Fire sprinkler design

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1 Fire sprinkler design Design considerations Koen Van Herpe MSc Fire Safety Engineer VK_Engineering

2 Doelstelling Stappenplan ontwerp Geen cursus voor sprinkler projectering + hydraulische berekeningen Checklist inhoud sprinklerdossier Studiedag

3 Stappenplan ontwerp sprinklerinstallatie Leidraad: ontwerp sprinklerinstallatie Bepaal commodity & occupancy Bepaal type sprinklerinstallatie Nat, droog, preaction (non interlock, single interlock, double interlock), deluge,.. Bepaal de opslagconfiguratie + opslaghoogte (gewenst) Bepaal de risicoclassificatie. densiteit en sproeivlak of; aantal sprinklers met minimale startdruk.en bijhorende begrenzingen m.b.t. de projectering Type sprinkler Storage / non-storage sprinkler Nozzles Benodigde info / tools Duidelijk inzicht proces/ kennis materialen + verpakking FM DS 8-1 / NFPA13 Ch.5 / EN12845 Annex Testrapporten FM / UL /. Bouwtechnische info : vorstvrij,.. Brandgedrag commodity Info proces (labo, clean rooms, productie, opslag, ) FM DS 2-0 Installation guidelines / NFPA13 / EN12845 Bouwkundige info: Type rekken, afstand tussen rekken, flue space, Gebouwhoogte FM 2-0 Installation guidelines / FM 8-9 Storage of class 1,2,3,4 & plastic commodities /EN12845 /NFPA13 Vb : OH III densiteit = 5 l/min.m² ; Sproeivlak = 216 m² Max.opp / sprinkler = 12 m² + max.afstand = 4 m Cut sheets = technische datasheets sprinkler 3

4 Stappenplan ontwerp sprinklerinstallatie Leidraad: ontwerp sprinklerinstallatie Projectering sprinklers + sprinklerleidingen Bepalen aantal sprinklerleidingen Bepalen aantal sprinklers per leiding Benodigde info / tools Bouwkundige info : plannen gebouw + doorsnedes De structuur van het gebouw, met inachtname van de bevestigingsmogelijkheden, is veelal bepalend voor de richting van de sprinklerleidingen. FM 2-0 / NFPA 13 / EN12845 : Installation requirement Obstruction rules Bevestiging leidingen : Positie + dimensionering componenten hangers Support rules 4

van het gebouw, met inachtname van de bevestigingsmogelijkheden, is veelal bepalend voor de richting van de sprinklerleidingen.

5 Stappenplan ontwerp sprinklerinstallatie Leidraad: ontwerp sprinklerinstallatie Coördinatie met andere technieken Verlichting / HVAC / RWA.. Mogelijke obstructies voor sproeibeeld Benodigde info / tools Cut sheets = technische datasheets sprinkler Software tools voor coördinatie Interference checking Extra leidingsverliezen Controle hydraulische berekeningen 5

. Mogelijke obstructies voor sproeibeeld Benodigde info / tools Cut sheets = technische

6 Stappenplan ontwerp sprinklerinstallatie Leidraad: ontwerp sprinklerinstallatie Uitvoeren hydraulische berekeningen Bepalen sproeivlak Vorm + positie Benodigde info / tools FM 2-0 / NFPA 13 / EN12845 : Installation requirement Hydraulic calculations Sprinkler classificatie -> oppervlakte remote area 6

Vorm + positie Benodigde info / tools FM 2-0 / NFPA 13 / EN12845 :

7 Stappenplan ontwerp sprinklerinstallatie Leidraad: ontwerp sprinklerinstallatie Uitvoeren hydraulische berekeningen Bepalen leidingdiameters Optimalisatie : K-Factor sprinkler / leidingconfiguratie Keuze pomp Benodigde info / tools Info DWL : Druk debiet metingen Handmatige berekeningen Software : Volledig automatische berekeningen 7

K-Factor sprinkler / leidingconfiguratie Keuze pomp Benodigde info / tools Info DWL

8 Stappenplan ontwerp sprinklerinstallatie Leidraad: ontwerp sprinklerinstallatie Dimensioneren van de watervoorziening Inhoud watertank Debiet + opvoerhoogte (druk) pomp Vermogen Benodigde info / tools Extra verbruikers : hydranten / haspels / Classificatie => Werkingsduur installatie LH = 30 min OH = 60 min HHP / HHS = 90 min ESFR = 60 min 8

pomp Vermogen Benodigde info / tools Extra verbruikers : hydranten / haspels /

9 Checklist dossier sprinklersysteem I. Administrative : II. Architectural : Scaled drawings with complete title block information Name of owner and occupant Location, including street address Point of compass Project name and address Building location, owner Designer s name Sprinkler contractor name, address, telephone number, Revisions Scale Site location List of all applicable codes and standards All room names If the classification of occupancy (hazard) is not obvious by the room name provide further clarification Location of all partitions and doors Identify the different fire rated walls Ceiling construction and height for all rooms Ceiling obstructions and their dimensions Explain blind spaces and other areas where sprinklers are not to be installed Provide justifications on plans with code sections Full height cross sections with enough detail 9

Designer s name Sprinkler contractor name, address, telephone number, Revisions Scale Site location List of all applicable codes and standards 2. 3. 4. 5. 6. 7.

10 Checklist dossier sprinklersysteem III. Design criteria: Hazard classification (occupancy) Density & area of sprinkler operation Sprinkler system: wet, dry,deluge, preaction, Allowable area coverage per sprinkler head High pile storage of materials Commodity classification 2. Storage arrangements (height) 3. Density and area of sprinkler operation 4. Sprinkler system: wet, dry,deluge, preaction, Rack storage of materials Commodity classification 2. Storage arrangements (height) 3. Density and area of sprinkler operation 4. Sprinkler system: wet, dry,deluge, preaction, IV. System layout: Piping Show all pipe sizes (incl. wall thickness) Material cut sheets (mfg,type,listings ) Elevation of all pipes Size & lengths of riser nipples & drops Fittings Materials (mfg,type,listings, ) Details of joining methods (threaded, grooved, welded, ) Hangers Materials and configuration (mfg,listings) Locations Fastener details (mfg,type,size Sprinklers Dimension between sprinklers Dimension from sprinklers to walls / obstructions Manufacturer, model number, quantities,listings Temperature rating / K-factor. Alarm valves / valves. Drainage. Fire department connection. 10

Commodity classification 2. Storage arrangements (height) 3. Density and area of sprinkler operation 4.

11 Checklist dossier sprinklersysteem V. Hydraulic calculations: Calculation design area Show clearly the boundary of each design area Indicate actual total area calculated Min. required density / startpressure Min.area of operation Hydraulic reference points on plan corresponding to calculations Abbreviations and symbols Peaking of gridded systems Most remote area Total friction loss between reference points Friction loss per m pipe Equivalent pipe lengths for all fittings and devices used in calculation Required pressure and flow in each reference point Overview of hydraulic calculations on a graph sheet VI. Water supply: Detail of connection to water supply Detail of transition from undergound to overhead system Materials, details of penetrations,clearances Hydrant test information Location and elevation of static & residual pressure Flow location Date & time of test Test conducted by or information supplied by Circulating or dead end Pipe diameter and type of material 11

area of operation Hydraulic reference points on plan corresponding to calculations Abbreviations and symbols Peaking of gridded systems Most remote area Total friction loss between reference points

12 Checklist dossier sprinklersysteem VII. Water tanks: Water supply to refill tank A permanent connection to an approved water supply shall be provided to fill the tank 2. Automatic fill devices 3. Nameplate : Tank capacity / mfg / year/listings 4. Tank level & temperature monitoring 5. Overflow/fill protection 6. Detail of anti vortex plate 7. Detail of jointing method 8. Location of tank and all piping and fittings to system pump 9. Tank & suction line protection from freezing 10. Provide vertical and horizontal (isometric) views of tank and relation to pump location VIII. Fire pump details: Plan view of fire pump room showing: fire pump, jockey pump, floor drain, relief valve, flow meter, FDC, controller for fire pump and jockey pump, fuel tank for diesel, test header, battery system, access door, all associated piping, appurtenances Detailed views / section views: Eccentric reducer with the eccentric reducer, installed with flat side on top Check valves, butterfly valves, OS&Y valves, sensing line and controllers (indicate if valves are NO or NC) Section views from different angles and locations to provide full understanding of the design Factory fire pump test curve data sheets Minimum room temperature 12

Location of tank and all piping and fittings to system pump 9. Tank & suction line protection from freezing 10.

13 Questions? Koen Van Herpe MSc Fire Safety Engineer +32(0)

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