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9.—(1) Not less than 56 days before the commencement of any authorised development that is near to, or will or may affect, any apparatus the removal of which has not been required by the undertaker under paragraph 7(2) or otherwise and to which paragraph or applies, the undertaker must submit to National Grid a plan and seek from National Grid details of the underground extent of their electricity tower foundations.
(2) In relation to 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 National Grid under sub-paragraph (1) must include a method statement and describe—
(a)the exact position of the works;
(b)the level at which these are proposed to be constructed or renewed;
(c)the manner of their construction or renewal including details of excavation, positioning of plant;
(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;
(f)any intended maintenance regimes; and
(g)an assessment of risks of rise of earth issues.
(3) In relation to any works which will or may be situated on, over, under or within 10 metres of any part of the foundations of an electricity tower or between any two or more electricity towers, the plan to be submitted under sub-paragraph (1) must in addition to the matters set out in sub-paragraph include a method statement describing—
(a)details of any cable trench design including route, dimensions, clearance to pylon foundations;
(b)demonstration that pylon foundations will not be affected prior to, during and post construction;
(c)details of load bearing capacities of trenches;
(d)details of cable installation methodology including access arrangements, jointing bays and backfill methodology;
(e)a written management plan for high voltage hazard during construction and ongoing maintenance of the cable route;
(f)written details of the operations and maintenance regime for the cable, including frequency and method of access;
(g)assessment of earth rise potential if reasonably required by the National Grid’s engineers; and
(h)evidence that trench bearing capacity is 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-paragraphs (1), , or apply until National Grid has given written approval of the plan so submitted.
(5) Any approval of National Grid required under sub-paragraphs (1), , or —
(a)may be given subject to reasonable conditions for any purpose mentioned in sub-paragraphs or ; and
(b)must not be unreasonably withheld.
(6) In relation to a work to which sub-paragraphs (1) , or apply, National Grid 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.
(7) Works to which this paragraph applies must only be executed in accordance with the plan, submitted under sub-paragraph (1) or as relevant sub-paragraphs , or as approved or as amended from time to time by agreement between the undertaker and National Grid and in accordance with such reasonable requirements as may be made in accordance with sub-paragraphs , , and/or by National Grid for the alteration or otherwise for the protection of the apparatus, or for securing access to it, and National Grid will be entitled to watch and inspect the execution of those works.
(8) Where National Grid requires any protective works to be carried out either 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 National Grid’s satisfaction prior to the commencement of any authorised development (or any relevant part thereof) to which sub-paragraph (1) applies and National Grid must give 56 days’ notice of such works from the date of submission of a plan in line with sub-paragraphs (1), , or (except in an emergency).
(9) If National Grid in accordance with sub-paragraphs or 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 and to shall apply as if the removal of the apparatus had been required by the undertaker under paragraph 7(2).
(10) Nothing in this paragraph shall preclude 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 shall apply to and in respect of the new plan.
(11) The undertaker will 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 National Grid notice as soon as is reasonably practicable and a plan of those works and must—
(a)comply with sub-paragraphs , and insofar as is reasonably practicable in the circumstances; and
(b)comply with sub-paragraph at all times.
(12) At all times when carrying out any works authorised under the Order, the undertaker must comply with National Grid’s policies for development near overhead lines ENA TA 43-8 and the Health and Safety Executive’s guidance note 6 “Avoidance of Danger from Overhead Lines”.
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