Status: Alert Withdrawn.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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Also, it is recognized that more skill is required as the size of the branch pipe approaches the size of the run pipe. As defined in Clause 3, production welding is the execution of welds that are covered by the Standard and are to be part of a pipeline system.
The 18 J minimum requirement applies to fittings having a grade lower than Gradeflanges smaller than NPS 24, and pressure-containing valve parts having a grade lower than Grade A662 m minimum length therefore recognizes the potential for the propagation of ruptures along the pipeline Intwo new drawings were z62 to Figure 4.
CSA Z662-03 and Z662.1-03
Z662the following changes were introduced in respect to some aspects that concern the determination of class location designations: The least nominal wall thickness given for threaded pipe away from pump or compressor stations is equivalent to Schedule 40 wall thickness. Pipeline Research Council International.
Temperature measurement is typically accomplished using either temperature-indicating crayons or thermocouple-type contact thermometers. Inthe outside diameter threshold was changed from Heating that is associated with factory-made bends is already accounted for in the manufacturing standard or specification for the bend. It should be noted that carbon dioxide might additionally be present in conventional pipelines as a component of a multiphase fluid or as a component of a fluid in a gas gathering system.
This formula was adopted because of its ability to predict cold cracking susceptibility and hardenability over a suitably wide range of carbon contents the formula was developed using low alloy steels with carbon contents that varied from 0.
Sca limitations, if any, are stated elsewhere in the Standard. Further limitations on maximum permissible offset at the weld root are found in Figure 7. Specific requirements to address partial-penetration welds were first included in the Standard in All commentaries are the opinions of the respective authors and are not necessarily the opinions of CSA or its Technical Committee.
The previous Note 2 has become Note 1, and the wording has been revised for clarity. Therefore, with the revision, the duplication has been eliminated, and new clauses have been included, where necessary, to identify specific differences between the testing requirements for welding procedure specifications and z6622 of welders.
In addition, it permits inspection for any damage that might be caused by the cleaning or coating equipment, which is required by Clause 6. It is recognized that offsets greater than 1. The cluster concept was removed from the Standard in because of difficulties in definition and inconsistencies in interpretation.
Z662.1-03 Commentary on CSA Standard Z662
The least nominal wall thickness given in Table 4. Such formulae can be used to derive the fracture arrest toughness. To comply with the numerical rounding practices cea ASTM E 29, the pipeline cover dimension was changed from cm to m, and the clearance dimension was changed from cm to mm.
The PTSV1 threshold level represents the threshold stress value for fracture arrest in buried pipelines containing gases that exhibit single-phase compression, derived using the formula in the note in Clause 5. The specific heat treatment parameters to be used are to be set by the company.
Any required testing for notch toughness properties is to be done at or below the applicable cea 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.
The first two columns of Table 7.
CAN/CSA-Z | Standards Council of Canada – Conseil canadien des normes
Items that are within the defined limits of pipeline systems but are currently outside the scope of the Standard may be included in the scope in some future edition of the Standard, should the CSA Technical Committee on Oil and Gas Pipeline Systems and the Strategic Steering Committee on Oil and Gas Industry Systems and Materials deem that such additions to the scope are appropriate. All references to Clause 7 in this Commentary therefore refer to the revised clause numbering in the edition.
CSA Standards covering the manufacture of components were developed in the s and continue to date. This ensures that you are always up-to-date and saves you both time and money.
Z Commentary on CSA Standard Z
June 47 Z Such systems are required to operate at or below the maximum operating pressure of the piping. Limitation 9 recognizes that coiled tubing made to ASTM A is not equivalent to conventional pipe. The notch toughness properties are required to be proven at z6662 below the applicable design temperature, in order to ensure that the required notch toughness properties will be available during pressure testing and in service.