IEEE N42.17B-1989

N42.17B-1989 is an American National Standard that addresses performance specifications for health physics instrumentation used in occupational airborne radioactivity monitoring. In the context of nuclear engineering, it helps define how monitoring equipment should respond when measuring radioactive airborne contamination in workplace settings. This matters for facilities that rely on consistent detection and evaluation of airborne radioactivity, where instrument performance can affect safety decisions, operational control, and confidence in compliance-related measurements.

Overview of N42.17B-1989

This standard provides a technical framework for occupational airborne radioactivity monitoring instrumentation, with emphasis on performance specifications rather than general guidance. N42.17B-1989 is relevant to health physics practice because it supports the selection, evaluation, and expected behavior of instruments used to monitor airborne radioactive material in controlled environments. Its focus is on measurable performance characteristics that help users compare equipment and verify that instrumentation is suitable for the intended monitoring task.

Typical use cases

N42.17B-1989 is commonly used where airborne radioactivity must be monitored as part of radiation protection programs in nuclear facilities and related controlled work areas. It may inform the purchase, testing, or qualification of instruments used for continuous area monitoring, workplace surveillance, or checking ventilation and containment performance. The standard is also useful when defining acceptance criteria for health physics instrumentation that supports routine monitoring of airborne radionuclides during operations, maintenance, or decommissioning activities.

Why it matters

For organizations handling radioactive materials, consistent instrumentation performance is essential for reliable monitoring and decision-making. N42.17B-1989 helps reduce uncertainty by establishing a shared basis for performance expectations, which supports procurement, calibration planning, and testing practices. It can also improve comparability between instruments and help ensure that airborne radioactivity monitoring programs are implemented with greater control and consistency. In practice, that supports safer operations and more defensible radiation protection records.

• Health physics instrumentation requirements
• Occupational airborne radioactivity monitoring
• Performance evaluation and acceptance criteria
• Radiation protection support in nuclear engineering
• Instrument selection and comparison