Analysis of Temporary Construction Infrastructure (PBS) in the Construction of Nuclear Power Plants. International Experience, Regulatory Framework, and Economic Aspects

The construction of nuclear power plants (NPPs) represents one of the most complex and capital-intensive tasks in modern engineering. The successful implementation of such projects depends on many factors, among which a key role is played by a carefully planned and efficiently managed Production-Construction Base (PCB), also known as temporary construction infrastructure (Eng. "Temporary Construction Infrastructure", Construction Support Base or Site Establishment and Support Infrastructure). The PCB is not merely a set of temporary facilities and utilities, but a comprehensive, engineered system designed to provide thorough support for all stages of construction and installation works, from the preparatory period to the commissioning of power blocks.

The critical importance of the PCB is underscored in international guidelines, such as the IAEA NP-T-2.5 "Technologies for Construction of Nuclear Power Plants" (Eng. "Construction Technologies for Nuclear Power Plants") ¹, where it is noted that the construction phase is one of the most responsible for the success of the project, and effective site management, including its infrastructure, – a key factor. The scale and complexity of modern NPPs, often built using advanced technologies, such as modular construction ¹, place increased requirements on the PCB.