送信者: "kkaneko" <kkaneko@eagle.ocn.ne.jp>
件名 : EEE会議（いわゆる「汚い爆弾」問題：米国原子力学会の研究報告）
日時 : 2003年5月7日 1:26

各位殿

2001年の９.１１事件以後、テロと原子力との関連で、とくに放射性物質爆弾（いわ
ゆる"dirty bombs"=「汚い爆弾」）の危険性が
マスコミなどで問題になっておりますが、果たして実際にどの程度の危険性があるも
のでしょうか。米国原子力学会では昨年11月この問題について研究発表会を開催し、
その結果をこのほどインターネットで公表しております（サイトは
http://eed.llnl.gov/ans/）。これらの研究によれば、放射性物質爆弾（RDD=放射線
を拡散する装置）は、テロリストによって実際に使われるかもしれないが、その殺傷
能力は限られており、大量の死者や破壊を齎すものではありえない、一般市民はこの
問題について相当誤解をしているので、啓蒙の必要がある、としているようです。ご
参考までに、本研究報告の序論をご紹介します。　
ちなみに、この情報は、米国原子力学会のDr. Bill Sutcliffe (ローレンス・リバー
モア国立研究所）が、古川和男氏を通じて送ってきたものです。
金子熊夫
************************************************

Dear Colleagues,

The papers from the American Nuclear Society sessions on Radiological
Terrorism last November are now online at http://eed.llnl.gov/ans/. I've
copied the Introduction below for your convenience.

We are now in the process of planning and soliciting papers for the
ANS/Global 2003 meeting next November in New Orleans. See
http://www.ans.org/meetings/pdfs/2003/wm2003-cfp.pdf and
http://fcwmd.ans.org/global2003/. In particular we are planning a session on
Radiological Terrorism intended to expand and update the information from
last year.

Please pass this message on to anyone that you think might be interested in
this topic.

Thank you.

Bill Sutcliffe
____________________________________________________________________________
____

American Nuclear Society
Sessions on Radiological Terrorism
Washington, DC, November 18, 19, 20, 2002
Omni Shoreham Hotel

Introduction

Dirty bombs, otherwise known as radiation dispersal devices (RDDs), or
radiological weapons, have been and continue to be
prominently in the news. They are often included with nuclear, biological,
and chemical weapons under the rubric of "weapons of
mass destruction." Our contention is that although radiological weapons may
be used by terrorists against masses of innocent
people, large amounts of death and destruction will not result.

Unfortunately, the public does not have a good perspective on the dangers
presented by radiological terrorism. Further, providing
information and a proper perspective on radioactive sources, dispersion,
radiation effects, counter and preventive measures will
serve to reduce the impact of a threat or act of radiological terrorism. A
person knowledgeable about the hazards of radiation will
be able to make a reasoned decision about how to react to a release of
radioactive material. In this respect it is important to
note the inherent limitations of a RDD that will be seen in the
presentations. For a given amount of radioactive material, the wider
the dispersion, i.e., the more people potentially affected, the less likely
a individual is to have his or her life shortened. If on the
other hand the radioactive material is not widely dispersed, few in any
persons are likely to be affected although the health
effects are potentially more serious.

The sessions listed below were organized to educate the ANS community and
the broader public on the relative dangers of
radiological weapons. The ANS Special Committee on Nonproliferation and the
Embedded Topical Meeting on Emergency
Preparedness & Response co-sponsored these sessions.

The papers were presented in three sessions which followed a logical order.
The first session described sources of radioactive
materials and the potential for dispersion. The second dealt with the impact
of dispersing radioactive material. The third session
addressed preventative actions and counter measures. Summaries of the
presentations can be viewed by clicking on the session
titles. In some cases these papers are not exactly as they were presented at
the meeting. Our attempt here is to capture as
much useful information on the topic as possible, rather than to provide a
historical record.

Not all the papers were presented at the meeting. Difficulties in arranging
travel from Russia prevented the presentation of the
paper by O.A. Pavlovski and V.V. Tchoudanov in the first session. David
Albright was unable to present his paper in the second
session because of a number of pressing matters. John Poston's paper on NCRP
Report 138 was expertly presented in the third
session by Eva Hickey who served on the committee that authored the report.
In addition, John Ahearne made some important
remarks about communicating risk at the end of the third session. These
remarks are included below.

The literature about radiological terrorism is growing and contains the
following useful reports.

Management of Terrorist Events Involving Radioactive Material Report 138
Communicating Nuclear Risk: Informing the Public about the Risks and
Realities of Nuclear Terrorism by Tonya L. Putnam
Commercial Radioactive Sources: Surveying the Security Risks by Charles D.
Ferguson, Tahseen Kazi, and Judith Perera

I would like to thank Mel Buckner from the Savannah River Site for his
invaluable assistance as Chairman of the ANS Special Committee on
Nonproliferation and Track Leader for the Fuel Cycle, Materials, and
Nonproliferation Track. Thanks are also due to Christie Crozier, David
Gutierrez, and Jared Neuss for constructing this web site. Finally, I wish
to thank Craig Schultz of LLNL's Energy and Environment Directorate for
supporting this effort.

W.G.S.

UCRL-WEB-153003

____________________________________________________________________________
____

William G. Sutcliffe
LLNL, L-632
7000 East Avenue
Livermore, CA 94550

EMail: billsutcliffe@llnl.gov, Tel: 925 422 3986, Fax: 925 422 9913