8/12/2019 Distiller Questionnaire

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Questionnaire OnMulti Stage Flash Distiller

 Name: -

Select the right answer.

1. What are the main consumers of sea water supply system?

a) SW spray to traveling screens

 !) SW to "emin. an# $hlorination plantc) SW to %istillers

#) SW to %ump con#ensers

e) SW to &ower 'slan#.(. he parts of the plant not fe# !y SW as cooling me#ium are

a) *vaporator 

 !) +acuum systemc) $on#ensate system

,. SW recirculation pump remains in service #uringa) Winter season

 !) Summer seasonc) SW temperature ($.

/. 0n increase in SW flow through reect section causes

a) oo low !rine temperature in the last stage !) 2igh con#uctivity of #istillate

c) %emisters cho3ing 4 #amage.

. he main factor to a#ust the re5uire# flow through heat reect section isa) 6ottom !rine temperature

 !) SW inlet temperature

c) SW inlet pressure.7. he amount of water re-circulate# !y recirc.pump is controlle# !y

a) 8%&/900191

 !) 8%&900991

c) 8%&900191. SW pressure at heat reect inlet is measure# !y loop &'0 8%&(9$&991 that gives

a) 'n#ication !oth in fiel# an# in %$S

 !) 0larmc) "ecor#ing.

;. SW temperature at heat reect outlet is measure# !y loop '" 8%&/9$991that

gives

a) 'n#ication in %$S !) 0larm in %$S

c) "ecor#ing in %$S.

<. &ressure at heat reect outlet is measure# !y loop &' 8%&/9$&991tht gives a) 0larm in %$S

 !) "ecor#ing an# in#ication in %$S.

19. &art of the SW coming from the heat reect outlet is sent toa) *vaporator stage ((

1

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 !) %eaerator as ma3e up

c) SW recirc. pump as ma3e up.

11. he ma3e up flow rate is a#uste# !y the 8%&900191 to maintaina) Stage (( level

 !) Salinity of the recycle !rine

c) SW flow to vacuum system.1(. Normally the ma3e up flow is e5ual to

a) hree times the #istillate flow

 !) %ifference of #rain flow from total SW to heat reect flowc) %ifference of the sum of #rain an# recycle flow from total SW flow to

heat reect section.

1,. he ma3e up flow rate signal a#usts the #osing rate of

a) 0ntiscale !) So#ium sulphite

c) 0nti foam.

1/. =ow SW flow to evaporator along with high pressure is an in#ication of

a) %rain flow control v4v malfunctioning !) 2eavy fouling of heat reect section>s tu!es

c) 'ncorrect operation of flow control loop.1. Which con#ition of the process to !e chec3e# if !rine !low #own pump #ischarge

 pressure starts increasing?

17. What two most important con#itions #o !rine !low #own pumps maintain?

1. Which one is at higher pressure

a) *vaporator stage ((

 !) +ent con#enserc) 1st stage con#enser.

1;. Why the filtere# !rine is supplie# to the shaft seals of the !rine !low #own

 pumps.

"* 4@0=S*

1<. 0nti foam solution is inecte# into thea) Aa3e up line

 !) %eaerator

c) SW reect outlet line.(9. 0nti foam #osing flow alarm will not initiate if

a) &ump #ischarge v4v is lea3ing

 !) &ump suction filter is !loc3e#c) Suction or #elivery line is !loc3e#

#) @low meter !y pass v4v not fully shut.

(