ML20092A731

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Panthers-PCC Data Analysis Rept
ML20092A731
Person / Time
Site: 05200004
Issue date: 06/22/1995
From: Silverii R
ITALY, GOVT. OF
To:
Shared Package
ML20092A496 List:
References
NUDOCS 9509110168
Download: ML20092A731 (25)
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Text

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SIET S.p.A. Eis's'ue'$yIE:

SocietA Informazioni ESpezienZe Termoidrauliche SEZIONE REATTORIINNOVATIVI j Piacenn-Milano (ITALY)

CLIENTE: ENEA COMMESSA: ENSCO3 DISCO: PAGINA: DI:

client: Job N': disk: / page: 1 of: 4 IDENTIFICATIVO: CL. ris.: ALLEGATI:

00394 RA 95 class: / enclosure * /

document N*:

TrrOLO: PANTHERS-PCC DATA ANALYSIS REPORT utle:

REDATTORI: R. SILVERII prepared by:

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20/6/1995 EMISSIONE R LVE 1 G.CATTADORI O

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REV.: DATA: DESCRIZIONE: REDAZIONE: APPROVAZIONE: AITTORIZZAZIONE:

rev.: date: description: prepared by: approved by: authoriza: ion:

Informazioni strettamente riservate di propnetA SIET S p. A. Da non unlizzare per scopi diversi da quelli per cui sono state fornite.

Confidendal information property of SIET S pA Not be used for any purpose other then for u hich it is supplied.

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00394RA95 0 Sezione Reanori innovat:vt UST OF CONTENTS

1. INTRODUCTION
2. OBJECTIVES 2.1 General Objectives 2.2 Specific Objectives
3. TEST ANALYSIS 3.1 Steady-State Tests 3.1.1 Saturated Steam Tests (Group P1) 3.1.1.1 Test Conditions 3.1.2 Superheated Steam Tests (Group P2) 3.1.2.1 Test Conditions 3.1.3 Saturated Steam Air Tests at 5 kg/s Steam Flowrate (Group P3) 3.1.3.1 Test Conditions 3.1.4 Saturated Steam-Air Tests at Extreme and intermediate Ranges (Group P4) 3.1.4.1 Test Conditions 3.1.5 Superheated Steam Air Tests (Group P5) 3.1.51 Test Conditions 3.1.6 Low Prianty Saturated Steam Air Tests (Group P6) 3.1.6.1 Test Cond:tions 3.2 Transient Tests 3.2.1 Noncondensable Gas Buildup Tests (GroupP7)

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  • Sezione Reanori innovatwi 3.2.1.1 Test Conditions 3.2.2 Pool Water Level Effect Test (Group PS) 3.2.2.1 Test Conditions REFERENCES I

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1 LIST OF TABLES t l

Table 3.1 - PANTHERS-PCC Steady-State Performance Matrix, Saturated Steam Only Tests Table 3.2 - PANTHERS-PCC Steady-State Performance Matrix. Superheated Steam Only Tests Table 3.3 - Superheating in the PCC Steam Feed Line Table 3.4 - PANTHERS-PCC Steady-State Performance Matrix. Saturated Steam - Air Mixture Tests Table 3.5 - PANTHERS-PCC Steady-State Performance Matrix.

Saturated Steam Air Mixture Tests. Extreme and Intermediate Ranges' i

Table 3.6 - PANTHERS PCC Steady-State Performance Matrix. Superheated Steam Air Tests Table 3.7 - PANTHERS-PCC Steady State Performance Matrix. Low Priority Saturated Steam -

Air Mixture Tests

- Table 3.8 - PANTHERS-PCC Noncondensable Gas Buildup Test Matrix Table 3.9 - Steam and Air Partial Pressure for Test T51 Tabte 3.10 - Steam and Helium Partial Pressure for Test T76 Table 3.11 - Steam and Helium Partial Pressure for Test T75 Table 3.12 - Pool Water Level Effects Test Matrix

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Secone Rea:en innovativi 00394RA95 j 0 l 7 1 INTRODUCTION As part of the Simplified Water Reactor (SBWR) design and U.S. certification. program, a prototype heat exchanger for the Passive Containment Cooling System (PCCS) was tested in Italy. A four-party effort by GE and the Italian companies ANSALDO, ENEA, and ENEL sponsors the program. The Passive Containment Condenser (PCC) was designed, and a fuil-scale prototype was manufactured by ANSALDO. The tests were conducted by SIET at the Performance Analysis and Testing of Heat Removal Systems (PANTHERS) test facility.

PANTHERS-PCC is the designation of the program applicable to the PCC prototype. These tests measure both the thermal-hydraulic and structural performance of the heat exchanger at various conditions the unit might experience during and after a postulated LOCA. The tests are part of an extensive experimental program to study the performance of passive systems for SBWR certification /1/.

PANTHERS PCC test program was conducted accordingly to PANTHERS-PCC TP&P /2/ and was completed in December 1995. The thermal hydraulic results are reported in the Thermal.

Hydraulic Data Report of PANTHERS-PCC Tests /3/.

This report contains an analysis of some main thermal-hydraulic aspects of the PCC performance emerging from PANTHERS-PCC test data.

This report toghether with the Thermal-Hydraulic Data Report, constitute the Final Thermal-Hydraulic Test Reports of PANTHERS-PCC tests.

2. OBJECTIVES 2,1 General Objectives The thermal hydraulic general objectives of the full scale PCC tests are /1/:
1) Demonstrate that the pretotype PCC heat exchanger is capable of meeting its design requirements for heat rejection. (Component Performance)
2) Provide a sufficient database to confirm the adequacy of TRACG to predict the quasi-steady-heat rejection performance of a prototype PCC heat exchanger, over a range of noncondensable gas flow rates, steam flow rates, operating pressures, and superheat conditions, that span and bound the SBWR range. (Steady State Separafe E//ects)
3) Determine and quant:fy any differences in the effects of noncondensable buildup in the PCC heat exchanger tubes between lighter-than-steam and heavier than-steam gases. (Concept Demonstration)

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2.2 Specific Objectives The thermal hydraulic specific objectives are /2/:

a) measure the steady-state heat removal capability over the expected range of SBWR

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conditions:

inlet pressure concentration of noncondensable gases PCC differential pressure pool-side bu!k average water temperature pool-side water level b) confirm that when a mixture of steam and noncondensable gases flows into the PCC, the uncondensed gases will be discharged from the vent line and the condensate will be discharged from the drain line:

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c) confirm that tube-side heat transfer and flow rates are stable and wi*hout large fluctuations; d) confirm that there is no condensation water hammer during the expected start-up, shutdown and operating modes of the PCC; e) measure the inside and outside wail temperature at typical tube locations to:

i) provide diagnostic information for investigation of unexpected condenser performance ii) provide information useful to confirm the understanding of tube side performance iii) provide a fundamental data base for confirmation of TRACG simulation of PCC performance.

The conclusions to the Thermal-Hydraulic Data Report /3/ discusses how these objectives are met.

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3. TEST ANALYSIS 3.1 Steady-State Tests

'ihe majority of tne PANTHERS-PCC testing concems steady-state performance tests. For these tests, the facility is placed in a condition where steam or air-steam mixtures are supplied to the PCC , and the condensed vapor and vented gases are collected. All inlet and outlet flows are measured.

The condensate after cooling is collected in a storage tank and the vented gas is released to the atmosphere. Once steady-state conditions are established, data are recorded for a period of at least 15 minutes. The time average data are reported and analyzed.

The tests are classified into 6 groups as defined in Section 6 of the PANTHERS-PCC Thermal-Hydraulic Data Report /3/

- 3.1.1 Saturated Steam Tests (Group P1) 3.1.1.1 Test Conditions Table 3.1 shows the PANTHERS PCC Steady-State Performance Test Matrix for Saturated-Steam Only Tests.

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3.1.2 Superheated Steam Tests (Group P2) 3.1.2.1 Test Conditions Table 3.2 shows the PANTHERS.PCC Steady-State Performance Test Matrix for Superheated-Steam Only Tests.

The tests can be divided into two sets; low steam flow (approximately 1.4 kg/s) and high steam flow (approximately 5 kg/s near PCC rated conditions). Within each set, three superheat conditions were tested (approximately 10,20 and 30 *C superheating).

3.1.3 Saturated Steam-Air Tests at 5 kg/s Steam Flowrate (Group P3) l 3.1.3.1 Test Conditions '

Table 3.4 shows the PANTHERS-PCC Steady State Performance Test Matrix for Saturated- i Steam-Air Tests at 5 kg/s Steam Flowrate.

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Sezione Reat:en innovatnn 00394RA95 0 12 l 3.1.4 Saturated Steam-Air Tests at Extreme and Intermediate Ranges (Group P4) 3.1.4.1 Test Conditions Table 3.5 shows the PANTHERS-PCC Steady-State Performance Test Matrix for Saturated-Stearn Air Tests at Extreme and intermediate Ranges.

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3.1.5 Superheated Steam-Air Tests (Group PS) 3.1.S.1 Test Conditions Table 3.6 shows the PANTHERS PCC Steady-State Performance Test Matrix for Superheated-Steam-Air Tests.

3.1.6 Low Priority Saturated Steam-Air Tests (Group P6) 3.1.6.1 Test Conditions Table 3.7 shows the PANTHERS PCC Steady State Performance Test Matrix for Low Priomy Saturated Steam-Air Tests.

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SIET Documsnt Rav Paga of S2 mons Rsatton innovttivi 00394RA95 0 14 3.2 Transient Tests Two types of thermal-hydrau!!c transient tests were performed in the PANTHERS-PCC test program:

- noncondensable gas buildup tests (8 tests)

- pool water level effect tests (3 tests)

These tests are not intended to be system transient tests. Their purpose was to measure the thermal-hydraulic and structural performance of the condenser under varying conditions.

3.2.1 Ncncondensable Gas Buildup Tests (Group P7) 3.2.1.1 Test Conditions Table 3.8 shows the PANTHERS-PCC Non Condensable Gas Buildup Tests Matrix.

Steam was supplied to the PCC at a constant rate, and steady-state conditions were established and held for a ten minutes period. Then air, helium or air / helium mixture were injected at low flowrate with the vent line closed. These tests can be divided in two groups: TSO, T52, T75, T77 (at 1.4 kg/s steam flowrate) and T51, T53, T76, T78 (at 5 kg/s steam flowrate). In each group the first two tests are with air buildup (saturated steam and superheated steam), the third test is

SIET Documsnt Rev Paga of Sezione Rea: ton innovatvi 00394RA95 0 15 saturated steam with helium buildup and the fourth test is saturated steam with air / helium mixture buildup.

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32.2 Pool Water Level Effect Test (Group PB) 32.2.1 Test Conditions Table 3.12 shows the PANTHERS-PCC Pool Water Level Effect Tests matrix. Three tests were run. Test T54 was run with steam only and with the vent line closed. Tests T55 and T56 were run with a steam-air mixture, the vent line open and the position of the vent tank flow control valve remained fixed. Tests were started wnh the pool at normal water level.

Once steady-state conditions were established and held for at least ten minutes, the pool water level was allowed to drop by boiloff and draining till the IC pool water level reached 1.3 m. Then the water level was increased till normal water level was re-established.

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Sezione Reatten innova:m 00394RA95 0 19 REFERENCES

/1/ GE Nuclear Energy NEDC-32391 rev.B *SBWR Test and Analysis Program Descriptior."

/2/ PANTHERS-PCC TP & P, SIET 0009BPP91

/3/ THERMAL-HYDRAULIC DATA REPORT OF PANTHERS-PCC TESTS, SIET 00393RP95 i

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, Sszions Reat:on innovatwi 00394RA95 l 0 20 l 1 Table 3.1 - PANTHERS-PCC Steady-State Performance Matrix - Saturated Steam Only Tests Test Test Condition Group Number Steam Flow

  • Air Flow
  • Superheat Number [kg/s (1b/s)] [kg/s (Ib/s)] [*C (*F)]

P1 37 0.45(1.0) 0 (0) < 10 (18)

P1 38 1.4 (3.0) 0 (0) < 10 (18)

P1 39 2.5 (5.5) 0 (0) < 10 (18)

P1 40 3.6 (8.0) 0 (0) < 10 (18)

P1 41 5.0 (11.0) 0 (0) < 10 (18)

P1 42 5.7 (12.5) 0 (0) < 10 (18)

P1 43 6.6 (14.5) 0 (0)

< 10 (18)

Nominal value Table 3.2 - PANTHERS-PCC Steady-State Performance Matrix - Superheated Steam Only Tests Test Test Group Condition Steam Flow

  • Air Flow
  • Superheat Number Number [kg/s (Ib/s)] [kg/s (Ib/s)] [*C (*F)]

P2 44 1.4 (3.0) 0 (0) 15 (27)*

P2 45 1.4 (3.0) 0 (0) 20 (36)*

P2 46 1.4 (3.0) 0 (0) 30 (54)*

P2 47 5.0 (11.0) 0 (0) 15 (27)*  !

P2 48 5.0 (11.0) 0 (0) 20 (36)*

P2 49 5.0 (11.0) 0 (0) 30 (54)*

Nominal value l

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Table 3.3 - Superheating in the PCC steam feed line Test Superheating at PCC Superheating below Number inlet section (*C) PCC steam distributor (*C)

T44 15.8 0.0 T45 20.7 0.4 T46 30.2 1.0 T47 14.8 0.0 T4B 18.9 0.8 T49 28.4 13.2 Table 3.4 - PANTHERS-PCC Steady-State Performance Matrix . Saturated Steam - Air Mixture Tests Test Test Steam Air Group Condition Flow

  • Flow
  • Superheat" Number Number (kg/s (ib/s)] (kg/s (Ib/s)) (*C (*F)]

P3 9 5.0 (11.0) 0.076 (0.17) < 10 (18)

P3 15 5.0 (11.0) 0.16 (0.35) < 10 (18)

P3 18 5.0 (11.0) 0.41 (0.90) < 10 (18)

P3 23 5.0 (11.0) 0.86 (1.9) < 10 (18)

Nominal value

    • Superheat conditions are relative to the steam par:ial pressure.

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Table 3.5 - PANTHERS-PCC Steady-State Performance Matrix. Saturated Steam - Air Mixture Tests.

Extreme and Intermediate Ranges Test Test Steam Air Group Condition Flow

  • Flow
  • Superheat**

Number Number [kg/s (Ib/s)] [kg/s (Ib/s)] (*C (*F)]

P4 2 1.4 (3.0) 0.014 (0.030) < 10 (18)

P4 13 2.5 (5.5) 0.16 (0.35) < 10 (18)

P4 16 6.6 (14.5) 0.16 (0.35) < 10 (18)

P4 17 2.5 (5.5) 0.41 (0.90) < 10 (18)

P4 19 5.7 (12.5) 0.41 (0.90) < 10 (18)

P4 22 1.4 (3.0) 0.86 (1.9) < 10 (18)

P4 25 6.6 (14.5) 0.86 (1.9) < 10 (18)

  • Nominal value
    • Superheat conditions are relative to the steam partial pressure.

Table 3.6 - PANTHERS-PCC Steady-State Performance Matrix. Superheated Steam - Air Mixture Tests Test Test Steam Air Group Condition Flow

  • Flow
  • Superheat**

Number Number (kg/s (Ib/s)] [kg/s (Ib/s)] (*C (*F)]

P5 35 5.0 (11.0) 0.86 (1.9) 20(36)*

P5 36 5.0 (11.0) 0.86 (1.9) 30(54)*

Nominal value

    • Superheat conditions are relative to the steam partial pressure.

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. Sezione Reation innovauvi 00394RA95 0 23 l Table 3.7 - PANTHERS-PCC Steady-State Performance Matrix. Low Priority Saturated Steam - Air Mixture Tests Test Test Steam Air Group Condition Flow

  • Flow
  • Superheat**

Number Number (kg/s (Ib/s)] [kg/s (Ib/s)] (*C (*F)]

PS 1 0.45(1,0) 0.014 (0.030) < 10 (18)

P6 3 2.5 (5.5) 0.027 (0.060) < 10 (18)

P6 4 3.6 (8.0) 0.027 (0.060) < 10 (18)

PS 5 5.0 (11.0) 0.027(0.060) < 10 (18)

PS 6 5.7 (12.5) 0.027 (0.060) < 10 (18)

P6 7 6.6 (14.5) 0.027(0.060) < 10 (18)

P6 8 1.4 (3.0) 0.076 (0.17) < 10 (18)

P6 10 5.7 (12.5) 0.076 (0.17) < 10 (18)

P6 11 6.6 (14.5) 0.076 (0.17) < 10 (18)

PS 12 0.45(1.0) 0.16 (0.35)

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< 10 (18)

PS 14 3.6 (8.0) 0.16 (0.35) < 10 (18)

P6 20 5.0 (11.0) 0.59(1.29) < 10 (18)

P6 21 6.6 (14.5) 0.59(1.29) < 10 (18)

P6 24 5.7 (12.5) 0.86 (1.9) < 10 (18)

  • Nominal value

" Superheat conditons are re!a:ive to the steam partal pressure.

Table 3.8 PANTHERS-PCC Noncondensable Gas Buildup Test Matrix Test Test Steam Helium Group Condition Flow

  • Flow
  • Air Flow
  • Superheat" Number Number (kg/s (Ib/s)] (kg/s (ib/s)] [kg/s (Ib/s)] [*C (*F)]

P7 50 1.4 (3.0) 0 (0) low < 10 (18)

P7 51 5.0 (11.0) 0 (0) low < 10 (18)

P7 52 1.4 (3.0) 0 (0) low 20 (36)*

P7 53- 5.0 (11.0) 0 (0) low 30 (54)*

P7 75 1.4 (3.0) low 0 (0) < 10 (18)

P7 76 5.0 (11.0) low 0 (0) < 10 (18)

P7 77 1.4 (3.0) low 3.4 x He < 10 (18)

P7 78 5.0 (11.0) low 3.4 x He < 10 (18)

Nominal value

" Superheat referenced to steam par 1ial pressure.

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Partial Pressure (kPa)

PCC Upper Header VENT LINE PCC Upper Header (P-A001 Location) (P-6001 Location) (P-A001 Location)

Mixture Steam Air Steam Air 347 349 0 341 6 535 346 189 527 8 700 222 478 685 15 782 169 613 766 16 Table 3.10 - Steam and Helium Partial Pressure for Test T76 (kPa)

Partial Pressure (kPa)

PCC Upper Header VENT LINE PCC Upper Header PCC Lower Header (P-A001 Location) (P4001 Location) (P A001 Location) (P-C001 Location)

Mixture Steam Helium Steam Helium Steam Helium 356 358 0 377 0 346 10 488 458 30 492 0 420 68 665 529 136 624 41 479 186 795 558 237 720 75 493 302

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(kPa)

PCC Upper Header VENT LINE Drain line PCC Upper Header PCC Upper Header (P-A001 Location) (P4001 Location) (P-5001 Location) (P-A001 Location) (P A002 Location)

Mixture Steam Helium Steam Helium Steam Helium Steam Helium 190 190 0 190 0 -- -

262 232 30 218 44 -- -

325 239 86 239 86 304 20 287 38 500 270 230 286 214 415 85 286 214 600 278 322 290 310 439 161 262 338 700 286 414 304 396 382 318 300 400 800 295 505 313 487 361 439 295 505 Table 3.12 - PANTHERS-PCC Pool Water Level Effects - Test Matrix Test Test Steam Group Condition Flow

  • Air Flow
  • Superheat" Number Number (kg/s (Ib/s)) (kg/s (Ib/s)] (*C (*F)]

PB 54 5.0 (11.0) 0 (0) < 10 (18)

P8 55 5.0 (11.0) 0.14 (0.31) < 10 (18)

P8 56 6.6 (14.5) 0.83 < 10 (18)

Nominal value

" Superheat referenced to steam partial pressure.

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