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August 6, 2020

The HEI Standard for Closed Feedwater Heaters provides a method for evaluating the allowable loads on shell type heat exchanger nozzles. This method is a simplification of the WRC Bulletin 107 methodology (discussed in Section 3.4.2 of these seminar notes), in which th...

August 6, 2020

The API 661 Standard for Air Cooled Heat Exchangers for General Refinery Service covers the allowable loads on the vertical, collinear nozzles found on most single- or multi-bundled air cooled heat exchangers. The types of nozzles which may be checked are those which a...

August 5, 2020

The requirements of this standard are identical to those of NEMA SM23, except that all of the NEMA SM23 allowables are increased by 85%. Therefore it is not necessary to discuss this standard here. Please check NEMA SM23 Standard for Steam Turbines

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July 21, 2020

Analysis of pump nozzle loads is covered by API Standard 610 "Centrifugal Pumps for General Refinery Service". The requirements of the 6th edition, issued in January of 1981, and those of the 7th edition, issued in February, 1989, can be evaluated using CAESAR II's ROT...

July 20, 2020

NEMA Standard SM23 requires that steam turbines be evaluated by two sets of simple force / moment calculations. The two types of computations are used to satisfy: 

  1. individual nozzle allowables 

  2. cumulative equipment allowables 

First, the loads on each in...

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LITTLE P.ENG. FOR ENGINEERS TRAINING /  Engineering Consultant

3705 Fonda Way #18 Southeast Calgary, T2A 6G9

Canada

+1 (587) 802-4050

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