VERIFICATION OF A NEW METHOD FOR CALCULATING AND MEASURING GENERATOR TIME IN A SUBCRITICAL FAST REACTOR.

Experimental investigation of a new method for advanced fast reactor shutdown cooling

Thermal Engineering ◽

10.1134/s0040601517070059 ◽

2017 ◽

Vol 64 (7) ◽

pp. 496-503

Author(s):

V. V. Pakholkov ◽

A. A. Kandaurov ◽

A. I. Potseluev ◽

S. A. Rogozhkin ◽

D. A. Sergeev ◽

...

Keyword(s):

Experimental Investigation ◽

Fast Reactor ◽

New Method ◽

Reactor Shutdown

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Development of System Based Code: Part 1—Reliability Target Derivation of Structures and Components

18th International Conference on Nuclear Engineering: Volume 6 ◽

10.1115/icone18-29276 ◽

2010 ◽

Author(s):

Kenichi Kurisaka ◽

Ryodai Nakai ◽

Tai Asayama ◽

Shigeru Takaya

Keyword(s):

Fast Reactor ◽

Present Method ◽

Structural Reliability ◽

Cooling System ◽

New Method ◽

Analysis Model ◽

Energy Agency ◽

Target Value ◽

Static Failure

The present paper describes a new method for determining the target value of structural reliability in the framework of the System Based Code (SBC) by considering the safety point of view. In the new method, the reliability target is derived from the proposal to a quantitative safety goal that was published by the nuclear safety commission (NSC) of Japan and the quantitative safety design requirements on the core damage frequency (CDF) and the containment failure frequency (CFF) that were determined in the Fast Reactor Cycle Technology Development (FaCT) project by Japan Atomic Energy Agency (JAEA), by utilizing analysis models of a probabilistic safety assessment (PSA). The present method was applied to determination of the reliability target of the structures and components which constitute the reactor cooling system in the Japanese sodium-cooled fast reactor (JSFR). The risk from the reactor is expressed with sum of combination of various elements in the PSA analysis model. Those elements include not only static failure of the structures and components. However, the present study focuses on the sequences including the static failure, and the probability of dynamic failures and human errors in those sequences is conservatively assumed as a unity. It was confirmed that the present method combined with the PSA analysis model for internal initiating events is applicable to determination of the reliability target associated with a random failure of the structures and components, and that the method related to seismic initiating events can derive the target value of the occurrence frequency at which any of the important structures and components fails due to an earthquake.

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A new method for fast reactor group diffusion calculations

Bulletin de la Classe des sciences ◽

10.3406/barb.1975.57900 ◽

1975 ◽

Vol 61 (1) ◽

pp. 140-172

Author(s):

Jean-Pierre Hennart

Keyword(s):

Fast Reactor ◽

New Method

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Selective Sampling and Orientation of Non-Homogeneous Tissues

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100100238 ◽

1968 ◽

Vol 26 ◽

pp. 98-99

Author(s):

C. C. Clawson ◽

L. W. Anderson ◽

R. A. Good

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Light Microscopy ◽

Random Sampling ◽

New Method ◽

Microscope Examination ◽

Small Areas ◽

Selective Sampling ◽

Large Numbers ◽

Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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