Saturday, July 14, 2012

Hardened vents and filtered vents: July report soon?

On February 27, 2012, NRC Chairman Jaczko issued the following:

http://pbadupws.nrc.gov/docs/ML1206/ML120610153.pdf

In the fourth paragraph on page 2 of 3 of the above reference we read "... important that the Commission make a decision on the topic of filtered vents this summer ... ."

Now that the NRC has a new Chairman, it is likely that the Jaczko-inspired focus on filtered vents will "go away."
A policy paper from the staff was expected from the staff in July 2012 according to the above document.

And here is a notice of a meeting of July 12, 2012 that I missed:

http://pbadupws.nrc.gov/docs/ML1218/ML12180A009.pdf

Here are slides from the July 12, 2012, meeting.  Fretz of NRC e-mailed these July 24, 2012:

http://pbadupws.nrc.gov/docs/ML1220/ML12206A263.pdf
http://pbadupws.nrc.gov/docs/ML1220/ML12206A266.pdf

And here is the order for hardened vents. March 12, 2012:

http://pbadupws.nrc.gov/docs/ML1205/ML12054A694.pdf

And here is the ACRS Fukushima subcommittee meeting of May 22, 2012:

http://pbadupws.nrc.gov/docs/ML1218/ML121850039.pdf

From page 117 of 292:

MR. LEYSE:  Yes, this is Bob Leyse and I'll be damned brief because I have said this before.
          In terms of a holistic approach, the 2200 degree Fahrenheit criterion that all plants are licensed under, for example, Palo Verde, the Baker-Just equation is based on specimens, zircaloy specimens, that you can handle, walk around in your pocket as pocket change.
          In contrast to that, NRC is funding a huge program at Sandia in which bundles of fuel rods, 49-rod bundles, and earlier I guess, some BWR bundles, are tested in air only.  For a fraction of the cost of that stuff, you could do the kind of tests that would show in terms of U. S. data that the 2200-Fahrenheit limit is too high.
          End of comment.

Following is a page that I have likely posted earlier. 

No comments: