{"id":428191,"date":"2024-10-20T07:11:01","date_gmt":"2024-10-20T07:11:01","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d7975-2022\/"},"modified":"2024-10-26T13:38:05","modified_gmt":"2024-10-26T13:38:05","slug":"astm-d7975-2022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d7975-2022\/","title":{"rendered":"ASTM-D7975 2022"},"content":{"rendered":"

ASTM D7975-22<\/h3>\n

Active Standard: Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCRx-F(Tm\u00b0C)\u2009(Manual Expansion Field Method)<\/h4>\n
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ASTM D7975<\/h4>\n

Scope<\/strong><\/p>\n

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1.1<\/span> This test method covers the use of manual vapor pressure instruments to determine the vapor pressure of crude oils exerted in a vacuum. This test method is suitable for testing samples that exert a vapor pressure between 25\u2009kPa and 180\u2009kPa at 37.8\u2009\u00b0C at vapor\/liquid ratios from 4:1 to 0.25:1 (X = 4 to 0.25, see 3.2.4<\/span>).<\/p>\n

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Note 1:<\/span> This test method is suitable for the determination of the vapor pressure of crude oils at temperatures from 0\u2009\u00b0C to 60\u2009\u00b0C and pressures up to 500\u2009kPa, but the precision and bias statements (see Section 15<\/span>) may not be applicable.<\/span><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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1.2<\/span> This test method is meant primarily for use under field conditions for immediate evaluation of vapor pressure for storage, transport, or operational uses.<\/p>\n<\/p><\/div>\n

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1.3<\/span> This test method is not intended for use in custody transfer applications. Test Method D6377<\/span> shall be used for custody transfer applications.<\/p>\n<\/p><\/div>\n

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1.4<\/span> This test method provides a reasonable confirmation for the presence of light ends in the source material given that the partial pressure of low boiling components contribute significantly to total vapor pressure.<\/p>\n<\/p><\/div>\n

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1.5<\/span> This test method allows both sample collection and subsequent vapor pressure measurement of crude oil samples directly from the sample source. The collected sample may also be transferred to an automated vapor pressure instrument such as used for Test Method D6377<\/span>. The field test apparatus is suitable for transportation provided suitable over-pack is used to meet the regulations for the transportation of dangerous goods in the transportation jurisdiction(s).<\/p>\n<\/p><\/div>\n

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1.6<\/span> This test method allows the determination of vapor pressure for crude oil samples having pour points below 0\u2009\u00b0C and flow at the sampling conditions to allow inlet to the apparatus.<\/p>\n<\/p><\/div>\n

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1.7<\/span> The values stated in SI units are to be regarded as standard.<\/p>\n

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1.7.1<\/span> Exception\u2014<\/span>Other units of measurement are included in this standard for ease of use in multiple jurisdictions.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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1.8<\/span> This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.<\/i><\/p>\n<\/p><\/div>\n

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1.9<\/span> This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.<\/i><\/p>\n<\/p><\/div>\n

Keywords<\/strong><\/p>\n

crude oil; crude petroleum products; expansion method; field measurement; live crude oil; vapor pressure; VPCRx-F(Tm\u00b0C) expansion;<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 75.080 (Petroleum products in general)<\/p>\n

DOI:<\/strong> 10.1520\/D7975-22<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

D7975-22 Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCRx-F(Tm\u00b0C)\u2009(Manual Expansion Field Method)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2022<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":428201,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2637],"product_tag":[],"class_list":{"0":"post-428191","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astm","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/428191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/428201"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=428191"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=428191"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=428191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}