Part  B  -  Verifications  and  approval  requirements

85

[Doc.  No.  541]  Corrosion  protection  -  verification  of  the  proper  implementation  (application)
and  the  processing  quality  demanded
Verifications  can  be  made  on  the  basis  of  acceptance  tests  according  to  DIN
EN  ISO  12944-8,  incl.  the  Annex  hereto  (form),  or  according  to  the  corresponding ­
  Additional  Technical  Terms  of  Contract
[Doc.  No.  542]  Verification  report  of  the  appointed  inspector  with  respect  to  Doc.  No.  541  on
the  basis  of  the  verification  reports  of  the  approval  holder  according  to  DIN
10204

[Doc.  No.  543]  As-built  report
[Doc.  No.  544]  Inspection  report  pertaining  to  Doc.  No.  543
[Doc.  No.  545]  Project  certificate

5.5  Operation
5.5.1  Preliminary  remarks
The  requirements  of  the  operating  phase  are  described  in  chapter  B1.3.5  and  chapter
B2.5.1.
For  offshore  stations,  the  position  of  the  parts  to  be  inspected  and  their  different  qualities  (e.  g.
design  safety  factors)  mean  the  inspections  have  different  inspection  intervals.  On  the  basis  of
the  test  and  inspection  results  and  after  a  suitable  operating  period  and  number  of  inspections, ­
  these  inspection  intervals  can  be  adjusted  by  applying  for  a  deviation.  This  does  not
apply  to  intervals  which  are  subject  to  statutory  provisions  or  ordinances.
The  following  areas  shall  be  included  according  to  the  intervals  of  their  periodic  inspection.
•  All  load-bearing  structural  elements  of  the  offshore  station  which  are  crucial  for  the  stability
against  collapse
•  Other  supporting  elements  which  are  crucial  for  the  stability  against  collapse  (e.  g.  structural
bolts)
•  The  seabed  composition
•  Marine  growth  and
•  Corrosion  protection  (coatings  and  anodes).
Which  parts  of  the  support  structure  must  be  inspected  in  each  case  depends  on  the  type  of
structure.  A  distinction  shall  be  made  here  between  concrete  and  steel  structures,  for  example. ­
  For  the  test  and  inspection  plan,  only  the  parts  of  the  structure  which  ensure  stability
against  collapse  shall  be  taken  into  account.

5.5.2  Technical  codes  of  practice
The  technical  codes  of  practice  are  listed  in  chapter  B2.5.2.

5.5.3  Requirements  and  necessary  verifications
The  requirements  and  necessary  verifications  are  regulated  in  chapter  B1.3.5  and  chapter
B2.5.3.