CONTENTS

 1 Scope 
2 References 
3 Definitions  
        3.1 Terms defined elsewhere    
        3.2 Terms defined in this Recommendation       
 4     Abbreviations and acronyms        
 5     Maintenance of protective measures         
        5.1 General  
        5.2     Maintenance of earthing systems    
        5.3     Maintenance of lightning protection measures for structures 
        5.4     Maintenance of lightning protective measures for telecommunication systems           
        5.5     Maintenance of power induction protection measures         
        5.6     Maintenance of power line crossover protection measures  
        5.7     Maintenance of corrosion protection measures       
        5.8     Maintenance of protection measures on power systems (mains)      
 6     Documentation 
Appendix I – Network operator experiences on maintenance of GDT     
        I.1        France Telecom (FT)       
        I.2        Deutsche Telekom (DT)   
Appendix II – SPD-testing equipment     
Appendix III – Examples of documentation and local labelling     
      III.1 Example of the marking of influencing systems in topographical maps           
      III.2 Example of local labelling of influenced systems       
      III.3 Example of local labelling of corrosion protection systems   
      III.4 Examples of labelling ESD protected areas or equipment    
Bibliography