Network Rail Requirements (formerly NR/L1/INI/CP0095)
|Publication Date:||2 September 2017|
This standard specifies the principles to be adopted for, and the roles and responsibilities associated with, requirements development and management.
This standard is part of the P3M Framework and relates to NR/L1/INI/P3M/100. It applies to all projects and programmes that require Investment Authority, as defined within IR01, Investment Regulations, and:
a) enhance or renew the operational railway; and / or
b) are carried out in a high street environment, e.g. car park developments
NOTE 1: IR01, Investment Regulations, is available on Connect (IR01 is an internal document available to staff within Network Rail only):
NOTE 2: See the following link for definitions of Projects, Programmes, and Portfolios in Network Rail.
NOTE 3: For external entities, please request copies of these documents by emailing:
The purpose of this standard is to further Network Rail's commitment to embedding consistent requirements practice across its business; not only to improve project and programme outcomes, but to reduce costs, and to meet client expectations, legislative governance and assurance requirements.
An enforceable requirements standard enables the business to manage and reduce the risks associated with:
a) delivering solutions based on incomplete, unverifiable, erroneous or missing requirements;
b) the inability to demonstrate/assure project requirements sets for completeness;
c) the inability to control scope, time and cost;
d) the inability to demonstrate compliance with current legislations and standards; and
e) the lack of internal and external stakeholders' confidence in our ability to deliver infrastructure change projects to meet client requirements.