To specify the correct asphalt binder for a given climate zone. Brazilian standards (DNIT, DER) often reference NBR 3021 in public tenders.
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
Specialized facilities, such as the TNO Structural Dynamics lab or QinetiQ Marine Structures , use heavy-weight horizontal shock machines to simulate these conditions for manufacturers. Review Summary
Specifically covers requirements and design for shock mountings (resilient mounts) used to isolate equipment from hull-transmitted shock. Specified Shock Grades br 3021 standard pdf
: It is frequently used in conjunction with other standards like
The standard coordinates with military-approved elastic fasteners, including:
Maintaining a central, authenticated PDF on a company intranet ensures that all departments are working from the latest revision, eliminating the costly mistake of manufacturing parts using obsolete data. Implementing BR 3021 in Quality Management Systems (QMS) To specify the correct asphalt binder for a
: Manufacturers must provide shock test certifications, often ratified by national defense labs like the National Ship Design and Research Centre or equivalent naval authorities.
BR 3021 is a British Ministry of Defence (MoD) standard that defines the shock requirements and testing methods
BR 3021 is typically split into distinct procedural components: BR 3021 is a British Ministry of Defence
Why?
: Tests require applying inputs along three mutually perpendicular axes to evaluate resistance in all directions.