Reciprocating internal combustion engines. Measurement of sound power level using sound pressure - Survey method1 Scope This document specifies the survey method, which is the measurement method of the sound power level for reciprocating internal combustion engines. This document applies to all reciprocating internal combustion engines falling within the field of application of ISO 30461 and other internal combustion engines where no suitable International Standard exists. NOTE In this document, reciprocating internal combustion engines are referred to as

in the waterworks or in the drinking water distribution network

they are also exposed to frost damage and to moisture

and also establish levels that are achievable and more in line with best practices

BS EN 13215 gives you procedures to calculate the performance at various suction temperatures/superheat and at various compressor speeds as well as gives correction factors in order to evaluate the errors and eliminate them immediately

3 Preliminary extraction

This document specifies safety requirements for climbing/bouldering walls

BS 6949 contains requirements for bitumen-based coatings unsuitable for use in contact with potable water

welded end for pipe couplings 8°30' for

in a manhole or a tunnel for underground cables

storage or transportation of products intended for injection

and rated currents up to 125 A per contact

BS EN 1176-3 is not applicable to waterslides