API Spec 12J-2009 pdf download.Specification for Oil and Gas Separators.
2.5 scrubber A type of separator which has been designed to handle flow streams with unusually high gas-to-liquid ratios, commonly used in conjunction with dehydrators, extraction plants, instruments, or compressors for protection from entrained liquids. 2.6 separator A vessel used in the field to remove wellstream liquid(s) from gas components that may be either two-phase which remove the total liquid from the gas or three-phase which also remove free water from the hydrocarbon liquid. 2.7 total liquid knockout A type of separator vessel used to remove the combined liquids from a gas stream. 3 Material 3.1 ASME Code Separators furnished to this specification shall conform to the material requirements stipulated in the latest edition of the ASME Code. 3.2 Selection Material selection for corrosive fluids should be selected based on a review of related API or NACE publications for materials that conform to 3.1. Consideration should be given to material selection as it relates to weight loss, sulphide stress cracking, chloride stress cracking, or other forms of corrosion. It is the responsibility of the user to determine what consideration for corrosion should be made to the vessel during its intended life (reference ASME Code, as applicable to corrosion). Corrosion guidelines are given in Annex B. 3.3 Corrosion Consideration Corrosion consideration for separators furnished to this specification shall be for the pressure containing parts of the vessel only, and as can be identified as falling within the requirements of the applicable sections of the ASME Code. Corrosion considerations for vessel internals (non-pressure parts) is by mutual agreement between the purchaser and the manufacturer and not a part of this specification. 4 Design 4.1 Type, Size, Pressure and Temperature Ratings Separators furnished to this specification may be vertical, horizontal, or spherical, and are available in sizes and MAWP ratings shown in Table 1, Table 2, and Table 3.
5.2 Painting Before shipment, separators shall be cleaned of rust, grease, scale, and weld spatter, and externally coated with one application of a good grade of commercial metal primer. Internal coating and finish coating shall be applied if so agreed upon between the purchaser and manufacturer. Special access may be required to adequately apply internal coatings to smaller diameter vessels. 5.3 Internal Coating Where internal coating is specified by the purchaser, all non-removable internal attachments shall be seal welded and prepared for coating in accordance with the purchaser’s specifications. In the absence of purchaser’s specifications, some acceptable practices are listed in Annex B. After coating, the vessel shall be stenciled in a conspicuous location “Internal Coating—Do Not Weld.” 5.4 Preparation for Shipment Prior to shipment, all foreign matter (including hydro-test water) shall be removed from the vessel, both internally and externally. All openings shall be protected with shipping covers or plugs. 6 Marking 6.1 API Nameplate Separators furnished to this specification shall be identified by a nameplate of corrosion resistant material securely attached to a suitable bracket welded to the shell, or stamped on a steel nameplate seal welded to the shell. The nameplate shall bear the information in items 1 through 9 below, as shown in Figure 1. 1) Specification 12J. 2) Manufacturer’s name. 3) Manufacturer’s serial number. 4) Year built. 5) Weight, empty, in pounds. 6) Shell size, OD × length.
6.2 ASME Code Nameplate Separators furnished to this specification shall have a nameplate affixed to the vessel as required by the latest edition of the ASME Code. In lieu of a separate API nameplate and at the discretion of the manufacturer, the information required by 6.1 may be included below the ASME Code required marking on the ASME Code nameplate. 6.3 Stamping Stamping directly on the separator shell may be injurious and should be avoided. See ASME Code for allowable stamping. 7 Inspection and Rejection 7.1 ASME Code Inspection The authorized inspector required by the ASME Code shall make all inspections specifically required by the Code plus such other inspections believed necessary to certify that all vessels authorized to be stamped with the Code symbol meet all of the applicable requirements of the Code. The authorized inspector shall sign the Certificate of Inspection on the manufacturer’s data report when the vessel, to the best of the inspector’s knowledge and belief, is complete and in compliance with all the provisions of the Code.