Subject : A.P.I. (American Petroleum Institute) and C.P.I. (Chemical Process Industry) merger 12-05

Any prediction about the future of the pump and seal business would have to include the high probability that the CPI will adopt the API seal standard. The adoption of this standard will be enthusiastically supported by the CPI insurance companies and will dramatically increase the price of mechanical seals to the consumer, as well as bring seals into a commodity status which has been the goal of some of the largest pump and seal manufacturers all along.

Recent pump/seal mergers, buy outs, and alliances hint that the adoption of these new standards will also dramatically increase the profits of these highly competitive manufacturers.

The API (American Petroleum Institute) standard is the one universal standard being used by oil refineries throughout the world. There is on going talk about combining this standard with the chemical industry ANSI (American National Standards Institute) standard for a single unified pump standard.

The problem with all standards of this type is that they have produced a failure rate in mechanical seals that exceeds 85%. The only part of a mechanical seal that is sacrificial is the carbon face and in better than 85% of the cases there is plenty of carbon face left when the seal begins to leak. The A.P.I. specification addresses just about everything about mechanical seals. The subjects include:

  • Seal design
  • Materials
  • Accessories
  • Instrumentation
  • Inspection, testing and preparation for shipment.
  • Manufacturing.

In this section we'll be looking at just a few of those parts of the A.P.I. standard 682 that when combined with the C.P.I. standard, will be affecting your seal purchases in the near future. Most of this information was taken from A.P.I. Standard 682, First Edition, dated October 1994. I recommend you get hold of a copy of this and any future updates to learn the full particulars.

2.1.1

2.1.2

2.1.5

2.1.6

2.1.7

2.2.6

2.27

2.3.3.1

2.3.5.1

2.3.5.2

2.3.10

2.3.18.1

2.3.20

2.4

2.4.1

2.4.3

2.4.4.4

2.4.5

2.4.6

2.4.8

2.4.9

 

2.4.10.2

2.4.9

2.5.1

2.6.1

3.2.2

3.2.3

3.2.4

3.6

 

3.7.2

4.2.1

4.2.3

4.5.4.1.1

Section 4.4.4 contains numerous references to dual seal system reservoirs.

4.5.5.1

Section 4.6 addresses the circulation of the buffer/barrier fluid.

There will be some benefits to the user when the API specification is adopted in to the CPI industry

What is the problem with this API specification as a standard for the Chemical Process Industry? There are a lot of things I do not like about it in its present form. If combining with the CPI means a complete re-writing of the API specification that will be fine depending upon the final result.

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