London Underground Rolling Stock Saloon Lighting Feasibility Questionnaire
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London Underground Rolling Stock Saloon Lighting Feasibility Questionnaire
This Questionnaire forms first part of a Market Assessment Exercise, and is not a call for
tenders or a pre-qualification exercise.
The information within this document has been generated solely for market analysis
purposes and (depending on the information received from organisations and/or individuals
that choose to respond) may not reflect the information ultimately presented in any future
calls to tender.1. Introduction
Lighting across the London Underground is used to make safe and functional
environments; with maintenance requirements and Whole Life Costs (WLCs) often
dictating the design, choice and application of light fittings and lamps.
Lighting must be functional, create a feeling of comfort – but most importantly –
must be reliable to ensure the public are kept safe.
In essence, good lighting across London’s transport network should not only help it
to function well, but also improve our customer’s experience.
2. Background
Transport for London (TfL) is now installing more & more energy efficient and long life
light fittings and lamps; and this year – 2015 – Transport for London is undertaking a
feasibility study to assess, understand and build a case for the installation of more
advanced lighting technologies within the saloon of London Underground train fleets:
• Central Line – 85 trains (680 carriages)
• Waterloo & City – 5 trains (20 carriages)
• Bakerloo Line – 36 trains (252 carriages)
• Piccadilly Line – 86 trains (516 carriages)
The ~1400 train carriages within the scope of this exercise are currently lit with
fluorescent tubes of various lengths, configurations and electrical suppliers (making
use of more than 40,000 light fittings and lamps).
Through the use of more advanced lighting technologies, the London Underground
aims to:
• Improve the experience of its customers by improving the ambience within
train fleets;
• Lower the energy costs associated with lighting train saloons;
• Reduce the level of heat generated by saloon lighting; and,
• Reduce the maintenance costs (e.g. replacement & cleaning) associated with
saloon lighting.
The questionnaire (which can be found on the final page of this document) has been
created to identify lighting manufacturers that would be interested in creating
bespoke light fitting(s) that could replace the current fittings within the saloons of the
aforementioned train fleets.3. Outline Requirements
It is envisaged that any new lighting technology fitted within the carriages of London Underground trains will be bespoke in nature
meeting the outline requirements stated below (where the Standards mentioned can be found here):
Requirements What are expecting from new technology?
Design objective is to fit within the existing space envelope and to use the existing mechanical fixings where
Mechanical
possible. Match existing interior colours. Looking for integrated light diffuser panels (to negate the need for internal
design
diffuser cleaning). The design shall comply with Standard for Rolling Stock S1180 – with reference to 3.12.2
Design must be compliant with G6621 electronic equipment. Unit to be supplied with a flying lead and multi-pole
connector. Note that the DC is a negative feed with respect to a positive earth.
Electrical design Typical operating voltages:
• DC operating Voltage nominal -52V (range -32V to -63V)
• AC operating Voltage nominal 115V 850Hz (range to be confirmed)
Operating Shall comply with National and International standards for electronic systems on rolling stock as outlined in LU’s
environment General Specification G6621 (e.g. operating temperature range, noise and vibration).
Fire compliance
Materials to be fire resistant and pass emissions. Compliant with LU Standard 1-085.
standardFor cleaning the enclosures are to be hermetically sealed against dust and water ingress such that there is no routine
Cleaning
requirement for internal cleaning (external cleaning only). Consideration to anti-graffiti surfaces and gum removal.
Resilience to customer damage (impact) and reduce risk of injury from breakages etc.
Passenger and
Fixing security (tamper proof) to consider captive fasteners.
maintenance
environment Panel weights to be comparable with the existing setup and ideally be within the limit for manual handling
regulations.
All lighting scheme designs will be subject to the LU assurance with full documentation supplied. They will need to
Approvals
be trialled / prototyped first and may require passenger survey feedback as part of approvals.
Installation &
Consideration for efficient installation and future replacement.
replacement4. Who should respond?
Responses are invited from any part of the lighting market that would be able to
develop bespoke lighting technologies/solutions/products that would fulfil the
outline requirements outlined in Section 3 (above). These could include – but may not
be limited to – lighting developers, manufacturers, suppliers and designers.
We would like to involve the full range of companies – from multi-nationals to Small
& Medium Sized Enterprises (SMEs).
5. Making a response
All supporting information and documentation can be found on the PRO-LITE website
(www.prolitepartnership.eu/publications).
All completed questionnaires must be sent to
(L UR olling S toc k @T fL .g ov .uk )
by noon on the 30th August 2015.
PLEASE NOTE – Speculative emails, emails containing brochures, catalogues and/or
other forms of documentation that have not been requested will not be considered
as part of this exercise.
6. Next Steps
Depending on the responses received, the London Underground may invite lighting
manufacturers to TfL offices for more in-depth conversations.Questionnaire
Name of Company:
Contact Name:
Position:
Contact Email Address:
General Questions P leas e tic k relev ant box
Y es No
Q1 Does your company have experience in providing LED lighting solutions
for use in rolling stock? ☐ ☐
Q2 Are you able to provide a solution and support for up to 20 years? ☐ ☐
Q3 Are you able to provide a reliable solution which consistently illuminates
for 80,000 hrs (≈10 years)? ☐ ☐
Q4 Are you willing to develop a technology for which the LU will own or share
the Intellectual Property Rights? ☐ ☐
Engineering Questions
The standards referred to below can be found at
P leas e tic k relev ant box
www.prolitepartnership.eu/publications
Y es No
Q5 Are you able to comply with the LU standard for rolling stock (S1180)? ☐ ☐
Q6 Are you able to comply with the LU standard for rolling stock (1-085)? ☐ ☐
Q7 Are you able to comply with the LU standard for rolling stock (G6621)? ☐ ☐
Q8 Are you able to design and develop a solution which ensures an even
distribution of light (e.g. no visible spotting at passenger eye level)? ☐ ☐
Q9 Are you able to tailor a solution which fits into the existing space envelope
within train saloons with all drive electronics integral to an LED panel? ☐ ☐
Q10 Are you able to design and develop a solution which is hermetically sealed
against dust ingress and requires only surface cleaning? ☐ ☐
Important: If 'Yes' to any of the above, please include concise evidence or examples when you return this
questionnaire.
Next: Please return completed forms and supporting evidence to: LURollingStock@TfL.gov.uk
by noon on 30 th A ug us t 2015.You can also read
