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Sample Assessment Questions
IRSE Licensing Scheme
Issue 3.0
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 ii
Invensys Rail Pty Ltd ABN 78 000 102 483
Locked Bag 66
179-185 Normanby Rd
South Melbourne
Victoria 3205
Australia
T +61 3 9233 8888
F +61 3 9233 8777
W www.invensysrail.com
L:\T&T\IRSE Working\Questions\Sample Assessment Questions_3.0.Docx
Sample Assessment Questions IRSE Licensing Scheme
Sample Assessment Questions
IRSE Licensing Scheme
Issue: 3.0
Issue Date: 6th May 2010
Reference: Sample Assessment Questions_3.0.docx
Prepared: Leon Clark Technology & Training
Change History
Issue Date Comment Changed Checked Approved
1.0 12-Jun-1998 First publication LC WMcD WMcD
2.0 18-Apr-08 New categories added, New template LC DC TD
3.0 6-May-10 Update to Invensys style FH LC LC
Copyright This document is protected by copyright and the information contained herein is confidential. The document may not be copied and the information herein may not be disclosed except by the written permission of, and in a manner permitted by the proprietors, Invensys Rail Pty Ltd, 2010.
Issue: 3.0 6th May 2010 iii
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 iv
Contents
Category Questions 1
1.1.100 Asst Designer (S) 1
1.1.110 Designer (S) 4
1.1.130 Principles Designer (S) 7
1.1.140 Design Manager (S) 9
1.1.150C Signalling Designer 10
1.1.150D Signalling Principles Designer 11
1.2.100 Asst Installer (S) 15
1.2.110 Installer (S) 16
1.2.130 Installation Team Leader (S) 17
1.2.140 Installation Manager (S) 18
1.2.150 Test Assistant (S) 19
1.2.180 Principles Tester (S) 20
1.2.190 Tester in Charge (S) 22
1.3.160 Signalling Tester (S) 23
1.3.160 Signalling Tester (S) 24
1.3.180 Signalling Principles Tester 25
1.4.110 Maintainer (S) 26
1.4.130 Maintenance Team Leader (S) 27
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 1 of 27
Category Questions
1.1.100 Asst Designer (S)
Question Assessor
If you are asked to a location circuits design for an SRA scheme, what
information/document do you think you will need?
Mark Chiu
How are the loop closed and the design verified to have used the latest
and relevant information?
Craig Ackroyd
What would you do when you are designing/modifying a TRM allocation
and you found an error in the track plan?
Mark Chiu
How would you identify the requirements of a given design allocated to
you and how do you know your design is what your supervisor/client
wants?
Mark Chiu
If you are asked to design SSI location circuits, what type of circuits
would you need to produce?
Mark Chiu
Where do you find standard circuits and equipment for a NSW design? Craig Ackroyd
When a non-standard requirement is identified in your design, what will
you do?
Mark Chiu
During the design life up to commissioning, what must you do to each
design change and why?
Craig Ackroyd
While designing location circuits, you found a possible error in the track
plan that an incorrect frequency is used in one of the track circuits, what
will you do?
Mark Chiu
What standard QA document do you need to refer to for designing
circuits for and RSA scheme and a QR scheme.
Mark Chiu
What equipment documentation exists and where? How are WSA
drawing numbers allocated and records of these kept?
Craig Ackroyd
What other QA document do you need? If you found an error (or some
information is outdated) in a QA document (work instruction) what
would you do?
Mark Chiu
How do you know all your work is completed within the limits of your
own authority? What resources do you have to carry out your design
task?
Mark Chiu
What would be regarded as a safe distance between following trains? UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 2 of 27
How would you depict a three aspect signal on a track plan? UK
Describe briefly how you would ensure that two opposing signals, using
relay interlocking, are not cleared simultaneously onto the same route?
UK
What, as an Asst. Designer, would you regard as the limit of your
responsibility?
UK
Draw the symbol for a front contact as used in a relay interlocking and
Westrace data ladder diagrams.
UK
What information is shown on the Control Sheet? UK
Give two examples of the type of information reflected on a Track plan. UK
What information is shown on Aspect / Code sequence charts? UK
On the items listed on the CAC do you understand what they are?
Explain? Where would you find each one of these?
Craig Ackroyd
What is a Bonding plan used for? UK
Explain very briefly how you would go about preparing the design for a
WESTRACE interlocking.
UK
Where would you get the terminal connection details for connecting to a
WESTRACE protection and filter module?
UK
What areas of the Central Line do we have bonding plans for? UK
If the detection fails on a set of points in a cleared route, what should
the signalling do?
UK
Why are double cut circuits used to feed external equipment? UK
What determines between the use of dedicated or common fusing. UK
If the detection fails on a set of points in a cleared route, what should
the signalling do?
UK
What code should be applied to the track circuit behind a train? UK
If a trainstop fails to lower what should the signalling do. UK
What is an overlap? UK
What does route locking prevent? UK
Describe approach locking. UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 3 of 27
Describe what is meant by approach release. UK
Describe the meaning of interlocking when used in railway signalling. UK
Describe interlocking between signals. UK
Why is interlocking between signals and points provided? UK
Describe what is meant by flank protection. UK
Describe what is meant by back locking. UK
Why are double cut circuits used to feed external equipment? UK
Why are fuses used on the signalling equipment room termination with
all outside equipment in electrified areas?
UK
Why is multi-strand wire used in the railway signalling environment? UK
Name a few alternative places you would get relevant information from. K Allen
Why do we provide analysis of terminals and contacts? K Allen
What points are required to be locked in the sketch attached and what
way for main route 14 16?
K Allen
What or who would be contacted if the scope of work issued was
misleading?
K Allen
State what specific document covers TPWS materials. K Allen
Why do we record durations and start/finish days of jobs? K Allen
Describe the letters used in:
a) QNAI
b) QBAI
K Allen
What was the main reason for TPWS site surveys? K Allen
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 4 of 27
1.1.110 Designer (S)
Question Assessor
What documents do you consider necessary before you start
designs?
Phillip Baker
Presented candidate with track circuit:
What signals required at locking level? When the route reverses what does it do to opposing route
and points in route and overlap?
How is this locking maintained after the train has passed the signal?
How is the route protected if the signal is replaced with approaching train?
Philip Baker
If there are documents missing, or, the information in them
conflicts what would you do?
Philip Baker
In the evidence for this criterion, the design is signed off by JT,
although the work experience is signed off as this being done by
Richard. Why is this?
Philip Baker
What happens if you do not have a standard cell for a particular
piece of equipment?
Philip Baker
What happens if during design you need an extra function from
an area being designed by another person?
W. Blackmore
In your summary of evidence (page 7) you mentioned production
of care plans in accordance with company standards. Please
specify the work instruction and QR standards.
Philip Baker
What Quality Procedures do apply to the design process? Steven Barker
How are faults in data or interlocking circuits identified and what
are the procedures for correcting these faults.
Stuart Ferguson
How are faults in loc designs or cable plans identified and what is
the method for correcting these faults?
W. Blackmore
Explain how you personally ensure the resources under your
control are controlled monitored and accurately recorded
especially with respect to time.
Philip Baker
If an error was found in your design during testing what action
would you take?
Philip Baker
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 5 of 27
How would you go about rectifying a fault? Philip Baker
If there are two versions of a document say 711.3.0 and 3.3
which version do you use & why?
Philip Baker
On Arncliff, when the blues were returned by the client, what
action was taken?
Philip Baker
If an error was discovered in two separate projects you are
working on what action would you take?
Philip Baker
When designing a signalling system, what would be regarded as a
safe distance between following trains?
UK
Provide the number and title of the WSL quality standard for
Signalling design.
UK
What would you do if you noticed an error in a design or scheme
plan?
UK
Describe briefly any TWO principles that should generally be
applied whilst designing a signalling interlocking.
UK
What do the following abbreviations generally mean in a
signalling design? RLR; NLPR; HR; NKPR
UK
What function does a control table perform? UK
When designing circuit modification for a commissioned room
what considerations should you make.
UK
What code should be applied to the track circuit behind a train? UK
If a trainstop fails to lower what should the signalling do. UK
Describe what is meant by approach release. UK
Discuss briefly the criteria to be considered when commencing
the design of a signalling layout?
UK
How would you determine the design principles to be used on a
signalling scheme?
UK
What information would you expect to find on an Aspect / Code
sequence chart?
UK
Give THREE examples of the type of information you would
expect to find on a control sheet.
UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 6 of 27
Explain briefly the Design Control Procedure currently in use by
WSL.
UK
What does the code charts for each station show? UK
What document would you use to determine the correct EPROM
to be used for the data on a WESTRACE VLM card?
UK
Describe interlocking between signals. UK
Why is multi-strand wire used in the railway signalling
environment?
UK
What determines between the use of dedicated or common
fusing.
UK
What very important criterion is satisfied through the design /
checking procedure?
UK
List some of the standards that you would adopt if required to
pick up functions from an existing Relay room.
UK
List three implications of changes made during the design phase. UK
When checking your design, what would you regard as your most
valuable resource?
UK
List three of the principle design documents used to ensure that a
design complies with company / project standards.
UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 7 of 27
1.1.130 Principles Designer (S)
Question Assessor
Where are relevant documents and information specified and
found?
CA
What standards are specified and where found? CA
What principles were used in the jobs listed in Appendix 7? CA
How are design changes communicated to the rest of design
team?
CA
What are the companys QA requirements and where are they
kept?
CA
What reviews are carried out on a design and how are they
recorded?
CA
What Quality Procedures did you follow with respect to the
example given in evidence?
W. D. Blackmore
How is your role on a project documented? CA
How is your time recorded? How are target dates defined? CA
How are reported defects from the client handled? CA
How are design changes from site handled? CA
How are internal checking comments handled? CA
In what ways are design changes agreed to by the client? CA
How are design changes agreed to by the Supervisor of Project
Manager?
CA
On what scheme did this occur and what records would there be
of this?
CA
Discuss briefly the criteria to be considered when commencing
the design of a signalling layout?
UK
How would you determine the design principles to be used on a
signalling scheme?
UK
What information would you expect to find on an Aspect / Code
sequence chart?
UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 8 of 27
Give THREE examples of the type of information you would
expect to find on a control sheet.
UK
Explain briefly the Design Control Procedure currently in use by
WSL.
UK
What does the code charts for each station show? UK
What document would you use to determine the correct EPROM
to be used for the data on a WESTRACE VLM card?
UK
Describe interlocking between signals. UK
Why is multi-strand wire used in the railway signalling
environment?
UK
What determines between the use of dedicated or common
fusing.
UK
What very important criterion is satisfied through the design /
checking procedure?
UK
List some of the standards that you would adopt if required to
pick up functions from an existing Relay room.
UK
List three implications of changes made during the design phase. UK
When checking your design, what would you regard as your most
valuable resource?
UK
List three of the principle design documents used to ensure that a
design complies with company / project standards.
UK
A route is set from 37. When is locking released with train in
route on:
a) 101 points;
b) 102 points;
c) 103 points; and
d) 104 points.
S. Barker
Is locking required between 7 and 5 signals? S. Barker
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 9 of 27
1.1.140 Design Manager (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 10 of 27
1.1.150C Signalling Designer
Question Assessor
What does the term swinging overlap mean? R Barker
How is the signal aspect maintained whilst the O/L swings? R Barker
Why do we apply approach clearing to some signals? R Barker
What is a repeater signal and when or where would it be
positioned?
R Barker
Is a repeater signal different to a distant signal? R Barker
What is the difference between a unit lever and a route setting
control panel?
R Barker
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 11 of 27
1.1.150D Signalling Principles Designer
Question Assessor
LUL principles: What indication is given that a trainstop fails to
drive down?
S Barker
LUL principles:
a) What is Berth Track Diversity and why is it provided?
b) How is it provided? (3 methods)
S Barker
LUL principles: How do we prove the trainstop has normalised? S Barker
LUL principles: Draw locking charts for the following
a) 1 Locks 2
b) 1 Locks 2 N & R
S Barker
LUL principles: What is backlogging? S Barker
LUL principles: With the aid of diagrams show examples of back
log release by:
a) ALR only
b) ALR and Delta
c) ALR and JR
d) ALR and Delta JR
S Barker
LUL principles: What is Hand Over Locking and, with the aid of
a diagram, when is it applied?
S Barker
SRT principles: How far in rear of a signal is the comprehensive
approach locking?
S Barker
SRT principles: What is Anti-Preselection and why is it
provided?
S Barker
SRT principles: Any route stick (USR) that locks point normal and
reverse have a WZR of the points around the USRs primary
function. Why? In such cases how do the points become locked
and when does the USR drop?
S Barker
SRT principles: With the aid of a drawing describe Indirect
locking?
S Barker
SRT principles: With the aid of a drawing show how Conditional
Locking may be applied to a crossover. What is Counter
Conditional Locking?
S Barker
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 12 of 27
SRT principles: How far in rear of a signal is the comprehensive
approach locking?
S Barker
SRT principles: What is Anti-Preselection and why is it
provided?
S Barker
SRT principles: Any route stick (USR) that locks point normal and
reverse have a WZR of the points around the USRs primary
function. Why? In such cases how do the points become locked
and when does the USR drop?
S Barker
SRT principles: With the aid of a drawing describe Indirect
locking?
S Barker
SRT principles: With the aid of a drawing show how Conditional
Locking may be applied to a crossover. What is Counter
Conditional Locking?
S Barker
How do we know when templates from cab-i-net are not correct? B Bedford
What are your considerations when being allocated a task or
allocating tasks?
B Bedford
How do we maintain design records & confidentiality? B Bedford
Provide some examples of signals requiring non standard
installation.
B Bedford
You find that a template issued for use is not correct. What do
you do?
B Bedford
Identify some of the various risks associated with the current
design you are performing for the Detailed Design of Harrow on
the Hill.
B Bedford
What is the measure of how .. sufficiently and clearly detailed
design is?
B Bedford
What procedure is in place to minimise risk of lost work in the
event of a LAN failure?
B Bedford
What is done with WIP copies of Design Checked Copies of Design
and Design Calculations?
B Bedford
A change has been identified during site testing. How should the
change be implemented?
B Bedford
What would be some examples of looking for an alternative
solution to a design change?
B Bedford
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 13 of 27
Can you describe how you have been calculating overlaps on the
PPP project?
S Barker
Can you tell me when you may need to reduce the O/L length and
what are the rules?
S Barker
Can you describe headways? S Barker
Show an example. What is RORI (LUL) S Barker
How do you ensure design inputs are current and applicable to
the design task?
B Bedford
Why did you request performance curves and gradient data when
you were performing scheme design?
B Bedford
By way of a diagram show what is required for Train Away
control?
B Bedford
What control measures could we use to control the speed of a
train through a junction?
B Bedford
With reference to the diagram @ back, identify a potential risk
and suggest a possible solution? Assume FULL sectional route
release.
B Bedford
What are some methods of securely storing design? B Bedford
Who do we monitor changes in design scope of work? B Bedford
Can you describe how you have been calculating overlaps on the
PPP project?
S Barker
Can you tell me when you may need to reduce the O/L length and
what are the rules?
S Barker
Can you describe headways? S Barker
Show an example. What is RORI (LUL) S Barker
What sources are used to obtain design inputs that are current? B Bedford
In addition to design specifications, what other references should
be used for Scheme Design?
B Bedford
If asked to perform a new design task, what steps would you take
to allow you to carry out the task?
B Bedford
How is security enforced and a high level of protection provided
to design data?
B Bedford
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 14 of 27
How do we ensure that current versions of design inputs are
being used?
B Bedford
How would we address the need for a signal to be positioned in a
non standard position?
B Bedford
How can standards and methods be maintained between design
teams?
B Bedford
Provide an example of a hazardous situation and solution for:
a) signal placement
b) installation of comms, Equipment cabling.
B Bedford
A site survey reveals that an IRJ must move. What are your
considerations when moving the Test Boundary?
B Bedford
How are you able to determine your completion targets for design
tasks?
B Bedford
What procedure is in place to ensure minimal work is lost in the
event of a LAN failure?
B Bedford
Following the issue of Approved Design, what is done with
WIP/Check Copies and Design Calculations?
B Bedford
A change has been identified during site testing. How should the
change be implemented?
B Bedford
You encounter a problem that you are aware has been
encountered previously. What do you do?
B Bedford
LUL principle What indication is (aspect) given to the train
driver when the trainstop fails to drive down?
S Barker
Queensland Rail Typically when is a flashing yellow aspect
displayed in CTC areas?
S Barker
SRT when would you sequence points movements in the
overlap when setting the forward route and why? (not for power
reasons, CTC mainline practice)
S Barker
LUL principle Describe berth track diversity. S Barker
Describe three methods of approach locking release. S Barker
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 15 of 27
1.2.100 Asst Installer (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 16 of 27
1.2.110 Installer (S)
Question Assessor
From what information would you obtain the site whereabouts
and how would you verify your position?
Craig Ackroyd
What procedures are used for the protection of operational
systems form accidental and unauthorised interference
Craig Ackroyd
What installation practises, procedures and standards are used? Craig Ackroyd
What special tools are used in Installation? What is done with
these, and how are they made?
Craig Ackroyd
What are the requirements of installation? Craig Ackroyd
What test equipment and procedures are used? Craig Ackroyd
Why do we calibrate test equipment? Craig Ackroyd
What company procedures exist for installation Integrity? Craig Ackroyd
Where do we list Test WIs? Craig Ackroyd
How is work content communicated to the installer? Craig Ackroyd
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 17 of 27
1.2.130 Installation Team Leader (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 18 of 27
1.2.140 Installation Manager (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 19 of 27
1.2.150 Test Assistant (S)
Question Assessor
Give TWO examples of types of Safety Procedures that should be
followed when testing
UK
How would you be expected to communicate with the Tester
whilst testing?
UK
What certificates and authority would you require to have before
you could commence testing?
UK
What, as a Test Assistant, would you regard as the limit of your
responsibility?
UK
What information would you require to be given by the Tester
before you could accurately locate a piece of equipment?
UK
What would you do, as a Test Assistant, as soon as you arrived at
the remote location for testing?
UK
Give some examples of the test equipment you would be likely to
be carrying, when testing remote location cases or track circuits.
UK
What would you do if you became aware of a defect / discrepancy
whilst at a remote location during testing?
UK
How would you report the lay / position of a relay if asked by the
tester?
UK
What do you understand by the term Authority to work
certificate?
UK
What formal documentation should be in place before any testing
can commence?
UK
When corresponding a set of points, what information should be
conveyed between the tester at the trackside and the tester at
the control panel?
UK
When Belling wiring, describe the actions required between the
caller and the operators?
UK
Describe the procedures to be undertaken when discovering a
malfunctioning circuit during testing.
UK
When testing within a freewired interlocking, describe the
procedures for controlling the use of Straps.
UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 20 of 27
1.2.180 Principles Tester (S)
Question Assessor
What is involved in a test plan or commissioning test plan? CA
What type of communication to Senior Management is there? CA
How is the SSI Simulation testing monitored, verified etc? What
spec details this?
CA
How are conflicts in documentation or principle/operational
queries dealt with?
CA
Where are safety procedures both occupational and operational
detailed or referred to?
CA
On a commissioning, what document details authority etc?
Describe the breakdown off this?
CA
How are circuit discrepancies handled during the stages pre test,
site test, commission?
CA
What legislation and rules would you apply when carrying out
your duties as a Principles Tester?
UK
Give an example of what you would consider to be a discrepancy. UK
Give TWO examples of conditions that must be fulfilled before a
system is returned to operational use.
UK
What tasks would you perform before you commenced testing? UK
How would you establish your task and the limits of your
authority?
UK
What Signalling and Interlocking Principles do you apply when
first approaching a new installation?
UK
What documentation would you expect to have on site when
commencing your testing?
UK
What would you consider as effective communication with your
Test Assistants?
UK
How would you verify that testing you had requested has been
completed?
UK
What action would you take if you were requested to undertake
testing that you considered to be beyond the limits of your own
authority?
UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 21 of 27
What does signal sighting serve to prove? UK
Why are double cut circuits used to feed external equipment? UK
What terminology should be used for points testing? UK
What terminology should be used for signal testing? UK
How do you know you have set the signal lamps to the correct
voltage?
UK
What would be your actions if a discrepancy was found in the
wiring of a location case?
UK
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 22 of 27
1.2.190 Tester in Charge (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 23 of 27
1.3.160 Signalling Tester (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 24 of 27
1.3.160 Signalling Tester (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 25 of 27
1.3.180 Signalling Principles Tester
Question Assessor
What legislative requirements have you accessed while testing? V Snook
When you are collecting information before you test, what do you
do if documentation is missing or out of date?
V Snook
If you are working at Dapto, what were the specific Health &
Safety issues?
V Snook
For a level crossing test, what are the other considerations? V Snook
How would you identify safe access points? V Snook
How would you differentiate between the tests you would have to
do for a SSI and a Westrace?
V Snook
How would you check the competency of staff required for the
Portuguese project?
V Snook
For a new railway authority, how would you identify what
methods of testing are required?
V Snook
For Portugal how did you identify outstanding tests to be done
at commissioning and who did you notify?
V Snook
What are the organisational requirements for testing
documentation?
V Snook
Where are your limits of authority defined? V Snook
Can you tell me about the certification required before you work
in installation in UK or Portugal or NSW?
V Snook
How did you identify the amount of testing required for Dapto
Interface?
V Snook
Where are the methods for recording what tests have been
completed/detailed for RFR?
V Snook
How do you document tests done for Sydenham-SSI? V Snook
When you were testing ADRAIL Xings, what
procedures/specifications did you use?
V Snook
What do you understand the implications of signing CISR off are? V Snook
What are the reporting lines for Portugal project? V Snook
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 26 of 27
1.4.110 Maintainer (S)
Question Assessor
Sample Assessment Questions IRSE Licensing Scheme
Issue: 3.0 6th May 2010 Page 27 of 27
1.4.130 Maintenance Team Leader (S)
Question Assessor
Category Questions1.1.100 Asst Designer (S)1.1.110 Designer (S)1.1.130 Principles Designer (S)1.1.140 Design Manager (S)1.1.150C Signalling Designer1.1.150D Signalling Principles Designer1.2.100 Asst Installer (S)1.2.110 Installer (S)1.2.130 Installation Team Leader (S)1.2.140 Installation Manager (S)1.2.150 Test Assistant (S)1.2.180 Principles Tester (S)1.2.190 Tester in Charge (S)1.3.160 Signalling Tester (S)1.3.160 Signalling Tester (S)1.3.180 Signalling Principles Tester1.4.110 Maintainer (S)1.4.130 Maintenance Team Leader (S)