HMIP clarifies rules for multi-process sites

A new concept of "ring fencing" has been introduced by HM Inspectorate of Pollution (HMIP) to clarify how authorisations under integrated pollution control (IPC) should deal with complex industrial sites where several processes may be served by common effluent or waste management facilities.

The problems posed for the authorisation process by multi-process sites have hardly arisen in the initial phase of IPC, which dealt primarily with large combustion plants, but will crop up with increasing frequency as chemical and petrochemical works come within the new regime.

The central issue is how to handle authorisations for a site with several processes, only some of which may fall within IPC, or which are due to come within IPC at

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