scope:

This Standard defines requirements for the regulation and control of the conditions under which assets may be permitted to remain in use for a pre-determined period following the discovery or introduction of non-compliance with Standards.

This Standard applies to assets in most asset groups (for exceptions see clauses 2.6 and 3.1.1). It provides a process for the management of all non-compliance discovered or introduced by whatever means and which will be made compliant in accordance with the TANC Management Plan.

The process described in this Standard is not an alternative to other mandatory Standards or legal requirements which preclude or specify prescribed circumstances under which assets may remain in service for a defined period pending the rectification of specified defects and which provide for the monitoring and signing off of the rectification works. The interface between such Standards and this Standard is described in greater detail in Section 3.

This Standard does not cover permanent / indefinite, planned or known noncompliance with Standards. If non-compliance is discovered or introduced and which is expected to continue beyond the non-compliance close-out date identified in the TANC Management Plan an application for a Concession must be made in accordance with Category 1 Standard 1-641 (formerly 2-05304-010).

This Standard does not apply where the non-compliance is the result of the existing physical design of an asset at the start date of the PPP Contract.

This standard shall not be used to allow non-compliant assets to remain in use where this would put LU or Infraco in breach of any regulation, or where there are specific prohibitions in LU standards. For the avoidance of doubt, this standard shall not be used in the heavily regulated Lifts and Escalators (L&E) asset group where the overriding obligation to be legally compliant renders the TANC process inappropriate.

This standard applies to Infracos and their Suppliers only.

Purpose

This Category 1 Standard describes the procedure for permitting non-compliant assets to temporarily remain in service and provides the appropriate compliance documentation.

The aim of this Standard is to ensure that all discovered or introduced non- compliant assets that are allowed to temporarily remain in use are covered by a Temporary Approved Non-Compliance (TANC) Management Plan. The TANC Management Plan (described in clause 3.2) ensures that all tolerable safety risk is assessed and managed through timely and appropriate controls / mitigation at a level that is as low as reasonably practicable.