FOREIGN DESIGN STANDARDS AND PRODUCTS
Foreign Design Standards. Navy Crane Center (NCC) policy is to accept
foreign design standards and engineering practices of the major industrial
countries, provided they are accompanied by satisfactory explanation and are
correlated with corresponding U.S. standards and practices. The successful
worldwide marketing and use of the standard products of such foreign countries
provides hard evidence of their sound design workmanship. In general, the quality
of engineering and design factors are consistent with those of U.S. industry. It
is also prudent to permit foreign designers and manufacturers to follow their
established practices and techniques, in which they are skilled, rather then force
them to work to unfamiliar requirements. It must also be noted that some crane
types and components are available only from foreign sources.
Federation Europeenne De La Manutention. Section I, Heavy Lifting
Equipment, of Federation Europeenne De La Manutention (F.E.M./I), Rules for the
Design of Hoisting Appliances, is the European standard applicable to the design
of all main crane types described in this handbook, except the mobile cranes. It
was first published in 1962 and has been widely used in many countries. It
requires the procuring activity to specify the "class of utilization" for the
structural design and the "state of loading" for each mechanism or drive.
Application of this standard to the design of any crane must be approved by NCC.
Translation and Engineering Units. All design calculations and drawings
that use foreign language and nomenclature must include corresponding English
equivalents. Metric units may be used for both calculations and shop drawings,
but they must include conversions to English units; in the case of calculations,
only the initial inputs and final results need to be so converted.
Professional Credentials. Professional training and accreditation of
foreign engineers may vary in some aspects from those in the U.S., but they are
comparable and entirely satisfactory for the design work in which they engage.
NCC reviews academic records and experience resumes and approves assignments of
key design engineers for Navy crane projects to ensure competent execution of the
Materials. Mechanical properties and quality standards of common
construction materials of foreign sources closely resemble those of ASTM and other
U.S. standards. NCC reviews and approves all material specifications of foreign
sources for use on Navy crane projects.
Commercial Grade Dedication. This term is used to identify items of
segregated material obtained under a standard or specification ("commercial
grade") which does not provide the overall quality of material required by the
crane specification, but from which individual items are selected by inspection
and testing, that are proved to possess the required properties and
characteristics. The inspection, testing, and segregating of such materials are
normally performed by the distributor/supplier to the crane manufacturer; however,
they may also be performed by the crane manufacturer. In either case, accurate
documentation and strict inventory control are mandatory. Commercial grade
dedication is most applicable to structural steel and shafting, but may be
accepted for other products.