Acoustics. Guidelines for noise control by silencers1 Scope This International Standard deals with the practical selection of silencers for noise control in gaseous media. It specifies the acoustical and operational requirements which are to be agreed upon between the supplier or manufacturer and the user of a silencer. The basic principles of operation are described in this International Standard, but it is not a silencer design guide. The silencers described are suitable, among others, for

Residues of construction are adequately flushed from water distribution systems

conformity marking

• Detectors and phantom materials for clinical dosimetry of beta radiation

BS EN 1090‑2 is the second part of a series of documents on steel structures and aluminium structures

Innovation

BS 3446-1 helps you to build consumer trust and confidence in the product

It applies to concentrations of the elements not exceeding the following limits: phosphorus 20 4g/g (0

dimensions and materials

regional supervision centre

attention is drawn to BS EN ISO 14698 (all parts)

that wants to benefit from business collaborations

BS EN 60068-1 provides tests compatible with different intensities of environmental conditions depending on the severity