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ASTM-E1893:2008 Edition

ASTM-E1893:2008 Edition

$58.50

E1893-08a Standard Guide for Selection and Use of Portable Radiological Survey Instruments for Performing In Situ Radiological Assessments to Support Unrestricted Release from Further Regulatory Controls

Published By Publication Date Number of Pages
ASTM 2008 28
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1.1 This standard provides recommendations on the selection and use of portable instrumentation that is responsive to levels of radiation that are close to natural background. These instruments are employed to detect the presence of residual radioactivity that is at, or below, the criteria for release from further regulatory control of a component to be salvaged or reused, or a surface remaining at the conclusion of decontamination and/or decommissioning.

1.2 The choice of these instruments, their operating characteristics and the protocols by which they are calibrated and used will provide adequate assurance that the measurements of the residual radioactivity meet the requirements established for release from further regulatory control.

1.3 This standard is applicable to the in situ measurement of radioactive emissions that include:

1.3.1 alpha

1.3.2 beta (electrons)

1.3.3 gamma

1.3.4 characteristic x-rays

1.3.5 The measurement of neutron emissions is not included as part of this standard.

1.4 This standard dose not address instrumentation used to assess residual radioactivity levels contained in air samples, surface contamination smears, bulk material removals, or half/whole body personnel monitors.

1.5 This standard does not address records retention requirements for calibration, maintenance, etc. as these topics are considered in several of the referenced documents.

1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
2 Terminology
3 Significance and Use
Instrument Selection
4 Instrument Use
6 X1. MINIMUM DETECTABLE ACTIVITY (MDA)
X1.1
X1.2
X1.3
X1.4
X1.5
7 X1.6
X1.7
FIG. X1.1
8 X2. DETECTION OF LOW-LEVEL RESIDUAL ACTIVITY
X2.1
X3. SCANNING EFFECTS – CONTAMINATION MONITORS
X3.1
X3.2
X3.3
X3.4
X3.5
TABLE X1.1
9 X3.6
X3.7
X3.8
X3.9
X3.10
FIG. X3.1
10 FIG. X3.2
11 X4. EFFECTS OF SOURCE-DETECTOR GEOMETRY
X4.1
X4.2
X4.3
X4.4
TABLE X3.1
12 FIG. X4.1
13 FIG. X4.2
14 FIG. X4.3
15 X5. FACTORS AFFECTING THE MEASUREMENT OF ALPHA AND BETA SURFACE CONTAMINATION
X5.1
X5.2
X5.3
X5.4
X5.5
X5.6
X5.7
X5.8
FIG. X5.1
16 X5.9
X5.10
X5.11
X5.12
X5.13
X5.14
X5.15
X5.16
X5.17
X5.18
17 X5.19
X5.20
X5.21
X5.22
18 FIG. X5.2
19 FIG. X5.3
20 X6. GEOMETRY CORRECTIONS
X6.1
FIG. X6.1
21 X7. SURFACE COATING EFFECTS
X7.1
22 FIG. X7.1
23 X8. SURFACE BACKSCATTER EFFECTS
X8.1
X8.2
X8.3
24 FIG. X8.1
25 X9. FACTORS AFFECTING THE MEASUREMENT OF GAMMA ACTIVITY
X9.1
X9.2
26 FIG. X9.1
27 FIG. X9.2
28 REFERENCES

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