Integripedia Topic
API RP 751 - Safe Operation of Hydrofluoric Acid Alkylation Units

Explore this topic

API RP 751, Safe Operation of Hydrofluoric Acid Alkylation Units, is a recommended practice released by the American Petroleum Institute (API) that provides guidance to refinery operators on the safe operation of hydrofluoric acid (HF) alkylation units. RP 751 includes recommendations (“should”) and certain requirements (“shall”) on hazards management, operating procedures, worker procedures, material inspection and maintenance, transportation and inventory control, relief and utility systems, and risk mitigation. Moreover, the document provides additional information on the elements of a comprehensive HF audit, HF exposure limits, and corrosion & materials considerations specific to HF alkylation units.

RP 751 was originally released in June 1992, with the current 4th Edition published in May 2013. An updated 5th Edition is scheduled to be released in 2021. 

CLICK HERE to read about some of the key changes anticipated in the upcoming 5th Edition.

Related Topics

Relevant Links

Topic Tools

Share this Topic

Contribute to Definition

We welcome updates to this Integripedia definition from the Inspectioneering community. Click the link below to submit any recommended changes for Inspectioneering's team of editors to review.

Contribute to Definition
Articles about API RP 751 - Safe Operation of Hydrofluoric Acid Alkylation Units
    News related to API RP 751 - Safe Operation of Hydrofluoric Acid Alkylation Units

      Inspectioneering Journal

      Explore over 20 years of articles written by our team of subject matter experts.

      Company Directory

      Find relevant products, services, and technologies.

      Talent Solutions

      Discover job opportunities that match your skillset.

      Case Studies

      Learn from the experience of others in the industry.


      Inspectioneering's index of mechanical integrity topics – built by you.

      Industry News

      Stay up-to-date with the latest inspection and asset integrity management news.


      Read short articles and insights authored by industry experts.

      Expert Interviews

      Inspectioneering's archive of interviews with industry subject matter experts.

      Event Calendar

      Find upcoming conferences, training sessions, online events, and more.


      Downloadable eBooks, Asset Intelligence Reports, checklists, white papers, and more.


      Watch educational and informative videos directly related to your profession.


      Commonly used asset integrity management and inspection acronyms.