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ASTM G62 PDF

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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This may be considered to be a nondestructive test because of the relatively low voltage.

ASTM G62 – 14

This method will determine the existence of any gross faults in thin-film pipeline coatings. It is effective on films up to 0. The values given adtm parentheses are for information only. This may be considered to be a nondestructive test because of the relatively low voltage.

Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend.

It is effective on films up to 0. It is 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. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Originally published as G 62 — If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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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 to dry before testing.

A ground wire connects the detector with the low-resistance metal surface. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

ASTM-G62, –

Now touch astj electrode to a second point where the surface is bare and note that the audible signal will be activated. This is particularly important if formed surfaces are to be inspected.

This method will not, however,? This electrical contact will activate an alarm alerting the operator of the incidence of a holiday.

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. Reagents and Materials 7. NOTE 1—Ordinary tap water will suffice to wet the sponge electrode when inspecting coatings up asstm 0.

Clip the ground wire to some point where the metal surface is bare. Divide this voltage by the known coating thickness aztm obtain the amount of volts per millimetre mil. This type of holiday detector will not detect thin spots in pipeline coatings.

Last previous edition G 62 — F Standard Specification for Driven Fasteners: Land Use and Development. Because of y62 high voltages involved, do not touch the ground wire and the metal part of the electrode at the same time if the instrument is on. This may be considered to be a nondestructive aastm because of the relatively low voltage. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER.

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Turn on the holiday detector. Take care to keep the electrode 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. It is 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. NOTE 2—The dielectric breakdown voltage per millimetre mil can be determined for each coating experimentally as atm It should be noted, however, that this method will not detect thin spots in the coating.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. This method will not, however, find any thin spots in satm coating.

Procedure for Method B This book also exists in the following packages Historical Asm s – view previous versions of standard Translated Version s: Procedure for Method A Therefore, they are useful for testing voids, pinholes and thin spots in the coating, but would not be useful as a coating thickness quality control tool.