The Society

The Society

Definition(s)

The Society

Signifies DNV GL AS. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Significant Repair

Significant Repair

Definition(s)

Significant Repair

A repair where machinery is completely dismantled and re-assembled. Significant repairs will, furthermore, be cases of repairs after serious damage to machinery. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Sighting Survey

Sighting Survey

Definition(s)

Sighting Survey

A survey to confirm that the relevant construction or the equipment is in a satisfactory condition and, as far as can be judged, will remain so until the postponed survey has been carried out Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
The Rules

The Rules

Definition(s)

The Rules

All rule requirements accepted by the appropriate approval body as basis for classification. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Retroactive Requirement

Retroactive Requirement

Definition(s)

Retroactive Requirement

Constitutes a class or statutory requirement that will enter into force for certain vessel’s in operation and under construction at a given date or an upcoming survey. The RR will specify the required actions to be taken in order to retain class or statutory certification. RR related to statutory certification will be issued only if the Society has been authorized to carry out statutory certification on behalf of the flag administration. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Representative Tanks

Representative Tanks

Definition(s)

Representative Tanks

Those tanks which are expected to reflect the condition of other tanks of similar type and service and with similar corrosion protection systems When selecting representative tanks account shall be taken of the service and repair history on board and identifiable critical and/or suspect areas. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Recognised Classification Society

Recognised Classification Society

Definition(s)

Recognised Classification Society

A classification society which is a full or associate member of IACS. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Quality Survey Plan

Quality Survey Plan

Definition(s)

Quality Survey Plan

A plan that systematically identifies activities related to the classification project (e.g., construction, installation, testing, mechanical completion, pre-commissioning, testing and commissioning) and the extent of involvement each party (i.e., yard's QC, yards' QA, DNV GL and owners [if desired]) will undertake Such a plan needs to be submitted to the Society for approval prior to commencement of classification projects. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Quality Audit

Quality Audit

Definition(s)

Quality Audit

A systematic and independent examination to determine whether established work processes and quality systems are adhered to quality system signifies both the quality management system and established production and control procedures Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Plan Approval

Plan Approval

Definition(s)

Plan Approval

Staff personnel authorized to carry out plan approval and to conclude whether or not compliance has been met. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards  

Plan Approval

Signifies a systematic and independent examination of drawings, design documents or records in order to verify compliance with the rules or statutory requirements. Plan approval will be carried out at the discretion of the society, which also decides the extent and method of examination. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Overall Examination

Overall Examination

Definition(s)

Overall Examination

An examination intended to report on the overall condition of the structure owner signifies the registered owner or manager of the vessel or any other organization or person who has assumed the responsibility for operation of the vessel and who on assuming such responsibility has agreed to take over all the duties and responsibilities. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Memorandum to Owner

Memorandum to Owner

Definition(s)

Memorandum to Owner

Constitutes information related to the ship, its machinery and equipment or to rule requirements. A MO will be issued in relation to information that does not require any corrective action or survey. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Main Hoisting System

Main Hoisting System

Definition(s)

Main Hoisting System

All major lifting equipment directly involved in lifting pipe, riser etc. into and out of the well, such as drawworks, hydraulic cylinders, top drive, links, elevators etc. Pipe handling equipment used for making up and breaking out pipe/stands are not considered main hoisting systems. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Flag Administration

Flag Administration

Definition(s)

Flag Administration

The maritime administration of a vessel's country of registry. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Emergency Towing

Emergency Towing

Definition(s)

Emergency Towing

Towing related to an emergency situation normally caused by failure of the units own propulsion (compare with normal towing). Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Mechanical Completion

Mechanical Completion

Definition(s)

Mechanical Completion

Verification that the components, equipment and the systems are constructed, installed and tested in accordance with applicable drawings and specifications and are ready for testing and commissioning in a safe manner. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Customer

Customer

Definition(s)

Customer

A stakeholder who is the purchaser or recipient of a service or product from the Company, either directly or indirectly. Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global Standards

Customer

Signifies the party who has requested the Society's service designer signifies a party who creates documentation submitted to the Society for approval or information. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Condition on Behalf of the Flag Administration

Condition on Behalf of the Flag Administration

Definition(s)

Condition on Behalf of the Flag Administration

Constitutes specific measures, repairs or surveys that shall be carried out within a specific time limit in order to retain the statutory certificate. A CA will be issued only when the Society has been authorised to carry out statutory surveys on behalf of the flag ad-ministration. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Condition of Class

Condition of Class

Definition(s)

Condition of Class

Constitutes a requirement that specific measures, repairs or surveys shall be carried out within a specific time limit in order to retain class. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Concurrent Surveys

Concurrent Surveys

Definition(s)

Concurrent Surveys

Surveys required to be concurrently completed shall have the same date of completion. A survey required to be carried out in conjunction with or carried out as part of another survey shall be completed on or before the completion of the other survey, however, within the time window for that survey. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Coating Conditions

Coating Conditions

Definition(s)

Coating Conditions

— “GOOD”: condition with only minor spot rusting — “FAIR”: condition with local breakdown at edges of stiffeners and weld connections and/or light rusting over 20% or more of areas under consideration, but less than as defined for POOR condition — “POOR”: condition with general breakdown of coating over 20% or more of areas or hard scale at 10% or more of areas under consideration. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Close-up Examination

Close-up Examination

Definition(s)

Close-up Examination

An examination where the details of structural components are within the close visual inspection range of the surveyor, i.e. preferably within reach of hand. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Class

Class

Definition(s)

Class

Class is assigned to and will be retained by vessels complying with applicable requirements of the Society's rules. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Certification of Materials and Components

Certification of Materials and Components

Definition(s)

Certification of Materials and Components

The activity of ensuring that materials, components and systems used in vessels to be classed by the Society comply with the rule requirements.The scope of classification re-quires that specified materials, components and systems intended for the vessel are certified. Depending on the categorisation, certification may include both plan approval and survey during production and/or of the final product. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Builder

Builder

Definition(s)

Builder

Signifies the party contracted to build a vessel in compliance with the Society's rules certificate a document confirming compliance with the Society's rules or with other rules and regulations for which the Society has been authorized to act. Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Approval

Approval

Definition(s)

Approval

Denotes acceptance by DNV GL of documentation showing design solutions, arrangements and equipment that complies with the Rules Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
HDG

HDG

Definition(s)

HDG

Hot-dip galvanized. Source: ISO 21457:2010, Petroleum and natural gas industries — Materials selection and corrosion control for oil and gas production systems, First Edition,September 2010. Global Standards
ASCC

ASCC

Definition(s)

ASCC

Alkaline stress corrosion cracking Source: ISO 21457:2010, Petroleum and natural gas industries — Materials selection and corrosion control for oil and gas production systems, First Edition,September 2010. Global Standards
Type 13Cr

Type 13Cr

Definition(s)

Type 13Cr

Martensitic stainless steel alloys with nominal 13 % Cr mass fraction alloying. EXAMPLE UNS S41000; UNS S41500. Source: ISO 21457:2010, Petroleum and natural gas industries — Materials selection and corrosion control for oil and gas production systems, First Edition,September 2010. Global Standards
pH Stabilization

pH Stabilization

Definition(s)

pH Stabilization

Increasing the bulk pH by addition of a suitable chemical to reduce CO2 corrosion in hydrocarbon systems with condensing water Source: ISO 21457:2010, Petroleum and natural gas industries — Materials selection and corrosion control for oil and gas production systems, First Edition,September 2010. Global Standards