connection of fire water to process line is forbidden as the fire water spec. is difrrent from cooling water ,it may cause corrision in cooler and fire water system is for fire water ring .and it deseign for fire situation .during any fire the fire flow to cooler will be decress.
dear khan
safety relief valve is requirements for vessels containing
hydrocarbon ,SRV should be desigend for fire and blocked outlet valve and cooling water failure condition.
and instalation SRV on hydrocarbon vessels in mandatory.
farshi
two redundunt smoke detector with and system to take acctivate the alarm system will be prevent the error alarm.
the smoke detector should be connected to F&G SYSTEM OF PLANT.
hope you could use,
hi
the place of fire fightining equipment is a safe place ,it should be putted in maximum distance of equal to two times of storage diameter.in nfpa-30 or releated nfpa ,the safe distance have been given.
from explosion anlysis we could find the safe distance ,that monitor could be operated safely.
hi
during blocked outlet of gas line in turbine if we could reduce the input to the system by prediction pressure in the system then we could control pressure in the system.
if during blocked outlet the reducing of input is not possible then we should provide pressre safety valve(relief...
hi.
pls. see the nfpa-30 or nfpa-15 for calculation fire water requirments for cooling of tank by circule fire water around the tank with many holes in tube with delauge valve system .
yours,
farshi
amir farshi
farshia@nioc-ripi.org
http://www.nioc-ripi.org
hi.
the large tank of liquid is not design for releasing gas
for explosion case,the psv line is design for release of high pressure case,and nitrogen pressure control or atmospheric breathing is necessary for tank.
your truly,
farshi
amir farshi
farshia@nioc-ripi.org
http://www.nioc-ripi.org
hi.
we have km3/hr(1000m3/hr) and Mm3/hr(1000*1000 m3/hr)the Bm3/hr may be (1000*1000*1000m3/hr),and it will be correct this unit if the flow rate is so high.
your,
farshi
amir farshi
http://www.nioc-ripi.org
hi mr. bryan
my idea about this subject is like that:
1.if the blocked vavle is in outlet of safety releif valve
during operation it should not closed at any time,if one time you close it, operator should close the inlet valve(stop valve)first,and then there is a standby for safety valve...
hi
if the pressure of the injected condesed is higher than superheat steam then it is possible to used this system.
the injected pressure of condesed should be calculated.
amir farshi
amir farshi
farshia@nioc-ripi.org
http://www.nioc-ripi.org
hi
he should be experiencs in fire protection standard.the standard list as api-500 , iec standard,nfpa and so..
it is offered that sturactual engineering not qualified.
best regards
farshi
hi<br>hazop is systematic study of hazrds in process.the process<br>divided to many system,then it will be study hazop.<br>the deviation from process parameters like flow,temperature and pressure are investigated.the possible of deviation , consequences and protection to be reviewed.<br>thanks a...
