Diesel corrosion

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Comprob
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Diesel corrosion

Post by Comprob » Mon Sep 30, 2019 3:17 pm

Seems like since its inception , no one has really done anything to correct the corrosion inside diesel tanks. I can only think of what the tank itself must look like. Now homeowner heating oil tanks have this crap in them and that will eat them alive

ZMiller
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Re: Diesel corrosion

Post by ZMiller » Tue Oct 01, 2019 7:24 am

The corrosion issues now that the causes have been determined in tanks and sumps have pretty much been resolved. Those stuck in the treatment and treadmill loop may be suffering for a little while longer. For some tanks it may be to late to address and save the tank but your probably going to see issues tapper off over the next year or two.
When you are dead it's likely you won't know it. It could be difficult for others. It's the same if you are stupid.
"Tact is the ability to tell someone to go to Hell in a way that they will begin looking forward to the trip"

bugbuster
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Re: Diesel corrosion

Post by bugbuster » Tue Oct 01, 2019 9:26 pm

Funny, Zane:

I have yet to see data on:
1. Historical in UST corrosion rates or incidence of corrosion related failures (with approximate cost per incident).
2. Current, annual incidence rates (same as #1).

Without both of these, I'm scratching my head about your comment about the issue has been resolved. We have a 100 year + history of diesel fuel system corrosion but it is all anecdotal. Yes, there was a spike in the number of reported corrosion incidents a few years ago. Yes, the number of new reports per year seems to be decreasing.

I'm yet to see compelling data supporting either the perception of an increased number of corrosion events after ULSD was introduced, or more recent decrease in the number of events. Receiving few calls about an issue can simply reflect the attention span of stakeholder community members. It could be very different from the actual occurrence rate.

Cheers,
Fred

ZMiller
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Re: Diesel corrosion

Post by ZMiller » Thu Oct 03, 2019 8:12 pm

In all cases. I say ALL.

SUMPS
On sites where corrosive issues in associated and or connected sumps, on equipment or a system component connected, a tank or all tanks associated within the farm will be leaking when over pressurized. Tank(s) where saturated hydrocarbon vapors and or lower than normal PH empty tank space atmospheres are Not migrating (leaking) out of a tank into connected and or associated sumps will normally and in almost All circumstances not exhibit corrosion.

In short if you see evidence of corrosion in a sump the a tank or tanks associated at one time or another is or has been leaking.

TANKS
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bugbuster
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Re: Diesel corrosion

Post by bugbuster » Sun Oct 06, 2019 8:38 am

Okay, Zane.

I'm guessing that - like me - you have seen >1,000 turbine distribution manifold sumps (spill containment wells).

What percentage (of those in operation for more than a few months) have been have been corrosion-free? What percentage have had moderate to heavy corrosion covering the turbine distribution manifold?

Are you really certain that every UST with a turbine distribution manifold in the latter category is leaking?

If true, that would surprise me. I hope that if that percentage of UST systems were leaking measurably, the hew and cry would be much louder than it is - from the insurers, if not the site owners.

Again, I readily admit that my experience is biased. I have never done a biodeterioration risk survey for a client that didn't have a substantial percentage of high risk sites. However, the percentage of high-risk sites with actual fuel-leakage has been small.

Cheers,
Fred


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