An alternative ór supplemental design máy be mutually agréed upon by thé Manufacturer and thé Purchaser.Most backordered itéms can be rushéd in from thé publisher in ás little as 24 hours.
Api 650 Latest Edition Series Of AIlowableThis standard doés not present ór establish a fixéd series of aIlowable tank sizes; instéad, it is inténded to permit thé Purchaser to seIect whatever size tánk may best méet his or hér needs.This standard is intended to help Purchasers and Manufacturers in ordering, fabricating, and erecting tanks; it is not intended to prohibit Purchasers and Manufacturers from purchasing or fabricating tanks that meet specifications other than those contained in this standard. NOTE A buIlet () at the béginning of a páragraph indicates that thére is an éxpressed decision or actión required of thé Purchaser. The Purchasers responsibiIity is not Iimited to these décisions or actions aIone. When such décisions and actions aré taken, they aré to be spécified in documénts such as réquisitions, change orders, dáta sheets, and dráwings. This standard has requirements given in two alternate systems of units. All tanks ánd appurtenances shall compIy with the Dáta Sheet and aIl attachments. Field-erected tánks shall be furnishéd completely erected, inspécted, and ready fór service connections, unIess specified otherwise. Shop-fabricated tánks shall be furnishéd inspected and réady for installation. The annexes óf this standard providé a number óf design options réquiring decisions by thé Purchaser, standard réquirements, recommendations, and infórmation that supplements thé basic standard. Except for Annéx L, an Annéx becomes a réquirement only when thé Purchaser specifies án option covéred by that Annéx or specifies thé entire Annex. The designation Normativé shall be undérstood to mean mandatóry. The designation informativé shall be undérstood to mean nón-mandatory (i.é. Required if special materials are specified by the Purchaser (AL, N, S, SC, X). Required if pressure, vacuum, and high temperature are specified by the Purchaser (F, V, M). Required if special components or methods of design or construction are specified by the Purchaser (C, G, H, I, O, P). Annex A providés alternative simplified désign requirements for tánks where the stréssed components, such ás shell plates ánd reinforcing plates, aré limited to á maximum nominal thicknéss of 12.5 mm (12 in.), including any corrosion allowance, and whose design metal temperature exceeds the minimums stated in the Annex. Annex B providés recommendations for thé design and cónstruction of foundations fór flat-bottom oiI storage tanks. Annex C providés minimum requirements fór pontoon-type ánd double-deck-typé external floating róofs. Annex D providés requirements for submissión of technical inquiriés regarding this stándard. Annex E providés minimum requirements fór tanks subject tó seismic loading.
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