2016 Boiler safety checklist and preventative maintenance, Notas de estudo de Cultura

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Boiler Safety Checklist &

Preventative Maintenance

Boiler Safety Checklist &

Preventative Maintenance

Radiant Realities Tim Blomdahl

ASME Section 1

Power Boilers

MAWP Above 15 PSI Steam 160 PSI Hot Water 250 DEG. F. Hot Water

Pressure Vessel Construction Codes

Boiler MAWP (maximum allowable working pressure) equals the design pressure & maximum safety valve setting of the pressure vessel

ASME Section 1

Power Boilers

MAWP Above 15 PSI Steam 160 PSI Hot Water 250 DEG. F. Hot Water ASME Section 4 Heating Boilers MAWP Below 15 Psi Steam

To View 2007 Code: Google asme.bpvc.iv.2007.pdf Choose Site law.resource.org/pub/us/code

Firetube Boilers

Cleaver Brooks 200 hp Firetube Boiler

Scotch Marine Type

• Combustion gas travels inside of the tubes
• Two, three or four construction
• 5 sq. ft. of heating surface per boiler hp
• 1000 sq. ft. of fireside heating surface = 200hp
• Natural gas or light oil fired (Typically dual fuel)
• Forced draft burner
• 16,300 lb shipping weight
• 60” diameter shell x 15’-0” long Scotch Marine Type
• Combustion gas travels inside of the tubes
• Two, three or four construction
• 5 sq. ft. of heating surface per boiler hp
• 1000 sq. ft. of fireside heating surface = 200hp
• Natural gas or light oil fired (Typically dual fuel)
• Forced draft burner
• 16,300 lb shipping weight
• 60” diameter shell x 15’-0” long

Typical 200 hp Boiler Rating

Firetube Boilers Are Rated By Horsepower (hp) Boiler hp is steam output

• 1 boiler hp evaporates 34.5 lbs of water per hour
• 200 hp boiler output (200hp*34.5lbs/hr=6900)
• 6900 lbs of steam per hour output Burner Input 42,000 btu per hp
• 8,165,000 Btu fuel input at rated capacity
• 81.7 Therms of gas (100,000 btus per therm)
• 58.3 Gph of light oil (@ 140,000 btus per gal) Firetube Boilers Are Rated By Horsepower (hp) Boiler hp is steam output
• 1 boiler hp evaporates 34.5 lbs of water per hour
• 200 hp boiler output (200hp*34.5lbs/hr=6900)
• 6900 lbs of steam per hour output Burner Input 42,000 btu per hp
• 8,165,000 Btu fuel input at rated capacity
• 81.7 Therms of gas (100,000 btus per therm)
• 58.3 Gph of light oil (@ 140,000 btus per gal)

0psig gauge pressure & 212 F. Feedwater = 34.5 lbs/hr of steam per boiler horsepower

200 hp Boiler Water Side

At Normal operating water level (NOWL)

• A Cleaver Brooks boiler holds 8, pounds of water or 1,034 gallons.
• The minimum safe operating water level is typically 3” above the tubes. (Any less compromises the structural integrity of the boiler). At Normal operating water level (NOWL)
• A Cleaver Brooks boiler holds 8, pounds of water or 1,034 gallons.
• The minimum safe operating water level is typically 3” above the tubes. (Any less compromises the structural integrity of the boiler).

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Steam Boiler

Ancillary Equipment

Steam Boiler

Ancillary Equipment

Water Filters Water Softeners Chemical Feeders Packaged Feedwater Systems Blowdown Separators

Fresh Water & Water Treatment

Most steam systems need fresh water make-up

• Water filters are used to remove impurities
• Water softeners are used to remove hardness
• Chemicals are also used to remove hardness Most steam systems need fresh water make-up
• Water filters are used to remove impurities
• Water softeners are used to remove hardness
• Chemicals are also used to remove hardness

Typically Two Water Softener Tanks Are Used. One to soften water and one to regenerate the resin in a tank that has been used up. This way the softening process can continue without interruption Typically Two Water Softener Tanks Are Used. One to soften water and one to regenerate the resin in a tank that has been used up. This way the softening process can continue without interruption

Salt for regeneration