RADIOELECTRIC SITES CONTROL FOR COMPLIANCE OF GSM OBILE CELLULAR

TELEPHONY NETWORKS IN COTE D’IVOIRE

RADIOELECTRIC SITES CONTROL FOR COMPLIANCE OF GSM OBILE CELLULAR

TELEPHONY NETWORKS IN COTE D’IVOIRE

Workshop of ITU-T Study Group 5 Regional Group for Africa,

Cotonou, Benin, 19 July 2012

VALSCH-Consulting

DALLY BRICE LANDRYTechnical Manager

PURPOSE OF THE EXPERTISE

MISSION SCOPE

REFERENCES TO STANDARDS

STRUCTURES OVERVIEW

STRUCTURING OF THE MISSION

MISSION OPERATION

OBSERVATIONS

FAULTS PICTORIAL

EXPOSURES BY THE POPULATIONS

MEASUREMENTS PICTORIAL

REPORT AND SYNTHESIS

PURPOSE OF THE EXPERTISE

MISSION SCOPE

REFERENCES TO STANDARDS

STRUCTURES OVERVIEW

STRUCTURING OF THE MISSION

MISSION OPERATION

OBSERVATIONS

FAULTS PICTORIAL

EXPOSURES BY THE POPULATIONS

MEASUREMENTS PICTORIAL

REPORT AND SYNTHESIS

CONTENT

PURPOSE OF THE EXPERTISE

Control the compliance of GSM radioelectric sites to standards

requirement in the pylon implementation, electric security, buoying and

electromagnetic compatibility; 

Abide by technical prespecriptions, namely perimeters for security and

control;

Enhance ATCI basic information over technical parameters for

radioelectric operating setups;

MISSION SCOPE

The campaign covers the networks for the following mobile cellular

telephony operators: ORANGE COTE D’IVOIRE (OCI), MTN-CI, COMIUM

(Koz), ATLANTIQUE TELECOM (Moov) and ORICEL (Green).

REFERENCES TO STANDARDS  FOUNDATION

DTU P 18.702: French Regulations BAEL 91 regulations for design and the

calculation of armed concrete works following the method of neighbouring

countries.

DTU 13.12 : French Regulations for the calculation of surface foundations   METALLIC STRUCTURE (PYLON)

DTU P 06.002 : French Regulations NV 65 – regulations that define snow and

wind impacts on constructions/ Eurocode I.

DTU P 22.701 : French Regulations CM 66 and addendum 80 – regulations of

calculation of steel constructions / Eurocode III.

DTU P 22.703 : Justification par le calcul de la sécurité des constructions -

règles de calculs des constructions à parois minces en acier.

NFP22-430, NFP22-460 à 469 (assemblages métalliques).

 

 SYSTEM OF OVERHEAD SIGNALLING (BUOYING)

Recommendations of the International Civil Aviation Organization, OACI annex 14

chapter 6 (11/1999).

LIGHTNING SYSTEM

Rec IUT K56 : Protection of radio base stations against lightning discharges.

(01/2010).

Standards NFC 17-100 : Protection of structures against lightning (12/1997).

Standards NFC 15-100 : Electric Installations and Cables.

DIRECTIVES : IFC (international Financial Company) / WORLD BANK GROUP

Environmental, sanitary and security directives for Telecommunications

REFERENCES TO STANDARDS

FREE STANDING PYLON

INFRASTRUCTURES OVERVIEW

INFRASTRUCTURES OVERVIEW

Guyed Pylon

 

INFRASTRUCTURES OVERVIEW

MAST and TRIPOD

MISSION STRUCTURING

No of activity

Designation of activity Budget(Day)

Comments

01Development workATCI-VALSCH-OPERATORS OF CELLULAR MOBILE TELEPHONY

0,5Working session, explanation on the purpose and control points related to the mission

 02Receiving of fragment for engineering table and positioning of sites Mapping

 0,5

 -

03 Physical tracking for sites - Operation of the site implementation

04Mission performance

0,5Visual controls and measurement for IN SITU compliance, site per site

05 Draft of mission report 3 Site per site,

06 Draft of synthesis report 3Synthesis of standard gaps in percentage, for each plate covered

07Presentation of outcomes

0,5Plate per plate in line with the Operator’s DESIGN RADIO

POSITIONING OF SITES (MAP Info / Google Earth)

MISSION OPERATION

ENVIRONMENTAL CONTROL OF RADIOELECTRIC INFRASTRUCTURE

Such chapter deals with environmental verification for radioelectric sites, impacts

over environment/works done during the operational phases, rehabilitation and

re-development.

PYLON

Such chapter deals with measurements and visual controls to verify the stability of

the infrastructure (aerial plants).

SYSTEM OF AERIAL SIGNALLING

This chapter deals with the control of buoying operations night and day

according to the general prescriptions of the International Civil Aviation

Organisation (OACI) and local civil aviation authority.

MISSION’S OPERATION

SYSTEM OF LIGHTNING

This chapter deals with the system control for combatting lightning to protect

Telecom installation equipment and neighbouring.

RADIOELECTRIC DISCHARGE

This chapter is about the reading of true technical parameters, control of state

and evaluation of radioelectric discharge embarked on pylons and other

relevant structures.

SYNTHESIS AND PRESCRIPTIONS

This chapter is about the synthesis of faults and recommendations for

rehabilitation and compliance of works.

MISSION’S OPERATION

MISSION’S DETAIL : CONTROL FOR INFRASTRUCTURE RADIOELECTRIC COMPLIANCE.docx

OBSERVATIONS

Zones Concept and Signagee

Observations • Non existence of the security perimeter;• fault of security system in place;• Absence of appropriate signage.

1. ENVIRONEMENTAL CONTROL FOR RADIOELECTRIC INFRASTRUCTURE

ENVIRONMENT AND INSTALLATION

− Dirty Site;− Oxydization of shelter at some points;− Intallation of cables outside CDCH ;− Knickpoint of walls and concretes;− Grids of non secured oxdized condensers;− Electric Enclosures not secured;− Fuel leakage under generator;− Extinguisher: expired use period.

2.PYLON

− Preventers of end ofthe non existing higher ribs;− Reach of the main structure;− Advanced Oxydization of nuts and bolts;− Security Kit, oxydized, damaged or not exist;− Ladder and safety bow, oxydized, damaged or not exist;− Mechanic tensions not in compliance with prescriptions;− Vertical fault.

OBSERVATIONS

3.SYSTEM OF SIGNALLING

− Deterioated Day buoying;− Non Operative Night Buoying;− Open junction box;− Non operative dusk to dawn switch

4.LIGHTNING PROTECTION

− Measured value (isolated) higher to 10 Ohms ;− Old Lightning conductor;− Non Labelled Earthing Network;− Earthing system;− Absence of earthing system for some equipment;− Vandalized site, Site vandalisé , cut and robbed flats.

5. RADIOELECTRIC DISCHARGE

− Brake caliper, nuts and bolts, retransmission arms oxydized;− Retransmission arms not galvanized;− Antenna not well fixed / Design Radio not in compliance with

engineering table/space isolation not respected;− Deteriorated leaktightness not well completed;− Higher head discharge almost prescribed;

OBSERVATIONS

FAULTS PICTORIAL

ENVIRONMENT AND INSTALLATION

- non existing perimeter for security, home activities on radioelectric site;- Concrete cracking on radioelectric infrastructure.

PICTORIAL

PYLON

Balancing clamps not well aligned, nuts and bolts and oxydized safety kits

PICTORIAL

SYSTEM OF SIGNALLING

Non existing buoying, components of the night buoying system damaged

PICTORIAL

SYSTEM ANTI-LIGHTNING

Lightning conductor posts oxydized, ground rod oxydized, earthing

network robbed, cut and robbed strap copper, isolated measurement not

in compliance with standard prescription

PICTORIAL

RADIOELECTRIC DISCHARGE

Plug holes and GSM antenna fixing stirrup attachments damaged.

EXPOSURES BY THE POPULATIONS

- Exposure to electromagnetic waves transmitting sources (electrosmog) ;

- Electrocution ;

- Fire ;

- Houses Destruction;

- Aircraft crash (aeroplanes) ;

- Destruction of home appliances;

- Bad quality or interruption of communications;

- Etc.

MEASUREMENTS PICTORIAL

Measurement of earth resistibility.

Measurement of faulting vertical angle.

Measurement of mechanic tension of Hauban cable.

MEASUREMENTS PICTORIAL

REPORT AND SYNTHESIS DVD-OCI 28-06-

2012\001_RAPPORT_VC_ATCI_RX_OCI.xlsx

THANKS FOR YOUR ATTENTION