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Considering the application context of mixing multiple materials in reactor pipelines mentioned earlier, the following are recommended multimetal-compatible corrosion inhibitors suitable for nuclear applications: 1. Vikleer series of multimetal-compatible corrosion inhibitors – Suitable for metals such as steel, copper, aluminum, and low-alloy steel, which are commonly used in reactors. Key advantage: It can form a dense protective film on metal surfaces, is environmentally friendly and safe; some models can meet the anti-corrosion requirements of industrial equipment and nuclear applications. Application scenarios: Uniform anti-corrosion treatment for all materials in reactor-related equipment and pipelines, eliminating the need to replace chemicals on a per-system basis. II. SGR-0405 Multi-functional Acid Cleaning Corrosion Inhibitor: Suitable materials – it provides excellent corrosion inhibition effects on stainless steel, carbon steel, copper, aluminum, and aluminum alloys. Key advantages: high corrosion inhibition efficiency, stable properties with no tendency to separate, suitable for high-temperature operating conditions of 60°C–90°C, and certified by the China Industrial Cleaning Association. Application scenario: Synchronous protection of multiple metals during the pickling and descaling process in reactor systems, to prevent differential corrosion among different materials. III. CM-911 Solid Multi-Purpose Acid Cleaning Inhibitor. Compatible materials: suitable for carbon steel, stainless steel, copper, aluminum, and various other metals as well as their combinations. Key advantages: It is a white solid powder that dissolves easily; the required concentration is only 0.1%. It is non-toxic and odorless, and it can prevent hydrogen embrittlement as well as local corrosion caused by Fe3+. Application scenarios: Chemical cleaning and corrosion protection for multi-material composite equipment such as reactor boilers, coolers, and pipelines. IV. Composite silicate corrosion inhibitors: Suitable materials – can protect various metals and alloys such as steel, copper, aluminum, and zinc. Core advantage: It uses modified sodium silicate as its main component; it is non-toxic and inexpensive, and suitable for the neutral water environment in nuclear power plant emergency cooling systems. Application scenarios: Long-term corrosion inhibition protection for reactor auxiliary circulating water systems, suitable for pipelines made of various materials. V. Alkylamine-molybdate-BTA composite corrosion inhibitor: Suitable materials – It can achieve a corrosion inhibition efficiency of over 99% for carbon steel, copper alloys, and zinc. Core advantage: The formula components work well together without any antagonistic effects between them, allowing for stable film formation in a neutral to slightly alkaline aqueous environment. Application scenario: Synchronous anti-corrosion of multiple metals in the reactor closed-loop cooling system, to prevent interference between protective films of different materials.