[Acoustics] ADCP Head cracking

[Black, Nathan]

Does anyone have any comments on this situation (see the message below)? 

The pictures that are associated with message are post on Kelvin's FTP site:

ftp://ftpdilurb.er.usgs.gov/pub/adcp/Files/NBlack/

Thanks for your time.

Nathan Black, EIT

Water Management Department
Idaho Power Company
(O) 208.388.2754
(C) 208.866.3786



Hi RDI techs - 

I am a fisheries technician with Idaho Power Company.  I am sending photos of a situation which is developing on our Workhorse Rio Grande.  First of all it, seems to be working fine.  About a month ago I noticed a cracking look developing on three of the heads of our ADCP.  The cracks do not seem to be in the red part but more in the clear sealant which covers the heads.  It is similar to varnish which has developed an alligator skin effect.  It is not pealing off but looks like there may be a problem developing.  I should also note that the cracks do not look like water can get in them.  I am writing this e-mail to see what you think I should do.  We would like to continue to use the unit through our field season which concludes at the end of September.  If you feel it is an issue which needs to be addressed sooner please let me know.  What should I do??

Jim Trainer
Idaho Power Company
P.O. Box 70
Boise, ID 83707
(208) 388-5497




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