por Kimberlene Lindau hace 23 horas
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Notes recorded here and apologies for the vagueness but these were just general comments that were recorded whilst the SME's were discussing.
Have you got what you paid for?
Options for managing success criteria
How do you manage?
As a minimum, the following items shall be reviewed: a) Acknowledgement that the work has been completed as per the requirements of the specification b) Acknowledgement that the site has been handed back to maintenance and documentation received c) That the construction tolerances specified have been achieved d) That no unplanned no-compliances are present e) That the Success Criteria to be achieved have been addressed by the work carried out f) Details of any further work required, e.g. shortfalls.
Ross and Andy to feedback the references here and are they appropriate?
Task = comments from Ross
A discussion around risk mitigation to insert into content road map, add shortfalls
Reference the standard
Complete TEF3255 Part C or regional variation.
Identify the actions to take if the success criteria are not met.
Identify alternative options and analyse the benefits and drawbacks of each.
A shorter session is needed here, use examples in slides. Further training will be included at a later stage separate from this course.
Need NR/L2/TRK/018
This section potentially needs more time on the course agenda, more than 30 mins for the group exercise defined the content map. One of the SME's suggested a whole morning for this section.
Identify the appropriate tolerances agreed in the success criteria should meet the requirements of NR/L2/TRK/001 and NR/L2/TRK/2102 (where specified)
Need NR/L2/TRK/2102
Need to see standard NR/L2/TRK/063 for information on reuse and recycling of S&C assets
Need NR/GN/TRK/7001.
Identify the purpose of assessing the suitability of the condition of components and fastenings for the re-ballasting method.
The purpose of this is to control the risk of the track system collapsing whilst being supported, as stated in standard NR/L2/TRK/3415 Appendix C.2
Reballasting 0 - 25% Reballasting 25% - 50% Reballasting 50% - 75% Reballasting 75% - 100% Bearer changing 0 - 25% Bearer changing 25% - 50% Bearer changing 50% - 75% Bearer changing 75% - 100% Replace crossing unit Stressing S&T Disconnect and reconnection Switch toe alignment Replace S&C unit Replace 1/2 switch Replace full switch Replace IBJs OTM Tamping OTM Stoneblower Removal of existing scrap Upgrade access point Upgrade stretcher bars to tubular Replace sideworn rails Replace foot gall rail Replace gall baseplates Replace all pads, clips, nylons and screws 0 - 25% Replace all pads, clips, nylons and screws 25% - 50% Replace all pads, clips, nylons and screws 50% - 75% Replace all pads, clips, nylons and screws 75% - 100% Replace shroud plates, screws and associated pads Housing repairs on concrete bearers Resin repairs on cracked concrete bearers Survey and design costs Treat timber bearers with resin repair.
Identify all assets impacted but the S&C refurbishment
Explain why the position and condition of any drainage should be established for a worksite.
Identify drainage on a worksite
Explain how structures with foundations that could be undermined during re-ballasting
Identify and record risks associated with undermining structure foundations
Identify what should be recorded when re-ballasting is being considered.
Explain why recording the presence of these items is important.
The presence of: Geotextiles Geocells Grids Geocomposites.
Outline the conditions for S&C trial holes
Identify S&C trial hole information on a TEF3106.
Explain the impact of re-ballasting work on sites with formation issues on the designed life extension.
Outline the conditions for conducting a Track Bed Investigation (TBI) may be appropriate to be completed.
a) TEF3068 - Management of gauge: periodic switches and crossings inspection b) TEF3239 - Management of gauge: field face to field face c) TEF3074 - SM[T] points gauge FWC and RSO measurements d) TEF3029 - Switch inspection form e) TEF3031 - Crossing inspection report.
Reference made to NR/SIN/150 re: cracked bearers in RT60 layout. Do we need sight of this for the curriculum design work?
Reference made to NR/L2 TRK/001 modules 03-05. Do we need this for the curriculum design?
Copies of TEFs required for curriculum design:
TEF3068
TEF 3239
TEF 3074
TEF3029
TEF3031
Reference made to NR/L2/TRK/001 mod14 for ball and claw settings. Do we need this for the curriculum design?
The detailed site assessment may consider: a) correlation of maintenance records and operational failure history with on-site conditions b) Inspection of the existing S&C assets to check that the correct components and geometry as per the manufacturer's drawing are in place c) Missing components, e.g. screws, clips d) A visual assessment of the condition of track/components e.g. for wear or damage e) The condition of: i) bearers ii) baseplates including signs of baseplate shuffle iii) fastening systems, and iv) welds and joints f) Any fastening systems that are damaged which should be scoped for replacement and fastening systems should be considered for renewal if re-ballasting is planned g) The presence of obsolete fastenings h) The presence of cracked bearers in RT60 layout (see NR/SIN/150) i) The presence if damage to the underside of bearers from mechanical works e.g. tamper tine damage j) Any bowed long bearers k) The presence of dipped joints and wide gaps l) Headwear where new rails might be specified for renewal m) The presence of pre-1978 rail n) S&C supplementary equipment (e.g. legacy POE) o) Any component which does not meet the requirements of NR/L2/TRK/001 p) Track geometry including track gauge which should be checked throughout the layout for compliance to NR/L2/TRK/001 with any non-compliances recorded q) Whether ball and claw settings are in accordance with NR/L2/TRK/001/Mod14 r) Switch toe squareness and crossing nose to toe measurements s) The identification of two levelling baseplates t) All E&P, S&T, Building and Civil assets present within the area if proposed works (where re-ballasting works are being considered the relevant asset owners should be consulted) AND u) The presence of Remote Condition Monitoring.
Taken from Appendix A Scoping and Guidance Sec A.3 Detailed Sire Scoping Assessment A.3.1 Component Assessment and A.3.1.1 Additional Inspections
NOTES: i) Where track or signalling drawing is missing, this should be identified to the Network Technical Head of S&C. ii) Damaged or missing components might cause issues during the re-ballasting process.
I have a note regarding this section but not sure of its relevance
Include 'Undertake and State', ???
Data sources to consider: a) Ellipse/INM data for the asset type and component age b) Track geometry data to check rates of deterioration c) Maintenance records to identify existing or repeat geometry faults and existing reliability issues d) Forward-facing video camera data e) GeoRINM Viewer data f) Where sites have repeated faults, the root cause should be established, e.g. the presence of bearers damaged by mechanical maintenance g) The presence of: i) existing rail defects ii) any registered eighths iii) Inherent design alignment faults h) Ground penetrating radar (GPR) data to establish the condition of the ballast at the site )and run in/run out) i) Stressing records for the S&C unit j) S&C supplementary equipment ( e.g. legacy POE) k) the presence of remote condition monitoring (and any usable data) l) any record drawing (e.g. permanent way/signalling design plans and/or long sections) m) Assets present in the National Gauging Database and n) Historical track bed investigation data.
Taken from Appendix A Scoping Guidance Sec A.2 Desktop Scoping Assessment.
Removed Refer and Inserted Complete
Identify what the scoping should include as a minimum, as stated in standard.
There should be a focus on linking the success criteria to the problem statement, explain the process and that facts checks are required.
It was emphasised on numerous occasions, the need for linking all sections together.
Alott weighting to each success criteria
Address the track asset risk
Explain how the success criteria demonstrates the drivers for refurbishment
This will need checking to see if this flows and is relevant. We agreed that this session will include the presentation of the problem statements and case studies as part of day 1 homework.
This is similar to the tasks listed in 5. Problem Statement but it was discussed that there needs an understanding of the link between a problem statement and the Target Asset Life Extension/Value for Money, the content map will need to highlight this and describe the correlation between the two.
There was also a discussion that the flow chart maybe needed an extra stand alone box for the problem statement?
Gather data to measure cost
List all cost considerations
Gather data to measure standard adherence
List standard adherence benchmarks
Gather data to measure safety
List safety data points
List safety benchmarks
Gather data to measure performance
Add text
List sources of performance measures
List performance benchmarks
cost
standards
safety
performance
Complete a case study using a proposer to outline and asset manager to complete the problem statement as examples
This will need clarifying by the SME's the nature and purpose of this exercise
Prepare a case study example of a problem statement for presentation on day 2
Adhere to NR/L2/TRK/6001 requirements
identify the failure mode
Collate all data to determin root cause analysis
To be complete by a SME using the provided 'data points'
Case Study 4 - Not maintainable Asset
Demonstrate the ability to problem solve and build a RACI Model using case studies
Identify the region of the learner and use an example for the RACI exercise
Identify and Assign Roles for Tasks
0.1 General
A specification shall be prepared and recorded in project documentation by the Asset Manager or nominated delegate. The work outlined in the specification shall be aligned to the target asset life extension and success criteria. The specification shall include the following items as a minimum: a) general information (point number, location, ELR, track ID, mileage, target and delivery year); b) layout information (type, profile, speed, turnout direction); c) switch information (type, rail depth, steel grade, toe opening, out of square measurement); d) crossing information where scoped for refurbishment (angle, fabrication, steel grade, check rail type); e) description of work, including tolerance requirements and any impact on POE; f) ballast treatment where scoped for refurbishment (extent, crossfall grade and direction); g) handback and follow up requirements ; h) success criteria ; i) non-compliances/derogations (standard, clause, reason for non-compliance, acceptance criteria, supported by); and j) author/reviewer/approver/accepted by. TEF3255 (Part B) or regional variation may be used to record the specification. A list of potential refurbishment activities is provided in B.2. Consideration should be given to the re-use and recycling of S&C assets (see NR/L2/TRK/063). Where existing non-compliant conditions have been identified, or the planned work will result in non-compliant conditions, the Delivery Organisation shall agree these with the Asset Manager or nominated delegate as part of the development process, supported with a track temporary variation or derogation. Other discipline Asset Managers should review their plans to identify opportunities to update their assets. These opportunities should be evaluated and exploited as part of the refurbishment works where appropriate to maximise efficiency. Page 14 of 32 NR/L2/TRK/3415 Ref: Issue: Date: 3 04 March 2023 Compliance date: Refer to NR/L2/TRK/6100/Mod03 for the installation requirements for tubular stretcher bars and subsequent actions.
Move to section 2 to sit above Roles and Responsibilities
Evaluate the learners knowledge of the process flow.
