OBSOLETE DESIGN DATA PREACTION FOAM/WATER SYSTEM USING AFFF OR ARC. March 1, Foam 30a

Transcription

1 March 1, 2001 Foam 30a 1. DESCRIPTION A Preaction Blad der Tank Foam/Wa ter Sys tem is a stan dard preaction sys tem ca pa ble of dis charg ing a foam/wa ter so lu tion au to mat i cally through any sprin klers that op er ate. A Preaction Blad der Tank Foam/Wa ter Sys tem with a hy drau li cally ac tu ated Halar coated Vi king De luge Con cen trate Control Valve ( CCV ) con sists of a stan dard preaction sys tem us ing a Vi king De luge Valve com plete with full stan dard preaction trim, de tec tion and re leas ing de vices on the wa ter sup ply line, a con - cen trate con trol ler-proportioning de - vice with ap pro pri ately sized or i fice, a hy drau li cally ac tu ated Vi king Halar coated de luge CCV on foam con cen - trate line, a foam con cen trate bladder tank and trim and foam agent. 2. OPERATION Ac tu a tion of the non-interlock, sin gle or dou ble in ter lock preaction sys tem re - lease line (pneu matic, hy drau lic or elec - tric) re lieves the pres sure in the prim ing cham ber of both the Vi king de luge valve (C) and the Vi king Halar coated de - luge CCV (D). This al lows the clap per to open on both valves (C) and (D). The sys tem pip ing is filled with wa ter, ac ti - vat ing con nected alarms. The bladder tank (A) is al ready pres sur ized by the wa ter supply pip ing (11). Sys tem wa ter pres sure in the space be tween the flex i - ble blad der and the in side sur face of the steel tank, causes the blad der to col - lapse, forc ing the foam con cen trate out through the foam con cen trate dis - charge pip ing (14), Vi king Halar coated de luge CCV (D), and the me ter - ing or i fice of the con cen trate con trol ler (B), into the venturi (low pres sure) area of the con cen trate con trol ler (B). The foam con cen trate is pro por tioned (usu- ally 3% or 6%), with the main wa ter sup - ply, send ing foam so lu tion to the sprin - klers and foam/wa ter dis charge de vices down stream. 3. DISCHARGE DEVICES Stan dard spray sprin klers Hose reels and hand lines Other ap proved dis pens ing de - vices 4. GENERAL IN STRUC TIONS AND WARNINGS A. Re fer to the Gen eral Notes and Warn ings in the De sign sec tion of the Vi king Foam Data Book. B. Re fer to spe cific tech ni cal data sheets, ac cept able in stal la tion stan dards, codes and Au thor ity Hav ing Ju ris dic tion for ad di tional in stal la tion, op er a tion and main te - nance in struc tions. C. In spec tions - It is im per a tive that the sys tem be in spected and tested on a reg u lar basis. See In - spec tion and Main te nance. D. WARNING - Any sys tem main te - nance or test ing which in volves plac ing a con trol valve or de tec - tion sys tem out of ser vice may elim i nate the Fire Pro tec tion of that sys tem. Prior to pro ceed ing, no tify all Au thor ities Hav ing Ju ris - dic tion. Con sid er ation should be given to em ploy ment of a Fire Pa - trol in the af fected area. E. The valve, trim and as sem bly must be in stalled in an area not sub ject to freez ing tem per a tures or phys i - cal dam age. 5. DESIGN & INSTALLATION WARNING: Lo cate all por tions of the foam/wa ter sys tem sub ject to freez ing, in a heated area. A. Re fer to the Spe cial Notes on page 30c and the Gen eral Notes and Warn ings on page 50a-d in the De sign sec tion of the Vi king Foam Data Book. B. In stall the preaction valve (C) and trim in ac cor dance with the Vi king En gi neering and De sign Data Book. C. In stall the pro por tion ing de vice, con cen trate con trol ler with in te - gral or i fice (B), in riser pip ing. (See Note A and B, Page 30c) D. In stall foam so lu tion test valve (16) and sys tem iso la tion valve (17). E. In stall hy drau li cally ac tu ated Halar coated Vi king de luge CCV (D) and as so ci ated trim in clud ing a re mov able spool piece as in di - cated on Fig ure 30, Page 30b, and trim charts or tech ni cal data pages. F. In stall blad der tank (A) in ac cor - dance with the man u fac turer s in - struc tions with con nec tions as shown on Fig ure 30, Page 30b and herein de scribed. 1. Lo cate the tank as close as prac ti cal to the sys tem riser. (See Spe cial Note B on Page 30c). 2. Al low enough room around the tank to ser vice the blad der. 3. Al low ac cess to the tank for fill - ing from bar rels of foam con - cen trate. 4. In stall the pipe from the riser to the tank as in di cated on Fig - ure 30. The tank wa ter sup ply pip ing (11) from the riser which sup plies the blad der tank (A). The tank wa ter sup - ply pip ing con nec tion for a pre-action sys tem should be in stalled be low the pre-action valve as shown on Fig ure 30. This is to elim i nate the pos si - bil ity of al low ing com pressed air into the blad der tank which could dam age the blad der. This will also pre - vent the ac ci den tal drain ing of the blad der tank wa ter sup - ply pip ing and tank, when drain ing the sys tem riser. In - stall the pip ing from the tank (A) to the con cen trate con - trol ler (B) as straight as pos si - ble. 5. All valves and de vices should be lo cated for easy ac cess for op er a tion and main te nance. G. Pres sur ize Sys tem 1. Ver ify that wa ter supply valve (9) is closed, close tank wa ter sup ply con trol valve (10), then place the preaction valve (C) in ser vice as fol lows (See in stal la tion in struc tions on Vi king Tech ni cal Data Sheet). Open sys tem iso la - tion valve (17) if closed. 2. Set re lease and de tec tion sys - tem ac cord ing to in stal la tion in struc tions for type of preaction sys tem used. Pres - sur ize sys tem pip ing with air pres sure per in stal la tion in - struc tions for the type of 3. Prime both Vi king De luge valves (C & D) by open ing the Form No Re places Foam Pages 301a-f dated Feb ru ary 9, Re moved ATC ref er ence and re placed with ARC and re vised page num ber.

2 Foam 30b March 1, 2001

3 March 1, 2001 Foam 30c SYS TEM COM PO NENTS FOR FIG URE 30 - BLAD DER TANK FOAM SYS TEM WITH HY DRAU LICALLY AC - TU ATED DE LUGE CON CEN TRATE CON TROL VALVE A. Foam Con cen trate Blad der Tank com plete with Items Wa ter Drain/Fill Valve - 2. Fill Line Master Shut-off Valve Con cen trate Drain/Fill Valve - 4. Fill Cup Sight Gauge Shut-off Valve - 5. Sight Gauge As sem bly - The trim for this as sem bly var ies with the type of foam con cen trate to be used. Re fer to Tank Man u fac - turer s O & M Man ual for spe cific de tails. 6. Tank Water Vent Valve - 7. Di a phragm Con cen trate Vent Valve - A B C B. Pro por tioning De vice - Con cen trate Con trol ler with In te gral Or i fice C. Type of Sys tem - Preaction valve com plete with Standard Trim, gauges, and preaction check valve all con - nected to an ap pro pri ate re lease and de tec tion sys tem 9. Wa ter Sup ply Con trol Valve - NORMALLY OPEN D. Foam Con cen trate Con trol Valve (CCV ) - Hy drau lically ac tu ated Viking Halar coated de luge CCV 13. Water Pres sure Gauge, 3 way valve and re main der of CCV spe - cial trim E. Ac ces sory Trim - (Or der each item sep - a rately) 8. Con cen trate Con trol Shut-off Valve - NORMALLY OPEN *** 10. Tank Wa ter Sup ply Con trol Valve - NORMALLY OPEN 11. Wa ter Sup ply Pip ing to Blad der Tank SPECIAL NOTES Pro vide a min i mum of 5 pipe di am e ters of straight pipe on the in let and out let of the conc en trate con trol ler (B) to min i mize tur bu lence in side the con cen trate con trol ler. How ever, if the out let to the foam so lu tion test valve (16) is lo cated closer than 5 pipe di am e ters there may be tur bu lence at high flow rates. The com bined to tal equiv a lent length of pipe (pipe length, plus equiv a lent lengths for fittings and valves) in clud ing both the wa ter sup ply in let pip ing (11) and the foam con cen trate dis charge pip ing (14), sho uld not ex ceed 50 equiv a lent feet (15.2 me ters). This will al low both pipes to be the same size as the foam liq uid in let to the con cen trate con trol ler. If the to tal equiv a lent length must ex ceed 50 feet (15.2 me ters), then re fer to the Pro por tioning De vice De sign Data lo cated in the Design Sec tion of this data book for the method of cal cu lat ing these pipe sizes. The Vi king Halar coated de luge CCV (D) and swing check valve (15) must be con nected ad ja cent to the con cen trate con trol ler us ing pipe nip ples as short as pos si ble. 12. Re lease Line/Priming Line Pip - ing to foam con cen trate con trol valve (D) 14. Foam Con cen trate Dis charge Piping 15. Foam Con cen trate Swing Check Valve 16. Foam So lu tion Test Valve Sys tem Iso la tion Valve - NORMALLY OPEN 18. 1/2" Foam con cen trate aux il iary drain valve** (Only re quired on sys tems where con cen trate con - trol ler (B) is in stalled be low de - luge valve (C) *** Full Port Bronze Body with 316 Stain less Steel Trim and Ball (2" and un der) for AFFF & ATC. Cast Iron Body OS & Y with Bronze Trim and Seats (over 2") for AFFF only. D E F G Fig ure 30 is a gen eral sche matic of the re quired pip ing ar range ment. Re fer to the ap pro p ri ate tech ni cal data page for spe cific in for ma tion re gard ing the valve, tank, and re lated trim and de vices. The tech ni cal in for ma tion, state ments and rec om men da tions con tained in this man ual are based on in for ma tion and tests which, to the best of our knowl edge, we be lieve to be de pend able. It rep re sents ge n eral guide lines only, and the ac cu racy or com plete ness thereof, are not guar an teed since con di tions of han dling and us age are out side our con trol. The pur chaser should de ter mine the suit abil ity of the prod uct for its in tended use and as sumes all risks and li a bil ity what so ever in con nec tion there with. The Vi king Halar coated de luge CCV (D) does not re quire any trim ex cept for a 1/2" prim ing line (12) and wa ter pres sure gauge and 3 way valve (13) from the main de luge valve (C) to the prim ing cham ber of va lve (D). Plug all re main ing valve trim outlets. Re fer to the Equip ment sec tion of this data book un der Valve s, to find the cor rect trim kit part num ber for the cor re spond ing size of foam CCV (D) re quired. A strainer is not re quired in the foam con cen trate dis charge pip ing (14) of blad der tank sys tems per NFPA Stan dards.

4 Foam 30d March 1, 2001 prim ing valve on the preaction de luge valve (C) trim. Bleed off any air pres - sure trapped in the prim ing line (12) to the Vi king Halar coated CCV (D) by open ing the 3 way pres sure gauge valve (13). Once air pres sure has been re lieved, close the 3 way valve and plug out let. Re-open 3 way valve to main - tain pres sure on gauge (13) 4. When pres sure in preaction de luge valve (C) and the CCV (D) prim ing cham bers equal sys tem wa ter supply pres - sure, turn on sys tem wa ter sup ply by open ing main drain on preaction de luge valve (C) and partially open ing wa ter sup ply valve (9). When wa ter ap pears at main drain, slowly close main drain. Be fore fully open ing wa ter supply con trol valve (9), place alarm test shut-off valve in alarm po si tion. 5. Place blad der tank (A) in ser - vice by fol low ing man u fac tur - ers in struc tions, ex cept to slowly open con cen trate con - trol shut-off valve (8***) to al - low foam con cen trate to flow slowly to the Vi king Halar coated de luge CCV (D). With sys tem fully set, fully open and se cure wa ter sup ply con - trol valve (9). 6. Ver ify nor mal valve po si tions 7. Check for and re pair any leaks. 6. REMOVING THE SYSTEM FROM SER VICE AND RE - TURNING THE SYSTEM TO SERVICE WARNING: See Warn ing on Page 30e, Item 7, In spec tion and Main te nance A. For sys tem and riser pip ing main - te nance and ser vice. 1. Close wa ter sup ply control valve (9) and shut-off su per vi - sory air sup ply to sys tem pip - ing. 2. Close con cen trate shut-off valve (8***) and tank wa ter sup ply valve (10). 3. Open all drain valves on preac tion sys tem. 4. Leave sys tem iso la tion valve (17) open. 5. Re fer to in struc tions for re mov - ing the preaction de luge valve (C) from ser vice in the Vi king En gi neering and De - sign Data Book. 6. Per form main te nance and ser - vice on sys tem and riser pip - ing. 7. With tank wa ter supply valve (10) closed, place the preaction de luge valve (C) in ser vice as fol lows (See in stal - la tion in struc tions in Vi king En gi neering and De sign Data Book). 8. Set re lease and de tec tion sys - tem ac cord ing to in stal la tion in struc tions for type of Pres sur ize sys tem pip ing with air pres sure per in stal la tion in struc tions for the type of 9. Prime both Vi king De luge valves (C & D) by open ing the prim ing valve on the de luge valve (C) trim. Bleed off any air pres sure trapped in the prim ing line to the CCV (D) by open ing the 3 way pres sure gauge valve (13). Once air pres sure has been re lieved, close the 3 way valve and plug the out let. Re-open 3 way valve to main tain pres - sure on gauge (13). 10. When pres sure in de luge valve (C & D) prim ing cham bers equal sys tem wa ter sup ply pres sure, turn on sys tem wa - ter supply by open ing main drain on preaction de luge valve (C) and par tially opening wa ter sup ply valve (9). When wa ter ap pears at main drain, slowly close main drain. Be - fore fully open ing wa ter sup ply valve (9), place alarm test shut-off valve in alarm po si - tion. Ver ify sys tem iso la tion valve (17) is open. 11. Open tank wa ter supply valve (10) and con cen trate shut-off valve (8***). With sys tem fully set, fully open and se cure wa - ter supply con trol valve (9). 12. Ver ify nor mal valve po si tions 13. Check for and re pair any leaks. B. For tank main te nance and ser vice - While leav ing preaction de luge sys tem in ser vice 1. Close con cen trate shut-off valve (8***) and tank wa ter sup ply (10). 2. Fol low tank man u fac turer s pro ce dures for re mov ing from ser vice, and per form main te nance. 3. To re turn to ser vice, close wa - ter supply con trol valve (9) and ver ify Vi king Halar coated CCV (D) and preaction valve (C) are closed. Fol low tank man u fac - turer s pro ce dure for re turn - ing blad der tank to ser vice, ex cept to slowly open con - cen trate con trol shut-off valve (8***). 4. Ver ify that con cen trate shut-off valve (8***), tank wa ter sup - ply (10) and sys tem iso la tion valve (17*) are open. Ver ify preaction de luge valve (C) is primed, then open wa ter sup - ply con trol valve (9). 5. Ver ify nor mal valve po si tions 6. Check for an re pair any leaks C. For to tal sys tem main te nance and ser vice 1. Close wa ter sup ply con trol valve (9), con cen trate con trol shut-off valve (8***) and tank wa ter sup ply valve (10). 2. Shut off preaction sys tem air sup ply and bleed off air pres - sure. Open all drain valves on preaction de luge sys tem 3. Leave sys tem iso la tion valve (17) open. 4. Refer to in struc tions for re mov - ing the preaction de luge valve (C) from ser vice. See

5 March 1, 2001 Foam 30e ap pro pri ate Vi king Tech ni cal Data Sheet. 5. Per form main te nance and ser - vice as re quired. 6. Re fer to the Spe cial Notes on page 30c and the Gen eral Notes and Warn ings on pages 750a & b and 751a & b. 7. Place the preaction valve (C) in ser vice as fol lows (See in stal - la tion in struc tions on Vi king Tech ni cal Data Sheet) Open sys tem iso la tion valve (17) if closed. 8. Set re lease and de tec tion sys - tem ac cord ing to in stal la tion in struc tions for type of preaction sys tem used. Pres - sur ize sys tem pip ing with air pres sure per in stal la tion in - struc tions for the type of 9. Prime both Vi king De luge valves (C & D) by open ing the prim ing valve on the preaction de luge valve (C) trim. Bleed off any air pres - sure trapped in the prim ing line (12) to the Vi king Halar coated CCV by open ing the 3 way pres sure gauge valve (13). Once air pres sure has been re lieved, close the 3 way valve and plug out let. Re-open 3 way valve to main - tain pres sure on gauge (13). 10. When pres sure in preaction de luge valve (C) and CCV (D) prim ing cham bers equal sys - tem wa ter sup ply pres sure, turn on sys tem wa ter sup ply by open ing main drain on preaction de luge valve (C) and par tially open ing wa ter sup ply valve (9). When wa ter ap pears at main drain, slowly close main drain. Be fore fully open - ing wa ter sup ply con trol valve (9), place alarm test shut-off valve in alarm po si tion. 11. Place blad der tank (A) in ser - vice by fol low ing man u fac tur - ers in struc tions, ex cept to slowly open con cen trate con - trol shut-off valve (8***). With sys tem fully set, fully open and se cure wa ter sup ply control valve (9). 12. Ver ify nor mal valve po si tions 13. Check for and re pair any leaks. 7. INSPECTION & MAIN TE - NANCE NO TICE: The owner is re spon si ble for main tain ing the fire pro tec tion sys tem and de vices in proper op er at ing con di - tion. For min i mum main te nance and in - spec tion re quire ments, re fer to rec og - nized stan dards such as those pro - duced by NFPA, LPC and VdS which de scribe care and main te nance of sprin kler sys tems. In ad di tion, the Au- thor ity Hav ing Ju ris dic tion may have ad di tional main te nance, test ing and in - spec tion re quire ments which must be fol lowed. WARNING - Any sys tem main te nance or test ing which in volves plac ing a con - trol valve or de tec tion sys tem out of ser - vice may elim i nate the Fire Pro tec tion of that sys tem. Prior to pro ceed ing, no tify all Au thor ities Hav ing Ju ris dic tion. Con - sid er ation should be given to em ploy - ment of a Fire Pa trol in the af fected area. In spec tions - It is im per a tive that the sys tem be in spected and tested on a reg u lar ba sis. The fol low ing rec om - men da tions are min i mum re quire - ments. The fre quency of the in spec - tions may vary due to con tam i nated or cor ro sive wa ter sup plies and cor ro sive at mo spheres. In ad di tion, the alarm de - vices or other con nected equip ment may re quire more fre quent in spec tions. Re fer to the tech ni cal data, sys tem de - scrip tion, ap pli ca ble codes and Au thor - ity Hav ing Ju ris dic tion for min i mum re - quire ments. Prior to test ing the equip - ment, no tify ap pro pri ate per son nel. A. Alarm Test - At least quar terly, test all con nected alarm de vices by open ing the re mote in spec tors test valve. B. Riser Flow Test - At least quar terly, per form a riser flow test. Ob serve and re cord the sup ply pres sure gauge read ing. Open the main drain valve fully. Again, ob serve and re cord the sup ply pres sure gauge read ing. Close the main drain valve. If the read ings vary sig nif i cantly from those pre vi ously es tab lished or from nor mal, check the main supply line for ob struc - tions or closed valves and cor rect. C. Gen eral - Vi sually in spect the valve, trim, pip ing, alarm de vices and con nected equip ment for phys i cal dam age, freez ing, cor ro - sion or other con di tions that may in hibit the proper op er a tion of the sys tem. 8. TROUBLESHOOTING A. For op er at ing and main te nance in - struc tions per tain ing to Vi king man u fac tured equip ment, re fer to the ap pro pri ate Vi king Tech ni cal Data Sheet. B. For op er at ing and main te nance in - struc tions per tain ing to foam equip ment man u fac tured for Vi - king, re fer to the ap pro pri ate sec - tion of the Vi king Foam Data Book. C. For op er a tion and main te nance in - struc tions for all other equip ment, re fer to ap pro pri ate equip ment data 9. EMERGENCY INSTRUCTIONS A. Dur ing and af ter a fire: 1. Make sure the fire is OUT! Make a com plete in spec tion of all ar eas cov ered by this sys tem in clud ing ar eas not in volved in the fire. Place a fire watch in the en tire area un til the sys tem is back in ser - vice. 2. Close the tank wa ter sup ply valve (10) then close the sys - tem wa ter supply con trol valve (9). Post a per son at the valve ready to turn it back on should the fire re kin dle. 3. Open the flow test an gle valve, sys tem drain valve and all aux il iary drain valves. Close drain valves once the sys tem has com pletely drained. 4. Re place any fused sprin klers in the pi lot line (if so equipped), and any fused sprin klers in the preaction sys tem, with the same type and tem per a - ture rat ing as were re moved. Check all re leases and/or de - tec tors in the fire area for dam age. 5. Iso late the blad der tank (A) by clos ing the con cen trate con -

6 Foam 30f March 1, 2001 trol shut-off valve (8***) and ver ify that the tank wa ter sup - ply con trol valve (10) is closed. 6. Check the level of foam con - cen trate and re fill the foam con cen trate blad der tank (A) by fol low ing tank man u fac - turer s in struc tions. Al ways re place the foam con cen trate with the same brand and type as that be ing used cur rently. Note: Never in ter mix dif fer ent types or brands of foam con - cen trate, as this could cause them to gel or so lid ify, and ren der the con cen trate use - less. 7. Re turn the com plete sys tem to ser vice by fol low ing the pro - ce dure listed in Sec tion 6C, Steps 6 through Per form quar terly test. 9. Fire can dam age pip ing and sup ports, so call your Vi king Rep re sen ta tive for as sis tance in ob tain ing a com plete in - spec tion and ad di tional re - place ment sprin klers. For ad - di tional de tails, see tech ni cal data sheets for spe cific de - vice. NOTE: If re place ment foam con cen - trate is not im me di ately avail able, ac ti vate the preaction sys tem por - tion of the foam/wa ter sys tem un til the re place ment con cen trate ar - rives. B. For emer gency shut down of the com plete sys tem 1. Close main wa ter sup ply valve (9) 2. Close con cen trate con trol shut-off valve (8***) to elim i - nate the flow ing of the foam con cen trate to the hy drau li - cally ac tu ated Vi king Halar coated de luge CCV (D) and the con cen trate con trol ler (B) 3. Open main drain 4. Close tank wa ter sup ply con - trol valve (10) to re duce the pres sure on the blad der tank (A) 5. Com pletely drain sys tem 6. Re pair the dam aged por tion of the dis charge sys tem, or per - form emer gency main te - nance as re quired 7. Re turn the riser and foam sys - tem to ser vice by fol low ing the pro ce dure listed in Sec - tion 6C, Steps 4 and 6 through 13 C. If the foam con cen trate pipe sys - tem is dam aged: 1. Close the con cen trate con trol shut-off valve (8***) to elim i - nate the flow ing of the foam con cen trate to the hy drau li - cally ac tu ated Vi king Halar coated de luge CCV (D) and the con cen trate con trol ler (B) 2. Close the tank wa ter sup ply con trol valve (10) to re duce the pres sure on the blad der tank (A). 3. Ver ify that the Vi king Halar coated de luge CCV (D) is closed by ob serv ing wa ter pres sure gauge (13). If the wa ter pres sure gauge reads the same or higher than the sys tem wa ter pres sure gauge lo cated on the Vi king preaction de luge valve (C), the Halar coated Vi king de - luge CCV (D) is closed. 4. Re pair the dam aged por tion of the foam con cen trate pip ing sys tem. 5. Re turn the foam con cen trate sys tem to ser vice by fol low - ing the pro ce dure listed above in 6B, steps 3 thru 6. NOTE: If there are no dam aged sec - tions of the dis tri bu tion sys tem, the preaction por tion of the sprin - kler sys tem may be kept in ser vice for pro tec tion, while re pairs to the foam con cen trate sys tem are per - formed. Form No Re places Foam Pages 301a-f dated Feb ru ary 9, Re moved ATC ref er ence and re placed with ARC and re vised page num ber.