When modifying steam piping, which code must the design comply with?

When modifying steam piping, which code must the design comply with?

• A. ASME B31.1
• B. API 650
• C. ASME B31.3
• D. ASME Section VIII

Answer: (C)

Designing and modifying steam piping is governed by the piping code that covers process piping systems. ASME B31.3, Process Piping, sets the requirements for design, materials, fabrication, examination, testing, and inspection of piping that carries process fluids under pressure, including steam, in facilities like chemical plants and refineries. The code ensures safe operation after any modification by addressing pressure, temperature, allowable stresses, welding, and inspection criteria. ASME B31.1, Power Piping, applies mainly to piping in power generation and similar high-energy systems, which is why it’s not the standard used for general process steam piping. API 650 pertains to welded steel tanks for storage of liquids, not piping. ASME Section VIII covers pressure vessels, not piping.

Designing and modifying steam piping is governed by the piping code that covers process piping systems. ASME B31.3, Process Piping, sets the requirements for design, materials, fabrication, examination, testing, and inspection of piping that carries process fluids under pressure, including steam, in facilities like chemical plants and refineries. The code ensures safe operation after any modification by addressing pressure, temperature, allowable stresses, welding, and inspection criteria.

ASME B31.1, Power Piping, applies mainly to piping in power generation and similar high-energy systems, which is why it’s not the standard used for general process steam piping. API 650 pertains to welded steel tanks for storage of liquids, not piping. ASME Section VIII covers pressure vessels, not piping.