Technical Assurance and Integration

Crossrail poses significant challenges when it comes to integrating the various systems that make up the end-to-end railway, and the organisations responsible for delivering them, due to the complex nature of the scheme.  These challenges include connecting a new metro central service with suburban rail services on the Great Western and Great Eastern surface routes, seamless operation across three different signaling systems, and managing the scale of the project with stations, tunnels, systems and rolling stock in my multiple contracts, delivered by many different parties, necessitating meticulous interface management.

The Technical Assurance and Integration team was set up to manage an integration approach on the overall (collective) performance of the railway organised around the “4 pillars”; Collectively Safe; Collectively Operable; Collectively Maintainable; Collectively Performs. This topic area includes papers that describe the railway integration approach at Crossrail, how interfaces were managed, and how the requirements were assured throughout design, build, and testing and commissioning.

TECHNICAL ASSURANCE AND INTEGRATION DOCUMENTS

Summary Publication date Document Type

The Railway Integration Approach at Crossrail

Topic area: Technical Assurance and Integration

Crossrail poses significant integration challenges due to the complex nature of the scheme. This document provides an overview of the approach employed at Crossrail to define the various dimensions of “Railway Integration” and a high level summary of the processes and techniques used to manage them. It will be usef...

02/08/2018 Technical Paper

Client Advice and Technical Services to Chief Engineer’s Group

Topic area: Technical Assurance and Integration

Between early 2013 and 2018, CEG worked with Crossrail’s programme delivery function and station contractors on station design development and progressive acceptance that requirements were met. In addition, they led the performance verification programme for C100 designs. C100 provided support in both areas of work a...

09/07/2018 Technical Paper

Effective Reliability, Availability, Maintainability (RAM) and Safety (S), Principles and Guidelines for Large Subsurface Metro and Main Line Projects

Topic area: Technical Assurance and Integration

This paper offers support and guidance on a major infrastructure subsurface railway project, to select and undertake an effective reliability, availability and maintainability and safety (RAMS) strategy. RAMS which forms part of systems engineering is an essential discipline and integrated in most railway undertakings....

09/07/2018 Technical Paper

Integration, Testing and Commissioning at Crossrail

Topic area: Technical Assurance and Integration

Crossrail’s Central Operating Section is characterised by high performance requirements of a metro system with high specified train service throughput. This is realised via multiple interdependent electronic systems which control the movement of trains together with station systems, traction and auxiliary power suppl...

09/07/2018 Technical Paper

Maintenance and Cost Analysis on Major Subsurface Rail Projects – Crossrail

Topic area: Technical Assurance and Integration

The purpose of this case paper is to highlight the maintenance and cost analysis principles on a mega subsurface metro railway project. The paper identifies how crossrail delivered the maintenance through the project life cycle. Its objectives are also to illustrate some of the technical and programme challenges on the...

09/07/2018 Technical Paper

Integration tests for Crossrail Station Services

Topic area: Technical Assurance and Integration

This paper describes the integration tests implemented for Crossrail Station Services. It describes a set of Test Scenarios, which enable through their completion to provide a consistent and effective schema, to ensure Crossrail works in an integrated manner. The scenarios were design to test the systems under numerous...

09/07/2018 Technical Paper

Interface Management Procedure

Topic area: Technical Assurance and Integration

This procedure addressed interface management undertaken on the design and engineering of the Crossrail Central Section. It applied to all the systems, sub-systems, components and interfaces that made up the Crossrail Central Section, including all civil, and infrastructure elements plus interfaces to those elements lo...

09/07/2018 Good Practice Document

Compliance of Technical Assurance Requirements for MEP Installations at Crossrail Stations, Shafts and Portals

Topic area: Mechanical, Electrical & Public Health

This paper highlights the approach adopted by Crossrail to demonstrate compliance with technical assurance requirements for MEP installations at stations, shafts and portals. The common approach has taken into consideration the diverse nature of design and complexity of installation at different work sites. The documen...

30/09/2017 Technical Paper

Systems Architecture Models in Crossrail Design and Delivery – Client’s perspective

Topic area: Civil Engineering

The architecture of a system can be expressed in conceptual models that represent a system of interest in its environment. It can be framed and described in different views for the perspective of specific system concerns. A system architecture diagram in turn is often used as a work product to communicate these views....

30/09/2017 Technical Paper