Proper Boiler Start-Up Procedures Can Reduce Boiler Failures
It happened to a school in Nebraska. Sediment caused a low water condition and overheating. As a result, the school had to cancel classes and rent a temporary boiler so the school could reopen during repairs. The total paid loss was $123,664.
As business equipment insurance specialists, Hartford Steam Boiler Inspection and Insurance Company (HSB) has investigated thousands of boiler failures resulting in claims as high as $300,000. The trouble often starts with a leak. If the boiler’s safety devices are working properly, the small leak will cause problems over time that will require repair. If the safety devices are not working properly, serious problems are imminent because “low water” in a boiler is like an engine without oil. The results of a boiler failure are repairs, replacement and possible new construction costs.
As you prepare to start up boilers for the colder months ahead, keep the following maintenance tips from HSB inspectors in mind to help you avoid the most common boiler heating problems.
- Have a competent service firm disassemble the low water cut-off and make-up water feeding devices. All parts should be thoroughly cleaned and reconditioned as required,then tested before the boiler is put into regular service.
- Burner equipment should be cleaned and adjusted for maximum efficiency.
- The boiler heating surfaces, firebox, ash pit, casing and ducts should be cleaned of all deposits.
- If heat tapes are in place in the gutters, downspouts or drains, make sure they are in working order
- The safety/relief valve should be tested for freedom of operation. These valves should also be tested once a month while in service.
- If the boiler is a type designed to permit cleaning of water spaces, this should be done, and where necessary, a suitable chemical treatment should be used to prevent corrosion.
- All pressure and temperature controls and gauges should be checked for satisfactory operation.
- The water level gauge glass must be cleaned to indicate the proper level at all times.
- Any leaking pipes or fittings located on the boiler or anywhere throughout the heating system should be repaired or replaced.
- Water lines exposed to freezing temperatures should be insulated.
- All mechanical equipment, such as fans and pumps, should be well-lubricated.
- A suitable record of boiler operation should be established and maintained throughout the season.
- The boiler room should be kept dry and clean.
For a copy of HSB’s heating boiler log, visit hsb.com/cmsfiles/423.PDF.
