Role of Third-Party Oversight and Certified Verification Agents - Structural Integrity of Offshore Wind Turbines - page 101

TABLE 5-1 Comparison of Scopes for Wind Energy and Oil and Gas Facilities

Offshore

Type Wind Energy, Oil and Gas,

Label Item Certification 30 CFR 285 Recommended 30 CFR 250

A
B

Blades
Control and protec-
tion system
Generator
Gearbox
Tower and struc-
tural support
Foundation
Infield cables

Design
Design

No
No

Des, fab, inst
Des, fab, inst a

N/A
N/A

C1
C2
D

No
Design
Design

No
No
Des, fab, inst

No
No
Des, fab, inst

N/A
N/A
Des, fab, inst

E
F

No
No

Des, fab, inst
No

Des, fab, inst
Yes

Des, fab, inst
No (infield
flowlines
equivalent)
Des, fab, inst G1 Electric service

platform
Electric service
platform; trans-
formers, con-
trols, and so
forth
Export cable

No Des, fab, inst b Des, fab, inst

G2 No No Des, fab, inst No (drilling and

processing
facilities
equivalent)

H No No Yes No c (export

pipeline
equivalent)

N OTE : des = design, fab = fabrication, inst = installation.
a If design basis requires active blade and yaw control to limit loading conditions.
b Implied but not explicitly stated.
c No for fixed structures; des, fab, and inst for floating structures.

the facilities. These conditions are parallel to those in the offshore
oil and gas industry during the mid-1970s. The NRC study recom-
mended that USGS implement a third-party verification system and
an advisory board to assist it in establishing a framework for the CVA
program.
The use of an advisory board by BOEMRE would be valuable in identi-
fying the interrelationship between goal-based standards and more pre-
scriptive standards and in establishing the framework for CVA assessment
to determine adequacy of design, fabrication, and installation details in
meeting the goal-based standards.
The use of goal-based standards does not alter the intent or the scope of
a CVA; instead, it introduces an additional set of high-level targets that can