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Non-proprietary W Topical rept,WCAP-14325, Final Data Rept for ADS Phase B1 Tests
	ML20083A208
Person / Time
Site:	05200003
Issue date:	04/30/1995
From:	; WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:	;
Shared Package
ML20083A201	List: ML20083A205; ML20083A208; NRC-95-4424, Forwards Proprietary W Topical Rept WCAP-14324, AP600 Design Certification,Ads Phase B1 Tests,Final Data Rept, RCS-T2R-100 & non-proprietary W Topical Rept WCAP-14325. Proprietary Portion of Document Sent to Westinghouse;
References
	WCAP-14325, NUDOCS 9505100104
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L, WCAP-14325 FINAL DATA REPORT FOR ADS PHASE B1 TESTS April 1995 WESTINGHOUSE ELECTRIC CORPORATION ENERGY SYSTEMS BUSINESS UNIT ADVANCED TECHNOLOGY BUSINESS AREA P.O. BOX 355 PITTSBURGII, PENNSYLVANIA 15230 01995 Westmghouse Electric Corporation a%A1776w. son:1b.042495

y .o; I 3, o.: } TABLE OF CONTENTS 't Section Title .Page -[

SUMMARY

1 i i

1.0 INTRODUCTION

1-1 1.1 Test Objectives 1-3 1.2 Test Matrix l-4 i t i 2.0 ' 'IEST FACILITY DESCRII'llON 2-1 2.1 Components 2-1 2.2 Instrumentation 2-10 1 2.3 Data Acquisition Systems 2-22 l 2.4 Control and Safety Systems 2-24 2.5 Facility Operation and Quality Assurance 2-26 3.0 DATA REDUCTION AND ANALYSIS 3-1 l 3.1 Data Handling 3-1 3.1.1 IBM Data 3-1 [ 3.1.2 Prosig Data 3-1 3.2 Error Analysis 3-5 f 3.3 Test Evaluation 3-5 j 3.3.1 Test Acceptance Criteria 3-5 3.3.2 Test Analysis 3-6 j 4.0 ADS PHASE B1 TEST AND TEST RESULTS 4-1 4.1 100-Series Tests 4-2 4.1.1 General 100-Series Test Procedure 4-2 4.1.2 100-Series Test Results 4-3 i 4.1.3 Summary of Evaluation of 100-Series Tests 4-5 ? 4.2 200-Series Tests 4-23 1 4.2.1 General 200-Series Test Procedure 4-23 4.2.2 200-Series Test Results 4-24 4.2.3 Summary of Evaluation of 200-Series Tests 4-28 4.3 300-Series Cold Quench Tank Tests 4-79 4.3.1 General 300-Series Cold Quench Tank Test Procedure. 4-79 4.3.2 300-Series Cold Quench Tank Test Results 4-80 4.3.3 Summary of Evaluation of 300-Series Cold Quench Tank Tests 4-83 I u.4po0(N 776w.non:1b-042195 iii

c, ;. TABLE OF CONTENTS (Cont.) Section Title M 4.4 300-Selies Hot Quench Tank Tests 4-121 4.4.1. General 300-Series Hot Quench Tank Test Procedure 4-121. 4.4.2 300-Series Hot Quench Tank Test Results 4-122-4.4.3 Summary of Evaluation of 300-Hot Quench Tank Series Tests' 4-124 4.5 Summary of Phase B1 Test Program Results 4-149

5.0 CONCLUSION

S 5-1 6.0 REITRENCES 6-1 APPENDICES A DATA REDUCTION METHODS A-1 -B DATA ANALYSIS METHODS AND RESULTS B-1 C SELECTED DATA PLOTS C-1 D FAILED INSTRUMENT LIST D-1 E DATA ERROR ANALYSIS E-1 F ELECTRONIC DATA FILES F-1 n:W1776w.non:Ib-042195 iv f t

[- t LIST OF TABLES Table No. Title ,P_qge 1.2-1 ADS Phase B1 Text Matrix 1-5 1 2.1 1 ADS Package Piping Specifications 2-4 l 2.2-1. List ofInstruments 2-11 2.5-1 Instrument Modifications for Phase B1 Tests 2-27 1 3.1-1 Data Reduction Coefficients 3-3 3.3-1 ADS Phase B1 Test Specification Critical Instnamentation List 3-11 3.3-2 Mass Measurement Comparison 3-13 3.3-3 ' Valve VL1-2 Characterization Test Results 3-15 4.1-1 Summary of ADS Phase B1 100-Series Test Conditions 4-6 4.2-1 Summary of ADS Phase B1200-Series Test Conditions 4-30 i 4.3 1 Summary of ADS Phase B1300-Series Cold Quench Tank Test Conditions 4-85 4.4-1 Summary of ADS Phase B1300-Series Hot Quench Tank Test Conditions 4-126 4.5-1 Overview of ADS Test Article Performance 4-151 4.5-2 Comparison of Intended and Achieved Conditions 4-153 { 4.5-3 Summary of ADS Phase B1 Test Runs 4-153 J u:W1776w.non:Ib-042195 y

R-f LIST OF FIGURES Finure No. Title

_Pgge, 1.2-1 ADS Phase B1 Test Specification Plant Performance / rest Prediction Map for ADS Stage 1 Open 1-7 l

1.2-2 ADS Phase B1 Test Specification Plant Performance / Test Prediction Map for ADS Stages 1,2, and 3 Open 18 f 1.2-3 ADS Phase B1 Test Specification Plant Performancefrest Prediction Map for ADS Stages 1 and 2, or Stages 1 and 3 Open 1-9 1.2-4 ADS Phase B1 Test Specification Plant Performance / rest Prediction Map for ADS Stage 2 Open 1-10 l 2.1-1 VAPORE Plant Arrangement for Phase B1 Testing 25 2.1-2 VAPORE Facility Configuration for Steam Blowdown Tests 2-6 2.1-3 VAPORE Facility Configuration for Water Blowdown Tests 2-7 2.1-4 Orifice Simulating 4-in. Gate Valve (Stage 1) 2-8 e 2.1-5 Orifices Simulating 8-in. Globe Valves (Stages 2 and 3) 2-9 2.2-1 ADS Phase B1 Test Specification VAPORE Facility Process Piping & Instrumentation 2-15 2.2-2 Location of Sensors on Discharge Piping and in Quench Tank - Elevation View 2-17 2.2-3 Location of Sensors on Quench Tank and on Sparger Arms - Plan View 2-18 2.2-4 Location of Instrumentation on Sparger 2-19 2.2-5 Location of Strain Gauges on ADS Piping Loop 2-20 .2.3-1 VAPORE Facility Control and Data Acquisition System Computers 2-23 l 2.4-1 Control Sequence for Saturated Water Blowdowns 2-25 3.3-1 Comparison of Supply Tank and Venturi Mass Flow Calculations 3-16 3.3-2 Flow Area Versus Stem Travel for VLI-1 3-17 4.1-1 Mass Flow and Quality Measurements for Test A040110 4-7 4.1-2 Flow Path Pressure Plot for Test A040110 4-8 4.1-3 Sparger Temperatures for Test A040110 4-9 4.1-4 Quench Tank Temperatures for Test A040110 4-10 4.1-5 Mass Flow and Quality Measurements for Test A041120 4-11 4.1-6 Flow Path Pressure Plot for Test A041120 4-12 4.1-7 Sparger Temperatures for Test A041120 4-13 4.1-8 Quench Tank Temperatures for Test A041120 4-14 4.1-9 Mass Flow and Quality Measurements for Test A038130 4-15 4.1-10 Flow Path Pressure Plot for Test A038130 4-16 4.1-11 Sparger Temperatures for Test A038130 4-17 ) i I i u Asp 600uT76w. con:lt>042195 vi

LIST OF FIGURES (Cont.) Figure No. Title Page 4.1-12 Quench Tank Temperatures for Test A038130 4-18 4.1-13 Mass Flow and Quality Measurements for Test A039140 4-19 4.1-14 Flow Path Pressure Plot for Test A039140 4-20 4.1-15 Sparger Temperatures for Test A039140 4-21 4.1-16 Quench Tank Temperatures for Test A039140 4-22 4.2-1 Series 200 Tests Intended Performance Versus Achieved Performance for Stage 1 Operation 4-31 4.2-2 Series 200 Tests Intended Performance Versus Achieved Performance for Stages 1 and 2 and Stages 1 and 3 Operation 4-32 4.2-3 Series 200 Tests Intended Performance Versus Achieved Performance 4-33 for Stages 1,2 and 3 Operation 4.2-4 Series 200 Tests Intended Performance Versus Achieved Performance for Stage 2 Operation 4-34 4.2-5 A037210 Mass Flow / Quality 4-35 4.2-6 ADS Flow Path Pressure Plot for Test A037210 (ADS Stage 1 Only) 4-36 4.2-7 Sparger Temperatures for Test A037210 4-37 4.2-8 Quench Tank Temperatures for Test A037210 4-38 4.2-9 A026211 Mass Flow / Quality 4-39 4.2-10 ADS Flow Path Pressure Plot for Test A026211 (ADS Stage 1 Only) 4-40 4.2-11 Sparger Temperatures for Test A026211 4-41 4.2-12 Quench Tank Temperatures for Test A026211 4-42 4.2-13 A027212 Mass Flow / Quality 4-43 4.2-14 ADS Flow Path Pressure Plot for Test A027212 (ADS Stage 1 Open) 4-44 4.2-15 Sparger Temperatures for Test A027212 4-45 4.2-16 Quench Tank Temperatures for Test A027212 4-46 4.2-17 A030220 Mass Flow / Quality 4-47 4.2-18 ADS Flow Path I'ressure Plot for Test A030220 (ADS Stages 1 and 2 Open) 4-48 4.2 19 Sparger Temperatures for Test A030220 4-49 4.2-20 Quench Tank Temperatures for Test A030220 4-50 4.2-21 A028221 Mass Flow / Quality 4-51 4.2-22 ADS Flow Path Pressure Plot for Test A028221 (ADS Stages I and 2 Open) 4-52 4.2-23 Sparger Temperatures for Test A028221 4-53 4.2-24 Quench Tank Temperatures for Test A028221 4-54 4.2-25 ADS A031230 Mass / Flow Quality 4-55 4.2-26 ADS Flow Path Pressure Plot for Test A031230 (ADS Stages 1 and 3 Open) 4-56 4.2-27 Sparger Temperatures for Test A031230 4-57 4.2-28 Quench Tank Temperatures for Test A031230 4-58 4.2-29 A029231 Mass Flow / Quality 4-59 4.2-30 ADS Flow Path Pressure Plot for Test A029231 (ADS Stages 1 and 3 Open) 4-60 4.2-31 Sparger Temperatures for Test A029231 4-61 uAap600\\l776w. mon:1b-042195 vii

LIST OF FIGURES (Cont.) Figure No. Title P_ age 4.2-32 Quench Tank Temperatures for Test A029231 4-62 4.2-33 A035240 Mass Flow / Quality 4-63 4.2-34 ADS Flow Path Pressure Plot for Test A035230 (ADS Stages 1,2, and 3 Open) 4-64 4.2-35 Sparger Temperatures for Test A035240 4-65 4.2-36 Quench Tank Temperatures for Test A03524 4-66 4.2-37 A033241 Mass Flow / Quality 4-67 4.2-38 ADS Flow Path Pressure Plot for Test A033241 (ADS Stages 1,2, and 3 Open) 4-68 4.2-39 Sparger Temperatures for Test A033241 4-69 4.2-40 Quench Tank Temperatures for Test A033241 4-70 4.2-41 A034242 Mass Flow / Quality 4-71 4.2-42 ADS Flow Path Pressure Plot for Test A034242 (ADS Stages 1,2, and 3 Open) 4-72 4.2-43 Sparger Temperatures for Test A034242 4-73 4.2-44 Quench Tank Temperatures for Test A034242 4-74 4.2-45 Mass Flow / Quality for Test A036250 4-75 4.2-46 ADS Flow Path Pressure Plot for Test A036250 (ADS Stage 2 Open) 4-76 4.2-47 Sparger Temperatures for Test A036250 4-77 4.2-48 Quench Tank Temperatures for Test A036250 4-78 4.3-1 Series 300 Cold Quench Tank Tests Intended Performance Versus Achieved for Stages 1,2, and 3 Operation 4-86 4.3-2 Series 300 Cold Quench Tank Tests Intended Performance Versus Achieved for Stages 1 and 2 Operation 4-87 4.3-3 Series 300 Cold Quench Tank Tests Intended Performance Versus Achieved for Stage 2 Operation 4-88 4.3-4 Mass Flow and Quality for Test A044310 4-89 4.3-5 Flow Path Pressure Plot for Test A044310 (Stages 1,2, and 3 Operation) 4-90 4.3-6 Sparger Temperatures for Test A044310 4-91 4.3-7 Quench Tank Temperatures for Test A044310 4-92 4.3-8 Mass Flow and Quality for Test A002311 4-93 4.3-9 Flow Path Pressure Plot for Test A002311 4-94 4.3-10 Sparger Temperatures for Test A002311 4-95 4.3-11 Quench Tank Temperatures for Test A002311 4-96 4.3-12 Mass Flow and Quality for Test AM2312 4-97 4.3-13 Flow Path Pressure Plot for Test AM2312 4-98 4.3-14 Sparger Temperatures for Test A042312 4-99 4.3-15 Quench Tank Temperatures for Test A042312 4-100 4.3-16 Mass Flow and Quality for Test A0N330 4-101 4.3-17 Flow Path Pressure Plot for Test A0N330 4-102 l 4.3-18 Sparger Temperatures for Test A0N330 4-103 i f 4.3-19 Quench Tank Temperatures for Test AON330 4-104 i 4.3-20 Mass Flow and Quality for Test A003331 4-105 1 uAap600\\1776w.non:lt>.o42195 viii

a LIST OF FIGURES (Cont.) Figure No. Title ,P_ age L 4.3-21 Flow Path Pressure Plot for Test A003331 4-106 4.3-22 Sparger Temperatures for Test A003331 4-107 4.3-23 Quench Tank Temperatures for Test A003331 4-108 4.3-24 Mass Flow and Quality for Test A043331 4-109 4.3-25 Flow Path Pressure Plot for Test A043331 4-110 4.3-26 Sparger Temperatures for Test A043331 4-111 4.3-27 Quench Tank Temperatures for Test A043331 4-112 4.3-28 Mass Flow and Quality for Test A006340 4-113 4.3-29 Flow Path Pressure Plot for Test A006340 4-114 4.3-30 Sparger Temperatures for Test A006340 4-115 4.3-31 Quench Tank Temperatures for Test A006340 4-116 4.3-32 Mass Flow and Quality for Test A046340 4117 4.3-33 Flow Path Pressure Plot for Test A046340 4-118 4.3-34 Sparger Temperatures for Test A046340 4-119 4.3-35 Quench Tank Temperatures for Test A046340 4-120 4.4-1 Series 300 Hot Quench Tank Tests Intended Performance Versus Achieved Performance for Stages 1,2, and 3 Operation 4-127 4.4-2 Series 300 Hot Quench Tank Tests Intended Performance Versus Achieved Performance for Stage 2 Operation 4-128 4.4-3 Mass Flow and Quality for Test A051320 4-129 4.4-4 Flow Path Pressure Plot for Test A051320 4-130 4.4-5 Sparger Temperatures for Test A051320 4-131 4.4-6 Quench Tank Temperatures for Test A051320 4-132 4.4-7 Mass Flow and Quality for Test A048321 4-133 4.4-8 Flow Path Pressure Plot for Test A048321 4-134 4.4-9 Sparger Temperatures for Test AG48321 4-135 4.4-10 Quench Tank Temperatures for Test A048321 4-136 4.4-11 Mass Flow and Quality for Test A047322 4-137 4.4-12 Flow Path Pressure Plot for Test A047322 4-138 4.4-13 Sparger Temperatures for Test A047322 4-139 I 4.4-14 Quench Tank Temperatures for Test A047322 4-140 4.4-15 Mass Flow and Quality for Test A050350 4-141 ) 4.4-16 Flow Path Pressure Plot for Test A050350 4-142 4.4-17 Sparger Temperatures for Test A050350 4-143 4.4-18 Quench Tank Temperatures for Test A050350 4-144 4.4-19 Mass Flow and Quality for Test AG49351 4-145 4.4-20 Flow Path Pressure Plot for Test A049351 4-146 4.4-21 Sparger Temperatures for Test AG49351 4-147 4.4-22 Quench Tank Temperatures for Test A049351 4-148 4.5-1 Summary of ADS Phase B1 Test Conditions 4-157 aAmp600\\l776w.non:1b-N2195 ix

3

SUMMARY

This document presents the results of 28 automa*.ic depressurization system (ADS) Phase Bl tests conducted at the ENEA's VAPORE Facility at Casaccia. Italy, including the test data in engineering units with all calibration data incorporated in the data reduction. The tests provided thermal-hydraulic data on the behavior of an ADS for use in verification of analytical tools used in the analysis of the ADS design and operation. The tests were conducted over a wide range of test conditions that encompass the range of expected operating conditions of the AP600 ADS. 1 I i 1 l u Anp600\\l776w.usalbe42195 ]

1.0 INTRODUCT'.ON The AP600 is a Westinghouse advanced pressurized water reactor (PWR) designed with plant safety features that rely on natural driving forces, such as gravity, convection, and natural circulation, and allow significant simplification of the plant systems' equipment and operation. The plant is also characterized by a lower core power density than the standard PWR designs and an optimized reactor cooling system loop arrangement. The AP600 utilizes an automatic depressurization system (ADS) to depressurize the reactor coolant system (RCS) and initiate and maintain long-term gravity injection for passive reflood and core cooling. De ADS design consists of four flow paths, two of which are connected to the top of the pressurizer and a flow path from ex1, of the two RCS hot legs. During a loss-of-coolant accident (LOCA), the two flow paths from the hot legs discharge directly to containment. The two paths from the pressurizer discharge steam and/or water from the RCS into the in-containment refueling water storage tank (IRWST) through spargers located underwater; the steam is normally condensed with no increase in containment pressure or temperature. Each of the two pressurizer piping flow paths is made up of a 14-in. pipe, which connects to three parallel paths / stages (one is 4 in. and two are 8 in.), forming the ADS valve / piping package. Eoch of these three parallel paths have two normally closed valves in series. De three parallel paths connect to a single 16-in. discharge line, which ends at the submerged sparger. When the ADS is operated, the closed valves are sequentially opened to provide a staged, controlled depressurization of the RCS from operating conditions at 2250 psia /650 F to saturated conditions at approximately 25 psia. This staged valve opening limits the maximum mass flow rate through the sparger and the loads imposed on the quench tank, which is always maintained at containment pressure. 'Ihe AP600 ADS operation for each stage consists of first opening the upstream (isolation) valve, foll)wed by the opening of the downstream (flow control) valve. De ADS tests are one part of the planned AP600 Westinghouse test program for the passive core cooling system (PXS). The ADS tests are full-scale simulations of AP600 ADS components, which provide dynamic performance data of the ADS for use in computer code validation and design verification. The ADS tests were divided into two phases: Phase A and Phase B. Both phases were performed at ENEA's VAPORE Test Facility in Casaccia, Italy; the AP600 ADS test program is pad of a joint technical cooperation agreement between Westinghouse, ENEA, ENEL, and SOPREN/ANSALDO. The Phase A testing of the ADS sparger was performed between June and December of 1992. m Phase A tests provided data to evaluate the hydraulic behavior of the sparger under various steam flow rates. The test results were used to define the dynamic forcing functions generated by the flow and condensation of steam through the sparger and to evaluate dynamic loads that will be imposed on the actual AP600 IRWST during sparger operation. uAap600\\l776w.non:lb-N2195 1)

'2 i ^ ' Y.{

The ADS Phase B test was a full-sized simulation of one of the two AP600 ADS pressurizer flow l

paths from upstream of the ADS valves to the sparger and was intended to duplicate the operational r conditions of the ADS valves and sparger, j I - The Phase B test program was subdivided into two parts, B1 and B2: Phase B1 - Overall system performance tests with the ADS valves (or simulated valves) { fully open, required for design cenification l Phase B2 - ADS valve operability / demonstration tests, which will be used to develop ' l t functional requirements for the ADS valves and are not required for design l'; certification ne test specification for the Phase B1 test is provided in Reference 2. His repon presents the l Phase B1 test results. i l l l l l l f ~ I i i i l l f I } i -l [ P 5 nAnge1776w.nos:tb042195 1-2 I

.~.. ~ l 6 - 1 I i .1.1 - Test Objectives l l 'Ihe overall objectives for the ADS Phase B1 tests are to simulate the AP600 thermal-hydraulic

performance of the ADS following any design basis event and to generate experimental data for validation of the safety analysis computer codes used in support of obtaining design certification for -

l the' AP600 The specific objectives of the Phase B1 tests are to: l l . Collect thermal-hydraulic performance data with both single-phase steam and two-phase. steam / water flow to support development and verification of the analytical model of the ADS to be used in safety analyses evaluations of events for which the ADS is actuated. { Verify the design and proper operation of the ADS sparger at maximum two-phase mass l = 1 flow rates. Obtain additional quench tank pressure impulse data to verify the analytical model used to l establish the IRWST structural design over a range of single-phase steam and two-phase .i flow rates. l Simulate the AP600 plant piping (including elbows, tees, etc.) and ADS valves to identify / characterize the flow conditions that occur during full flow ADS operation over a l range of single-phase steam and two-phase mass flow rates. l t i l -l i i i I i h ~'l i l- ) 1 l i a:W1776w.non-ItWM2195 13 l

1.2 Test Program Matrix The ADS Phase Bl test program consisted of system performance tests on a full-sized replica of one of the two AP600 ADS pressurizer-to-IRWST flow paths. The test runs were performed with the ADS valves fully open and consisted of a blowdown of either pressurized saturated water or pressurized saturated steam from a steam / water supply tank through the ADS valve / piping package to a sparger in a quench tank at atmospheric pressure (simulated IRWST). The pressure upstream of the ADS valve / piping package, the flow rate, and fluid quality were controlled by valves upstream of the ADS valve / piping package and the initial supply tank water temperature. Each ADS stage in the AP600 plant has two valves in series, in the Phase B1 ADS tests, however, only one of two valves was installed in each stage of the simulated ADS valve piping package. De missing valve in each stage was simulated by a full piping bore spacer and an orifice in some tests, or by the spacer alone in other tests. He orifices were sized to simulate the resistance and flow area of the missing fully open ADS ulve. He full bare spacer was used to bound the minimum resistance of a gate valve. The Phase B1 test matrix was grouped into four test series, each series having a different purpose: 100-series - simulate AP600 plant ADS flow conditions when steam is vented from the top of the pressurizer, with the currently specified ADS valves fully open. 200-series - simulate AP600 plant ADS flow conditions when two-phase fluid is vented from the top of the pressurizer (after the steam space has vented), with the currently specified ADS valves fully open. 300-series - simulate AP600 plant ADS flow conditions when two-phase fluid is vented from the top of the pressurizer (after the steam space has vented), with maximum flow area values instead of currently specified stage 1 isolation valve and stages 2 and 3 globe valves. In addition, this test series investigated ADS performance with the IRWST water initiating at 212*F. i Within each series, a number of matrix tests were performed to achieve a range of quasi-steady-state mass flow and quality conditions. He test conditions were specified on the basis of NOTRUMP* analyses of the test facility, which established the initial supply tank pressure and flow control valve setting to achieve the desired flow rate and fluid quality at the ADS package inlet. The specified test matdx is shown in Table 1.2-1. Note that the initial conditions for some :natrix tests were revised during the test program and some tests were re-run. In addition, the control valve flow areas actually set in the tests were subsequently found to be different from the specification; the actual flow areas used are presented in the description of each test. The intended test points are shown on Figures 1.2-1,1.2-2,1.2-3, and 1.2-4, relative to an envelope of AP600 ADS conditions estimated from NOTRUMP analyses. In addition to the matrix tests a number of pre-operational cold water flow tests were performed to characterize the flow control valve. Rese tests are discussed in subsection 3.2.3.3 and Appendix B. u Aap60(A1776w.non:ltr042195 1-4

TABLE 1.21 ADS PIIASE BI TEST MATRIX Control Test Supply Valve Matrix Tank Flow Facility Configuration No. ADS Simulation Pressure Area 100-Series Tests Saturated steam blowdowns from top of 110 Stage 1 open 2500 psig N/Am supply tank; orifices installed; cold 120 Stages 1 & 2 open 1600 psig N/A quench tank temperatures 130 Stages 1 & 3 open 1200 psig N/A 140 Stages 1,2, & 3 open 1600 psig N/A 200-Series Tests Saturated water blowdowns from bottom 210 Stage 1 open 2235 psig 1.4 in.2 of supply tank; orifices installed; cold 1 211 Stage 1 open 2235 psig 2.1in.2 quench tank temperatures 212 Stage 1 open 2235 psig 3.5 in.2 220 Stages 1 & 2 open 1200 psig 3.5in.2 221 Stages 1 & 2 open 2235 psig 3.5 in. 2 l 230 Stages 1 & 3 open 1200 psig 3.5 in.2 231 Stages 1 & 3 open 2235 psig 3.5in.2 240 Stages 1,2, & 3 open 1200 psig 3.5 in.2 241 Stages 1,2, & 3 open 500 psig 3.5 in.2 242 Stages I,2, & 3 open 500 psig 7 in.2 250 Stage 2 open 1200 psig 7 in.2 (inadvertent opening) 300-Series Cold Quench Tank Tests Saturated water blowdowns from bottom 310 Stages 1,2, & 3 open 2235 psig 7.0 in.2 of supply tank; no orifices installed cold 311 Stages 1,2, & 3 open 1200 psig 3.5 in.2 quench tank temperatures 312 Stages 1,2, & 3 open 500 psig 14.0 in.2 330 Stages 1 & 2 open 1800 psig 7.0in.2 331 Stages 1 & 2 open 1200 psig 21 in.2 340 Stage 2 open 2235 psig 35 in.2 (inadvertent opening) Note: (1) N/A refers to not airplicable. u:\\ apt 0A1776w.non:lt,482195 1.$ i

TABLE 1.21 (Cont.) ADS PHASE B1 TEST MATRIX I l Control Test Supply Valve M atrix Tank Flow 1 Facility Configuration No. ADS Simulation Pressure Area 300-Series Hot Quench Tank Tests Saturated water blowdowns from bottom 320 Stages 1,2, & 3 open 2235 psig 7in.2 of supply tank; no orifices installed; 321 Stages 1,2, & 3 open 1200 psig 8.4in.2 quench tank water temperature 212 'F (100 "C) 322 Stages 1,2, & 3 open 500 psig 14 in.2 350 Stages 1 & 2 open 1800 psig 14 in.2 l 351 Stages 1 & 2 open 1200 psig 21 in.2 i i l I I i 4 uAage1776w.non:Ib-042195 16 ~

M f d s e N s . o. g s O N s k s's 5 1 I s e iie = ca .o aO E9 l 6 8 d i i l I .I I I I o 88888888 e f w a n u u r s; I (oes/wql) eles sold ssen eJnpqW Figure 1.2-1 ADS Phase B1 Test Specification Plant Performance / rest Prediction Map for ADS Stage 1 Open n:W1776w. mon:ltr042195 1-7

n r f a 36-s i q s_ o s 3 ] e s cs E s s' _ s o s E-E illt t 8 s o c o

o 9

O l R s aa-N m a.e o =" w H 2 o a E I I I I l l I I I I I I I o g g "8 g g g 8 g g 8 g 8 8 N N " g (oesAuq0 eles mold esen eJnpqn Figure 1.2-2 ADS Phase B1 Test Specification Plant Performance / Test Prediction Map for 1 ADS Stages 1,2, and 3 Open n:W776w.non:Ib-042195 1-8

n E o gw s-s g s m 1 o 5 = e s i 5 I l =g o8 o c N n. a a m o N 6 H m g a gI e o 2e i I I I I I I I I I I I I o 8 8 888 s e a - JJJJ ls (oes/tuq0 e;eg mou esen eJnixlW Figure 1.2-3 ADS Phase B1 Test Specification Plant PerformanceHest Prediction Map for ADS Stages 1 and 2, or Stages 1 and 3 Open u:wp6(MA1776w.non:ltMM2195 19

l 1 1 )m t m 0 uN 1 N m. m_. 9 N 0 m k T* g e R 8 g O ne 0 e r ~ ep m_ O t 7 r e l P 0 0 0 liPA 6 y t 0 i lauQ 5 0 4 0 3 0 2 0 1 o 0 M p t O 0 0 0 0 g3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 3, 2, 1, 0, 9 8 7 6 5 ue 1 1 1 1 se is e6*wte i* gE.g2 8$.2 i i 2E2 I >cv 5$ t~ a ;; 2 2 9 g = 3=*. # 0 i l! ba m,EB.g KE e, l? 1 1 e >ew mG% N {= C

ia!E5-7g

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2.0 TEST FACILITY DESCRIPTION Be ADS Phase B1 test facility was a modification of the VAPORE facility utilized in the ADS Phase A tests. The facility consisted of a steam / water supply tank, valves and piping, the ADS valve / piping package, a full-scale sparger, a large quench tank, facility instrumentation, data acquisition system, and facility controls. Each test run was performed by heating the steam / water supply tank water to a specified temperature (and pressure), opening the supply line valves to the ADS package, thus allowing the supply tank to blowdown through the ADS package to the sparger. A detailed description of the facility and its various components is documented in Reference 4. A summary of the key portions of the facility are described in the following sections. 2.1 Major Components Figure 2.1-1 is a simplified flow diagram of the VAPORE facility, as modified for the Phase B ADS tests. De major components of the facility, which include the steam / water supply tank (pressurizer), moisture separator, ADS valve / piping package, quench tank, sparger, and piping and valves, are described in the following paragraphs. 2.1.1 Steam / Water Supply Tank The 1412.6-ft.'(40-m') steam / water supply tank or pressurizer was the source of pressurized, heated water and steam for the blowdown tests. The supply tank was a vertically oriented cylinder with hemispherical ends, made from low alloy steel with stainless steel cladding on all internal surfaces in contact with water or steam. He tank was equipped with electrical heaters to heat the water in the tank to the specified initial test temperatures and pressures. 2.1.2 Piping and Valves here were two separate test facility configurations used in the ADS Phase Bl test program (Figure 2.1-1): one for steam blowdowns and one for saturated water blowdowns. 2.1.2.1 Steam Blowdown Configuration Steam was supplied from the top of the steam / water supply tank in the facility configuration for the saturated steam matrix tests. Steam Supply Line he steam supply line (Figure 2.1-2) ran from the top of the steam / water supply tank through an isolation valve (VI-1.1) and a control valve (VR-1.1) to the moisture separator. VI-1.1 was a hydraulically operated wedge-type gate valve with a closing time ofless than 0.5 seconds and an opening time of approximately 30 seconds. VR-1.1 was an electro-pneumatic-operated angle globe valve. He steam line was insulated and was 10 in. (0.25 m) in diameter up to VR-1.1 and 12-in. thereafter. uAap6(XA1776w-1.non:lt>O42195 2-1

Moisture Separator : i The moisture separator was a spherical tank containing a mist eliminator, which consisted of packed - stainless steel lamellar sheets in a chevron arrangement. ~ Re separator removed water carried over i - from the supply tank from the steam and was specified to achieve an exit steam quality of 295 percent. De tank was insulated and had a volume of 173 ft.8 (4.9 m'). [ I ^ Steam Flow Meter A' venturi flow meter with a 7.72-in. (196-mm) throat diameter was located at the outlet of tim - separator in an insulated 12-in. pipe. De venturi was designed and installed in accordance with -ASME standards for venturis. 1 Steam Collector i De steam collector was located immediately downstream of the flow meter and was composed of a j ' header and a manifold. De header was a 16-in. diameter pipe,25.07-ft. (7.6-m) long with three 8-in. tee connections to the rest of the system. De three tee connections were commoned into the 12-in. 7 diameter flanged connecting manifold. De steam collector assembly was insulated. De steam l - collector was connected to the ADS package 14-in. inlet line by installation of an interchangeable spool piece between the 12-in. steam collector flange and the ADS inlet piping (Figure 2.1-2). De 1 steam / water supply line was blanked off with a blind flange. 2.1.2.2 Steam / Water Blowdown Configuration Saturated water from the bottom of the steam / water supply tank was used to provide a two-phase steam / water mixture to the ADS package. Saturated Water Supply Line A 12-in diameter insulated line ran from the bottom of the supply tank through two gate valves i (VLI-1 and VLI-2) to a 12-in. flanged connection. De two-phase fluid blowdown configuration was provided by installation of the interchangeable spwl piece between the 12-in. steam / water line flange 'l and ADS package inlet piping (see Figure 2.1-3). The steam supply line was blanked off usmg a i blind flange. 'i Water Flow Control Valves I VLI-l was an Edward gate valve that isolated the supply tank and initiated the two-phase ADS tests. VLI-2 was an Atwood and Morrill gate valve that regulated saturated water blowdown flows. De t valves were fitted with fast-operating motor actuators that required approximately 30 seconds to stroke fmm the full closed to full open position or vice versa. n:W,1776w 1.non:11A2195 2-2 --P t" = Wit + eye +-7 '<"m- + 7 4 ? PI'

VLI-2 was set to a specified flow area prior to each saturated water blowdown test to achieve the desired mass flow rate and steam quality conditions at the ADS package inlet. Each blowdown was initiated :y a command to open VLI-1, and the blowdown was terminated by closing VLI-2. 2.1.3 ADS Package The ADS package consisted ofinlet and discharge piping, the ADS piping / valve package, and orifices (Figure 2.1-1). Tne piping specifications are shown in Table 2.1-1. ADS Valve Package Inlet Piping The ADS valve inlet piping ran from the 12-in. flanged connections for the interchangeable spool piece into a 14-in. diameter line before entering into the ADS valve package. De inlet piping incorporated a prototypic loop seal whose function was to keep the ADS valves cool. The inlet piping was insulated up to the end of the loop seal. ADS Valve Package ne layout of the VAPORE ADS valve package was similar to the AP600 ADS package and includes: a 4-in. diameter flow path containing one 4-in. globe valve (VAD-1) simulating ADS stage 1; and two 8-in. diameter flow paths, each containing one 8-in. gate valve (VAD-2 and VAD-3, respectively) simulating ADS stages 2 and 3. A spool piece was fitted in each flow path in the position of the second valve, which was not installed for the Phase B1 tests. A sharp-edged orifice was fitted into each spool piece to simulate the resistance of the missing valve for some of the B1 tests. De missing valves are known as VAD-4, VAD-5, and VAD-6. De orifices are shown in Figures 2.1-4 and 2.1-5. The ADS stages were connected to the inlet and discharge piping with reducers and tees. The valve package was uninsulated. ADS Valve Package Discharge Piping The ADS valve package connected into a 16-in. diameter discharge collector. The collector had two 10-in. diameter line connections, each containing a bellows section followed by a 90-degree elbow that were used to connect the discharge line to the 16-in. diameter quench tank inlet line header. The quench tank inlet line ran approximately 100 ft., sloping downwards to the spargu illet above the quench tank. Two vacuum breaker valves were provided in the 16-in. line to the quench tank to prevent quench tank water from being drawn up when the flow stopped. All of tic ADS valve package and discharge piping was uninsulated. ovm1776w 1.non:lt>o 2195 2-3

=, t 2.1 A Sparger and Quench Tank r .'Ihe functions of the sparger, its pedestal, and quench tank were to: Condense the steam Endure the dynamic loads [ Minimize pressure wave reflections Collect the water exhausting from the test facilities ' The sparger consisted of a vertical 24-in. diameter stainless steel pipe with four 8-in.' diameter radial anns. each perforated with 3501/2-in. diameter holes on the upper quarters. 'Ihe arms were connected j to the sparger body at a downward slant of 30 degrees from the horizontal position. 'Ihe design was : 1 prototypic of the AP600 plant sparger and was mounted on a pedestal in the center of the quench tank so that the sparger arm connections were 9.5 ft. (2.9 m) below the surfacs of the water. The 25.1-ft. (7.6-m) diameter cylindrical quench tank was filled to a nominal depth of about 24 ft.- (6.8 m), containing approximately 11,900 ft.' of water. The quench tank was constructed of concrete. I with a porous surface to minimize pressure wave reflections. A water heating system was used to heat - the water temperature to saturated conditions (212*F). TABLE 2.1 1 ADS PACKAGE PIPING SPECIFICATIONS ' l Valve . Valve Valve Inlet Piping Valve Outlet Piping pg j p Inlet Discharge Piping Stage 1 Stage 2 Stage 3 Stage 1 Stage 2 Stage 3 Piping Pipe Size On.) 14 4 8 8 '4 8 8 16 ) .1 i Pipe Schedule 160 160 160 160 80 80 80 80 Design Temp. 680 680. 680 680 600~ 600 .600; 485") (*F) Design 2485 2485 2485 2485 1500 -1500 .1500 580")- j Pmssure (psig) Notes: l

Discharge piping pressure and temperature rating is based on expansion bellows rated for 580 psig (40 bar).

I I I u:W.1776w 1.non:1h042595 2-4 l

]u ADS Loop e 8" ul; h IAs / I # {} Spool pieces for future installation of valves am , f (orifices also fitted in N ( , s some tests) u </ New oM P ITs Discharge 14" Q L J Ly Collector Saturated --T- $ 5" Steam 8" Inter &angable .'!'? Spool {J gJ g.J the Extsting r

w a i Revision of Pece 10, 10 Discharge Line \\ 12 Collector M m T/

Waleti i

hh l f8"f8" 8' s c : 3 m ;..... ( ( 3" New 12" Saturated Water Line Water to \\ \\ i SM p/SM gg,* h 7-New / A g l ADS Loop N VLl7 VLt g h %%%%\\ 61689B 12 Figure 2.1-1 VAPORE Plant Arrangement for Phase B1 Testing u:\\apl776w 1.noo:Ib-042595 2-5

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R n E t1 LOVA M a-i k m; 3 it 11 4 j 17 N. --c : CAD .. D AD h E1 yI I w g I h I I lin N- +il _:!3 ff h Figure 2.12 VAPORE Facility Configuration for Steam Blowdown Tests u Aap60(A1776w-1.non:1b-042595 26

I r----------------- 1 l ADSVuNe/ Piping g l Package M 8* L 2 l ~ l w l hI I U I / ~poolPieces l S a= t- = ~ / ~ ,u I l 1 i l % i l ~ w 1 a-L I, w sg g ,,,,,,n,ng,,,, i C p

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___________________i M' t _ _. _ _ _ _ _ _ I jia i vs-1.1 l 12' steam . ~~"~" " " " i: jA l. ta-t t Wa l w. I GD ~ \\ El i, s-- i (N 3-14-vn.i,3 1L------------ 1r ve,u H J j l i

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/ Figure 2.1-3 VAPORE Facility Configuration for Water Blowdown Tests u:\\agWXA!776w-1.non:lko42595 2-7

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R=0.118" .l I I I 5 g._f .i __.4 .p..___}_._._ 77( T I e 4 N l b m i l \\ l NOTE: Bar attached to orifice plate is located at top of pipe when orifice is installed. Figure 2.14 Orifice Simulating 4-in. Gate Valve (Stage 1) u:W1776w-1.wpf:lb-080795 28

f j t i t. 1 r T i 6.496" I != l Y///// alm i MlV////F t 1 g l aa i ~' o> a) oa CD (U EE I v v i c) o i i N co i 99 i r oo ,1 l i. a .I l r 0 0.2" .(}. _. _.. g.._.. _. _.(3 j l ir .I I i e< R ,l b m i t 5 NOTE: Bar attached to orifice plate is located at top of pipe when orifice is installed. Figure 2.15 Orifices Simulating 8.in. Globe Valves (Stages 2 and 3) ump 60(A1776w.l.wpf;1b G40995 29

2.2 Instrumentation The Phase B1 test facility instrumentation was developed in collaboration between ENEA, ANSALDO, and Westinghouse. A combination of sensors was used to monitor temperatures, pressures, differential pressures, and levels at various locations in the piping system, sparger, and quench tank. Valve instrumentation monitored several parameters for VLI 1 and VLI-2 gate valves, namely: stem torque and thrust during open/close strokes, motor power, spring pack displacements, and open/close limit switch actuation. Other valve-related measurements made during the test runs included upstream and downstream pressures, and valve bonnet and body pressure. Strain gages were mounted on the sparger arms and pedestal and on the ADS valve / piping ring to monitor stmetural responses during test runs. Three accelerometers were mounted on the 90-degree piping elbow to monitor responses to the transients. A complete instrumentation list is provided in Table 2.2-1, where the 16-in. discharge line turns downward into the quench tank. Figures 2.2-1 through 2.2-5 illustrate the locations of the sensors. l l 1 i i l I udap6(XA1776w 1.wpf:th040995 2-10 )

u.- o TABLE 2 21 LIST OF INSTRUMENTS Manufacturer's i Location Type of Specified Transducer I.D. Transducer Make/Model Range Accuracy Quench Tank I l TE-01 to TE-30 Thennocouple Euromisure K01 32 - 572'F 14*F (Type K) (0 - 300 C) (1 2*C) .j 2 XE-1 to XE-12 Strain Gage Eaton Ailtech N/A N/A (120 ohms) SG-125-01 Piping Pressure 'I PE2W - PE8W. Pressure Transinstruments 0 - 3625 psig 0.81% of full PEIIW, PE13W - (Piezoresistive) BHL4251 (0 - 250 bar(g)) scale PEISW, & PE17W - PE24W 17T6W PE9W, PE12W, & Pressure Transinstruments 0 - 2320 psig 10.81% of full PE16W (Piezoresistive) BHL-4251' (0 - 160 bar(g)) scale PT61B Pressure Transinstruments 0 - 1450 psig 0 133% of full (Piezoresistive) BHL-4206 (0 - 100 bar(g)) scale OlMO DNP-01 Delta-P VL1-2 N/A N/A N/A ADS Loop Piping Strains i XE-13 to XE-36 Strain Gage KYOWA N/A N/A (120 ohms) SKW-10057 Sparger Pressures PE-01 Pressure Transinstruments 0 - 870 psig 0 136% of full (Piezoresistive) BHL-4225 (0 - 60 bar(g)) scale 40MO PE-02 Pressure Transinstruments 0 - 362.5 psig 036% of full (Piezoresistive) BHL-4225 (0 - 25 bar(g)) scale 40MO PE-03 to PE-07 Pressure Transinsuuments 0 - 232 psig 036% of full (Piezoresistive) BHL.4225 (0 - 16 bartg)) scale 40MO PE-08 Pressure Transinstruments 0 - 232 psig 1 2% of full 0 (Piezoresistive) PROMAN (0 - 16 bar(g)) scale C252230/2a Quench Tank Pressures PE-09 to PE-20 Pressure Transinstruments 0 - 36 psia 10.42% of full (Piezoresistive) BHL-4240 (0 - 2.5 bar(a)) scale l 40MO f l l u%p600\\1776w-1 wpf:lt>041395 2-11

O TABLE 2 21 (Cont.) LIST OF INSTRUMENTS Manufacturer's Location Type of Specified Transducer I.D. Transducer Make/Model Range Accuracy Discharge Piping Before Sparger Pressure Transinstruments 0 - 870 psig 036% of full PE-21 (Piezoresisdve) BHL4225 (0-60 bar(g)) scale Pressure Hartmann-B 0 - 36 psia 1 2% of full 0 PE-22 (Piezoresistive) ARK-210 (0 - 2.5 bar(a)) scale St tam Supply Piping After Moisture Separator PT61A Pressure Transinstnnnents 0 - 2320 psig 1033% of full (Piezoresisdve) BHL-4206-00-01MO (0 - 160 bar(g)) scale l'T-18 Pressure Transinstruments 0 - 870 psig 0 133% of full (Piezoresisdve) BHL4206-00 (0 - 60 bar(g)) scale PT-10 Pressure Transinstruments 0 - 2320 psig 033% of full (Piezoresistive) BHL4206-00 (0 - 160 bar(g)) scale FT-15 Venturi Hydronics TH-DVA 0 - 507 psid N/A (0 - 35 bar(d)) Steam / Water Supply Tank FT-(M Pressure Rosemount 0 - 2900 psig 10.5% of full (Piezoresisdve) I144-G6000-A22 (0 - 200 bar(g)) scale LT-1 Delta-P Bellows Rosemount 0 - 32.8 ft N/A Type 151INPE22B1 (0 - 10 mH O) (level) 2 LT-1B Delta-P Bellows Rosemount 0 - 79380 lb N/A Type 1511NPE22B1 (0 - 36000 kg) (mass) Discharge Piping FTlW. PT6W, Pressure Transinstruments 0 - 3625 psig 10.81% of full & PTIOW (Piezoresistive) 4600-BGC-2500-(0 - 250 bar(g)) scale COUE FT4W Pressure Transinstruments 0 - 2320 psig 0 133% of full (Piezoresistive) BHL4207-00 (0 - 160 bar(g)) scale YE-01 to YE-03 Acceleration Endevco 7703A-100 100 g N/A (Piezoelectric) TElW to Thermocouple Euromisure K01 32 - 572'F TE16W (Type K) (0 - 300*C) _,,+4*F ( 2.2 C) I u:\\ap6(Xhl776w-Impf:1b 041395 2-12

,,. ~ l TABLE 2.21 (Cont.) LIST OF INSTRUMENTS Manufacturer's t ~ Location Type of Specified i TransducerI.D. Transducer Make/Model Range Accuracy l Surge Line Displacement t ZT-6 to ZT-7 Displacement Monitran e 0.4 in N/A (LVDT) MTN/EGR010 fe 10 mm) MOVATS Transducers N/A Torquemirust ITI MOVATS Type 0 - 200000 lbs thrust 2% of reading Cell (Strain RF 0 - 6000 ft.-lbs. torque 0.5% of full t Gage Type) scale N/A-Current Probe Fluke Y8100 0 - 200 amps ac 6% of full l (Clamp-On) scale i Valve stem ' Displacement Pulsonic 2000~ 0 - 10 in. 2.5% of. travel Probe reading l i f I b i 1 l 1 ,l i i i u:W,1776w.l.wpf:lh040795 2 13 i

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q; p __ _.__~~_.__m._,, '~-~_': 'r1 2 ::l w, _ _., = EE-- =g. - g y .-. r-. 3.. .y A ti o p. 4 WI 3-. ~ - '. i.E== f' -- Cr -- n : C. a. g,.. p1 : g = l g;; og 3-.. = g -- idii i O~ 6-d.- -:.@-- aj ,._ g.. _g.__ L ,i : .==.=_=_ =.._....=_: : :: -- - o ANSTEC . _.. = = - - - - - - - - APERTURE c) r .e,.T VI "9f99....Y p g) CARD y W j "" y : g A otwg;;3w, u H ,) ytg Porture Card k ~ l w n, -- c3-P. (h)@ 9N ....... 1 v -,c..o 1-, i w i .I., 1 d-AMSAI.Do SCOPc Cf SU,PL, ) c l!4 j '.f lJ'..'-l-d: pec cssi.mo vaeo.nc etant ce ) S' 3 i;. oorur s g o c r c sc4 scorc or su,m,tv g} w..c = l [

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2: =., l O c -+.o_-a m, 756 Sto o/O W \\ 1 su.zas os.s I Figare 2.21 ADS Phase B1 Test Specification VAPORE Facility Process Piping & Instrumentation =_ 2-15 i E

r - %C. : I:. l. i i I i i 1 .y i I l L i 51776.14 ). r l l Figure 2.2 2 Location of Sensors on Discharge Piping and in Quench Tank - Elevation View . n:\\ap600\\l776w 1.mpf:1b-040795 2.} 7

'.~ 180* I i l .135' l \\ Rack *E" 4 \\ i' i \\. f j Arm *B* rs i Rack"F" ,8 i Rack *A" ^" l[M Rack "G" \\ dj[h 90* -- -U - - - -- *- *H H4-&*+------------ - 270* 'W? ys es 9 L4D ] L.- Rack "D. Arm "A*- f H p / 1 Rack *C"--*JK Rad "B" Arm "D" / 1 / 1 / / j i i i Pressure Transoucer Thermmx@e stram Gage Figure 2.2-3 Location of Sensors in Quench Tank and on Sparger Arms Plan View a:upuxx1776.-1.wpt:1b-a 0795 2-18

... ~ f I 6 I.& i l I TE i i 1 i l re i j s,\\! (P A i Arm "A" j f.s Arm "C" i ., + xe s. ./f x,E Y i /* l g @@ g-i Arm "D" c,e)@ l I i l l xe V. Pressure Transducer i Thermocouple Strain Gage l l i .l e Figure 2.2-4 Location ofInstrumentation on Sparger i [ -ump 6r(A1776w 1.wpf:1b 040795 2.I9 i,

SECTION B O- [( O} ill i f 44 m f 3 j i> 9 l o (-- h \\ / N__ O O I y} ~ -p; j ) j TO QUENCH i TANK O V >1 SECTION A SECTION C b' ' I i d { $1506A05 FROM PRESSURIZER (SUPPLY TANK) I l -t i 1 i Figure 2.2-5 Location of Strain Gauges on ADS Piping Loop (Sheet I of 2) l I osp6aou7w-i.wpt:it>. mom 2-20 e f

s + k 'e. t i i l i .[ i (, t s8 d: ) e8 s, SECTION C i Y r, ~ 13 i j: i s J x' ~7 l e u f g v i,j @'s ij i Xn 14 ) I i SECTION A SECTION B sisos a Figure 2.2-5 Location of Strain Gauges on ADS Piping Loop (Sheet 2 of 2) u:up600\\l776w 1.wpf:Ib-040795 22}

2.3 Data Acquisition Systems Three data acquisition systems (DAS) were used for the Phase B1 tests. Figure 2.3-1 shows a schematic overview of the DASs. A trigger signal from the main control room was used to start these three systems simultaneously prior to the start of the transient. A description of the three DASs is as follows: The IBM system recorded the sparger and quench tank temperatures during the tests. This DAS consisted of a 30-channel,12-bit analog-to-digital converter and an IBM-XT PC that recorded the data at a rate of 4 samples per second (sps). The MOVATS system recorded the characteristics of the valve performance. This DAS was a standard,12-channel 3500 series signal conditioning, unit and Dolch 486/33 MHz PC supplied by ITI MOVATS. The system recorded valve torque / thrust, position, coil current, limit switch state (open/close), motor power and current, and upstream / downstream pressures at a rate of 1000 sps. The Prosig system recorded data from the pressurizer, downstream piping, sparger and quench tank, as well as VLI-2 valve position. Some of these signals were conditioned prior to the Prosig DAS. The Prosig DAS provided 136-channel high-speed digital data acquisition and included signal conditioners, filters, amplifiers,14-bit analog-to-digital converters housed in several units, and a Viglen 486/33 MHz PC. The data 3 were recorded at a rate of 1000 sps. Prior to start of the Phase B1 tests, these systems were setup and a functional / validation checkout was performed. The data acquisition hardware was found to be within the manufacturer's specifications. 1 I unspedA1776w-l.wpf:lt>040795 2-22 j

e Control PC Plant Control Outputs y Hewlett-Packard j g Vectra VL24/25C (486SX) 1 Plant Status inputs [ h I Start Data Acquisition S Trigger Signal 3 E IBM-XT DAS 2 (30 Channels - N [=! Quench Tank Temperatures) )I instrument inputs 9 5 f ITT MOVATS 3500 DAS a For Valve Monitoring N l p (12 Channels - Valve A) )I instrument inputs s .E ITT MOVATS 3500 DAS l For Valve Monitoring N g (12 Channels - Valve B) )I instrument inputs W 9 o ,0 PROSIG Conquest DAS s (136 Channels - Pressurizer, 3 Piping and Sparger) I instrument inputs l 51770A.1

d 2.4 Control and Safety Systems A programmable logic control system running on a Hewlett Packard PC was used for plant control. The system controlled the supply tank pressure / temperature (by switching the heaters on and off) prior to test initiation and controlled the operation of valves and DASs during the tests. The steam blowdown test sequence was manually controlled. The automatic control sequence for the saturated water blowdown tests is shown in Figure 2.4-1. The supply tank level was monitored and manually controlled so that the level was typically 5 60 percent prior to steam blowdowns and s 80 percent prior to saturated water blowdowns. The safety system for the supply tank and piping included two spring-loaded safety valves located on top of the supply tank. These valves were set to open at a pressure of 2785 psig. In addition, power to the heater rods was automatically cut off on high pressure or low tank water level, and high pressure and low level alarms were provided to the operator. l u.W1776w l.wpf:Ib-04079s 2 24

s 5I 1.. F m Start IBM 2 5' b r 1 mp Start MOVATS DAS 9 Triggersi E Start PROSIG E. Open Close .c! VLII 4 ] t.a 2 Control 11 ll o 1s. Close 1s. VLl2 l ] c Control E II s 1 s. a 15 s. > 4 30 s. % f Test Duration 4 E O [ Data Start 'U* ~ g Data End N sin 0A.4

2.5 Facility Operation and Quality Assurance l Written procedures and checklists were used to control test performance

Prior to each test, the i

facility conditions were checked and recorded. Test instrumentation was reviewed for operational status. Failed sensors or channels were identified and evaluated prior to operation of each test. The steps performed during each test were logged. Outputs from the DASs were checked and recorded 1 - before and after each test. t l The data were transferred from the DASs to an optical disc and were transmitted to the Westinghouse Energy Center after each test. A day-of-test report was prepared for each test and transmitted along l with the test data, outlining the test parameters and results and making a preliminary assessment of test l acceptability. Maintenance activites and failed sensors or channels are also noted in the day-of-test report. [ Maintenance of the plant was performed on an as-needed basis. Faulty instruments and equipment I I were replaced when the routine checks indicated they had failed. The instrument replacements and other maintenance performed are documented and summarized in Table 2.5-1. I t The tests were conducted in accordance with the applicable requirements of ASME NQA-1,1986, as i defined in Reference 1, and the ENEA QA Plan.* l r I i -l i r ? uwths.wpf:!b041195 2-26 I i F

t TABLE 2.5-1 INSTRUMENT MODIFICATIONS FOR PHASE B1 TESTS Test Test Date Modification / Maintenance A001312 7/26/94 All pressure instruments were recalibrated through the DAS. I A002311 7/26B4 Circuits for the strain gauges in the pool were repatred Trigger signal for the MOVATS DAS was checked, repaired, and verified again. The trigger for the PROSIG DAS was also verified again. l A003331 7/27B4 Strain gauges were all checked and verified. A004330 7/27B4 Functioning strain gauges (i.e. XE14, XE15, XE16, XE17, XE18, XE31, XE32, XE34, XE35, XE36) were rehninneed A005310 7/2864 LTIB was replaced, recalibrated, and verified. A006340 7/29/94 PEI1 wiring was repaired. A007PFI 9/2/94 DNP-1 (Channel 119) installed across VL1-2. YEl, YE2 and YE3 repaired (Channels 85, 86, and 87, respectively). TE5W repaired. TE12W replaced. PE3 recalibrated. Quench tank cleaned and drained, instrumentation in tank verified and repaired as necessary. A025210 9/16/94 LVDTs (Channels 99 and 100, Prosig) were repaired. PE08 (channel 56) was replaced and recalibrated). Strain gages were rebalanced. l DNP-1 (channel 119) was disconnected. IrT18 (channel 73) not working. ADS orifices installed. A026211 9/16/94 Root valve from PE12W leaking. A027212 9/1964 Steady 15.1 my signal sent to Channel 21 Prosig. i A028221 9/20/94 Root valve PE12W repaired. A029231 9/21B4 XE 9, Channel 109 balanced. Working strain gages balanced hot. A037210 9/28S4 PE5W, Channel 3 PROSIG DAS was replaced and recalibrated. A038130 10/10/94 AP (FTISB, Prosig Channel 118) on venturi calibrated. I I'T61 A (Prosig Channel 71) calibrated. PTIO (Prosig Channel 75) calibrated. TE12W replaced. A039140 10/10/94 TE15W (Prosig channel 135) was replaced. l I u:\\ap60tA177ew-2.non:lt> 042195 2-27

i i r TABLE 2.5-1 (Cont.) INSTRUMENT MODIFICATIONS FOR PHASE B1 TESTS Test Test Date Modirwation A M2312 11/3/94 PE3 was replaced and recalibrated. The VLI-2 position sensor in the PROSIG DAS (channel 95) was (re-run) recalibrated. Channel 22 (PROSIG) is now the backup LTIB voltage signal. Channel 23 (PROSIG) is now the backup LTI voltage signal. A043331 11/3/94 (re-run) A M4310 11/3/94 Voltage lead for the VLI-2 operator motor was reinstalled. (re-run) A046340 11/8/94 TESW was replaced. (re-run) u:WM1776w-2.noo:1b-N2195 2-28

3.0 DATA REDUCTION AND ANALYSIS This section presents a summary of the data reduction and analysis performed on the data recorded during the Phase Bl testing. Detailed discussions of the data reduction and analysis are presented in Appendices A and B. The effects of facility modifications and maintenance shown in Table 2.5-1 were incorporated in the review of the test data, and the test facility data was corrected to reflect the sensor calibrations as necessary. 3.1 Data llandling Data from the three DASs described in Section 2.3 were handled differently according to the sampling frequenc! and the form of the data. The MOVATS data were used to monitor the performance and mecW. cal operating characteristics of valves VLI-1 and VLI-2 to detect any degradation in performance during the test program and to indicate if preventive maintenance or repairs were required; the MOVATS data is not reponed herein. Electronic data in ASCII format for the IBM and Prosig data are presented in Appendix F at a frequency of 4 sps. Outputs from sensors that were determined to be non-functional (see Appendix D) were replaced with zero values in the final data files. l 3.1.1 IBM Data The IBM data consisted of 30 temperature channels recorded directly in *C in 30 individual ASCII files for each test at a frequency of 4 sps. 'Ihe data were combined into a single spreadsheet and converted into *F. ASCII files for Appendix F were prepared from print files of data on Lotus spreadsheets. 3.1.2 Prosig Data The Prosig DAS acquired and converted the data into engineering units. The data were recorded in raw voltages and in engineering units, as prescribed by a channel calibration file specific for each test run. The Prosig data were handled in two distinct manners: Iligh-frequency (1000 sps) data for channels 57 through 68 (quench tank pressure pulses, PE9-PE20) were analyzed to determine the power spectral density (PSD), since the frequency of the pressure variation is important. PSD plots were produced using the Fast Fourier Transform 2 capability in the Prosig software and are expressed in units of bar /Hz. High-frequency data are also provided for the three operating accelerometers (channels 85 through 87, YE1 through YE3). High-frequency data are provided as separate files for each sensor for each test in Appendix F and expressed in units of bar and g's, respectively. f All the Prosig data in engineering units were processed to a 4 sps rate to reduce the volume of data by a technique described in Appendix A. 'Ihe resulting data were imported into a Lotus spreadsheet where the data were converted into english units (psi, 'F, etc.) and calibration u%pm1776w.2.a<m:1b-042195 3-1

.- _ = _. - t corrections were applied. Table 3.1.1 identifies the final correlations used in reduction of the test data. In addition, the functioning strain gages and quench tank pressure values were zerced at pre-test levels. [ t Ble mass flow rates for the saturated water tests were calculated from the Prosig data by evaluating the rate of change of the mass inventory in the steam / water supply tank, as described in Appendix A. The Lotus spreadsheets were used to calculate other variables of interest, which included steam quality [ and steam flow rate (see subsection 3.3.2). ) l L I e i i l b l i I uAmp60tA1776w-2.non:1b-042195 3-2

i TABLE 3.1 1 DATA REDUCTION COEFFICIENTS Standard Deviation of Coefficient Calibration Effective Channel Descripten Eu/ volt. Constant Units Data Intenal 1 PE2W 8303 -3.338 bar(g) 0.053 2 PE3W 8368 2.343 bar(g) 0.084 3 PESW 8194.9 -2.68 bar(g) 1.5 Tests A001 thru A0'.6 3 PE5W 8377.6 -0.716 bar(g) 0.65 Tests A037 thru A051 4 PE7W 8321 -1.989 bar(g) 0.108 5 PE8W 8410 -0.63 bar(g) 0.168 6 PE9W 5362 -1.383 bar(g) 0.142 7 PEllW 8399 -1.369 har(g) 0.176 8 PE12W 5356 -1.194 bartp 0.192 9 PE13W 8314 -0.781 bar(g) 0.183 10 PE14W 8361 -2.09 bar(g) 0.167 11 PE15W 8250 -3.831 bar(g) 0.467 12 PE16W 5184.3 -0.335 bar(g) 1.42 13 PE17W 8267 -3.37 bar(g) 0.116 14 PE18W 8375 -2.177 bar(g) 0.153 15 PE19W 8286 -1.936 bar(g) 0.515 16 PE20W 8366 -2.473 bar(g) 0.533 17 PE21W 8356 2.331 bar(g) 0.121 18 PE22W 8245 -1.434 bar(g) 0.231 19 PE23W 8321 -2.487 bar(g) 0.184 20 PE24W 8318 -1.917 barfg) 0.613 49 PEI 6.002 0.018 bar(g) 0.024 50 PE2 2.488 -0.029 bar(F) 0.014 i 51 PE3 1.602 -0.0006 bar(g) 0.276 Tests A001 thru AMI 51 PE3 1.64 -0.309 bar(g) 0.276 Tests AM2 thru A051 52 PE4 1.689 4 683 bar(g) 0.499 54 PE6 1.599 0.006 bar(g) 0.029 55 PE7 1.6 0 bar(g) 0.006 56 PE8 1.6 0 bar(g) Tests A001 thru A024 56 PE8 1.602 -0.005 bar(g) 0.006 Tests A025 thru A051 7 PE9 0.25 -0.004 bar(a) 0.002 58 PE10 0.25 0 bar(a) unap600\\l776w-2.non:lt>.042195 3-3

) l TABLE 3.11 (Cont.) DATA REDUCTION COEFFICIFXfS Standard Deviation of ) Calibration Effective Channel Description Coefficient Constant Units Data Intenal 60 PE12 0.25 -0.002 bar(a) 0.002 61 PE13 0.25 -0.001 barra) 0.001 62 PE14 0.25 -0.001 bar(a) 0.001 63 PE15 0.25 -0.003 bar(a) 0.003 64 PE16 0.25 -0.001 barfa) 0.002 65 PE17 0.25 -0.002 bar(a) 0.001 66 PE18 0.25 -0.002 bar(a) 0.002 67 PE19 0.25 -0.007 bar(a) 0.012 68 PE20 0.25 -0.007 bar(a) 0.012 69 PE21 6 0 bar(g) j 70 PE22 0.25 0 barfa) I 71 PT61A 40.434 -40322 bar(g) 032 Tests A038 thru A041 only 72 M61B 24.974 -25.172 bar(g) 0302 A001 72 PT61B 24.974 -25.172 bar(g) 0302 A002 72 l'T61B 24.974 -25.172 bar(g) 0302 Tests A003 thru A051 73 I"T18 -15 15 bar(g) Failed 74 PT4 50.201 -51.757 bar(g) 0.159 75 PTIO 40 -40 bar(g) 0 Tests A038 thru A041 only 81 I'T1W $0.201 -51.255 bar(g) 0 159 82 PT4W 40.225 -40.345 bar(g) 0.16 83 PT6W 49.898 50.744 bar(g) 0.55 84 PTIOW 49.999 -50.747 bar(g) 0354 j 95 ZT2 2 -2.66 inches Tests A001 thru A010 95 ZT2 (in) 2 -2.66 inches Tests A011 thru A041 r 95 ZT2 (47) 2 -2.66 inches Tests A042 thru A051 116 PE5 1.602 -0.027 bar(g) 0.008 117 PEll 0.25 -0.001 bar(a) 0.001 118 FTIS 8.6664 -8.66244 barfa) 0.024 Tests A038 thru ACM1 only 119 DNP-1 0.495 -0.496 bar(a) 0.011 Valve Characterization tests only i u:W1776w-2.non:Ib-042195 3-4 i

4 l - 3.2 Error Analysis I il A detailed review of the ADS instrumentation was conducted which included review of: [ Manufacture's specifications-e Calibration records _l Cabling losses Conditioning equipment accuracy DAS performance A large number of the pressure transducers were calibrated from the sensor through the DAS and, therefore, include the overall system uncertainty. The errors on the remaining transducers and thermocouples were estimated from the contribution of the above items to a total uncertainty, which is summarized in Table E-2. In general, the worst case uncertainty was estimated at 2.7 percent, and an average of 0.23 percent for all pressure transducers. A detailed estimate of the uncertainty contributions is provided in Appendix E. I i ) .3 J I j

l 1

l 1 n:hp600\\l776w-2.non:ltW2195 3-5

e 3.3 Test Evaluation 3.3.1 Test Acceptance Criteria The data from each test were assessed to determine if the tests met the test objectives. In general, tests that did not meet the minimum acceptance criteria were remn with the specific problem fixed, or the test conditions were modified to provide more appropriate test conditions. The following are the criteria that all tests were evaluated against: The primary method of mass flow rate measurement shall function during testing. The steam / water supply tank mass inventory measurement shall be the primary method for the 200-and 300-series tests. The venturi (FT15) shall be the only flow measurement device available for the 100-series tests. Redundant steam / water supply tank water mass / level measurements shall agree within 10 percent for the 200- and 300-series tests runs. Achieved mass flow and estimated fluid quality shall be in reasonable agreement with the test intent. The basis for this criterion will be the relationships ofintended and achieved conditions to predicted AP600 plant conditions (as shown by mass flow rate / quality envelopes). Critical instmments (Table 3.3-1) shall function properly. Initial pressurizer pressure shall be within 5 percent or 50 psi (whichever is greater) of the specified pressure. PROSIG and IBM DASs shall record data properly and for the entire transient. Initial quench tank temperature shall be less than or equal to 140*F for cold quench tank tests, and hot quench tank temperatures shall be 212*F 2*F. 3.3.2 Test Analysis A number of analyses were performed on the data to derive additional parameters and validate some measurements. These analyses include: verification of water blowdown test mass flow rates, calculation of steam blowdown test mass flow rates, calculation of steam quality at the ADS inlet for saturated water blowdown tests, and characterization of water flow control valve VLI-2. u%pmA1776w-2.non:Ib-042195 3-6

3.3.2.1 Flow Rate Calculations Water Flow Rate Verification During the 200- and 300-series tests, saturated water was discharged from the bottom of the steam / water supply tank. Two differential pressure cells connected to the tank monitored the mass and the level of water inside the tank during the test: LTIB directly measured the weight of water (liquid and steam) between the two pressure taps. LTl measured the water level inside the tank. Nearly saturated conditions always existed for steam and liquid water during these tests. By analyzing the weight / level changes with time, the mass flow rate leaving the steam / water supply tank was calculated. i The two measurements were compared in detail in Appendix B. Table 3.3.-2 summarizes the two mass measurements between the beginning and the end of each test and shows that the resulting difference between the two measurements was in the range of-5 to + 5 percent, which was well within the acceptance criteria. Steam Flow Rate Calculation During the 100-series tests, saturated steam was discharged from the top of the steam / water supply tank through a moisture separator prior to flowing thmugh the venturi for flow measurement. The discharge of steam from the top of the supply tank induced a strong depressurization of approximately 300 psi in the first ten seconds of the transient for matrix tests 120,130, and 140. The depressurization induced boiling, a decrease in the fluid density, an increase in the fluid level, and most likely water carryover into the steam supply lines. The 100-series tests were conducted at essentially 100 percent steam quality throughout the steam flow path from the moisture separator to the exit of the sparger. Figure 3.3-1 (test A040110) shows a typical comparison of the steam mass flow calculated from the venturi flow meter with the mass flow calculated from the supply tank inventory change. The flow indicated by the supply tank is initially higher than the flow recorded by the venturi but becomes less than the venturi flow after approximately 15 seconds. The difference between the two flows can be partially explained by the presence of the moisture separator, which removed water from the fluid stream to produce high quality steam. As the system pressure decreased during the blowdown, the moisture separator inventory may have flashed and added saturated steam to the fluid stream, thereby increasing the steam mass flow. Measurement of the steam flow from the supply tank inventory (LTl and LTIB)is therefore unreliable; the venturi (FT15) is the only flow measurement device used for the 100-series tests. The methodology used to calculate the steam flow presented in this report is provided in Appendix B. u:\\ap60tN776w-2.non:Ib-082195 3-7 l l

3.3.2.2 Steam Quality he supply tank pressures and VLI-2 valve flow area were selected to achieve the mass flow and fluid quality conditions similar to those expected for the AP600 ADS plant operating conditions. For each water blowdown test, the achieved steam quality at the ADS inlet was estimated using the following relationship: H -H Tx Quality = H ws

100

- H,3 ss where: Water enthalpy at bottom of supply tank Hrx = Saturated water enthalpy at ADS inlet (PT6W) Hws = Saturated enthalpy at ADS ist (FT6W) liss = he enthalpy at the exit at the bottom of the supply tank (HrK) was estimated from the pressure recorded by I'TlW and TElW or from the saturation pressure at PTlW, whichever was less. De enthalpy of saturated vapor (Hrx) based on the pressure at the exit of the moisture separator (FT61A) was used for the 100-series steam tests. He same method was used to estimate the fluid quality at other locations in the test facility (e.g. sparger). His quality calculation assumes adiabatic flow conditions and a homogeneous equilibrium flow through the test facility. A more rigorous treatment of the fluid quality will be presented in the detailed test analysis report (s) which will be prepared to fully evaluate these tests. He quality r calculated by this method will be much higher at the beginning of flow because TE1W does not rise to the saturation temperature of the supply tank for at least 5 seconds into the transient. As flow is reduced at the end of the transient the temperature of TE6W at the entrance to the ADS package cools of much quicker than TElW and therefore tends to produce indications of higher steam quality. At the end of the transient, only the values calculated during the established (quasi-steady state) flow periods are ofinterest for the purposes of this report. 3.3.2.3 Valve Characteristics The open area of VLI-2 was used during the steam / water blowdown tests (2.00- and 300-series matrix tests) to control the mass flow rate and the quality of the fluid entering the ADS package. The characteristics of VLI-2 were determined from 19 cold water flow tests (A007PFI through A024PF12) conducted at low pressure and cold temperature. In the tests, the pressure drop and the flow through the valve were measured at various valve open positions. The valve opening / stem position was measured in millimeters between two points on the stem and body and was also recorded by the ZI2 sensor (Channel 95). The ZT2 indication is affected by variations in the end of valve travel from test to test, so it is necessary that the valve area and friction factor be determined in terms uimpMXA1776w 2 man:lhot2195 3-8

o of the measurement between the points on stem and body. This measurement is called " opening" or stem position" in this report. The cold water tests were analyzed to determine the relation of friction factor to valve stem position. The tests, analysis method, and results are presented in Appendix B. Table 3.3-3 summarizes the test I results. I The areas reported represent the line-of-sight area between the inside diameter of the valve seat ring and the outside diameter of the valve disk. Flow was observed to start at a stem position of 161.3 mm, whereas zero line-of-sight flow area occurred at a stem position of 165.2 mm. This l difference is due to leakage past the chamfers on the gate disk and valve seating body. Since no tests were done at these small valve openings, the difference has an insignificant effect on the actual flow area. The opening of VLI-2 can be set to approximately 0.5 mm or as 0.15 in'. The dimensionless friction factor is defined and calculated as follows: K = 17.2 d' AP Q2 where: connecting pipe intemal diameter (in.) d = AP = pressure drop across valve (psi) Q= mass flow rate through valves Ob /sec) a Table 3.3-3 provides additional data on the valves used in the ADS Phase Bl tests. No additional data are available on the steam supply valves VI-1.1 and VR-1.1. Figure 3.3-2 shows a graph of the flow area for VLI-1 as a function of stem travel Gift). u:\\ap600\\l776w.2.non: Ibot 2195 3-9

..--.~. .~ d .I i l VALVE CHARACTERISTICS * 'l Valve Size (in.) Full Open Area (in.8) Cv Full Open VLI-I 12

- )

VLI-2 12. VAD-1 4 VAD 2 8 l ~ i VAD-3 8 l i VI-1.1 N/A N/A N/A - l t VR-1.1 N/A N/A N/A Notes: I t (1) Manufacturer's Data (2) Not Available [ t t I i I [ 'f .i t h I i B '[ uMWA1776w-2. nan:1b-042195 3-10 i --,,--,---w

e TABLE 3.3-1 ADS PHASE B1 TEST SPECIFICATION CRITICAL INSTRUMENT LIST Preferred Alternate Parameter Instrument (s) Instrument (s) Comments Pressurizer Level LTIB and LTI Water blowdowns only. Both instruments required in order to compare derived mass flows. Steam Flow FT15/FT15B Steam blowdowns only. Instmment chosen depends on flow rate. Pressurizer Pressure PT4 PTlW Alternates apply to water PE2W (for initial blowdowns only. and final pressures only) Pressurizer Dome TR4 None Steam blowdowns only. To be read Temperature manually just prior to stan of blowdown. Pressuru.er Water TElW or TE2W Water blowdowns only. No Temperature preference between instruments. In addition, TI43 to be read manually just prior to start of blowdows'. Pressure Upstream See PZR pressure instnmients. VL1-1 Temperature See PZR temperature instruments. Upstream VL1-1 Pressure PE3W or PT4W Water blowdowns only. No Downstream VL1-1/ preference between instruments. Upstream VLI-2 Temperature TE3W or TE4W Water blowdowns only. No Downstream VLI-1/ preference between instruments. Upstream VL1-2 Pressure PESW PT6W Water blowdowns only. Downstream VLI Temperature TE5W TE6W Water blowdowns only. Downstream VLI-2 ADS Inlet Pressure PT6W PE7W (stage 1) Ifinstrument(s)in ADS package PTIOW (stage 2) used, it/they must correspond with PE13W (stage 3) the open ADS stages. PE5W i i u%p6(EA1776w 2.non:ltwGt2195 3-l 1

~... I TABLE 3.31 (Cont.) ADS PHASE B1 TEST SPECIFICATION CRITICAL INSTRUMENT LIST i Preferred Alternate Parameter lastrunrent(s) lastrument(s) Coenments I i ADS Inlet TE6W TE7W (stage 1) If prefened instrument not Temperature. TE10W (stage 2) available, then alternate associated TE13W (stage 3) with each open ADS stage must be { available. l ADS Discharge PE16W - PE9W (stage'1) Ifinstrument(s)in ADS package -[ Pressure PE12W (stage 2) used, it/they must conespond with PE15W (stage 3) the open ADS stages.' IT61B ' ADS Discharge TE16W TE9W (stage 1) If prefened instrument not Temperature TE12W (stage 2) avadabic, then alternate associated TE15W (stage 3) with each open ADS stage must be ~ available. l Sparger Body / Arm See Comments PE2 or PE3 or PE6 No prefened instruments. A total Pressure of three different sparger arm i PE2 or PE4 or PE7 pressure measuremems is W. [ PE2 or PE5 or PE8 Sparger Arm See Comments Six from: TE7, No prefened instr =nante. A total Temperature TE8, TE9, TE10, of six different sparger temperanare TEl1, TE12, TE13, measununents is required. TE14.TE15 TE16. I TE17.TE18 Pool Pressure 1 PE16 or PEl9 No prefened instrument. Other (elev = 4270 mm) pool pressure measurements close to l sparger arms may be +_-+;C Pool Pressure 2 PE17 or PE20 No prefened instrument. Other (elev = 6700 mm) pool pressure measurements may be j acceptable. I i i I r f I i t F a:w*omim.2.wpt:ibo41395 3-12 e

r e (a.b,c) TABLE 3.3 2 M ASS MEASUREMENT COMPARISON i i l l l l l l \\ 1 l l i l l i 1' a:\\np600U776w-2.non:!be42195 3-13

_..m..._._ 4 .i (a,b.c) ' TABI.E 3.3 2 - (Coet.) M ASS MEASUREMENT COMPARISON j i i r - r L i 1 ) [ t G i t I r i. 1 i t i r ? t -7 -1 i i r i i i l r i I i t =: Win 6.-2.non:1b 042195 3 14 lt w- ~.- e---

~'*. I' 1 TABLE 3.3-3 ' - VALVE VLI 2 CHARACTERIZATION TEST RESULTS Friction Factor Valve Opening Flow Area -K Test Number ' ' (mm) - ( in.') A023PF0D 176-(a.b.c) '~ A022PFOC 180 1 A021PF0B-184 A018PF1B 188.2 A019PF2B 191.2 A020PF3B 193.9 A0llPF5 204.5 A012PF6 209.9 -i A015PF9 226.4 A013PF7 230.8 l A016PF10 241.1 A014PF8 251.5 A017PFil 272.6 A024PF12 393.2 6-I unap60(n1776w-2,wpf.1MM1395 3-15

~ ,b,C a l f 1 i i I L ~ u:\\np600\\l776w-2.non:1b-042195 3.]6

w- ~ (e c) l L unap600\\1776w.22on:Ib4M2195 3-17

y7 3r + a .t .t >i P 4.0 ' ADS PHASE B1 TESTS AND TEST RESULTS y ,.7 Dis section discusses the individual tests' performed during the Phase B1 test program. De test numbering scheme involves seven characters: the first character, A, refers to the ADS test facility; the next three characters refer to a unique test sequence number; and the last three characters refer to the l test matrix number (Table 1.2-1). The test results for the ADS Phase Bl test runs are presented grouped by test series..Each section summarizes the procedure for a test series subsecdon and presents the results of each matrix test. Presentation of each individual inatrix test discusses the acceptability of the test data, based on the. . criteria specified in Subsection 3.3.1, and discusses the test conditions and the achieved mass flow and I qualhy conditione, Section 4.5 provides an evaluation of all the tests in the context of the overall test . program objectives and results and code validation requirements. As a basis for quantitative assessruent of whether the mass flow and fluid quality met the test intent, a tolerance ofi 25 percent' on the inteadtd test points shown on Figures 1,2-1,1.2-2,1.2-3, and 1.2-4 was applied. In general, the achievement of the intended flows and quality do not invalidate a test since the data are still l acceptable for code validation activities. A table is presented with each test series providing summary data of the tests. %c tables include supply tank initial and final pressures and the total mass discharged from the tant throughout each test { together with the initial and final temperatures and level in the quench tank. De flow area of VI.I-2 l is txesented together with the mass flow rate calculated at 20 seconds into the transient, which is close to the midpoint of each transient and close to the time where the flow reaches a pseudo-steady state. l Conditions at the entrance and exit of the ADS valve package and in sparger arm A are also presented at 20 seconds into the transient. The data plots presented within this section and Appendix C were selected to provide an overall picture of the test performance. Included are plots of steam / water line pressures, IRWST pressure and temperature data, and the calcult;ted steam quality? and mass flow data. Each subsection contains plots of the steam line pressures along the piping length, which provide a pictare of the pressure decrease from the supply tank to the sparger. Comparison plots of sparger arm A and quench tank temperatures are also provided. Quench tank temperatures are taken at various elevations in between the sparger arms. An index is placed at the start of each appendix subsection to aid in retrieval of the data. The electronic data files for all acceptable tests can be found listed in Appendix F. i: 8 Minimum tolerance is t 2.5 percent in quality and 2 25 lb/sec in mass flow rate. l 2 Use the calculated steam quality at. ~20 acconds, when flow and pressure in the piping has been established (See Subsection 3.3.2). I unap60041776w.3.aoe:lb-N2195 4-1

O 4.1 100-Series Tests The 100-series matrix tests were performed with the facility configured for saturated steam flow (Figure 2.1-2). An orifice was installed in each stage of the ADS package to substitute for the resistance of the second valve (VAD-4,-5, or -6). The steam / water supply tank was preheated to the specified test pressure. The quench tank was maintained at an initial temperature of <120'F for all tests in this series. He 100-series matrix tests were performed with the 4-in. and 8-in. ADS valves fully open or fully closed. Four ADS operating models were simulated: Test 110 was performed with the ADS stage 1,4-in. globe valve open, and the stage 2 and 3,8-in. gate valves closed. Test 120 simulated the ADS stage 1 and 2 flow path with the 4-in. globe valve open, the stage 2, 8-in. gate valve open, and the stage 3, 8-in. gate valve closed. Test 130 simulated ADS stage 1 and 3 flow path with the 4-in. globe valve open, and the stage 3, 8-in. gate valve, open and the stage 2, 8-in. gate valve, closed. Test 140 simulated ADS stage 1,2, and 3 flow path with the 4-in. globe and both 8-in. gate valves open. 4.1.1 General 100-Series Test Procedure De 100-series ADS matrix tests were initiated by allowing saturated steam from the supply tank to blowdown through the open VR 1.1. The steam flow was directed through a moisture separator, which removed liquid from the fluid before flowing through the venturi for flow measurement and the ADS valve / piping package. The steam flowed through the selected combination of ADS flow paths and discharged into the quench tank through the sparger. De mass flow rate through the ADS package was controlled by the initial pressurizer pressure and temperature and the position of the steam supply isolation valve VI-1.1 and control valve VR-1.1. Reference 5 contains the complete test procedure. De following major steps were taken for each test run: Re watu/ steam line was disconnected and isolated, and the steam supply line was connected to the ADS inlet piping (Figure 2.1-2). De VLI-1 and VLI-212-in. gate valves were closed for this test series. Orifices were installed in place of valves VAD.4, VAD-5, and VAD-6 l': 'he ADS ydve package. l uAng6XM776w.3.mce:Ib-042195 4-2

All ADS valves (VAD-1, VAD-2 and VAD-3) were initially closed. The steam / water supply tank was filled with ~12 metric tonnes of demineralized water and heated to the pressure shown in Table 1.2-1. VR-1.1 was fully opened (except for test 110). The piping from the supply taak to the ADS valves was heated up using steam from the supply tank. All piping between the valve VI-1.1 and the ADS valves was drained and depressurized. The desired ADS valves were then opened fully, as specified in Table 1.2-1. Test runs were initiated by opening valve VI-1.1 to its full open position. Valve VR-1.1 was adjusted to full open after 13 seconds for test A040110. The test runs were terminated by closing VI-1.1 or VR-1.1 after approximately 100 seconds for test 110, or 60 seconds for tests 120,130, and 140. j i 4.1.2 100-Series Test Results ne following sections contain a brief description of the tests performed during the ADS 100-series tests and a presentation of the various plots associated with each test. 4.1.2.1 Matrix Test 110 Test A040110 was performed with only the ADS stage 1 valve (VAD-1) fully open. De supply tank was preheated and maintained at a measured pressure of about 2452 psig. Figure 4.1-1 shows the steam flow rate during the test run calculated from the venturi AP measurement cross-plotted with the steam quality based on the supply tank saturated vapor enthalpy at the entrance to the ADS valve package. The steam flow rate was increased after 13 seconds by opening VR-1.1 from 55 percent to full open. The flow increased smoothly and peaked at approximately 20 seconds as the pressure upstream of the ADS valve package reached approximately 2000 psig. This corresponds to the expected 20 second stroke time of the AP500 ADS stage 1 globe value. The maximum flow rate achieved was approximately [ ]*# with approximately [ ]"# at the inlet to the ADS stage I flow path. The steam quality entering the ADS package was maintained at essentially 100 percent throughout the test. Figure 4.1-2 shows the line pressure versus sensor location along the steam flow path with the major (~1000 psi) pressure drop occurring across VAD-1. Figures 4.1-3 and 4.1-4 show the temperatures in n:W1776w 3 non:!b-412195 4-3

sparger arm A and selected quench tank temperatures of various elevations between sparger arms throughout the test. No anomalies were observed during the test performance and although the venturi AP was small (6 psi l maximum); the AP sensor was found to be very linear in the range of 0 to 100 psi. With a standard { deviation of approximately 0.07 psi.* 4.1.2.2 Matrix Test 120 I Test A041120 was performed with ADS stage 1 valve (VAD-1) and stage 2 valve (VAD-2) fully open. The supply tank was heated and maintained at a measured pressure of 1581 psig. Figure 4.1-5 shows the steam flow rate for the test, which reached a peak of approximately [ ]'A' pressure upstream of the ADS valve / piping package at approximately 5 seconds. The steam quality entering the ADS package was maintained at essentially 100 percent during the test (Figure 4.1-5). Figure 4.1-6 shows the line pressure versus sensor location along the flow path with the major pressure drops occurring across VAD-1 and VAD-2. Mgerc* +.1-7 and 4.1-8 show sparger arm A and selected quench tank temperatures between the sparger a A Osoughout the test. 4.1.2.3 Matrix Test 130 Test A038130 was performed with ADS stage 1 vr.lve (VAD-1) and stage 3 valve (VAD-3) fully open. The supply tank was preheated and mainta'Jied at a measured pressure of 1194 psig. Figure 4.1-9 shows the steam flow rate fer the test, which reached a peak of [ ]*'at ~5 seconds. 'Ihe steam quality entering the ADS package was maintained at essentially 100 percent during the test (Figure 4.1-9). Figure 4.1-10 shows the pressure versus sensor location along the steam flow path with the major l pressure drops occurring across VAD-1 and VAD-3. Figures 4.1-11 and 11 -12 show sparger arm A and selected quench tank temperatures between the sparger arms through; oc test. 4.1.2.4 Matrix Test 140 Test A039140 was performed with the ADS stage 1 valve VAD-1, stage 2, VAD-2, and stage 3 VAD-3 fully open. The supply tank was preheated and maintained at a pressure of approximately 1562 psig. Figure 4.1-13 shows the steam flow rate for the test, which reached a peak of almost [ ]** at ~5 seconds. The steam quality entering the ADS package was maintained at essentially 100 percent during the test (Figure 4.1-13). Figure 4.1-14 shows the pressure versus sensor location along the steam flow path with the major pressure drops occurring across each of the ADS valves. Figures 4.1-15 and 4.1-16 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. n:\\ap60(A1776w-3.non:Ib-o42195 4-4

4.1.3 Summary of Evaluation of 100-Series Tests All critical instruments functioned satisfactorily during the 100-series tests and the initial pressure of the supply tank ns within specification in all cases. Table 4.1.1 provides a summary of the test conditions achiesed during each of the 100-series tests described in Subsections 4.1.2.1 through 4.1.2.4. The tests all performed very near to the test objectives as measured by mass flow rate versus steam quality. There is no valid redundant mass flow calculation for the steam flow tests since the moisture separator removes entrained water prior to the flow meter (see subsection 3.3.2.1). The 100-series matrix tests were performed at steam qualities into the ADS package and out of the sparger of approximately 100 percent. 'Ihe sparger temperatures are approximately 15 F higher than saturation conditions at the indicated pressures. Level changes in the quench tank were estimated at approximately 85 percent of the total change in pressure inventory. The bottom of the quench tank remained at pretest temperamres. Tests A040110, A041120, A038130, and A039140 were all considered acceptable since the acceptance criteria listed in subsection 3.3.1 were met. 1 uwam1776w-3.no..ibe:2195 45

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j t l ~ l l 4.2 200-Series Tests t - The 200-series matrix tests were performed to simulate AP600 plant ADS flow conditions when two-t phase mixture was vented from the top of the pressurizer with selected ADS stages fully open or fully closed. The 200-series test configuration included orifices and spool sections that represented the full j open positions of valves VAD-4, -5, and -6 in the ADS stages 1,2, and 3, respectively (see Subsection 2.1.3). The quench tank was maintained at an initial temperature of <120*F for all test runs in this series. Figures 4.2-1 through 4.2-4 illustrates mass flow rates and quality of the intended i test conditions with the achieved nominal test conditions at 20 seconds into the blowdown. The shaded areas reflect the range of predicted ADS flow conditions for the AP600 plant, i t The 200-series tests were performed with the appropriate 4-in and 8-in. ADS valves fully open or fully closed. The three ADS operational stages were simulated as follows: I Tests 210,211, and 212 were performed with the ADS stage 1,4-in. globe valve open, and the stage 2 and stage 3,8-in. gate valves closed. Tests 220 and 221 were performed with ADS stage 1, 4-in. globe valve open, the = stage 2, 8-in. gate valve open, and the stage 3, 8-in. gate valve closed. h I Tests 230 and 231 were performed with ADS stage 1,4-in. globe valve open, the stage 3, 8-in. gate valve open, and the stage 2, 8-in. gate valve closed. f Tests 240,241, and 242 were performed with ADS stages 1,2, and 3 operation f I simulated with the 4-in. globe and both 8-in. gate valves open. Test 250 was performed with only ADS stage 2,8-in. gate valve open. 4.2.1 General 200-Series Test Procedure 6 The 200-series matrix tests were initiated by allowing saturated water from the supply tank to blowdown through the partially open VLI-2, providing two-phase flow to the ADS valve / piping package. The two-phase mixture flowed through selected combinations of ADS flow paths and l discharged into the quench tank through the sparger. The mass flow rate and fluid quality through the l ADS package was controlled by the initial supply tank pressure / temperature and the open position (flow area) of the VLI-212-in. gate valve. Reference 5 contains the complete test procedure. i The following procedure was followed for each test run: L i i l The facility was configured in the two-phase flow configuration (Figure 2.1-3), with the line from the bottom of the steam / water supply tank connected to the ADS inlet piping. c AnWXAnonpmp\\1776w-5.non:n-o42295 4-23

y 'l c; Orifices were installed in pbce of valves VAD-4,' VAD-5, and VAD-6 in the ADS. ' valve package. l .i The VLI-1 and _VLI-212-in.~ gate valves.were initially closed to isolate the steam / water . supply tank from the downstream pipmg. J i ~All ADS valves (VAD-1, VAD-2,' and VAD-3) were closed. ) ^ 1he steam / water supply tank was filled with ~18 metric tonnes of demineralized water f and heated to the pressure shown in Table 1.2-1. 'Ihe piping from the VLI-l to the ADS valves was heated using steam from the supply tank.- i The VLI-2 was opened to the flow area shown in Table 4.2-1.

j The piping from the supply tank to VLI-1 was drained until the water upstream of VLI-1 was within ~50'F of the supply tank saturation temperature.

i All piping between VLI-1 and the ADS valves was drained and depressurized. The e desired ADS flow paths specified in Table 1.2-1 were then opened. 1 The test runs were initiated by opening the VL1-1 to its full open position. i l The test runs were terminated by closing the VLI-2 from its partially open position.' . l The test runs were terminated so that the final supply tank water level was 220 percent .l of the vessel height. j i 1he VLI-1 was reclosed to complete isolation of the supply tank. .l 4.2.2 200-Series Test Results 1 The following sections contain a brief description of the tests performed during 'he 200-serics matrix tests and selected plots associated with each test. 4.2.2.1 Matrix Test 210 Matrix test 210 was performed with only the ADS stage 1 valve (VAD-1) open. 'Ihe supply tank j was preheated and maintained at a measured pressure of 2213 psig. - The steam / water flow rate for test ] A037210 was controlled by the opening VLI-2 to a flow area of 6.85 in.2 Figure 4.2-5 shows the l steam / water flow rate and fluid quality history for the test at the ADS inlet. i I u:h\\l776w-5.nos:1be42295 4-24 ,m. y. g. g .-e-- -r ,, -., -. 6,. ,n- ,.p_ ,-e., ,m-.,-,r F

Figure 4.2-6 shows the pressure versus sensor location along the fluid flow path. The large pressure drop across VAD-1 indicates that the flow was choked. Figures 4.2-7 and 4.2-8 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. De test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.2 hiatrix Test 211 Test A026211 was performed with only the ADS stage 1 valve (VAD-1) open. De supply tank was preheated and maintained at a measured pressure of 2217 psig. He steam / water flow rate was controlled by opening VL1-2 to a flow area of 7.73 in.2 Figure 4.2.2-9 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. Figure 4.2-10 shows the pressure versus sensor location along the flow path. The large pressure drop across VAD-1 indicates that the flow was choked. Figures 4.2-11 and 4.2-12 show a history of the sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. Note that the IBM sparger and quench tank data was stopped after about 35 seconds of the blowdown. De test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.3 hiatrix Test 212 Test A027212 was performed with only the ADS stage 1 valve (VAD-1) open. He supply tank was preheated and maintained at a measured pressure of 2215 psig. He steam / water flow rate was controlled by opening VL1-2 to a flow area of 9.37 in.2 Figure 4.2-13 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. Figure 4.2-14 shows the pressure versus sensor location along the flow path. The large pressure drop across VAD-1 indicates that the flow was choked. Figures 4.2-15 and 4.2-16 show a sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. The test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.4 Afatrix Test 220 Test A030220 was performeo wuh the ADS stage 1 valve (VAD-1) and stage 2 valve (VAD-2) open. He supply tank was preheated and maintained at a measured pressure of 1198 psig. The steam / water flow rate was controlled by opening VL1-2 to a flow area of 9.37 in.2 Figure 4.2-17 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. u:\\np600\\nonprop\\l776w-5.non:lt>o42295 4-25

Figure 4.2-18 shows the pressure versus sensor location along the flow path. The large pressure drop across VLI-2 indicates that the flow was choked. Figures 4.2-19 and 4.2-20 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. De test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.5 Matrix Test 221 Test A028221 was performed with ADS stage 1 valve (VAD-1) and stage 2 valve (VAD-2) open. The supply tank was preheated and maintained at a measured pressure of 2228 psig. He steam / water 2 flow rate was controlled by opening VLI-2 to a flow area of 9.37 in. Figure 4.2-21 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. Figure 4.2-22 shows the pressure versus sensor location along the flow path. The large pressure drop across VLI-2 indicates that the flow was choked. Figures 4.2-23 and 4.2-24 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.6 Matrix Test 230 Test A031230 was performed with ADS stage 1 valve (VAD-1) and stage 3 valve (VAD-3) open. The supply tank was preheated and maintained at a measured pressure of 1179 psig. He steam / water flow rate was controlled by opening VLI-2 to a flow area of 9.37 in.2 pigure 4.2-25 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. Figure 4.2-26 shows the pressure versus sensor location along the flow path. De large pressure drop across VLI-2 indicates that the flow was choked. Figures 4.2-27 and 4.2-28 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.7 Matrix Test 231 Test A029231 was performed with the ADS stage 1 valve (VAD-1) and stage 3 valve (VAD-3) open. The supply tank was preheated and maintained at a measured pressure of 2244 psig. The steam / water flow rate was controlled by opening VLI-2 to a flow area of 9.37 in.2 Figure 4.2-29 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. uwwxnnonpropu776 -5. on;iw42295 4-26

Figure 4.2-30 shows the pressure versus sensor location along the fluid flow path. The large pressure drop across VLI-2 mdicates that the flow was choked. Figures 4.2-31 and 4.2-32 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.8 Matrix Test 240 Test A035240 was performed with the ADS stage 1 valve (VAD-1), stage 2 valve (VAD-2), and stage 3 valve (VAD-3) open. The supply tank was preheated and maintained at a measured pressure of 1188 psig. De steam / water flow rate was controlled by opening VLI-2 to a flow area of 9.37 in.2 Figure 4.2-33 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. Figure 4.2-34 shows the pressure versus sensor location along the flow path. The large pressure drop across VLI-2 indicates that the flow was choked. Figures 4.2-35 and 4.2-36 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.9 Matrix Test 241 Test A033241 was performed with the ADS stage 1 valve (VAD-1), stage 2 valve (VAD-2), and stage 3 value (VAD-3) open. De supply tank was preheated and maintained at a measured pressure 2 of 486 psig. The steam / water flow rate was controlled by opening VLI-2 to a flow area of 9.37 in, Figure 4.2-37 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. Figure 4.2-38 shows the pressure versus sensor location along the flow path. De large pressure drop across VLI-2 indicates that the flow was choked. Figures 4.2-39 and 4.2-40 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. i He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.2.2.10 Matrix Test 242 i Test A034242 was performed with the ADS stage 1 valve (VAD-1), stage 2 valve (VAD-2) and stage 3 valve (VAD-3) open. The supply tank was preheated and maintained at a measured pressure of 470 psig. De steam / water flow rate was controlled by opening VLI-2 to a flow area of 13.1 in.2 Figure 4.2-41 shows the steam / water flow rate and fluid quality history for the test at the ADS inlet. l u:Wowarnv\\1776--5 non:1b-042295 4-27 I

g O Figure 4.2-42 shows the pressure versus sensor location along the flow path." Figures'4.2-43 and. { s4.2-44 show sparger arm A and selected quench tank temperatures between the sparger arms { throughout the test.

r 1

Despite a larger flow area on VLI-2, the steam / water flow is no greater than test A033241 (which had j

the same supply pressure), but the steam quality was reduced. 'Ihe pressure drop across VLI-2 'of. E approximately 50 percent indicates it still was the controlling restriction. l The test was performed in accordance with the test requirements, and the data are acceptable for use in j code validation activities. i .i 4.2.2.11 Matrix Test 250 i Test A036250 was performed with only ADS stage 2 valve (VAD-2) open. L The supply tank.was preheated and maintained at a measured pressure of 1188 psig. 'Ihe steam / water flow rateLwas controlled by opening VLI-2 to a flow area of 13.1 in.2 Figure 4.2-45 shows the steam / water flow rate ' and fluid quality history for the test at the ADS inlet.- Figure 4.2-46 shows the pressure versus sensor location along the flow path. 'Ihe large pressure drop 1 of ~60 percent that occurs across VAD-2 indicates that the flow was choked. Figures 4.2-47 and 4.2-48 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the j test. i t The te.it was puformed in accordance with the test requirements, and the data are acceptable for use in codr. va3dation activities. 4.2.3 Summary of Evaluation of 200-Series Tests Table 4.2-1 provides a summary of the test results for each of the 200-series test runs described in.. Subsections 4.2.2.1 through 4.2.2.11. Figures 4.2-1 through 4.2-4 illustrate the nominal behavior-(20 seconds into the transient) of the 200-series tests relative to the test objectives. The ADS stage I test runs (A037210, A026211, and A027212) shown on Figure 4.2-1 all had higher mass flow rates than the test intent and lower in steam qualities. 'Ihese results were consistent with - l ' the flow area of VLI-2 used being larger than originally planned and the similarity in the achieved 'l flows is representative of choked flow across VAD-1. Although the achieved flow rates and fluid i qualities were outside the tolerance of the intended test point, the data are nevertheless acceptable and suitable for use in code validation. ] 'Ihe ADS stages 1 and 2 test runs (A030220 and A028221) and stages 1 and 3 test runs (A031230 and ~' A029231) were performed within the 25-percent acceptance tolerance of the intended mass flow rates - 3 -i manp600\\nonprop\\1776w-5.oon:ltr042295 4-28 + ~- m ,...m-- ~ +...

and qualities as shown in Figure 4.2-2. Large pressure drops indicative of choked flow were measured across VLI-2 in all four tests. The ADS stages 1,2, and 3 tests (A035240, A033241 and A034242) were performed within the 25-percent acceptance tolerance to the intended tests points, as shown in Figure 4.2-3, and all test points remained within the AP600 operating envelope defined by the shaded area of Figure 4.2-3, as intended. Large pressure drops indicative of choked flow were observed across VLI-2 in all three tests. Test A036250 simulated an inadvertent opening of ADS stage 2. The fluid quality achieved in this test was lower than intended but the data are acceptable and suitable for use in code validation. The fluid shows a marked increase in quality, nearly doubling in all cases, in the sparger as compared to the ADS inlet measured in the sparger arms. In general, temperatures appear to be about 13*F higher than saturation temperature at the indicated pressures. This would indicate thr_t the steam was superheated, which is not possible under equilibrium conditions. It is recommended that the saturation temperatures be used. Immediately after the closure of VL1-2, there was a sudden drop in the temperature within the sparger arms lasting about 5 seconds in all 200-series tests. The temperature then recovers to the trend of the previous temperatures in most cases. Review of the pressures within the sparger arms show a negatve pressure pulse lasting <1 second at the same time, indicating that the arms temporarily refill with quench tank water. No adverse effects of this refill were noted, however. In general, quench tank volume appears to have increased by about 85 percent of the total mass change in the supply tank. The bottom of the quench tank remained essentially unmixed with temperature changes 52'F. All 200-series tests presented provide data acceptable for code validation. All critical instruments or their backups and the data acquisition systems performed satisfactorily. 1 l unap600\\nonprop\\l776w-5.non:1b-042295 4-29

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i e f 8 hl 11 8 55 h en 8 1 R gg ~ 8 S 8 8 E Dl ~ I I I i i e i i iiiI i_o 8 8 8 8,8 v-N cc) N e i &JJJ h } s (Des /LAXIQ eley AAold esen eJnpqW Figure 4.2-4 Series 200 Tests Intended Performance versus Achieved Performance for Stage 2 i Operation u:WW0eonprop\\1776w-5.non:Ib-042295 4-34

y >. i, i .g i i f 4 -i b -t t i l t 'i r t i I i i t I Figures 4.2-5 through 4.2-48 are not included in the non-proprietary version of this document. e i I i i i I a:Womprop\\1776w-5.aon:1b 042395

4.3. 300-Series Cold Quench Tank Tests The 300-series cold quench tank matrix tests were performed with the facility configured for two-phase flow (Figure 2.1-3). Full-diameter spool pieces were installed in each stage of the ADS package to simulate valves VAD-4, -5, and -6 with minimum flow resistances. The steam / water supply tank was preheated to the specified test pressure. The quench tank was maintained at an initial temperature of <140*F for all tests. Figures 4.3-1 through 4.3-3 illustrate mass flow rates and steam qualities of the intended test conditions with the achieved test conditions at the inlet of the ADS package. The shaded area reflects the range of predicted ADS flow conditions for the AP600 plant. The 300-series tests were performed with the 4-in. and 8-in. ADS valves fully open or fully closed. The three ADS operational stages were simulated as follows: Tests 310,311, and 312 were performed with ADS stage 1,2, and 3 operation simulated with the stage 1,4-in. globe and the stage 2 and stage 3,8-in. gate valves fully open. Tests 330 and 331 were performed with ADS stage I and 2 operation simulated with the stage 1,4-in. globe valve fully open, the stage 2,8-in. gate valve fully open, and the stage 3,8-in. gate valve fully closed. Test 340 was perfonned with the ADS stage 2, 8-in. gate valve fully open, simulating inadvertent opening of ADS stage 2. 4.3.1 General 300-Series Cold Quench Tank Test Procedure The 300-series cold quench tank matrix tests were conducted with two-phase flow through the ADS package to the sparger at various mass flow rates. The mass flow rate and fluid qualities through the ADS package were controlled by the initial supply tank pressure, water temperature, and the open position of VL1-2 valve. The 300-series ADS cold quench tank tests were initiated by allowing saturated water from the bottom of the supply tank to blowdown through the preset partially open VLI-212-in. gate valve, providing two-phase flow to the valve / piping package. The two-phase mixture flowed through selected combinations of ADS flow paths and discharged into the quench tank through the sparger. Reference 5 contains the complete test procedure. The following procedure was followed for the cold 300-series test runs: The facility was configured in the two-phase flow configuration (Figure 2.1-2) with the line from the bottom of the water / steam supply tank connected to the ADS inlet piping. Full bore spool pieces (without orifices) were installed in place of valves VAD-4, VAD-5, and VAD-6 in the ADS valve package. u :\\ap600%nprop\\1776w-3a.non:1 b-042195 4-79

r; - - 7 1 t i l .The VLI-1 and VLI-212-in. gate valves were initially closed to isolate the' steam / water i e supply tank from the downstream piping. All ADS valves (VAD-1, VAD-2 and VAD-3) were closed. 1 'Ihe steam / water supply tank was filled with ~18 metric tonnes of demineralized water. and heated to the pressure shown in Table 4.3-1. i t I 'Ihe piping from VLI-1 to the ADS valves was heated using steam from the supply tank. VLI-2 was opened to the flow area shown in Table 4.3-1. The piping from the supply tank to VLI-1 was drained until the _ water upstream was '

{

within ~50'F of the supply tank saturation temperature. }q All piping between VLI-1 and the ADS valves was drained and depressurized. The .i desired ADS valves were then opened to the flow paths specified in Table 1.2-1. I The test runs were initiated by opening VLI-1 to its full open position. y ti The test runs were terminated by closing VLI-2 from its partially open position. 'Ihe j test runs were terminated so that the final supply tank water level was 2 25 percent. - j

i The VLI-1 was reclosed to complete isolation of the supply tank. _

l ~ All open ADS valves were closed. i 4.3.2 300-Series Cold Quench Tank Test Results ' q i 'Ihe following sections contain a brief description of the tests performed and a presentation of the l various data plots associated with each test. j ) I 4.3.2.1 Matrix Test 310 i l . Test A044310 was performed with the ADS stage 1 valve (VAD-1), stage 2 valve (VAD-2), and stage 3 valve (VAD-3) fully open. The supply tank was preheated and mainWned at a measured pressure of 2196 psig. The steam / water flow control valve (VLI-2) was set to a opening area of 13.1 in.2 l Figure 4.3-4 shows the steam / water flow rate and fluid quality history at the ADS package. Figure 4.3-5 shows the pressure versus sensor location along the flow path at various times during the j test. The large pressure drop (62 percent) across VLI 2 indicates that flow was choked and VLI-2 a q l n: sap 6m.ompropimw3a. om:1w42195 4-80

l appeared to be the controlling resistance. Figures 43-6 and 43-7 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. Review of the pressures downstream of Pf1W indicate a pressure pulse at approximately 15 seconds with a duration of approximately I second; no other effects of this were noted. De test was performed in accordance with the test requirements, and the data are suitable for use in code validation activities. 43.2.2 Matrix Test 311 Test A002311 was performed with the ADS stage 1 valve (VAD-1), stage 2 valve (VAD-2), and stage 3 valve (VAD-3) fully open. The supply tank was preheated and maintained at a measured pressure of 1220 psig. The steam / water flow control valve (VLI-2) was set to a opening area of 11.27 in.' Figure 43-8 shows the steam flow rate and fluid quality history at the ADS package inlet. Figure 4.3-9 shows the pressure versus sensor location along the flow path at various times during the test. Figure 4.3-9 is broken to provide additional clarity for the pressure through the various ADS stages. De large pressure drop (62 percent) across VLI-2 indicates flow was choked and VLI-2 appeared to be the controlling resistance. Figures 43-10 and 4.3-11 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. De test was performed in accordance with the test requirements, and the data are suitable for use in code validation activities. 43.23 Matrix Test 312 Test AM2312 was performed with the ADS stage 1 valve (VAD-1), stage 2 valve (VAD-2), and stage 3 valve (VAD-3) fully open. The supply tank was preheated and maintained at measured pressure of 496 psig. The steam / water flow control valve (VLI-2) was set to a opening area of 20.18 in.2 He mass flow rate and fluid quality history at the ADS package inlet for test AM2312 is shown in Figure 43-12. Figure 43-13 shows the pressure versus sensor location along the flow path nt various times during the test. Flow did not appear to be choked across VLI-2. Figures 43-14 and 43-15 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. De test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. u Anp60L%onprop\\l 776w-3a.non:I M42195 48)

4.3.2.4 Matris Test 330 Test run A0N330 was performed with ADS stage 1 valve (VAD-1) and ADS stage 2 valve (VAD-2) fully open. De supply tank was preheated and maintained at a measured pressure of 1817 psig. The steam / water flow control valve (VLI-2) was set to a opening area of 13.1 in.2 Figure 4.3-16 shows the steam flow rate and fluid quality history at the ADS package inlet. Figure 4.3-17 shows the pressure versus sensor location along the flow path at various times during the test. The large pressure drop (62 percent) across VLI-2 indicates that the flow was choked and VLI-2 appeared to be the controlling resistance. Figures 4.3-18 and 4.3-19 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. The test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.3.2.5 Matrix Test 331 Matrix test 331 was performed with ADS stage 1 valve (VAD-1) and stage 2 valve (VAD-2) fully open. The supply tank was preheated and maintained at a measured pressure of 1202 psig for test run A003331. The steam / water flow control valve (VLI-2) was set to a opening area of 20.18 in.2 The mass flow rate and fluid quality at the ADS inlet for test run A003331 is shown in Figure 4.3-20. Figure 4.3-21 shows the pressure versus sensor location along the fluid flow path at various times during the test; no obvious choke points were noted upstream of the sparger. Figures 4.3-22 and 4.3-23 show the sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. In Figure 4.3-23, thermocouples TE27 and TE30 show a 2-second interval where the indicated temperature drops to 32*F. This is a spurious signal and should be ignored. Matrix test 331 was repeated as test run AM3331 in an attempt to achieve higher mass flow with lower steam quality by increasing the flow area of VLI-2 to 27.07 in.2 The supply tank was preheated and maintained at a measured pressure of 1208 psig. The steam flow rate and fluid quality history at the ADS inlet is shown in Figure 4.3-24. Figure 4.3-25 shows the pressure versus sensor location along the fluid flow path at various times during the test; no obvious choke points were noted upstream of the sparger. Figures 4.3-26 to 4.3-27 show sparger arm A and seleced quench tank temperatures between the sparger arms throughout the test. Test run AM3331, as expected, achieved a higher mass flow and steam quality than AG%331. The results of test runs A003331 and AM3331 are both presented in Appendix C, since both provide acceptable test data suitable for use in code validation. i u:\\np600'monprop\\l776w 3toon:lb-042195 4-82

43.2.6 Matrix Test 340 Matrix test 340 was performed with ADS stage 2 valve (VAD-2) fully open to achieve mass flow predicted for inadvertent stage 2 operation on the AP600 plant. The supply tank was preheated and maintained at meastued pressure of 2276 psig. The steam / water flow control valve (VLI-2) was set to a opening area of 20.18 in.2 The mass flow rate and fluid quality history at the ADS package inlet for test mn A006340 is shown in Figure 43-28. Figure 43-29 shows the pressure versus sensor location along the flow path at various times during the test; no obvious choke points were noted upstream of the sparger. Figures 43-30 and 43-31 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. (Figure 43-3) Matrix test 340 was repeated as run A046340 with the flow area of VLI-2 increased to 40.11 in.2 to achieve a higher mass flow with lower steam quality. The supply tank was preheated and maintained at a measured pressure of 2209 psig. The mass flow rate and fluid quality history for test run AN6340 is shown in Figure 43-32. Figure 43-33 shows the pressure versus sensor location along the flow path at various times during the test. Figures 43-34 and 43-35 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. Test run A046340 achieved higher mass flow and lower steam quality conditions than A006340. The data from test run A046340 showed a relatively small pressure drop across VLI-2, so the mass flow was not controlled by the flow area of VLI-2. The major choke point appears to be the sparger discharge; the additional opening of VLI-2 would have produced very little change in the test results. The test data from both tests are acceptable for use in code validation activities. 4.33 Summary of Evaluation of 300-Series Cold Quench Tank Tests Table 43-1 provides a summary of the 300-series tests described in subsections 43.2.1 through 43.2.6. Figures 43-1 through 43-3 illustrate the mass flow rate and fluid quality (20 seconds into the transient) of the 300-series cold quench tank tests relative to the test objectives. Note that these tests were intended to achieve flow rates that exceeded the anticipated AP600 plant pressurizer ADS flow rates. l The ADS stages 1,2, and 3 tests (A044310, A002311, and AN2312) were all performed with very close agreement (within 1.1 percent) with the intended fluid quality. 'Ihe steam flow rates averaged i approximately 300 lb/sec. less than the intended flow rates and were outside the test point tolerance. In test runs A044310 and A002311, flow was choked at VLI-2 and fairly high fluid qualities (around j 20 percent) were generated. In test run A042312, flow did not appear to be choked at VLI-2 and the fluid quality was approximately 7 percent. The ADS stages 1 and 2 test runs (A004330 and A043331) had marked differences from each other. Test 330 had a relatively high fluid quality (17.6 percent), which is consistent with the large pressure i i uAap600\\nonpnpu?76w 3a.non:1b-042195 4-83 l

i drop (50 percent) across VLI-2. An increase in the flow area of VLI-2 would have improved the achieved flow rate and quality relative to the intended test points. Test run A043331 had a low steam quality (5.3 percent), a relatively small pressure drop (~17 percent) across VLI-2, and a steam / water flow that was lower than the intended value but within the test point tolerance. Larger openings of VLI-2 for test run A043331 would have decreased the steam quality to below the test point tolerance. Matrix test 340 was intended to simulate an inadvertent opening of ADS stage 2. Test run A046340 met the test point tolerance with a larger opening of VLI-2 than utilized in test run A006340. All 300-series cold quench tank tests presented provide data acceptable and suitable for code validation. All critical instruments or their backups and the data acquisition systems performed satisfactorily. Sparger and quench tank temperature data were recorded for only approximately 35 seconds of the transients during tests A002311, A003331, A004330, and A006340. Review of the quench tank inventory after the test runs indicates that the increase in water level of the quench tank was approximately 85 to 90 percent of the mass discharged from the supply tank. As with the 200-series tests, the measured sparger arm temperatures were approximately 13*F higher than the saturation temperature based on sparger arm pressure. Since this is not consistent, it is recommended that the saturation properties be used. Sparger arm temperatures also showed a considerable drop in temperature when VLI-2 was closed to terminate the test at approximately 40 seconds. unap60Nonpmp\\l776w 3a.non;1b-042195 4-84

4

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4.4 300-Series Hot Quench Tank Tests The 300-series hot quench tank tests were performed with the facility configured for two-phase flow l (Figure 2.1-3). Full-diameter spool pieces (without orifices) were installed in each stage of the ADS package to simulate minimum flow resistances of the second valves (VAD-4, -5, and -6). The steam / water supply tank was preheated to the specified test pressure, and the quench tank was l l maintained at an initial temperature of ~212*F for tests in this series. Figures 4.4-1 through 4.4 2 provide a summary of the intended test flow rates and steam qualities versus those achieved during the test. The shaded area of the figures reflects the range of predicted ADS flow conditions for the AP600 plant. The 300-series hot quench tank tests were performed with the 4-in. and 8-in. ADS valves fully > pen or fully closed. The three ADS operational stages were simulated as follows: l Tests 320,321, and 322 were performed with ADS stages 1,2, and 3 operation simulated with the stage 1,4-in. globe and the stage 2 and stage 3,8-in. gate valves open. Tests 350 and 351 were performed with ADS stage 1 and 2 operation simulated with the stage 1,4-in. globe valve fully open, and the stage 2,8-in. gate valve open, stage 3, 8-in. gate valve closed. 1 4.4.1 General 300-Series Hot Quench Tank Test Procedure j l 1he 300-series hot quench tank tests were initiated by allowing saturated water from the supply tank to tlowdown through the partially open VL1-2 to provide two-phase flow to the ADS valve / piping ,ackage. The two-phase fluid flowed through selected combinations of ADS flow paths and .tischarged into the heated quench tank through the sparger. The mass flow rate and fluid quality through the ADS package were controlled by the initial supply tank pressure and temperature and the open area of the VLI-212-in. gate valve. Reference 5 contains the complete test procedure. The following procedure was followed for each test run: The facility was configured in the two-phase, water / steam flow, configuration (Figure 2.1-1) with the 12-in. pipe from the bottom of the steam / water supply tank connected to the ADS inlet piping. Full bore spool pieces (without orifices) were installed in place of valves VAD-4, VAD-5, and VAD-6 in the ADS valve package. The VLI-l and VL1-212-in. gate valves were initially closed to isolate the steam / water supply tank from the downstream piping. uw6mwapn,\\i776.ad.non: b-042:95 4-121

p t The quench tank was preheated to ~212*F. All ADS valves (VAD 1, VAD-2, and VAD-3) were closed. He steam / water supply tank was filled with ~18 metric tonnes of demineralized water and heated to the pressure shown in Table 4.4-1. He piping from the VLI-1 to the ADS valves was simultaneously heated using steam from the supply tank. He VLI-2 valve was opened to the flow area shown in Table 4.4-1. The piping from the supply tank to VLI-l was drained until the water upstream of the VLI-1 was within ~50*F of the supply tank saturation temperature. All piping between the VLI-1 and the ADS valves was drained and dcpressurized. = He desired ADS valves were then opened to the flow paths specified in Table 1.2-1. He test runs were initiated by opening the VLI-1 valve to its full open position. He test runs were terminated by closing the VLI-2 valve from its partially open position. De test runs were terminated so that the final supply tank water level was 225 percent. De VLI-l was reclosed to complete isolation of the supply tank. 4.4.2 300-Series llot Quench Tank Test Results he following sections contain a brief description of the tests performed and various data plots associated with each test. 4.4.2.1 Matrix Test 320 Test run A051320 was performed with ADS stage 1 valve (VAD-1), ADS stage 2 valve (VAD-2), and stage 3 valve (VAD-3) fully open. The supply tank was preheated and maintained at a measured pressure of 2227 psig. De water flow rate was controlled by opening VLI-2 to an area of 13.1 in.2 Figure 4.4-3 shows the steam flow rate and fluid quality history at the ADS package inlet. Figure 4.4-4 shows the pressure versus sensor location along the fluid flow path. He large pressure drop across VLI-2 indicates the flow was choked; no other choke points were indicated. Figures 4.4-5 through 4.4-6 show sparger arm A and selected quench tank temperatures between the sparger arms i throughout the test. De water level of the quench tank was decreased 2.23 ft. as a result of water being ejected during the ADS discharge. u-\\np600\\nonp y\\t776w-3d.non:1b 042295 4-]22

r ne test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.4.2.2 Matrix Test 321 Test run AM8321 was performed with ADS stage 1 valve (VAD-1), ADS stage 2 valve (VAD-2), and stage 3 valve (VAD-3) fully open. The supply tank was preheated and maintained at a measured pressure of 1179 psig. The water flow rate was controlled by opening VLI-2 to an area of 14.53 in.2 Figure 4.4-7 shows the mass flow rate and fluid quality history at the ADS package inlet. Figure 4.4-8 shows the pressure versus sensor location along the fluid flow path. The large pressure drop across VLI 2 indicates that the flow was choked; no other choke points were noted before the sparger. Figures 4.4-9 and 4.4.-10 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. The water level of the quench tank increased by about 0.3 ft. as a result of sparger discharge. De test was performed in ac;ordance with the test requirements, and the data are acceptable for use in code validation activities. 4.4.2.3 Matrix Test 322 Test run AM7322 was performed with ADS stage 1 valve (VAD-1), ADS stage 2 valve (VAD-2), and stage 3 valve (VAD-3) fully open. The supply tank was preheated and maintained at a measured pressure of 4M psig. De water flow rate was controlled by opening VLI-2 to an area of 20.18 in.2 Figure 4.4-11 shows the mass flow rate and fluid quality history at the ADS package inlet. Figure 4.4-12 shows the pressure versus sensor location along the fluid flow path. Flow did not appear to be choked across VLI-2 or within the ADS package. Figures 4.4-13 and 4.4-14 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. The water level of the quench tank was increased approximately 0.4 ft. as a result of the ADS discharge. He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.4.2.4 Matrix Test 350 Test run A050350 was performed with the ADS stage 1 valve (VAD-1) and stage 2 valve (VAD-2) fully open. He supply tank was preheated and maintained at a measured pressure of 1767 psig. The water flow rate was controlled by opening VL1-2 to an area of 20.18 in.2 Figure 4.4-15 shows the mass flow rate and fluid quality history at the ADS package inlet. Figure 4.4-16 shows the pressure versus sensor location along the fluid flow path. Flow did not i I unap60tJeonprop\\t 776 wad.non:1 b-042295 4-123 I

appear to be choked across VLI-2 or within the ADS package. Figures 4.4-17 and 4.4-18 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. The water level of the quench tank was lowered 2.76 ft. as a result of water being ejected during the ADS discharge. De test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.4.2.5 Matrix Test 351 Test run AM9351 was performed with ADS stage 1 valve (VAD-1) and stage 2 valve (VAD-2) fully open. De supply tank was preheated and maintained at a measured pressure of 1183 psig. De water flow rate was controlled by the opening VLI-2. to an area of 27.07 in.2 Figure 4.4-19 shows the mass flow rate and fluid quality history at the ADS package inlet. Figure 4.4-20 shows the pressure versus sensor location along the fluid flow path. Figures 4.4-21 and 4.4-22 show sparger arm A and selected quench tank temperatures between the sparger arms throughout the test. The water level of the quench tank was lowered 0.98 ft as a result of water being ejected during the ADS discharge. He test was performed in accordance with the test requirements, and the data are acceptable for use in code validation activities. 4.4.3 Summary of Evaluation of 300-Series Ilot Quench Tank Tests Table 4.3-1 provides a summary of the test conditions achieved dudng each of the 300-series hot quench tank tests described in subsections 4.4.2.1 through 4.4.2.5. Figures 4.4-1 and 4.4-2 illustrate the flow rates and fluid qualities achieved 20 seconds into the transient relative to the test objectives; the tests were to be performed at steam / water flow rates in excess of the predicted AP600 plant pressurizer venting flow rates with similar steam qualities. Rese tests are essentially repeats of the 300-series cold quench tank tests with the quench tank heated to ~212*F. De ADS stages 1,2, and 3 test nms (A051320, AM8321, and AM7322) all achieved close agreement (within 2.1 percent) with the intended steam quality. The mass flow rates averaged approximately 280 lb/sec. less than the intended flow rates, which was outside the acceptance tolerance. In test runs A051320 and AM8321, flow was choked at VLI-2 and fairly high steam qualities (around 20 percent) were generated. In test run AM8321, flow does not appear to be choked at VLI-2, and the steam quality is only approximately 7 percent. De ADS stage 1 and 2 tests (A050350 and AM9351) both performed within the acceptance criteria. De pressure drop across VLI-2 indicates that the steam / water flow was not choked, since the ratio of the pressure drop to the valve's upstream pressure is no greater than 0.31. I u Anp600\\nonprop\\l776w-3d.non:I b o42295 4-124

~ I 4 o l All 300-series hot quench tank tests presented provide data acceptable and suitable for code validation. All critical instruments or their backups and the data acquisition systems performed satisfactorily. Discharge into the heated quench tank produced significant turbulence in the quench tank. In all five tests, the turbulence was sufficient to discharge quench tank water inventory from the tank. Again, the measured temperatures in the sparger arms exceeded the saturation temperature at sparger l r arm pressures. -1 1 ] t, t .t i i f i i a:\\np6Maomprop\\1776w-3d.aco:Ib-042295 4 125

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4.5 Summary of ADS Phase HI Tests his section reviews the overall performance of the ADS Phase Bl tests. Table 4.5-1 summarizes the ADS package performance at 20 seconds into the transients for each of the acceptable test mas. De tests are grouped by the combination of ADS valves open during the test run. Inspection of Table 4.5-1 shows that the ADS valve package was choked in all test configurations where one or two ADS valves were open, i.e., stage 1, stages 1 and 2, stages 1 and 3, or stage 2. Tests where stages 1,2, and 3 were all open did not appear to be choked. In all two-phase test cases, the fluid quality increased to between 20 and 50 percent in the sparger arms. Table 4.5-2 presents a summary of the tests performed as compared to the target matrix tests. De target tests were defined relative to the mass flow rate and fluid quality entering the ADS package. Figure 4.5-1 provides a graphic display of the tests performed. The test facility was determined to have maximum flow rate of approximately [ ]'** for a short duration. Test run A046340 produced the greatest test mass flow since the supply tank was at high pressure (2235 psig); VLI-2 was set at a 70-percent open position while a full diameter spool piece was inserted in place of VAD-5. The flow reached a peak flow of approximately [ ]*** at 13 seconds before decreasing to [ ]'** (Figure 4.3-30), as the pressure in the supply tank decreased from [ ]'** (Figure 4.3-31). The rapid reduction in the supply tank pressure limited the ability of the facility to maintain higher flow rates, which limited the maximum mass flow rate achievable. Table 4.5-2 tabulates the evaluation of each of the tests runs performed as part of the ADS Phase B1 test program. He tests are categorized as follows:

Met criteria:

Test met all acceptance criteria. + Acceptable data: De test was correctly performed and all the critical data were recorded, but the desired test conditions were not obtained. Failed test: Insufficient test data available or a failure of test equipment. In addition, test mns A007 through A024 were cold water VLI-2 valve characterization tests that are reported in subsection 3.3.2.3 and Appendix B. Bere are a total of 28 tests that produced test data suitable for use in code validation activities, of which 15 tests met all the acceptance criteria stipulated in Sections 3.3 and 4.0. Of the 13 tests not meeting the acceptance criteria,2 were satisfactorily rerun. In addition, test mn A004330 was effectively rerun during hot quench tank test run (A050350), which used a larger VLI-2 valve opening and did meet the acceptance criteria. De remaining 10 tests were divided into three groups: ADS stages 1,2, and 3, no orifices (all six tests) I ADS stage 2, with orifices (one test, A026250) u \\ap600\\nonpmp\\l776w 3tnon:ltwo42295 4-149 I

1 ADS stage 1, with orifices (three tests,200-series) + The ADS stage 1,2, and 3 tests (Table 4.5-1) were performed in both hot and cold onench tank 300-series tests. Both sets of tests produced very similar results; only test pair 311/321 were done at different VLI-2 valve openings with a 30-percent increase in valve area producing, a 30-percent increase in flow and a 2.6-percent decrease in steam quality. In general, all tests of this series showed steam qualities very similar to the intended test values and mass flows that were less than the intended values. Increasing the open area of VLI-2 would have increased the mass flow but would have reduced the steam quality. Therefore, these test runs were considered to be as close as practical to the intended test conditions and are acceptable. In test run A036250, the mass flow just met the lower bound of the flow rate range. A decrease in the VLI-2 open area in order to increase the steam quality (as desired) would have further decreased the mass flow. No significant improvement in performance by adjustment of VLI-2 could be achieved; therefore, the test is considered acceptable. The 200-series stage 1 tests were all performed at a higher flow and lower steam quality than the test intent. Adjustment of the VLI-2 opening would have improved the mass flow and fluid quality, however, preliminary analysis indicated that the tests were sufficient to satisfy the code validation effort requirements; therefore, the tests were not remn. u naiwo==pmr\\1776w-3f.non: t ho42295 4-150

E. TABLE 4.51 - OVERVIEW OF ADS TEST ARTICLE PERFORMANCE Test ADS Inlet AP Across Sparger Arm Pressure Steam Pressure Steam Quality - Quality (psia) (%) (Ib/sec) (psi) (psia) (%) u4*Narav\\1776=-3f nan:lta 295 4 151

i TABLE 4.5-1 (Cont.) OVERVIEW OF ADS TEST ARTICLE PERFORMANCE Test ADS Inlet AP Across Sparger Arm Mass Flow ADS Package Pressure Steam Pressure Steam - Quality Quality (psla) (%) (Ib/sec) (psi) (psia) (%) (ab.c) t t p t I I + s b l a:WonprogA1776w-3f.non:ltW2295 4-152

TABLE 4 4-2 COMPARISON OF INTENDED AND ACHIEVED CONDITIONS Intended Conditions Achieved Conditions Initial VLI-2 Mass Steam Mass Steam Pressure Area Flow Quality Flow Quality Test (psig) (in.8) (Ib/sec.) (%) (Ib/sec.) (%)- 1 ) l .l ump (Moonprop\\l776w.3f.nos:lt*04:295 4 153

r 1 1 TABLE 4.5-2 (Cont.) COMPARISON OF INTENDED AND ACIIIEVED CONDITIONS Intended Conditions Achieved Conditions t Initial VLI-2 M ass Steam Mass Steam Pressure Area Flow Quality Flow Quality Test (psig) (in.') ObJsec.) (%)' Ob/sec.) (%) to.o i b i unsp600\\aonprop\\t776w-3f.non:1b-042295 4-154

l TABLE 4.5 3

SUMMARY

OF ADS PHASE B1 TEST RUNS Test Status Description A001312 Failed test Failure of IBM and sparger pressure transducers A002311 Acceptable data A003331 Acceptable data Rerun as test A043331 A004330 Acceptable data A005310 Failed test No Prosig data A006340 Acceptable data Rerun as test A046340 A007 Valve Characterization Tests Through A024 A025210 Failed test DAS/ Pressure transducer anomaly A026211 Acceptable data A027212 Acceptable data A028221 Met all criteria A029231 Met all criteria A030220 Met all criteria A031230 Met all criteria A032 Failed test Aborted test run A033241 Met all criteria A034242 Met all criteria A035240 Met all critesia A036250 Acceptable data A037210 Acceptable data A038130 Met all criteria A039140 Met all criteria A040110 Met all criteria unap6(1bonprg\\l776w-3tnon:Ib-042295 4-155

i J i TABLE 4.5 3 (Cont.)

SUMMARY

OF ADS PHASE B1 TEST RERUNS Test Status Description A041120 Met all criteria j l A M 2312 Acceptable data A043331 Met all criteria Rerun of A003331 i A044310 Acceptable data A045340 Failed test No Prosig data A N6340 Met all criteria Remn of A006340 A047322 Acceptable data A048321 Acceptable data A049351 Met all criteria A050350 Met all criteria A051320 Acceptable data i t + ? I L u:Wonprop\\1776w-3f.non:IM42295 4-156

J c.'s i .) (a,b.c) { I t. t t -4 i -i e f f t + i ~t t

i

+ i e t -1 1 r .} .9 -1 ? t i 1 .!t t i.: i .i i l l I i J I l Figure 4.5-1 Summary of ADS Phase B1 Test Conditions u:h\\l776w-3toon:Ib-042295 4 157. 1 I w.< )

9

5.0 CONCLUSION

S The tests reported herein were considered acceptable and provide thermal-hydraulic performance data on single-phase steam and two-phase flow through the ADS. A total of 33 blowdown tests were performed, and only 5 tests failed because of faulty operation of the test or facility equipment. 'Ihe tests closely match the limits of the AP600 operating envelope when the peak flow rates are considered. The total mass flow from the supply tank was limited by the size of the tank. Flows in excess of 1000 lb/sec. could only be supponed for a very short time due to the opening speed of VLI-1 and the rate of pressure decrease in the supply tank. Choke points appeared at VLI-2, the ADS valve package, and/or the sparger during the majority of testing. Smaller area openings of VLI-2 <22 percent tended to produce initial choke points at VLI-2, whereas larger openings moved the choke points into the ADS and/or sparger. Fluid quality increased after each of the choke points and always increased as the steam / water mixture flowed to the sparger. The following is a summary of observations directly related to the ADS package performance: The tests provided thermal-hydraulic performance data for the simulated ADS flow path over a wide range of quasi-steady-state flow rates, including: Single-phase steam flow at flow rate from [ ]'A' Two-phase flow at flow rates from [ ]*** at h ADS package inlet 'Ihe tests closely matched the anticipated AP600 ADS operating envelope flow rates and fluid qualities. Total overlap of the tests with intended flow rates and fluid qualities was not possible due to facility limitations. Choked flow occurred at more than one point in the ADS flow path simultaneously and = included: At the ADS stage 1 globe valve (when stages 2 and 3 are closed) and at the sparger At the sparger arm inlet from the sparger body and at the sparger arm holes i Choked flow was observed in the ADS package when the stage 2 or 3 were open with or without stage 1 open. i Sparger operation with both single-phase steam and two-phase fluid was stable and the resultant pressure pulses measured in the quench tank appear to be within the expected magnitudes. u Aap60thnonpop\\l776w-3toon:1t>042295 5-1 i

r L The sparger arm geometry created strong mixing currents in the quench tank during the blowdowns when the quench tank water was subcooled. Ilowever, complete mixing to the bottom of the quench tank did not occur, as evidenced by the quench tank water temperature measurements. Blowdowns into the fully heated quench tank expelled a significant amount of water from the quench tank The pressure pulses measured in the quench tank when the water was fully heated were significantly reduced, as compared to blowdowns into cold water. Air cleaning loads, even at the fast blowdown initiation rates in this test, were not dominant. No significant pressure oscillations were observed, although negative pressures occurred in the sparger and discharge line when flow was quickly terminated and backflooding of the sparger occurred. I l 1 l i i a:W4agey\\1776w 3f non:ll*042295 52

O..;._.

6.0 REFERENCES

' 1. ' AP600 Automatic Depressurization System Phase A Test Data Report, WCAP-13891 Rev. 0, May 1994. l - 2.- Brockie, A.J., Automatic Depressurization System Test Specification, PXS-T1-P004,. l - WCAP-14112, Rev.1 (Proprietary), February 1995. 3. Meyer, P.K., NOTRUMP A Nodal Transient Small Break and General Network Code, k WCAP-10079-P-A, August 1985. l 4. ' V. V. Miselis, A. J. Brockie, and J. S. Nitkiewicz, facility Description Report AP600 'j Automatic Depressurization System Phase B1 Tests, RCS-T3R-001, WCAP-14303.(Proprietary),- l March 1995. 5. Test Proceduresfor AP600 System Verification Experimental Activity on V.A.P.O.R.E. Plant (APEX-SV), ENEA Doc. ElHE 94023 Rev.1. i 6. Brockie, A.J., Quality Assurance Plan

Description:

AP600 Test Program Conducted at the VAPORE Plant in ENEA, RCS-TlH-001, Rev.1, AP600-GQ9402, November 1994. I i f l a:Waprop\\l776w-3t.non:1b-04:295 6-1 , _..... - ~ _ -}}

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