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Blow Through Boiler Gauge GlassApril 30, 2014 5:09 am | Leave a Comment | Frozee

There must be two independent means of determining the water level, one of which must be a direct

reading gauge glass. The other is usually a remote reading gauge in the control room which should

regularly be compared with the boiler gauge glass.

Procedure for Blowing Through Gauge Glass

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1. Close off cocks S and W and open drain D. Make sure both water and steam cocks are

holding.

2. Open cock W and blow through. Make sure that water is coming out and cock W is clear. Close

water cock.

3. Open cock S and blow through. Make sure that steam is coming out and cock S is clear. Close

Scavenge Port Inspection onboard

Ships

Operation of Freshwater Generator with

Jacket Cooling Water

Shell and Tube Freshwater Generator

Testing of Water Mist Fire Fighting

System onboard Ships

Maintenance of Water Mist Fire Fighting

System

Water Mist Fire Fighting System

Alexa Rank

Categories

Air Conditioning BoilersCompressors DieselEngines Fire DetectorsFire Fighting Forms



steam cock.

4. Close drain D.

5. Open water cock W and check water level rises in the glass.

6. Open steam cock S for showing boiler water level.

The glasses should be kept clean. The glands should be nipped up at the first sign of leakage as the

chemicals in the boiler water will leave a deposit on the glass. The glasses should have protective

glass shields around them and be properly illuminated.

Reference

Operation and Maintenance of Machinery in Motor Ships by N.E. Chell

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Posted in: Boilers | Tagged: blow through, boiler gauge glass

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What is Ogee RingApril 30, 2014 5:05 am | Leave a Comment | Frozee

Connecting the bottom of the furnace to the boiler shell plating is a seamless Ogee ring. This ring is

pressed out of thicker plating than the furnace; the greater thickness is necessary since circulation in

its vicinity is not as good as elsewhere in the boiler and deposits can accumulate between it and the

boiler shell plating. Hand hole cleaning doors are provided around the circumference of the boiler in

the region of the Ogee ring.

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Ogee Ring

Figure above shows the method of attachment of the furnace and Ogee ring for Cochran and

Clarkson welded boilers, welded to Class I Fusion Welding Regulations. Tell-tale holes drilled at

equal circumferential intervals in the boiler shell enable leakage between the Ogee ring and the

boiler shell to be detected.

References

REEDS GENERAL ENGINEERING KNOWLEDGE FOR MARINE ENGINEERS, by Leslie Jackson and

Thomas D. Morton



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Posted in: Boilers | Tagged: boiler, ogee ring

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