Reinforcement is ongoing for the Accelerator to Target (A2T) topping screed, which is to be cast next week (262 m3 of concrete). The second part of the Neutron Shielding Wall in the 'Drift to Target' (D2T) has been cast in heavy concrete. More corner shielding is due to be cast in A2T/D2T. Superstructure erection continues on the high bay - with a total of nine arches so far.
Since 'Mechanical, Electrical & Plumbing' (MEP) installations on site started in 2015, 10 buildings have been completed, with another two to be finished in December 2019 (two of the lab buildings). The extensive amount of installations completed in the buildings are clearly visible, however the work, time and effort that goes into System Acceptance Testing (SAT) is not so obvious. The testing and commissioning includes all mechanical and electrical systems, as well as interfaces with doors, locks, pump stations and oil separators installed by other parts of the project.
SAT2 tests are performed by the separate MEP Collaboration Partners, and135 will have completed by the end of 2019. These 135 are made up of lots of separate elements, so the actual number of tests is in excess of 7,000! These tests check that the installation of each system operates according to set requirements, and that they provide the power, heating, cooling, lighting, control, fire detection and protection, and security to provide the correct environment in each building.
SAT3 tests are coordinated by the SEC MEP Commissioning team, and, by the end of 2019, around 3 750 we will have completed! These tests check that all systems are working together to achieve the optimal environmental and safety conditions for the users. Testing of all the systems is an integral part of the handovers of the buildings - each test is a small step towards first science at ESS in 2023!