9.1 Repairs or alterations to the hull, machinery
or equipment, which affect the safety of the vessel shall not be made
without the approval of the Administration, except in an emergency.
Drawings or written specifications of proposed alterations should
be submitted to the Administration which may require that an inspection
and test be carried out.
9.2 Safe working practices shall be observed
in the planning and execution of any alterations, repairs or other
operations involving riveting, welding, burning or other fire producing
actions aboard a vessel particularly where these take place adjacent
to fuel tanks or apparatus connected to the fuel tanks.
9.3 Repairs, alterations and modifications of
a major character and outfitting related thereto on existing vessels
shall meet the requirements prescribed for a new vessel to such extent
as the Administration deems reasonable and practicable. The owner
shall inform the Administration of the proposed alterations and modifications
before such alterations and modifications are carried out.
9.4 For the purpose of the Code, the following
repairs, alterations and modifications shall be recognized as being
of "major character":
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(a) any changes that substantially alter the dimensions
of the vessel;
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(b) any changes that substantially increase a
vessel's service life; or
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(c) any conversions that alter the functional
aspects of the vessel.