SRA

SRA

Definition(s)

SRA

Security Risk Assessment.

Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards

SRA

Structural-reliability analysis. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards
SIMOPS

SIMOPS

Definition(s)

SIMOPS

Simultaneous Operations. Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards Source: API  Bulletin 97, Well Construction Interface Document Guidelines, First Edition, December 2013. Global Standards Source: 117 OLF, Norwegian Oil and Gas Association recommended guidelines for Well Integrity, No. 117, Revision No. 4, June 2011. Global Standards 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 Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards
Root Cause

Root Cause

Definition(s)

Root Cause

Circumstances during design, manufacture or use that have led to a failure. NOTE Generic failure cause codes applicable for equipment failures are defined in ISO 14224:2006, B.2.3. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Risk Register

Risk Register

Definition(s)

Risk Register

Tool to record, follow up and close out actions related to relevant assessed risks
  • Note: 1 to entry: Each entry in the risk register typically includes a description of the risk, a description of the action(s), the responsible party, the due date, and status of the action.
Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global St

Risk Register

A complete list of risks for a company, business, asset or project. Each risk in the register is normally briefly described and then, using a common process, characterised in terms of factors such as potential consequences, likelihood, priority or ranking, risk controls/barriers, residual risk type/classification, actions underway, review dare and owner. 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

Risk Register

Tool to log, follow up and close out relevant risks. NOTE Each entry in the risk register should typically include ⎯ description of the risk, ⎯ description of the action(s), ⎯ responsible party, ⎯ due date, ⎯ action status. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  

Risk Register

Record of information about identified risks (1.1). NOTE The term “risk log” is sometimes used instead of “risk register”. Source: ISO Guide 73:2009(E/F), Risk Management – Vocabulary, First Edition, 2009. Global Standards
Reliability Data

Reliability Data

Definition(s)

Reliability Data

Data for reliability, maintainability and maintenance support performance. NOTE Reliability and maintainability (RM) data is the term applied by ISO 14224:2006. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards
RBD

RBD

Definition(s)

RBD

Reliability block diagram. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Production Performance

Production Performance

Definition(s)

Production Performance

Capacity of a system to meet demand for deliveries or performance. NOTE 1 Production availability, deliverability or other appropriate measures can be used to express production performance. NOTE 2 The use of production-performance terms should specify whether it represents a predicted or historic production performance. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Production Availability

Production Availability

Definition(s)

Production Availability

Ratio of production to planned production, or any other reference level, over a specified period of time. NOTE This measure is used in connection with analysis of delimited systems without compensating elements such as substitution from other producers and downstream buffer storage. Battery limits need to be defined in each case. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Production Assurance

Production Assurance

Definition(s)

Production Assurance

Activities implemented to achieve and maintain a performance that is at its optimum in terms of the overall economy and at the same time consistent with applicable framework conditions. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Production-Performance Analysis

Production-Performance Analysis

Definition(s)

Production-Performance Analysis

Systematic evaluations and calculations carried out to assess the production performance of a system. NOTE The term should be used primarily for analysis of total systems, but may also be used for analysis of production unavailability of a partial system. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
POR

POR

Definition(s)

POR

Performance and operability review. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
PNA

PNA

Definition(s)

PNA

Petri net analysis. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Performance Requirements

Performance Requirements

Definition(s)

Performance Requirements

Required minimum level for the performance of a system. NOTE Requirements are normally quantitative but may also be qualitative. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards
Performance Objectives

Performance Objectives

Definition(s)

Performance Objectives

Indicative level for the desired performance. NOTE Objectives are expressed in qualitative or quantitative terms. Objectives are not absolute requirements and may be modified based on cost or technical constraints. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards
PAP

PAP

Definition(s)

PAP

Production-assurance programme. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Observation Period

Observation Period

Definition(s)

Observation Period

Time period during which production performance and reliability data are recorded. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
MPA

MPA

Definition(s)

MPA

Markov process analysis. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Mean Time to Repair

Mean Time to Repair

Definition(s)

Mean Time to Repair

Expectation of the time to restoration. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  

Mean Time to Repair

expected time to achieve the repair of a failed item Note 1 to entry: This term MTTR is used in ISO 14224[15] and ISO 20815[16] where the fault detection time is not really considered: ISO 14224[15] deals with detected faults (in fact, the actual time spent to detect the fault is never known and cannot be collected); ISO 20815[16] deals mainly with immediately revealed failure where t he t ime spent to detect the faults is close to 0 (i.e. negligible). As the fault detection time is very important for the purpose of this Technical Report there is a need to clearly distinguish between the two following times (cf. Figure 5): 1) the time elapsing from the actual occurrence of the failure of an item to its detection (cf. 3.1.35, MFDT); 2) the time elapsing from the detection of the failure of an item to the restoration of its function (cf. 3.1.33, MRT). Note 2 to entry: The acronym MTTR is defined as the mean time to restore in the IEC 60500–191[14] or in the IEC 61508[2]. This is not the same as in ISO 14224[15] or ISO 20815[16]. Therefore, in order to avoid any mixed-up, the acronym MTTRes is used in this Technical Report instead of MTTR (cf. 3.1.32). FIG.5 Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards
Air Cushion

Air Cushion

Definition(s)

Air Cushion

Air pumped into underbase compartments of the structure. NOTE Normally applied in order to reduce the draught and increase the freeboard and/or to alter the structural loading. [ISO 19903:2006, 3.10]. Source: API RP 2MOP, Marine Operations, Upstream Segment, First Edition, July 2010. Global Standards

 

Mean Time to Failure

Mean Time to Failure

Definition(s)

Mean Time to Failure

Expectation of the time to failure [2]. NOTE The MTTF of an item can be longer or shorter than the design life of the system. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  

Mean Time to Failure

expectation of the down time mean time to failure   FIG.3 Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standardss  
Mean Time Between Failures

Mean Time Between Failures

Definition(s)

Mean Time Between Failures

Expectation of the time between failures. NOTE The MTBF of an item can be longer or shorter than the design life of the system. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  

Mean Time Between Failures

MTBF expected time between successive failures of a repairable item Note 1 to entry: In the cases illustrated in Figure 4, the MTBF is linked with MTTF and MTTRes by the following relationship: MTBF = MTTF+MTTRes. More generally It is also linked to the MUT and MDT by MTBF = MUT+MDT. Note 2 to entry: The acronym MTBF is sometimes defined as the mean operating time between failures (e.g. in IEV191[14]). This is not at all the same and, in this case, the formula described in Note 1 to entry is no longer valid. This is very confusing, therefore the traditional definition of the MTBF is retained in this Technical Report. FIG.4 Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards
Maintenance Support Performance

Maintenance Support Performance

Definition(s)

Maintenance Support Performance

Ability of a maintenance organization, under given conditions, to provide upon demand, the resources required to maintain an item, under a given maintenance policy. NOTE The given conditions are related to the item itself and to the conditions under which the item is used and maintained. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Maintenance Data

Maintenance Data

Definition(s)

Maintenance Data

Data characterizing the maintenance action planned or done. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
LPG

LPG

Definition(s)

LPG

Liquefied Petroleum Gases. Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards 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 Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards 
LOSTREV

LOSTREV

Definition(s)

LOSTREV

Lost revenue. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Lost Revenue

Lost Revenue

Definition(s)

Lost Revenue

Total cost of lost or deferred production due to downtime. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
LNG

LNG

Definition(s)

LNG

Liquefied Natural Gases. Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards
GTL

GTL

Definition(s)

GLT

Gas to liquid. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
FNA

FNA

Definition(s)

FNA

Flow-network analysis. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards  
Fault Tolerance

Fault Tolerance

Definition(s)

Fault Tolerance

Attribute of an item that makes it able to perform a required function in the presence of certain given sub-item faults. Source: ISO 20815:2008, Petroleum, petrochemical and natural gas industries – Production assurance and reliability management. Global Standards