Author Affiliations
1Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin 150001, China2Nuclear and Radiation Safety Center, Beijing 100086, China3State Nuclear Power Technology R&D Center Co., Ltd., Beijing 102209, Chinashow less
Fig. 1. Schematic of break location in ACME facility
Fig. 2. RCS depressurization curves of different LOCA test condition
Fig. 3. Pressure of RCS and second side of SG
Fig. 4. Flow rate of cold leg in PRHR (a) and CMT (b) side loop
Fig. 5. Transient heat transfer power of SGs
Fig. 6. Inlet and outlet temperature of SG1 in LOCA-01 (a), SG1 in LOCA-02 (b), SG2 in LOCA-01 (c) and SG2 in LOCA-02 (d)
Fig. 7. Water level within C shape tube
Fig. 8. Outlet flow rate of PRHR
Fig. 9. Water temperature near PRHR HX within the IRWST (a) Case LOCA-01, (b) Case LOCA-02
Fig. 10. Injection flow rate of CMTs
Fig. 11. Liquid level within CMT
Fig. 12. Mixing liquid level within the core region
参数 Parameter | 数值 Value |
|---|
冷管段破口 Break in CL (LOCA-01) | PRHR管线破口 Break in PRHR pipeline (LOCA-02) |
|---|
| 衰变功率Decay heat power / MW | 3.34 | 3.12 | | 稳压器压力Pressurizer pressure / MPa | 9.08 | 9.07 | | RCS环路平均温度RCS average temperature / ℃ | 291.5 | 291.2 | 蒸汽发生器二次侧出口压力 Pressure of the secondary side of steam generator (SG) / MPa | 6.99 | 6.98 | | SG二次侧液位Feed water level of SG / m | 3.62 | 3.64 | | 安注箱液位Level of Accumulator (ACC) / m | 1 358 | 1 382 | | 堆芯补水箱水温Temperature of core makeup tank (CMT) / ℃ | 30.0 | 33.7 | | 安全壳内置换料水箱水温Temperature of IRWST / ℃ | 56.4 | 54.2 | | IRWST液位Level of IRWST / m | 3.55 | 3.55 | | 等效破口直径Equivalent break diameter / cm | 5 | 5 |
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Table 1. Initial and boundary condition for LOCA tests at ACME facility
缩写 Abbreviation | 中文全称 Full Chinese name | 缩写 Abbreviation | 中文全称 Full Chinese name |
|---|
| RX | 反应堆压力容器 Reactor pressure vessel | PRHR HX | 非能动余热排出热交换器 Passive residual heat removal heat exchanger | | CL | 冷管段 Cold leg | PRHR | 非能动余热排出 Passive residual heat removal | | HL | 热管段 Hot leg | LOCA | 失水事故 Loss of coolant accident | | SG | 蒸汽发生器 Steam generator | SBLOCA | 小破口失水事故 Small break loss of coolant accident | | CMT | 堆芯补水箱 Core makeup tank | SBO | 全厂断电事故 Station blackout accident | | ACC | 安注箱 Accumulator | PZR | 稳压器 Pressurizer | | PBL | 压力平衡管线 Pressure balance line | PXS | 非能动堆芯冷却系统 Passive core cooling system | | DVI | 直接安注管线 Direct Vessel Injection | RCS | 反应堆冷却剂系统 Reactor coolant system | | ADS | 自动降压系统 Automatic depressurization system | IRWST | 安全壳内置换料水箱 In containment refueling water storage tank |
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Table 2. The abbreviations of systems and equipments in ACME facility
| 台架设备动作 Action of facility equipment | 时间Time / s |
|---|
| LOCA-01 | LOCA-02 |
|---|
| 试验开始（S信号），主泵惰转 Test begins (S signal), Reactor pumps coastdown | 0 | 0 | | 破口阀打开 Break valve opens | 5 | 4 | | SG1、SG2蒸汽关闭 Relief valves of SG1 & SG2 closed | 2 | 5 | | CMT-1、CMT-2安注阀开启 Safety injection valves of CMT-1 & CMT-2 open | 1 | 5 | | PRHR隔离阀开启 Isolation valve of PRHR pipeline opens | 3 | 10 | | ADS1A、ADS1B开启 ADS1A and ADS1B open | 586 | 624 | | ADS2A、ADS2B开启 ADS2A and ADS2B open | 650 | 686 | | ACC1、ACC2安注阀开启 Safety injection valves of ACC-1 & ACC-2 open | 692 | 750 | | ADS3A、ADS3B开启 ADS3A and ADS3B open | 717/719 | 755/755 | | IRWST1、IRWST2安注阀开启 Safety injection valves of IRWST1 & IRWST2 open | 1 375 | 1 399 | | ADS4-1A失效，ADS4-2A开启 ADS4-1A starts failed while ADS4-2A opens | 1 374 | 1 399 | | ADS4-1B、ADS4-2B开启 ADS4-1B and ADS4-2B open | 1 409 | 1 434 | | IRWST安注开始 Safety injection of IRWST begins | 1 503/1 506 | 1 531/1 543 |
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Table 3. Chronology of major events obtained in ACME LOCA test
