Pressure tests for organic coating process piping are required to ensure system integrity and prevent leaks, which could lead to fire or explosion hazards. The minimum required duration for these pressure tests is 1 hour.
Reference to Fire Inspector Documentation:
1. 2021 International Fire Code (IFC) - Section 1504.6.3 (Pressure Testing for Organic Coating Process Piping) IFC 1504.6.3 mandates that all process piping associated with organic coating operations must undergo a pressure test for at least 1 hour. This ensures that the pipes can handle operational pressures without failure.
2. NFPA 33 - Standard for Spray Application Using Flammable or Combustible Materials (2021 Edition) NFPA 33, Section 14.2.6 confirms that process piping must be pressure-tested for no less than 1 hour to verify its safety and reliability.
Detailed Explanation of Answer Choices:
Option A (Incorrect): 30 minutes is insufficient for proper pressure testing.
Option B (Incorrect): 45 minutes is still below the 1-hour minimum requirement.
Option C (Correct): 1 hour is the correct minimum test duration as required by IFC 1504.6.3 and NFPA 33.
Option D (Incorrect): 2 hours is longer than required, but the minimum requirement is 1 hour.
Thus, the correct and verified answer is: C. 1 hour.