This section applies to operational land—
Subject to subsection (4) below, before undertaking any works under section 29(2) above on land to which this section applies a local authority shall serve notice that they propose to undertake works under that section in connection with the building—
A notice under subsection (2) above shall specify the works which the local authority propose to undertake.
A local authority need not give any such notice where they consider that it is necessary to undertake works immediately in order to secure a building against unauthorised entry or to prevent it from becoming a danger to public health.
A local authority shall not undertake works specified in a notice under subsection (2) above before the expiry of the period of 48 hours from the service of the notice on the Board or the statutory undertakers.
In carrying out any works under section 29(2) above on land to which this section applies a local authority shall comply with any reasonable requirement which the Board or, as the case may be, the statutory undertakers may impose for the protection or safety of their undertaking.
In this section "operational land" means, in relation to the Board or the statutory undertakers—
not being land which, in respect of its nature and situation, is comparable rather with land in general than with land which is used, or in which interests are held, for the purpose of carrying on such undertakings.