American Petroleum Institute: Standard 682, 4th Edition Shaft Sealing Systems for Centrifugal and Rotary Pumps
Part 1 - Introduction
Knowledge Series
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This Fluid Sealing Association Knowledge Series training presentation introduces the American Petroleum Institute: Standard 682, 4th Edition. This is part of a series of presentations of this industry standard.
This presentation introduces API-682:
▪ What is API 682?
▪ Why does API 682 exist?
▪ Who defines API 682?
▪ Where does it apply?
▪ This FSA training material is made available for informational purposes only and is made available “AS IS.” It is intended to serve only as a summary of the content of the API-682 standard and not as a substitute for or to replace or supersede the actual language of the API standard.
▪ For the full language of the API-682 standard, please refer to the actual standard and/or refer to API’s website for further information: https://www.api.org/products-and-services/standards. FSA disclaims any and all liability for any injuries or damages to persons or property resulting from reliance upon this informational summary.
What is API-682?
“This standard specifies requirements and gives recommendations for sealing systems for centrifugal and rotary pumps used in the petroleum, natural gas, and chemical industries.”
Simply put...
▪ API 682 is the engineering standard that governs Mechanical Seal designs for the oil and gas markets
▪ Provides universal nomenclature to the Mechanical Seals world
▪ Provides standardized qualification testing protocols for Mechanical Seals
Why does API 682 exist? What is its purpose?
Increased Safety, Improved Reliability, and a Cleaner
Environment
“It is applicable mainly for hazardous, flammable, and/or toxic services where a greater degree of reliability is required for the improvement of equipment availability and the reduction of both emissions to the atmosphere and life-cycle sealing costs.”
The standard is designed to supply a high probability* of the mechanical seal operating for a continuous 25,000 hours / 34.7 months / 2.85 years without replacement.
*Applications vary considerably, and seal makers have no control as to how the seal is operated
Who Defines API 682
Committee members comprised of experienced professionals from end users, engineering companies, and seal manufacturers
End users are supported by suppliers
End Users:
• Aramco
• ExxonMobil
• Marathon
• Repsol
• Shell
• Total
Seal Manufacturers:
• A. W. Chesterton
• AESSEAL
• Eagle Burgmann
• Flowserve
• John Crane
• Latty International
Engineering Companies and Trade Associations:
• British Pump Manufacturers Association
• Fluid Sealing Association
• Fluor
• Independent consultants
When was API 682 developed?
In the 1980’s refineries compared sealing solutions Task Force began in early 1990’s
▪ 1st Edition (1994) - 124 pages
▪ 2nd Edition (2002) - 180 pages
▪
3rd Edition (2004) - 195 pages
▪ 4th Edition (2014) - 253 pages
▪ 2018 - Task force was assembled to work on the 5th Edition
