Standard Classification for Hierarchy of Equipment Identifiers and Boundaries for Reliability, Availability, and Maintainability (RAM) Performance Data Exchange

SIGNIFICANCE AND USE
Capturing high quality Reliability, Availability, and Maintainability (RAM) performance data requires careful and consistent collection of equipment failure and repair data, operating hours, and repair time. A standard hierarchy of equipment boundaries has been needed for machinery data exchange among the stakeholders in shipbuilding, ship classification, and ship operations.
Industry and government will use a world standard method for setting the hierarchy of indentures and boundaries required for assigning failure and repair events to equipment for the tracking and calculation of equipment RAM performance.
Agreed boundaries and equipment identifiers make it possible to share equipment data among organizations, benchmark equipment performance, perform modeling and simulation of current and proposed systems, or use performance data to improve operations of commercial and Naval vessels.
RAM analysis is primarily based on the observation of individual components among which identical items contribute to the same data sample. This classification is designed to be used for the identification of individual (unique) components in such a way that identical components can be identified within a given data sample.
SCOPE
1.1 This classification is to serve as an international standard for marine equipment nomenclature, taxonomy, hierarchical data structure, unique identifiers, and boundary definition for the consistent acquisition and exchange of equipment RAM performance data. The standard addresses the classification of mechanical and software products.
1.2 RAM in an acronym for Reliability, Availability, & Maintainability where:
1.2.1 Reliability is the probability that an item can perform a required function under given conditions for a given time interval (t1, t2). It is generally assumed that the item is in a state to perform this required function at the beginning of the time interval.
1.2.2 Availability is the probability that an item is in a state to perform a required function under given conditions at a given instant of time, assuming that the required external resources are provided.
1.2.3 Maintainability is the probability that a given active maintenance action, for an item under given conditions of use can be carried out within a stated time interval, when the maintenance is performed under stated conditions and using stated procedures and resources.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

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30-Apr-2010
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ASTM F2446-04(2010) - Standard Classification for Hierarchy of Equipment Identifiers and Boundaries for Reliability, Availability, and Maintainability (RAM) Performance Data Exchange
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F2446 −04 (Reapproved 2010) An American National Standard
Standard Classification for
Hierarchy of Equipment Identifiers and Boundaries for
Reliability, Availability, and Maintainability (RAM)
1
Performance Data Exchange
This standard is issued under the fixed designation F2446; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This classification is to serve as an international stan-
dard for marine equipment nomenclature, taxonomy, hierarchi-
2. Referenced Documents
cal data structure, unique identifiers, and boundary definition
2
2.1 ISO Standards:
fortheconsistentacquisitionandexchangeofequipmentRAM
ISO 3166-1:1997 Codes for the Representation of Names of
performance data. The standard addresses the classification of
Countries and Their Subdivisions — Part 1: Country
mechanical and software products.
Codes, 1997
1.2 RAM in an acronym for Reliability, Availability, &
ISO 10303 Industrial Automation Systems and Integration
Maintainability where:
— Product Data Representation and Exchange
1.2.1 Reliability is the probability that an item can perform
ISO 13584 Industrial Automation Systems and Integration
a required function under given conditions for a given time
— Parts Library
interval (t1, t2). It is generally assumed that the item is in a
ISO/IEC TR 12182 Information Technology — Categoriza-
state to perform this required function at the beginning of the
tion of Software, Technical Report, 1998
time interval.
ISO/TC 67/WG 4 ISO/FDIS 14224:1998(E), Petroleum and
1.2.2 Availability is the probability that an item is in a state
Natural Gas Industries — Collection and Exchange of
to perform a required function under given conditions at a
Reliability and Maintenance Data for Equipment, 1998
given instant of time, assuming that the required external
2.2 Other Standards:
resources are provided.
CenterforChemicalProcessSafetyoftheAmericanInstitute
1.2.3 Maintainability is the probability that a given active
of Chemical Engineers Guidelines for Improving Plant
maintenance action, for an item under given conditions of use 3
Reliability through Data Collection and Analysis, 1998
can be carried out within a stated time interval, when the
IEC 60050-191 International Electrotechnical Vocabulary,
maintenance is performed under stated conditions and using 4
Chapter 191, Dependability and Quality of Service
stated procedures and resources.
International Maritime Organization (IMO) Circular letter
1.3 This standard does not purport to address all of the
No. 1886/Rev. 2 Implementation of Resolution
safety concerns, if any, associated with its use. It is the
A.600(15)—IMO Ship Identification Number Scheme,
5
responsibility of the user of this standard to establish appro-
2002
priate safety, health, and environmental practices and deter-
Naval Sea Systems Command Expanded Ship Work Break-
mine the applicability of regulatory limitations prior to use.
down Structure (ESWBS) for All Ships and Ship/Combat
6
1.4 This international standard was developed in accor-
Systems, Volumes 1 and 2, 1985
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
2
Available from International Organization for Standardization (ISO), 1, ch. de
Development of International Standards, Guides and Recom-
la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
www.iso.ch.
3
Available from American Institute of Chemical Engineers, 3 Park Ave, New
York, N.Y. 10016-5991.
1 4
This classification is under the jurisdiction ofASTM Committee F25 on Ships Available from International Electrotechnical Commission (IEC), 3 rue de
and Marine Technology and is the direct responsibility of Subcommittee F25.05 on Varembé, Case postale 131, CH-1211, Geneva 20, Switzerland, http://www.iec.ch.
5
Computer Applications. Available from International Maritime Organization (IMO), 4 Albert
Current edition approved May 1, 2010. Published June 2010. Originally Embankment, London, SE1 7SR, U. K.
6
approved in 2004. Last previous edition approved in 2004 as F2446 – 04. DOI: Available from Naval Sea Systems Command, 1333 Isaac Hull Avenue, S. E.
10.1520/F2446-04R10. Washington Navy Yard, Washington D.C. 20376.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F2446−04 (2010)
3. Terminology 3.1.9.3 location ID—when multiple identical components
arelocatedon
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