The Awel y Môr Offshore Wind Farm Order 2023

Retained apparatus: Protection of SP Manweb as Electricity Undertaker

47.—(1) Not less than 56 days before the commencement of any specified works the removal of which has not been required by the undertaker under paragraph 45(2), the undertaker must submit to SP Manweb a plan of the works to be executed and seek from SP Manweb details of the underground extent of their electricity tower foundations.

(2) In relation to specified works which will or may be situated on, over, under or within (i) 15 metres measured in any direction of any apparatus, or (ii) involve embankment works within 15 metres of any apparatus, the plan to be submitted to SP Manweb under sub-paragraph (1) must include a method statement which is consistent with the principles set out in the outline method statement dated 17 October 2022 provided by the undertaker to SP Manweb and show and describe—

(a) the exact position of the specified works;

(b) the level at which the specified works are proposed to be constructed or renewed;

(c) the manner of their construction or renewal;

(d) the position of all apparatus;

(e) by way of detailed drawings, every alteration proposed to be made to or close to any such apparatus; and

(f) any intended maintenance regimes.

(3) In relation to any specified works which will or may be situated on, over, under or within 10 metres of any part of the foundations of an electricity supports or between any two or more adjacent electricity supports which are within the Order limits or within 10 metres of the Order limits, the plan to be submitted under sub-paragraph (1) must include a method statement which, in addition to the matters set out in sub-paragraph (2), must—

(a) describe details of any cable trench design including route, dimensions, clearance to support foundations;

(b) demonstrate that support foundations will not be affected prior to, during and post construction;

(c) describe load bearing capacities of trench supporting structures;

(d) describe details of cable installation methodology including access arrangements, jointing bays and backfill methodology;

(e) provide a written management plan for high voltage hazard during construction and ongoing maintenance of the cable route;

(f) provide written details of the operations and maintenance regime for the cable, including frequency and method of access;

(g) provide an assessment of earth rise potential if reasonably required by SP Manweb’s engineers;

(h) provide evidence that trench collapse resistance and supporting structures bearing capacity are to be designed to 26 tonnes to take the weight of overhead line construction traffic.

(4) The undertaker must not commence any works to which sub-paragraph (2) or (3) applies until SP Manweb has given written approval of the plan so submitted provided that SP Manweb must not unreasonably delay notification of its approval or disapproval.

(5) Any approval of SP Manweb required under sub-paragraph (2)—

(a) may be given subject to reasonable conditions for any purpose mentioned in sub-paragraphs (6) or (8); and,

(b) must not be unreasonably withheld or delayed.

(6) If after the expiry of 56 days SP Manweb has not communicated approval or disapproval, SP Manweb is deemed to have approved the plans as supplied.

(7) In relation to any work requiring the submission of a plan under sub-paragraph (1), SP Manweb may require such modifications to be made to the plans as may be reasonably necessary for the purpose of securing its apparatus against interference or risk of damage or for the purpose of providing or securing proper and convenient means of access to any apparatus and SP Manweb must notify the undertaker of such modifications within a period of 56 days beginning with the date on which the plan required under sub-paragraph (1) has been submitted to SP Manweb.

(8) Works requiring the submission of a plan under sub-paragraph (1) must only be executed in accordance with the plan as approved or as amended from time to time by agreement between the undertaker and SP Manweb and in accordance with such reasonable requirements as may be made in accordance with sub-paragraphs (5), (7), (9) or (10) by SP Manweb for the alteration or otherwise for the protection of the apparatus, or for securing access to it, and SP Manweb will be entitled to watch and inspect the execution of those works.

(9) Where SP Manweb reasonably requires any protective works to be carried out by itself or by the undertaker (whether of a temporary or permanent nature) such protective works, inclusive of any measures or schemes required and approved as part of the plan approved pursuant to this paragraph, must be carried out to SP Manweb’s reasonable satisfaction prior to the commencement of any authorised development (or any relevant part thereof) for which protective works are required and SP Manweb must give 56 days’ notice of such works from the date of submission of a plan pursuant to sub-paragraph (1) or (7) (except in an emergency).

(10) If SP Manweb in accordance with sub-paragraphs (8) or (10) and in consequence of the works proposed by the undertaker, reasonably requires the removal of any apparatus and gives written notice to the undertaker of that requirement, sub-paragraphs (1) to (3) and (7) to (9) apply as if the removal of the apparatus had been required by the undertaker under paragraph 45(2).

(11) Nothing in this paragraph precludes the undertaker from submitting at any time or from time to time, but in no case less than 56 days before commencing the execution of the authorised development, a new plan, instead of the plan previously submitted, and having done so the provisions of this paragraph must apply to and in respect of the new plan.

(12) The undertaker must not be required to comply with sub-paragraph (1) where it needs to carry out emergency works as defined in the 1991 Act but in that case it must give to the SP Manweb notice as soon as is reasonably practicable and a plan of those works and must—

(a) comply with sub-paragraphs (7), (8) and (9) insofar as is reasonably practicable in the circumstances; and

(b) comply with sub-paragraph (13) at all times.

(13) At all times when carrying out any works authorised under the Order, the undertaker must comply with statutory requirements and guidelines for development near overhead lines EN43-8 and HSE’s guidance note 6 “Avoidance of Danger from Overhead Lines” in relation to any apparatus and aligning with SP Manweb guidelines.