ML20140E243

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Rev 0 to W04536-01, Performance Contracting,Inc ECCS Sure- Flow Strainer Data Rept
ML20140E243
Person / Time
Site: Brunswick  Duke Energy icon.png
Issue date: 12/31/1996
From: Kaufman A
CONTINUUM DYNAMICS, INC.
To:
Shared Package
ML20140E210 List:
References
WO4536-01, WO4536-01-R00, WO4536-1, WO4536-1-R, NUDOCS 9706110287
Download: ML20140E243 (29)
v • d • e


Text

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. .- C.D.I. Technical Note No. %22 l'

Performance Contracting, Inc.

ECCS Sure-Flow Strainer Data Report Revision 0 ,

WO453 6-01 December 1996 Preparea by Continuurn Dynamics, Inc.

P.O. Box 3073 Princeton, New Jersey 08543 Project Vianager t .

Andrew E. Kaufhlan Authors Andrew E. Kauftnan Robert W. Diertl Richard G. Louderback Prepared for Electric Power Research Institute -

3412 Hillview Avenue Palo Alto, California 94304 l EPRI Project Manager

! Leonard Loflin Plant Support Engineering i

9706110287 970605 PDR ADOCK 05000324 O PDR

l L DIS C L AIME R OF WARRANTIES AND . LIMITATION OF -

L LI A BILITIES l

THS REPCRTWAS PEPAED BYTEOR3ANEMDr(S NAM ED BEIW AS AN ACCCUf/TOFWCRKSFCtSG D OR CGFONSCRE BYTE ELECTRC PCWiFIREEAFCH INSTITUTE,ltC. (EPR). NErrHER ERL ## MEMER OF E RL

    1. CGFOtGCR,TEOFGANZATCN(S BE.CW,NCR ANY PERON ACTNG ON BEHALF 0F##0FTEM:

l (A)MAKEN#WARRANTYORREPE!ENTMONWHA13CEWR E)PESSORlWUED,(QWITHREPECTTOTEUE OFN#iffGMATICN, AFPARATUS.MEih00,PFCCESS, OR SMUR ITEM DSCLCSED IN THS REPGT,PCLUDFG MERCH#4TABUTYNO Fi'ESS FCR APARTICULAR PURRXE,OR (1)THAT SLCH UE D S NoritFRPGE ON OR INTEREREWITH PRVATELYOWNED RGHTE !NCLUDfG ANY PARTM INTElECTUAL PROERTY, OR (IQ THAT THS R EPCRT IS SLATAH.ETO ANY PARTIQJLAR U ER S C RCUMSTNC E 01  !

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(Q ASStME RESFONSBUTY FCR ## DAMAGS OR OTHER LMBUTY WHATSGWR (NCLUDNG ##

CCNEQJENTIALD#4 AGES, E\CN IF EmlOR ANYERl R EPESENTATUEHAS BEN ADVSD OF TE PCSSBUTY OF SLCH DAM AGES) RESULTltG FFCM YCUR SELECTICN OR U EOFTHS REPCRT OR At#1NFCRMATIO4, AFPARATUS, M ETHOD,PFCCESS.OR SM UR ITEM D SCLCSE IN THS REPCRT.

l ORGAN ZATON(S THAT PEPAPED TH S R EPCRT l l

Cont!ruten Dyrarrics,Inc.

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I l ORD ERIN G INFORMATION .

Requests for ecpies cf this report should be directed to the EPRI Distribution Center,207 Coggins Drive, P.O. Ecx 23205, Pleasant Hill, CA 94523, (510) 934-4212. There is no charge for reports  ;

re;uested by EPRI mernber utilities.  !

Eec .: Dower Fosearen Ins:tute and EPRI are regis:ered service rnarks of E!actric Power Research Institute, Inc.

2 0:;yrignt 1995 E!ec:nc Power Research insttute,Inc. M rights reserved.

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ABSTRACT i a 1 l

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A Performance Contracting, Inc. (PCI) Sure-Floww trainer s was tested under a variety of debris and flow conditions in the Boiling Water Reactor Owners' Group (BWROG) test facility at the EPRI facility in Charlotte, North Carolina. The stramer  ;

was tested with fibrous insulation, simulated corrosion products, and reflective i metal insulation (RMI). This report documents the head loss results from the five tests conducted in October 1996.

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CONTENTS i 1

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! i 1 1 T 0 DUCT O .................................................................................1-1 i 1

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I 2 T E S T . F A C I LI T Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i I n s t ru m e n t a ti o n ... ... .. . . . . . . . . . .. ... . .. . ..... ...... . .. . .. . . . . . . . . . . .. . . . . .. . . . . . . . . . .. . .. . .. . .. . .. . .

Strainer..................................................................................................................................2-2 i D e b ri s M a t e ri al s . . . .. . . . . . . . . .... .. . .. . . . ... .... . . . . . . . . . . . . . .. . . . . .. . . . .. . . ... . . .. . .. . . .. . . . .. . . . . . i.

l S urnrn ary o f Te s t P roc e d u re s ..................................... ..................................... ................ . 2 -3 l ,

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3 TEST MATnwA....................................................................................3-1 I l

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4 4TESTDATA........................................................................................4-1 RunPCl1..........................................................................................................................4-1 RunPCl2...........................................................................................................................4-2  :

1 RunPC13..........................................................................................................................4-2 RunPCl4..........................................................................................................................4-2 .

RunPCI5.............................................................................................................................4-2  :

5QUALiTYASSURANCE......................................................................5-1 i

L 6 REFERENCES....................................................................................6-1 i

r ADATAPLOTS.......................................................................................A-1 l

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l LIST OF TABLES Table 2-1 Ins trum en t Lis t ... .. ...... ........... . .. . .. . . . . . .. .. .. . .. . ....... . ...... .. .... . .......... .... .. .. ... 2-2 1 Table 3-1 PCI Sure-Flowm S trainer Tes t Ma trix .. ...... ........ ... ... ... . ................ . .. . 3-1 .

Table 4-1 Steady S tate Tes t Data ....... . . ............. ......... .... ... . ....... .. ...... ............ 4-2 i 1

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A LIST OF FIGURES Figure 2-1 Schematic of test facility.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5 Figure 2-2 Schematic of instrument locations.... . ..... .. . . . . . .... . .. . . ... 2-6 Figure 2-3 Photograph of Sure-Flowm Strainer.. . . . . . . . . . . . . . . .... . . 2-7 Figure 2-4 Sketch of Sure-Flowm Strainer. . . . .. . . . . . . . . . . . . . . . . . . . . ... 2-8 Vii

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1 INTRODUCTION In the event of a Loss of Coolant Accident (LOCA) in a Boiling Water Reactor J (BWR) nuclear power plant, insulation installed on piping can reach the wetwell which supplies water to the Emergency Core Cooling System (ECCS). This insulation combined with corrosion products and other debris can migrate and block strainers installed on suction lines supplying the ECCS pumps. Relatively sma'l amounts of glass fiber insulation combined with corrosion products have been shown to result in significant pressure drop across a strainer screen. An alternate suction strainer design, the Sure-Flow" strainer, was provided by PCI to evaluate its performance under different flow and debris loads. From 28 through 30 October 1996, Continuum Dynamics,Inc. conducted a series of tests on this strainer.

l Tests were conducted at the Electric Power Research Institute Non Destructive l Evaluation Center in Charlotte, North Carolina.

Testing was conducted following the Plan for Testing PCI Strainer, Revision 1,28 October 1996 (Ref.1). Test procedures and materials essentially duplicated BWROG procedures and materials for strainer testing.

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Test Facility 2- -

l TEST FACILITY A schematic of the test facility is shown in Figure 2-1. The strainer was mounted honzontally to a 24 inch tee in a nominally 50,000 gallon vessel. Typically, the (

vessel was filled with 40,000 gallons of water. Two centrifugal pumps capable of producing 10,000 GPM were used to provide system flow controlled by valves on the pump outlets. The flow returned to the vessel through a venturi and then through a pipe whose exit was centered in the vessel and directed down toward the floor.

This pipe orientation prevented material from settling on the vessel floor.

The piping configuration also allowed the strainer to be backflushed. Backflush flowrates up to 5000 GPM can be obtained, but backflush duration is often limited because debris from the vessel can be pulled inside the strainer because of the location of the backflush inlet pipe (see Figure 2-1),

instrumentation A schematic illustrating the instrument locations is shown in Figure 2-2. The head loss across the strainer and debris bed is measured by a Rosemount 1151 smart

! differential pressure transmitter that is connected to the blind flange of the strainer tee. The flow rate is measured by the venturiin the return leg of the piping and another a Rosemount 1151 smart differential pressure transmitter. The outputs of these transmitters were connected through Sensotec GMA displays and amplifiers (0.2% accuracy) to a computer controlled DATAQ DI-22012 bit data acquisition

! system.

Fiber, simulated corrosion products and RMI were weighed on an Ohaus i

model DSIOL scale and water temperature was measured with a thermometer.

Table 2-1 lists the instruments used in the test program.

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l Test Facility '

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Table 2-1 ,

Instrurnent List -

Symbol instrument Range Accuracy Comment DP1 Differential 0-650 inches +/- 1 inch of Strainer head Pressure of water water loss.

Transmitter DP3 Differential 0-250 inches +/- 0.4 inches Used with Pressure of water of water venturi '

Transmitter (+/- 300 GPM accuracy). (

A/D Data 0-5 volts +/ .025% Record Acquisition pressure and '

flow data.

T1 Thernometer 35-120 +/- 3 degrees Water degrees F F temperature commercial grade.

B1 Balance 0-100 pounds + /- 0.5 Weigh debris pounds commercial grade.  ;

Strainer A photograph of the PCI Sure-Flowm strainer is shown in Figure 2-3. A sketch j of the strainer showing some important dimensions is shown in Figure 2-4.

I Debris Materials NUKONS Base WoolInsulation was used as the fibrous insulation for this test program. The insulation was supplied, prepared and weighed by PCI and supplied ,

l in 25 pound bags. Samples of the insulation were collected to provide an estimate of the size distribution. An analysis of the shredded fibers showed a similar size distribution as was used in the BWROG tests.

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Test Facility Black Iron Oxides obtained from Hansen Engineering,Inc. were used to simulate corrosion products with a distribution of 95% Grade 2008 and 5% Grade 9101-N-40 by weight .

Reflective Metal Insulation (RMI) was also used during testing. Stainless steel foils with a thickness of 2.5 mils were supplied by Darchem Engineering, Ltd. The foils were cut into nominally 3/8,3/4,1.5,3, and 6 inch squares and then crumpled to simulate RMI debris. The material was purchased and processed by EPRI. Based on EPRI documentation, the two smallest size categories were crumpled by the garden / leaf shredder and the remaining sizes were crumpled by band. The resulting RMI debris was similar to the RMI used in the BWROG tests.

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Summary of Test Procedures The test procedures duplicated the test p:ocedures used in the BWROG strainer tests. The procedures are sununarized below.

The main test procedure defines the steps necessary to perform one complete test for measuring strainer head loss. The main steps in this procedure include system start up, material addition, data acquisition, flow rate control, backflushing and test temunation. Data acquisition is started before the pumps are turned on and material is added to the vessel after the flow rate has been established. The time of material introduction is recorded. The amount of material added is determined by the test matrix. Simulated corrosion products are always added first and allowed to mix in the vessel before the other debris is added. Simulated corrosion products are added dry, while shredded fiber is soaked first to ensure it will sink.

Dunng a test the flow rate is maintained at a nearly constant value determined by the test matrix, unless the strainer maximum pressure drop is reached or the manmum pump flow is achieved. After the strainer head loss has reached approximately steady state, the flow rate can be adjusted down and up (a flow sweep) to obtain head loss at different flow rates, and if required, the strainer can be backflushed. The strainer is backflushed by shutting off the pumps and reconfigunng the valves so that pump #2 can pull water from the backflush line into the strainer. Pump #2 is turned on and then the backflush valve is opened until the backflush gauge reads the pressure corresponding to the desired flowrate.

Tne flow is then maintained at this flowrate for the desired time. A run is ter:ninated when the strainer head loss reaches approximately steady state or a determined value of head loss has been achieved (after conducting eny required fhw sweeps or backflush). After test termination, a backup copy of the digitally recorded data is made and the ending water temperature is taken.

l Daily procedures are followed to check the differential pressure transducers and l data acquisition system. Differential pressure cell zeros and known water height readings are taken and compared to the transducer output. The output of the data 2-3

Test Facility .

acquisition system is also checked to insure it is operating correctly and that the

, instruments are correctly connected. Periodic confidence checks on the scales and thermometer are also conducted as required.  !

i i Also associated with each main test procedure is a material preparation procedure which defines how much materialis to be added to the vessel. This l' procedure defines the methods to identify and quantify the fibrous insulation, simulated corrosion products and other debris to be used for each test. Samplds of fibrous insulation prepared by PCI were taken to characterize its size distribution.

RMI was provided by EPRI in boxes marked with th.e square feet of area and was not weighed. All material used in the program is identified by a unique number.  ;

Data is stored on disk as voltages from the differential pressurc transducers.

Using the calibration curves for each instrument, the voltages are converted to engineering units (either inches of water or' gallons per minute). The clean head i loss as a function of flow rate is subtracted from each head loss data point to obtain the head loss across the debris bed. The data is plotted in Appendix A as a funct:on  ;

of time and approximate steady state values are tabulated in Section 4.  ;

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Test Tacility ~

PLAN VIEW OF VESSEL AND PIPING rtov CONTROL NOT TO SCALE -

VALVCS FILL / DISCHARGE EXTERIOR VALL VALVES /

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ISOLATION VESSEL PENETRATION VALVES EL. APPROX. O' Figure 2-1 Schematic of test facility.

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VALVES DISCHARGE Figure 2-2 Schematic of instrument locations.

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j Figure 2-3 Photograph of Sure-Flowm Strainer.

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Figure 2-4 Sketch of Sure-Flow" Strainer.

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TEST MATRIX 4

The test matrix is shown below. It was modified from the preliminary matrix shown in the test plan based on PCI requirements.

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Table 3-1 PCI Sure-Flow Strainer Test Matrix ,

Run Mass Fiber Mass C.P. RMI Comments (Ibm) (Ibm) (feet *)

1 0 0 0 Clean head loss over full flow range.

2 25 100 800 RMI test with fiber, debris bed made at 5000 GPM.

3 100, 150, 0 0 Incremental Material Addition, debris bed was 200, 250, made at 4000 GPM for last addition.

300 4 100 100 0 i Debris bed made at 5000 GPM 5 200 100 0 Boston Cd#$8?=hh test, debris bed made at 4400 GPM and reduced to 4000 GPM.

Tne flow sweep at the end of each run was modified to provide additional data '

points for most runs as shown in Section 4 and in Appendix A.

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4 TEST DATA-L Table 4-1 summarizes the data collected from the test program. The table contains specific information about each test including run number, run date, flow $

l rates tested, mass of insulation and corrosion products used (if applicable), amount of RMI, the average water temperature and the steady state differential pressure across the strainer (head loss) for that condition. All of the tabulated head loss' values represent the head loss across the fiber / debris bed. The head loss of the clean strainer has been subtracted (except for the baseline, clean strainer case.)

Flots for each of the runs are included in Appendix A. The plots show the strainer differential pressure and the corresponding flow rate as a function of time.

Material addition times and other run specific notes are indicated on the plots. The

. strainer differential pressure represents the head loss across the debris bed only,

" clean" head loss has been subtracted out.

The data contained in the tables and the plots in the Appendix have been verified according to C.D.I. Quality Assurance procedures. Notes for each run are provided below.

Run PC11 Tne first run was conducted from 1250 GPM to 10,000 GPM with no debris in the tank. From these data the clean head loss as a function of flow rate is determined so that the clean strainer head loss can be subtracted at any flow rate.

This clean head loss run was conducted with a lower water level than usual to check if air would be sucked in from the free surface. The centerline of the strainer

.was 95.5 inches above the tank floor, and the water level was measured at .

165.8 inches by the DP1 transducer, which was mounted approximately 8 inches above the tank floor. With approximately 58 inches of water above the top of the strainer, no vortexing (or air being sucked into the strainer from the free surface) was visually apparent over the range of tested flowrates.

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, . Test Data l l

Run PCl2 .

This test was run with 25 pounds of fiber,100 pounds of corrosion product and 800 square feet of RMI. The RMI was evenly divided into 3/8,3/4,1.5,3 and 6 inch square pieces that were crumpled. After the corrosion products were added and  !

allowed to circulate the fiber and RMI were added together.

Run PCl3 l This test was conducted with fiber alone. The initial increment was 100 pounds, subsequent increments were 50 pounds. Fiber was added after approximately steady state head loss was reached for each increment. The head loss increased essentially d linearly for each 50 pound increment, see Table 4-1 and Appendix A. 1 Run PCl4 This test was conducted with 100 pounds of fiber and 100 pounds of corrosion l products.

l Run PCl5 l This run was conducted with 200 pounds of fiber and 100 pounds of corrosion l products. Initially, the flow rate was set at 4400 GPM to form the debris bed. The  ;

flow rate was reduced to 4000 GPM to maintain the head loss below the maximum ,

allowed for the strainer.

l Table 4-1 Steady State Test Data Run Date Flow InsulationCorrosion RMI Recipe Head Avg. Comments Rate 2  % Loss H2O (Ibs) Products (ft ) j (GPM) (Ibs) (in. Temp '

H2O) (oF)  !

FC1 lof2s 5000 - - - -

0[6] 69 Baseline clean '

strainer. q

[]- Denotes head l loss across clean strainer, j l

PG1 10/23 1250 - - - -

0 [0.2] 69

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Test Data Table 4-1 -

Steady State Test Data Run Date Flow InsulationCorrosion RMI Recipe Head Avg. Comments Rate (lbs) Produc:s (ft2)  % Loss HO2 (GPM) ,

(Ibs) (in. Temp H2O) (ap)

PG1 10/28 2500 - - - -

0[1] 69 PG1 10/23 3750 - - - -

0[3] 69' PG1 10/2s 6250 - - - -

0 [10] 69 PG1 10/2s 7500 - - - -

0 [15] 69 PG1 10/23 8750 - - - -

0 [20] 69 PG1 10/23 10000 - - - -

0[24] 69 PG2 10/2s 5000 25 100 800 -

28 70 PG2 10/2s 2500 25 100 800 -

11 70 PG2 10/2s 3750 25 100 800 -

19 70 PG2 10/2s 6250 25 100 800 -

33 70 PG2 10/2s 7500 25 100 800 -

35 70 PG2 10/2s 8750 25 100 800 -

42 70 PG2 lo/2s 10000 25 100 800 -

52 70 PG2 10/23 5000 25 100 800 -

23 70 Ap increasing slowly. -

FG2 10/2s 5000 25 100 800 -

29 70 Approximate steady state value after shutting off l .

pump for one l

minute and restarting.

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, Test Data Table 4-1 ~

l Steady State Test Data

.Run Date Flow InsulationCorrosion RMI Recipe Head Avg. Comments Rate (Ibs) Products (ft )

2  % Loss HO 2 (GPM) (Ibs) (in. Temp H2O) (*F) .

PG3 10/29 5000 100 - - -

73 71 FG3 10/29 5000 150 - - -

121 71 PG3 10/29 2500 150 - - -

56 71 PC3 10/29 3750 150 - - -

91 71 PG3 10/29 5000 150 - - -

119 71 PC3 10/ 29 5000 200 - - -

166 71 PC3 10/29 2500 200 - - -

74 71 PQ3 10/29 3750 200 - - -

127 71 1

PG3 10/29 5000 200 - - -

166 71  !

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PG3 10/29 5000 250 - - -

214 71 i PG3 10/29 2500 250 - - -

100 71 PG3 10/29 3750 250 - - -

164 71 1

FC I3 10/29 3750 300 - - -

194 71 PG3 10/29 4000 300 - - -

200 71 PQ3 10/29 2500 300 - - -

116 71 ,

PC3 :o/29 4100 300 - - -

211 71 l

l PG4 10/29 5000 100 100 - -

147 70 j l

PG4 10/29 2500 100 100 - -

65 70 ,

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Test Data

! Table 4-1 .

Steady State Test Data l

I Run Date Flow InsulationCorrosion RMI Recipe Head Avg. Comments Rate 2 (Ibs) Products (ft )  % Loss H2O (GPM) (Ibs) (in. Temp H2O) (ap) l PG4 10/29 3750 100 100 - -

104 70 PG4 10/29 6200 100 100 - -

177 70 PG4 10/29 6900 100 100 - -

206 70 PG4 10/29 5000 100 100 - -

144 70 PG5 10/30 4000 200 100 - -

232 71 Removable perforated end plate covered with solid plate for run PG5.

PG 10/30 2500 200 100 - -

129 71 PG5 10/30 3000 200 100 - -

157 71 PG5 10/30 3500 200 100 - -

200 71 1

PG5 10/30 4000 200 100 - -

231 71 l

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QUALITY ASSURANCE $

All quality related test activities were performed in accordance with the l Continuum Dynamics, Inc. Quality Assurance Manual, Revision 12 (Ref. 2). Quality I

related activities are those which are directly related to the planning, execution and objectives of the tests. Supporting activities such as test apparatus design, fabrication and assembly are not controlled by the C.D.I. Quality Assurance Manual. C.D.I.'s Quality Assurance Program provides for compliance with the reporting  ;

requirements of 10 CFR Part 21. All instrument certification and calibration, test '

precedures, data reduction procedures and test results will be contained in a Design Record File which (upon completion) will be kept on file at C.D.I. offices.

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I REFERENCES

1. Continuum Dynamics, Inc., Plan for Testing PCI SureFlow Strainer, Revision 1, 28 October 1996.
2. Continuum Dynamics, Inc., Quality Assurance Manual, Revision 12, October 1996.

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DATA 1 PLOTS l 3

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t Plots of head loss across the debris bed and flow rate are all runs, except PCII, the clean head loss is subtracted from the total meas i loss to provide the head loss across the debris bed. Head loss is measure of water and flow rate is measured in gallons per minute (GPM). s i

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A-1 i

  • Data Plots l

Run PC11: PCI Siare-Flow Strainer No Materials Used in Test i Clean Strainer l

l l , 3 0 --

~~

  • Z

{ hb g 20--

=5 5 m15-- '

t5

! 5 E10--

l 58 ,

M l

5 --

l 0 .  : ,

O 5 10 15 20 '

Time (minutes) l i

l I

12000 7

=?

10000l . 1 e[ 8000I

$ 6000 l c:

3

' o 40001

[

2000

/

l 0  :  :  :

0 5 10 15 20 Time (minutes)

Figure A-1 Head loss and flow rate versus time for run PCII.

A-2 1

1

E l.

Data Plots Run PCl2: PCI Sure-Flow Strainer 25 lbs Nukon insulation 100 lbs Corrosion Products 800 ft' RMI 60 - .

3 ,_, 5 0 + t100 lbs corrosion products added 1 c2 25 lbs Nukon and SI 40 A 3e t 800 ft' RMI 5I 30 A added tE

,e g

~

20 ,-

ee 50- 10 0

- YYj. --

0 20 , ,

40 60 80 100 120 Time (minutes) 12000-}. Pump shut off at \

5000 GPM 10000 -l for - 1 minute and then restarted

[ 8000 'i e

C$ 6000tL. y 3: F ,

i S

u. 4000 -- '! -.

2000 --

0 '

O 20 -:

40 60 80 100 120

\

' Time (minutes) i Figure A-2 Head loss and flow rate versus time for run FCI2.

s A-3 l

l

  • Data Plots Run PCl3: PCI Sure-Flowm Strainer 100, 150, 200, 250, 300 lbs Nukon insulation l No Corrosion Products  !

, 100 lbs Nukon added g 250..h @ -

h' @h 50 lbs Nuk added l

= sg 200 -- ,p

.t_ 5 15 0 -

O o y

g 100-- y i w.

jE 5 0 -l-0 Y . . .

0 50 100 150 200 250 300 Time (minutes) 6000 -

5000 W / --,n t ? M~is --,

"g;r ' .1 S

c. 4 0 0 0 -- l' "

. W l q }

-r l

$ 3000 --

c i i  !!:

I l .o 2000 --

l '

1000 -- l 0  :  : ,

J 0 50 100 150 200 250 300 I Time (minutes)

Figure A-3 Head loss and flow rate versus time for run FCI3.

A-4 l

l 1

I

Data Flots Run PCl4: PCI Sure-Flow Strainer 100 lbs Nukon insulation 100 lbs Corrosion Products 250 --

a 100 lbs corrosion products added 100 lbs Nukon added S

wI e 150--

k

= c, Q I#

s.$100--

85 3[ 50--

5 YY 1

0 .

0 20 40 60 80 100 120 Time (minutes) i Pump shut off at 5000 GPM for 8000 I -1 minute and then restarted Pump shut off at i

5000 GPM for 7000 1 ,

-3 minutes and l then restarted 6000 -

F l l g5000 9==- -=- = ' '

  • V y ,

f~

$ 4000 --

c a

$ 3000 --

u.

2000 --

1000 -- -

0  :

i  ;

O 20 40 60 80 100 120 Time (minutes)

Figure A-4 Head loss and flow rate versus time for run PCI4. I A-5 l

! I

l l

i ' Data &ta -

i Run'PC15: PCI Sure-Flow Strainer I

200 lbs Nukon Insulation 100 lbs Corrosion Products  ;

Perforated End Plate Covered with Solid Plate 250 "100 lbs corrosion products added ,

i 7{200 3

EI

- 200 lbs Nukon

[ .

l- $ 5150 -- added ,

i 35 -

II $ 100 --

.5 m 1

22 5 c- 50 -

l o VV .

1 .

l 0 20 40 60 80 100 Time (minutes) 1 Pump shut off at 4000 GPM for 5000 - -5 minutes and then restarted 4500 ,g , 5 4000 -- -

_ :3 - iz z ~

g3500,- F c-i E 3000T F

$2500

  • c: i g 2000 -l 1

9

, ' 1500i l  !

1000t .

500 -

0' '

l l 0 20 40 60 80 100 Time (minutes)

Figure A-5 Head loss and flow rate versus time for run PCIS.

A-6 t

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