Radioactive waste management

​​
Radioactive waste resulted from previous operations and decommissioning activities, is stored in the three interim storage facilities located within the site. Upon completion of the waste shipment to the National Repository, all interim storage facilities will be dismantled.

At the end of 2020, the volume of radioactive waste, classified according to the Decree of 7 August 2015, in the plant of Trino amounts to 1,275 cubic metres. The volume may vary based on the year, the continuation of safe maintenance and decommissioning activities and the conditioning techniques for previous waste.
​​

Amount (in cubic metres) of radioactive waste, divided by type, located in Trino NPP on 31/12/2020

Amount (in cubic metres) of radioactive waste, divided by type, located in Trino plant on 31/12/2017

Short-lived substances Very Low Level Waste Low Level Waste Intermediate Level Waste High Level Waste

0 989 221 65 0
Total 1,275
​​
In 2013, super-compaction activities were implemented on the previous waste stored in 220-litres steel tanks (containing asbestos).

In 2016, repackaging activities of previous waste stored in various kinds of tanks (called “matrioske”) were completed.

The waste that has already been conditioned and the waste which will be later treated and conditioned, are stored in two interim storage facilities and in a temporary buffer (Test Tank). The latter contains the radioactive waste previously stored in the interim storage facility D2, which needs to be adapted to new safety standards. The Test Tank hosts 300 overpacks, resulted from the super-compaction of about 1,500 tanks containing low activity previous waste.

Interim storage facility n. 1 of low-level solid waste:
  • Volume of the storage area: 6,500 cubic metres
  • Maximum storage capacity: 3,800 cubic metres
  • Amount of stored waste: 686 cubic metres
  • Surface: 1,000 square metres
  • Type of stored waste: Low Level / Intermediate level waste

Repository n. 2 of low-level solid waste:
  • Volume of the storage area: 4.320 cubic metres
  • Maximum storage capacity: 2,000 cubic metres
  • Amount of stored waste: 298 cubic metres
  • Surface: 779 square metres
  • Type of stored waste: Low Level waste

Temporary Buffer Repository (Test Tank):
  • Volume of the storage area: 913 cubic metres
  • Maximum storage capacity: 765 cubic metres
  • Amount of stored waste: 127 cubic metres
  • Surface: 88 squaremetres
  • Type of stored waste: Low Level waste

Recovery of materials from the dismantling operations Part of the materials resulted from the dismantling of Reactor Building, Auxiliary Building and Radioactive Effluents’ Treatment Facility are conventional waste; this type of waste undergoes radiological tests and, after being proved releasable, it is removed from the site to be recovered and recycled. This waste includes, for example, ferrous materials (pipes, valves, components and dismantled electromechanical devices) and concrete, materials that are later reused for other productive cycles, thus reducing the waste produced by decommissioning.