Rhode Island Journeyman Plumber Practice Exam

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What is the maximum allowed PSI for testing mentioned in the guidelines?

3 PSI
5 PSI
10 PSI
15 PSI

The correct answer is: 5 PSI

The maximum allowed PSI for testing in plumbing guidelines is specified as 5 PSI. This value is critical as it ensures that the testing process effectively checks the integrity of the plumbing system without risking damage to the pipes or fittings. A lower pressure threshold like 3 PSI may not provide a comprehensive test for potential leaks, while pressure settings of 10 PSI or 15 PSI could impose excessive stress on the plumbing system components, leading to failures or inaccuracies during the testing process. Therefore, 5 PSI strikes a balance between ensuring thorough testing while maintaining the safety and integrity of plumbing installations. This standard is significant for journeyman plumbers to know, as adhering to prescribed testing pressures is essential for code compliance and successful project execution.