The Hirwaun Generating Station Order 2015

Detailed Design

4.—(1) The authorised development must be carried out in accordance with the approved plans in Table 1 below, inclusive of any limits of deviation, bearing the references listed below and any other plans, drawings, documents, details, schemes, statements or strategies which are approved by the relevant planning authority pursuant to any requirement (as the same may be amended by approval of the relevant planning authority in accordance with requirement 18(1))—

Table 1

Works plans	Submission document reference number 2.3 Revision 3
Rights of way, streets and access plan	Submission document reference number 2.7 Revision 3

(2) The authorised development must be carried out in accordance the parameters specified in Table 2 below (as the same may be amended by approval of the relevant planning authority pursuant to requirement 18(1))—

Table 2

Building or Structure	Maximum height (metres above 211m AOD	Minimum height (metres above 211m AOD)	Maximum length (metres)	Minimum length (metres)	Maximum width (metres)	Minimum width (metres)
Each gas turbine generator (where one or two gas turbine generators are constructed) (Part of numbered work 2A)	19.0	–	30.0	–	30.0	–
Each gas turbine generator (where three, four or five gas turbine generators are constructed) (part of numbered work 2A)	10.0	–	36.0	–	23.0	–
Each exhaust gas emission flue stack (part of numbered work 2A)	35.0	30.0	–	–	10.0	–
Control room/office/workshop (part of numbered work 2B)	6.0	–	29.0	–	23.0	–
Natural gas receiving station and gas treatment compound (part of numbered work 2B)	3.0		50.0	–	46.0	–
Black start diesel generator (part of numbered work 2B)	5.0	–	13.0	–	5.0	–
Switchyard / banking compound (numbered work 2C)	11.3	–	60	–	60	–
Switchgear Building (part of numbered work 2C)	11.3	–	21.0	–	15.0	–
Gatehouse (part of numbered work 2E)	4.5	–	9.0	–	8.0	–
Demineralised water tank (part of numbered work 2E)	16.0	–	23.0	–	23.0	–
Raw/fire water tank (part of numbered work 2E)	18.0	–	15.0	–	15.0	–
Bat mitigation structure (part of numbered work 2E)	6.0	–	10.0	–	5.0	–

(3) Numbered work 2 of the authorised development is not to commence until details of the layout, scale and external appearance of numbered work 2 have been submitted to and approved by the relevant planning authority in consultation with the Brecon Beacons National Park Authority.

(4) Paragraph (3) is not to apply to any new permanent or temporary means of access to a highway forming part of numbered work 2 which has been approved pursuant to requirement 4.

(5) To the extent that design principles for any numbered work are set out in the design principles statement, that numbered work must be designed substantially in accordance with the relevant design principle set out therein.

(6) The authorised development must be carried out substantially in accordance with the mitigation measures identified in the mitigation commitments register in so far as they relate to the authorised development.