Observation of the operating parameters of a well, via instrumentation, on a predefined frequency to ensure that they remain within their operating limits

  • Note: 1 to entry: Examples of well operating parameters include pressures, temperatures, flow rates.

Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards


The repetitive and continued observation, measurement and evaluation of specific quality or performance criteria, to follow changes over a period of time and for a defined purpose.

This term is sometimes further qualified to identify its specific purpose such as in Environmental Monitoring, Health Monitoring, etc.  The monitored criteria are compared with the Screening Criteria to appraise compliance with regulatory standards and how well the operation is meeting company objectives.

Source: International Association of Drilling Contractors, Appendix 2 to Health, Safety and Environment Case Guidelines for Offshore Drilling Contractors, Issue 3.3.2, February 2010. IADC Guidelines



Determining the status of a system, a process or an activity.

  • Note 1 to entry: To determine the status there may be a need to check, supervise or critically observe.

Source: ISO/IEC 27000:2014, Information technology — Security techniques — Information security management systems — Overview and vocabulary, Third Edition, January 2014. Global Standards



Continual checking, supervising, critically observing or determining the status in order to identify change from the performance level required or expected. NOTE Monitoring can be applied to a risk management framework (2.1.1), risk management process (3.1), risk (1.1) or control (

Source: ISO Guide 73:2009(E/F), Risk Management – Vocabulary, First Edition, 2009. Global Standards



Supervision or oversight of an activity.

  • Note 1 to entry: Monitoring is carried out to ensure continuing compliance with, or adherence to, specific requirements.

Source: ISO/IEC TS 17027:2014, Conformity assessment – Vocabulary related to competence of persons used for certification of persons, Global Standards



Monitoring means systematic and regular studies to document the condition of the environmental resources, describe the risk of pollution and carry out control of pollution of marine environmental resources.

Source: Guidelines Regarding the Framework Regulations, Norway, updated December 2012. Regulatory Guidance

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