Api rp 500 download. API 500/505 Classification 2019-08-03

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Reference Section 2 for publications for other possible applications. Electrical installations in areas where flammable liquids, flammable gases or vapors, or combustible liquids are produced, processed, stored or otherwise handled can be suitably designed if the locations of potential sources of release and accumulation are clearly defined. Typically, most of the platform requires Class I Division 2. Class I locations are either Division 1 or Division 2, or are unclassified: Class I, division 1 Locations 1 in which ignitable concentrations of flammable gases or vapors can exist under normal operating conditions, 2 in which ignitable concentrations of such gases or vapors may exist frequently because of repair or maintenance operations or because of leakages, or 3 in which breakdown or faulty operation of equipment or processes might release ignitable concentrations of flammable gases or vapors and might also cause simultaneous failure of electrical equipment in such a way as to directly cause electrical equipment to become a source of ignition. Section 9 is applicable to locations in which flammable petroleum gases and vapors and volatile flammable liquids are processed, stored, loaded, unloaded, or otherwise handled in petroleum refineries. Unclassified All areas in the facility that are not Zone 0, Zone 1, or Zone 2 are considered unclassified.

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API RP 500 (R2002)

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Arcing electrical equipment in unclassified areas need not be explosion-proof. Since 1924, the American Petroleum Institute has been a cornerstone in establishing and maintaining standards for the worldwide oil and natural gas industry. This document applies to the classification of locations for both temporarily and permanently installed electrical equipment. Class I locations are those in which flammable gases or vapors are or might be present in the air in the quantities sufficient to produce explosive or ignitable mixtures. I am working with an enclosure that requires ventilation but I do not have a standard for the flow rates and opening dimensions which would be sufficient. Can anyone post this section here for me, or direct me to a site that will allow me to preview the document? Group I is for use in describing atmospheres that contain firedamp a mixture of gases, composed mostly of methane, found underground, usually in mines.

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API RP500

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Our work helps the industry invent and manufacture superior products consistently, provide critical services, ensure fairness in the marketplace for businesses and consumers alike, and promotes the acceptance of products and practices globally. I have been told in another forum to check out section 4. Consider a few elevations or sections where the classification is Division 1 around vents etc. Class I, zone 2 Locations 1 in which ignitable concentrations of flammable gases or vapors are not likely to occur in normal operation and if they do occur will exist only for a short period; 2 in which volatile, flammable liquids, flammable gases, or flammable vapors are handled, processed, or used, but in which the liquids, gases, or vapors are confined within closed containers or a closed system from which they can escape only in case of accidental rupture or breakdown of such containers or system, or as a result of the abnormal operation of equipment with which the liquids or gases are handled, processed, or used; 3 in which ignitable concentrations of flammable gases or vapors normally are prevented by positive mechanical ventilation, but which may become hazardous because of failure or abnormal operation of the ventilation equipment; or 4 which are adjacent to a Class I, Zone 1 location from which ignitable concentrations of flammable gases or vapors could be communicated unless such communication is prevented by adequate positive-pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided. Refer to those documents for installation requirements, protection techniques, and wiring methods that align with the area classification criteria applied. The following items are beyond the scope of this document. Unclassified All areas in a facility that are not Division 1 or Division 2 are considered unclassified.

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Electrical installations in areas where flammable liquids, flammable gases or vapors, or combustible liquids are produced, processed, stored or otherwise handled can be suitably designed if the locations of potential sources of release and accumulation are clearly defined. While it is important for area classifications at refineries, production and drilling facilities, and pipeline facilities to agree to some extent, there are differences in production, drilling, transportation, and refining facilities. Section 13 is reserved for future use. Production facilities contain, or may contain, flammable gases and vapors in normal operations. Reference Section 2 for publications for other possible applications. It is intended to be applied where there may be a risk of ignition due to the presence of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors, mixed with air, under normal atmospheric conditions identified throughout this document as gases and vapors.

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Api Rp 500 Free Download

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Section 8 includes applications that are common to several of the facility types described in Section 9 through Section 14. Such extreme conditions require emergency measures at the time of occurrence. I am not in the petroleum industry, but I do work with a fair amount of hardware in classified hazardous locations. Pipeline facilities may include pump and compressor stations, storage facilities, manifold areas, valve sites, and pipeline right-of-way areas. Section 10 is applicable to locations surrounding oil and gas drilling and workover rigs and production facilities on land and on marine fixed bottom-founded, non-floating platforms where flammable petroleum gas and volatile liquids are produced, processed e. This publication is only a guide and requires the application of sound engineering judgment. This publication is only a guide and requires the application of sound engineering judgment.

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The following items are beyond the scope of this document: a piping systems used for odorized natural gas used as fuel for cooking, heating, air conditioning, laundry, and similar appliances; b catastrophes such as well blowouts or process vessel ruptures—such extreme events are not predictable and require emergency measures at the time of occurrence; c the suitability of locations for the placement of non-electrical incendiary equipment; d classification for locations containing combustible dust, ignitable fibers, or flyings; e installations underground in mines; f areas for the processing and manufacture of explosives; and g areas where the presence of flammable mist may give rise to an unpredictable risk and that require special consideration Recommendations for determining the degree and extent of classified locations for specific examples of situations commonly encountered in petroleum facilities are given in Section 8 through Section 14. Section 14 is applicable to onshore and offshore facilities handling the delivery of flammable or combustible petroleum liquids or flammable gases. Noteworthy papers in OnePetro Use this section to list papers in OnePetro that a reader who wants to learn more should definitely read External links Use this section to provide links to relevant material on websites other than PetroWiki and OnePetro See also. Section 10 is applicable to locations surrounding oil and gas drilling and workover rigs and production facilities on land and on marine fixed bottom-founded, non-floating platforms where flammable petroleum gas and volatile liquids are produced, processed e. General-purpose enclosures are accepted in these areas.

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API RP 500

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Normal atmospheric conditions are defined as conditions that vary above and below reference levels of 101. I am not looking for a handout I just don't want to waste my company's money on a standard that doesn't actually help us out. Some differences include the process conditions, types and quantities of products handled, the physical size of typical facilities, and varying housing and sheltering practices. Class I, division 2 Locations 1 in which volatile, flammable liquids or flammable gases are handled, processed, or used, but in which the liquids, vapors, or gases normally will be confined within the closed containers or closed system from which they can escape only in case of accidental rupture or breakdown of such containers or systems, or in case of abnormal operation of equipment; 2 in which ignitable concentrations of gases or vapors normally are prevented by positive ventilation, and which might become hazardous through failure or abnormal operation of the ventilation equipment; or 3 which are adjacent to a Class I, Division 1 location, and to which ignitable concentrations of gases or vapors might occasionally be communicated unless such communication is prevented by adequate positive-pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided. It is intended to be applied where there may be a risk of ignition due to the presence of flammable gases, flammable liquid produced vapors, or combustible liquid produced vapors mixed with air under normal atmospheric conditions. General-purpose enclosures are acceptable in these areas.

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Class I, zone 1 Locations 1 in which explosive or ignitable concentrations of flammable gases or vapors are likely to exist under normal operating conditions; 2 in which ignitable concentrations of flammable gases or vapors may exist frequently because of repair or maintenance operations or because of leakages; 3 in which equipment is operated or processes are carried on, of such a nature that equipment breakdown or faulty operations could result in the release of ignitable concentrations of flammable gases or vapors and cause simultaneous failure of electrical equipment in a mode to cause the electrical equipment to become a source of ignition; or 4 that is adjacent to a Class I, Zone 0 location, from which ignitable concentrations of gases or vapors could be communicated, unless such communication is prevented by adequate positive-pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided. Section 13 is reserved for future use. Pipeline facilities may include pump and compressor stations, storage facilities, manifold areas, valve sites, and pipeline right-of-way areas. This document applies to the classification of locations for both temporarily and permanently installed electrical equipment. The FileOpen Plug-In works with Adobe Reader and other viewers.

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