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R.F. MacDonald Co. services and sells boilers, pumps, composites and accessories for commercial and industrial applications.

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ASME Requirements for External Piping

Pump ASME

On January 1, 1999 ASME, Section I Power Boiler Code (high-pressure steam or high temperature water) began requiring documentation and hydrostatic testing of all external piping. ASME requires this procedure on all new boilers after December 31,1998. Some changes have been incorporated in Section I, which clearly differentiates between what is considered boiler external piping...

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Do you Maintain a Boiler Log?

A boiler log provides a written record of the boiler operating conditions on a given day and at a given time. The log can be used for both hot water and low and high pressure steam boilers. The purpose is akin to that of a patient’s hospital chart. The log provides a clear historical record...

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Five PM Steps for Your Boiler

Boiler Preventative Maintenance

FIVE PREVENTIVE MAINTENANCE STEPS FOR YOUR BOILER   Equipment Installation. Install only boiler and pressure vessel equipment registered with the National Board. Such equipment will be manufactured in accordance with the American Society of Mechanical Engineers Boiler and Pressure Vessel Code. Most jurisdictions and insurance companies mandate National Board registration.   Replacement Parts. Purchase only...

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How to Calculate TDH & NPSH

Pump CALCULATE-TOTAL-DYNAMIC-HEAD

CALCULATE TOTAL DYNAMIC HEAD (TDH) AND NET POSITIVE SUCTION HEAD (NPSH) The two most critical values that must be calculated for a pump system are Total Dynamic Head (TDH) and Net Positive Suction Head (NPSH). A simple guide to these calculations follows. All symbols noted in the calculations are referenced in the sketch shown below:...

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