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DNV-OS-D101 Marine and Machinery Systems and Equipment
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Ch.1 Sec.1
A. General
Ch.1 Sec.1
A 100 Introduction
Ch.1 Sec.1 A
101 This offshore standard provides principles, technical requirements
and guidance for design, manufacturing and installation of marine
and machinery systems and equipment for mobile offshore units and floating
offshore installations.
Ch.1 Sec.1 A
102 The requirements of this standard are in compliance with relevant
parts of SOLAS Ch. II-1 and the IMO MODU Code.SOLAS references are as quoted in MODU Code 2009 and fulfil
class requirements. Note that for compliance with flag state requirements,
later amendments may be applicable.
Ch.1 Sec.1 A
103 The standard has been written for general world-wide application.
Governmental regulations may include requirements in excess of the
provisions by this standard depending on the size, type, location
and intended service of the offshore unit or installation.
Ch.1 Sec.1 A
104 The objectives of this standard are to:
| — | provide an internationally acceptable
standard of safety by defining minimum requirements for offshore marine
and machinery systems |
| — | serve as a contractual reference document between suppliers
and purchasers |
| — | serve as a guideline for designers, suppliers, purchasers
and regulators |
| — | specify procedures and requirements for units or installations
subject to DNV certification and classification. |
Ch.1 Sec.1
A 200 Application
Ch.1 Sec.1 A
201 The requirements of this standard are applicable for mobile
offshore units and floating offshore installations of the ship-shaped,
self-elevating and column-stabilised design types, but may also
be applied to other types of floating constructions, as applicable.
Ch.1 Sec.1 A
202 The requirements in this standard apply to marine piping systems,
machinery piping systems and marine machinery systems, which are
defined as systems serving the marine systems on a offshore unit
or installation and not primarily intended for operation in drilling
or hydrocarbon production service or dedicated auxiliary systems. Interfaces
between such systems and marine systems should be identified and
a specification break defined.Guidance note:
Piping and equipment for drilling and drilling related auxiliary
systems are addressed in DNV-OS-E101.
Piping and equipment for hydrocarbon production and production
related auxiliary systems are addressed in DNV-OS-E201.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.1 A
203 Piping and equipment in connection with hydrocarbon storage
(including, product piping, inert gas system, gas freeing and venting
system and crude oil washing system) are addressed in the Rules
for Classification of Ships Pt.5 Ch.3. The additional requirements
to class III piping in this standard shall be applied.Reference to Ship Rules is conditioned
that there is no coincident production and tank inspection. For
units subject to in-service inspection of the cargo system during
production, additional requirements are given in DNV-OS-A101 Sec.
7 or 9 as applicable.
Guidance note:
Some systems used for typical tank ship applications, (e.g.
cargo piping, ballast systems, firewater systems), need to be especially
considered, for example with respect to fabrication quality and
support arrangement, when evaluated for use on offshore installations
in view of differing operational conditions and overall safety and
maintenance philosophy. ---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.1 A
204 Piping and equipment in connection with LNG storage are addressed
in DNV-OS-C503 "Concrete LNG Terminal Structure and Containment
Systems" and Rules for Classification of Ships Pt.5 Ch.5.
Ch.1 Sec.1 A
205 Hydrocarbon loading/offloading systems are addressed
in DNV-OS-E201.
Ch.1 Sec.1 A
206 The requirements of this standard may also be applied to equivalent
areas of fixed offshore installations.
Ch.1 Sec.1 A
207 Units or installations with ballast water treatment systems
installed in order to meet the requirements of the Ballast Water
Management Convention shall follow the requirements of Ship Rules
Pt.6 Ch.18 Sec.4.
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