Witnessing authority
Commissioning Air Systems (BG 49/2015), written by Chris Parsloe and published by BSRIA in March 2015, explains how to commission ducted air distribution systems in buildings. It was originally published in 2013 and was then updated in 2015.
It defines the witnessing authority for the purposes of the guide as: ‘The firm or person that may sometimes be appointed to witness the results of commissioning, and to verify that results obtained comply with the requirements of the design criteria and commissioning specification.’
--BSRIA
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