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New England Mechanical Overlay has demonstrated a standard of quality and knowledge which has earned us our certifications from the American Society of Mechanical Engineering and the National Board of Boiler & Pressure Vessel Inspectors. These certifications enable N.E.M.O. to offer our customers the ultimate in flexibility for both repairs and new construction in their power boiler or process plants.

ASME: Instead of 28 separate ASME certification marks, there is now a single comprehensive mark. To maintain a link to the current marks listed below, the new mark will be used in conjunction with a certification designator.

PP: The ASME “PP” stamp certification applies to power piping. All of the construction rules for materials, design, fabrication, and installation are contained in ASME B31.1.

U: The ASME “U” stamp certification allows us to fabricate new pressure vessels falling under ASME Section VII, Div. 1 Boiler and Pressure Vessel Code.

S: The ASME “S” stamp certification applies to boilers within steam or vapor pressure greater than 15 psig external to itself. It also applies to high temperature water boilers with operating pressures greater than 160 psig and/or temperatures exceeding 250 degrees Fahrenheit.

NB: The “NB” mark is used by manufacturers to identify items registered with the national board.

R: The “R” symbol stamp is required for the repair and/or alteration of boilers, pressure vessels, and other pressure-retaining items.