According to the weepage tolerance in NSTM 233, how is weepage at gaskets treated?

• A. Slight weepage is acceptable at gaskets
• B. No weepage allowed at any location
• C. Weepage must be eliminated immediately
• D. Weepage is allowed only during shutdowns

Answer: (A)

Weepage tolerance at gasket seals recognizes that small leakage through packing glands can occur during normal operation. A little seepage isn’t a sign of immediate failure; it often indicates the seal is properly seated and functioning without being over-tightened, and it helps prevent dry running of the packing. The standard allows this minimal, controllable leakage rather than demanding perfect zero leakage at all times, which would be impractical in many systems. If the leakage becomes more than slight, or increases, or appears at additional locations, maintenance should address the packing or gasket seating to restore the seal. So the best choice reflects that slight weepage is considered acceptable at gaskets.