[labnetwork] Steam boiler question

[Morrison, Richard H., Jr]

Thanks for the response Nicholas, we need to check on the thickness and look at the inspection record.

Thanks

Rick


From: Nicholas Menounos [mailto:menounos at mit.edu]
Sent: Wednesday, July 03, 2019 11:59 AM
To: Morrison, Richard H., Jr <rmorrison at draper.com>; labnetwork at mtl.mit.edu
Subject: RE: Steam boiler question

Hi Rick,

A solid clever-brooks (or equal) has a life expectancy around 25 years, but I have seen many units running without issue well past 40 years. Steam boiler life has a lot to do with system maintenance. If you have a lot of untreated raw water makeup, inadequate corrosion inhibitors or poorly functioning dearator/preheater they can go pretty quick.

Have you had the boiler pressure vessel tested/scanned?

Non-destructive testing can determine the remaining material thickness in the shell. If you have a coupon racks, you can track the rate of corrosion (inches/yr) and estimate the remaining life based on minimum allowable thickness. If you don't, you could swag the rate by looking at original material thickness.

Nicholas Menounos, PE, LEED AP
Assistant Director of Infrastructure

MIT.nano
Massachusetts Institute of Technology
77 Massachusetts Ave, Bldg 12-4003
Cambridge, MA 02139
Cell: (508) 932-0938
Office: (617) 253-7234
Email: Menounos at mit.edu<mailto:Menounos at mit.edu>

From: labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu> [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Morrison, Richard H., Jr
Sent: Wednesday, July 3, 2019 9:38 AM
To: labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu>
Subject: [labnetwork] Steam boiler question

HI Everyone,

I have a facility question, we have 2 steam boilers which provide heat and steam to make humidity. One boiler has tubes that have leaked and we can either re-tube the boiler (7 years old) or purchase a new boiler. What is the collective wisdom out there around the risk of lifetime of a re-tubed boiler?

Thanks and Happy 4th

Rick



Richard H. Morrison
Principal Member of the Technical Staff
Draper
555 Technology Square
Cambridge, MA
02139-3573

Work  617-258-3420
Cell  508-930-3461
www.draper.com<http://www.draper.com>

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