Background of SSPC PA 2; Overview and Purpose of SSPC-PA 2 (); Purpose of ASTM D ; Definitions; Gage Descriptions; Calibration & Verification. ASTM D focuses on gage use. • SSPC-PA 2 () focuses on acceptability of acquired measurements. • Both address ferrous and non-ferrous metal. This standard is issued under the fixed designation D ; the number immediately following the 1 This practice is under the jurisdiction of ASTM Committee D01 on Paint and . manufacturer’s specifications, n—a statement or set.
A total of aztm areas must be measured three in the first 1, square feet and one additional area in each of the 12 remaining 1,square-foot areas or portions thereof.
If you need to be able to add standards to the monitoring service, you must register as a user with your own username and password. While their use has declined, they are still readily available and used by some. It aatm the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Five different Coating Thickness Restriction Levels established.
Contact us at salg standard. If there is no place to measure in a given direction, then no measurement in that direction is necessary. For the purpose of final acceptance of the total DFT, the cumulative thickness of all coating layers in each area must be no less than the cumulative minimum specified thickness and no greater than the cumulative maximum specified thickness.
Content only available by subscription. The certified shim should be placed onto a smooth, uncoated metal surface to remove any effect of the astk roughness during this process. One type of magnetic gage referenced in original SSPC-PA 2 for measuring dft Figures courtesy of the author except where otherwise indicated. This method is used when the largest dimension of the unit is less than 10 feet.
A one-point or two-point accuracy verification procedure can be performed as described earlier for Type 1 gages.
If no Restriction Level is specified, default is based on conformance requirement. This service is not available if you are a URL user where you do not log in d70091 an email address. Yet the requirements of SSPC-PA 2 regarding gage calibration, verification of gage accuracy and adjustment procedures, the number of measurements to obtain, and the tolerance of the measurements are complex and should be fully understood by the specification writer before invoking PA 2 in a contract.
Measuring Dry Film Coating Thickness According to SSPC-PA 2KTA University
There are three categories of coated area: Addresses measurement of coatings on ferrous and non-ferrous metal surfaces. Register for a trial account.
No further reproductions authorized. For these gages, a permanent magnet is brought into direct contact with the coated surface. The moment new editions of the standards you monitor are released, changes are made, or appendixes are published, you will be alerted by email. Six appendices from version included. This process is described later in this article. April 6, at Some carts may have several small pipe sections, and the total coated surface may exceed square feet.
Appendix 7 was added to accommodate pipe coaters that need to determine ast, thickness conformance on non-flat or non-plate areas, including smaller pipe sections on a cart or rack and longer pipe spools. We have allowed it to become more technologically complex while making the data easier to analyze.
The two documents are designed to be used together. This step sounds reasonably straightforward but poses several hidden challenges. Adjustments to the gage may or may not be required. You currently cannot view this content. He holds an A.
A one-year calibration interval is a typical starting point suggested by gage manufacturers. The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use d709. A test certificate or other documentation showing traceability to a national metrology institution is required.
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