DNV OFFSHORE CLASSIFICATION SERVICES

lickforkabsorbingOil and Offshore

Nov 8, 2013 (3 years and 7 months ago)

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Slide 1
DNV
OFFSHORE
CLASSIFICATION
SERVICES
Slide 2
Classification

Classification is a system
for safeguarding life,
property and the environment due to operational
consequences

Classification implies a process of verifying
objects and systems against a set of requirements

For Mobile Offshore Units, DNV Rules and
Standards apply

Classification aims to verify that the required Rule
standard is built in, observed and maintained
throughout the unit’s life -
Lifetime Approach
DNV-
A leading classification society:
Slide 3

Close to 17% of the world fleet to class
•21% of ships ordered in 2004
•70% of maritime fuel testing
•Cutting edge use of ICT
•Acknowledged with ‘Best Quality’
•Lowest Port Detention Rate
•Authorised
b
y 130
National
Maritime Authorities
Slide 4
Why Offshore Classification ?

Basis for registration in national register and flag –
required by IMO for international voyage

Represents internationally accepted safety standard

Known and recognised by the maritime industry

Normal requirement for insurance
Slide 5
Underwrites wanted assurances
Slide 6
Why Offshore Classification ?

Represents independent/third party assessment of
the classed unit

Global network provides survey capability where
needed

Knowledge of and experience with local
regulations
Slide 7
-
Lifetime Approach
Classification
A
A
pprobasjon
pprobasjon
B
B
yggetilsyn
yggetilsyn
C
C
MC
MC
D
D
riftsoppf
riftsoppf
ø
ø
lging
lging
Experience feed
Experience feed
-
-
back
back
Work processes-
what happens?
Slide 8
DNV
stations
DNV
Service
Centres
Yard
Owners
PMF
PMA
Vendors
CMC surveyors
Specialist
sections
Field
surveyors
OCT Høvik
Design
Documents
Approved
docs
Interim
Certificates
documents
DVRs
certificates
certificates
DFI
IIP
Renewed
Class
Certificate
Data Base
Slide 9
Role of Classification

Classification has gained world wide recognition as an
adequate level of safety and quality, i.e. provides a
sound basic safety standard

Classification serves as a verification system for a
number of parties who have special interest in the
safety and quality of offshore units, such as:

National Authorities/Flag states

Insurance underwriters

Owners

Building yards and sub-contractors

Finance institutions

Charterers
Slide 10
DNV Offshore Class:
Hierarchy of Classification Certificates
System
APPROVAL
Material
CERTIFICATES
CLASS
CERTIFICATE
Component
CERTIFICATES
DET NORSKE VERITAS
It is hereby certified that
Det Norsk
e Veritas
has classified the
Floating Production, Storage and
Offloading Unit and that it is
built in acco
rdance
w
ith the
Societies Rules for
Offshore Units, April 2004
DET NORSKE VERITAS
It is hereby cert
ified that
Det Norske Veritas
has reviewed the
NAM F3
Concrete Gravity Base
Platform
and that it is built in
accordance with the Societies
Rules for Fixed Offshore
Installations, July 1992
DET NORSKE VERITAS
It is hereby certified that
Det Norsk
e Veritas
has reviewed the
NAM F3
C
oncret
e Gravity B
ase
Platform and that it is built in
accordance with the Societies
Rules for Fixed Off
shore
Inst
allations, July 1992
DET NORSKE VERITA
S
It is
hereby cer
tified that
Det Nor
sk
e Veritas
has reviewed the
NAM F3
Concrete Gr
av
ity Base
Platform and t
hat it is built in
accordance with the Societies
Rules for Fixed Offshore
Installat
ions
, July 1992
DET NORSKE VERITAS
It is hereby certified that
D
et Norsk
e Veritas
has reviewed the
NAM F3
Concret
e Gravity B
ase
Platform and that it is built in
accordance with the Societies
Rules for Fixed Offshore
Inst
allations, July 1992
DET NO
RSKE VERITA
S
It
is herb certified t
hat
Det Norske Ve
ritas

h
as reviews the
NAM F3
Concrete Gr
avity Base
Platform and that it is built in
accordance with the Soci
eties
Rules for Fixed Offshore
Installations, July 1992
DET NORSKE VERITAS
It is hereby certified that
De
t No
rske Veritas
has reviewed the
NAM F
3
Concrete Gravit
y Base
Platform and that it is built in
accordance with the Societies
Rules for Fixed Offshore
Installations, July 1992
DET
N
ORSKE
V
ERITAS
It is hereby certified that
Det Norske Veritas
has reviews t
he
NAM F3
Con
cr
ete Gravi
ty Base
Platform and that it is built in
accordance wit
h the Societies
Rules for Fixed Offshore
Installations, July 1992
DET NORSKE VERITAS
It is hereby certified tha
t
D
et Norsk
e Veritas
has review
s the
NAM F3
Concret
e Gravity B
ase
Platform and that it is built in
accordance with the Societies
Rules for Fixed Offshore
Inst
allations, July 1992
DET NORSKE VERITAS
It is herby certi
fied that
Det Norske Veritas
has review
ed the
NAM F3
Concret
e Gravity B
ase
Plat
form and that it is built in
accordance with the Societies
Rules for Fixed Offshore
Installations, July 1992
DE
T NORSK
E VERITAS
It is hereby certified that
Det Norske Ve
rit
as
has reviews th
e
NAM F3
Concrete Gravity Base
Platform and that it is built in

accordance with the
Societies
Rules for Fixed Offshore
Installatio
ns, July 1992
DET NORSKE VERITAS
It is hereb
y certified that
Det Norske Verit
as
has revi
ewed t
he
NA
M F3
Concrete Gravity Base
Platform and that it is bu
ilt in
accordance with the Societies
Rules for Fixed Offshore
Installations, July 1992
DET NORSKE VERITAS
It is hereby certified that
Det Norske Veritas
has review
ed the
NAM F3
Concret
e Gravity B
ase
Platform and that it is built in
accordance with the Societies
Rules for Fixed Offshore
Installations, July 1992
Slide 11
DNV Offshore Codes
Technical Basis for Classification

Service Specifications

Offshore Standards

Recommended
Practices

Design

Construction

Operation

Internationally recognised codes
A three level
publication
hierarchy providing
a flexible and user-
friendly menu of
services, technical
standards and
practices meeting
individual needs of
oil and gas industry
stakeholders.
Slide 12
Service Specifications -
Classification
Classification (OSS-100 series)

DNV-OSS-101: Rules for Clas
sification of
Offshore Drilling and Support Units

DNV-OSS-102: Rules for Clas
sification of
Floating Production and Storage Units

DNV-OSS-103: Rules for Clas
sification of
LNG/LPG Floating Production and Storage
Units or Installations

DNV-OSS-121: Classification using
Performance Criteria determined By Risk
Assessment Methodology
OFFSHORE SERVICE SPECIFICATION
Slide 13
Offshore Standards -
Structures

DNV-OS-C101: Design of Offshore Structures, General
(LRFD method)

DNV-OS-C102: Structural Design of Offshore Ships

DNV-OS-C103: Structural Design Column-stabilised
Units (LRFD method)

DNV-OS-C104:
Structural Design of Self-elevating Units
(LRFD method)

DNV-OS-C105: Structural Design of Tension-leg Units
(LRFD method)

DNV-OS-C106: Structural Design of Deep-draught Units
(LRFD method)

DNV-OS-C201: Structural Design of Offshore Units
(WSD Method)
OFFS
HOR
E STANDARD
Slide 14
Pipeline:
OS-F101
RP-F101
RP-F104
RP-F105
RP-F106
RP-F107
RP-F108
Risers:
OS-F201
RP-F201
RP-F202
Wellheads:
OS-E101
Mooring:
OS-E301
SEMI-SUB
Safety:
OS-A101
Materials:
OS-B101
Hull:
OS-C101
OS-C103
RP-C103
OS-C-401
Stability:
OS-C301
Marine/Machinery:
OS-D101
Electrical:
OS-D201
Instrumentation:
OS-D202
Fire Safety:
OS-D301
Production Plant:
OS-E201
Drill Plant:
OS-E101
Helideck:
OS-E401
FPSO
Safety:
OS-A101
Materials:
OS-B101
Hull:
OS-C101
OS-C102
RP-C102
OS-C-401
Stability:
OS-C301
Marine/
Machinery:
OS-D101
Electrical:
OS-D201
Instrumentation:
OS-D202
Fire Safety:
OS-D301
FSO
Safety:
OS-A101
Materials:
OS-B101
Hull:
OS-C101
OS-C102
RP-C102
OS-C-401
Stability:
OS-C301
Marine/Machiner
y:
OS-D101
Electrical:
OS-D201
Instrumentation:
OS-D202
Fire Safety:
OS-D301
Anchors:
RP-E301
RP-E302
Chain:
OS-E302
Wire rope:
OS-E303
DNV Offshore Codes -
Global standards, practices and related services
covering many areas and aspects of offshore field development and operation
Slide 15
DNV Offshore Codes -
availability

DNV Publications electronically available

on internet
www.dnv.com

Select “Technology Services”
and “Offshore Rules and Standards
online”
from short-cut menues

from DNV Exchange (left hand menu)

Changes summarized on 1st page of new editions
Slide 16
DNV Offshore Class:
Class Notations

Scope of classification is determined by mandatory
and additional class notations, e.g.

1A1
Ship-shaped Oil Production and Storage Unit(N)
POSMOOR, ECO, CRANE, HELDK-SH, PROD(N)
•Special
system and
equ
ipment
notations
Basic
Design and
Service
notations
Main
character
of
class
Construction
symbol
Items under consideration for next revision of OSS-101:
New MOU Class Notation CLEAN
Slide 17
Voluntary environmental class CLEAN, covering:

Mud –
green fluid unless special systems

Hydraulic ring mains

Anchoring systems wrt
hydraulic leaks & heavy grease

Food

Drilling system discharges / haz
drains

Grey & black water

Riser & drill pipe deck draining

MARPOL Annex I, IV, V, VI (oil, sewage, garbage, air)

Deck drains

Machinery over the sides, e.g. cranes

Biocides / water treatment
Slide 18
Items under consideration for next revision of OSS-101/102 :
New MOU Class Notation ARCTIC
Voluntary Class Notation ARCTIC, covering:

Design temperature (steel and equipment)

Stabilit
y (ice loads)

Materials in structures exposed to low ambient air temperatures

Local hull structures exposed to ice loads

Rudders, steering gears, propellers

Protection of outdoor areas

Steam-generating equipment

System & equipment suitability:
–L
i
f
e
-
s
a
v
i
n
g

Helideck
–W
i
n
c
h
e
s

Fire fighting

Cranes
–E
t
c
.

Slide 19
DNV Offshore Class:
Relation Maritime Authorities vs. Class
National Laws and Regulations
CLASS RULES
STATUTORY
REGULATIONS
Statutory Services
based on delegated
authority
Control by Class
Control by
Authorities
Slide 20
DNV Offshore Class:
Extensive statutory experience

Authorised by more than 130 flag administrations to carry
out surveys and, in most cases, issue statutory certificates
on their behalf such as

SOLAS Certificates

IMO MODU Code certificate

Load line certificates

Tonnage Certificates

Safety Management Certificates

Oil Pollution Prevention Certificates

ILO Certificates

ISSC
Slide 21
Owner, Operator
Owner, Operator
DNV-Class
Requirements
Requirements
Flag, Shelf, other
DNV Offshore Class:
Verification of Additional Requirements based on Class
Work Scope
Work Scope
Slide 22
DNV Offshore Class:
Tailor-made in-service inspection programs (IIP)

IIP for hull structures of MOUs, highlighting

Areas and details to be surveyed by visual

and close visual inspection as well as NDT

Frequency of the various types of

inspection

Relevant data from previous surveys

Experience from similar structures

Based on design calculations and relevant information
from fabrication phase.

In addition, qualitative consequence considerations in
relation to possible failure modes are applied for
determination of extent and frequency of inspection.
Slide 23
DNV Offshore Class:
Systematic collection and handling of experiences

Reported damages such as cracks, serious corrosion,
indentations etc. logged in central damage data base

currently holds more than 4000 entries.

Data balanced against other sources of information and
are used for:

Trend analysis

Highlighting of typical defects

Initiation of safety alerts and corrective actions

Modification of survey frequency and extent as defined in the In-
service Inspection program

Improvement of classification rules
Slide 24
Classification/verification
PETROBRAS
P-51/52-
a global effort
•Classification Services
according to notation 
1A1
Column-stabilised
Oil
Production Unit PROD
POSMOOR:
•Design Review
•Fabrication Survey -
6 sites
(Singapore & Brazil)
•Certification of Material &
Compo
nents
•Certification of Generation
Modules
•Certification of Compression
Modules
P-52 Pontoons in KFE