal

Standby condition on completion of testing.

Documents

HPCO2 Engineering Manual