Finally, a press release from China's NNSA out just a few minutes ago re: Taishan.

Link [Chinese]:

mee.gov.cn/ywdt/zbft/2021…

My (as usual) quick and dirty translation here:

pastebin.com/YVASuXQ6

Commentary on main points to follow.
Point 1:
There are 5 damaged fuel rods in the Taishan Unit 1 core, in accordance with EDF statement yesterday and general commentary/predictions from nuclear industry tweeps. Well below design basis for continued operations of the reactor, so no shutdown expected.
Point 2:
An increase in radioactivity in the primary loop is indeed very different from a release outside of the plant. As long as that is the case, this is an operations issue for plant personnel, not a public safety concern.
Point 3:
NNSA denies CNN's allegation (via of as-yet unseen Framatome memo) that the "off-site dose limits" have been doubled. They state the doubling for the radioactivity level of inert gas used in plant chemistry procedures in the primary loop.
(Point 3 continued)
These are indeed two very different things. Impossible if failure of communication is from Framatome, the person who leaked the memo to CNN, the CNN reporting itself, or something else.

If true, it's a very serious thing to have gotten wrong.
Final Point:
This press release is good, but should have come yesterday. EDF statements yesterday left us lamenting the industry's generally woeful lack of PR savvy. NNSA making a good and strong statement after allowing 24+ hours of speculation is only a slight improvement IMO.
*Impossible to know* dammit.
I should have said: "they approved a doubling of the allowable specific activity level of inert gas in the plant chemistry procedures"

Too eager to get this published, need to proofread more 🙄
Also CC: @LindsayPB

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with David Fishman

David Fishman Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @pretentiouswhat

14 Jun
A few thoughts:

1)
Taishan is a Chinese plant built with French technology with a large French equity stake and Framatome is a French MNC offering technical services everywhere around the world (including the USA).
2)
Taishan is owned by CGN, which is on the US Entity List. Thus it would normally be forbidden to transfer US-derived technical information or data to CGN. A waiver may be obtained, however, for reasons of "operational safety", which is what Framatome is applying for.
3)
They're likely applying because either A. the information they are preparing to transfer originated in the US, or B. they don't want to impact their business in the US by doing work with CGN without full transparency. Probably both actually.
Read 11 tweets
29 Dec 20
Nice article in Caixin Global today about Chinese power rationing. It's paywalled, so I will summarize the key points for the curious with notes in parentheses. (1/15 thread).

caixinglobal.com/2020-12-28/cov…
2
Power rationing was implemented in several provinces in China from mid-December. Affected provinces included Hunan (esp. Changsha) and Zhejiang (esp. Yiwu). (Jiangxi is not mentioned but should be true there too according to other reports, with conditions similar to Hunan).
3
Article first cites overall high consumption as part of post-covid industrial stimulus plan. November 2020 power consumption was up 9.4% YoY and 2.5% YoY overall.

(Does not mention their own reporting from earlier this year about artificial electricity consumption in ZJ).
Read 16 tweets
22 Dec 20
China's Ultra-High Voltage Lines - Thread

1/14

China is building the world's most advanced UHV grid right now.

UHV lines are good for carrying power over long distances. The high voltage level reduces line loss. But they are very expensive to build.

China's UHVDC Network now:
2/14
In the rest of the world, UHV lines have generally been used sparingly. Submarine power cables (e.g. connecting UK to mainland Europe) and some huge hydropower projects in Quebec are some notable exceptions.

China is building UHV lines on a scale never seen before.
3/14
So why is China different? Geography plays a huge role. China's load centers are in the coastal East and South, while the best wind, solar, and hydro resources are in the North, Northwest, and Southwest. Power (esp. RE) is being generated far from where it's needed most.
Read 16 tweets
18 Aug 20
China Power Sector For Dummies- Part 1: Grids and Dispatch - Getting Smarter

1/10
First, Chinese doesn't have a national grid, at least not in the way that small countries do. There are 6 regional grids (N, NE, NW, E, C, S). State Grid runs 5 of them and Southern Grid runs 1.
2/10
These grids are somewhat interconnected with Ultra High Voltage (UHV) lines. UHV DC lines are used for long-distance connections and UHV AC lines for shorter distances. So power can be moved around the country, but at a cost, and lines have load limits.
3/10
The overall balance of China's power sector is indeed of oversupply, but this is not true on a regional basis. The East and South grids specifically have very tight local supply and are net importers of power from other grids. Meanwhile the NW and NE grids have a huge glut.
Read 10 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!

:(