Stenciled pipe identification shall not be painted over, concealed, or removed prior to approval by the AHJ. Which statement reflects that requirement?

• A. Stenciled markings may be painted over if needed
• B. Stenciled pipe identification shall not be painted over, concealed, or removed prior to approval
• C. Stenciled identification may be concealed after installation
• D. Stenciled markings should be replaced annually

Answer: (B)

Maintaining visibility of pipe identification markings is essential for safety, maintenance, and emergency response. These stenciled markings tell exactly what the pipe contains and its purpose, so removing, painting over, or concealing them before the Authority Having Jurisdiction reviews and approves any change would hide critical information and could lead to misidentification or unsafe actions. That’s why the rule states that stenciled pipe identification shall not be painted over, concealed, or removed prior to AHJ approval. The other options propose altering or concealing markings without approval or making a routine replacement, which would violate the required process.