Olf or OLF may refer to:
- Our Lady of Fatima Secondary School, Aligarh, a Catholic school situated in Aligarh, India
- Office québécois de la langue française, a governmental institution in Quebec
- Olf (unit), a non-SI unit used to measure the odor emission of people and objects
- Outlying Landing Field, a type of airfield used by the United States Navy.
- Oromo Liberation Front, a separatist group in Ethiopia
- OLF, the Norwegian Oil Industry Association
- Ohio LinuxFest, an annual technology conference and expo held in Columbus, Ohio.
- Ontario Linux Fest, an annual Linux and Open Source conference held in Toronto, Ontario.
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Olf (unit)
The olf is a unit used to measure the strength of a pollution source. It was introduced by Danish professor P. Ole Fanger; the name "olf" is derived from the Latin word olfactus, meaning "smelled".
One olf is the sensory pollution strength from a standard person defined as an average adult working in an office or similar non-industrial workplace, sedentary and in thermal comfort, with a hygienic standard equivalent of 0.7 baths per day and whose skin has a total area of 1.8 square metres. It was defined to quantify the strength of pollution sources which can be perceived by humans.
The perceived air quality is measured in decipol.
Examples of typical scent emissions
See also
References
Standardization in oil industry
Purpose This site seeks to promote deeper standardization within the oil and energy industry by highlighting areas where standardization has worked very well and where it has not and why, and provoking discussions on the path forward for better standardization.
The overall purpose of the document is to issue a guideline on the application of IEC 61508 and IEC 61511 in the Norwegian Petroleum Industry, and thereby simplify the use of the standards.
According to the PSA management regulations (§1 and §2), performance requirements shall be established for all safety barriers on an installation. For instrumented safety systems, special reference is made to IEC 61508 and this document as the recommended standard for specification, design and operation of such safety systems.
Whereas IEC 61508 describes a fully risk based approach for determining SIL (Safety Integrity Level) requirements, this document provides minimum SIL requirements for the most common instrumented safety functions on a petroleum production installation (ref. chapter 7). Deviations from these requirements may however be identified (ref. section 7.7), and in such case the overall methodology and documentation should be in accordance with IEC 61508.
