BOILER CLEANING PROCEDURES

The following procedures and actions shall be performed by the Provider. All applicable steps detailed below are to be performed on each boiler to be cleaned.

FIRESIDE CLEANING

1. Open fireside access doors and openings for full access to fireside surfaces to be cleaned.

2. Vacuum clean all fireside surfaces including flues, tubes, tube sheets, breechings.

3. Clean the inside of the tubes on firetube boilers using an air turbine reamer wherever possible in conjunction with an industrial trailer vacuum. All efforts shall be made to avoid flushing the fireside surfaces with water to clean the fireside. Other methods of cleaning can be used if space and location prohibit the use of a trailer vacuum.

4. Inspect and report the condition of the fireside brickwork and insulation materials.

5. Report any abnormalities or questionable conditions found regarding the fireside of the boiler.

6. Washcoat fireside brickwork with high temperature refractory coating. Use of refractory cement is not acceptable.

7. Inspect and report condition of fireside gaskets.

8. Graphite the sealing surface of all reusable fireside gaskets to extend the life of the gasket.

9. Leave fireside open for inspection or repairs if necessary.

10. Seal and close fireside of boiler using new sealing materials where applicable.

WATERSIDE CLEANING

1. Drain and open waterside of boiler, including all manhole and handhole openings.

2. Open all float chambers, including removing low water float and probe controls for inspection.

3. Remove pipe plugs in low water control piping and control line piping.

4. Flush out waterside to remove normal amounts of accumulated scale, sludge, or mud that may be in the boiler, low water float chambers, or control piping. If accumulation is excessive (beyond normal levels expected to be found in a boiler maintained with good boiler operating practices), the Purchaser will be notified and if desired, the additional (beyond normal) flushing work will be performed under a separate order.

5. Inspect waterside and report any abnormalities, questionable or unfavorable conditions including signs of leakage, scale, pitting, or poor sealing surfaces.

6. Clean and flush make-up and/or feedwater pump strainers when applicable.

7. Drain the expansion tank when applicable.

8. Leave waterside of boiler open for inspection or repairs if necessary.

9. Close waterside of boiler using new gaskets.

10. Install new gauge glass and gaskets where applicable.

11. Contact boiler operator to add the proper amount of boiler treatment for summer storage when applicable.

12. Fill waterside of boiler.

13. Fire boiler and warm it up to reduce damage caused by sweating, condensation, and/or oxygen pitting.

BURNER/BOILER CHECKOUT


1. Remove and clean burner drawer and pilot assembly.

2. Clean burner air damper and air intake.

3. Check pilot electrode for cracks and adjust electrode setting.

4. Check packing material in air/oil receiving tank, if applicable; replace if necessary and fill with new oil.

5. Clean lub-oil screen and filter if applicable.

6. Check oil pump V-belt if applicable and replace if necessary.

7. Remove fuel oil strainer/filter if applicable and clean or replace.

8. Clean flame safegaurd contacts if applicable.

9. Inspect and report condition of any questionable burner or safety control components or devices.

10. Install cleaned burner drawer back in the burner.

11. Fire and properly warm up boiler.

12. Check and record burner combustion efficiency on gas and oil fuels and adjust for best possible efficiency. If boiler summer load conditions prevent performing proper combustion check out, Provider shall return at the start of the heating season to provide a complete combustion check out. This return trip to check out and adjust boiler combustion shall be provided at no charge and is to be considered part of the cleaning service.

13. Combustion readings shall be obtained using an electronic combustion analyzer.

14. Combustion readings shall be taken and recorded throughout the boiler's firing range and shall include; Oxygen (O2) level, fuel pressures, combustion efficiency, carbon monoxide (CO) level, and stack temperature.

15. Check and record the operation of all boiler safety control readings including burner limit controls and interlock switches.

16. Check and record the operation of the flame safeguard readings and safety timings.

17. Perform a "slow drain" test on steam boilers and record level readings including; pump on, pump off, low water cutoff, and auxiliary low water cutoff.

18. Fire boiler until it shuts off on pressure/temperature and insure that the unit will restart.

19. Flood boiler for summer storage if applicable.

20. Check all handhole/manhole plates for leaks.

21. Check all blowdown/drain valves and control piping for leaks.

22. Check oil, gas, and air lines for leaks.

23. Check fireside seals for leaks.

24. Complete detailed boiler cleaning "check off sheet" indicating work performed and all combustion readings and submit to the Purchaser.

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