ISO 14224:2006 pdf download.Petroleum, petrochemical and natural gas industries - Collection and exchange of reliability and maintenance data for equipment
1 Scope
ISO 14224 provides a comprehensive basis for the collection of reliability and maintenance (RM) data in a standard format for equipment in all facilities and operations within the petroleum, natural gas and petrochemical industries during the operational life cycle of equipment. It describes data-collection principles and associated terms and definitions that constitute a“reliability language" that can be useful for communicating operational experience. The failure modes defined in the normative part of this International Standard can be used as a "reliability thesaurus" for various quantitative as well as qualitative applications.This International Standard also describes data quality control and assurance practices to provide guidance for the user.
Standardization of data-collection practices facilitates the exchange of information between parties, e.g. plants,owners, manufacturers and contractors. This International Standard establishes requirements that any in-house or commercially available RM data system is required to meet when designed for RM data exchange.Examples, guidelines and principles for the exchange and merging of such RM data are addressed.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply,
NOTE Some derived RM parameters, which can be calculated from collected RM data covered by this International Standard, are contained in Annex C. References to Annex C are given as deemed appropriate.
3.1 availability
ability of an item to be in a state to perform a required function under given conditions at a given instant of time or over a given time interval, assuming that the required external resources are provided
NOTE For a more detailed description and interpretation of availability, see Annex C.
3.2 active maintenance time
that part of the maintenance time during which a maintenance action is performed on an item, either automatically or manually, excluding logistic delays
NOTE 1 A maintenance action can be carried out while the item is performing a required function.
NOTE 2 For a more detailed description and interpretation of maintenance times, see Figure 4 and Annex C.
3.4 common-cause failure
failures of different items resulting from the same direct cause, occurring within a relatively short time, where these failures are not consequences of another
NOTE Components that fail due to a shared cause normally fail in the same functional mode. The term common mode is， therefore, sometimes used. It is, however, not considered to be a precise term for communicating the characteristics that describe a common-cause failure.
3.5 corrective maintenance
maintenance carried out after fault recognition and intended to put an item into a state in which it can perform a required function
NOTE For more specific information, see IEC 60050-191:1990, Figure 191-10.
3.6 critical failure
failure of an equipment unit that causes an immediate cessation of the ability to perform a required function
NOTE Includes failures requiring immediate action towards cessation of performing the function, even though actual operation can continue for a short period of time. A critical failure results in an unscheduled repair.ISO 14224 pdf download.ISO 14224 pdf download.