New EN 1127-1 2011 Edition on Explosive atmospheres – Explosion prevention and protection – Part 1: Basic concepts and methodology affects those certifying to Directive 94/9/EC

BS EN 1127-1 2011 Edition, “Explosive atmospheres – Explosion prevention and protection – Part 1: Basic concepts and methodology,” has just been released.  It is the official English language edition of EN 1127-1:2011.  The administrative process of integrating the new release with the Lists of Harmonized Standards for Directives 94/9/EC and 2006/42/EC is expected to be completed shortly.

EN 1127-1 specifies general design and construction methods to help designers and manufacturers in achieving explosion safety in the design of equipment, protective systems and components at all stages of its use.  It is applicable to any equipment, protective systems and components intended to be used in potentially explosive atmospheres, under atmospheric conditions. These atmospheres can arise from flammable materials processed, used or released by the equipment, protective systems and components or from materials in the vicinity of the equipment, protective systems and components and/or from the materials of construction of the equipment, protective systems and components.

The standard specifies methods for the identification and assessment of hazardous situations leading to explosion and the design and construction measures appropriate for the required safety. This is achieved by risk assessment and risk reduction.

The safety of equipment, protective systems and components can be achieved by eliminating hazards and/or limiting the risk by using a) appropriate design (without using safeguarding); b) safeguarding; c) information for use; d) any other preventive measures.

Measures in accordance with a) (prevention) and b) (protection) against explosions are dealt with in Clause 6, measures according to c) against explosions are dealt with in Clause 7. Measures in accordance with d) are not specified in this European Standard. They are dealt with in EN ISO 12100:2010, Clause 6.

The preventive and protective measures described in EN 1127-1 will not provide the required level of safety unless the equipment, protective systems and components are operated within their intended use and are installed and maintained according to the relevant codes of practice or requirements.

The new BS EN 1127-1:2011 and all BS publications are available from Document Center Inc. through our website, www.document-center.com.  Or if you prefer, you can contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  The various publications for the EN standards can cause confusion.  If you have any questions about what publications you should be using, please contact us.

New BS EN 55022:2010 just released on Information technology equipment – Radio disturbance characteristics – Limits and methods of measurement

The new BS EN 55022 2010 Edition has just been released for public distribution.  It’s titled “Information technology equipment. Radio disturbance characteristics. Limits and methods of measurement,” and is the official English language edition of the EN 55022:2010.  The standard is a modified adoption of the CISPR 22 6th Edition from 2008.

The standard applies to information technology equipment (ITE). Procedures are given for the measurement of the levels of spurious signals generated by the ITE and limits are specified for the frequency range 9 kHz to 400 GHz for both class A and class B equipment. No measurements need be performed at frequencies where no limits are specified. The intention of this publication is to establish uniform requirements for the radio disturbance level of the equipment contained in the scope, to fix limits of disturbance, to describe methods of measurement and to standardize operating conditions and interpretation of results.

BS EN 55022 applies to 2 EU Directives: EMC Electromagnetic Compatibility (2004/108/EC) and RTTE Radio and telecommunications terminal equipment (1999/5/EC).  It replaces the BS EN 55022:2006+A2:2010 Edition, which remains current.

This standard, and all BS documents, are available from Document Center Inc. via our website, www.document-center.com.  Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We can help you with questions regarding the EN standards, as well as all your other conformance documentation requirements.

 

New BS EN 55024 2010 Edition released

BS EN 55024 has just been released as the new 2010 edition.  The popular standard is titled “Information technology equipment. Immunity characteristics. Limits and methods of measurement.”  The date on the new edition is January 2011 and the document is available now from Document Center Inc.

The new BS EN 55024:2010  is the official English language edition of the EN 55024 and is identical to the CISPR 24, 2010 Edition.

It establishes uniform requirements for the electromagnetic immunity of information technology equipment. BS EN 55024 specifies applicable tests, test levels, product operating conditions and assessment criteria.  Test methods are then found in the referenced Basic EMC Immunity standards.

BS EN 55024 sets out the requirements to provide an adequate level of intrinsic immunity.  The goal is for the equipment to operate as intended in its environment.  The standard specifies the immunity test requirements for equipment defined in the scope in relation to continuous and transient, conducted and radiated disturbances, including electrostatic discharges (ESD).

Some tests are specified in defined frequency bands or at selected frequencies because of testing and performance assessment considerations.  Equipment which fulfils the requirements at these frequencies is deemed to fulfil the requirements in the entire frequency range from 0 Hz to 400 GHz for electromagnetic phenomena.

The test requirements are specified for each port considered.

This standard, and many more, are available from Document Cen5ter Inc. at www.document-center.com, or by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Feel free to contact us with additional questions.