車の両輪のサイズ

A Size of the wheels of a car

柳澤 和章

Yanagisawa, Kazuaki

放射線利用の経済規模は、一部又は全部を放射線利用することで完成した製品の出荷額(Shipment)を、公開データ等により単年度ベースで求めて金銭表示した結果である。内閣府から委託された調査の結果によれば、生活基盤を構築する原子力発電の経済規模は4兆7,410億円であり、9電力5万人余の従業員が働いている。一方、放射線利用の経済規模は4兆1,117億円である。原子力利用は8兆8,527億円、エネルギー利用と放射線利用の割合は54%:46% (前回平成9年では61%:39%)となっている。まさに両者は車の両輪となって本体(日本経済)を支えていることがわかる。原子力利用の合計値約8兆8,500億円は、対GDP比1.8%である。

Economic scale of radiation application is defined as money based annual shipment of products those were partly or wholly utilized the technology of radiation during a fabrication process. As a result of our study that was supported financially by the Cabinet, the economic scale of nuclear energy is revealed to be 4,741 billion yen (BYen). This energy is considered to be useful for establishment of energy infrastructure in our country. A total of 50,000 peoples are working in 9 electric power companies. On the other hand, an economic scale of radiation application is 4,112 BYen. The sum of the two is called as nuclear utilization having economic scale as much as 8,853 BYen, where the ratio between nuclear energy and radiation application is 54% vs. 46%. In our previous study, it was 61% vs. 39%. This is like wheels of car (Japanese economy), supporting the base of economic development. Nuclear utilization is corresponded to 1.8% of Gross Domestic Products.