boiler safe working practice

8/9/2019 Boiler Safe Working Practice

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2/12

BOILER ROOMBOILER ROOM

As a precaution against funnel againstAs a precaution against funnel againstfunnel fires and sparks, burners, tubes,funnel fires and sparks, burners, tubes,uptakes, exhaust manifolds and sparksuptakes, exhaust manifolds and sparksarresters should be maintained in goodarresters should be maintained in goodworking condition. If there is a funnel fire orworking condition. If there is a funnel fire orsparks are emitted from the funnel, thesparks are emitted from the funnel, thetanker should, if necessary, alter the coursetanker should, if necessary, alter the course

as soon as possible to avoid sparks fallingas soon as possible to avoid sparks fallingand must be stopped and all openingsand must be stopped and all openingsclosedclosed


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BLOWING THE BOILER TUBESBLOWING THE BOILER TUBES

Boiler tubes should not be soot prior toBoiler tubes should not be soot prior to

arrival and after department from a port. Thearrival and after department from a port. The

officer on bridge watch should be consultedofficer on bridge watch should be consulted

prior to the operation commencing and theprior to the operation commencing and the

vessels course altered if necessary. Boilervessels course altered if necessary. Boiler

tubes should not be blown when the vesseltubes should not be blown when the vessel

in port.in port.


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EMERGENCY AND ABNORMALEMERGENCY AND ABNORMAL

RUNNING CONDITIONRUNNING CONDITION

The following are the guidelines for an engineer onThe following are the guidelines for an engineer onduty to respond to emergencyduty to respond to emergency

HIGH WATER LEVEL:HIGH WATER LEVEL:a. check and reduce firing rate.a. check and reduce firing rate.

b. perate blow down systemb. perate blow down system

c. throttle feed check valves.c. throttle feed check valves.

d. If bad water hammer due to carry!over isd. If bad water hammer due to carry!over isexperienced, close steam outlet valve to preventexperienced, close steam outlet valve to prevent

damage to pipeline and machinery.damage to pipeline and machinery.


5/12

Water level below gage gla!!:Water level below

gage gla!!:

a. shut!off burner "if not cut!outa. shut!off burner "if not cut!out

automatically#automatically#b. take the boiler out of load.b. take the boiler out of load.

c. ensure the internal damage due toc. ensure the internal damage due to

overheating.overheating.

d. $o not bring!up the water level in hasted. $o not bring!up the water level in haste

until the boiler parts are cooled down.until the boiler parts are cooled down.


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LARGE LEA":LARGE LEA":

%. &ater level vanishes%. &ater level vanishes'. Bursting noise'. Bursting noise

(. $rop in steam pressure(. $rop in steam pressure

). *lame may be put off by steam.). *lame may be put off by steam.


7/12

EMERGENCY O#ERATION DUEEMERGENCY O#ERATION DUE

TO $IRETO $IRE

*ire can occur in the*ire can occur in the a%r &eater!'a%r &eater!'

e(o)o*%+er!e(o)o*%+er!,, !,er&eater!!,er&eater!andand e-&a!te-&a!t

ga! &eat e-(&a)ger!ga! &eat e-(&a)ger!. These heat. These heat

extracting units are all situated in the path ofextracting units are all situated in the path of

combustion gases and under certaincombustion gases and under certain

conditions, fortunately rare, can experienceconditions, fortunately rare, can experience

disastrous fires. These fires are two typedisastrous fires. These fires are two type


8/12

TWO TY#ES O$ BOILER $IRE:TWO TY#ES O$ BOILER $IRE:

%.+T *I-%.+T *I-

'. /$0-1 *I-'. /$0-1 *I-


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A$2A1TA0-+ andA$2A1TA0-+ and

$I+A$2A1TA0-+ * *ire Tube$I+A$2A1TA0-+ * *ire Tube

BoilerBoiler ADVANTAGES O$ $IRE TUBE BOILERADVANTAGES O$ $IRE TUBE BOILER

%.can use impure water, without serious%.can use impure water, without serious

damage.damage.'. They can contain a large amount of water,'. They can contain a large amount of water,

and do not re3uire exacting supervision asand do not re3uire exacting supervision as

regard to water level. +team pressure isregard to water level. +team pressure issteadier.steadier.

(.Their first cost is relatively low(.Their first cost is relatively low


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). They are accessible to maintenance.). They are accessible to maintenance.

4. Because fire is on the inside of Boiler4. Because fire is on the inside of Boiler

and is surrounded by water and radiationand is surrounded by water and radiationlosses are lower.losses are lower.


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DISADVANTAGES O$ $IRE TUBE BOILERDISADVANTAGES O$ $IRE TUBE BOILER

%. Because they contain large amount of%. Because they contain large amount ofwater, they re3uire a long interval of time towater, they re3uire a long interval of time to

raise a steam and are not flexible asraise a steam and are not flexible as

regards to changes of steam demand.regards to changes of steam demand. '. They are more susceptible to explosion'. They are more susceptible to explosion

and in such a case, the large volume ofand in such a case, the large volume of

escaping water flashing into steam uoponescaping water flashing into steam uoponreaching the atmosphere might causereaching the atmosphere might cause

serious damage to personnel.serious damage to personnel.


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(. igh steam pressure would re3uire(. igh steam pressure would re3uire

extremely thick Boiler plate, and thus the fireextremely thick Boiler plate, and thus the fire

tube Boiler are not usually capable oftube Boiler are not usually capable ofproducing steam at high pressure andproducing steam at high pressure and

temperature.temperature.

). Typically efficiency is less than that of). Typically efficiency is less than that ofwater tube Boiler.water tube Boiler.

boiler safe working practice

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