21 13 39 – FOAM WATER SYSTEMS
CONE ROOF TANKS - DELUGE FOAM CHAMBER SYSTEMS
Specifier Notes: This product guide specification is written according to the Construction Specifications Institute (CSI) 3-Part Format, including MasterFormat, SectionFormat, and PageFormat, as described in The Project Resource Manual—CSI Manual of Practice, Fifth Edition.This section must be carefully reviewed and edited by the Architect to meet the requirements of the project and local building code. Coordinate this section with other specification sections and the Drawings. Delete all “Specifier Notes” after editing this section.
SECTION 21 13 00 – Fire-sUPPRESSION sPRINKLER sYSTEMS21 13 39 – FOAM WATER SYSTEMS
CONE ROOF TANKS - DELUGE FOAM CHAMBER SYSTEMS
1. GENERAL
1.1 WORK INCLUDED
This section describes the design and installation of the new [and modified] portions of the Fire Protection System and a new Foam Fire Protection System for the ______. The design flow rate shall be based on the information indicated on the drawings and this specification. The [modified and] new portions of the fire protection system shall be in accordance with NFPA 11 and as required by the Owner’s insurance carrier ______and the local fire protection authority having jurisdiction. The Contractor is responsible for designing, furnishing, and installing all Fire Protection services, including but not limited to, piping, wiring, equipment and devices as required for a complete, approved, and functioning system.
1.1.1The Contractor shall provide a deluge foam-water foam chamber system for the ______cone roof fuel storage tanks. Include all detectors, switches, alarms, wiring, and controls.
1.1.2The Contractor shall hydraulically calculate and size all Fire Protection equipment, piping and devices to ensure adequate flow to all system components. The Contractor shall use the latest flow test data available from the Owner to use as the basis of his hydraulic calculations.
1.2 RELATED WORK [modify as required – see footer]
Drawings and general provisions of Contract, including General and Supplementary conditions and Specification sections, apply to work of this section. The _ drawings and the _ drawings describe the fire protection requirements. The Contractor shall also coordinate with other trades’ drawings and contractors.
A. Documents in Division 00 - Procurement Requirements apply to the work of this Section.
B. Sections in Division 01 - General Requirements apply to the work of this Section.
C. Sectionsin Division 21 – Fire Suppression
D. Sections in Division 26 – Electrical
1.3 SYSTEM DESCRIPTION
A. Design Reliability:
The designer of the fire protection systems shall meet one of the requirements below.
1.A registered Professional Engineer.
2.National Institute for Certification in Engineering Technologies (NICET) Level III in Automatic Sprinkler Layout. Copies of the designer's certificate from NICET shall be submitted along with the drawings for approval.
3.The Contractor is responsible for the design and installation of the fire protection system, including support, in accordance with these specifications and the contract drawings. The Contractor shall coordinate with architectural, civil, mechanical, and electrical, design and construction documents, to ascertain the required information. The Contractor shall coordinate with the other discipline drawings and respective Contractors to ensure a properly designed fire protection system for the building construction and occupancy classification.
B. Codes and Standards
The Contractor shall install the fire protection systems in accordance with the latest editions of the following Standards:
NFPA 11Standard for Low-, Medium-, High-Expansion Foam
NFPA 13Installation of Sprinkler Systems
NFPA 24Installation of Private Fire Service Mains and Their Appurtenances
NFPA 70National Electric Code
NFPA 72National Fire Alarm Code
NFPA 101Life Safety Code
National Electric Manufacturers Association (NEMA) Publication
Enclosures for Industrial Controls and Systems
Underwriters Laboratory, Inc. (UL) Publication – Fire Protection Equipment Directory
Factory Mutual (FM) Global requirements, if applicable to this project.
C. Materials and Equipment
All equipment and devices shall be of a make and type listed by UL or approved by FM, or other nationally recognized testing laboratory for the specific purpose for which it is intended.
The Contractor shall provide fire protection products in accordance with UL standards; provide UL label on each product.
If applicable to this project, the Contractor shall provide fire protection products and installations in accordance with FM standards.
All products shall be listed for fire protection service.
The fire protection systems shall be in conformance with all Federal, State, and Local requirements.
1.4SUBMITTALS
Submit under provisions of Section 01 33 00 – Submittals.
Product Data: Submit manufacturer’s product data, including type, model, and physical dimensions.
All literature and instructions provided by the manufacturer of all installed equipment and devices describing proper operation, maintenance, and safety requirements.
Piping layout drawings, electrical interface schematics, hydraulic calculations, and Contract Drawings shall be submitted to and approved by the owner’s insurance carrier and the local fire protection authority prior to installation.
Contractor shall provide certification indicating that the system is installed in compliance with the applicable codes.
Contractor shall provide verification that the appropriate acceptance tests have been conducted in accordance with the local fire protection authority and the applicable codes.
1.5 CONDUIT
Conduit shall be in accordance with the National Electrical Code (NEC, local and state requirements).
Conduit shall not exceed 40 percent of interior cross-sectional area where three or more cables are contained within a single conduit.
Cable must be separated from any open conductors of power or Class 1 circuits, and shall not be placed in any conduit, junction box, or raceway containing these conductors, as per NEC Article 760-29.
1.6WIRE
All fire alarm system wiring shall be new.
Wiring shall be in accordance with local, state, and national codes (e.g., NEC Article 760). Number and size of conductors shall be as recommended by the fire alarm system manufacturer, but not less than 18 AWG for initiating device circuits and 14 AWG for notification device circuits.
All wire and cable shall be listed and/or approved by a recognized testing agency for use with a protective signaling (fire alarm) system.
1.7 DELUGE FOAM CHAMBER SYSTEM DESIGN CRITERIA
1.7.1Provide a deluge foam chamber fire protection system for the ______cone roof fuel storage tank(s) as shown on Drawing ______.
(NOTE - Generally tanks of less than 20’ diameter will be protected by handlines, monitors, or dike only protection in accordance with NFPA 11 and AHJ approval)
1.7.2The system shall include all accessories as are necessary for a complete and operational system. The foam-water system shall include but not be limited to the foam concentrate, foam bladder tank, foam proportioner, foam chambers, fire cross main, deluge valve, control panel(s), associated wiring, piping and fittings, and all accessories necessary for a complete and operational system.
1.7.3Design of the foam-water system shall be by hydraulic calculations for uniform distribution of foam solution over the protected area and shall conform to the NFPA standards listed above and to the requirements specified herein.
1.7.4Foam Concentrate
The foam concentrate shall be UL Listed and/or FM Approved for use on hydrocarbon fuels.
The foam concentrate shall be ANSULITE® 3% AFFF. When hydrocarbon and polar solvents fuels or just polar solvent fuels are present the foam concentrate shall be ANSULITE® 3x3 Low Viscosity Alcohol-Resistant AR-AFFF Concentrate.
1.7.5Distribution of Foam Solution
Distribution shall be essentially uniform throughout the area. Variation in discharge from individual foam chambershall be between 100 and 120 percent of the specified density.
1.7.6Duration of Foam Discharge
System shall apply 3% foam solution for a minimum of 30minute duration for hydrocarbon products with flash point between 100 F and 200 F (37.8° C and 93.0° C).
For hydrocarbon products including crude oil with flash points below 100 F (37.8° C), the minimum discharge duration shall be 55 minutes.
For polar solvent/water soluble liquids, the minimum discharge duration shall be 55 minutes.
Duration for supplemental foam hose streams shall per NFPA 11, based upon the largest diameter tank in tank farm being protected.
1.7.7Discharge Area
Area shall be based upon the surface area of the tank(s) being protected.
[NOTE - Most systems with multiple tanks or hazards will be designed to accommodate the hazard with the largest demand as approved by the AHJ. All areas must be individually calculated for water supply requirements as well as foam agent requirements.]
[Caution: Foam systems may have different discharge time requirements based on the exact hazard and type of discharge device, thus the highest water demand area may not have the highest agent requirement.]
1.7.8 Solution Application Density
System shall be sized to provide the specified density when the system is discharging the specified total maximum required flow. Application to the tank area shall be a minimum of 0.10 gpm /ft² (4.1 Lpm/m²) for hydrocarbon liquids. For polar solvent/water soluble liquids, consult the UL directory under file GFGV.EX3933 for ANSULITE® 3X3 Low Viscosity Concentrate (A334-LV) application rates.
System shall also include supplemental foam hose streams. The number of hose streams is based upon the largest diameter tank in tank farm being protected per NFPA 11. Each foam hose stream to be a minimum of 50 gpm (189 Lpm).
1.7.9Friction Losses
Calculated losses in pipe shall be in accordance with the Hazen-Williams formula with “C” value of 120 for galvanized steel pipe.
1.7.10Location and Number of Foam Chambers
Location and number of foam chambers is based upon tank diameter per NFPA 11. The spacing of the foam chambers shall be to provide uniform foam distribution to the tank surface area.
1.7.11Drainage
Each riser shall be arranged so that it can be drained entirely after system use.
1.8The foam fire protection system shall be automatically activated when signal is received from remote manual pull station or other fire detection as required by AHJ.
1.8.1Upon activation the following shall immediately occur:
1.8.2Activation of the deluge valve to send foam solution to the fire protection piping that feeds the affected tank farm area. Individual valves located outside of dike for affected tank may have to be opened manually or automatically subject to site emergency response plan and AHJ approval.
1.8.3An alarm shall be sent to the local fire alarm system.
1.8.4Audible and visual alarms shall sound and light locally and on the Foam Fire Protection System control panel.
2. PRODUCTS
2.1 ACCEPTABLE MANUFACTURERS
A. ANSUL (a brand of Johnson Controls), One Stanton St., Marinette, WI 54143, Tel: 715-735-7415, (Toll Free) Tel: 800-862-6785,
B. CHEMGUARD (a brand of Johnson Controls), One Stanton St., Marinette, WI 54143, Tel: 817-473-9964,
C. TYCO (a brand of Johnson Controls), 1400 Pennbrook Parkway, Lansdale, PA 19446, Tel: 215-362-0700, (Toll Free) Tel: 800-558-5236, Fax: 800-877-1295,
D. Johnson Controls,1400 Pennbrook Parkway,Lansdale, PA 19446, Tel: 215-362-0700, (Toll Free) Tel: 800-558-5236,Fax: 800-877-1295,
E. Proposed substitutions of other manufacturers not listed in these specifications must comply with provisions of Sections 00 43 25 and 01 25 00. Contractor D. For substitutions of other manufacturers not listed in specifications, comply with provisions of Sections 00 43 25 and 01 25 00. Contractor must submit Substitution Request Form. All substitutions must be pre-approved.
2.1.1All equipment and components shall be new, and the manufacturer’s current model.
2.1.2All equipment and components shall be installed in strict compliance with manufacturer’s recommendations.
2.1.3All equipment shall be attached to walls and ceiling/floor assemblies and shall be held firmly in place. Fasteners and supports shall be adequate to support the required load.
2.2Foam Chamber(s)
Foam chamber(s) shall consist of a foam expansion chamber and an integral foam maker and orifice plate. The foam chamber shall be of steel construction with red corrosion resistant “CR” finish. The discharge outlet shall be of the flat face designed that may be bolted or welded to the storage tank. For ease of access to the vapor seal, the chamber body shall contain a hinged inspection hatch secured with stainless steel captive bolts. The hatch shall also contain a lifting handle designed to support the weight of the chamber for hoisting.The foam maker shall contain a stainless steel screen that is cylindrically shaped to conform to the air inlet surface to help prevent damage. The vapor seal shall be of Teflon construction to allow unrestricted flow. The Teflon vapor seal shall be designed of a thickness to meet the UL required burst pressure range of 10 to 25 psi (0.7 to 1.7 bar). The vapor seal retaining ring shall be designed with slotted keyholes to eliminate bolt removal during replacement. The inlet foam maker shall be a raised face flange with an orifice sized to allow the required solution flow at the available pressure.A stainless steel nameplate shall be attached to the foam chamber hatch. The plate shall specify manufacturer, model number, and part number.Foam chamber shall be______(ANSUL® AFC-90, AFC-170, AFC-330, or AFC-550) as required.
A foam ______(split or shallow) deflector shall be included with each foam chamber and mounted inside of the tank to redirect foam solution to the shell wall as required by the Type II discharge device design application rates.(The use of shallow deflector requires tank entry for mounting)
Foam chamber mounting pad shall be included with the assembly when required. (Recommended if tank welding or entry is not possible)
2.3Systems Water or Solution Valves
Systems valves shall be in accordance with NFPA 11 (Section 4.7.6).
2.4Deluge Valves
Valves shall be operated by a detection and control system listed for the releasing service. The deluge valve shall be provided with electrical solenoids compatible with the voltage and current supplied by the control panel. If 6 in. valves are used in larger risers, provide smoothly tapered fittings. In addition to the automatic operation, arrange each valve for manual hydraulic release at the valve. Provide pressure gauges and the other appurtenances at the deluge valve. The Deluge Valve shall be TYCO Model DV-5 with associated trim or approved equal. Where system pressures could exceed listed operating pressures the TYCO Pressure Regulating Model DV-5 Deluge Valve shall be used.
2.5Hydraulic Concentrate Control Valve
The hydraulic concentrate control valve shall be a UL Listed and/or FM Approved assembly that is factory assembled and tested. It shall include a threaded bronze body ball valve with mounting kit for securely attaching the hydraulic actuator to ball valve. The ball valve shall be designed for a minimum 400 psi (27.6 bar) WOG. The valve shall be fitted with a stainless steel ball, stem, and packing nut. Valve seats shall be of glass reinforced TEFLON™ material. The Stainless Steel Hydraulic Actuator must be approved by the manufacturer for using water as the medium to operate the actuator. The actuator shall have a position indicator and have the capability for manual override. The actuator shall be designed to operate the valve with a minimum of 30 psi (2.1 bar) water pressure and shall contain no external moving parts which could cause fouling of adjacent equipment, injury to personnel, misalignment problems common to external linkage systems, or potential for disengagement caused by tampering.
The valve(s) shall be an ANSUL Part No. ______.
2.6Foam Concentrate
Foam concentrate shall be a UL Listed and/or FM Approved ______[AFFF or AR-AFFF] for 3% proportioning for use on ______[hydrocarbon or (and/or) polar solvents liquids]. Contractor shall supply sufficient concentrate to fill the tank(s) and for testing of the foam system.
The foam concentrate shall be ANSULITE AR-AFFF 3X3 Low Viscosity (A334-LV) Concentrate for hydrocarbons and polar solvents. (ANSULITE 3% AFFF AFC3B is acceptable provided no polar solvents or fuels with more than 10% oxygenated additives by volume are protected)
Foam concentrate quantity shall be based upon the requirement for the largest and/or most severe hazard.
2.7 Foam Concentrate Storage Tank
Tank(s) shall be designed for storage of foam concentrate at atmospheric pressure and shall be of vertical, cylindrical, high-density cross-linked polyethylene construction. Tank shall be equipped with the following: valved drain/fill connection, foam concentrate pump suction and return connections, inspection hatch, and pressure/vacuum vent valve. The tank shall be semi-translucent to allow visual indication of concentrate level in tank. The foam concentrate shall have a minimum ______gal (______L) capacity to provide sufficient foam concentrate for the time specified when the system is discharging foam solution at total maximum system flow.
[NOTE - The Authority having jurisdiction shall advise on means of providing reserve supply of foam concentrate. NFPA 11 requires reserve supplies to be available for tank recharge within 24 hours. Many AHJ’s may require use of reserve tank in equal capacity to main tank especially when owners cannot afford plant shut down while waiting on reserve foam delivery.]
2.8 Foam Concentrate Pump
Pump(s) shall be a positive displacement type constructed of materials compatible with manufacturer's foam concentrate. The pump(s) shall be rated for a minimum ______gpm (______Lpm) at ______psi (______bar) using the type of foam concentrate as specified. Each pump shall be furnished with a pressure safety relief valve sized appropriately to the rated pump capacity. Pump shall be mounted on a carbon steel base and shall have guards over all couplings. Concentrate pump shall be electric motor TEFC drive.
__ phase, ___ Hertz, ____ Volts AC.
Note: If foam concentrate lines from the foam concentrate pump(s) to the IBP's are run underground or where they run above ground for more than 50 ft (15.2 m), a foam jockey pump and controller may be required.
2.9 Pump Controller
The foam concentrate pumps shall operate automatically and shall be controlled by a listed or approved full service across-the-line type foam pump controller with minimum 3R enclosure. Controllers shall be installed as per power supply requirements of NFPA 20.
2.10 Pressure Control Valve
The pressure control valve (returning excess foam concentrate back to the storage tank) shall be a pressure-sustaining, back pressure, hydraulically operated, pilot-controlled, modulating type arranged to maintain constant upstream pressure in the foam concentrate piping as the flow rate varies. Valve shall be sized to pass the full foam concentrate pump output through it. Materials of construction shall be compatible with the foam concentrate type.