Free download api 1104 21st edition code#

To add to the above, with respect to NDE, the following is also relevant: RE: API 1104 21st edition, Essential Variables SectionIX (Petroleum) 13 Jul 17 10:29 (2) When a cluster of buildings intended for human occupancy requires a Class 2 or 3 location, the class location ends 220 yards (200 meters) from the nearest building in the cluster. (1) A Class 4 location ends 220 yards (200 meters) from the nearest building with four or more stories above ground. (c) The length of Class locations 2, 3, and 4 may be adjusted as follows: (4) A Class 4 location is any class location unit where buildings with four or more stories above ground are prevalent. (The days and weeks need not be consecutive.) (ii) An area where the pipeline lies within 100 yards (91 meters) of either a building or a small, well-defined outside area (such as a playground, recreation area, outdoor theater, or other place of public assembly) that is occupied by 20 or more persons on at least 5 days a week for 10 weeks in any 12-month period.

(i) Any class location unit that has 46 or more buildings intended for human occupancy or

(2) A Class 2 location is any class location unit that has more than 10 but fewer than 46 buildings intended for human occupancy. (ii) Any class location unit that has 10 or fewer buildings intended for human occupancy. (b) Except as provided in paragraph (c) of this section, pipeline locations are classified as follows: (2) Each separate dwelling unit in a multiple dwelling unit building is counted as a separate building intended for human occupancy. (1) A “class location unit” is an onshore area that extends 220 yards (200 meters) on either side of the centerline of any continuous 1- mile (1.6 kilometers) length of pipeline. The following criteria apply to classifications under this section. (a) This section classifies pipeline locations for purposes of this part. regulator the 20th Edition is still relevant in the United States.Īs far as Class Locations is concerned, several ASME codes, such as Table 841.3.2-1 in ASME B31.8 make such reference, but class locations, for purposes of definition can be found in 49CFR Part 192. Also, as a point of information, the 21st Edition of API 1104 has not been incorporated by reference by the U.S.

Free download api 1104 21st edition code#

I personally always reference the relevant code so there is no misunderstanding. RE: API 1104 21st edition, Essential Variables joerg12 (Petroleum) In your case, removing the land face would be considered to be a major change using the above criteria. Opening or land of up to +/- 50% of the nominal value without the need for requalification. It would seem reasonable toĪllow changes to the bevel angle of up to +20%/-5% of the nominal value and changes to the root What is considered a major change?ĪPI 1104 does not define what constitutes a minor change in joint design. Qualification of two different welds made using different processes does not demonstrate that the combination of processes will produce welds having acceptable properties.Īs per 5.4.2.3 a major change in joint design has to be considered as an essential variable. Two PQRs written for tests on welds made using different welding processes cannot be used to support a new WPS that includes the use of multiple welding processes. Not all welding methods are applicable to all welding processes.

Welding methods (or methods of application) include manual, semiautomatic, mechanized, or automatic, and combinations of these methods. What does method of application mean?Įight possible welding processes are listed in Section 1 (of API 1104). PR-186-124502-R01)from which responses follow:Īs per 5.4.2.1 a change in the welding process or method of application has to be considered as an essential variable. PRCI publishes the 'Guidelines for Interpretation and Application of API 1104 – Twenty-first Edition' (Catalog No.