What the Radioactive Yellow-II Label Means for U.S. Shipments

Radioactive Yellow-II Label A dangerous-goods transport label used for the hazard or handling requirement represented by 'Radioactive Yellow-II Label', subject to applicable regulations. This label identifies packages of Class 7 (radioactive) material that meet the specific surface and distance dose-rate criteria for the Yellow-II category under applicable national and international rules.

The label does more than warn — it communicates measured dose-rate limits, a transport index when required, and handling expectations to carriers, freight handlers, emergency responders, and receiving facilities. In the United States the label design and application follow the Hazardous Materials Regulations (HMR, Title 49 CFR) and harmonised international requirements from the IAEA's Regulations for the Safe Transport of Radioactive Material. For shippers and warehouse operators this means the Yellow-II label is a regulatory control point: incorrect classification or mislabeling can trigger shipment refusals, fines, or unsafe handling.

What The Label Looks Like And What It Shows

The standard Yellow-II label uses the international trefoil symbol with a two-panel background (white over yellow) and must include: the radiation trefoil, the word RADIOACTIVE, the category marking "II", and where required a transport index (TI) and the activity or activity range. The label must be durable, legible, and affixed to the package so it remains readable during normal transport conditions.

• Label Appearance: Trefoil symbol with upper white panel and lower yellow panel; the category "II" printed on the yellow field.
• Information Items: RADIOACTIVE text; transport index when applicable; other markings or UN numbers as required by the shipment's classification.

Why The Yellow-II Category Matters

Yellow-II indicates a mid-level external radiation level at the package surface and at 1 metre from the package relative to Yellow-I and Yellow-III categories. That categorization drives handling controls: segregation from the public and foodstuffs, placarding requirements for vehicle loading, limits on stowage and exposure for vehicle crew, and emergency response instructions. Carriers and receiving facilities use the label to implement routine safety actions such as limiting personnel time near a package, posting temporary controls at a dock, or routing a shipment to trained handlers.

How Classification And Measurement Work

Classification to Yellow-II depends on measured dose rates at the package surface and at one metre under defined conditions (the shipper measures using calibrated survey instruments and documented procedures). Many regulations also require calculation and marking of a transport index (TI) that quantifies radiological control at one metre and is used for segregation and loading plans. Shippers must keep records of measurements, calibration certificates, and calculations in the shipping papers.

• Measurement Records: Calibrated survey meter readings at surface and 1 m, recorded on shipping paperwork.
• Transport Index: Numeric TI (when required) written on the label and on the shipping papers to support loading decisions.

Who Must Apply The Label And Who Enforces It

Shippers are responsible for correct classification, labeling, and documentation. Carriers must inspect packages before acceptance and may refuse shipments that are improperly labeled or documented. Regulators that enforce the rules in the U.S. include the Department of Transportation (PHMSA) for transport packaging and communications, and the Nuclear Regulatory Commission (or state radiation control programs) for licensing and radiation safety where applicable. Emergency responders rely on the marking and label information to choose protective actions.

Practical Example

A medical isotope supplier preparing a sealed-source package measures surface and one-metre dose rates and determines the package falls into the Yellow-II range. The shipper affixes a durable Yellow-II label displaying RADIOACTIVE and the category marking, prints the calculated transport index on the label, includes the appropriate UN number and emergency telephone number on the shipping papers, and ensures the carrier's acceptance checklist is complete. On arrival the receiving facility uses the TI and package label to route the package to a shielded receiving bay and limits staff time during unloading.

Tips For Shippers And Warehouse Teams

• Training: Ensure staff who classify, survey, and prepare radioactive shipments have current training and documented procedures under 49 CFR and facility licensing requirements.
• Instrumentation: Maintain calibrated survey meters and retain calibration certificates with shipping records.
• Label Quality: Use durable, weather-resistant labels positioned on the package where they won't be obscured during handling.
• Documentation: Always include the TI and emergency contact on shipping papers; keep copies in the shipper's files.

In short, the Radioactive Yellow-II Label marks packages that meet intermediate external dose-rate criteria and carries regulatory implications for measurement, handling, and documentation. Correct application protects handlers, carriers, and the public while keeping shipments compliant with U.S. and international transport rules.