CH 8.pdf

Chapter 8: Drawings & Specifications Section 1: Plans for New and Working Installations 8.1.1 Preparation - General Procedure (a) All ‘Signalling & Interlocking Plans’ (SIP) shall be prepared for Station, Automatic Block Section and LC Gate as...

Chapter 8: Drawings & Specifications Section 1: Plans for New and Working Installations 8.1.1 Preparation - General Procedure (a) All ‘Signalling & Interlocking Plans’ (SIP) shall be prepared for Station, Automatic Block Section and LC Gate as required in accordance with the instructions issued by the Principal Chief Signal and Telecommunication Engineer. (b) The names of the junction or terminal stations should be noted on plans on both sides, that on the left-hand side being the one from which the kilometer progressively increases along with direction of traffic which shall be based on engineering scaled plan (ESP). On receipt of ESP, the same shall be checked for relevant details as per Annexure: 8-A2. The names of the adjacent block stations and midsection sidings/interlocked level crossing gates/IBSs connected with concerned stations should also be indicated on the plans as also their respective distances from the centre line of the station for which the plan is prepared. Communication to mid-section Manned LC gates shall be shown on the plan of the station to which such communication is established. (c) Standard drawings shall not be deviated and Typical drawings shall not be issued without the specific approval of the Principal Chief Signal and Telecommunication Engineer. (d) The Signal and Telecommunication Engineer incharge should ensure that drawings submitted with an estimate for a work are complete and include all information necessary. (i) For the proper understanding of the scheme, relevant notes are being written on the drawings. (ii) For proper check of the design and estimate. (e) When a part of the work has to be done to a standard plan or to an existing drawing, the fact should be stated. Such drawings need not be reproduced. If a part of the information necessary has to be supplied by another department, the officer incharge should obtain and incorporate the details on the drawing. (f) North direction should be shown on every signalling interlocking plan. (g) All drawings should be quoted by number in their proper place in the estimate and in the covering letter accompanying the estimate. Chapter 8: Drawings & Specifications Page 160 of 530  (h) Tentative signalling & interlocking plans (SIP) prepared for estimating purposes should bear the legend: "Tentative - For estimating purposes only". Tentative signalling interlocking plans issued for tender purposes should bear the legend: "Tentative - For Tender purposes only". Draft signalling interlocking plan sent to Divisions for comments should bear the legend: "Draft Signalling interlocking Plan For comments". All tentative/draft plans should be signed by at least a Senior Scale Officer. (i) Those signalling plans, which have been superseded, shall be stamped accordingly & visibly as “Superseded by …..” with Date and details. Old signalling plans shall also be Crossed across to avoid it`s mistaken adoption. (j) History of each station’s Signalling plans shall be recorded in chronological order along with CRS/PCSTE sanctions, Date of commissioning, Date of Plan updating, details etc. with remarks for any review required. 8.1.2 Plans for Other Departments (a) Divisional/Sr. Divisional Signal & Telecom Engineer/Dy. Chief Signal & Telecom Engineer may at his discretion prepare sketches for officers of other Departments or for Deposit Works. No detailed plans for Deposit Works should be prepared except on receipt of orders from the Principal Chief Signal and Telecommunication Engineer. (b) Sr. Divisional Signal & Telecom Engineer/Dy. Chief Signal & Telecom Engineer shall obtain complete details from officers of other Departments when preparing plans that affect those departments and embody their requirements on the plans, if considered necessary. He should arrange for the plans, to be signed by the representative of the department concerned in token of approval. 8.1.3 General Practice and Sizes of Drawings (a) The code of Practice for General Engineering drawings and the standard sizes of drawings - IS. 696 shall be followed as far as practicable. (b) In preparing plans or making ferro prints, wastage of drawing paper, tracing cloth and ferro paper should be avoided. Multiple ferro copying should be avoided by use of scanning from tracing. All field units should be issued soft copies only in PDF or TIF or JPG from scanned drawings. Field units to take colour prints from scanned soft copies for application to CRS’s/ PCSTE’s sanction. (c) The following considerations decide the size of a drawing (i) Folding, approximately to foolscap size to accompany correspondence and reports. (ii) The commercial size of drawings, tracing and paper rolls. Chapter 8: Drawings & Specifications Page 161 of 530 (d) The plan sizes given below in Table-1 shall be adopted. Table-1 Measurement including Type of Drawing Size Border Border A-4 210 mm x 297 mm Sketches 10 mm A-3 297 mm x 420 mm Locking Table A-3 297 mm x 420 mm 10 mm Control Table A-3 297 mm x 420 mm 10 mm Circuit Diagram A-3 297 mm x 420 mm 10 mm Power Supply Diagram A-3 297 mm x 420 mm 10 mm A-4 210 mm x Any length Track Bonding Plan 10 mm A-3 297 mm x Any Length Cable Termination Diagram A-3 297 mm x 420 mm 10 mm Control Cum Indication Panel A-3 297 mm x Any Length 10 mm (CCIP) Signalling Interlocking Plan A-3 297 mm x Any Length 10 mm Locking Diagram A-3 297 mm x Any Length 10 mm Cable Core Chart A-3 297 mm x Any Length 10 mm Cable Route Plan A-3 297 mm x Any Length 10 mm 297 mm x 420 mm for A-3 Standard Yard VDU Diagram 10 mm 420 mm x 594 mm for A-2 Bigger Yard Floor Plans for TSAA, Earthing Plan A-3 297 mm x 420 mm 10 mm Note: 30 mm margin to be provided on left hand side for binding purpose. (e) Drawings for a large project should be bound together, each such drawing should be marked as sheet 1, 2 and so on as also the total number of sheets (e.g., 1/3, 2/3, 3/3) and bear in the proper place, the separate numbers by which each is identified. These numbers should be entered in the Office Register of Drawings and should also be marked on the outside bindings. Chapter 8: Drawings & Specifications Page 162 of 530 8.1.4 Titles and Numbering of Drawings (a) The title and number may be placed at the bottom right hand corner of the plan, sufficient space being left for "Notes" to be entered as necessary. (b) Drawings pertaining to any station, viz., Signalling Interlocking plans, Locking Tables/Control Tables/Route Control Charts, Locking diagrams, wiring diagrams etc. shall bear the same number SIP.SCR.GTL.VPL.Ø1. (c) Document or Drawing type to have standard abbreviations such as SIP/RSP/ PD/ST/LT/RCC/WD etc. and for Electronic Interlocking Configuration Diagram (EIC), Relay Disposition Chart (RDC), Inter-Rack Cable Schematic (IRC), Earthing Arrangements (EAR), Equipment Rack Layout (ERL), Signal Equipment Room Layout (SER), Station Master Room Layout (ASM), Power Supply Room Layout (PSR), Interlocking Logic Circuit Diagrams(ILC), Interface Circuits (IFC), Visual Display Units (VDU) etc. All plans/drawings shall be version controlled & updated in the following manner: (i) Any controlled drawing or document needs to be identified uniquely and unambiguously. (ii) Drawing number shall indicate document type, zone, division, station and its version number. (iii) Unique codes are to be assigned for zone, division and station and document type. (iv) Version number is of two digit number XX which can cater for 99 versions. (v) Electronic record copies shall have the file names same as drawing number. (vi) Structure of the drawing number: Doc Type. Zone Code. Div Code. Station Code. Version. For example, SIP of Venkatampalli (VPL) Station, Guntakal (GTL) division of South Central Railway (SCR) may have a drawing number -SIP.SCR.GTL.VPL.Ø1. (vii) When drawings are having multiple sheets such as Interlocking Logic Circuits, Interface Circuits etc., shall have an index sheet. (viii) Structure of the drawing number where multiple drawing sheets are involved - Index Sheet - Doc Type. Zone Code. Div Code. Station Code. Version Sheet - Sheet#nnn. Version For example, Internal Circuit diagrams of Venkatampalli (VPL) Station may have a drawing number ILC. SCR.GTL.VPL.Ø1 Sheet#ØØ1. Ø1. (ix) Drawing number for Part drawing or document sometimes, only part of the drawing may be required for illustration or planning purpose. In such cases, drawing may have suffix ‘.Part’. SIP.SCR.GTL.VPL.Ø1.Part. Chapter 8: Drawings & Specifications Page 163 of 530 (d) Version Update (i) If changes are made in some of the sheets in signal interlocking circuit drawings, rest of the sheets are not required to be versioned upwards. However, version of modified sheets and all index sheets will be versioned upwards. (ii) It is not necessary to change version of other document/drawing types when one document type undergoes changes and version update. For example, if changes are made to track bonding diagrams, version will be upgraded only to track bonding diagrams. (iii) A register shall be maintained to keep track of versions for all document types for a signalling installation. (iv) Each Drawing shall bear the current version in the bottom right hand corner. (e) If more than one sheet is used for a particular work, each must be distinguished by the sheet number as indicated in Para 8.1.3(e) immediately following the drawing number. The title may be placed below the number. If the drawing cancels the previous one, a note to this effect and the number of the cancelled drawing should be recorded at the right hand top corner of the drawing. (f) Every plan/drawing/circuits should bear in small letters at the lower left hand corner, the name and initials with designation of the JE/SSE(D&D) who prepared and officials who checked & approved the plan/drawings/circuits. If plan/drawing/circuits are prepared by contractor, then Contractor's designer name/designation/license number with their initials shall be ensured. (g) All signatures in tracings should be in indelible ink. All signature should be dated with date month and year. If feasible, plans/drawings/circuits may be digitally signed. Chapter 8: Drawings & Specifications Page 164 of 530 8.1.5 Details on Drawings (a) All dimensions and distances shall be written carefully upon that part of the drawing to which they refer. The distance to be embraced by the figures shall be indicated by arrow heads. Figuring and descriptive matter should be so printed that without moving the plan, it can be read with ease. (b) The following information should invariably be shown on signalling interlocking plans: (i) Standard of interlocking and Class of station. (ii) Holding capacity of all running lines and sidings. (iii) Direction of reception and despatch on running lines and description of sidings. (iv) Restriction on dead-end sidings (For example: “Not For Stabling”) if any. (v) All gradients within the station limits and up to 2.5 kilometres in rear of first stop signal. (vi) Kilometrage and class of level crossings within the station limits, whether interlocked or not. (vii) Type of Block Working with adjacent station and location of block Instruments. (viii) Up and Down directions and names of important junctions on either side. (ix) Reference to condonation of gradient infringements, CRS's dispensation for deviations from General Rules/Signal Engineering Manual, if any. (x) Reference to approved Engineering plan based on which the signalling interlocking plan is prepared. (xi) Note regarding telephone communication provided between ASM/Cabin man and level crossings within and outside station limits. (xii) Aspect sequence chart. (xiii) Whether turnout is 1 in 8-1/2 or 1 in 12 or 1 in 16 or Symmetrical split or Thick web switch etc. (xiv) Details of Detection Table etc. which are not apparent in the plan. (xv) Details of Track Circuits/Axle Counter. (xvi) Signals, Inter-signal distances and distance between Warning Boards and Signals. (xvii) Details of open bridges/RUB/ROB/LHS. Chapter 8: Drawings & Specifications Page 165 of 530  (xviii) List all Main routes with all overlaps, Calling-On routes & Shunt routes. (xix) Custody of spare keys. (xx) Date of all previous references of commissioning the installation with their sanction numbers and deviations (if any) and date of commissioning. A sample copy of Signalling Interlocking plan & Control table are at Annexures in appendix II. 8.1.6 Check and Issue of Drawings (a) Signalling Interlocking Plans and Locking Tables/Control Tables shall be checked in full at two levels by officer before they are approved and signed by an officer in Junior Administrative grade or above, authorised by the Principal Chief Signal and Telecommunication Engineer. (b) Cable plans, power supply distribution diagrams etc. shall be checked in full at two levels by officers before they are approved and signed by Divisional Signal and Telecommunication Engineer/Senior Signal and Telecommunication Engineer. (c) All Circuit Diagrams including those submitted by the contractors or Firms (including PSUs) shall be checked in full at two levels by officer before they are approved and signed by Deputy Chief Signal and Telecommunication Engineer. Detailed wiring diagrams for individual stations prepared on the basis of approved typical circuit diagrams should be checked in full by an officer and Divisional Signal and Telecommunication Engineer or Senior Signal and Telecommunication Engineer who may approve and sign them. They are shown below in Table-2. Table – 2: Levels of Checking & Approvals Drawn & Level 1 Level 2 Type of Drawings Approval Checked by checking checking 1. HQ level SIP, TOC, Circuit Dy.CSTE or JE/SSE/D&D ASTE SSTE/D&D drawings diagrams Above Cable core plan, Cable route plan, Power distribution DSTE/Sr.DSTE/ diagram, JE/SSE/D&D ASTE ASTE/DSTE Dy.CSTE 2. Divisional/ Interface drawing for Unit level EI. drawings Track Circuit bonding diagram, Location termination JE/D&D ASTE ASTE/DSTE DSTE/Sr.DSTE particulars, Perimeter earthing for EI. Note: PCSTE may add more drawings and amend details given above as required Chapter 8: Drawings & Specifications Page 166 of 530 8.1.7 Completion (As Made) Drawings (a) The Signal and Telecommunication Engineer incharge of Construction/Work executing agency should submit site verified signed paper prints to the Principal Chief Signal and Telecommunication Engineer for works completed. These should indicate the work as actually carried out including the dimensional details as actually measured at site, location of signals, details of cables laid, wiring diagram, locking diagram etc. Completion of Signalling interlocking plan shall be based on completion Engineering scale plan if there is any change in ESP. Completion plan/drawings/circuits original tracings shall be signed by ASTE/DSTE of executing unit as confirmation of 1st level check. In case of work done by Railway PSUs then 1st level check should be carried out by PSU’s officer equivalent to rank of Executive Engineer and signed by divisional officials before submission to zonal HQ. 2nd level check should be done by railways ASTE/DSTE and approved & signed by an officer in JAG or above, authorised by the Principal Chief Signal and Telecommunication Engineer. (b) On receipt of these drawings, the original tracings will be amended in the Office of Principal Chief Signal and Telecommunication Engineer and marked "Completion Drawing". Scanned completion drawings will be sent to division and Requested number of copies of the completion drawing can be printed by Sr. Divisional Signal and Telecommunication Engineer. 8.1.8 Supply of Plans (a) Plans of working installations - In addition to the Standard drawings, each Divisional Signal and Telecommunication Engineer/Assistant Signal and Telecommunication Engineer shall have copies of the following diagrams and charts of working installations: (i) Engineering Plan and Signalling Interlocking Plan for each interlocked station including interlocked level crossings situated outside station limits and interlocked mid-section sidings. (ii) Station Working Rule diagram where issued, for each station including interlocked level crossings situated outside station limits. (iii) Locking Table and Locking diagrams of each interlocking frame, Station Master's slide control frame, interlocking key box, power frame with mechanical locking. (iv) Control Tables/Locking Table/Route Control Chart for each station. Chapter 8: Drawings & Specifications Page 167 of 530 (v) Control Cum Indication Panel (CCIP) Diagram/VDU Diagram: VDU diagram shall be submitted to actual size or in proportionate reduced size of the VDU for approval. Track Layout as per approved signalling interlocking plan with symbol for direction of traffic for each line of the layout; nomenclature of each line/siding; boards for BSLB/GWB/STOP; SM's key In/Out indications; SI cancellation Key-In indication; provision of all un-blocking; List of all emergency counters; relevant signalling details such as track section numbers with route set-clear/set-occupied or occupied lit indications in different colour; main/calling-on/shunt signal numbers with timer, locked indication & each aspects indications; points numbers with 'Normal' & 'Reverse' indication slits, locking indications, sub route cancellation symbol in blue colour with white dot; each signal route initiation & signal overlap set/release timer indications; block instruments status LCPR/SR/Block release indications; Crank handle Key-In/Key-Out indications for each crossover; status of active/ standby VDU; Link status, health status, OC/CIU status, CRC/Checksum; Date/Time, colour scroll for flashing indication etc. are the least but not limited, to be shown. Drg. No: 8-D3 for typical VDU layout may be referred. (vi) Bonding diagrams of track circuits for each yard showing complete layout and diagrams of individual track circuit showing location of insulation joints, jumpers, relay and feed ends, polarity, length, traction bonds etc. (vii) Diagrams of connections at track, line and other relays, as necessary for each track circuited yard. (viii) Diagram of Relay Interlocking, Electronic Interlocking circuits for each yard. (ix) Diagrams of single and double line block instrument circuits. (x) Diagrams of Location/Junction boxes showing description of wires at terminals for each yard. (xi) Arrangement of relays in relay racks and contact analysis sheet, fuse & terminal analysis sheets for Relay Interlocked/Electronic Interlocked stations. (xii) Diagrams showing connections of power supply panels for each power supply installation with perimetric/ring earthing diagram. (xiii) Cable route plan showing disposition of underground cables at OHE mast/regular intervals with respect to nearest track centre, for each yard. (xiv) Disposition charts of underground cables for control telephones, block instruments, administrative trunks and other railway circuits. (xv) Cable core plans of underground cables for signalling circuits under the charge of each SSE/JE(Signal). Chapter 8: Drawings & Specifications Page 168 of 530  (b) Senior Section Engineers/(incharge) and Sectional Senior Section Engineers/ Junior Engineer (Signal) shall be supplied with copies of the above mentioned drawings and charts. (c) At stations provided with centralised operation of points and signals, a set of signalling interlocking plans, locking/selection tables/route control chart, locking diagrams and wiring diagram, cable route plan etc. may be kept at the station for reference by the maintenance staff. (d) While signalling interlocking plans, Locking table/Section table/Route control chart and wiring diagrams shall be supplied by Headquarters Office, other plans mentioned in Para 8.1.8 shall be issued by Deputy Chief Signal & Telecommunication Engineer (Construction) or Senior Divisional Signal & Telecommunication Engineer (maintenance) as the case may be. Signalling interlocking plans for non-interlocked stations shall be prepared by Deputy Chief Signal & Telecommunication Engineer (Construction) or Senior Divisional Signal & Telecommunication Engineer (maintenance) as the case may be. 8.1.9 Care and File of Tracings (a) Tracings shall not be used for reference as they are likely to get lost or damaged. Required number of prints taken from scanned tracing should be supplied to Officers and JE/SSEs. Each particular file should contain a print taken from scanned tracing of the works relating to it. (b) Should it be necessary to send a tracing from one office to another, it shall be rolled and inserted in a cardboard cylinder. (c) Print from scanned tracing should be folded in concertina fashion and shall when folded measure approximately 210 mm x 300 mm. The folding should be arranged so as to make visible the title of the plan without unfolding the plan. When prints are rolled for despatch, they should be rolled with the working side outwards. (d) The Records section of each Drawing Branch may file every tracing and original drawing on the basis of the subject classification and the index card filing system. Each drawer of the index card cabinet should be distinguished by a classification number: each card should be complete as regards title of the drawing, other connected drawings, file reference and the drawer number in which the original is stored. (e) The storage-drawers should have placards on the outside indicating the contents in each. The plans should be stored flat in shallow drawers of convenient dimensions. Probability of damage by moths or white ants or fire should be guarded against. Chapter 8: Drawings & Specifications Page 169 of 530  Section 2: Indian Railway Standard Drawings 8.2.1 Signalling and Interlocking Drawings - IRS (S) & Notation (a) Indian Railway Standard Drawings, designated by the code word I.R.S. have been issued by the Director-General, Research Designs and Standards Organisation, Ministry of Railways, Lucknow. The signal drawings are marked IRS (S) -"S" stands for "Signal". The particulars of the drawings and their reference numbers are detailed in an "Index of Indian Railway Standard Signalling and Interlocking Drawings - IRS (S)". This index shows all the IRS (S) drawings arranged alphabetically, as well as serially, in the order of their numbers. Each drawing number is either prefixed with letters 'SA' or letter ‘S’. 'SA' stands for a signal assembly and 'S' stands for a part of a signal assembly. (b) New designs and drawings which are accepted for adoption as standards have the word "Advance" suffixed to their number e.g. S-8716 (Advance), pending their final adoption as Indian Railway Standard Drawings. For such drawings the manufacturers shall have a sample approved by the purchaser before undertaking the bulk manufacture. (c) Supply of Standard Drawings RDSO drawings available on RDSO website, shall be referred as and when required. However, a set of RDSO drawings shall be maintained in the office of Sr.DSTE/Dy.CSTE, DSTE/ASTE and by each SSE/JE as required. Section 3: Standard Specifications 8.3.1 Indian Railway Standard Specifications (a) Indian Railway Standard Specifications - Specifications for materials used for signalling purpose are issued by the Signal Directorate, Research Designs & Standards Organisation, Ministry of Railways, Lucknow and are titled as "Indian Railways Standards Specifications". These specifications are issued under a fixed serial number e. g. S-12-54, the letter "S" denoting "Signals" the number "12" representing the serial number of the specifications and the final number "54" indicating the year of original adoption as standard, or in the case of revision, the year of last revision. IRS/RDSO specifications are available on RDSO website. (b) Other Specifications: Specifications issued by national/international standards bodies like Bureau of Indian Standards, British Standards Institution, CENELEC (European Committee for Electrotechnical Standardization), IEC (International Electrotechnical Commission), ASTM (American Society for Testing and Materials) International, DIN (German Institute for Standardisation) may also be referred for signalling purposes, where required. Chapter 8: Drawings & Specifications Page 170 of 530  (c) Each Sr. Divisional Signal and Telecommunication Engineer and Assistant Signal and Telecommunication Engineer should have a copy of all Indian Railways Standard specifications for signalling items in his office. Copies of other specifications issued by national/international standards bodies that are generally required for signalling purpose may also be kept. He should also have a copy of all specifications issued by Principal Chief Signal and Telecommunication Engineer for local use. (d) Availability of Specifications: Indian Railway Standard Specifications, Indian Standard Specifications, British Standard Specifications are available online, at respective websites. Section 4: Books of References 8.4.1 Books of Reference Books of reference should be supplied to Officers, JE/SSEs and Technicians for their personal use, as well as for use in their offices. A statement showing the various books and their distribution is at Annexure: 8-A1. Where soft copies are available such distribution may be dispensed with completely or partially. 8.4.2 Each Sr. Divisional Signal and Telecommunication Engineer should arrange to have under mentioned technical literature in the Divisional Library (a) RDSO Specifications with latest amendments (b) Other relevant specifications with latest amendments, as required for signalling purpose (c) Reports of the Signal Standards Committee (d) Current Vendor Directory with latest monthly amendment (e) Approved recommendations of Signal Standards Committees (f) Approved recommendations of Maintenance Study Groups (g) Railway Board's instructions issued time to time (h) Updated Codes and Manuals with latest correction slips (i) RDSO's guidelines/Technical Advisory Notes (TAN)/Pre-Commissioning Check lists/Amendments issued time to time (j) Specifications/Drawings/Instructions/Guidelines issued from Zonal Railway Headquarter with latest amendments (k) Technical papers and Journals relevant for signalling, etc. Chapter 8: Drawings & Specifications Page 171 of 530  Section 5: Maintenance of Drawings, Specifications and Book of Reference 8.5.1 Folders for Drawings (a) Typical drawings, plans of working installations and specifications should be maintained in a book form separately bound in suitable folders. (b) Where Soft Copies are maintained, they shall be securely stored Division Wise, Section wise, Sub section wise, Station wise, with Version number. A secured Computer server with UPS back up & Data back up shall be utilised for such storage. (c) Standard Drawings and Plans of working Installations - Railway should publish lists of standard drawing as also lists of plans of working installations for the information of the staff. Addenda and Corrigenda slips should be issued to these lists regularly once in six months incorporating particulars of drawings and plans issued, modified or cancelled. (d) Accountal: Accountal of Books of Reference and their Addenda & Corrigenda shall be maintained in the same way as tools and plant items. 8.5.2 Responsibility (a) All officials to whom books of reference have been supplied shall be responsible for: (i) Their safe custody and good order. (ii) Pasting of all addenda and corrigenda slips promptly and seeing that these are up-to-date to the last slip as modified from time-to-time. (iii) Returning of all books issued to them for personal use prior to retirement. (b) Each JE/SSE (Signal) shall be responsible to see that (i) The standard drawings and plans of working installations are properly maintained and kept up-to-date in respect of new drawings issued and old ones cancelled; (ii) The staff working under him understand and carry out work in accordance with standard drawings and plans of working installations. Any mistake in drawings and plans that may come to his notice should be promptly intimated to the Divisional Signal and Telecommunication Engineer for arranging correction; and (iii) The staff under them maintain their books of reference up-to-date and in good order. Chapter 8: Drawings & Specifications Page 172 of 530  (c) Each Senior Divisional Signal & Telecom Engineer shall be responsible to see that (i) The standard drawings, plans and specifications in his custody are kept up-to-date and that the obsolete and cancelled ones are destroyed. (ii) All JE/SSEs(Signals) keep their standard drawings and plans up-to-date. (iii) The staff properly understand and carry out work in accordance with the standard drawings and plans. (iv) Any mistake in the standard drawings, working plans and specifications, which comes to his notice, is promptly intimated to the Principal (or Coordinating) Chief Signal and Telecommunication Engineer for arranging necessary correction. (v) Each Sr Divisional Signal and Telecommunication Engineer shall make periodical check to see that JE/SSEs maintain their books of reference up-to-date and in good order. He should encourage his JE/SSEs and other staff to study reports, proceedings, papers and journals mentioned in Para 8.4.2. So as to enhance their knowledge and to keep themselves informed about the up-to-date developments, methods and technique in Railway Signalling and Telecommunications. (vi) Proper Distribution & Accountal of Documents. Section 6: Indian Railway Standard Equipments 8.6.1 Indian Railway Standard Designs (a) Where Indian Railway Standard Drawing/Specification exist, they should invariably be followed for all new works and no modification of such designs should be introduced without the previous approval of the Railway Board. (b) If any defect in Standard Drawing/Specification is noticed under service conditions or if certain modifications to the design are considered desirable, the matter should be brought to the notice of the Director General (Signal), Research Designs & Standards Organisation for examination in consultation with the Signal Standards Committee. Section 7: Detailed Designs 8.7.1 General guidelines (a) The designs shall be suitable for RE as per stipulations in Chapter 22 of SEM on "Requirements of signalling in 25 KV AC electrified areas". (b) The designs shall be in accordance with the approved signalling plans, Control Table, Control Panel diagram, Relay contact analysis and relay rack arrangements. Chapter 8: Drawings & Specifications Page 173 of 530  (c) The designs shall be suitable for the specific type equipment to be installed such as Make of Electronic Interlocking (Distributed or Central), MSDAC, SSDAC, UFSBI Etc and the type of Interfacing & features. Use of dual OFC in Distributed type of Electronic Interlocking, Automatic signalling/Intermediate Block signalling (schemes given at the end of respective chapters and drawings given in Appendix II, are desirable as they provide an alternate path in case of Failures). (d) The drawings & designs shall be made, in accordance with Typical templates, RDSO`s Standard circuits/templates, guidelines, Board guidelines, Industry`s best practices & principles of Reliability, Availability, Maintenance & Safety in mind. (e) Uniformity of designs shall be ensured in the same section/station. For example: (i) Same Relay contact may be allocated to same aspect of every signal at a station/section. (ii) Officer incharge shall make out such list of standard practices for guidance of all design staff. (f) In case of alterations to existing installations, the following colour code may be adopted for clear understanding of staff for smooth work. (i) Single drawing method for simple alterations: Green for deletions & Red colour for additions, in same sheet. (ii) Two drawing method for major alterations: Green for deletions & Red colour for additions in separate sheets. Sequence of work & procedure to be followed shall also be mentioned in a descriptive document (with document/File number) to be attached along with drawings and marked as “Procedure for alterations for ……. Work at ….. Station for signalling plan no….”. 8.7.2 Control Panels-General: Refer to Para 21.1.2 8.7.3 Arrangements for control panel: Refer to Para 21.1.3 8.7.4 Indications to be provided for Control Panel: Refer to Para 21.1.4 8.7.5 Interlocking and Circuit Requirements - General: Refer to Para 21.1.5 8.7.6 Route Setting Type - Refer to Para 21.1.6 8.7.7 Non Route setting Type: Refer to Para 21.1.7 8.7.8 Route Release Circuits: Refer to Para 21.1.8 8.7.9 Signal Control Circuits: Refer to Para 21.1.9 Chapter 8: Drawings & Specifications Page 174 of 530 8.7.10 Locking of Advanced Starter and Starter Signal at Junction Stations: Refer to Para 21.1.10 8.7.11 Level Crossing Gates circuits: Refer to Para 21.1.11 8.7.12 Point Control Circuits: Refer to Para 21.1.12 8.7.13 Crank Handle & Siding Control Keys: Refer to Para 21.1.13 8.7.14 Cross Protection features: Refer to Para 21.1.14 8.7.15 Control Terminal (Video Display Unit (VDU)): Refer to Para 21.1.15 8.7.16 Precautions for design of circuits using Electronic devices: Refer to Para 21.1.16 8.7.17 Train Detection (Track Circuits & Axle Counters): Refer to Para 21.1.17 8.7.18 Interface with Electronic Interlocking: Refer to Para 21.4.3 8.7.19 Version control of Softwares of Electronic Interlocking: Refer to Para 21.4.7 8.7.20 Lightning & Surge protection for Signalling systems: Refer to Chapter 21, section 7 Note: This Chapter has under mentioned Annexures S.No. Annexure No. Description Various Books of Reference and their Distribution among 1 8-A1 the Staff 2 8-A2 Check List for Engineering Scale Plan (ESP) Note: This Chapter has under mentioned Drawings in Appendix II S.No. Drg No. Description 1 8-D1 Signalling Interlocking Plan for Double Line Station 2 8-D2 Control Table for Double Line Station (Sheets-4) 3 8-D3 VDU Layout Plan for Electronic Interlocking (EI) Chapter 8: Drawings & Specifications Page 175 of 530 Para No. 8.4.1 Annexure: 8-A1 Various Books of Reference and their Distribution among the Staff Scale Office of Personal Possession of Sl. SSE Publications Asst. Asst. (Signal) No Sr.Divl. Sr.Divl./ Technician SSE (Signal) S&T S&T S&T S&T Incharge Incharge Engineer Engineer Engineer Engineer Sectional (Signal) SSE/JE 1 2 3 4 5 6 7 8 9 1 Rules for the opening of a Railway for the 1 1 -- 1 1 -- -- Public carriage of passengers. 2 General and 1 1 1 1 1 1 1 Subsidiary Rules 3 Schedule of 1 1 1 1 1 1 -- Dimensions (B.G). 4 Signal Engineering 1 1 1 1 1 1 1 Manual 5 Telecommunication 1 1 1 1 1 1 Manual 6 Block Working 1 1 1 1 1 1 1 Manual 7 Accident Manual 1 1 1 -- -- -- -- 8 A.C. traction Manual 1 1 1 -- -- -- -- 9 Permanent Way 1 1 -- -- -- -- -- Manual 10 Track Manual 1 1 -- -- -- -- -- 11 Indian Railway Code for the Engineering 1 1 -- -- -- -- -- Department. 12 Indian Railway 1 1 -- -- -- -- -- Establishment Code. 13 Indian Railway 1 1 -- -- -- -- -- Financial Code 14 Indian Railway Code for Stores 1 1 -- -- -- -- -- Department. 15 Indian Railway code for Accounts 1 1 -- -- -- -- -- Department. Chapter 8: Drawings & Specifications Page 176 of 530  Scale Office of Personal Possession of Sl. SSE Publications Asst. Asst. (Signal) No Sr.Divl. Sr.Divl./ Technician SSE (Signal) S&T S&T S&T S&T Incharge Incharge Engineer Engineer Engineer Engineer Sectional (Signal) SSE/JE 16 Schedule of Powers of Divisional/district and Assistant Officers in other than 1 1 -- -- -- -- -- Establishment matters (as published) 17 Pass Manual 1 1 1 -- -- -- -- 18 The Hours of Employment Regulations with 1 1 1 -- -- -- -- modifications as issued 19 Payment of Wages Act with 1 1 1 -- -- -- -- Notifications as issued. 20 Working Time Table and Appendix 1 1 1 1 1 1 1 thereto. 21 Alphabetical list of 1 1 1 -- -- -- -- Railway stations. 22 Catalogue of stores 1 1 1 -- -- -- -- 23 Indian Railways Act 1 1 -- -- -- -- -- 24 Indian Workmen’s 1 1 -- -- -- -- -- Compensation Act. 25 Indian Electricity Act 1 1 -- -- -- -- -- 26 Indian Petroleum Act 1 1 -- -- -- -- -- 27 I.R.S Drawings 1 1 *1 -- -- -- -- 28 I.R.S. specifications 1 1 -- -- -- -- -- (as required) 29 Railway Standard 1 1 *1 -- -- -- -- Drawings. * As Required. Note: Where soft copies are available, such distribution of physical copies may be dispensed with completely or partially. Chapter 8: Drawings & Specifications Page 177 of 530 Para No. 8.1.1 Annexure: 8-A2 Check List for Engineering Scale Plan (ESP) REMARKS OF S. Description of the Item JE/SE/SSE/ SSTE/ No. ADSTE Drg DSTE 1. Complete layout of the yard should be shown by the Engg. Dept. even for works for minor nature. Alteration/Modification should not be shown in a part plan. 2. Plan should be prepared in 1:1000 scale 3. North Point should be shown on the top of the sheet. 4. Kilometerage and Chainage (0.00 m) of the station building should be clearly indicated. 5. Direction of Train movement i.e. UP & DN should be clearly indicated at the top centre as well as at the ends of the yard. 6. Name of the adjacent Block Stations with their distances at both ends and name of the Junction Stations to be indicated. The Kilometerage shall start incrementing from left hand side to right hand side & mid section siding if any to be shown. 7. All Gradient at the yard must be shown and should be in sequence. Gradient & its chainages upto 2.5 km from first stop signal both ends should be shown. 8. a) Gradient of new Stn. Yard within 50 m from outermost point should be 1 in 1200. Permitted upto 1 in 400 with out condonation. b) Allowed upto 1 in 400. CRS‘s Dispensation required for gradient steeper than 1 in 400 upto 1 in 260. Rly.Bd’s Condonation required for gradient steeper than 1 in 260. Despensation or condonation obtained/to be obtained should be indicated clearly in Engg Scale Plan. 9. There must be no change of grades within 30 meters of any points & crossing. 10. If any alteration is proposed for the existing yard, the portion of the yard where alteration is proposed shall be marked with Red colour, and the portion of the yard where alteration is not proposed is tallying with the existing sigg. Plan 11. All Lines should be designated for identification and reference. All lines No. to be written starting line No.1 from station Bldg. side. Chapter 8: Drawings & Specifications Page 178 of 530  REMARKS OF S. Description of the Item JE/SE/SSE/ SSTE/ No. ADSTE Drg DSTE 12. The clear standing room of all lines e.g., running lines, Sdg. Lines, should be mentioned. CSL should be minimum 720 m for New lines and 686 m for existing lines. 13. Platforms should be provided on lines on which it is intended to receive passenger trains.Platform level e.g, RL, LL, HL etc. to be indicated. 14. The classification, kilometerage, chainage from Centre of station building, Manned/ Unmanned and number of each level crossing should be shown. Classifications of L.C. Gates are to be revised according to present TVU. Spl- >50000, A->/=30000 & /=25000 & /=20000 &