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BS ISO 16640:2021

BS ISO 16640:2021

$198.66

Monitoring radioactive gases in effluents from facilities producing positron emitting radionuclides and radiopharmaceuticals

Published By Publication Date Number of Pages
BSI 2021 64
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This document focuses on monitoring the activity concentrations of radioactive gases. They allow the calculation of the activity releases, in the gaseous effluent discharge from facilities producing positron emitting radionuclides and radiopharmaceuticals. Such facilities produce short-lived radionuclides used for medical purposes or research and can release gases typically including, but not limited to 18F, 11C, 15O and 13N. These facilities include accelerators, radiopharmacies, hospitals and universities. This document provides performance?based criteria for the design and use of air monitoring equipment including probes, transport lines, sample monitoring instruments, and gas flow measuring methods. This document also provides information on monitoring program objectives, quality assurance, development of air monitoring control action levels, system optimisation and system performance verification.

The goal of achieving an unbiased measurement is accomplished either by direct (in-line) measurement on the exhaust stream or with samples extracted from the exhaust stream (bypass), provided that the radioactive gases are well mixed in the airstream. This document sets forth performance criteria and recommendations to assist in obtaining valid measurements.

NOTE 1

The criteria and recommendations of this document are aimed at monitoring which is conducted for regulatory compliance and system control. If existing air monitoring systems were not designed according to the performance criteria and recommendations of this document, an evaluation of the performance of the system is advised. If deficiencies are discovered based on a performance evaluation, a determination of the need for a system retrofit is to be made and corrective actions adopted where practicable.

NOTE 2

The criteria and recommendations of this document apply under both normal and off?normal operating conditions, provided that these conditions do not include production of aerosols or vapours. If the normal and/or off-normal conditions produce aerosols and vapours, then the aerosol collection principles of ISO 2889 also apply.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
16 4 Symbols
19 5 Factors impacting the design of the monitoring system
6 Types of monitoring systems
20 7 General monitoring system requirements
7.1 General
7.2 Detection range
7.3 Detector location
7.3.1 Background
21 7.3.2 Ease of accessibility for maintenance
7.3.3 Environmental conditions
7.4 Emission stream flow measurement
8 Requirements specific to bypass systems
8.1 General
8.2 Sample extraction locations
22 8.3 Condensation
8.4 Maintenance
23 8.5 Leak checks
9 Requirements specific to in-line systems
9.1 General
9.2 Location of the probe or detector
9.3 Environmental conditions
10 Evaluation and upgrading of existing systems
24 11 Quality assurance and quality control
26 Annex A (informative) Factors impacting the monitoring system design
39 Annex B (informative) Evaluating uncertainty of effluent measurement
49 Annex C (informative) Quality assurance
53 Annex D (informative) Mixing demonstration and sampling system performance verification
57 Annex E (informative) Techniques for measurement of flow rate through a stack or duct
59 Bibliography

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BS ISO 16640:2021
$198.66