MODUK DEF STAN 59-411: PART 1 PDF

The requirements of this Standard apply to the limitation of propagated electromagnetic energy, whether conducted or radiated, and to the limitation of the susceptibility of electrical and electronic equipment, subsystems and systems to such energy.

The Standard outlines the typical electromagnetic environmental requirements for electrical/electronic equipment used in the Services and guidance is given covering documentation which ensures management and control procedures are implemented during all acquisition stages of any given project.

This standard does not address exceptionally severe electromagnetic situations (e.g. equipment mounted on the mast of a warship). The severity of these environments should be established by modelling, prediction or measurement. The test limits should then be tailored accordingly. The Land Class A limits provide a baseline requirement for Land Electronic Counter Measures (ECM) vehicles and equipment however this is a dynamic area with some unique requirements therefore advice regarding any specific tailoring should be obtained from either DE3A or DSTL.

This Standard also includes some simulated Nuclear Electromagnetic Pulse (NEMP), lightning strike and electrostatic discharge tests at Line Replacement Unit (LRU) level.

This Standard is not concerned with the allocation of radio frequencies, performance tests on communication equipment or the direct ignition of fuel/ordnance by electromagnetic energy. Guidance on these can be sought from the Defence E3 Authority, and Defence Spectrum Management (part of Directorate of Command and Battlespace Management (Army) D CBM(A)) or Defence Ordnance Safety Group.

This Part of the Defence Standard provides advice on the selection of EMC requirements for all military equipment and the application of the complete Standard throughout all phases of the acquisition process. It concentrates that advice under the following headings:

Operational scenario and the electromagnetic environment.

Specification of EMC contractual requirements.

Control and management of EMC.

Management roles and responsibilities

EM control plan

EM test plan

EM test report

EM Test Certificate

Selection of tests

Selection of limits.

Total system trials requirements.

Post design services requirements.

In-service maintenance.

Change of role.

Health and safety.

To cater for particular interests of each of the Three Service Arms of the MOD, their special requirements are noted as they arise, under the headings above. Although Part 1 is concerned primarily with EMC, the management and control procedures described can be applied across the E3 disciplines e.g. EMC, EMP, Radio Hazards (RADHAZ), TEMPEST, Electronic Counter Measures (ECM), etc. The MOD should ensure that their Prime Contractor recognises and exploits the economies arising from the degree of commonality which exists between EMC and these kindred subjects, with respect to equipment design, management and control procedures, and even test requirements where possible.

Should additional advice be required, this can be obtained either from the Equipment Sponsor or from DCSA DE3A. There are also several Agencies and Commercial Companies within the United Kingdom who can be contacted via the DStan Helpdesk.