Working with adjacent line open: Dr Liesel von Metz

Working with adjacent line open:
how to get it right
Dr Liesel von Metz
HM Inspector of Railways
Office of Rail Regulation
“Adjacent Line Open” (ALO) Working
!   Working next to one or more open lines of railway
!   Can be 1 or 2 lines blocked out of 4......
!   One of 2 lines blocked (previously “single line working”)
ALO Working: Characteristics
!   Frequently tight clearances
!   Blocks may be short, often at night, delayed
!   Midweek nights- 4 to 7 hours
!   Weekends- 36 to 48 hours
!   Limited locations for access, long Worksites
!   Isolation of OHLE might not match line block patterns
!   There is a cost associated with ALO working.... Do
lower Schedule 4 & 8 payments offset that?
ALO Working: Characteristics
ALO Working: Characteristics
ALO Working: principles of control
!   Risk to passing trains from RRVs, cranes etc
!  Block the open line at times when RRVs could be foul
!  Limit the movement of the RRV/crane so it cannot become foul
!  Speed limit of 20mph or 40 mph is not a control measure- but can be
a comfort factor for Drivers and the workforce
!   Risk to workforce from passing trains (and RRVs)
!  Barrier to separate the workforce from trains and/or a means of
warning the workforce trains are passing
ALO Working: History
How to do safe ALO working?
!   ALO working can be done safely if we take into
account the “3-ologies”:
!  Technology- the useful gizmos
!  Methodology- how the gizmos are used
!  Psychology- the challenge of human unreliability
!   The principles remain the same but each site and job
has specific characteristics
Technology: keeping the workforce safe
Magnetic fencing
Vortok fencing, ATWS
Technology: taking line blockages efficiently
Technology: Movement Limiting Devices
Slew Limitation
What is “reliable”?
Technology: Movement Limiting Devices
“Virtual Wall” concept
What is “reliable”?
Technology: Movement Limiting devices
GKD “Spaceguard”
How does CC know it is set?
Future technology: challenges to address
!   How do we constrain the base of an RRV that is not in
rail mode so we can control it in the dig?
!  Concept of a laser to define the datum for the machine base
!  Emergency stop systems for non-slewing plant (dozers)
!  Physical barriers have limited use in Track renewals
!   Gateway systems- is there a place for using temporary
TPWS as an emergency train-stop?
!   Speed-activated TSR reminder boards, personal
alarms- solutions looking for a problem?
Methodology: Planning the job
!   Plans need to reflect reality- as it is on the ground
!   Different activities during the job might need different control
measures- panelling out, digging/dozing, sleeper-laying,
thimbling new rail in
!   Engaging the supply chain: engineering train consist,
specific type of RRV or crane, maintenance and reliability
!   Contingency planning- “stuff happening” and an over-run
does not mean it is OK to reduce the level of risk control
!   Alternative methods
Methodology: Thoughts on planning
!   Are the work rates with a RRV using “Spaceguard” on it
as fast as without......?
!   Are your contingency options limited (e.g. if installing
modular S&C cannot revert to skim-dig)?
!   How likely it is the block will be granted on time?
!  Is there a “boat train” that is often late?
!  Does this Route struggle with resourcing isolation staff?
!   Do you know where the foul line is throughout the site?
Methodology: Engaging with the Route
Methodology: Implementation
!   Communication and competence
!   Who is in charge?
!  Do they know what is going on...?
!   Shift changes and changes in block pattern
!   Late Changes
!   Location of foul line
!   Monitoring: “what gets checked gets done”
Methodology: Contingency management
!   Identify and eliminate predictable failure modes
!  RRV failures: is the supplier being paid enough to carry out the
higher level of maintenance of MLDs required?
!  Does the expected work-rate impact on components
!   Decisions ideally involve all stakeholders, pulling
together- Route Control, contractors, suppliers, TOCs
!   Way out of the hole should maintain risk controls
!   Do we need “CRM” for Track Renewals?
Psychology: dealing with human fraility
!   People are not 100% reliable and never will be
!   Rule-driven culture, “NRB” fears, weekend warriors
!   Developing and retaining competence is important
!   Root cause analysis rather than blame
!   Environment: time pressure, dark, cold, wet, tired
!   What behaviours do we recognise/reward?
!   Work needs to be planned so it is achievable for
someone other than Superman
!   ALO working can be done safely and effectively
!   Sound planning and collaboration are critical
!   Innovation is not just about gizmos- it’s also about soft
skills, behaviours and getting people to pull together
!   Technology is a tool not a magic wand- the right
solution in the right place at the right time
!   Integrate the “3-ologies”- technology, methodology
and psychology
Successful ALO working