The latest pictures appear to show that workers have used booms to set up a perimeter in the waters of the Mantua Creek to contain any chemical spill.
More top news
ITV News Europe Editor Emma Murphy said Putin's team have pointedly claimed the Skripal poisoning crisis has boosted his victory.
Largely dry elsewhere tonight with a widespread frost and icy stretches
The so-called mini-Beast from the East has swept in, bringing with it snow, ice and strong winds.