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From: Lew Hodgett (no email)
Date: Sun Jun 03 2007 - 15:53:50 EDT
Norm of Bandersnatch wrote:
> I found that the seawater cooling hose entering the
> strainer just downstream from the seawater pump (written up several times
> in the past) had come off the hose barb. The hose clamp had failed and the
> hose had come off the barb, but not completely, about half the water was
> going on downstream (and keeping the exhaust hose thermoswitch from closing
> and shutting down the genset) and half spraying into the engine room.
>
Sounds like you may have missed putting double clamps on this connection?
> The size 12 spiral hose clamp is marked "IDEAL 300SS", the letters UPC
> diagonally in a shield, and a R in a circle. There is significant rust
> around the break but nowhere else. It would have been noticed during a
> careful inspection.
>
Did some research on hose clamps a couple of years ago, and was very
disappointed.
Very difficult to find 316L clamps, most were lower grades of 300 series
stainless.
The operative words are "stain" and "less".
They will rust, it's just a matter of time.
My approach is to double clamp every connection that, if it fails, could
sink the vessel, then plan on
changing out clamps every couple of years.
Just another preventative maintenance item.
Lew
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