2020 July is the submission date for tender document of the new boiler test facility on Zongming island Tender result will be known ?? months later. Contract to be signed thereafter, this will be around end of 2020. Contract duration stipulated is 38 months, so the project will be handed over to JNCX shipyard at end of 2023 or early 2024.
After hand-over, there will be pilot test runs of equipment intended for familiarization by the engineers and technicians from JNCX shipyard. By the time the facility is ready to go for real thing, it is already middle of 2024.
So this facility seem more likely is built for aircraft carrier 004 instead of 003. 003 is expected to be launched middle of next year (2021), complete its outfitting in 2022, and sea trial by 2023 and enter PLAN service at end 2023 or early 2024.
So the timeline does not match.
If 004 commence steel cutting this year, in 2 years time it will be in dry dock for assembly of hull modules ( year 2023/2024), it will get its boiler tests completed in time for installation, before 004's hull housing power plant is sealed and join with other hull modules. Thus more likely this facility is for CV004.
Whether 003 is or is not nuclear powered is another matter. 003 is expecting to have its power plant hull module seal and join with other hull modules before end of this year.