Baseline Risk

Baseline Risk

Definition(s)

Baseline Risk

The normal operating condition level of risk that takes into account existing risk mitigation measures.

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

Baseline Risk

Current level of risk that takes into account existing risk mitigation measures.

Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global Standards

Baseline Risk

Current level of risk that takes into account existing risk mitigation measures. Sample Usage: Risk analysts for the locality calculated a baseline risk value before analyzing the risk reduction potential of two alternative strategies. Annotation: Often, the word ―risk‖ is used to imply ―baseline risk‖ with the unstated understanding that the reference is the current circumstances. It should not be confused with risk as a measurement, which can change with the substitution of different variables. Source: DHS Risk Lexicon, U.S. Department of Homeland Security, 2010 Edition. September 2010 Regulatory Guidance
Type of Protection “pD”

Type of Protection “pD”

Definition(s)

Type of Protection “pD”

technique of applying a protective gas to an enclosure in order to prevent the formation of an explosive dust atmosphere inside the enclosure by maintaining an overpressure against the surrounding atmosphere. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Type of Protection “tD” or Group III “t”

Type of Protection “tD” or Group III “t”

Definition(s)

Type of Protection “tD” or Group III “t”

Type of protection for explosive dust atmospheres where electrical equipment is provided with an enclosure providing dust ingress protection and a means to limit surface temperatures. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Intrinsically Safe Protection “i”

Intrinsically Safe Protection “i”

Definition(s)

Intrinsically Safe Protection “i”

Type of protection based on the restriction of electrical energy within apparatus and of interconnecting wiring exposed to the potentially explosive gas atmosphere to a level below that which can cause ignition by either sparking or heating effects. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Copy Winding

Copy Winding

Definition(s)

Copy Winding

Process by which a winding is totally or partially replaced by another, the characteristics and properties of which are at least as good as those of the original. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Symbol “X”

Symbol “X”

Definition(s)

Symbol "X"

Symbol used to denote specific conditions of use. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Certificate References

Certificate References

Definition(s)

Certificate References

A certificate reference number may refer to a single design or a range of equipment of similar design. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Repair Facility

Repair Facility

Definition(s)

Repair Facility

Facility providing a service that consists of repairs, overhauls, or reclamations of explosion protected equipment who may be the manufacturer, the user or a third party (repair agency). Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Component Part

Component Part

Definition(s)

Component Part

An indivisible item. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Serviceable Condition

Serviceable Condition

Definition(s)

Serviceable Condition

Permits a replacement or reclaimed component part to be used without prejudice to the performance or explosion protection aspects of the equipment, with due regard to the requirements of the certificate documentation as applicable, in which such a component part is used. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Technical Person with Executive Function

Technical Person with Executive Function

Definition(s)

Technical Person with Executive Function

Person providing technical management of the skilled personnel, having adequate knowledge in the field of explosion protection, having familiarity with the local conditions, having familiarity with the installation and who has overall responsibility and control of the inspection systems for the electrical equipment within hazardous areas. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Visual Inspection

Visual Inspection

Definition(s)

Visual Inspection

Visually examining for a variety of surface flaws, such as corrosion, contamination, surface finish, and surface discontinuities.

Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards

Visual Inspection

Inspection which identifies, without the use of access equipment or tools, those defects, such as missing bolts, which will be apparent to the eye. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Skilled Personnel

Skilled Personnel

Definition(s)

Skilled Personnel

Persons whose training has included instruction on the various types of protection and installation practices, the requirements of this standard, the relevant national regulations/company rules applicable to the installation and on the general principles of area classification. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Sample Inspection

Sample Inspection

Definition(s)

Sample Inspection

Inspection of a representative proportion of the electrical equipment, systems and installations. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Periodic Inspection

Periodic Inspection

Definition(s)

Periodic Inspection

Inspection of all electrical equipment, systems and installations carried out on a routine basis. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Live Maintenance

Live Maintenance

Definition(s)

Live Maintenance

Maintenance activities carried out while circuits are energized. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Initial Inspection

Initial Inspection

Definition(s)

Initial Inspection

Inspection of all electrical equipment, systems and installations before they are brought into service. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Detailed Inspection

Detailed Inspection

Definition(s)

Detailed Inspection

Inspection which encompasses those aspects covered by a close inspection and, in addition, identifies those defects, such as loose terminations, which will only be apparent by opening the enclosure, and/or using, where necessary, tools and test equipment. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Continuous Supervision

Continuous Supervision

Definition(s)

Continuous Supervision

Frequent attendance, inspection, service, care and maintenance of the electrical installation by skilled personnel who have experience in the specific installation and its environment in order to maintain the explosion protection features of the installation in satisfactory condition. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
Close Inspection

Close Inspection

Definition(s)

Close Inspection

Inspection which encompasses those aspects covered by a visual inspection and, in addition, identifies those defects, such as loose bolts, which will be apparent only by the use of access equipment EXAMPLE Steps, (where necessary), and tools. Note 1 to entry: Close inspections do not normally require the enclosure to be opened, or the equipment to be deenergized. Source: IEC 60079-17:2013, Explosive atmospheres – Part 17: Electrical installations inspection and maintenance, Edition 5.0, November 2013. Global Standards
RFID

RFID

Definition(s)

RFID

Radio frequency identification devices. Source: API 570, Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems, Fourth Edition, February 2016, with Addendum May 2017. Global Standards

RFID

Data collection technology that uses electronic tags for storing data. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Personal

Personal

Definition(s)

Personal

Equipment intended to be supported by a person’s body during normal use. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Transportable

Transportable

 Definition(s)

Transportable

Equipment not intended to be carried by a person nor intended for fixed installation which can be moved when energized. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Fixed

Fixed

Definition(s)

Fixed

Equipment fastened to a support, or otherwise secured in a specific location when energized. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Safety Extra-low Voltage System (SELV)

Safety Extra-low Voltage System (SELV)

Definition(s)

Safety Extra-low Voltage System (SELV)

Electric system in which the voltage cannot exceed the value of extra-low voltage:
  • under normal conditions and
  • under single fault conditions, including earth faults in other electric circuits.
Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Protective Extra-low Voltage System (PELV)

Protective Extra-low Voltage System (PELV)

Definition(s)

Protective Extra-low Voltage System (PELV)

Electric system in which the voltage cannot exceed the value of extra-low voltage:
  • under normal conditions, and
  • under single fault conditions, except earth faults in other electric circuits.
Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Protection by Enclosure “t”

Protection by Enclosure “t”

Definition(s)

Protection by Enclosure “t”

Type of protection whereby all electrical equipment is protected by an enclosure to avoid ignition of a dust layer or cloud. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Encapsulation “m”

Encapsulation “m”

Definition(s)

Encapsulation “m”

Type of protection whereby parts that are capable of igniting an explosive atmosphere by either sparking or heating are enclosed in a compound in such a way that the explosive atmosphere cannot be ignited under operating or installation conditions. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Powder Filling “q”

Powder Filling “q”

Definition(s)

Powder Filling “q”

Type of protection in which the parts capable of igniting an explosive gas atmosphere are fixed in position and completely surrounded by filling material to prevent the ignition of an external explosive atmosphere. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards
Oil-immersion “o”

Oil-immersion “o”

Definition(s)

Oil-immersion “o”

Type of protection in which the electrical equipment or parts of the electrical equipment are immersed in a protective liquid in such a way that an explosive gas atmosphere which may be above the liquid or outside the enclosure cannot be ignited. Source: IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection and erection, Edition 5.0, November 2013. Global Standards