Introduction
PLAN A CHEMICAL SURVEY
To plan a chemical survey, you must determine the amount of detail required for the survey, plot
contamination reports, determine the information to be reported by the survey element, co-ordinate
after-mission decontamination, and compile information for a briefing. You will learn this information
in Lesson 3.
Throughout this subcourse you will see the unit of measure cGy(rad) used. As of 1 January 1982, the
unit of absorbed dose "rad" was changed to centigray "cGy." This is in conformance with the
conversion to the international system of metric units which has been adopted by NATO. There will be
a transitional period of four years. During this transitional period, the new unit centigray should be
written as cGy(rad) for 1 rad or 10 Gy(mrad) for millirad.
The information you will receive in this subcourse will aid you in planning chemical and radiological
surveys. You will be better prepared to supervise the preparations for and conduct of ground or aerial
radiological surveys. You also will be better prepared to plan and supervise chemical surveys, and
process the information from the survey. The information you learn in this subcourse may protect you
and your unit and prevent casualties in a radiological environment.
Read each lesson carefully and study the illustrations. Then try to answer the questions in the practice
exercise. Following the practice exercise are answers to the questions, referenced to learning events in
the lesson. When you have completed all the lessons and practice exercises, it is recommended that you
review all the material in the subcourse before beginning the posttest.
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