近年来，为有效降低机组辐射剂量和辐射源项，秦山核电积极探索新技术、新装备、新工艺，加强科技成果转化推广，开展了以一回路加锌技术为代表的一系列重大科研项目。在国内尚无在运机组加锌运行先例的背景下，秦山核电不畏挑战、敢为人先，于2019年底正式启动项目科研，抽调化学、堆芯燃料、技术、保健物理、运行、维修等领域专业人员成立项目组，开启研究与应用的探索之路。

一回路加锌技术需要开展设备材料适用性及对系统运行影响等多方面的论证工作，涉及专业广泛、技术要求高、实施难度大。自项目实施以来，公司各部门密切配合、协同攻坚，深入开展技术研究和评估论证。历经近60个月的努力，团队完成了一回路加锌技术的研究、试验、安全评审、现场变更和实施条件准备等关键节点工作，并在方家山1号机组上成功实施应用，实现了国内在运核电机组一回路加锌技术“零的突破”。

In recent years, in order to effectively reduce the radiation dose and radiation source items of the unit, Qinshan Nuclear Power Plant has actively explored new technologies, new equipment and new processes, strengthened the transformation and promotion of scientific and technological achievements, and carried out a series of major scientific research projects represented by primary circuit zinc technology. In the context of no precedent for zinc operation in the transport unit in China, Qinshan Nuclear Power Plant, undaunted by challenges and daring to be the first, officially launched project scientific research at the end of 2019, and deployed professionals in the fields of chemistry, core fuel, technology, health physics, operation, maintenance and other fields to set up project teams to open the road of exploration of research and application.

Primary zinc technology needs to carry out the applicability of equipment and materials and the impact on system operation and other aspects of the demonstration work, involving a wide range of professional, high technical requirements, implementation is difficult. Since the implementation of the project, all departments of the company have closely cooperated and coordinated to overcome difficulties, and carried out in-depth technical research and eva luation demonstration. After nearly 60 months of efforts, the team has completed the key node work of primary circuit zinc technology research, testing, safety review, site change and implementation conditions preparation, and successfully implemented the application on Fangjiashan Unit 1, achieving the "zero breakthrough" of primary circuit zinc technology for domestic nuclear power units in operation.