Environmental Engineering Reference
In-Depth Information
Expectations of CVAs for the Design Phase
The primary design phase activity (30 CFR 250.916) is to perform an inde-
pendent review of the design on the basis of “good engineering judgment”
to determine whether the design is suitable and will allow the system to
withstand “environmental and functional load conditions appropriate for
the intended service life at the proposed location.” The CFR indicates spe-
cific areas that must be subjected to the CVA's independent review for
both fixed and floating offshore structures; among them are loading,
stresses, and foundations. The design CVA must produce a report of
findings that identifies how and by whom the independent review was
conducted.
Expectations of CVAs for the Fabrication Phase
The primary fabrication phase activity (30 CFR 250.917) is to perform an
independent review of the fabrication on the basis of “good engineering
judgment” to determine whether the structure matches the design docu-
ments and plans. Periodic site visits to where the fabrication is taking
place are necessary. The CFR specifies several items that must be verified
by the CVA during this phase for both fixed and floating offshore struc-
tures, including fabricator quality control, material quality, welder qual-
ifications, and nondestructive testing. The fabrication CVA must produce
a report of findings that identifies how and by whom the independent
review was conducted.
Expectations of CVAs for the Installation Phase
The primary installation phase activity (30 CFR 250.918) is to perform an
independent review of the installation on the basis of “good engineering
judgment.” This entails reviewing installation plans and procedures and
witnessing the installation operations from loadout and towing to launch-
ing, uprighting, submergence, and so forth. The CVA is also responsible
for evaluating the equipment used and the record keeping that is done. The
installation CVA must produce a report of findings that identifies how and
by whom the independent review was conducted.
In each phase, the CFR emphasizes the use of “good engineering judg-
ment.” While there is no definition of this term, its use indicates a prefer-
ence for personnel with enough experience to form the basis for exercising
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