巻号一覧
後続誌
19 巻, 1 号
選択された号の論文の9件中1～9を表示しています
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三好 滋1977 年 19 巻 1 号 p. 3-10
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリー原子力関係の機器を製作するに当って最も重要なことはその健全性を確保することである。そのためには従来から品質管理という手法が導入され実施されて来たが,それのみでは高度の健全性を確保するために不充分であるとの考えから,航空機および宇宙機器工業分野で実施されていた品質保証システムが導入され実施されて来ている。本稿では,まず機器の安全性と品質保証システムとの関連性を述べ,ついで代表的な4つの規格の内容について略述する。抄録全体を表示PDF形式でダウンロード (750K) -
川合 敏雄1977 年 19 巻 1 号 p. 11-17
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリー時間的に変化する対象を最適に制御するための理論として最大原理がある。これは微分法に対比すべき基礎的原理であって,広範囲の場面に生かさるべきである。しかしこの理論の解説は,従来数学的で近寄り難かった。本稿は,数学を用いないで最大原理を導き,原理の意味を直観的に消化しようと試みたものである。一般論における量が具体的問題で何に対応するかを示すため,炉心の燃焼制御問題を用いた。抄録全体を表示PDF形式でダウンロード (571K) -
内藤 奎爾1977 年 19 巻 1 号 p. 18-23
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリー原子炉の燃料・材料は絶えず炉内の放射線の照射を受けるが,照射によって固相中の化学種の拡散の促進されることが知られている。照射によって拡散が促進されると,燃料・材料の変形,相変化,腐食反応などの生起する可能性があり,原子炉の安全性に対しても重大な影響を与える。照射下の固相中の拡散の機構とその定量的な取扱いについてはまだ十分明らかでないが,本稿では,従来の実験事実の紹介を通してその基本的な性質を浮きぼりにすることを試みた。抄録全体を表示PDF形式でダウンロード (455K) -
松田 泰彦, 村田 徹, 田村 俊幸, 佐野 明1977 年 19 巻 1 号 p. 24-32
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリーRecently non-destructive assay techniques for active and passive assay of nuclear fuels have been powerfully developed in the U.S.A., the EC and other countries as nuclear safeguard techniques and nuclear material management techniques in nuclear plants.
The present paper will give some information on non-destructive assay techniques of nuclear fuels in different areas of the fuel cycle. And present status of instruments for these techniques is reviewed.抄録全体を表示PDF形式でダウンロード (3062K) -
美浜3号機での実施報告例島津 洋一郎, 板原 国幸, 西村 健1977 年 19 巻 1 号 p. 39-42
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリーRecently, constant axial offset control method for power distribution control is applied to PWRs (of Westinghouse type). In this mode of operation, Xe induced spatial oscillations which could cause the problem from the power distribution point of view hardly break out. Under special conditions such as tests, however, Xe oscillations can break out. It is required that power distribution can be controlled without any special operational actions.
Several control methods for Xe oscillations have been reported through many theoretical studies and operational experiences. Among them is First Overtone Control Method. This requires quite a simple control action but can effectively control Xe oscillations.
The authors have shown the effectiveness of First Overtone Control Method in Mihama Unit No.3 Reactor. In this report the detailed procedures are described. The outline of Constant Axial Offset Control Method is described in Appendix.抄録全体を表示PDF形式でダウンロード (2426K) -
有馬 省一, 中川 博, 大串 明1977 年 19 巻 1 号 p. 43-48
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリーThe separation of radioiodine from water samples by isotopic exchange reactions was investigated to develop a sample treatment method for γ-spectrometric analysis of radioiodine in reactor coolant water.
The ion exchange resins in the I, IO3 and OH form were prepared for the examination and comparison of their characteristics, and the collection of radioiodine on resins, washing of resins, and elution of radioiodine collected were studied by using the water samples containing 131I in the I-, CH3I and I2 form.
The following results were obtained: (1) the collection efficiencies of the resins in the I form were greater than 99% for 131I-, CH3131I and 131I2, and collection of CH3131I and 131I2 on the resins in the IO3 and OH form was less than that on the resins in the I form, (2) greater than 99% of collected 131I was retained on the resins washed with 50ml of 1%NaCl solution, and (3) 131I on the resins was not completely removed by elution with KI solution or perchloric acid; about 5% of 131I collected was retained.抄録全体を表示PDF形式でダウンロード (453K) -
石黒 亮二, 杉山 憲一郎, 熊田 俊明1977 年 19 巻 1 号 p. 49-54
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリーAn experimental study is presented on heat transfer around a circular cylinder in liquid sodium crossflow. The measurements cover the range of Reynolds number 2, 00016, 900 for Prandtl number of 0.0067 under a condition of nearly uniform surface heat flux. The results obtained by this experiment are as follows:
(1) It is confirmed that the present results are in fair agreements with the earlier results obtained by the same authors.
(2) The present results of local Nusselt number also agree with the theoretical estimation by Grosh & Cess on the front surface of cylinder, where the assumption of inviscid flow field is reasonably applicable. However, a considerable discrepancy is observed on the rear surface where flow separation occurs. The discrepancy may be closely related to the difference of flow pattern between inviscid and viscid fluid in the separation region.
(3) It is found that the experimental results of Andreevskii are considerably lower than the present ones except the separation flow region, where both of them are mutually in agreements.抄録全体を表示PDF形式でダウンロード (436K) -
金原 節朗1977 年 19 巻 1 号 p. 55-64
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリーIn the present paper, it is shown that the differential non-linearity of a Wilkinson type analog-to-digital converter (ADC) is related to a large amount of unbalance of even-numbered periods which is caused by the action of interference resulting from operation of a channel scaler.
To improve this situation, new methods were developed which allow such action of interference to be dispersed. Improvement by applying the new methods were confirmed and characteristic measurements were performed. Results of the measurements show that a differential non-linearity value of ±0.043%, without a stochastic deviation, is attainable for a clock rate of 300 MHz.
As the result, it is easily possible to fablicate ADC's operating at 300 MHz, also at even higher clock rates, to ensure a value of ±0.1% and smaller in differential non-linearity.抄録全体を表示PDF形式でダウンロード (3904K) -
1977 年 19 巻 1 号 p. 65-66
発行日: 1977/01/30
公開日: 2009/03/31
ジャーナル フリーPDF形式でダウンロード (250K)
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