Transient Analysis for Design of Primary Coolant Pump Adopted to JAERI Passive Safety Reactor JPSR.

• ARAYA Fumimasa

  Japan Atomic Energy Research Institute

• MURAO Yoshio

  Japan Atomic Energy Research Institute

• IWAMURA Takamichi

  Japan Atomic Energy Research Institute

抄録

In a course of a design study of the JAERI passive safety pressurized water reactor (JPSR), a complete loss-of-flow transient caused by a trip of all pumps was analyzed with the RETRAN code to determine an inertia of canned-motor pump utilized as the primary coolant pump and to confirm feasibility of the design condition. This transient was selected because the pump had a low inertia rotor inducing fast flow coastdown, and among the transients in which the pump had dominant effect on the departure from nucleate boiling (DNB), the analyzed transient was severest in view of the DNB occurrence. The DNB threshold was related, based on sensitivity calculations, with the coolant density reactivity coefficient and the pump inertia. From the calculations, it was concluded that the pump inertia higher than 250 kg•m² (8% of the ordinary PWRs) was necessary for preventing the DNB occurrence for the present design of JPSR, regardless of the actuation of the reactor scram. The DNB occurrence could be prevented only by the inherent nature of the reactor core which reduced the power by insertion of negative coolant density reactivity during the transient and this was one of major features of JPSR. It was shown by a rough estimation that the necessary condition could be practically realized by incorporation of a cylindrical-type flywheel.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 32 (10), 1039-1046, 1995

  一般社団法人 日本原子力学会

キーワード

• JPSR reactor
• passive safety
• design
• loss of coolant flow
• canned pump
• moment of inertia
• density reactivity
• departure from nucleate boiling
• reactor accidents
• transient analysis
• RETRAN code

詳細情報

• CRID: 1390282679072023808
• NII論文ID: 10002073439
• NII書誌ID: AA00703720
• DOI: 10.3327/jnst.32.1039
• COI: 1:CAS:528:DyaK2MXpsValsrc%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可