7 Your Industrial Boiler Needs to be Cleaned

SIGNS

1

M U LT I P L ETUBE FAILURES

Your plant has experienced

under-deposit corrosiondue to

2

CHEMISTRY EXCURSION EVENTSYour plant has experienced one major or several minor

3

Your plant has experienced a

C O N D E N S E RT U B E L E A K

4 Your plant is

REPLACINGBOILER TUBES>10% of boiler surface area

during an outage

5

Your plant is

FUELS OR BURNERSCHANGING

6

Your plant is

Chemical Treatment ProgramCHANGING CYCLE

7

Best Practice is to sample

on a regular basis& TEST TUBES

A Boiler Tube Sample Says So

deposit weight density (DWD) indicates that it is time

BOILER TUBE SAMPLE ANA L YSIS

7

We’ll elaborate

And, because this is a BEST PRACTICE

Regularlyscheduledtubesample

BEST PRACTICECollect a tubesample at least onceevery two years

After afailure

Take sample from area(s) of thehighest heat transfer & when circulationproblems are known to exist

Take sample from failed tube as wellas sample an adjacent tube

Tube sample should be18-24 inches in length

Utilize proper procedures fordeposit collection & measurement

Measure the deposit on the hot and cold sides separately

Perform analysis for the type of deposit present (i.e. iron,copper, calcium , si licon, etc.) & quantity (g/ft2) of deposit present

For more information on boilertube sampling and analysisprocedures:

Refer to ASME CRTD-103“Consensus on Best TubeSampling Practices for Boilersand Non-Nuclear SteamGenerator”

Compare results from year-to-year

NOTE: For chemicalcleaning, the hot side ismost important.

Recommended removalprocedures are ASTMD3483 Method A or C

18-24 in

NOTE: This determinesbuild-up rates to helppredict chemical cleaningschedule

BEST PRACTICECollect a tubesample duringeach major outage

How to use DWD to determine it is TIME TO CLEAN

https://www.asme.org/products/books/consensus-best-tube-sampling-practices-boilers

If you’ve determined your boiler needs cleaned, we recommend consulting an expert to determine the best chemical treatment program.

And, why not have that expert be us?

WHAT DO I DO NOW?

Best solution depends on cycle chemical treatment program used, types and amount of deposit, waste handling costs and other factors that can vary from site to site.

To get started, contact Colleen Layman