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NFPA 20 ChangesNFPA 20 ChangesMay, 2012

NFPA 20 Changes 1

Speaker

Chad Duffy, NFPAChad Duffy, NFPA

Dave Hague, Liberty Mutual Dave Hague, Liberty Mutual Property Property

D HD H MA D f Fi S iMA D f Fi S i

NFPA 20 Changes 2

Dana HaagensenDana Haagensen, MA Dept. of Fire Services, MA Dept. of Fire Services

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Agenda

IntroductionIntroduction

DefinitionsDefinitions DefinitionsDefinitions

General RequirementsGeneral Requirements

Fire Pumps for High Rise BuildingsFire Pumps for High Rise Buildings

Water Mist Positive Displacement Pump UnitWater Mist Positive Displacement Pump Unit

Limited Service ControllersLimited Service Controllers

NFPA 20 Changes 3

Limited Service ControllersLimited Service Controllers

Chapters 9, 10, 11 and 12Chapters 9, 10, 11 and 12

Acceptance TestingAcceptance Testing

IntroductionOverall Course Objective

Increase the participant’s understanding of the Increase the participant’s understanding of the advancements and changes of the 2012 edition of advancements and changes of the 2012 edition of

NFPA 20 pending the outcome of the annual NFPA 20 pending the outcome of the annual technical session.technical session.

NFPA 20 Changes 4

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Definitions

In Sight From (Within Sight From, Within Sight) In Sight From (Within Sight From, Within Sight) 

E t t d f NFPA 70E t t d f NFPA 70 Extracted from NFPA 70Extracted from NFPA 70

Equipment is to be visibleEquipment is to be visible

≤ 50 feet≤ 50 feet

NFPA 20 Changes 5

Definitions

In Sight From (Within Sight From, Within Sight) In Sight From (Within Sight From, Within Sight) 

E t t d f NFPA 70E t t d f NFPA 70 Extracted from NFPA 70Extracted from NFPA 70

Equipment is to be visibleEquipment is to be visible

≤ 50 feet≤ 50 feet

NFPA 20 Changes 6

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Definitions

Record DrawingRecord Drawing

Design working drawing or asDesign working drawing or as‐‐builtbuilt

Submitted as the final record of Submitted as the final record of documentation for the project.documentation for the project.

NFPA 20 Changes 7

Definitions

Total Rated headTotal Rated head

Developed at rated capacity/speedDeveloped at rated capacity/speed

Centrifugal pumpCentrifugal pump

Total pressureTotal pressure

NFPA 20 Changes 8

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Definitions

Velocity Head (Velocity Head (hvhv) ) 

Kinetic energy of a unit weight of fluid moving Kinetic energy of a unit weight of fluid moving 

Includes velocity (v) of fluidIncludes velocity (v) of fluid

Determined at gauge connection.Determined at gauge connection.

NFPA 20 Changes 9

Definitions

OnOn‐‐Site Standby Generator.  Site Standby Generator.  

Production at the facility Production at the facility 

Alternate supply of electric powerAlternate supply of electric power

Differs from an onDiffers from an on‐‐site power production site power production facilityfacility

Not constantly producing powerNot constantly producing power

NFPA 20 Changes 10

Not constantly producing power.Not constantly producing power.

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General Requirements

Other pumps section deleted.Other pumps section deleted.

W t i t iti di l t i itW t i t iti di l t i it Water mist positive displacement pumping unit Water mist positive displacement pumping unit criteria added.criteria added.

Covers the requirements for certified shop test Covers the requirements for certified shop test data for individual pumps and pump units data for individual pumps and pump units operating with and without variable speed operating with and without variable speed f ti ti t df ti ti t d

NFPA 20 Changes 11

functions activated.functions activated.

General Requirements

Water Flow TestWater Flow Test

Not more than 12 months prior to the Not more than 12 months prior to the submission of working planssubmission of working plans

Unless otherwise permitted by the AHJUnless otherwise permitted by the AHJ..

Dedicated ControllerDedicated Controller

NFPA 20 Changes 12

Dedicated Controller Dedicated Controller 

Water Mist Positive Displacement Pumping Water Mist Positive Displacement Pumping Unit added to driverUnit added to driver

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General Requirements

Water Flow TestWater Flow Test

Not more than 12 months prior to the Not more than 12 months prior to the submission of working planssubmission of working plans

Unless otherwise permitted by the AHJUnless otherwise permitted by the AHJ..

Dedicated ControllerDedicated Controller

NFPA 20 Changes 13

Dedicated Controller Dedicated Controller 

Water Mist Positive Displacement Pumping Water Mist Positive Displacement Pumping Unit added to driverUnit added to driver

General Requirements

Equipment ProtectionEquipment Protection‐‐Indoor Fire PumpsIndoor Fire Pumps

Annex addedAnnex added

NotNot‐‐sprinkleredsprinklered pump room for notpump room for not‐‐sprinkleredsprinklered facilities ONLYfacilities ONLY

Equipment AccessEquipment Access‐‐PassagewaysPassageways

2 h i i d l t d2 h i i d l t d

NFPA 20 Changes 14

2 hour minimum deleted2 hour minimum deleted

Not less than the fireNot less than the fire‐‐resistance rating of the resistance rating of the fire pump room addedfire pump room added

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General Requirements

NFPA 20 Changes 15

General Requirements

Elbows and TeesElbows and Tees

Added tees to 4.14.6.3.3Added tees to 4.14.6.3.3

Figure A.4.14.6 has been updated with revised Figure A.4.14.6 has been updated with revised isometric sketches.isometric sketches.

Damage From MovementDamage From Movement

Cl h d t t h NFPA 13Cl h d t t h NFPA 13

NFPA 20 Changes 16

Clearances changed to match NFPA 13 Clearances changed to match NFPA 13 

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Figures A.4.14.6

RightRight WrongWrong

NFPA 20 Changes 17

Figures A.4.14.6

RightRight WrongWrong

NFPA 20 Changes 18

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Figures A.4.14.6

RightRight WrongWrong

NFPA 20 Changes 19

Figures A.4.14.6

RightRight RightRight

NFPA 20 Changes 20

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Definitions

Series Fire Pump UnitSeries Fire Pump Unit

S b ildiS b ildi Same buildingSame building

Operate in seriesOperate in series

11stst pump takes suction directly from a water supplypump takes suction directly from a water supply

Next pump takes suction under pump pressure from Next pump takes suction under pump pressure from the preceding pumpthe preceding pump

NFPA 20 Changes 21

Not if they operate in series through a tank(s) or break Not if they operate in series through a tank(s) or break tank(s)tank(s)

General Requirements

Series Fire Pump UnitSeries Fire Pump Unit

Same room except as permitted by 4.19.2.2Same room except as permitted by 4.19.2.2

Low zone off first pump, figure in next slideLow zone off first pump, figure in next slide

Wire protectionWire protection

Audible and visual signal statusAudible and visual signal status

NFPA 20 Changes 22

CommunicationsCommunications

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NFPA 20 Changes 23

General Requirements

Fire Pump Test HeaderFire Pump Test Header‐‐AnnexAnnex

Building exteriorBuilding exterior

Subject to vandalism/damage interiorSubject to vandalism/damage interior

Always outside pump roomAlways outside pump room

Meters and Testing DevicesMeters and Testing Devices

NFPA 20 Changes 24

Meters need independent testingMeters need independent testing

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General Requirements

NFPA 20 Changes 25

General Requirements

NFPA 20 Changes 26

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High-Rise Buildings

Complete reComplete re--write of chapterwrite of chapter

Equipment AccessEquipment Access

Protection of WiringProtection of Wiring

Moved to Chapter 4Moved to Chapter 4

NFPA 20 Changes 27

High-Rise Buildings

Very Tall BuildingsVery Tall Buildings

Outside of pumping capability of FDOutside of pumping capability of FD

If tanks, need two (totaling system demand)If tanks, need two (totaling system demand)

Automatic and manual fill of tanksAutomatic and manual fill of tanks

Served from separate supply riserServed from separate supply riser

E h fill d dE h fill d d Each fill must meet system demandEach fill must meet system demand

Fire Pump BackupFire Pump Backup

All zones served All zones served

NFPA 20 Changes 28

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Definitions

Water Mist Positive Displacement Pumping Unit  Water Mist Positive Displacement Pumping Unit  

M l i lM l i lMultiple pumps Multiple pumps 

Operate in parallel Operate in parallel 

Discharges into a single common systemDischarges into a single common system

NFPA 20 Changes 29

Dedicated to fire protectionDedicated to fire protection

Water Mist Positive Displacement Pump Unit

Listed for serviceListed for service

Redundancy Redundancy 

Line pressure sensor Line pressure sensor 

Primary control boardPrimary control board

NFPA 20 Changes 30

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Water Mist Positive Displacement PumpUnit

Pressure MaintenancePressure Maintenance

Alternate between two or more pumps.Alternate between two or more pumps.

Supervisory if used >2/hrSupervisory if used >2/hr

Flow not > ½ smallest nozzleFlow not > ½ smallest nozzle

Single sensing line OKSingle sensing line OK

NFPA 20 Changes 31

No longer outlawed in highNo longer outlawed in high‐‐riserise

Water Mist Positive Displacement PumpUnit

Acceptance TestingAcceptance Testing

Manually operated 6 times.Manually operated 6 times.

Automatic operations Automatic operations –– all pumps.all pumps.

Redundant Pumps, automatic operations, Redundant Pumps, automatic operations, system demand.system demand.

Redundant PumpsRedundant Pumps 3 automatic3 automatic

NFPA 20 Changes 32

Redundant Pumps Redundant Pumps –– 3 automatic       3 automatic       operationsoperations

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Limited Service Controllers

OvercurrentOvercurrent 10 7 2 1 deleted10 7 2 1 deleted 10.7.2.1 deleted10.7.2.1 deleted

MarkingMarking Limited Service Controller.Limited Service Controller.

Manufacturer.Manufacturer.

Identifying designation.Identifying designation.

M i e ti e eM i e ti e e Maximum operating pressure.Maximum operating pressure.

Enclosure type designation.Enclosure type designation.

Complete electrical rating.Complete electrical rating.

NFPA 20 Changes 33

Limited Service Controllers

NFPA 20 Changes 34

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Chapters 9, 10, 11 & 12

NFPA 20 Changes 35

Acceptance Testing

Annex FormAnnex Form

Updated to current code requirementsUpdated to current code requirements

Summary of Component Replacement Summary of Component Replacement Testing TableTesting Table

DeletedDeleted

Reference to NFPA 25Reference to NFPA 25

Critical Path ComponentsCritical Path Components

Complete acceptance test performedComplete acceptance test performedNFPA 20 Changes 36

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www.nfpa.org

NFPA 20 Changes 37

Questions?

NFPA 20 Changes 38