Part B - Certificates and approval requirements 
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6 Inspection services 
6.1 Preliminary remarks 
Inspection services are provided by experts of the certifier/registered inspector or, if necessary, by other 
experts recognised by the BSH, and are used to ensure that the design requirements derived from the 
design documents have been implemented and complied with, as well as compliance with the basic 
standards and directives governing production, transport, installation, commissioning and operation. 
A plan for the extent of production inspection shall be worked out in consultation with the certifier/test 
expert. This planning shall define which components require inspection, which random sample level is to 
be selected and how to proceed if the inspection result is unsatisfactory. 
In detail, the relevant applicable standards and directives shall be taken into account. 
The following sections 6.2 to 6.4 focus on structural safety. Safety of personnel, lifting gear, cranes, 
transformer platforms, cable laying and add-ons shall be considered separately. 
6.2 Production inspection 
The following considerations on production inspection principally apply to welded structures; however, 
they shall be applied accordingly to components produced by other means. 
Prior to the start of production or work on site, the following documents shall be presented for viewing 
and inspection by the certifier/registered inspector: 
General 
• Valid QM certificate according to ISO 9001 
• Quality management:: QM handbook, QM procedural and working instructions 
Steel fabrication 
• Operating permit for the welding company, welding suitability certificate of the welding company 
according to DIN 18800 Teil 7 [491. 
• Qualification certificates of the welding personnel (welder test, e.g. EN 287 [501 or ISO 9606 [5111. 
• Qualification certificate of the welding supervisory personnel (SFI or SFM) 
• Qualification certificate of the personnel and provision of the necessary equipment for non-destruc 
tive testing 
• Welding process tests (Welding Procedure Quality Requirements, WPQR) 
• Certificates for welding fillers 
• Welding instructions (Welding Procedure Specifications, WPS) and 
• Implementation drawings as provided 
Concrete construction 
• Suitability test of the concrete provided 
• Provision of external inspection for inspection classes 2 and 3 
• Implementation drawings as provided (implementation drawings shall be checked for conformity 
with the implementation documents presented for the design test) 
Implementation drawings and welding instructions shall be checked for conformity with the implementa 
tion documents presented for the design test (drawings and provisional welding procedure specifications 
(pWPS)).