What environmental factors affect ALRE equipment performance?

• A. Temperature, humidity, salt spray, corrosion, dust
• B. Only temperature
• C. Only humidity and dust
• D. Magnetic fields and radio interference

Answer: (A)

Environmental exposure can change how ALRE equipment performs by altering lubrication, material properties, and protective barriers, and by introducing corrosive or abrasive conditions. Temperature affects lubricant viscosity, seal flexibility, and thermal expansion of components, which can change clearances and operation. Humidity brings moisture that can promote electrical leakage, insulation degradation, and corrosion of metal parts. Salt spray is especially harmful in naval environments, accelerating corrosion of exposed metal and contacts. Dust acts as an abrasive, plugging filters, gumming moving parts, and increasing wear. Corrosion itself reduces strength and reliability of structural and fastened joints, often accelerated by humidity and salt spray. When these factors combine, performance and reliability can decline more than with any single factor. Other options either ignore several of these influential factors or focus on electromagnetic effects, which, while important in some systems, do not capture the broad environmental influences covered here.