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10 Feb. 2015

AS/NZS 4024.1-2014 Safety of Machinery - A Massive Revision

AS/NZS 4024

AS/NZS 4024.1-2014 Safety of Machinery - A Massive Revision

For those that are not aware AS 4024.1 has undergone a massive revision in the latter part of 2014. This is the first revision since 2006.

Some key points of the revision are:

  • It is now also a New Zealand Standard as denoted by the abbreviation NZS and is therefore recognised as the principal standard for machinery safety in New Zealand by the authorities;
  • Over 20 parts of it have been updated;
  • The updates were largely adoptions of the latest ISO/IEC standards to bring Australia and New Zealand in line with the latest international standardsThe intent is to have some consistency globally which should be welcomed by importers/exporters of machinery;
  • The standard should be read with consideration to AS/NZS 4024.1100-2014 Application Guide;
  • It can now be purchased as a complete document. It should be noted that the hardcopy version is no longer a single folder instead you will receive bunch of individual standards;
  • The sections on Risk Assessment have a lot more useful guidance contained within;
  • For the design of Safety Related Parts of Control Systems you now have the choice of using AS 4024.1501-2006 (the old standard that uses Categories) and its companion validation standard AS 4024.1502-2006 or the new standard AS/NZS 4024.1503-2014 which deals in Performance Levels. Interestingly enough the companion validation standard for AS/NZS 4024.1503 which should have been included as AS/NZS 4024.1504 has been omitted from this revision for reasons best known to the Standards Australia committee. The Application Guide mentions that the choice of categories or performance levels is an interim measure. ISO 13849-1 (same as AS/NZS 4024.1503) and IEC 62061 (Safety Integrity Level standard) are part of a merging process currently going on in Europe which is expected to result in a new standard for design of safety related parts of control systems to be launched in 2016 as ISO 17305 Safety of machinery - Safety functions of control systems;
  • AS/NZS 4024.1602-2014 now has some rigorous requirements for interlock switches particularly in relation to making them more difficult to bypass.