Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Cryoplant | A vertical displacement event

    Three vertical storage tanks have been installed since last week outside of the cryoplant. The operation requires two powerful cranes working in tandem but also [...]

    Read more

  • Science in Texas | ITER draws enthusiasm

    At its Annual Meeting in Austin, Texas, the American Association for the Advancement of Science, AAAS, invited participants to illustrate how investment in basi [...]

    Read more

  • Image of the week | In the belly of the (flying) whale

    On 15 February, 'Isabelle' and 'Jeanne,' the last of the ten toroidal field coils manufactured in France for the EU-Japan tokamak JT-60SA, were swallowed into t [...]

    Read more

  • Nuclear safety | "A pragmatic and creative approach"

    Safety is at the core of all nuclear activities. Over the past seven decades—since the first experimental reactor was brought to criticality in 1942—codes, stan [...]

    Read more

  • Intellectual property | Modernizing processes and practices

    'A wise man will always allow a fool to rob him of ideas without yelling 'Thief.' If he is wise, he has not been impoverished,' says Ben Hecht in A Child of the [...]

    Read more

Of Interest

See archived articles

Cargo, barge, monster trailer ... and an eyedropper

R.A.

Shipping three 120-tonne cryostat segments from India to the ITER site, some 9,000 kilometres distant, is a huge global operation involving a large cargo ship, a specially designed barge, tugs, three monster trailers, dozens of accompanying vehicles and—once the convoy reaches the ITER Itinerary—more than one hundred specialists.

The last three segments of the cryostat base were safely delivered to ITER at 2:30 a.m. on 20 October and unloaded the next afternoon. (Click to view larger version...)
The last three segments of the cryostat base were safely delivered to ITER at 2:30 a.m. on 20 October and unloaded the next afternoon.
Spectacular and challenging, the delivery of the ITER components is never routine. It is a job reserved for highly skilled professionals, including logisticians, mechanics, drivers, crane operators, and experts in safety and handling.

But once again, the door-to-door transport of an ITER component was accomplished successfully.

The last three segments for the cryostat base (tier 2), which had been loaded onto a cargo ship at Hazira, India, on 5 September, were safely delivered to ITER at 2:30 a.m. on 20 October and unloaded and stored the following afternoon.

In order to call the operation complete however, one last check was necessary. It didn't require large machinery or sophisticated tooling ... just a standard eyedropper filled with a solution of diluted silver nitrate (0.3%).

Are the small water puddles that have accumulated on the tarpaulin's surface saline or not? A few drops of diluted silver nitrate will instantly tell. From right to left: Alain Spatafora, the transport expert commissioned by the ITER Organization and DAHER, and cryostat engineers Guillaume Vitupier (ITER Organization) and Mitul Patel (ITER India). (Click to view larger version...)
Are the small water puddles that have accumulated on the tarpaulin's surface saline or not? A few drops of diluted silver nitrate will instantly tell. From right to left: Alain Spatafora, the transport expert commissioned by the ITER Organization and DAHER, and cryostat engineers Guillaume Vitupier (ITER Organization) and Mitul Patel (ITER India).
"In the presence of salt, silver nitrate reacts by forming white foam," explains Alain Spatafora, the transport expert commissioned by the ITER Organization and logistics provider DAHER. "And this is precisely what we need to know: are the small water puddles that have accumulated on the tarpaulin's surface saline or not?"

This can make an important difference. In the course of six-and-a-half weeks of travel the loads have seen their share of rough seas and heavy rains and—despite the best protection—some water has inevitably seeped into the folds and creases of the plastic tarpaulin.

"Rainwater is okay. But if we find that these puddles have a degree of salinity, we would need to wash away the salt in order to avoid corrosion."

On Thursday afternoon, Alain Spatafora did an average of 15 tests on each of the three wrapped segments and white foam failed to materialize. Using the same simple technique, further tests will be performed on the unwrapped components in the coming days.

In parallel, helium leak tests have begun on the first welds performed for tier 1 of the cryostat base; these will be complemented with X-ray radiography in the coming days.


return to the latest published articles