This practice covers the recommended method for rating the condition of electroplated test panels subjected to corrosive environments for test purposes. Please sign into an account with a subscription to this content, or email for help at support madcad. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Typical decorative deposits exposed to marine atmospheres often tend to fail by crater rusting, whereas in industrial atmospheres, they are more likely to exhibit pinpoint rusting; and the atsm atmosphere also tends to be more severe with regard to degradation of the coating system but somewhat less severe with regard to basis metal corrosion.
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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense. NOTE 1—The owner shall specify the following: who will conduct,observe, and furnish labor, furnish material and measuring devices, andpay for the tests; who is responsible for determining local groundwaterconditions; and which test is to be conducted, that is, an infiltration test oran exfiltration test. NOTE 2—The user of this practice is advised that test criteria presentedin this practice are similar to those in general use.
Pipe, in. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Referenced Documents2. Summary of Practice4. If the rate is less than or equal to the allowablelimit, the section of sewer tested is acceptable.
Significance and Use5. The values recorded areapplicable only to the sewer being tested and at the time oftesting. Preparation of the Sewer Line6. All plugsshall be secured to prevent leakage blowout due to testingpressure.
The length of main tested shall notexceed ft. Infiltration testing shall notbe used unless the groundwater level is at least 2 ft above thecrown of the pipe for the entire length of the test section. Current edition approved June 1, Published July Originally approvedin Last previous edition approved in as C — DOI: United States1are best made by either timing the filling of a small containerof known volume, or by directing flow into a container for aspecified time and measuring the content, or by using smallweirs.
If the groundwater level is less than 2 ft abovethe crown of the pipe measured from the highest elevation ofthe sewer, the exfiltration test shall be used. Fill the sewer line withwater. After the absorption period,refill the pipe to the required test head. Theminimum test period shall be 15 min and the maximum shallnot exceed 24 h. Thegroundwater elevation shall be redetermined prior to a secondtest and the test head adjusted, if necessary, in accordance with7.
Leakage Criteria8. NOTE 3—The average head on the test section is the head above thecrown of the pipe at the upstream manhole plus the head above the crownof the pipe at the downstream manhole divided by two.
If building or house leads areconnected to the main line being tested, allowance shall bemade for permissible leakage in such leads. Precision and Bias Due to the sealing effects ofgroundwater, internal flow in the sewerline, and test water, thetest conditions and results are not reproducible. The sewer line is a in. Thedistance between manholes is ft. The sewer line is an in. The sewer line test section is ftlong between manholes on a slope of 1.
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