When people picture a nuclear power plant, they often think of the reactor and containment building. A less visible safety layer runs through everyday operations: the controlled use of chemicals for water chemistry, purification, decontamination, maintenance and waste treatment.

What are “nuclear chemicals”?

The term is a practical umbrella, not a single harmonised legal category. Many products are also used in ordinary industry: boric acid, lithium hydroxide, ammonia, cleaning agents, lubricants, ion-exchange resins and adsorbents. Nuclear applications may impose tighter purity, impurity, consistency, compatibility and traceability specifications.

Use in a nuclear facility does not automatically make a new chemical radioactive. However, after use in a controlled system or contaminated area, the material may present both chemical and radiological hazards. Risk depends on the substance, location, process condition and contamination status.

Why does chemistry affect plant safety?

In some pressurised-water reactor designs, boric acid is used in reactivity control and lithium hydroxide supports primary-water pH control. Secondary systems may use ammonia or other agents according to the plant chemistry programme. Concentration, impurity limits and compatibility influence corrosion and the transport of corrosion products.

Ion-exchange resins, adsorbents and precipitants support purification and liquid-waste treatment. Cleaning agents, lubricants, coatings and sealants used during maintenance must also meet approved specifications. Chloride, sulphate or other unwanted impurities can damage susceptible materials.

The difficult part is combined risk

A product may first present ordinary chemical hazards such as corrosivity, toxicity, flammability, oxidation or irritation. Heat, pressure and radiation may change material performance or promote degradation. In a radiological area, a spill may also spread contamination or create inhalation and internal-exposure concerns.

Protection is more than heavier clothing

Primary controls include closed transfer, ventilation, automatic dosing, leak detection, compatible storage and secondary containment. Procedures, permits, monitoring and training come next. Gloves, goggles, clothing and respiratory protection must be selected from the actual exposure assessment.

Ordinary protective clothing helps prevent chemical contact or radioactive contamination; it does not automatically shield penetrating radiation. Radiation protection still relies on time, distance, shielding, contamination control, dosimetry and authorised work controls.

How does the SDS support decisions?

Sections 2 and 3 identify hazards and composition; Sections 4 and 6 support first aid and spill planning; Sections 7 and 8 cover handling and exposure controls; Section 10 addresses incompatibility; and Sections 13 and 14 connect to disposal and transport. The SDS must be combined with purchase specifications, certificates of analysis, compatibility assessments, plant procedures and radiation-protection requirements.

Supplier checklist

Define the intended use and specification before purchase, verify batch certificates on receipt, confirm compatibility before use, reassess every change, and plan waste routes in advance. Product names, composition, labels, batch records and transport documents should remain consistent and traceable.

Official references

China National Energy Administration: Green Nuclear Energy public-information platform

IAEA: quality control of chemicals and other substances at nuclear power plants

Related services: Visit our SDS FAQs or contact us for SDS and GHS label support.

Disclaimer: This article is general information, not nuclear-operation, radiation-protection, occupational-health or legal advice. Follow applicable law, approved plant procedures, the actual SDS and competent professional assessments.