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ALTAS (Advance Thermal-Hydraulic Test Loop For Accident Simulation)

Author
kaeri
Date
2019-04-29 09:33
Views
842
Details
Legal Name of Facility Advance Thermal-Hydraulic Test Loop For Accident Simulation
Abbreviated Name ATLAS
Facility Type Integral Effect Test Facility
Reactor Design Reference APR1400; OPR1000
Application Nuclear Safety; Thermal Hydraulics
Current Purpose - Support to resolve safety issues and concerns of LWRs

- Simulation of transients/accidents of LWRs for assessment and validation of system-scale safety analysis codes

- Confirmation of design concept and operational performance of new safety systems
Short Description ATLAS has the same two-loop features as APR1400 and is designed according to the scaling method to simulate the various test scenarios as realistically as possible. It is a half-height and 1/288-volume scaled test facility with respect to APR1400. The fluid system of ATLAS consists of a primary system, a secondary system, a safety injection system, a break simulating system, a containment simulating system, and auxiliary systems. The primary system includes a reactor pressure vessel, two hot legs, four cold legs, a pressurizer, four reactor coolant pumps, and two steam generators. The secondary system of ATLAS is simplified to be of a circulating loop-type. Most of the safety injection features of APR1400 and OPR1000 are incorporated into the safety injection system of ATLAS. In the ATLAS test facility, about 1600 instrumentation are installed to precisely investigate the thermal-hydraulic behavior in simulation of the various test scenarios.
Status Operational
Operating Organization Korea Atomic Energy Research Institute – Thermal Hydraulics and Severe Accident Research Division (KAERI - THSARD)
Operating Organization URL http://www.kaeri.re.krhttp://www.thsard.re.kr
Homepage http://www.thsard.re.kr/atlas
Country Republic of Korea
Keywords ATLAS, APR1400, OPR100, IET
Local language Legal Name of Facility 신형경수로, 한국표준형원전, 종합효과실험




DB-List
Test Test ID Break Size Break Location Bypass Flow Path SI Injection Test condition Remark
APR1400 (%/inch) ATLAS

(mm)
DC-UH DC-HL
LBLOCA Test Conditions LB-CL-01 100% / 30 53.4 CL Bottom close close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

Manual operation
LB-CL-02 100% / 30 53.4 CL Bottom close close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

Automatic operation
LB-CL-03 100% / 30 53.4 CL Bottom close close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

Valve opening tuning
LB-CL-04 100% / 30 53.4 CL Bottom close close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

Valve opening tuning
LB-CL-05 100% / 30 53.4 CL Bottom open close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

(Late Reflood Test)
SET - Downcomer boiling
LB-CL-06 100% / 30 53.4 CL Bottom open close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

Higher wall temp.
LB-CL-07 100% / 30 53.4 CL Bottom open close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 1 Test

(Repetition of LB-CL-05)
LB-CL-08 100% / 30 53.4 CL Bottom close close SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(Manual + Automatic)
LB-CL-09 100% / 30 53.4 CL Bottom open open SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(ANS73*120%; 0.1MPa)
IET - Conservative

Condition
LB-CL-10 100% / 30 53.4 CL Bottom open open SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(ANS73*102%; 0.2MPa)
LB-CL-11 100% / 30 53.4 CL Bottom open open SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(ANS79*102%; 0.2MPa)
IET - Best-estimate Condition #1
LB-CL-12 100% / 30 53.4 CL Bottom open open SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(radial profile)
LB-CL-13 100% / 30 53.4 CL Bottom open open SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(Fail due to heater trip)
LB-CL-14 100% / 30 53.4 CL Bottom open open SIP-1& 3

SIT-1, 2, 3 & 4
Phase 2 Test

(ANS79*102%; 0.2MPa)
IET - Best-estimate Condition #2 (radial profile)
LB-CL-15 100% / 30 53.4 CL Bottom open open SIP-1, 2, 3 & 4 Separate Effect Test SET - Low reflooding rate condition
DVI SBLOCA Test Conditions SB-DVI-01 100% / 8.5 15.13 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Delayed Rx. trip applied

Core protection activated
SB-DVI-02 100% / 8.5 15.13 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay Abnormal SIP actuation
SB-DVI-03 100% / 8.5 15.13 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay with additional 8 sec delay

Switch from MV#1 to MV#2
Conservative condition
SB-DVI-04 25% / 4.24 7.63 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay

Connection to MV#2 only
logged only by HMI (DAS fail)
SB-DVI-05 25% / 4.24 7.63 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay

Connection to MV#2 only
Repeatability of SB-DVI-04
SB-DVI-06 5% / 1.9 3.41 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay

Connection to MV#2 only
SB-DVI-07 50% / 6.0 10.8 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay

Upper tee to both MV#1,2
SB-DVI-08 100% / 8.5 15.13 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay

Connection to MV#2 only changed to cone-type
SIT Q-meters changed to corioris-type
SB-DVI-09 50% / 6.0 10.8 DVI-4 Bottom open open SIP-2, SIT-1,2,3 Const. power and decay

Bottom tee to both MV#1,2
ISP-50 test
CL SBLOCA Test Conditions SB-CL-01 1.78% / 4 7.12 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay
SB-CL-02 4.0% / 6 10.68 CL Bottom close close SIP-1, 3 & 4 SITs Const. power and decay SPACE
SB-CL-03 7.11% / 8 14.24 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay
SB-CL-04 8.03% / 8.5 15.13 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay
SB-CL-05 1.78% / 4 7.12 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay
SB-CL-06 4.0% / 6 10.68 CL Bottom open open SIP-2 & SIT-1,2,3 Const. power and decay CPT for SB-DVI-09
SB-CL-07 0.44% / 2 3.56 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay No Loop Seal Clearing
SB-POSRV-01 2 POSRV / 3.5 6.23 PZR Top open open SIP-1, 3 Const. power and decay SPACE
SB-POSRV-02 1 POSRV / 2.3 4.09 PZR Top close close SIP-1, 3 Const. power and decay SPACE
SB-CL-08 4.0% / 6 10.68 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay

Cold Leg Injection
SB-CL-09 4.0% / 6 10.68 CL Bottom open open SIP-1, 3 & 4 SITs Const. power and decay
SB-CL-10 5.0% (LSTF) 12.7 CL Bottom open open 4 SITs (CLI) Const. power and decay

Cold Leg Injection
CPT for LSTF SB-CL-18 test
SGTR Test Conditions SGTR-HL-01 1 EA / 0.67 None / 1.756 x 66.5 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.8m

Rx trip by HSGL
Mistake in scaling analysis
SGTR-HL-02 5 EA / 3.35 3.76 / 4.57 x 352 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by HSGL
Mistake in scaling analysis
SGTR-HL-03 1 EA / 0.67 1.68 / 1.756 x 834 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by HSGL
Mistake in scaling analysis
SGTR-HL-04 1 EA / 0.67 1.68 / 1.756 x 447 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by HSGL
SPACE
SGTR-HL-05 5 EA / 3.35 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by HSGL
SPACE
SGTR-HL-06 1 EA / 0.67 1.68 / 2m Hot side 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by LPP
SGTR-HL-07 5 EA / 3.35 2m

Hot side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by LPP
SGTR-CL-01 1 EA / 0.67 1.68 / 1.756 x 447 2m

Cold side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by HSGL
SGTR-CL-02 5 EA / 3.35 2m

Cold side
0.5 1.4 SIP-1, 3 Initial level of SG: 5.0m

Rx trip by HSGL
PAFS-SGTR-01 1 EA / 0.67 at HL 1.68 / 1.756 x 447 2m

Hot side
0.5 1.4 SIP-1, 3 APR+ power condition PAFS

Break flow error
PAFS-SGTR-01R 1 EA / 0.67 at HL 1.68 / 1.756 x 447 2m

Hot side
0.5 1.4 SIP-1, 3 APR+ power condition
FLB Test Conditions FLB-EC-01C 0.4 15.24 Economizer open open Not actuated HPP compulsory trip

Level: PZR-55%, SG-60%WR
Mistake in Aux. FW injection
FLB-EC-02 0.1 7.62 Economizer open open SIP-1, 3 HPP compulsory trip

Level: PZR-55%, SG-60%WR
Mistake in Aux. FW injection
FLB-EC-03 0.86 22.29 Economizer open open Not actuated HPP compulsory trip

Level: PZR-55%, SG-60%WR
OV-MSSV2-01 not actuated
FLB-EC-03R 0.86 22.29 Economizer open open Not actuated HPP compulsory trip

Level: PZR-55%, SG-60%WR
Max. break size of ATLAS
FLB-EC-04 0.4 15.24 Economizer open open Not actuated Rx trip by LSGP

Level: PZR-55%, SG-60%WR
LSGP trip effect
FLB-DC-01 0.18 10.23 Down-comer open open SIP-1, 3 HPP compulsory trip

Level: PZR-55%, SG-60%WR
Break Location
FLB-DC-01R 0.18 10.23 Down-comer open open SIP-1, 3 HPP compulsory trip

Level: PZR-55%, SG-60%WR
Break Location
FLB-EC-01R 0.4 15.24 Economizer open open Not actuated HPP compulsory trip

Level: PZR-55%, SG-60%WR
100% power
FLB-EC-05 0.4 15.24 Economizer open open Not actuated HPP

SG level: 0.8m, SG P: 6.9MPa

Aux. set point shifting
SS at reduced SG inventory

(SPACE)
FLB-DC-02 0.18 10.23 Down-comer open open SIP-1, 3 HPP

SG level: 0.8m, SG P: 6.9MPa

Aux. set point shifting
SS at reduced SG inventory
FLB-EC-06 0.4 15.24 Economizer open open SIP-1, 3 HPP, RCP100% 8% power

Level: PZR-55%, SG-60%WR
8% power

(SPACE)
PAFS-FLB-EC-01 0.3 12.34 Economizer open open SIP-1, 3 8% power of APR+

LSGP trip

Level: PZR-55%, SG-60%WR PAFS supply to SG2
PAFS operation
SLB Test Conditions SLB-GB-01 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 100 % Power   with LOOP

-   AF to SG1 by LSGL

-   FR: choking area 38.6mm
-    RCP: 8%

-    Trip: LSGP

-    (SPACE)
SLB-GB-02 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 8 % Power    /w/o LOOP

-   AF to SG1 by LSGL

-   FR: choking area 38.6mm
-    RCP: 100%

-    Trip: LSGP

-    (SPACE)

-    Too small decay curve
SLB-GB-03 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      with LOOP

-   AF to SG1 by LSGL

-   FR: choking area 38.6mm
-    RCP: 100%

-    Trip: LSGP

-    Too small decay curve
SLB-PB-01 20% of MSL area 22.28 Main steam line open open SIP-1, 3 -   APR1400 100 % Power   with LOOP

-   AF to SG1 by LSGL

-   FR: non-choking area 45.9mm
-    RCP: 8%

-    Trip: LSGP
SLB-PB-02 20% of MSL area 22.28 Main steam line open open SIP-1, 3 -   APR1400 8 % Power    /w/o LOOP
-   AF to SG1 by LSGL

-   FR: non-choking area 45.9mm
-    RCP: 100%
-    Trip: LSGP

-    Too small decay curve
SLB-PB-03 20% of MSL area 22.28 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      with LOOP
-   AF to SG1 by LSGL

-   FR: non-choking area 45.9mm
-    RCP: 100%
-    Trip: LSGP

-    Too small decay curve
SLB-PB-03R 20% of MSL area 22.28 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      with LOOP

-   AF to SG1 by LSGL

-   FR: non-choking area 45.9mm
-    RCP: 100%

-    SG: P=7.3MPa, L=77%

-    PZR L=31.05%

-    HL=293.9oC, CL=291.2oC

-    Trip: LSGP

-    ANS decay curve
SLB-PB-02S 20% of MSL area 22.28 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      /w/o LOOP

-   AF to SG1 by LSGL

-   FR: non-choking area 45.9mm
-    “
SLB-GB-02R 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      /w/o LOOP

-   AF to SG1 by LSGL

-   FR: choking area 38.6mm
-    “
SLB-GB-03R 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      /w/o LOOP

-   AF only to intact SG by LSGL, AF to broken SG is disabled

-   FR: choking area 38.6mm
-    Aux FW only to intact SG
SLB-PAFS-01 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR+ 100% power

-   PAFS to intact SG
-    100% power of APR+

-    (PAFS)
SLB-GB-02S 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      /w/o LOOP

-   AF to SG1 by LSGL

-   FR: choking area 38.6mm
-    Fail

-    RCP 50%, OV-MS12-01 early closing
SLB-GB-02T 100% FR area

(60% of MSL area)
38.6 Main steam line open open SIP-1, 3 -   APR1400 8 % Power      /w/o LOOP

-   AF to SG1 by LSGL

-   FR: choking area 38.6mm
-    Repeatability test
SBO Test Conditions SBO-01 open open no -   SBO at time zero

-   Rx trip at time zero
-    Small leakage thru OV-MS12-01
SBO-01R open open no -   SBO at time zero

-   Rx trip at time zero
-    Repeat
SBO-02 open open no -   SBO at time zero

-   Turbine driven Aux to 2 SG
-
SBO-03 open open no -   SBO at time zero

-   Turbine driven Aux to SG2 only
-    asymmetric
SBO-04 Loop seal bottom open open no -   SBO at time zero

-   RCP seal failure; 10gpm

-   Turbine driven Aux to 2 SG
-
SBO-05 0.75 Loop seal bottom open open no -   SBO at time zero

-   RCP seal failure; 100gpm

-   Turbine driven Aux to 2 SG
-
SBO-06 1.665 Loop seal bottom open open no -   SBO at time zero

-   RCP seal failure; 500gpm

-   Turbine driven Aux to 2 SG
-    TDAFW was not activated
SBO-SGTR1 1.68 Hot side open open no -   SBO at time zero

-   SGTR at time zero

-   TDAFW at two SGs
-    Small break flow results in TDAFW in two SGs
SBO-SGTR2 5*1.68 Hot side open open -   SBO at time zero

-   MSGTR at time zero

-   TDAFW at two SG
-
PAFS-SBO-01 open open -   SBO at time zero

-   PAFS actuation to SG2 at 25% WR
SBO-SGTR-P1 SG1 Hot side open open SBO / SGTR (5 tube) after core water depletion

AFW on SG2 as AM

PZR connected to HL1
PZR surge line was orificed by improper flange (12mm)
SBO-SGTR-P2 SG1 Hot side open open SBO / SGTR (5 tube) after core water depletion

AFW on SG2 as AM

PZR connected to HL1
Loss of RHR during Mid-Loop Operation PRO-01 open open no -   Power: 173 kW (0.88%)

-   PZR man-way open

-   Loss of RHR at time zero
PRO-02 open open no -   Power: 91 kW (0.46%)

-   PZR man-way open

-   SG 2nd Not available

-   Loss of RHR at time zero
RPV break LOCA SB-ICI-01 open open no -   ICI nozzle break, 25% CLB equivalent -    Fail to open OV-MSSV3-01

-    Fail in HPSI3-01 flow rate
SB-CEDM-01 open open Yes -   CEDM nozzle break (2 nozzles) -
IBLOCA IB-PZR-01 open open yes -   10” PZR surge line break -
IB-PZR-02 open open yes -   10” PZR surge line break -    repeat
LBLOCA Test Conditions LB-SI-01 100% / 30 53.4 CL Bottom open open SIP-1,2 & 3

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
3 SIP injections,

Ref: LB-CL-09
LB-SI-02 100% / 30 53.4 CL Bottom open open SIP-1, 3 & 4

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
3 SIP injections,

Ref: LB-CL-09
LB-SI-03 100% / 30 53.4 CL Bottom open open SIP-2, 3 & 4

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
3 SIP injections,

Ref: LB-CL-09
LB-SI-01R 100% / 30 53.4 CL Bottom open open SIP-1,2 & 3

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
3 SIP injections,

Ref: LB-CL-09
LB-SI-04 100% / 30 53.4 CL Bottom open open SIP-1 & 3

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
Ref: LB-CL-09
LB-SI-05 100% / 30 53.4 CL Bottom open close SIP-1, 2 & 3

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
Nitrogen injection
LB-SI-05R 100% / 30 53.4 CL Bottom open open SIP-1,2 & 3

SIT-1, 2, 3 & 4
Conservative conditions

(ANS73*120%; 0.1MPa)
Nitrogen injection
DOOSAN Test Conditions SLB-DS-01 - - Steam nozzle open open - SLB at 8% power condition Double rupture disk
SLB-DS-02 - - Steam nozzle open open - repeat
SLB-DSTR-01 open open Transient test for SG behavior Temp. & pressure ramp change
SLB-DSTR-02 open open repeat
SLB-DSBD-01 0.2%/1%/5% of the MSR 0.48/1.07/2.40 SG Blowdown drain hole (hot, cold side both) open open No SG inventory blowdown  Hot side, cold side and standby (0%) condition
SLB-DSBD-02 0.2%/1%/5% of the MSR 0.48/1.07/2.40 SG Blowdown drain hole (hot, cold side both) open open No SG inventory blowdown Repeat, remove the control valve
OECD-ATLAS Test Conditions A1.1 - - - open open - SBO+AFS

Open test during 2nd PRG/MB
PZR heater power oscillates
A1.1R - - - open open - PZR heater: 18kW fixed turn off at first opening of POSRV
A1.2 open open SBO+PAFS Asymmetric secondary cooling by PAFS (SG2)
A5.1-S3 1% CL Break(for LSTF) 5.41 CL1A(Horizontally mounted) open open no CT to SB-CL-32, 1% CL break w/o HPSI & 2nd depressurization Benchmark exercise
A2.2R2 SG1 Hot side open open SBO / SGTR (1 tube) after core water depletion

AFW on SG2 as AM

PZR connected to HL1
PZR surge line was orificed by improper flange (12mm)
A2.2R2 open open SGO+SGTR (5tube) The surge line piping should be 1-1/4”
A2.2R3 SG1 Hot side open open SBO / SGTR (1 tube) after core water depletion

AFW on SG2 as AM

PZR connected to HL1
Official data for A2.2
A3.1M1 open open TLOFW+AM TLOFW with AM
A1.2M1 open open SBO+PAFS Repeat test to correctly measure loop flow rate
A3.1M2 open open TLOFW+AM Repeat test to correctly measure loop flow rate
A2.1 Seal Failure 1.1 2 RCPs’ Seal Leakage open open NA SBO+RCP seal failure With PAFS
A4.1S1 21.6 CL1A top open open CLI to 2A,2B 17% CL IBLOCA (LSTF Counterpart Test)

Single failure of HPI & LPI
1:1 Heat flux to LSTF
A4.1S2 21.6 CL1A top open open CLI to 2A,2B 17% CL IBLOCA (LSTF Counterpart Test)

Single failure of HPI & LPI
1.4:1 Heat flux to LSTF
A4.1S3 21.6 CL1A top open open CLI to 2A,2B 17% CL IBLOCA (LSTF Counterpart Test)

Single failure of HPI & LPI
1.4:1 Heat flux to LSTF

Repeatability test for S2
A5.2S1 19.0 CL1A top open open CLI to 2A,2B 13% CL IBLOCA (LSTF Counterpart Test)

Full injection of HPI & LPI
1.4:1 Heat flux to LSTF
TLOFW TLOFW-01 - - - open open - Stuck open of POSRV for primary depressurization Secondary isolation
TLOFW-02 - - - open open - Secondary bleeding (opening MSSV) then primary bleeding (POSRV open) Secondary bleeding

1. ADV open (3.62mm) then

2. MSSV open (1-1/4”)
Top Slot break IBLOCA with Loop Seal Reformation LTC-CL-01 4” 7.12 CL(A1) 100% open 100% open 4 SIPs + 4 SITs- 52 ℃ SI water 1. No loop seal reformation

2. No PCT
LTC-CL-02 4.5” 8.01 CL(A1) 100% open 100% open 4 SIPs + 4 SITs- 20 ℃ SI water 1. No loop seal reformation

2. No PCT
LTC-CL-03 3.5” 6.23 CL(A1) 100% open 100% open 4 SIPs + 4 SITs- 13 ℃ SI water 1. Loop seal clearing/reformation : 1 times

2. No PCT
LTC-CT-04R 4” 7.12 CL(A1) close close 4 SIPs + 4 SITs- 16 ℃ SI water 1. Loop seal clearing/reformation : 4 times

2. No PCT
Loss of RHR during Shut-down Cooling Operation (Effectiveness of Reflux Condensation) ML-01 - - - open open no Initial primary gas : air

0.1MPa, 129kW

PZR SDS open

Initial primary water level : mid of hot-leg
Core uncovery / PCT
ML-02 - - - open open no Initial primary gas : air

0.1MPa, 83kW, PZR SDS open

Initial primary water level : mid of hot-leg
Core uncovery / PCT
ML-03 - - - open open no Initial primary gas : steam

2.74MPa, 361kW

Initial primary water level : mid of hot-leg
SG 2nd dry-out,

Loop seal clearing + reformation

PCT
ML-03R - - - open open no Initial primary gas : steam

2.72MPa, 355kW

Initial primary water level : mid of hot-leg
SG 2nd dry-out,

Loop seal clearing + reformation

PCT
Design Extension Conditions SLB-SGTR-02 5 EA / 3.35 1.68 X 5ea holes (for chocking)

1.756 X 447

X 5 nozzles

(for non-chocking)
Main steam line

+

2m Hot-side SG Tube
open open 4 SIPs

No SITs
- SLB with LSGP Trip

- Aux into only SG-1

- SGTR with SG-1 Dryout
SLB-SIP-02 100% FR area

(60% of MSL area)
38.6 Main steam line open open No -   APR1400 8 % Power      /w/o LOOP

-   SLB by LSGP Trip

-   AF to SGs by LSGL

-   Total failure of SIPs
SGTR-SIP-01 5 EA 1.68 X 5ea holes (for chocking)

1.756 X 447

X 5 nozzles

(for non-chocking)
2m Hot-side SG Tube open open No - HSGL Trip after SGTR Initiation

- AF to SGs

- Total failure of SIPs
SB-SIP-02 2” 3.56 Cold leg-1A bottom break open open No SIPs

4 SITs
-   Accident management: Opening of atmospheric dump valves (ADVs)
Natural Circulation Tests NC-01R N/A N/A N/A Close Close N/A - 5.4% core power

- 1st loop : initially nominal condition

- 2nd loop : nominal condition

- RCP : free rotor
Before RPV modification (2017)
NC-02 N/A N/A N/A Close Close N/A - 2.3% core power

- 1st loop : initially nominal condition

- 2nd loop : nominal condition

- RCP : free rotor
Before RPV modification (2017)
NC-03R N/A N/A N/A Close Close N/A - 5.4% core power

- 1st loop : initially nominal condition

- 2nd loop : nominal condition

- RCP : free rotor
After RPV modification (2017)
NC-04R N/A N/A N/A Close Close N/A - 2.3% core power

- 1st loop : initially nominal condition

- 2nd loop : nominal condition

- RCP : free rotor
After RPV modification (2017)
Core Partial Blockage Tests HLB-BLK-01 31.75 Hot leg-1

bottom
close close 2 SIPs (1, 3)

No SIT
- Long term cooling phase for hot leg LBLOCA

- Partial blockage at flow skirt

- Blockage ratio 0 ~ 93.2%
No effect by blockage
H-SIT & PECCS Tests HEMS-SBO-01 NA NA NA NA NA Passive

H-SIT
-    Station Blackout  accident

-    1 PAFS failure condition

-    Initial Exp. condition : First POSRV open
Evaluation of H-SIT cooling performance
PECCS-SBLOCA-01 2 in 3.49 mm CL 1A NA NA Passive

H-SIT & SIT
-    H-SIT operating condition : 10 MPa

-    M-SIT operating condition : 4.21 MPa / N2  gas

-    RV depressurization by using ADV #1~ #4
2 H-SIT and 2 M-SIT
DSP-05 Tests SGTR-PAFS-02 5 EA 1.68 X 5ea holes (for chocking)

1.756 X 447

X 5 nozzles

(for non-chocking)
2m Hot-side SG Tube open open SIP-1 & -3

4 SITs
- HSGL Trip after SGTR Initiation

- PASF to SG-2 only

- Single failure criterion
OECD-ATLAS2 Tests B3.1 Run1 10 inch 18.0 PZR surgeline open open 2 SIPs

4 SITs
- 10” PZR surge line break

- SIP flow constant
B3.1 Run2 10 inch 18.0 PZR surgeline open open 2 SIPs

3 SITs
- 10” PZR surge line break

- SIP flow constant

- SIT-2 not used
B2.1 NR NR NR open open No SIPs

4 H-SITs
- SBO + H-SIT injection
B5.1 1% CL for LSTF 5.41 RPV Upper-head open open 4SIP,

4ACC

(CL Injection)
- CT to SB-PV-05(LSTF)

- 1% CL break

- 2nd depressurization

- Nitrogen injection
Benchmark exercise
B3.2 8.5 inch 15.13 DVI-3 open open 1 SIP

3 SITs
100% DVI break



Related Documents or Photo Files
File Name (Click to download) Description
File1.pdf Introduction to ATLAS test facility
File2.jpg Facility photo