API Standard Pumps—Shaft Sealing Systems for Centrifugal and Rotary. Pumps. FOURTH EDITION | MAY | PAGES | $ | PRODUCT NO. API - pdf - Download as PDF File .pdf), Text File .txt) or read online. API - Ebook download as PDF File .pdf) or read book online. API Mechanical Seal.
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EagleBurgmann range of balanced pusher and metal bellows mechanical seals acc. to API 4th ed. EagleBurgmann SPB6 seal supply system Plan 53B. API PIPING PLANS API 4th Edition “To check out mechanical seal flushing arrangements and piping plans, I have consistently found this to be the most. and the API seal selection software on CD. Find your nearest contact at www ronaldweinland.info Important Note. Operating manuals and plant.
Plan 55 is an externally circulated buffer unpressurized fluid for Arrangement 2 seals. Plan 65 is now subdivided into 65A and 65B. End users can use Plan 65A to detect an excessive leakage flow rate and Plan 65B to detect a certain amount of cumulative leakage. Plans 66A and 66B are new to the standard, although end users have used them previously in pipeline applications. These plans detect and restrict excessive leakage rates in case of an Arrangement 1 seal failure. Accessories The 4th edition now requires Plan 52, 53A, 53B and 53C systems to have a sufficient working volume of buffer or barrier fluid for at least 28 days of operation without refilling. As a point of reference, the default reservoir for Plans 52 and 53A has a three-gallon capacity, or pot, for pump shafts smaller than 2.
Please note that this new standard does not cover the design of the seal components.
That decision is left to the individual seal manufacturers. When the inner seal fails, the containment seal is designed to run under full seal chamber conditions for a minimum of eight hours and prevent or minimize process fluid leakage to atmosphere. This design is used primarily on dual pressurized gas seals. It may also be used on liquid or mixed phase applications. Seal arrangements: One seal per cartridge assembly Contacting single wet seal with a fixed throttle bushing.
Liquid buffer fluid Dual contacting wet seals. During testing, the seals must maintain a leakage rate of less than ppm as measured by EPA Method 21 or 5. The updated standard now also addresses natural draft air-cooled heat exchangers but does not address forced draft systems.
Data Transfer and Data Sheets The 4th edition has revised the data sheets in Annex C extensively to make them the same for all seal categories. Only two data sheets are included in the 4th edition—one in metric units and one in U.
The new edition also folds Annex J into Annex E. In light of the additional orientations and configurations included in this edition, the standard has revised the qualification test procedures and moved them into Annex I. Section 10 still includes all other requirements. Section 10 also features a clearer version of the assembly integrity test, or air test.
This simple, yet often misunderstood, test is based on two decades of practical experience and is intended to show whether the cartridge is assembled correctly. Previous editions of API required metal plugs and anaerobic sealants when shipping new or repaired cartridges. After much debate, the task force decided that threaded connection points should be protected with plastic plugs for shipment. These plastic plugs should be red and have center tabs that operators can pull easily to distinguish the plugs from metal plugs.
Shippers should also attach yellow warning tags to the plugs to indicate that end users need to remove the plugs before operation.
Technical Tutorials and Illustrative Calculations Although tutorial notes are scattered throughout API , this edition expands the tutorial section, Annex F, from seven pages to 42 pages. New piping plans were developed to support these new seal types.
There was confusion on how to designate these new seals, arrangements, and piping plans. While the First Edition had become a sort of international standard, it was written very much like an American standard. Many of the dimensions defaulted to US customary units.
This made the standard difficult to apply in many countries. All of these factors influenced the direction of the Second Edition.
The goal was to continue with the objectives of the First Edition while expanding into new industries and capture new seal technology. This was done with the clear intention of having the standard issued as an ISO international standard. This way users could begin using the standard years ahead of the ISO release. During the ISO review process, member countries around the world are allowed to suggest changes, make comments, and identify corrections. This process can take several years. In addition ISO documents have strict requirements related to formatting and how requirements and.