When should a charged cylinder be discarded and replaced based on its weight?

The correct approach to determining when a charged cylinder should be discarded and replaced based on its weight hinges on safety and operational standards. A cylinder is expected to maintain a minimum stamped weight to ensure it is functioning safely and effectively. When the cylinder weighs 2 grams less than the minimum stamped weight, this indicates that it may be approaching a critical threshold of safety and could potentially compromise performance.

The choice of 2 grams is significant as it reflects an established safety margin within industry practices, ensuring that the cylinder is still within an acceptable operational threshold. Maintaining adherence to these standards is crucial for the safety of personnel who may rely on the equipment in rescue operations. Thus, the insistence on checking the weight against the minimum stamped weight is indicative of a proactive approach to equipment management to mitigate risks and ensure readiness.

In contrast, other selections either do not meet the safety threshold or introduce a higher margin of risk, underscoring why they are not suitable for adherence in this context.