High Temperature Hydrogen Attack
High Temperature Hydrogen Attack
(OP)
Here is a report that was recently issued concerning the Fatal Accident at Tesoro Anacortes Refinery, located in the State of Washington.
Interesting reading;
http ://www.tso corp.com/s tellent/gr oups/corpc omm/docume nts/gt_con tribution/ 001347.pdf
Interesting reading;
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RE: High Temperature Hydrogen Attack
RE: High Temperature Hydrogen Attack
A star for you.
Ron Volmershausen
Brunkerville Engineering
Newcastle Australia
http://www.aussieweb.com.au/email.aspx?id=1194181
RE: High Temperature Hydrogen Attack
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"It's better to die standing than live your whole life on the knees" by Peter Mayle in his book A Good Year
RE: High Temperature Hydrogen Attack
RE: High Temperature Hydrogen Attack
About the time of the original design there was concern about the Nelson curve for C: 1/2 Mo, Amoco and Exxon (Cuifredda must have gotten samples from half of their vessels) found attack in the "safe" zone. Although much later , it seems the Shell review (1999 ?) concentrated on C: 1/2 Mo, and didn't give the carbon steel enough attention.
Attack always starts in the HAZ (regardless of PWHT) and if you have to check a lot of area, macro etching (hot HCl) brings it out.
RE: High Temperature Hydrogen Attack
RE: High Temperature Hydrogen Attack
Talking point;
One thing that about the failure is the amount of distortion of
the shell. All the failures from HTHA I've seen had very little
distortion at the failure size, The only failure that unzipped
the vessel along the welds and HAZ was one that was caused
by an internal explosion. HTHA was confirmed a long the
fracture surface.
blacksmith37,
I'm sure that Shell took HTHA as a possibility based on the
1950/1954 "Shell Corrosion Data Survey" by Nelson, "The Red
Book" which had some curves on the potential for H2 damage
in several steels. My boss at the time almost paranoid about
H2. He was always on the phone with someone at Shell
Development. I assume this was Nelson at Shell. Our site had
two H2 plants and 3 processes that used H2 with 2 of them
skirting the potential fro H2 damage.
http://
html?id=u-1WAAAAMAAJ
RE: High Temperature Hydrogen Attack
Why is this a seperate report issued by an authority that is NOT the CSB ? The CSB has been investigating this accident for over a year.
It seems that the CSB has issued other reports on refinery accidents involving materials selection and applications errors.
Why is this one different ?
http
-MJC
RE: High Temperature Hydrogen Attack
RE: High Temperature Hydrogen Attack
When I met George Nelson ( about 1967), my impression is that he was retired ,or nearly retired (and making a social call on Dr Sammans at Amoco). My thoughts are many experienced people from Shell Westhollow were retired by 1999 (Tuttle, Treaseder,Kochera, and Mack-in Hague); so how expert of a review did it get ?
RE: High Temperature Hydrogen Attack
Long delays, yes......but, I do not believe that we will see any more accident reports coming from www.csb.gov
You can count on the CSB, the FDA, FEMA and several other useful and important government agencies to be pushed into oblivian when the next group of Republicans sweep into congress in 2012.
Is the federal government wasteful....yes.
Lets just see where the cuts will take place
RE: High Temperature Hydrogen Attack
I remember a "guberment" official giving a speech to welcome himself to the ASTM A1 committee. It had about 300 active members so there were a few new faces at each meeting, but that is the only such speech I heard.
RE: High Temperature Hydrogen Attack