IEEE N42.38-2015 pdf free

IEEE N42.38-2015 pdf free.American National Standard for Performance Criteria for Spectroscopy-Based Portal Monitors Used in Homeland Security.
IEEE N42.38 specifies the operational and perfonnanee requirements for spectroscopy-based portal monitors (SRPMs) used in homeland security applications. SRPMs have the ability to detect radioactivity and identify radionuclides that may be present in or on persons, vehicles, or containers through the use of gamma spectroscopy techniques.
Operational requirements established by this standard include radiation detection and radionuclide identification, and those requirements associated with the expected electrical, mechanical, and environmental conditions when a SRPM is dcployed. The test methods described in this standard provide a means to ensure that a SRPM meets the requirements stated. Successful completion of the tests described in this standard should not be construed as an ability to successfully detect and identify all radionuclides in all environments.
This standard does not address portal monitors that may have the ability to reduce the effects caused by the presence of naturally occurring radioactive material (NORM) without the ability to identify specific radionuclides. Monitors with this capability are addressed by ANSI N42.35.
Thc purpose of this standard is to specify the pciformancc criteria and test mcthods for SRPMs used for homeland security. Testing is conducted under a set of conditions to determine if an SRPM meets the requirements of this standard. Special applications, which could include an SRPM’s operation under weather conditions not addressed by this standard, shall require additional testing. Detection needs not addressed by this standard shall also require additional testing. e.g., estimation of the background depression due to vehicle presence. masking. or shielding configurations.
Obtaining operating performance that meets or exceeds the specifications stated in this standard depends upon properly installing the SRPM, establishing appropriate operating parameters, providing security for the systems. maintaining calibration, implementing a suitable routine testing and maintenance program, auditing compliance with quality requirements, and providing proper training for operating personnel.
The following rekrenccd documents arc indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
For the purposes of this standard, the following terms and definitions apply. The IEEE Standards D-’finiiio,, Database should be consulted for terms not defined in this clause.”
acceptance test: Evaluation or measurement of performance characteristics to verify that certain stated peeifications and contractual requirements are met.
accuracy: The degree of agreement between the instrument reading and the conventionally true value of the quantity being measured.
adjust: To alter the reading of an instrument by means of a built-in variable (hardware or software) control.
alarm: An audible, visual, or other signal activated when the instrument reading. response. or identification result exceeds a preset value, falls outside of a preset range, or indicates the presence of a radionuclide of interest, respectively.
calibration: A set of operations under specified conditions that establishes the relationship between values indicated by a measuring instrument or measuring system and the conventionally true values of the quantity or variable being measured.
catcgor: A subdivision of radionuclides. Examples include, but are not limited to, special nuclear material (SNM), medical, industrial, and naturally occurring radioactive material (NORM).
check source: A not-necessarily calibrated radiation source that is used to confirm the continuing functionality of an instrument.IEEE N42.38 pdf download.