BS 4247-1:1981

Foreword
Cooperating organizations
Methods
Section one. General
0 Introduction
1 Scope
2 References
3 Definitions
Section two. Method of test A
4 Materials
4.1 Form of test
4.2 Number of test samples
4.3 Size of test samples
5 Preparation of test samples
5.1 Condition of test samples
5.2 Paint and coatings having 'edge effects'
5.3 Ceramic tiles
5.4 Grout
5.5 Other materials
6 Contaminants
6.1 Contaminant solution
6.2 Other contaminants
7 Decontaminants
7.1 Solution 1
7.2 Solution 2
8 Radiation detector
8.1 Counting instrument
8.2 Associated equipment
9 Test procedure
9.1 Contamination of the test samples
9.2 Radiation count
9.3 Decontamination
Section three. Method of test B
10 Materials
11 Preparation of test samples
12 Contamination procedure and test samples
12.1 Contamination procedure
12.2 Test samples
13 Decontaminant solution
13.1 Composition
13.2 Dilution of decontaminant solution
14 Counting equipment
15 Test procedure
15.1 Assessment of initial activity
15.2 Decontamination
Section four. Calculation of results and certification
                of tests
16 Testing authorities and certificates
16.1 General
16.2 Calculation of decontamination factor (DF)
16.3 Test certificates
16.4 Testing and certification
Appendices
A Typical details of agreement for method of test B
B Suggested procedure for the manufacture and
      examination of decontaminant powder
C Surface active agents that are acceptable for
      inclusion in detergent solution

Describes a basis for the assessment of surface materials for use in radioactive areas and provides two methods for testing the ease of decontamination.