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DNV-OSS-202 Verification for Compliance with UK Shelf Regulations

Sec.3: Written Schemes (Verification Services)

D: Application for Classed Units

D200: Application to installations

Sec.3
D 200   Application to installations

All installations

Sec.3 D
201   DNV offshore classification includes independent design and construction approval, and ongoing approval through survey, of important safety features of installations. Where appropriate, this can be directly credited into the UK scheme. This can be particularly useful in consideration of the following:

Conversions to floating production installations (Fixed Installations)

Sec.3 D
202   Floating Production Installations are fixed installations under UK regulations, and written scheme must address original design and construction, as well as modifications, such as offshore production systems. DNV classification can be useful for some of this retrospective verification.

Sec.3 D
203   Design and construction verification of topsides can take credit for additional DNV class notations, such as PROD and DRILL.

Mobile Units

Sec.3 D
204   Written schemes must be in place when a mobile unit enters UK waters. These schemes must include demonstration of adequate design and construction, as well as ongoing operations.

Sec.3 D
205   Similar to floating production installations above, classification can be useful for some of this retrospective design and construction verification under classification. Further design and construction verification will only be required where not originally identified or suitable under classification, or where systems require modification for use in the UK.

Sec.3 D
206   UK regulations therefore recommend that mobile offshore units are designed and built with verification requirements in mind. These will simplify acceptance for operation in UK waters, and avoid the need for major remedial action by duty holder.