ISO 16812-2019 PDF

Full title and description

ISO 16812:2019 — Petroleum, petrochemical and natural gas industries — Shell-and-tube heat exchangers. This International Standard specifies requirements and gives recommendations for the mechanical design, material selection, fabrication, inspection, testing and preparation for shipment of shell-and-tube heat exchangers intended for petroleum, petrochemical and natural gas applications.

Abstract

This document supplements API Standard 660 (9th edition, 2015) and defines additional or modified requirements where applicable. It applies to shell-and-tube heat exchangers used as heaters, condensers, coolers and reboilers in the petroleum, petrochemical and natural gas industries. It is not applicable to vacuum-operated steam surface condensers and to feed-water heaters. The standard covers mechanical design, materials, fabrication, inspection, testing and shipment preparation.

General information

• Status: Published (International Standard; confirmed following systematic review).
• Publication date: February 2019 (2019-02). Confirmed as current after review in 2024 (review/confirmation actions completed in 2024).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 27.060.30 (Boilers and heat exchangers); 75.180.20 (Processing equipment — petroleum and natural gas industries).
• Edition / version: Edition 3 (ISO 16812:2019).
• Number of pages: 3 (ISO metadata). Note: national/adopted versions (e.g., BS/EN adoptions) may show different pagination or formatting.

Scope

Specifies supplementary requirements and recommendations to API Std 660 for shell-and-tube heat exchangers used in petroleum, petrochemical and natural gas industries. Applicable to heaters, condensers, coolers and reboilers; excludes vacuum-operated steam surface condensers and feed-water heaters. Covers mechanical design, material selection, fabrication, inspection and testing, and preparation for shipment.

Key topics and requirements

• Mechanical design principles specific to industry service conditions and exchanger types (heaters, condensers, coolers, reboilers).
• Material selection guidance and requirements for pressure‑retaining and non‑pressure parts appropriate to hydrocarbon processing environments.
• Fabrication and welding practices aligned with industry quality expectations and applicable codes.
• Inspection and non‑destructive testing requirements to verify integrity and workmanship.
• Pressure and leak testing requirements and acceptance criteria as supplementary to API Std 660 where specified.
• Requirements for preparation for shipment, marking and documentation to support traceability and safe transport.
• Statement of applicability and explicit exclusions (e.g., vacuum steam surface condensers, feed‑water heaters) and relationship to API Std 660 (identifies where API requirements apply except as modified by this standard).

Typical use and users

Used by equipment designers, mechanical and process engineers, heat‑exchanger manufacturers, fabricators, inspection and testing authorities, purchasing and quality assurance teams within petroleum, petrochemical and natural gas companies, and by authorities responsible for asset integrity and procurement of shell‑and‑tube exchangers.

Related standards

API Standard 660 (Shell-and-tube heat exchangers) — explicitly supplemented by ISO 16812:2019; previous editions of ISO 16812 (e.g., ISO 16812:2007) which this edition replaces; national/adopted versions such as BS EN ISO 16812:2019. Other related documents include applicable ASME and national pressure‑vessel and piping standards and industry codes referenced by API and ISO normative clauses.

Keywords

shell-and-tube heat exchanger; petroleum; petrochemical; natural gas; mechanical design; material selection; fabrication; inspection; testing; API 660; heaters; condensers; coolers; reboilers.

FAQ

Q: What is this standard?

A: ISO 16812:2019 is an International Standard that provides supplementary requirements and recommendations to API Std 660 for the design, materials, fabrication, inspection, testing and shipment of shell‑and‑tube heat exchangers used in petroleum, petrochemical and natural gas industries.

Q: What does it cover?

A: It covers mechanical design, material selection, fabrication and assembly practices, inspection and testing procedures, and preparation for shipment for heaters, condensers, coolers and reboilers. It also states exclusions (for example, vacuum‑operated steam surface condensers and feed‑water heaters are excluded) and how it supplements API Std 660.

Q: Who typically uses it?

A: Mechanical/process engineers, heat exchanger designers and manufacturers, fabricators, inspection and testing bodies, procurement and quality teams in petroleum/petrochemical/natural gas organizations, and regulatory/inspection authorities.

Q: Is it current or superseded?

A: ISO 16812:2019 is the current edition (third edition, published February 2019). The standard underwent a systematic review and was confirmed as current in 2024; the 2007 edition was withdrawn and replaced by the 2019 edition.

Q: Is it part of a series?

A: ISO 16812 is a standalone International Standard focused on shell‑and‑tube heat exchangers for specific industries; it is related to and intended to be used alongside API Std 660 and may be referenced by national/adopted versions (for example BS EN ISO 16812:2019).

Q: What are the key keywords?

A: Shell‑and‑tube heat exchangers, petroleum, petrochemical, natural gas, mechanical design, fabrication, inspection, testing, API 660, heaters, condensers, coolers, reboilers.