Documents for Block System and for Ground Frames and Shunters Releases New documents Document Document title Issue GK/RT0055 Block System Interface Requirements 1 GK/GN0655 Guidance on Block System Interface Requirements 1 Document Document title Issue GK/RT0077 Ground Frames and Shunters Releases 1 GK/GN0677 Guidance on Ground Frames and Shunters Releases 1 Documents to be withdrawn Document Document title Issue GK/RT0039 Semaphore and Mechanical Signalling 1 GK/RT0041 Track Circuit Block 1 GK/RT0042: Absolute Block 1 GK/RT0051 Single Line Control 1 GK/RT0054 Radio Electronic Token Block 1 GK/RT0060 Interlocking Principles 4 GK/RT0061 Shunters Releases, Ground Frames, Switch Panels and Gate Boxes 2 GK/RT0063 Approach Locking and Train Operated Route Release 1 GK/RT0064 Provision of Overlaps, Flank Protection and Trapping 1 Standards Committee(s): Control Command and Signalling, Traffic Operation and Management, and Infrastructure Issue/withdrawal date: 07 September 2013 Documents come into force/cease to be in force: 07 December 2013 RSSB Briefing Note Page 1 of 13
Background This Briefing Note presents the work undertaken under the project proposals 05/028a, b and c relating to the introduction of the new Railway Group Standards (RGSs) GK/RT0055 issue one Block System Interface Requirements and GK/RT0077 issue one Ground Frames and Shunters Releases and their associated guidance notes GK/GN0655 issue one Guidance on Block System Interface Requirements and GK/GN0677 issue one Guidance on Ground Frames and Shunters Releases and the withdrawal of RGSs GK/RT0039, GK/RT0041, GK/RT0042, GK/RT0051, GK/RT0054, GK/RT0060, GK/RT0061, GK/RT0063 and GK/RT0064, as set out above, which they replace. In April 2007 the Control Command and Signalling (CCS) Standards Committee (SC) approved the sub-projects 05/028a and 05/028b for the review of the Interlocking and Block System RGS required under the Strategy for Standards Management. During the review it was identified that a separate RGS addressing ground frames and shunters releases would be appropriate, and in March 2009 this was authorised under the proposal 05/28c by the CCS SC, and the RGS GK/RT0061 was included in the review. RSSB undertook a multi-discipline review of the requirements in GK/RT0039, GK/RT0041, GK/RT0042, GK/RT0051, GK/RT0054, GK/RT0060, GK/RT0061, GK/RT0063 and GK/RT0064 to identify those requirements in scope of RGS to be addressed in the new RGSs GK/RT0055 issue one and GK/RT0077 issue one. The findings of the review are set out in the supporting Impact Assessment. In April 2010 CCS SC approved the consultation comments responses and the documents for publication. However, following a meeting with on 24 March 2010, CCS SC put the projects on hold to allow for the preparation of a new document (RIS-0386-CCS Overrun Risk Assessment project 10/028) to facilitate the risk management and compatibility assessment aspect referred to in the new RGSs. The Rail Industry Standards (RIS) has taken considerable time to be drafted. The new RGSs to cover block working, ground frames and shunters releases and the associated withdrawals were therefore held up by the delay in the withdrawal of GI/RT7006 and development of the RIS. In June 2013 CCS SC agreed to progress projects 05/028a, 05/028b and 05/028c in advance of the production of the RIS on overrun risk assessment. CCS SC agreed that GI/RT7006 (project 05/029d) will remain live and will only be withdrawn following the publication of RIS-0386-CCS. Scope GK/RT0055 issue one mandates the interface requirements between signalling system infrastructure and railway operations for the following block systems: a) Track circuit block (including interlocked absolute block). b) Absolute block. c) Tokenless block. d) Electric token block (excluding no signaller token systems). e) No signaller token block. f) No signaller token block remote. g) One-train system with staff. h) One-train system without staff. RSSB Briefing Note Page 2 of 13
i) Radio electronic token block (RETB). The requirements are applicable to routes signalled using lineside signalling in accordance with GK/RT0045: Lineside Signals, Indicators and Layout of Signals, and are not applicable to routes solely operated using the European Rail Traffic Management System (ERTMS). GK/RT0077 issue one mandates requirements for: a) Ground frames where control of a part of the railway infrastructure may be transferred between a signaller and a ground frame operator, who may be an employee of a railway undertaking, and b) Shunters releases where co-operation is required between the signaller and railway undertaking personnel to allow movements into and out of infrastructure controlled by a railway undertaking. This scope does not include the use of emergency panels, standby control centres or gate boxes, which are the responsibility of the infrastructure manager. Key changes No material changes to existing requirements have been made and the key changes are associated with the withdrawal of: GK/RT0039: Semaphore and Mechanical Signalling GK/RT0041: Track Circuit Block GK/RT0042: Absolute Block GK/RT0051: Single Line Control GK/RT0054: Radio Electronic Token Block GK/RT0060: Interlocking Principles GK/RT0061: Shunters Releases, Ground Frames, Switch Panels and Gate Boxes GK/RT0063: Approach Locking and Train Operated Route Release GK/RT0064: Provision of Overlaps, Flank Protection and Trapping. These RGSs are being withdrawn because the in scope requirements they contain duplicate requirements that are mandated elsewhere, either in legislation, the Rule Book or another extant RGS or they have been included in the new RGSs GK/RT0055 issue one and GK/RT0077 issue one. The in and out of scope disposition of each requirement is set out in Table 1 of the supporting Impact Assessment, which includes the reason for the classification. The Impact Assessment concluded that no safety implications have been identified with the withdrawal of the nine RGSs GK/RT0039, GK/RT0041, GK/RT0042, GK/RT0051, GK/RT0054, GK/RT0061, GK/RT0060, GK/RT0063 and GK/RT0064 and the introduction of GK/RT0055 issue one and GK/RT0077 issue one. The only identified costs are those associated with the administrative activities that will be incurred in updating and amending documentation. It is therefore considered that the changes meet the objectives of the Strategy for Standards Management and satisfy the requirements of the Code. All withdrawn documents continue to be available on the RSSB website, in the withdrawn documents section, but will not, in future, be maintained by RSSB. Compliance requirements The RGSs GK/RT0055 issue one and GK/RT0077 issue one and their associated Guidance Notes come into force on 07 December 2013 which is the date on which the nine RGSs GK/RT0039, GK/RT0041, GK/RT0042, GK/RT0051, GK/RT0054, GK/RT0061, GK/RT0060, GK/RT0063 and GK/RT0064 cease to be in force and are withdrawn. RSSB Briefing Note Page 3 of 13
Where it is considered not reasonably practicable to comply with the requirements, authorisation not to comply should be sought in accordance with the Railway Group Standards Code. s authorised by RSSB The status of all authorised deviations, when RGSs GK/RT0055 issue one and GK/RT0077 issue one come into force, is as set out in Tables 1 and 2: Table 1 - s no longer in force 1. 06-101-TNC (GK/RT0039) 2. 06-102-DGN (GK/RT0039) 3. 07-168-DGN (GK/RT0039 4. 04-257-DGN 5. 05-095-TNC (GK/RT0042 Clause 6) 6. 05-133-DGN 7. 05-145-TNC 8. 08-147-TNC (GK/RT0042 clause 6.1) 9. 08-187-DGN GK/RT0042) 10. 05-112-DGN (GK/RT0051) 11. 06-212-DGN (GK/RT0051) Semaphore signals 27 and 45 and points A/B at Crew Bank Signal Box Abergavenny signal box signals 2 and 7 and points 9A/B. Loss of detection whilst the box is closed will not put the semaphore arm back to danger. Change to detection requirements when a signal box or ground frame is not manned for all relevant movements Relating to Kidderminster 27A points during periods when the controlling signal box is switched out. Decommissioning of Ironbridge Powerstation interlocking in July 2005. Replace home and starting signal with stop and telephone boards. Revised signalling instructions for Lightmoor Junction Signalbox. Wateringbury Kent. The inclusion of a block override control to allow an assisting train, not to pass signals at danger Revises signallers instructions for Lightmoor Junction signal box. To not fit an override facility and its associated incremental counter at the MCS VDU display at Rugby SCC. Relating to the renewals of the block circuitry at Cross Newydd. St Albans branch at Watford Yard GF A signal controlling entry to the terminal single line will not be provided. Welsh Highland Crossing on Dovey Junction -Pwllheli line between Minffordd and Porthmadog Ground frames which are not at token exchange points shall be released by an Annetts type key, physically connected to the CDU. Closed 18/5/2006 Not required, as out of scope as predated GK/RT0039 Closed 18/5/2006 Not required, as out of scope as predated GK/RT0039. Withdrawn on 15/01/2008 Superseded by 08-005-NC Proposal 08/044 Closed 16/12/2005. Expired 01/10/2005 Superseded by 05-145- TNC 1/12/2005 Expired 31/10/2006 Expired 31/7/2009 Application halted by 27/11/2008 23/8/05 15/2/2007 as not required, as not noncompliant. RSSB Briefing Note Page 4 of 13
Table 1 - s no longer in force 12. 00-170-NC 13. 01-006-DGN 14. 01-007-DGN 15. 03-072-DGN 16. 03-190-TNC 17. 03-255-TNC 18. 03-277-TNC 19. 03-278-TNC 20. 03-321-TNC 21. 04-177-TNC 22. 04-178-TNC 23. 04-209-TNC Non provision of separate signaller s control device for different class of route. To use the same control device as that used for the main route. Conditions required for setting Warner Routes Closed. 2/08/2003 Addressed in Interlocking Principles Issue Four of GK/RT0060 June 2003. Cancelled May 2003 DGN redundant when GK/RT0060 - Interlocking Principles revised to Issue Four with effect from June 2003. Setting and locking of routes re clause 5.1.2 Cancelled May 2003 DGN redundant when GK/RT0060 - Interlocking Principles revised to Issue Four with effect from June 2003. Facing shunt signal will be pre-set by main, waning and call on routes only. Shunt class routes will not pre-set facing shunt signals Requirements for foul track locking in clause 6.5 Dorset Coast Resignalling Project. Omission of implementation of foul track locking for separated point ends. Dorset Coast Resignalling Project. Re: Gap in enhanced sequential release between ALSR and TORR 18/01/2007 Expired 30/09/2004 Expired 30/09/2004 SIMIS W logic to be changed Expired 30/09/2004 Interlocking logic with a designable feature to select more than one track section within 10 months. Dorset Coast resignalling Self test routines where two signals share a SOM card. Bournemouth interlocking controlling Bournemouth and Branksome stations. Possible to for a route to be set where a previous conflicting route has been used and is still foul. Expired 30/09/2004 Expired 30/09/2004 Expired 1/02/2005 and superseded by 05-012-TNC for a further year extension. Interlocking logic update within 6 months Expired 30/09/2004 Request that time of operation locking be omitted for a specific case on the West Coast Route Modernisation where no berth track circuit exists to facilitate it. Expired 31/08/2005 RSSB Briefing Note Page 5 of 13
Table 1 - s no longer in force 24. 05-012-TNC 25. 05-134-DGN 26. 05-170-TNC 27. 06-213-DGN 28. 06-214-DGN 29. 06-215-DGN 30. 06-216-DGN (GK/RT0061) 31. 06-254-TNC 32. 03-322-TNC 33. 04-004-DGN 34. 04-006-DGN 35. 05-192-TNC 36. 06-064-TNC Bournemouth interlocking controlling Bournemouth and Branksome stations. Possible to for a route to be set where a previous conflicting route has been used and is still foul No separate controlling device for signal WB4R at Wateringbury Kent Relating to the Interlocking controls for Stockport nos1 and 2 interlocking control areas. Welsh Highland Crossing on Dovey Junction -Pwllheli line between Minffordd and Porthmadog. The interlocking shall ensure that any movement authority is capable of being withdrawn on demand. Welsh Highland Crossing on Dovey Junction -Pwllheli line between Minffordd and Porthmadog. The signaller shall at all times be able to replace a sop signal to danger. Welsh Highland Crossing on Dovey Junction -Pwllheli line between Minffordd and Porthmadog. Where other than a track circuit block system is provided, the block system shall control the setting of the route (which may involve the release of a token) where opposing locking is necessary. Relating to the acceptable methods of releasing a ground frame, including electrical release from the controlling signal box or release by token. Rugby Station remodelling project works. The form and design of speed warning indicators for reduced clearance. Dorset Coast Resignalling Reduce overlap to overcome interlocking problems Interlocking renewals at Edinburgh Waverley Interlocking renewals at Edinburgh Waverley Switch and crossing renewals Birmingham Moor Street - Overlap not provided on the exit signal SY181. Expired 01/02/2006. Addressed by 04-211-NC 22/3/2007 as not required. 15/2/2007 as not required, as not noncompliant. 15/2/2007 as not required, as not noncompliant 15/2/2007 as not required, as not noncompliant 15/02/2007 as not noncompliant Withdrawn 09/08/2007 Expired 03/09/2004 15/1/2004 DGN not required 15/1/2004 DGN not required 1/12/2005. TNC not required. 13/4/2006 TNC not required RSSB Briefing Note Page 6 of 13
Table 1 - s no longer in force 37. 06-006-TNC 38. 06-246-TNC Portsmouth Area Infrastructure Project - Cosham Junction Overlap of signal PW60 reduced by 3m Portsmouth Area Infrastructure Project - Cosham Junction Overlap of signal PW60 reduced by 3m Expired 24/12/06 Extended by 06-246- TNC Expired 18/01/08 Table 2 - s not applicable to new documents 1. 08-005-NC (GK/RT0039) Proposal 08/044 Supersedes 07-168-DGN 2. 04-149-NC 3. 05-110-DGN 4. 08-224-DGN 5. 09-180-DGN 6. 00-036-NC (GK/RT0051) 7. 05-110-DGN (GK/RT0051) Change to detection requirements when a signal box or ground frame is not manned for all relevant movements Allowing the up line exit signal PR112, for the absolute block section from Truro to work automatically. It will not be proved ON in the Line Clear controls to Truro, but it will be proved alight. Derogation against providing distant signals with the capability to be directly replaced by the controlling signal box on the G&SW line in the up and down directions between Kilmarnock and Hurlford. The implementation on the Settle and Carlisle line of consecutive Intermediate Block sections on the up line of the Appleby to Kirby Stephen and Kirby Stephen to Garsdale sections. Allowing the closure of Ashington Signal Box and extending telephone modified block working to Marchey s House Signal Box. For one-train working without staff. Not providing a separate replacement facility on the distant signal which works automatically. Derogation against providing distant signals with the capability to be directly replaced by the controlling signal box on the G&SW line in the up and down directions between Kilmarnock and Hurlford. Single Single Single Addressed in Clause 2.2.2.1 of the Block System Interface Requirements Standard GK/RT0055 and Guidance Note GK/GN0655. Single Single Single RSSB Briefing Note Page 7 of 13
Table 2 - s not applicable to new documents 8. 09-122-DGN (GK/RT0054) 9. 09-122-DGN (GK/RT0054) 10. 03-070-DGN 11. 03-072-DGN 12. 03-191-NC 13. 03-192-NC 14. 03-275-NC 15. 04-211-NC 16. 05-049-DGN 17. 05-055-NC Proposal 05/049 18. 05-230-NC Proposal 06/128 GK/RT0064 GK/RT0060 19. 06-080-NC Proposal 06/053 Changing the emergency keyswitch from a physical key operated switch to a button function on the RETB touch screen keyboard Changing the emergency keyswitch from a physical key operated switch to a button function on the RETB touch screen keyboard Route setting Not to include points required for flank protection in the initial route evaluation but to evaluate them in parallel. Facing shunt signals will be pre-set by main, warning and call on routes only. Shunt class routes will not pre-set facing shunt signals. Additional control will allow route release from the destination signal back to the entrance signal regardless of track occupation. A further release will be provided after an Area Control Computer (ACC) failure. Time of operation locking works with berth tracking sections. Not necessary to provide a separate replacement switch for distant signals reading up to stop signals protecting controlled level crossings. The points 388, 395 and 396 in the overlap of signals P73 and P174 are detected only when the alternative overlap is obstructed. \if all tracks in all alternative overlaps are clear, the points are not detected. Level crossing Crossing Clear is proved only in the aspect level of signalling controls for relay based and electronic interlocking rather than proving it in the locking level. To permit combined berth and overlap track circuits in respect of an automatic signal where shunt or calling-on class moves are routed up to the signal, as long as full track circuit controls are provided. Facing shunt signals will be pre-set by main, warning and call on routes only. Shunt class routes will not pre-set facing shunt signals as described in RT/E/S/10097 chapter 12. Single Single Single Single Single Single Single Single Single Single Single responsibility Addressed in GK/RT0045 clauses 3.1.2.6b and 2.6.2.5. RSSB Briefing Note Page 8 of 13
Table 2 - s not applicable to new documents 20. 07-009-DGN 21. 08-061-DGN 22. 08-138-DGN 23. 08-146-DGN 24. 08-153-DGN 25. 08-167-DGN 26. 09-074-DGN 27. 09-096-DGN 28. 09-107-DGN 29. 09-109-DGN 30. 09-167-DGN Transfer the replacement facilities to the four automatic signals (UR45, DR43, UM45 and DM43) in advance of the existing replaced signals. Preston PSB area Signal Replacement Facilities. The emergency replacement associated with specified ground frame recoveries on the Preston PSB Area are provided in a non-guaranteed manner. The provision of a common E button replacing two signals simultaneously. Signals PN3 and PN4 will operate to the principles current at the time Preston PSB and its respective interlocking were brought into service. To remove the requirement to prove the detection of points for swinging overlap. Works providing Intermediate Block signals for the Settle-Carlisle, Annan-Mauchline and Blackburn Hellifield that lever locks are not to be provided with the new signals. Emergency replacement facilities. Use of existing facilities as specified locations. Non-provision of signallers replacement facility. The new signal at GJ436 will not be provided with a signaller s replacement facility. Signallers to be fully briefed on how the signals will operate. To remove the requirement for the detection of points for swinging overlap (except in other routes which require the points in a given position for flank protection). Basis for retaining historic controls when minor amendments are being made or the signalling arrangement is being recontrolled. Basis for retaining historic controls when minor amendments are being made or the signalling arrangement is being recontrolled. Relates to Cambrian ERTMS level 2 early deployment scheme interlocking principles. Single Single Single responsibility Single Single Single responsibility Single Single Single Single Single New RGS GK/RT0055 does not address ERTMS RSSB Briefing Note Page 9 of 13
Table 2 - s not applicable to new documents 31. 09-204-DGN 32. 08-003-NC Proposal 08/040 (GK/RT0061) 33. 03-071-DGN (GK/RT0063) 34. 09-163-DGN (GK/RT0063) 35. 00-172-DGN 36. 05-059-DGN 37. 05-114-DGN 38. 05-213-NC 39. 06-120-DGN 40. 06-230-NC 41. 06-218-DGN 42. 07-001-DGN New NX-Panel at South Tottenham Station Junction Signal Box. Renewal of, alteration to, a control panel or lever frame, at either the controlling signal box or gate box, to not trigger the need to retrospectively bring the protecting signals up to full compliance. Train operated route release. Requirements for releasing route locking on a track section. ERTMS Project Relates to approach locking and Train Operated Route Release(TORR) for Cambrian ERTMS level 2. Clause 4.3Relating to the calculation of the length of overlaps based upon approach speed to ramp top not 400m point on approach to signal. Operation of track circuit interrupter shall only place or maintain main running signals at danger and not shunt/subsidiary signals. Operation of the railway between Heathrow CTA and T4 stations without protection from headshunt by trap points (or equivalent). Restoring points to a suitable safety position instead of to the normal position in all circumstances. A visual and/or audible indication, over and above provision of the key indication, to remind the signaller to restore trap points shall not be provided To amend section B4.8.4(b) to permit combined berth and overlap track circuits in respect of an automatic signal where shunt or calling-on class moves are routed up to the signal, as long as full track circuit controls are provided. For the Waverley scheme (mid-platform signals E453 and E455), it is proposed that the permitted speed commences 325m on the approach to the signals Acceptance of achievable overlap length of 179m instead of 180m at signal S208 on platform 1 of Meadowhill Interchange station. On the up main protecting Wincobank Junction. Single Single Withdrawn 18/01/2007 Single Single New RGS GK/RT0055 does not address ERTMS Single Single Single Single Single Single Single Single RSSB Briefing Note Page 10 of 13
Table 2 - s not applicable to new documents 43. 07-151-DGN 44. 09-015-DGN 45. 09-108-DGN 46. 09-170-DGN 47. 09-215-TNC Proposals Alloa Town to Longannet Trap points will not be provided at Longannet power station and West Departure lines 664 points at Plumpton. Non provision of alarm or self-normalisation. Basis for retaining historic controls when minor amendments are being made or the signalling arrangement is being re-controlled Single Single responsibility Single Provision of overlaps for ERTMS level 2. Single New RGS GK/RT0055 does not address ERTMS Reduce overlap on VS366 at Blackfriars. To reduce the overlap to 60m with a speed profile of 45mph on the approach, reducing to 25mph 260m from the signal and immediately on the approach to the signal. Single Table 3 Proposals closed and addressed Proposal 1. Proposal 02/158 GK/RT0051 and GK/RT0041 and Proposal 05/029 2. Proposal 05/028 99/094H Proposer Standards Review Requiremen t RSSB pp Railway Industry Proposal for 5 year review and to combine GK/RT0051 and GK/RT0041 in a single RGS Proposal for review of interlocking and block working RGS 3. Proposal 05/049 Network rail To require the proving of level crossing crossing clear controls in the aspect level (rather than in the locking level as currently required by the standard 4. Proposal 09/015 Amendment & Clarifications to current documents (GK/RT0054) Catalogue RETB Working Group Correction to clarify that: the display shall be blank when no token message is present rather than displaying a No Token message. Addressed through production of new RGS GK/RT0055. Addressed by production of GK/RT0055. Single responsibility See 05-055-NC relating to GK/RT0060 Addressed in clauses 2.4.4.4 in GK/RT0055. RSSB Briefing Note Page 11 of 13
Table 3 Proposals closed and addressed Proposal 5. Proposal 00/096 6. Proposal 06/053 7. Proposal 08/129 8. Proposal 09/005 Small scale change proposal 9. Proposal 09/006 Small scale change proposal 10. Proposal 09/025 11. 05-230-NC Proposal 06/128 GK/RT0064 GK/RT0060 12. Proposal 09/032 in relation to GK/RT0064, GK/RT0060 Proposal also applies to other RGS 13. Proposal 04/065 Proposer Control Facilities for use during Lineside Signalling failures Degraded Mode Operation. Facing shunt signals will be pre-set by main, warning and call on routes only. Shunt class routes will not pre-set facing shunt signals as described in RT/E/S/10097 chapter 12 To remove the requirement to prove the detection of facing overlap points for swinging overlap. Amend so that train detection section commences as soon as possible beyond the TSS. The joint should be as close to the signal as possible for early SPAD detection. With the provision of TPWS imposing predictable overrun distances the provision of flank protection of overlaps is no longer appropriate under certain circumstances To remove the requirement to prove the detection of points for swinging overlap. To permit combined berth and overlap track circuits in respect of an automatic signal where shunt or calling-on class moves are routed up to the signal, as long as full track circuit controls are provided. To change the compliance of this and other standards to allow application of the standards of the day when the interlocking is replaced with no track based alteration to the signalling. Addressed in GK/RT8071 Issued Feb 2006 See 06-080-NC Addressed in GK/RT0045 clauses 3.1.2.6b and 2.6.2.5. Single Single Single Single Single responsibility Addressed in compliance clauses in both GK/RT0055 and GK/RT0077 Controls for flank protection. Single 14. Proposal 08/001 ERTMS Programme (). No detailed ERTMS 15. Proposal 08/002 requirements identified 16. Proposal 08/009 ERTMS excluded from 17. Proposal 08/010 the new RGS GK/RT0055 18. Proposal 98/029 Related to overdue 5 year review of BR1654 BR1654 to be retained as a legacy specification document. Being progressed under Train Radio package 05/032 RSSB Briefing Note Page 12 of 13
Table 3 Proposals closed and addressed Proposal Proposer 19. Proposal 09/029 Relating to what lineside telephony should remain after the introduction of GSM-R TOM lead Standards Committee for Guidance Note RSSB Briefing Note Page 13 of 13