Documents Similar To ASTM Gpdf. ASTM Gpdf. Uploaded by. Diego Mauricio Rozo · QCF Holiday Test. Uploaded by. minhnn. ASTM G (Reapproved )e1 – Designation: G 62 – 87 (Reapproved )e1 Standard Test Metho. Purchase your copy of ASTM G62 – 14 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
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Plug the ground wire into the holiday detector. Your comments will receive careful consideration at a meeting of the responsible technical committee, astmm you may attend. A common factory setting for sensitivity is V.
This method will not, however,? The detector will ring if it passes any void, pinhole, or g2 of the coating thinner than the minimum allowable thickness.
ASTM G62 – 14
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Last previous edition G 62 — This method is considered destructive because the high voltages involved generally destroy the coating at thin spots. This method will determine the existence of any gross faults in thin-film pipeline coatings.
Take care to keep the electrolyte at least When a holiday is picked up by the audible alarm, the electrode can be turned on end and the exact spot of failure can be noted by searching with the tip of the electrode. This method can be used on any thickness of pipeline coating and utilizes applied voltages between and V d-c.
Turn on the holiday detector. This method can be used to verify minimum coating thicknesses as well as voids in quality-control applications.
Clip the ast wire to some point where the metal surface is bare. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER.
This standard does not purport to address all of the safety concerns, if any, associated with its use. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee v62 Standards, at the address shown below.
It should be noted, however, that this method will not detect thin spots in the coating, even those as thin as 0. Register for a trial account.
ASTM G62 – 07 Standard Test Methods for Holiday Detection in Pipeline Coatings
Standardization of Instruments 9. This method will determine the existence of any gross faults in thin-? T62 of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. For polymeric precoated corrugated steel pipe, the reporting requirements of Speci? This method will not, however, find any thin spots in the coating.
Individual reprints single or multiple g26 of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. This may be considered to be a nondestructive test because of the relatively low voltage. It is effective on films up to 0.
The detector is now ready to operate by passing the damp sponge over the coated surface. Reagents and V62 7. If the surface is in an environment where electrolytes might form on the surface, such as salt spray, wash the coated surface with fresh water and allow awtm dry before testing.
Active view current version of standard. Procedure for Method B It should be noted, however, that this method will not detect thin spots in the coating.
This electrical contact will activate an alarm alerting the y62 of the incidence of a holiday. This standard is subject to revision at any time by the responsible technical committee and must astk reviewed every? Increase the holiday detector voltage over a known coating thickness and measure the voltage at the point where the detector will just begin to ring.
Print 1 2 3 4 5 page sstarting from page current page.
It is effective on? Divide this voltage by the known coating thickness to obtain the amount of volts per millimetre mil. This may be considered to be a nondestructive test because of the relatively low voltage.
Specimens that were not adjacent in the as-produced condition, or were taken from different lengths of pipe, may represent differing process conditions. Attach the ground wire lead with battery clamp and the wand to the terminals.
These are used on the coatings of relatively high-electrical resistance when such coatings are applied to the surface of materials of low-electrical resistance, such as steel pipe. This method can be used on any thickness of pipeline coating and utilizes applied voltages between and 20 V d-c. Now touch the electrode to a second point where the surface is bare and note that the audible signal will be activated. This may be considered to be a nondestructive test because of the relatively low voltage.