ASME STP-PT-066-2014 PDF

Full title and description

STP-PT-066-2014 — Design Guidelines for Corrosion, Erosion and Steam Oxidation of Boiler Tubes in Pulverized Coal‑Fired Boilers. This ASME technical publication provides design guidance to minimize fireside corrosion, particle‑impact erosion and steam‑side oxidation of boiler tubing and related components for large pulverized coal‑fired boilers, with emphasis on advanced supercritical and ultra‑supercritical steam conditions and on components such as superheater and reheater tubing.

Abstract

This document compiles recommended design approaches, materials considerations and mitigation strategies for degradation mechanisms that affect boiler tubing: fireside corrosion, ash‑particle impact erosion and steam‑side oxidation. It includes a part of design guidelines and a second part reviewing state‑of‑the‑art investigative methods, with practical commentary for applications including co‑firing of biomass or wastes and consideration of CO2 capture impacts on fireside chemistry.

General information

• Status: Active — placed on stabilized maintenance (ASME indicates the product remains in effect under stabilized maintenance).
• Publication date: 2014 (published March 26, 2014 in ASME product listings).
• Publisher: American Society of Mechanical Engineers (ASME).
• ICS / categories: Power and heat engineering / Boilers and combustion equipment (ICS sector 27 — relevant to boiler design and power‑plant heat‑engineering standards).
• Edition / version: STP‑PT‑066 — 2014 edition.
• Number of pages: 206 pages.

Scope

The standard provides guidance for designers, materials engineers and plant owners/operators on selecting materials, component geometries and protective measures to limit the effects of fireside corrosion, particle impact erosion and steam‑side oxidation in pulverized coal‑fired boiler tubing. It targets advanced steam conditions (supercritical and ultra‑supercritical), addresses tubing temperature ranges up to approximately 1350°F (≈730°C), and discusses implications of fuel changes (biomass co‑firing, wastes) and CO2 capture on corrosion and ash chemistry. The document combines prescriptive design guidance with a review of investigative and test methods.

Key topics and requirements

• Fireside corrosion mechanisms and mitigation strategies (materials selection, coatings, combustion control).
• Particle‑impact erosion: prediction, critical locations, and geometric or operational measures to reduce erosion.
• Steam‑side oxidation behavior at elevated metal temperatures and recommended alloy choices for superheater/reheater tubing.
• Design rules for tubing in advanced supercritical and ultra‑supercritical boilers (temperature limits, expected lifetimes, inspection intervals).
• Considerations for fuel changes (biomass co‑firing, waste fuels) and impacts on ash composition and corrosion/erosion performance.
• Recommended testing and investigative methods for evaluating corrosion, erosion and oxidation (part two of the publication).

Typical use and users

Used by boiler designers, power‑plant engineers, materials and corrosion specialists, equipment manufacturers, consultants and maintenance planners. Typical applications include new boiler design (supercritical/ultra‑supercritical units), retrofit assessments, failure investigations, lifecycle cost evaluations and specification of inspection and monitoring programs for high‑temperature tubing.

Related standards

Complementary documents include other ASME STP‑PT series reports on fossil‑fuel boiler components and metallurgy, ASME Boiler & Pressure Vessel Code sections relevant to materials and fabrication, and international/national standards covering boiler tube material specifications and testing (e.g., ASTM material specifications and national boiler design codes). Users commonly consult adjacent STP‑PT reports addressing high‑temperature materials and component behavior when applying this guidance.

Keywords

boiler tubes; fireside corrosion; particle‑impact erosion; steam‑side oxidation; pulverized coal‑fired boiler; superheater; reheater; supercritical; ultra‑supercritical; biomass co‑firing; CO2 capture; materials selection; inspection methods.

FAQ

Q: What is this standard?

A: It is an ASME technical publication (STP‑PT‑066, 2014) titled "Design Guidelines for Corrosion, Erosion and Steam Oxidation of Boiler Tubes in Pulverized Coal‑Fired Boilers" that compiles design guidance and investigative‑method reviews for tube degradation mechanisms.

Q: What does it cover?

A: The publication covers fireside corrosion, ash particle impact erosion and steam‑side oxidation of boiler tubing; material and design recommendations for superheater and reheater tubing at elevated metal temperatures (up to ~1350°F / 730°C); testing and investigative methods; and practical considerations for fuel changes and CO2 capture effects.

Q: Who typically uses it?

A: Boiler designers, plant engineers, materials/corrosion specialists, equipment vendors and maintenance/inspection teams use the guidelines for specifying materials, designing tubing layouts, planning inspections and evaluating retrofit or operational changes.

Q: Is it current or superseded?

A: The 2014 edition is listed by ASME as placed on stabilized maintenance and remains in effect; there is no published superseding edition as of the ASME product listing. Users should check ASME for any updates or reaffirmation notices before relying on the document for regulatory compliance.

Q: Is it part of a series?

A: Yes — it is part of the ASME STP‑PT series of technical publications addressing power‑plant technology, materials and component behavior; related STP‑PT titles cover other aspects of boiler and power‑plant design and material performance.

Q: What are the key keywords?

A: Fireside corrosion; erosion; steam oxidation; boiler tubing; superheater; reheater; pulverized coal; supercritical; material selection; inspection; CO2 capture; biomass co‑firing.