The Planning (General Development Procedure) Order (Northern Ireland) 2015

2.  The Health and Safety Executive for Northern Ireland where a development proposal—

(a) is within an area which has been notified to the Department by the Health and Safety Executive for Northern Ireland for consultation because of the presence within the vicinity of toxic, highly reactive, explosive or inflammable substances and which are present and which involves the provision of—

(i) residential accommodation,

(ii) more than 250 square metres of retail floor space,

(iii) more than 500 square metres of office space, or

(iv) more than 500 square metres to be used for an industrial process,

or which is otherwise likely to result in a major increase in the number of persons working in or visiting the notified area; or

(b) where the development—

(i) involves the siting of a new establishment,

(ii) consists of the modification of an existing establishment which could have significant repercussions on major accident hazards, or

(iii) includes transport links, locations frequented by the public and residential areas in the vicinity of existing establishments, where the siting or development is such as to increase the risk or consequence of a major accident(1).

(1)

The expressions used in paragraph (b)(ii) have the same meaning as in Council Directive 96/82/EC on the control of major accident hazards involving dangerous substances