AWWA C605?
AWWA C605?
(OP)
I kknow that AWWA Standard C605 was replaced in 2014 by C605-13, does anyone have a copy of the previous standard and if so can you tell me what the section regarding hydrostatic pressure testing of the main required?
Thanks in advance.
Thanks in advance.





RE: AWWA C605?
That being said, while the amount of make-up water in a leakage test appears similar (and I guess I would be surprised if any intermediate version e.g. 2005 were different in that regard), there are some perhaps more subtle variations in other test duration/descriptions or requirements per the standards that may or may not be of any interest to or effect on some Owners. Hope this helps, and as I unfortunately do not have the 2005 version, I will like you await more learned comment.
RE: AWWA C605?
It reads as follows in "7.3.5 Test Pressure. The hydrostatic pressure shall not be less than 1.25 times the maximum anticipated sustained working pressure at the highest point along the test section unless the pressure exceeds the design pressure limit for any pipe, thrust restraint, valve fitting, or other appurtenance of the test section."
The new standard, C605-13 reads as follows in "Sec. 10.3.5 Test Pressure. The hydrostatic test pressure shall not be less than 1.25 times the stated anticipated maximum sustained working pressure of the pipeline measured at the highest elevation along the test section and not less than 1.5 times the stated sustained working pressure at the lowest elevation of the test section. However, in no case shall the test pressure exceed the rated working pressure for any joint, thrust restraint, valve, fitting, or other connected appurtenance of the test section."
I have a couple questions concerning the latest standard. 1) What is the difference between "anticipated maximum sustained working pressure" and "stated sustained working pressure"?; 2) If the test pressure at the lowest elevation is 1.5 times the stated sustained working pressure, won't the test pressure be greater than 1.5 times the sustained working pressure at a higher elevation of the pipeline?; and 3) Is it the intent of the standard to have the test pressure at the higher elevations be greater than 1.5 times the sustained working pressure?
Thanks for your thoughts on this.
RE: AWWA C605?
"Hydrostatic pressure testing requirements were changed to include the following: “not less than 1.5 times the stated sustained working pressure at the lowest elevation of the test section shall be required..."
I did notice also that now in the introductory area of this standard, in a section headed, "The following items should be provided by the purchaser..." there is also now a quite lengthy list of things to be so provided (maybe not really by the standard but instead?) by "the purchaser". That list now includes,
"21. System design pressure, required test pressure, and test duration (Sec. 10.3.5 and Sec. 10.3.4)..."