Pdf: Br 3021 Standard

BR 3021 categorizes equipment based on its location within the vessel, as different areas experience varying shock intensities: Shock Grade Application Area Vertical Severity Lateral Severity Below the waterline (Hull-mounted) 120g, 8 ms NSS Grade II Above the waterline (Deck/Bulkhead) 50g, 11 ms 22g, 11 ms

Informing the selection of shock mounts and isolation systems to attenuate forces transmitted through the ship’s hull.

The equivalent US military standard for high-impact shock testing. br 3021 standard pdf

While BR 3021 is a cornerstone of UK naval standards, it is frequently cited alongside other international and domestic specifications:

Establishing if a component can retain its functional integrity after a high-impact event. BR 3021 categorizes equipment based on its location

An Indian Joint Services Specification often used in conjunction with BR 3021 for electronic and electrical equipment.

Components critical to the ship's combat capability and safety must meet these highest standards. Comparison with Related Standards An Indian Joint Services Specification often used in

A more recent UK standard often replacing or supplementing BR 3021 for specific vessel classes.

The modern Maritime Acquisition Publication that provides updated guidance on naval shock requirements.

The primary objective of BR 3021 is to define the mechanical shock severities that onboard equipment must withstand. It provides a framework for: