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Part B - Verifications and approval requirements 
If tests on high-voltage submarine cables cannot be performed in accordance with the afore 
mentioned standards, reference is made to the CIGRE recommendations in their current ver 
sion, published in the following issues of Electra (CIGRE in-house journal): 
• CIGRE: Recommendations for Mechanical Testing of Submarine Cables. Electra Vol. 171, 
1997. 
• CIGRE: Recommendations for Testing of Long AC Submarine Cables with Extruded Insula 
tion for System Voltage above 30 (36) to 150 (170) kV. Electra Vol. 189, April 2000. 
• CIGRE: TB 490, Recommendations for Testing of Long AC Submarine Cables with Extru 
ded Insulation for System Voltages above 30(36) to 500(550) kV. 
6.2.2.2 Direct current transmission 
The current version of the following CIGRE recommendation can be used for all direct current 
(DC) cables: 
• CIGRE Recommendations for Mechanical Testing of Submarine Cables. Electra Vol. 171, 
1997. 
The following CIGRE recommendations in their current version can be used for plastic-insu 
lated high-voltage direct current (HVDC) cables: 
• CIGRE: Recommendations for Testing DC Extruded Cable Systems for Power Transmission 
at a Rated Voltage up to 250 kV. Electra Vol. 206, 2000. 
• CIGRE: TB 496, Recommendations for Testing DC Extruded Cable Systems for Power 
Transmission at a Rated Voltage up to 500 kV. 
The following CIGRE recommendation can be used for cables with mass-impregnated pa 
per insulation: 
• CIGRE: Recommendations for Tests of Power Transmission DC Cables for Rated Voltages 
up to 800 kV. Electra Vol. 218, 2005. 
6.3 Documents to be submitted for the approval 
The following documents must be submitted 6 months before the start of the cable laying at 
the latest: 
[Doc. No. 610] Technical description of the cables: incl. specifications of the cables, junction 
boxes, crossing constructions, laying equipment 
[Doc. No. 611] Burial Assessment Study (BAS): On the basis of the evaluated results of the 
cable route survey (please refer to the Standard Ground Investigations, 
Part D) for the model of laying equipment which is actually available 
(so-called Installer BAS) 
The following documents must be submitted 3 months before the start of the cable laying at 
the latest: 
[Doc. No. 612] Construction plan incl. preparatory measures for the construction (e. g. pre 
lay grapnel run, laying of a mattress when building crossing constructions) 
[Doc. No. 613] Detailed description of the cable-laying procedure 
As part of the approval procedure, BSH reserves the right to demand further verifications that 
the stipulated minimum burial depth is achieved.