What are the Nozzle tip size for fire truck pump test?

What are the Nozzle tip size for fire truck pump test?
Procedure:Park apparatus to be tested in a safe location; close enough to the water source to provide adequate water supply. If a hydrant is used, an area should be secured to allow for hoses, etc. Connect the discharge hose(s) and nozzle(s) as needed for the given pump capacity listed in table A (Hose and Nozzle Layout). Gate valves can be used to create friction loss for the different test flows. The apparatus discharge valves can also be used. When two or more lines are needed they may be connected to a monitor. 100 feet of hose is usually adequate. Table A - Hose and Nozzle LayoutDischarge GPMNozzle SizeLayout 2 1/2" attack line250 - 3501 1/8" or1 1/4"One 50 ft. lineOne 50 ft. line400 - 5001 3/8" or1 1/2"One 50 ft. lineOne 50 ft. line600 - 7501 1/2" or1 3/4"Two 100 ft. linesTwo 100 ft. lines10002"2 or 3 100 ft. lines12502 1/4"Four 100 ft. lines12501 3/4" &1 1/2"Two 100 ft. lines &One 50 ft. line15002" &1 3/8"Three 100 ft. linesOne 50 ft. line17502 - 2"Two 100 ft. lines each20002 - 2"Two 100 ft. lines eachReference: NFPA 1911, Service Tests of Pumps on Fire Department Apparatus, 1911 Connect draft / suction hose and strainer (or adequate hydrant supply hose) to the intake of the pump. Make sure that all valves are closed and the suction hose is tight enough to maintain a seal. Place the suction hose in the water. Strainer must be at least two feet below the water surface. Start the pump and develop pressure. Once pressure is obtained (from draft) open the discharge valve(s) slowly to permit the flow of water. The main pump speed is gradually increased until the desired pressure at the pump is reached (150 psi). Check the flow at the nozzle with a pitot gauge or flow meter. If the flow is too great, partially close one (or more) gate valves. If the flow is too low, open the valve. Readjust engine speed to correct discharge pressure. Engine speed should not exceed 80% of its peak. When both the discharge pressure and the volume flowing are satisfactory, the test begins and runs for 20 minutes. Record the pump discharge pressure, nozzle pressure, engine tachometer when the test begins and at 5 minute intervals throughout the complete test. Automatic relief valves should be disengaged during the test. Annual Fire Apparatus Pump Service TestMeets NPFA standards and ISO requirementsTaken from NFPA 1911 This test is to be used annually to test fire apparatus that has a fire pump with 250 gpm or larger capacity or if the pump and/or engine on the apparatus have been repaired or modified. It meets the NFPA 1901 Class A Pump rating test and ISO requirements for annual pump or service test. This test is not the same as a "New Apparatus Acceptance or UL (Underwriter's Laboratory) Test" which is conducted by an independent agency for the manufacturer and is approximately 3 hours in length. NPFA 1901 Class "A" Pump RatingRating Capacity 100% capacity at 150 psi 70% capacity at 200 psi 50% capacity at 250 psiAnnual Pump Test - Service TestMay be done by local fire department 1 hour100% Capacity at 150 psi for 20 minutes70% Capacity at 200 psi for 10 minutes50% Capacity at 250 psi for 10 minutes Warning! Pump service testing can be a dangerous operation and all safety precautions should be taken. Equipment needed: Pump apparatus to be tested Firm, level surface near large (10,000 gallons or more) body of water with at least 4 feet of water depth, not more than 10 feet below the center of the pump intake which will allow the strainer to be submerged at least two feet below the surface of the water 20 feet of hard suction hose appropriate for the rated capacity of the pump 2 inch discharge hoses of appropriate length for the pump (see table A "HOSE AND NOZZLE LAYOUT") Straight bore nozzles of appropriate discharge diameter (see table A "HOSE AND NOZZLE LAYOUT") Monitor (may not be required, see table A "HOSE AND NOZZLE LAYOUT") Pitot gauge PUMP TEST DATA form (one needed for each pump to be tested) Calculator In testing the pump there are three variable factors, the change in one factor will cause change in at least one of the other factors. The three variables are pump speed, net pump pressure, and pump discharge rate. For example; any change to engine speed changes pump speed. Any change to hose layout or valve position changes pump pressure. Change in the nozzle tip changes discharge rate. Using these variables is the only way to reach the standard test condition desired. While tests are being performed, attention should be given to engine temperature and oil pressure to ensure that they are in normal range. Any unusual vibrations or water leaks should be checked, noted and repaired after the test is complete. Any indication of engine or pump failure dictates that it is pointless to continue the test.
Procedure:Park apparatus to be tested in a safe location; close enough to the water source to provide adequate water supply. If a hydrant is used, an area should be secured to allow for hoses, etc. Connect the discharge hose(s) and nozzle(s) as needed for the given pump capacity listed in table A (Hose and Nozzle Layout). Gate valves can be used to create friction loss for the different test flows. The apparatus discharge valves can also be used. When two or more lines are needed they may be connected to a monitor. 100 feet of hose is usually adequate. Table A - Hose and Nozzle LayoutDischarge GPMNozzle SizeLayout 2 1/2" attack line250 - 3501 1/8" or1 1/4"One 50 ft. lineOne 50 ft. line400 - 5001 3/8" or1 1/2"One 50 ft. lineOne 50 ft. line600 - 7501 1/2" or1 3/4"Two 100 ft. linesTwo 100 ft. lines10002"2 or 3 100 ft. lines12502 1/4"Four 100 ft. lines12501 3/4" &1 1/2"Two 100 ft. lines &One 50 ft. line15002" &1 3/8"Three 100 ft. linesOne 50 ft. line17502 - 2"Two 100 ft. lines each20002 - 2"Two 100 ft. lines eachReference: NFPA 1911, Service Tests of Pumps on Fire Department Apparatus, 1911 Connect draft / suction hose and strainer (or adequate hydrant supply hose) to the intake of the pump. Make sure that all valves are closed and the suction hose is tight enough to maintain a seal. Place the suction hose in the water. Strainer must be at least two feet below the water surface. Start the pump and develop pressure. Once pressure is obtained (from draft) open the discharge valve(s) slowly to permit the flow of water. The main pump speed is gradually increased until the desired pressure at the pump is reached (150 psi). Check the flow at the nozzle with a pitot gauge or flow meter. If the flow is too great, partially close one (or more) gate valves. If the flow is too low, open the valve. Readjust engine speed to correct discharge pressure. Engine speed should not exceed 80% of its peak. When both the discharge pressure and the volume flowing are satisfactory, the test begins and runs for 20 minutes. Record the pump discharge pressure, nozzle pressure, engine tachometer when the test begins and at 5 minute intervals throughout the complete test. Automatic relief valves should be disengaged during the test. After the first portion of the test is completed, the pump pressure should be raised to 200 psi and the test run for 10 minutes to complete the third portion of the test. The pump pressure should be raised to 250 psi. See examples on the next page.
1000 gpm pump 6 inch suction 20 feet Pump Pressure GPM Nozzle Tip Discharge Hose Pitot Reading150 psi 1000 2" 3 x 100 ft 72 psi200 psi 700 1 3/4" 2 x 100 ft 60 psi250 psi 500 1 1/2" 1 x 100 ft 58 psi 750 gpm pump 5 inch suction 20 feet Pump Pressure GPM Nozzle Tip Discharge Hose Pitot Reading150 psi 750 1 3/4" 2 x 100 ft 68200 psi 525 1 1/2" 1 x 100 ft 62 psi250 psi 375 1 1/4" 1 x 100 ft 66 psi 500 gpm pump 4 1/2-inch suction 20 feet Pump Pressure GPM Nozzle Tip Discharge Hose Pitot Reading150 psi 500 1 1/2" 1 x 50 ft 58200 psi 300 1 1/4" 1 x 50 ft 58 psi250 psi 250 1" 1 x 50 ft 72 psi The following formula can be used to convert nozzle pressure to gallons per minute.GPM = 29.83 c d2 npC= coefficient of discharge nozzleD = diameter of nozzle in inchesP = pressure of flow (pitot reading) Example: Diameter of nozzle 2" Nozzle pressure 72 psi Coefficient of nozzle 0.99 GPM = 29.83 x 0.99 x 2" squared x square root of 72psiGPM = 29.83 x 0.99 x 4 x 8.485 = 1002 gpmGPM = 1002 If you do not want to use the formula above see Table B, which gives the nozzle pressure for smooth bore nozzles.
Discharge Table for Smooth Nozzles(nozzle pressure measured by pitot gauge)NozzlePressure(psi)GPMNozzle diameter (inches) 1 1 1/8 1 1/4 1 3/8 1 1/2NozzlePressure(psi)GPMNozzle diameter (inches) 1 1 1/8 1 1/4 1 3/8 1 1/25668410312514960229290357434517672921131371636223329536344152577899122148176642372993694485338841061311581886624030437545554298911213916820068244308381462542109311814617721170247313386469558121021301601942317225131839147556614110140173210249742543223974825741611815018522426776258326402488582181251591962372837826133040749458920132167206250298802643354135005962213917521626331382268339418507604241451832262753278427134342351361126151191235286340862743474285196182815719824429735388277351433525626301622052533073659028035543853163332167212261317377922833594435376403417221826932738994286363447543647361772242773364009628936745254965438182231285345411982923704565546604018723729235442210029537446156066742192243299363432105303383473574683441962483063724421103103924845886994620025431338045211531740149560071548205259320388462120324410505613730502092653263964721253314185166267455221327033340448113033742752663876054217275339412490135343435536650775562212803154194991403504435466627895822528535142650814535645055667480360229290357434517150362458565686817
SAMPLE PUMP TEST DATAThis is for annual service testing only. This test is not a UL or acceptance test! ______Somewhere________ FIRE DEPARTMENT F.D. or Unit No. __E-2 Make _Pirsch___ Year Built _1995__ Witnessed by _Chief Chavez____ Test Location __City Pump Station Elevation _3800'_ Draft_X_ Hydrant ___ residual psi_____(Draft is preferred, but a hydrant test is acceptable) Specifications: _250_ gpm @ 150 (120) psi _100% _175_ gpm @ 200 psi _70_% __125 gpm @ 250 psi _50_ %(Obtain this information from the metal or plastic tag usually located on the pump panel) First Test - Capacity - Layout - 20 minutes 2nd test - 200 psi - Lay out - 10 minutes 2 " Hose length _50'Tip #1 = 1 1/8 inch 2 " Hose Length _50'_ Tip #1 = 1 1/8 inch2 " Hose length ____Tip #2 = _____ inch 2 " Hose length ______ Tip #2 = _____ inch TimePump Pressure psiPitot Reading psi TimePump Pressure psiPitot Readingspsi InletDischargeNo. 1No. 2 InletDischargeNo. 1No. 20900 17045 0925 21622 0905 17145 0930 21622 0910 17246 0935 21622 0915 17246 0920 17246 Average 21622 3rd test - 250 psi - layout - 10 mins. 2 " Hose Length __50'_ Tip #1 = _1 1/8 inch2 " Hose length ______ Tip #2 = _____ inch 0945 25511 0950 25511 0955 25511 Average 17246 Average 25511 Summary TimeMins.No. 1 NozzleNo. 2 NozzleTotalPumpLiftNet Press.PsiCorr.PsiDisch.GPMPress.PsiCorr.PsiDisch. GPMDisch.GPMPress.PsiCorr. PsiPsiPress.psi1st test204646254 254172170 1502ndtest102222175 175216215 2003rdtest101111123 123255255 250