What is a common method to verify the integrity of a gamma radiography source?

Conducting regular performance checks is essential for verifying the integrity of a gamma radiography source. These checks ensure that the source is functioning properly and that it remains within the specified performance parameters. This practice is crucial for maintaining safety standards, as it helps detect any potential issues such as degradation or malfunction of the source that could affect its effectiveness and safety during radiographic operations.

Regular performance checks typically involve examining the source for physical damage, measuring its activity level, and ensuring that the shielding and other safety components are intact. This proactive approach is vital for both the operator's safety and the quality of the radiographic inspection being performed.

In contrast, the other options do not provide an effective means of assessing the integrity of the gamma radiography source. Storing it in a larger container does not contribute to performance verification; utilizing it only at night is irrelevant to its integrity, and cleaning it with chemical solutions could potentially damage the source or its protective components. Thus, regular performance checks stand out as the best practice for ensuring the reliability and safety of gamma radiography sources.