Fire Pump presentation

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Fire Pumps 101Fire Pumps 101

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PurposePurpose

• This session will cover basic pumpdesign and pump application, reviewbasic fire pump room design, andreview NFPA 20 including new changesin 2003 along with existing codeinformation.

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Types of Fire PumpsTypes of Fire Pumps

Split Case Fire Pumps Inline Fire Pumps Vertical Turbine Fire Pumps

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Split Case Fire PumpSplit Case Fire Pump

ModelsModels

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Removable TopCasing Half

Lower Casing Half,Base Mounted,with Discharge andSuction FlangedConnections

Split Case Fire PumpSplit Case Fire PumpSplit-Case Design simplifies maintenance and

repair.

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Split Case Design FeaturesSplit Case Design Features

Bypass lines to stuffing box are withincastings (except 490 series)

Integrally cast bearing arms (except 490series)

Oversized shafts

Line boring of assembled casings

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Split Case Design FeaturesSplit Case Design Features•Computer controlledmachining

•Line boring of assembledcasings

•Oversized shafts

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Split Case BenefitsSplit Case Benefits

• Ease of Installation andMaintenance

• Longevity and Durability• Serviceability• Reliability

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Split Case ApplicationsSplit Case Applications

Electric Split Case

• Capacities from 250 to 5000 GPM• Warehouse• Hospital• Manufacturing plant• University or large school• Office High Rise

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Diesel Fire Pumps• Remote field locations that do not

have electricity• Hospitals 100%

back up

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Vertical Split Case

• Capacities to 2500 GPM

• Space Savings, Retrofits

• Good Specification Item!

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Vertical In-Line Fire PumpsVertical In-Line Fire Pumps

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Vertical In-Line Fire PumpsVertical In-Line Fire Pumps

Computer controlled machining

Back pull-out feature

No base, coupling, or guard

Self-venting

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In-LineFire PumpCutaway

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Vertical In-Line BenefitsVertical In-Line Benefits

Requires less space than split casepump of the same capacity

Less expensive

Motor can be serviced withoutdisconnecting suction & dischargeflanges from piping

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Vertical In-Line ApplicationsVertical In-Line Applications

Capacities to 1500 GPM

Small schools

Churches

Parking garages

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Vertical TurbineVertical Turbine

Fire PumpsFire Pumps

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Vertical Turbine DesignVertical Turbine Design

FeaturesFeatures No priming Adaptability to water

level Adaptability to various

driver combinations Compact “footprint” No alignment necessary Minimal maintenance

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FirePumps

VerticalTurbine

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Vertical Turbine ApplicationsVertical Turbine Applications

Vertical TurbinesApplications where city water

is not availablePonds and lakes to utilize

water supplyOnly pump approved for

suction lift conditions

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Jockey PumpsJockey Pumps

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PurposePurpose

The jockey pump or pressure maintenance pumpis intended to maintain the system pressure only.It is generally sized about 1% of the flow of themain fire pump. The jockey pump prevents themain fire pump from starting when small leaksfor packing drips occur throughout a system.The set pressure is generally 15 to 20 PSI abovethat of the main fire pump.

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Jockey PumpsJockey Pumps

Regenerative Turbine Pumps

Vertical Multi-stage

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Fire Pump SystemFire Pump System

ComponentsComponentsElectric Fire Pumps

• Pump, base, coupling & guard• Electric motor• Controller - motor• Suction and discharge gauges• Automatic air release valve• Casing relief valve

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Fire Pump SystemFire Pump System

ComponentsComponentsDiesel Fire Pumps

• Pump, base, coupling & guard• Diesel engine & fuel tank• Controller - engine• Suction and discharge gauges• Automatic air release valve• Batteries, racks & cables• Cooling loop• Commercial grade muffler, flexible exhaust

connector & fittings

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Fire Pump AccessoriesFire Pump Accessories

Testing Accessories

Test manifold with hose valves,caps and chains

Flow meter

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Fire Pump AccessoriesFire Pump Accessories

Accessories that are not includedbut may be required:

Main relief valve

Waste cone

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Electric Motor DriveElectric Motor Drive

Maximum BHPr of pump shall notexceed the nameplate rating of themotor by more than 15% at the ratedvoltage.

No overload is permitted on TEFC orexplosion-proof motors having a 1.0 SF.

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Diesel EnginesDiesel Engines

The engine must be specificallylabeled for fire pump service by anationally recognized testinglaboratory.

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Electric Fire PumpElectric Fire Pump

Selection TableSelection Table

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Diesel Fire PumpDiesel Fire Pump

Selection TableSelection Table

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Packaged Fire PumpPackaged Fire Pump

SystemsSystems

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Packaged SystemsPackaged Systems

Accommodate all styles ofpumps,electric or diesel

Designed specifically tomeet the particularapplication requirements

Built to NFPA 20Standards

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Why Packaged FireWhy Packaged Fire

Pump Systems?Pump Systems?Single source responsibility

Manufacturer takes fullresponsibility for all aspects ofdesign and engineering

Less time required onthe job site

Fixed cost

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BuildingsBuildings

Single Point ElectricalConnection

Ventilation A/C Louver & Exhaust

Fan Combustion Air

D/C Louver Emergency Lighting Exterior High Pressure

Sodium Light Ceiling Hatch for

Vertical Turbines PE Stamp Available

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Why Aurora PumpWhy Aurora Pump’’ss

Packaged Systems?Packaged Systems? Engineering team located at the factory Aurora is a proven leader in Fire

Pumps All systems are hydrostatically tested Facilities capable of full performance

test Third party listed with ETL

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Basic Pump RoomBasic Pump Room

LayoutLayout

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Hear No Evil - Speak No Evil - See No Evil

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NFPA Pump RoomNFPA Pump Room

LayoutLayout

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Suction PipingSuction Piping

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Pump RotationPump Rotation

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All Pump SalesmenAre Not Created

Equal!!!

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Fire Pump Governing BodiesFire Pump Governing Bodies

National Fire Protection Association (NFPA)

Underwriters Laboratories, Inc. (UL)

Factory Mutual Research Corporation (FM)

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• NFPA Mission: to safeguard people, property andthe environment from destructive fire

• NFPA Standards and Codes• NFPA 20: the standard for Centrifugal Fire Pumps• NFPA 20 Performance Requirements:

– 65% of rated head at 150% of rated flow– Shutoff Head does not exceed 140% of rated

head• NFPA 20 Testing Requirements:

– Factory Certified Performance Test– Field performance test

• NFPA 20 and Equipment Qualification

NFPANFPA

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NFPA 20NFPA 20STANDARD FOR THE INSTALLATIONSTANDARD FOR THE INSTALLATION

OF CENTRIFUGAL FIRE PUMPS OF CENTRIFUGAL FIRE PUMPS

Mandates the performance of:

Fire Pump Driver (Diesel or Electric Motor Drive) Fire Pump Controller

Outlines:

Acceptance Testing Performance Maintenance

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Testing OrganizationsTesting Organizations

F.M. and U.L. are testing organizations:

All U.L. listed pumps have this labelaffixed to the pump.

All F.M. approved pumps have this labelaffixed to the pump.

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Underwriters LaboratoriesUnderwriters Laboratories

UL lists and approves equipment forfire pump service

UL witnesses testing of fire pumps forspecific flow rates

Follow-up audits

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Factory MutualFactory Mutual

Factory Mutual is an insurer in addition tobeing an approval agency.

Factory Mutual approves and tests all typesof fire pump and fire system equipment.

Factory Mutual also approves installation &design of fire pump and fire protectionsystems. This a requirement on an FMinsured project.

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Some commonSome common

regulations that shaperegulations that shape

what we all do.what we all do.

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Performance CriteriaPerformance CriteriaFire pumps shall have the following rated capacities inGPM, and net pressures of 40 PSI or more. Found intable 5.8.2 of NFPA 20

25 GPM 400 GPM 2000 GPM

50 GPM 450 GPM 2500 GPM

100 GPM 500 GPM 3000 GPM

150 GPM 750 GPM 3500 GPM

200 GPM 1000 GPM 4000 GPM

250 GPM 1250 GPM 4500 GPM

300 GPM 1500 GPM 5000 GPM

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Performance CriteriaPerformance Criteria

Factory and Field Performance6.2.1 & 2 NFPA 20

Pumps shall furnish not less than 150%of rated capacity at not less than 65% oftotal rated head. The shutoff head shallnot exceed 140% of rated head for anytype pump.

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Shutoff Head Design Point 150% Point

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Each fire pump is hydrostatically tested at:

1.5 x Sum of pump’s + Maximum allowable shutoff head suction head

(but in no case less than 250 psi)

Each pump is tested to determine maximumhorsepower requirements.

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AHJAHJ

Some decisions are left up to the AuthorityHaving Jurisdiction. In most instances, thisis either the State Fire Marshall, or the FireChief at the Local Fire Department. Lowsuction cutoff panels, limited service firepump controllers, and suction regulatingvalves are some examples of itemscommonly regulated by the AHJ.

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Important changesImportant changes

contained in the 2003contained in the 2003

edition of NFPA 20edition of NFPA 20

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Changes in theChanges in the

publication itself.publication itself.• In 2003, NFPA changed to an

international format, which changedthe chapters throughout the standard.

• 2003 was also the first year that thefour year cycle was used.

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Section 10.5.5 Section 10.5.5

• Variable Speed Pressure LimitingControl.– Only two requirements were listed.

1. The equipment be listed for fire service.2. If the unit failed, the pump would run atfull speed.

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Sections 5.18.1.1,Sections 5.18.1.1,

5.7.4.1 & 5.7.4.25.7.4.1 & 5.7.4.2• Relief Valves for Centrifugal Pumps

– Required?– Not Required?– Rules that govern?– A new requirement!

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Section 5.18.1.3Section 5.18.1.3

• ???

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• Where a variable speed pressurelimiting control driver is installed, apressure relief valve shall be installed.

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• Electronic Fuel Management Control– Engines that incorporate an electronic

control module (ECM) to accomplish andcontrol the fuel injection process shallhave an alternate ECM permanentlymounted and wired so the engine canproduce its full rated power output in theevent of a failure of the primary ECM.

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Section 10.5.2.1.6 (E)Section 10.5.2.1.6 (E)

• A listed pressure recording device shallbe installed to sense and record thepressure in each fire pump controllerpressure sensing line at the input to thecontroller.

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Section 10.8.2.1.5Section 10.8.2.1.5

• Where the alternate source is suppliedby a generator whose capacity exceeds225 % of the fire pump motor’s ratedfull load current, the controller shall beequipped with the alternate side circuitbreaker and isolating switch inaccordance with 10.8.2.1.3

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• State of Readiness– The controller shall be in a fully functional

state within 10 seconds upon applicationof ac power.

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• Equipment protection.– Indoor fire pump units shall be physically

separated or protected by fire ratedconstruction in accordance with Table5.12.1.1

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Table 5.12.1.1Table 5.12.1.1

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• Means shall be provided on theexterior of the controller to read all linecurrents and all line voltages withinplus or minus 5% of full scale.

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Some New, Some Old,Some New, Some Old,

Often Missed ItemsOften Missed Items

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Section 14.2.3Section 14.2.3

• States that all electrical wiring to thefire pump motor, including controlinter wiring, normal power supply,alternate power supply whereprovided, and jockey pump, shall becompleted and checked by theelectrical contractor prior to the initialstartup and acceptance test.

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Section 11.3.2.4.3.1Section 11.3.2.4.3.1

• For radiator cooled engines, theradiator discharge shall be ductedoutdoors in a manner that will preventrecirculation.

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How many manual andHow many manual and

automatic starts areautomatic starts are

required by code at therequired by code at the

field acceptance test?field acceptance test?

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• As a minimum, no fewer than sixautomatic and six manual operationsshall be performed during theacceptance test.

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• A fire pump driver shall be operatedfor a period of at least five minutes atfull speed during each of theoperations required in 14.2.7 (which isthe field acceptance test)

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Section 14.1.3Section 14.1.3

• The installing contractor shall furnish acertificate for flushing and hydrostatictest prior to the start of the fire pumpfield acceptance test.

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Section A.5.24Section A.5.24

• In part – A jockey pump should besized to make up the allowable leakagerate within 10 minutes or 3.8L/min (1GPM), whichever is larger.

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Questions ?Questions ?

Fire Pump presentation

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