DNV 2.7-1 培训资料

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DNV 2.7-1 培训资料Introduction
This Standard for Certification was first published in May，
1989 as "DNV Certification note 2.7-1 Offshore Freight Con-
tainers". It was prepared because other regulations at the time，
whether international codes， national requirements or rules
published by Det Norske Veritas， did not specifically cover
offshore containers. A revised Certification Note was issued in
May 1995. The basic strength and design requirements from
the original edition were retained.
Many other standards， codes and regulations exist for contain-
ers， container-like units and related types of equipment. Inter-
national standards， codes and regulations considered relevant
have been taken into account when preparing this Standard for
Certification. The most important of these are IMO's circular
MSC/Circ.860 and EN 12079. In 1991 the European Commit-
tee for Standardisation， CEN， started developing a European
Standard (EN) on offshore containers. Technical committee
CEN TC 280 prepared EN 12079， which was issued in 1999，
and a revised edition will be issued in 2006. The requirements
for design， testing and production of offshore containers in EN
12079 are directly based on DNV Standard for Certification
2.7-1. The relationship between this Standard for Certification
and other standards， codes and regulations is outlined in sub-
chapter 1.2.
The Standard for Certification is concerned with certification
of all types of offshore containers as transport units. The three
typical phases of transport are: shoreside (e.g. by fork lift
truck)， by supply vessel and lifting to and from offshore instal-
lations. The Standard for Certification includes design require-
ments related to all three phases.
Under conditions in which offshore containers are often trans-
ported and handled， the "normal" rate of wear and tear is high，
and damage necessitating repair will occur. However， contain-
ers designed and certified according to this Standard for Certi-
fication should have sufficient strength to withstand the
normal forces encountered in offshore operations， and not suf-
fer complete failure even if subject to more extreme loads.
The most important changes are: