HPS N43.14-2011

$15.60

Radiation Safety for Active Interrogation Systems for Security Screening of Cargo, Energies up to 100 MeV

Published By	Publication Date	Number of Pages
HPS	2011	83

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Category: HPS

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Description

This standard applies to non-intrusive inspection (NII) systems
using active interrogation methods for the detection of contraband
(drugs, explosives, and weapons of mass destruction [WMD]).
Highenergy neutrons have been used for such purposes but other
methods are being developed that use high-energy photons as well.
In particular, this standard covers the safety aspects of active
interrogation systems, henceforth called "systems," using, but not
limited to, high-energy x-rays (bremsstrahlung) produced by
high-energy electron linear accelerators, high-energy neutrons
produced by the (d,d) and (d,T) reactions, fission neutrons from
252Cf, highenergy neutrons produced by (?,n) reaction in linear
accelerators using Be/W targets, or other accelerator methods for
producing high-energy photons and neutrons. (In this standard, the
term high-energy photons is used to mean high-energy x-rays and
gamma rays in the MeV range of energies.)

The maximum energy of the ionizing radiation used for
interrogation by these systems is limited to 100 MeV because the
use of general-purpose active interrogation systems employing
energies greater than this level is not expected in the foreseeable
future.

This standard does not apply to conventional security imaging
systems using x-rays and gamma rays. However, it includes hybrid
systems combining active interrogation systems with conventional
security imaging systems. In that case, a hybrid system capable of
doing both functions shall meet the standards of both types of
systems.

This standard does not apply to general safety involving
mechanical failure, electrical shock, chemical explosion, gases
under pressure, and noxious gases. It also does not apply to
possible damaging effects of ionizing radiation to foods, medical
devices, pharmaceuticals, photographic films and papers, and
microelectronic devices containing computer chips.

Additional information