scope:

General

This standard provides technical and quality assurance guidelines for the fabrication, welding, and installation of stainless chromium-nickel steel and nickel-alloy roll-bonded and explosion-bonded clad plate conforming to ASTM⁽¹⁾ A 264¹ or A 265² in air pollution control equipment (e.g., flue gas desulfurization [FGD] absorbers, ducts, and stacks). It is intended to be the basis for preparation of a specification to be agreed on by contracting parties.

For the purposes of this standard, the term alloy is used to describe either the stainless chromium-nickel steel or nickel-alloy portion of clad-steel plate or the equivalent solid stainless chromium-nickel steel or nickelalloy material.

It is the responsibility of users of this standard to determine the suitability of the construction materials specified for particular applications.

This standard is only applicable to materials that conform to the following standards or to comparable material specifications as agreed on by contracting parties. In all cases, the latest revision of the standard shall be used: ASTM A 264, ASTM A 265, AWS⁽²⁾ A5.1,³ AWS A5.4,⁴ AWS A5.9,⁵ AWS A5.11, AWS A5.14, AWS A5.17, AWS A5.18, AWS A5.20, AWS A5.22, AWS A5.34.

Standard terms and conditions and safety considerations are beyond the scope of this standard. It is assumed that users will establish and incorporate these aspects within the specification in accordance with their individual requirements.

The following codes and specifications supplement this standard. They may be useful in the development of the specification for this work.

• ASME⁽³⁾ Boiler and Pressure Vessel Code: Section II, Parts A, B, C, and D; and Section IX

• ASNT⁽⁴⁾ SNT-TC-1A

• ASTM specifications for various metals and alloys AWS specifications for testing procedures (AWS B1.10, AWS B2.1)

• Applicable ISO,⁽⁵⁾ European, and regional standards and regulatory documents.

This standard uses fabrication practices that incorporate full-penetration welds. Alternative fabrication practices, such as use of partial-penetration welds covered by batten strips in accordance with NACE Standard RP0292, are not addressed in this standard.

New and improved welding techniques as well as new alloys are being developed. References to specific weld designs and techniques in this standard are not intended to preclude the use of newer technology. The use of alternative methods should be mutually agreed on by all contracting parties.

For the purposes of this standard, ASME material specifications may be used instead of ASTM material specifications.

⁽¹⁾ ASTM International (ASTM), 100 Barr Harbor Dr., West Conshohocken, PA 19248-2959.

⁽²⁾ American Welding Society (AWS), 550 N.W. LeJeune Road, Miami, FL 33126.

⁽³⁾ ASME International (ASME), Three Park Avenue, New York, NY 10016-5990.

⁽⁴⁾ American Society for Nondestructive Testing (ASNT), 1711 Arlingate Lane, Columbus, OH 43228-0518.

⁽⁵⁾ International Organization for Standardization (ISO), 1 ch. de la Voie-Creuse, Case postale 56, CH-1211 Geneva 20, Switzerland.