Paragraph 9
Upon signifying his approval or disapproval of the plans the engineer may specify any protective works or other alterations or additions to railway property (whether temporary or permanent) which in his reasonable opinion should be carried out in consequence of the specified works, either before the commencement, during the construction or within 12 months of completion of the specified works, in order to ensure the safety or stability of railway property, the continued safe and efficient operation of railway property or the services of operators using the same (including any relocation of works, apparatus and equipment necessitated by the specified works).
Subject to compliance where applicable with railway operational procedures all such works specified by the engineer under sub-paragraph (1) above as may be agreed by the undertaker or, failing agreement, settled by arbitration, shall be constructed by Railtrack or, if Railtrack so desires, by the undertaker with all reasonable despatch during the period agreed or settled for such works.
In the case of any such works required to be carried out before the commencement of the specified works, the undertaker shall not commence the construction of the specified works until the engineer has notified the undertaker that those works have been completed to his reasonable satisfaction.
In the event of Railtrack not constructing or completing any such works with reasonable despatch as required by sub-paragraph (2) above, in accordance with such programme as may have been agreed with the undertaker or settled by arbitration, Railtrack shall pay compensation to the undertaker for any loss which the undertaker may thereby reasonably sustain.
If any other alterations, either permanent or temporary, to railway property are reasonably necessary during the construction of the specified works or during a period of 12 months after the completion thereof in consequence of the construction of the specified works, the engineer may give notice to the undertaker specifying the alterations or additions to be carried out and sub-paragraph (2) above shall apply to works specified under this sub-paragraph as it applies to works specified under sub-paragraph (1) above.