Page 116 - IRSEM_Main Book

5.3.2 General Instructions Applicable to Surveys

(a) The System of Signalling to be provided shall be as in Chapter 7 of SEM.

(b) Surveys for new lines, line capacity works, electrification etc. - Engineering-
cum-Traffic Surveys shall be carried out for New lines, Conversions, Doublings
and other Line Capacity Works costing more than Rs 2.5 Crores before the
inclusion of such works in the Works Programme.

(c) Survey for Signalling & Telecommunication Works. Field surveys shall be
carried out for the following categories of Signal and Telecommunication works
costing more than rupees 2.5 crores each before inclusion in the Works
Programme:
(i) Electronic/Relay Interlocking of Major yards.

(ii) Modern Signalling Works including CTC, ATP etc.

(iii) Communication Works including LTE/MTRC/UHF/OFC/QUAD etc.

(iv) IP Networks/Data Security/Web based Applications.

(v) IoT and AI based systems.

5.3.3 Alternative Proposals: Where alternative proposals of importance have been
examined and rejected, particulars shall be suitably indicated in the Plans or in
the report and the reasons for rejecting the alternative shall be explained in the
report.

5.3.4 Notes to be made in the Field: During the survey, careful notes with data shall
be made at site, from personal enquiry and observation, regarding any
information likely to be useful in working out the details of the Projects, and in
determining the prospects of the proposals. The following points shall receive
special attention:

(a) Availability of Space for S&T building including Office/Depot/Residential
quarter etc. as per requirement.

(b) Availability of required concrete sleepers.

(c) Availability of power supply at site or sites.

(d) Whether climatic condition will suit the type of equipment to be installed.

(e) Special problem like rocky soil, existence of wide rivers which may have to be
traversed by cables or overhead lines etc.

(f) Gradients on the section particularly if the Project is for provision of Automatic
Signalling.

(g) Detention to trains that can be saved; additional services that can be introduced.

(h) Availability of road approach.

(i) Any other specific requirement/consideration for the project like impact and
precautions due to nearby industrial conditions, line of sight etc.

Chapter 5: Planning, Estimating & Survey Page 88 of 535