Paragraph 23 High pressure gas main: protectionI1

Not less than 42 days before commencing the execution of any works authorised by this Order which will or may be situated on, over or under the high pressure gas main, or within 3 metres respectively from the high pressure gas main measured in any direction, or which involve embankment works within 3 metres of the high pressure gas main, the undertaker must submit to National Grid detailed plans describing—

The undertaker must not commence the construction or renewal of any works to which sub-paragraph (1) applies until National Grid has given written approval of the plans so submitted.

Any approval of National Grid under sub-paragraph (2)—

In relation to a work to which sub-paragraph (1) applies, National Grid may require such modifications to be made to the plans as may be reasonably necessary for the purpose of securing its system against interference or risk of damage or for the purpose of providing or securing proper and convenient means of access to the high pressure gas main.

Works to which this paragraph applies must be executed only in accordance with—

and National Grid is entitled to watch and inspect the execution of those works.

If in consequence of the works proposed by the undertaker National Grid reasonably requires the removal of the high pressure gas main and gives written notice to the undertaker of that requirement, paragraphs 10 to 14 apply as if the removal of the apparatus had been required by the undertaker under paragraph 13(2).

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, instead of the plan, previously submitted, and having done so the provisions of this paragraph apply to and in respect of the new plan.

The undertaker is not required to comply with sub-paragraph (1) where it needs to carry out emergency works but in that case it must give to National Grid notice as soon as is reasonably practicable and a plan, of those works subsequently and must comply with—

At all times when carrying out any works authorised under this paragraph the undertaker must comply with National Grid’s policies for safe working in proximity to gas apparatus “Specification for safe working in the vicinity of National Grid high pressure gas pipelines and associated installations requirements for third parties T/SP/SSW27” and HSE’s “HS(G)47 Avoiding danger from underground services”.