API St 16AR-2025 PDF

Full title and description

API STD 16AR:2025 — Repair and Remanufacture of Drill-through Equipment (Second edition). This standard specifies requirements, processes and documentation for the repair and remanufacture of drill‑through equipment originally manufactured to API 16A and, where applicable, API 6A, including testing, inspection, welding, marking, certification, handling, storage and shipping of repaired or remanufactured items.

Abstract

API STD 16AR:2025 provides a comprehensive technical and quality framework for organizations performing repair and remanufacture of drill‑through equipment. It defines acceptance criteria, permitted repair/remanufacture methods, nondestructive and pressure testing requirements, welding and metallurgical controls, marking and traceability, and required documentation to return equipment to service in a safe and auditable condition. The standard is intended to support consistent, reliable repairs that preserve or restore design intent and pressure‑containing integrity.

General information

• Status: Current.
• Publication date: 01 January 2025 (published January 2025).
• Publisher: American Petroleum Institute (API).
• ICS / categories: Oil and gas industry standards; drilling equipment; maintenance and remanufacture.
• Edition / version: 2nd edition (2025).
• Number of pages: 127.

Scope

This standard applies to the repair and remanufacture of drill‑through equipment manufactured to API 16A and, as applicable, to equipment produced to API 6A prior to the introduction of API 16A. It covers the full repair/remanufacture lifecycle including inspection, assessment, permitted repair methods (mechanical and welding), materials and filler metal controls, nondestructive examination, pressure and function testing, marking, certification, and requirements for shipping, handling and storage of repaired items. The objective is to ensure repairs restore equipment to safe, serviceable condition with traceability and documentation.

Key topics and requirements

• Repair and remanufacture acceptance criteria and assessment procedures.
• Welding procedures, qualifications, and metallurgical controls for repaired components.
• Nondestructive examination (NDE) requirements and inspection intervals.
• Pressure, functional and acceptance testing after repair/remanufacture.
• Marking, traceability, certification and required repair records.
• Handling, storage and shipping requirements for repaired/remanufactured equipment.
• Conformance and quality system expectations for repair organizations (links to API quality schemes and auditability where applicable).

Typical use and users

Used by equipment repair shops, remanufacture facilities, original equipment manufacturers (OEMs), drilling contractors, engineering consultants, in‑house maintenance teams, third‑party inspectors, and quality assurance personnel tasked with ensuring safe, auditable repair of pressure‑containing drill‑through components. Regulators and operators may reference the standard when qualifying repair vendors or specifying return‑to‑service requirements.

Related standards

Closely related to and intended to be used with API SPEC 16A (Specification for Drill‑through Equipment) and API SPEC 6A where applicable. It also references other API documents covering testing and quality management practices and may be used in conjunction with API repair/remanufacture program requirements and API quality management expectations.

Keywords

repair, remanufacture, drill‑through equipment, API 16AR, API 16A, API 6A, welding, NDE, pressure testing, marking, traceability, certification, drilling equipment maintenance

FAQ

Q: What is this standard?

A: API STD 16AR:2025 is the American Petroleum Institute standard that defines requirements for repair and remanufacture of drill‑through equipment (second edition, 2025).

Q: What does it cover?

A: It covers assessment and acceptance criteria, permitted repair and welding methods, nondestructive and pressure testing, marking and traceability, documentation and certification, and handling/storage/shipping requirements for repaired or remanufactured drill‑through equipment.

Q: Who typically uses it?

A: Repair and remanufacture facilities, OEMs, drilling contractors, maintenance and inspection teams, and procurement or QA groups that need to qualify repairs and ensure return‑to‑service integrity.

Q: Is it current or superseded?

A: It is current as of the 2025 publication. The 2025 edition supersedes earlier versions and errata of API STD 16AR (previous editions/errata listed in the standard’s front matter).

Q: Is it part of a series?

A: Yes — it is part of API’s family of drilling and pressure‑equipment standards and is intended to be used alongside API SPEC 16A and related API specifications and recommended practices dealing with drilling equipment, testing and quality management.

Q: What are the key keywords?

A: Repair; remanufacture; drill‑through; API 16AR; welding; NDE; pressure testing; traceability; certification.