What insulation must be provided for ammonia piping operating at temperatures less than 60 degrees F or more than 105 degrees F?

The requirement for insulation on ammonia piping that operates at temperatures less than 60 degrees Fahrenheit or more than 105 degrees Fahrenheit is grounded in safety and system efficiency considerations. Insulation in these cases is necessary to prevent heat loss or gain, which can lead to inefficient operation of the system and potential safety hazards.

Using 1 inch of insulation helps to maintain temperature control in piping systems, ensuring that ammonia can be transported efficiently without significant heat transfer to or from the ambient environment. Proper insulation effectively reduces the risk of condensation forming on the piping, which could lead to corrosion or other damage.

Additionally, it assists in minimizing the risk of ammonia vapor release, which is crucial considering ammonia's hazardous nature. In high-pressure piping systems, such specifications are vital to maintain the integrity of the system and ensure compliance with safety regulations.

Insulation thickness requirements often correspond to specific operational temperature ranges, and in this case, 1 inch is deemed sufficient to protect against the challenges posed by the temperature extremes indicated in the question.