Reactor containment tested before fuel load at RNPP

The first unit of the Rooppur Nuclear Power Plant (RNPP) has successfully completed crucial integrity and strength tests of its reactor containment structure, a significant step forward as the plant prepares for nuclear fuel loading. This achievement at the Pakshey facility in Ishwardi confirms the unit’s adherence to stringent design specifications and the highest international safety standards.

According to a press release issued today, the comprehensive testing regimen involved increasing the internal pressure within the containment compartment to its design specifications using a specialized compressor. This process allowed engineers to conduct a series of tests to verify the structure’s tightness and its capacity to withstand internal loads that could arise under abnormal operating conditions.

The containment, a robust physical barrier of pre-stressed reinforced concrete with an internal sealing steel lining, serves as the final protective measure against the release of radioactive substances into the environment in the unlikely event of an emergency. It is also designed to localize any such substances internally and provide protection against external impacts. The successful completion of these tests is particularly vital as the plant moves closer to the introduction of nuclear fuel.

Following these successful tests, the RNPP unit is slated to undergo a series of “hot media tests.” These will involve heating the primary coolant circuit to its rated values and generating steam, allowing for the comprehensive assessment of various safety modes of operation. This includes testing the functionality of devices designed to discharge steam into the atmosphere. Plant officials emphasize that any accompanying noise during these tests is planned and poses no risk to the public.

Rosatom, the general contractor for the RNPP project through its Engineering Division, underscores that safety remains its paramount priority, with the project meticulously designed to meet all mandatory standards and requirements.

The Rooppur Nuclear Power Plant is equipped with two VVER-1200 reactors, boasting a combined capacity of 2400 MW. The project is being implemented with significant technical and financial assistance, highlighting a collaborative effort to bring nuclear energy to Bangladesh.