ECSS-E-ST-10-12C – Methods for the calculation of radiation received and its effects, and a policy for design margins (15 November 2008) +Corr.1 (22Feb2017)




This standard is a part of the System Engineering branch of the ECSS engineering standards and covers the methods for the calculation of radiation received and its effects, and a policy for design margins. Both natural and man-made sources of radiation (e.g. radioisotope thermoelectric generators, or RTGs) are considered in the standard.

This standard applies to the evaluation of radiation effects on all space systems.

This standard applies to all product types which exist or operate in space, as well as to crews of manned space missions. The standard aims to implement a space system engineering process that ensures common understanding by participants in the development and operation process (including Agencies, customers, suppliers, and developers) and use of common methods in evaluation of radiation effects.

This standard is complemented by ECSS-E-HB-10-12 “Calculation of radiation and its effects and margin policy handbook”.

This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS-S-ST-00.



Md5 checksum .pdf file = C4812E6D3AFA3F7CD052B73086DD2BBA
Md5 checksum .docx file = D1D45B01F77D97061509201AB17E1005

This standard is supported by ECSS Handbook:ECSS-E-HB-10-12A (17 December 2010).


Identified typographical error:

Following “typo” was identified in the published document and is recorded as a Change Request. The document has not been updated and still contains the typo:

  • Requirement 5.3c (page 37): The Standard called from this requirement is ECSS-E-ST-10-04 and not as written ECSS-E-ST-10-09.

ECSS Executive Secretariat, 22 February 2017

Additional information for propose update of abbreviated term “FASTRAD”:

  • 3D radiation analysis software for advanced radiation dose analysis and shielding optimization with ray-tracing and Monte Carlo calculation methods to predict space radiation effects at electronic component and material levels

ECSS Executive Secretariat, 16 June 2021