About charles frenzel
I've been writing all my life. I've also painted, composed, sculpted, contributed to molecular research, advanced some mathematical concepts, lived on a sailboat, and worked for a Nobel Prize winner. Nothing in my life has pleased me more than to share my life with my wife and friend of over forty years.
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Flash Rust: The Ideas You Need
July 23, 2019 at 11:48 am
good afternoon doctor
I work on the docks of Puerto Belgrano in the painting of navy ships.
Recently hydrojetting has been incorporated.
I have the SSPP-SP 12.
I would need to explain time in hours to paint.
Well, there are companies that clean everything takes days, then wash and paint.
Where is that written?
I understood that what is done is painted in the daytime.
We work with Hempel, International, PPG.
We do not have access to courses for the cost in dollars, and we learn from the internet.
I’m on linkedin
Thank you
I await your comments
Herminia Faini
Supervisor
Laboratory
January 13, 2020 at 5:02 pm
Charles Frenzel just showed me your email today, January 13, 2020. SSPC-SP12 by now has been replaced by individual standards for WJ-1, WJ-2, WJ-3, and WJ-4. I am currently re-vising the ISO 8501-4 standard on Waterjetting (Hydroblasting). Originally I had thought that contractors would use the WJ for maintenance as they did the dry abrasive blast cleaning. Blast a section in the morning and evening, paint in the later afternoon. However, in SY with WJ, the tendency has been to clean with WJ large sections for days. Watch of the intermediate “flash rust”- which was supposed to be a term applied to the rust which was formed as the water was drying, to see that it will comply with “none”, “light”, “Moderate”, or “heavy.” Keep a close view for patched which look like a corrosion cell. If the substrate develops a relatively uniform layer of loosely adherent flash rust (i.e. moderate to heavy), then in the morning, use a pressure washer to remove the loose clean rust dust. Let it dry. The loose material will be gone; the substrate likely will be discolored (darker than original). Then apply paint. Email me directly and I will give you direct contact with International Paint, Hempel, and PPG men who know and understand WJ and the process.
Committee seldom write “process documents” which is what you are asking about. ON flashrust.org or waterjetting.org, I have placed an extensive excel sheet for costs and estimating. It was prepared some years ago by the Federal Highway Research Administration for bridges, but it is very general. It is good for waterjet, dry blast, wet abrasive blast, power tool, hand tool, and electrostripping methods.