BS 4247-1:1981
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Surface materials for use in radioactive areas Methods of measuring and evaluating the decontamination factor
Hardcopy , PDF
02-08-2013
English
30-11-1981
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
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