"ABS 2022规则：海上单元和结构的分类条件"

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The American Bureau of Shipping (ABS) has released the Rules for Conditions of Classification for Offshore Units and Structures for the year 2022. These rules cover the classification standards for offshore units and structures, ensuring they meet the necessary safety and quality requirements. The ABS Rules for Conditions of Classification provide guidelines for design, construction, and maintenance of offshore units to ensure they meet the highest standards of safety and reliability. The ABS Rules for Conditions of Classification - Offshore Units and Structures Part 1 includes specifications for various types of offshore units, including Mobile Offshore Drilling Units. These rules are essential for ensuring that offshore units are built and operated in a safe and efficient manner. The ABS is a leading classification society that has been providing services to the maritime industry since 1862. Their rules and standards are internationally recognized and are used by shipowners, shipbuilders, and regulatory bodies around the world. The ABS Rules for Conditions of Classification are regularly updated to reflect the latest technological advancements and industry best practices. These rules are essential for ensuring the safety of offshore units and structures, as well as protecting the environment. In conclusion, the ABS Rules for Conditions of Classification for Offshore Units and Structures are a vital resource for the maritime industry. By adhering to these rules, offshore units can operate safely and efficiently, ensuring the protection of both personnel and the environment.

warranties as to quality, item of material, equipment, machinery, software, monitoring, artificial

intellicence or other decision making tools. The issuance of the AUTONOMOUS or REMOTE-CON

notation does not relieve the owner or operator of the unit of statutory manning requirements nor of its

non-delegable duty to maintain the unit in a seaworthy condition or to maintain a proper watch. Any

adjustments to the unit's manning requirements based on the AUTONOMOUS or REMOTE-CON

notation requires the prior approval of the flag Administration. ABS makes no warranty of any kind that

the materials reviewed, or any products or results of the use thereof, will meet your or any other person's

requirements, operate without interruption, achieve any intended result, be compatible or work with any of

your or any third party's software, system or other services, or be secure, accurate, complete, free of

harmful code, or error-free, or be free of any defects.

(I) Notation (1 July 2022)

This notation is available for certain units or structures that transfer class to ABS or are built under ABS

Survey with plans that have been approved to the Rules of another recognized classification society in

accordance with 1-1-4/9.5.

If ABS has an optional notation on the same subject, an equivalent ABS notation may be given, based on

the scope of the notations. Otherwise, the similar ABS notation followed by the (I) indicator may be given.

Not all notations are eligible for the (I) indicator.

Part 1 Rules for Conditions of Classification - Offshore Units and Structures

Chapter 1 Scope and Conditions of Classification

Section 3 Classification Symbols and Notations (2018) 1-1-3

ABS RULES FOR CONDITIONS OF CLASSIFICATION - OFFSHORE UNITS AND STRUCTURES • 2022 12

The requirements in these Rules are the common requirements for conditions of classification of offshore

units and structures. Any unique requirements for a specific type of offshore unit or structure are specified

in the supplement to these Rules in each of the following Chapters. These Rules are to be used together

with the applicable supplemental Rules for the specific type of unit or structure.

1.5 Document Types (1 July 2022)

1.5.1 General

ABS publishes several document types to support Classification. The content and approval

process for the main four document types is outlined below.

1.5.2 Rules

ABS Rules contain mandatory criteria for Classification and issuance of Class Certificates. The

mandatory criteria applicable to a specific offshore unit and structure type and service must be met

for an offshore unit or structure to receive and maintain a class certificate.

ABS Rules may cover equipment or components that may not be associated with a specific

offshore unit or structure. Certification of these items may be covered by the ABS Type Approval

Program or subject to Survey when installed onboard a classed offshore unit or structure.

Rules may also contain optional notations. Optional notations may be added or dropped without

impacting the validity of the class certificate. Criteria associated with an optional notation are to

be met in order for the offshore unit or structure to receive and maintain the notation.

Proposed changes to ABS Rules are presented to The Technical Committees. Final approval is by

the ABS Rules Committee. Part 1 changes related to general terms and conditions on which ABS

offers classification and associated services are approved by the Classification Committee.

1.5.3 Requirements

“Requirements” documents contain mandatory criteria for Classification and issuance of Class

Certificates, see 1-1-4/1.5.2 above. These documents were specifically developed to address new

technologies or novel features on vessels. As such, these documents may be updated more

frequently to align with these new technologies and revised outside the scheduled ABS Technical

Committees Rule change process. The approval of “Requirements” documents is conducted solely

by the ABS Rules Committee.

Commentary:

The requirements for this document type were historically published as “Guides” by ABS. ABS has created this

new document type to make a distinction between mandatory requirements and requirements for optional

notations. These requirements are reviewed and approved separate and apart from the Rules to allow for timely

revisions to address rapidly evolving technology. As of 1 July 2022, many documents previously published as

Guides have been republished as “Requirements” documents.

End of Commentary

1.5.4 Guides

Guides contain requirements for optional Notations. The approval process is the same as for

"Requirements" documents.

1.5.5 Guidance Notes

Guidance Notes contain nonbinding statements of industry best practices. This may included

guidance on technical procedures. Notations are not offered in Guidance Notes. Guidance Notes

are not reviewed by ABS Technical Committees.

Part 1 Rules for Conditions of Classification - Offshore Units and Structures

Chapter 1 Scope and Conditions of Classification

Section 4 Rules for Classification 1-1-4

ABS RULES FOR CONDITIONS OF CLASSIFICATION - OFFSHORE UNITS AND STRUCTURES • 2022 14

3 Effective Date of Rule Change

3.1 Effective Date (1 May 2017)

Changes to the Rules are to become effective on the date specified by ABS. In general, the effective date is

not less than six months from the date on which the ABS Rules Committee approves them. However, ABS

may bring into force individual changes before that date if necessary or appropriate. The effective date of

changes to the Rules can be found in the Introduction to ABS publication, “Notices and General

Information”, that is published with the respective Rules or Guides.

Guides and subsequent changes to Guides are to become effective on the date specified by ABS.

3.3 Implementation of Rule Changes

3.3.1 General (2005)

In general, until the effective date, plan approval for designs will follow prior practice unless

review under the latest Rules or Guide is specifically requested by the party signatory to the

application for classification.

3.3.2 Date of Contract for Construction (1 February 2007)

The date of "contract for construction" of an offshore unit or structure is the date on which the

contract to build the offshore unit or structure is signed between the prospective Owner and the

shipbuilder. The date and the construction numbers (i.e., hull numbers) of all the offshore units or

structures included in the contract are required to be indicated on the form, "Application of

Request for Classification".

If the signed contract for construction is amended to change the offshore unit or structure type, the

date of "contract for construction" of this modified offshore unit or structure, or offshore units or

structures, is the date on which the revised contract or a new contract is signed between the

Owner, or Owners, and the shipbuilder.

3.3.3 Series of Units and Optional Units (21 June 2007)

The date of “contract for construction” as defined 1-1-4/3.3.2 of a series of offshore units or

structures, including specified optional offshore units or structures for which the option is

ultimately exercised, is the date on which the contract to build the series is signed between the

prospective Owner and the shipbuilder.

Offshore units or structures built under a single contract for construction are considered a “series

of offshore units” (or structures) if they are built to the same approved plans for classification

purposes. However, the offshore units or structures within a series may have design alterations

from the original design provided:

i) Such alterations do not affect matters related to classification, or

ii) If the alterations are subject to classification requirements, these alterations are to comply

with the classification requirements in effect on the date on which the alterations are

contracted between the prospective Owner and the shipbuilder or, in the absence of the

alteration contract, comply with the classification requirements in effect on the date on

which the alterations are submitted to ABS for approval.

The “optional offshore units” (or structures) will be considered part of the same series of offshore

units or structures if the option is exercised not later than one year after the contract to build the

series was signed.

3.3.4 Additional Optional Units (2005)

If a contract for construction is later amended to include additional offshore units or structures or

additional options, the date of “contract for construction” for such offshore units or structures is

Part 1 Rules for Conditions of Classification - Offshore Units and Structures

Chapter 1 Scope and Conditions of Classification

Section 4 Rules for Classification 1-1-4

ABS RULES FOR CONDITIONS OF CLASSIFICATION - OFFSHORE UNITS AND STRUCTURES • 2022 15

the date on which the amendment to the contract is signed between the prospective Owner and the

shipbuilder. The amendment to the contract is to be considered as a “new contract” to which

1-1-4/3.3.2 and 1-1-4/3.3.3 above apply.

Where designs for one or more offshore units or structures comply with the Rules applicable at the

time of approval, no retroactive application of later Rule changes to such offshore units or

structures will be required unless necessary or appropriate.

5 Other Conditions

The Committee reserves the right to refuse classification of any offshore unit or structure where items for

which there are Rule requirements are not in accordance with them.

7 Installations Not Covered by the Rules

These Rules do not apply to the structure of industrial equipment used exclusively in drilling, offshore

maintenance and construction, or related operations, except insofar as their installation may affect the

structural integrity and stability of the offshore unit or structure. Determination of the adequacy of sea bed

bearing capacity, resistance to possible sliding and anchor holding capability is not covered by these Rules.

The assessment of the required holding capacity, arrangement, and operation of position mooring

equipment and dynamic positioning equipment used for station keeping is the responsibility of the Owner

and is not covered by these Rules.

9 Alternatives

9.1 General

The Committee is at all times ready to consider alternative arrangements, designs, and scantlings which

can be shown, through either satisfactory service experience or a systematic analysis based on sound

engineering principles, to meet the overall safety, serviceability, and long-term strength standards of the

Rules and Guides.

9.3 National Standards

The Committee will consider special arrangements or details of hull, equipment, or machinery which can

be shown to comply with standards recognized in the country in which the offshore unit or structure is

registered or built, provided they are not less effective.

9.5 Other Rules

The Committee will consider hull, equipment or machinery built to the satisfaction of the ABS Surveyors

in accordance with the plans that have been approved to the Rules of another recognized classification

society with verification of compliance by ABS. A record comment will be entered in the Record

indicating that classification has incorporated the provisions of this Paragraph. Submission of plans is to be

in accordance with Section 1-1-7.

9.7 ABS Type Approval Program (2003)

9.7.1 Type Approval

Products that can be consistently manufactured to the same design and specification may be Type

Approved under the ABS Type Approval Program. The ABS Type Approval Program is a

voluntary option for the demonstration of compliance of a product with the Rules or other

recognized standards. It may be applied at the request of the designer or manufacturer. The ABS

Type Approval Program generally covers Product Type Approval (1-1-4/9.7.3), but is also

applicable for a more expeditious procedure towards Unit-Certification as specified in 1-1-4/9.7.2.

Part 1 Rules for Conditions of Classification - Offshore Units and Structures

Chapter 1 Scope and Conditions of Classification

Section 4 Rules for Classification 1-1-4

ABS RULES FOR CONDITIONS OF CLASSIFICATION - OFFSHORE UNITS AND STRUCTURES • 2022 16

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