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DNV-OSS-102 Rules for Classification of Floating Production, Storage and Loading Units
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Ch.1
SECTION 5
Retention of ClassCh.1 Sec.5
A. Conditions for Retention of
Class
Ch.1 Sec.5
A 100 General requirements
Ch.1 Sec.5 A
101 The unit shall be adequately manned, and the hull, machinery,
systems and equipment shall be competently handled at all times.
Ch.1 Sec.5 A
102 Operation of the unit shall comply with the assumptions and
conditions stated in the "Appendix to the Class Certificate" and
in applicable operating manuals.
Ch.1 Sec.5 A
103 The unit, its hull structure, machinery, systems and equipment
shall be maintained at a standard complying with the requirements
of the rules.
Ch.1 Sec.5 A
104 Installed systems and equipment carried onboard in excess
of the minimum required for main class shall either be maintained
to applicable standards, or be removed or disconnected in such a
way as to ensure that the installed system or equipment cannot be
used. Installed diving systems are subject to special provisions
as given in Rules for Classification of Ships Pt.6 Ch.1 Sec.4 and
Pt.7 Ch.1 Sec.6 I. These provisions include transferable diving
systems installed temporarily.
Ch.1 Sec.5 A
105 Temporary systems and equipment shall comply with relevant
requirements in accordance with the assigned class notations of
the unit.
Ch.1 Sec.5 A
106 The statutory certificates required by applicable international
conventions and/or national legislation shall be valid
at all times and shall be issued by the Society, the flag administration
itself, or by a third party approved by the flag administration,
within the limitations set out in Sec.2
C.Ch.1 Sec.5
A 200 The customer's obligations
Ch.1 Sec.5 A
201 In order to retain a unit's class with the Society,
the customer shall:
| — | at all times, ensure that the
unit is maintained to the rule standard |
| — | submit complete and correct information related to the
Unit and its use, which is of significance to the Society for its
assessment of the condition of the unit in relation to the rules |
| — | ensure that the unit is competently handled |
| — | subject the unit to unscheduled surveys when deemed
necessary by the Society |
| — | rectify deficiencies and carry out any Conditions of
Class or Retroactive Requirement specified by the Society |
| — | subject the unit to surveys as required by the rules,
and provide the necessary facilities for safe execution of surveys |
| — | submit complete and correct information on the ownership
and management of the unit, addresses and corresponding administrative
information pertinent to the register of vessels |
| — | submit correct information on the registration of the
unit |
| — | keep onboard and ashore a set of as-built drawings/documentation
including subsequent alterations/conversions |
| — | pay all fees and expenses due to the Society. The owner
has, together with managers, charterers and operators, a joint and
several liability for any such fees and expenses. If a request for
services is made by any other party than the owner, that party will,
in addition to the owner, be responsible for the payment of the
relevant fees |
| — | notify the Society when the unit is laid up or otherwise
taken out of service for a period of more than 3 months. |
Ch.1 Sec.5 A
202 If the hull structure, machinery, systems or equipment covered
by classification sustain damage to such an extent that it may be
presumed to lead to a Condition of, the Society shall immediately
be informed. The unit shall be surveyed at first opportunity or
according to instructions from the Society. The survey shall be
of an extent considered necessary by the attending surveyor for
ascertaining the extent of the damage.
Ch.1 Sec.5 A
203 In case inspections by port or flag authorities reveal deficiencies
related to certificates issued by DNV, the customer shall immediately
notify the Society.Ch.1 Sec.5
A 300 Maintenance
Ch.1 Sec.5 A
301 The customer shall ensure that the unit, its hull structure,
machinery, systems and equipment at all times is properly maintained.Guidance note:
Maintenance of the hull structure, machinery, systems and
equipment is normally to be in accordance with applicable recognised
standards in the industry or in accordance with procedures recommended
by the manufacturer.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.5 A
302 The unit shall have implemented a maintenance system. The
maintenance system shall ensure that:| — | inspections and maintenance
are carried out at defined intervals |
| — | any defect is reported with its possible cause, if known |
| — | appropriate correction or repair action is taken |
| — | records of these activities are maintained. |
Ch.1 Sec.5 A
303 Replacement components and systems shall be delivered with
certificates and documentation as required by the rules for the
original component or systemCh.1 Sec.5
B. Classification Society Involvement
Ch.1 Sec.5
B 100 Applicable rules
Ch.1 Sec.5 B
101 Units built under the supervision of the Society shall in
general be maintained and repaired in compliance with the rules
to which it was constructed, except in cases mentioned in B602.
Ch.1 Sec.5 B
102 For units built under the supervision of another IACS member
society, the Society's rules in force at the same date
as those enforced by the other society will be applied. If such
date is not known the Society's rules in force at the "date
of build" will be applied.
Ch.1 Sec.5 B
103 For units other than those covered by 101 and 102, the Society's
rules for new units in force at the time of entry into class will
be applied
Ch.1 Sec.5 B
104 Amendments to the rules may be made retroactive.
Ch.1 Sec.5 B
105 In cases where rule amendments are made applicable to existing
units at the first annual, intermediate or renewal survey after
a specified date, or after the unit reaches a specified age, the
expiry date of the related survey time window shall determine when
the rule amendments become effective.Ch.1 Sec.5
B 200 Surveys
Ch.1 Sec.5 B
201 The objective of a survey shall be to ascertain that the unit,
its hull structure, machinery, systems and equipment are in compliance
with the rules and suitable for continued safe and reliable operation.
Ch.1 Sec.5 B
202 A survey may consist of a combination of visual inspections,
audits, measurements, functional testing, non-destructive testing
and review of maintenance and other relevant records.
Ch.1 Sec.5 B
203 The minimum extent of prescribed periodical surveys are given
in Ch.3. The Society may increase the extent of a survey when deemed
necessary in order to ascertain the condition of the unit.Ch.1 Sec.5
B 300 Conditions and Memoranda
Ch.1 Sec.5 B
301 A Conditions of Class (CC) will be imposed for the following:| — | repairs and/or renewals
related to damage, defect or breakdown that are sufficiently serious
to affect Classification (e.g. grounding, structural damages, machinery
damages, wastage over the allowable limits etc.) |
| — | supplementary survey requirements |
| — | temporary repairs. |
Guidance note:
When the Society has been authorised to carry out a statutory
survey, a Condition on behalf of the flag Administration (CA) will
be imposed for specific measures, repairs or surveys that should
be carried out within a specific time limit in order to retain the
statutory certificate.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.5 B
302 The Society will issue a Conditions of Class (CC) when deemed
necessary to carry out examinations in order to ascertain whether
damage, a defect or a deficiency has been sustained or is imminent.
Ch.1 Sec.5 B
303 A Condition of Class (CC) may contain the following:| — | a description of the deficiency,
defect, damage or the examination required |
| — | required action |
| — | due date for the required action to be completed |
| — | possible temporary requirements imposed until the required
action has been completed. |
Alternatively the CC may refer to a survey report for above
details. An approved repair method may be recommended as part of
the required action.
Ch.1 Sec.5 B
304 If a Condition of Class (CC) seriously affects the unit's
safety and reliability, immediate action will be required. Otherwise
a time limit will be given for the action to be completed.
Ch.1 Sec.5 B
305 A Condition of Class (CC) will be deleted when the Society,
through a survey or received information, has been satisfied that
requested action has been satisfactory completed.
Ch.1 Sec.5 B
306 For information related to the unit, its machinery and equipment
or to rule requirements, the Society may issue an Memorandum to
Owner (MO). A MO may supplement information given otherwise, e.g.
in the Appendix to the class certificate or the Society's "Register
of Vessels".
Ch.1 Sec.5 B
307 An MO may be used in the following cases:
| — | exemptions from rule requirements |
| — | accepted deviations from rule requirements |
| — | limitations on the use of the unit or its equipment |
| — | defects or deficiencies of no concern to class |
| — | deleted class notations |
| — | equipment in excess of class requirements disused |
| — | information related to agreed survey arrangements. |
Ch.1 Sec.5 B
308 Outstanding findings may be recorded as Conditions of Class
or Memorandum to Owner. They will be given in writing at completion
of surveys. Findings may also be communicated verbally during the
course of surveys. Findings that have been corrected before the
survey has been completed will not be recorded as CC.
Ch.1 Sec.5 B
309 The Society may at any time modify a Condition of Class or
Memorandum to Owner if considered appropriate. The owner will be
notified accordingly.
Ch.1 Sec.5 B
310 Conditions of Class or Memorandum to Owner are recorded in
the unit's class status from where they will be deleted
when no longer valid. The owner will be notified accordingly.
Ch.1 Sec.5 B
311 The owner will be informed of Retroactive Requirements.Ch.1 Sec.5
B 400 Survey reports and survey
status
Ch.1 Sec.5 B
401 The surveyor will prepare to the customer reports on surveys
carried out.
Ch.1 Sec.5 B
402 Survey reports may contain the following information, to the
extent applicable in each case:| — | types of surveys carried out |
| — | certificates issued, endorsed or extended |
| — | damage, defects and/or deficiencies observed |
| — | confirmation that repairs have been completed and accepted
by the surveyor |
| — | Conditions of Class (CC) issued or deleted |
| — | Memorandum to Owner (MO) issued or deleted |
| — | Retroactive Requirements (RR) issued or deleted. |
Ch.1 Sec.5 B
403 The Society will make class status reports available to customers
on the Society's Internet website.It is the customer's responsibility to obtain this
information from the Society's Internet website. Survey
and certificate status reports, on paper, may be distributed upon
request.
Ch.1 Sec.5 B
404 Any document issued by the Society in relation to surveys
performed reflects the condition of the unit at the time of the
survey only.
Ch.1 Sec.5
B 500 Damage and repairs
Ch.1 Sec.5 B
501 Repairs shall in general be carried out in such a way that
the original design and scantlings are restored. Possible design
modifications or reduced scantlings based on current rules which
are less stringent than those originally enforced, shall be approved
by the Society before the repairs are carried out.
Ch.1 Sec.5 B
502 Repairs to the hull structure, machinery, systems or equipment
covered by the rules shall be carried out by qualified personnel
and in compliance with applicable rules, with good engineering practice
and under the supervision of a surveyor.Guidance note:
Guidelines for hull repairs can be found in Classification
Note No. 72.1. ---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.5 B
503 Repairs as stipulated in 502 may be carried out without the
attendance of a surveyor provided a repair plan is accepted by the
Society in advance. A surveyor shall be called for acceptance of
such repairs when completed.Ch.1 Sec.5
B 600 Conversions and alterations
Ch.1 Sec.5 B
601 Conversions or alterations of units shall in general comply
with the rules applicable at the time of class assignment. If current
rules are less stringent than those originally in force, then the
current rules may be applied.
Ch.1 Sec.5 B
602 When conversion or alteration involves modification which:| — | substantially alters the dimensions or carrying
capacity of the unit (e.g. ³ 5% change in the
unit's displacement), or |
| — | changes the type of unit, or |
| — | changes the main class of the unit, |
the Society will decide on the rules to be applied.
Ch.1 Sec.5 B
603 If the hull structure, machinery, systems or equipment shall
be converted or altered, the changes shall be documented and be
approved in the same manner as for new unit.
Guidance note:
Alterations to the hull structure, machinery, systems and
equipment made possible by amendments of the applicable rules may
be undertaken provided the general safety and reliability level
required for retention of class will be maintained.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.5 B
604 Conversion or alterations shall take place under the supervision
of a surveyor. Ch.1 Sec.5
C. Endorsement and Renewal of
the Class Certificate
Ch.1 Sec.5
C 100 Endorsement of the class certificate
Ch.1 Sec.5 C
101 The class certificate will be endorsed upon satisfactory completion
of annual, intermediate and renewal surveys for main class. The
class certificate will not be endorsed unless the following has
been dealt with and accepted by the Society:| — | overdue periodical class surveys |
| — | overdue continuous survey items |
| — | overdue Conditions of Class |
| — | overdue Retroactive Requirement. |
Guidance note:
In the case where an overdue survey is related to an optional
class notation, the class certificate may be endorsed provided the
relevant optional class notation is suspended.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.5 C
102 When the class certificate is endorsed at completion of renewal
surveys, the surveyor may extend its validity as necessary but not
more than to a date 5 months after the completion date, or after
the expiry date of the class certificate, whichever comes first.
Ch.1 Sec.5 C
103 In the case where postponement of the renewal survey has been
granted upon the customer's written request, the surveyor
will endorse the class certificate and extend its validity, but
not more than 3 months beyond the expiry date of the class certificate.
Ch.1 Sec.5 C
104 In the case where the main class annual survey is commenced
prior to the defined time window, the survey must be completed not
more than 6 months after the date of commencement. In such cases
the certificate will be endorsed for advancement of anniversary
date (due date) for the subsequent annual surveys.Guidance note:
Expiry date of the class certificate may remain unchanged,
but additional surveys may be required so that the prescribed survey
intervals are not exceeded.---e-n-d---o-f---G-u-i-d-a-n-c-e---n-o-t-e---
Ch.1 Sec.5
C 200 Renewal of the class certificate
Ch.1 Sec.5 C
201 A new class certificate will replace the existing class certificate
when renewal survey has been satisfactory completed and the Society
is satisfied that the requirements for retention of class have been
met.
Ch.1 Sec.5 C
202 The new class certificate will be valid to a date not exceeding
5 years from:| — | the expiry date of the existing
certificate when the renewal survey has been completed within 3
months before the expiry date of the existing certificate, or |
| — | the expiry date of the existing certificate when the
renewal survey has been completed after the expiry date of the existing
certificate, or |
| — | the completion date of the renewal survey when the renewal
survey has been completed more than 3 months before the expiry date
of the existing certificate, or |
| — | the completion date of the renewal survey when the renewal
survey has been commenced more than 15 months before the expiry
date of the existing certificate. |
Ch.1 Sec.5 C
203 In cases where postponement of a renewal survey has been granted,
the new class certificate will be valid to a date not exceeding
5 years from the expiry date of the existing certificate before
the extension was granted.
Ch.1 Sec.5 C
204 In cases where the renewal survey is carried out concurrently
with a conversion as defined in B602, the validity of the new certificate
will be 5 years from the date of completion of the conversion, if
so decided by the Society.Ch.1 Sec.5
D. Suspension and Withdrawal
of Class
Ch.1 Sec.5
D 100 General
Ch.1 Sec.5 D
101 Class may be withdrawn at any time if the Society finds it
justified.
Ch.1 Sec.5 D
102 The Society may suspend or withdraw a unit's class
where the conditions for retention of class, have been violated
(see A).
Ch.1 Sec.5 D
103 The decision to suspend or withdraw a unit's class
is made by the Society. However, in cases of automatic suspension,
see 201 and 202, no individual evaluation is made. Suspension or
withdrawal of class may take effect immediately or after a specified
period of time. In special cases, the suspension or withdrawal of
class may be made with retroactive effect (see 204).
Ch.1 Sec.5 D
104 If the violation only affects requirements related to optional
class notations, the suspension or withdrawal may be limited to
these class notations only.
Ch.1 Sec.5 D
105 When class is suspended or withdrawn the Society will:| — | notify the customer in writing |
| — | notify the flag administration |
| — | make an entry to this effect in the Society's "Register
of Vessels" |
| — | make the information publicly available. |
In the cases of class suspension, a time limit will be given
for when the class will be withdrawn.
Ch.1 Sec.5
D 200 Suspension of class
Ch.1 Sec.5 D
201 The class will automatically be suspended with immediate effect
if the renewal surveys for hull, machinery, systems and equipment
related to main class are not completed before the expiry date of
the class certificate, and no postponement has been granted or unless
the unit is under attendance for completion of the survey.
Ch.1 Sec.5 D
202 If the annual or intermediate surveys for main class are not
completed within 3 months from the anniversary date of the class
certificate, the class is automatically suspended with immediate
effect, unless the unit is under attendance for completion of the
survey.
Ch.1 Sec.5 D
203 The Society may decide to suspend a unit's class
if the Unit is deemed to be unable to continue safe and reliable
operation, e.g. as a result of a major casualty.
Ch.1 Sec.5 D
204 In addition to the conditions laid down in 201, 202 and 203,
a unit's class may be suspended with immediate effect in
cases where:| — | repair of deficiencies has not been carried out
or otherwise dealt with in an appropriate manner, or |
| — | repair of deficiencies has not been surveyed and accepted
by the surveyor, |
| — | other requirements imposed by the Society. |
Ch.1 Sec.5 D
205 Class will not be automatically suspended according to 201
or 202 whilst a unit is laid up, provided the requirements in Ch.3
for lay-up surveys are complied with.Ch.1 Sec.5
D 300 Reinstatement following class
suspension
Ch.1 Sec.5 D
301 If the overdue surveys leading to class suspension as given
in 201, 202 and 203 or requirements as given in 204 are carried
out within the specified time, the class will be reinstated provided
the following is met:- The result of the survey is
such that all observed deficiencies are satisfactory rectified.
The Society may after consideration accept that minor deficiencies
are pending to be carried out.
- No overdue periodical surveys or overdue Conditions
of Class at that time.
Ch.1 Sec.5 D
302 The Society reserves the right to decline an application for
reinstatement of class.
Ch.1 Sec.5 D
303 When the class is reinstated, the Society will confirm this
in writing to the customer and to the flag administration.Ch.1 Sec.5
D 400 Withdrawal of class
Ch.1 Sec.5 D
401 The class will be withdrawn at the customer's request
Ch.1 Sec.5 D
402 If the overdue surveys specified in 201, 202 and 203 or required
repairs as given in 204 are not carried out within the specified
time after the class suspension, the Society will withdraw the unit's
class.
Ch.1 Sec.5 D
403 When a unit leaves port or starts operation without having
rectified a condition of class which was required to be dealt with
before leaving port or commencement of operation, the class will
be withdrawn with immediate effect.
Ch.1 Sec.5 D
404 If the Society becomes aware that a unit continues operation
with serious damage or defects in violation of class requirements,
the class may be withdrawn with effect from the time this became
known to the Society. The class withdrawal may be made retroactive.
Ch.1 Sec.5 D
405 When it is considered that a customer's failure to
comply with rule requirements is sufficiently serious or fraudulent
the withdrawal of class may, at the discretion of the Society, be
extended to include other units controlled or operated by the same
customer.
Ch.1 Sec.5 D
406 If the outstanding debt owed to the Society is not paid within
a notified date, the Society may withdraw the unit's class
with one month's written notice. This also applies when
the obligation to pay rests with a yard or with the unit's
previous owners. In special cases a shorter notice may be given.
Ch.1 Sec.5 D
407 If the customer makes a general assignment for the benefit
of his creditors or if any proceedings are commenced in court or
any order or judgement is given by any court for liquidation, winding
up of the customer, the Society may withdraw the class with immediate
effect.
Ch.1 Sec.5 D
408 For units having statutory certificates issued by third parties,
except in those cases defined in Sec.2
C100, the class may be withdrawn.Ch.1 Sec.5
D 500 Re-assignment of class following
class withdrawal
Ch.1 Sec.5 D
501 In all other cases than that given in 401, and if the circumstances
leading to withdrawal of class no longer exist, a unit's
may be re-assigned class upon written request. The extent of survey
will in such instances be decided by the Society.
Ch.1 Sec.5 D
502 The Society reserves the right to decline an application for
re-assignment of class.
Ch.1 Sec.5 D
503 A new class certificate will be issued when the survey has
been satisfactory completed and the Society is satisfied that the
requirements for retention of class have been met.
Ch.1 Sec.5 D
504 When the unit is re-assigned class, the Society will confirm
this in writing to the customer and to the flag administration and
make the information publicly available.Ch.1 Sec.5
E. Change of Owner or Manager
Ch.1 Sec.5
E 100 General
Ch.1 Sec.5 E
101 A unit shall retain class when transferred to another owner
or manager. The previous customer shall give the Society immediate
notice, in writing, of such transfers. Obligations according to
the rules shall remain with the previous customer until the Society
is in receipt of such notice, in writing. See A200.
Ch.1 Sec.5 E
102 Class notations and survey arrangements based on certification
of the management of operations will be deleted automatically when
the management of a unit is transferred.Ch.1 Sec.5
F. Force Majeure
Ch.1 Sec.5
F 100 General
Ch.1 Sec.5 F
101 If due to force majeure, the unit is not in port or in sheltered
waters when surveys become overdue the Society may allow the unit
to transit, in class, directly to an agreed discharge location and
then, if necessary, in ballast to an agreed repair facility at which
the survey can be completed. In this context the "Force
Majeure" means damage to the unit, unforeseen inability
of surveyors to attend the unit due to governmental restrictions on
right of access or movement of personnel, unforeseen delays in port
or inability to relocate due to unusually lengthy periods of severe
weather, strikes, civil strife, acts of war or other force majeure.
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