California ICC UST Inspector Practice Exam

Which of the following is NOT a requirement of ELD test methods?

1. Certified by third party

2. Capable of detecting a leak of 0.005 gallons per hour

3. Probability of detection of at least 95% and false alarm of 5%

4. Has false safe capability

The correct answer is: Has false safe capability

The requirement that is not part of the ELD (Electronic Leak Detection) test methods is the presence of false safe capability. While ELD methods aim to have a high probability of detecting actual leaks while minimizing false alarms, the specific requirement of having a false safe capability is not standardized or universally mandated for all ELD testing methods. The first option emphasizes the importance of certification by a third party, which ensures the testing method meets specific regulatory and safety standards. This certification is crucial in maintaining credibility and reliability in leak detection. The second point about detecting a leak of 0.005 gallons per hour refers to the sensitivity that ELD methods must achieve. The ability to detect such small leaks is essential for environmental protection and compliance with safety regulations. The third item requires that the method maintain a probability of detection of at least 95% while limiting false alarms to 5%. This balance is critical for operational effectiveness, as a high detection rate ensures that leaks are identified, while keeping false alarms low minimizes unnecessary disruptions and costs. In contrast, the concept of "false safe capability" is not universally required. While it can enhance system reliability, it does not hold the same regulatory weight as the other outlined requirements for ELD testing methods. This makes it the