Status: Alert Withdrawn. Norwegian title: Oil and Gas Pipeline Systems and Commentary on CSA Standard Z, Oil and Gas Pipeline Systems. English title. CSA Special Publication Z Commentary on CSA Standard Z, Oil and Gas Pipeline Systems Published in June by Canadian Standards. Hyperlinks from the Z Standard to the corresponding clauses in the Z and. Special Publication. Z Commentary on CSA Standard.
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The use of a count of the buildings intended for human occupancy was changed to the use of a count of the dwelling units intended for human occupancy, with each unit in a multipledwelling-unit building being counted as a separate dwelling unit. Any required testing for notch toughness properties is to be done at or below the applicable minimum design temperature for the piping, in order to ensure that the required amount of notch toughness will be available during pressure testing and in service.
Oilfield Steam Distribution Pipelines Should the pipeline design involve a change in direction from the alignment used for the crossing to parallel alignment before a662 7 m distance is reached, it is considered that the crossing, for the purposes of Clause 4.
Although detailed documentation, such as mill test reports, often provide useful historical data for future reference e.
Z662.1-03 Commentary on CSA Standard Z662
In full-scale burst-test experiments, it has been found occasionally that field circumferential welds caused fracture arrest by fracturing in advance of the propagating fracture front, thereby interrupting z6622 continuity of the pipeline and arresting the fracture. Category III pipe requires proven pipe body notch toughness properties in the form of energy absorption only; the details of such requirements are contained in CSA Z Another problematic aspect is that each multiple-dwelling-unit building has the same effect as a single-dwelling-unit building, given that each is counted as one building.
Two new clauses Clauses 4. The note was added for instruction on the preparation of half-circumference butt weld test joints, in instances where they are permitted to be used see Clause 7. The definition of gas was changed in to accommodate the coverage of gaseous service fluids other than fuel gas and sour gas; however, untilnone had been added. Designers are cautioned that the requirements in this Csaa may not be appropriate for gases other than natural gas, manufactured gas, or synthetic cwa gas.
The use of fracture-arrest devices has been recognized for many years as a possible measure for the control of fracture length; however, the availability of pipe with sufficient notch toughness properties has made such devices unnecessary. Inthe referenced CSA welding consumables standards W It is normal practice for dents that do not meet the specified acceptance criteria to be cut out as a cylinder; however, it is recognized that the company may prefer to use any of the repair methods permitted in Clause Although most material standards and specifications are developed with some specific use in mind, the limitations on their use are not usually stated in the standard or specification.
CAN/CSA-Z | Standards Council of Canada – Conseil canadien des normes
Low-voltage less than 35 kV alternating current lines pose different concerns than high-voltage alternating current lines. Such standards are based on the concept of a cold working-pressure rating for flanges and valves, and no specific pressure rating for fittings. Materials for such items are considered to be qualified for use if the company is satisfied that the materials are suitable for the intended service conditions.
In addition, one of the reasons for the publication of the original Z June 29 Z The pipe tested predated the invention of the continuous welding process in and was manufactured from steel made by a process Bessemer that is no longer used.
A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition. The previous Note 2 has become Note 1, and the wording has been revised for clarity. The analyses resulted in the adoption of two toughness levels 18 J minimum and 27 J minimum.
Learning resources Learn more about standardization and the Standards Council of Canada. Buried oilfield water pipelines are additionally required to be covered to a depth sufficient to protect them from freezing. The one-mile density index applied to any specific nonsliding one-mile length of pipeline, and the ten-mile index applied to any specific non-sliding tenmile length of pipeline. Depending on interpretation, this clause enabled the designer to limit the extent of Class 2 003 Class 3 caa to m beyond the last dwelling unit in the cluster.
The symbol was aligned with the applicable clause, figure, or table number, and it was intended to cssa the general location of the change, rather than the precise location.
Supplement to B31 — Pressure Piping B This provision recognizes that the previous reference to CSA Z is no longer appropriate.
Standards Council of Canada
Inthis clause was revised to reference the same destructive weld testing requirements as the welding procedure 6z62 qualification testing i.
This process would be repeated after each weld pass. The notch toughness properties are required to csw proven at or below the applicable design temperature, in order to ensure that the required notch toughness properties will be available during pressure testing and in service. The intent of the new wording in Clause 4. The specific heat treatment parameters to be used are to be set by the company. The rationale for this is that the criteria that affect the location of the end boundary at one end of the class location may be different 0 the criteria that affect the location of the end boundary at the other end of the class location.