7.—(1) Not less than 28 days before commencing the execution of any works of the type referred to in paragraph 5(2) that are near to, or will or may affect, any apparatus the removal of which has not been required by the undertaker under that sub-paragraph, the undertaker must submit to the affected undertaker in question a plan, section and description of the works to be executed.
(2) The works must be executed only in accordance with the plan, section and description submitted under sub-paragraph (1) and with such reasonable requirements as may be made in accordance with sub-paragraph (3) by the affected undertaker for the alteration or otherwise for the protection of the apparatus, or for securing access to it; and the affected undertaker is entitled to watch and inspect the execution of the works.
(3) Any requirements made by an affected undertaker under sub-paragraph (2) must be made within a period of 21 days beginning with the date on which a plan, section and description under sub-paragraph (1) are submitted to it.
(4) If an affected undertaker, in accordance with sub-paragraph (3) 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, paragraphs 5 and 6 apply as if the removal of the apparatus had been required by the undertaker under paragraph 5(2).
(5) Nothing in this paragraph precludes the undertaker from submitting at any time or from time to time, but in no case less than 28 days before commencing the execution of any works, a new plan, section and description instead of the plan, section and description previously submitted, and the undertaker having done so the provisions of this paragraph apply to and in respect of the new plan, section and description.
(6) The undertaker is not required to comply with sub-paragraph (1) in a case of emergency, but in that case it must give to the affected undertaker in question notice as soon as is reasonably practicable and a plan, section and description of the works as soon as reasonably practicable subsequently and must comply with sub-paragraph (2) in so far as is reasonably practicable in the circumstances.