STATUTORY REQUIREMENTS FOR VESSELS UNDER PRESSURE: 1. Boiler Boilers s ( Fired Fired vessel vessels s !overed "# I$di%$ "oiler %&' 1)*: E+'e$ds 'o ,-ole o I$di%. Boiler is % &losed vessel e+&eedi$/ )).0 l' &%2%&i'# 3sed or /e$er%'i$/ s'e%4. ). Press3re Press3re vessels vessels ( 3$ired 3$ired i$ 2l%$'s 2l%$'s : !overed !overed 3$der 3$der M%-%r%s'r M%-%r%s'r% % %&'or# %&' 3$der r3le 5. *. S'%'i& S'%'i& %$d 4o"ile 4o"ile 2ress3re(3 2ress3re(3$ired $ired vessels: vessels: !overs !overs s'or%/e s'or%/e %$d 'r%$s2or' o &o42ressed /%ses . U$der E+2losives %&'( &-ie &o$'roller o e+2losives6 N%/23r 7. 8%s &#li$der &#li$ders: s: !overed !overed 3$der 3$der /%s &#li$der &#li$der r3les9 r3les9 11 11 or &o42ressed &o42ressed /%ses. 8%s &#li$der is % &losed 4e'%l &o$'%i$er less '-%$ 1;;; l's.
STATI! AND MOBILE PRESSURE VESSELS (UNFIREDRULES 11 1. U$der U$der I$di%$ e+2losiv e+2losives es %&' &e$'r%l &e$'r%l /over$4e$' /over$4e$' or43l%'e or43l%'es s r3les or %ll vessels s'ori$/ < 'r%$s2or'i$/ &o42ressed /%ses. ). !o42ressed !o42ressed /%ses: /%ses: %$# %$# 2er4%$e$' 2er4%$e$' /%s9 li=3ei li=3ei%"le %"le /%s9 /%s9 /%s dissolved dissolved i$ li=3id 3$der 2ress3re or /%s 4i+'3re i$ &losed &o$di'io$ ex exer ercis cises es pressure e+&eedi$/ o$e %'4os2-eres (/%3/e %' 4%+ ,or>i$/ 'e42er%'3re %$d i$&l3de ?#dro/e$ l3oride .
working temperature shall be considered 55 dig centigrade ( I$ &%se o vessels ,i'- o3' i$s3l%'io$ or reri/er%'io$ max
Does $o' &over 1vessels or4i$/ 2%r' o 2ro&ess 2l%$'( i$ ,-i&- 3$i' 2ro&ess or 3$i' o2er%'io$ is &%rried o3'. )Vessel ,-i&- &o$'%i$9 %s % 2ro&ess re=3ire4e$' % &o42ressed /%s re&eived ro4 %$d &o$s34ed i$ '-e s%4e 2l%$'9 2rovided '-%' ,%'er
&%2%&i'# o s-%ll "e s3&- '-%' /%s s'ored '-erei$ %' 4%+ ,or>i$/ 2ress3re s-%ll $o' e+&eed '-e re=3ire4e$' or eedi$/ '-e &o$s34i$/ 2oi$'s(s or % 2eriod $o' e+&eedi$/ 15 -o3rs %' desi/$ed lo, r%'e. *. !o42e'e$' 2erso$ @or/%$i%'io$ is re&o/$ied "# &-ie &o$'roller o e+2losives or &%rr#i$/ o3' 'es's9 e+%4i$%'io$9 i$s2e&'io$ %$d &er'ii&%'io$. 7. All vessels 'o "e fabricated as per code IS 2825 or
any other code
as approved by CCO . No i42or' o vessel ,i'- o3'
2rior
2er4issio$ o &-ie &o$'roller. . Re2%irs9 %ddi'io$s9 %l'er%'io$s %22roved "# !!OE s-%ll "e &%rried o3' i$ '-e 4%$$er < "# 2r%&'i&e %&&e2'%"le 3$der desi/$ &ode % s 2er !!OE. Provided '-%' $o'-i$/ i$ '-is r3le s-%ll %22l# 'o re2l%&e4e$' o %$# o '-e i'4e$'s o '-e vessel ,-i&- does $o' i$volve -e%'i$/. 5. P3r/i$/ "# i$er' or s%4e /%s or ,-i&- vessel is 'o "e 3sed "eore s'%r' illi$/. 0. !esign pressure to be not less than "# vapour pressure of the gas at 55 dig (i$ &%se o li=3ii%"le /%ses ) Provided i '-e vessel is i$s3l%'ed 9 v%2or 2ress3re o '-e /%s i$ '-e vessel &orres2o$ds 'o '-e 4%+ 'e42 '-%' is li>el# 'o "e %''%i$ed "# '-e /%s i$ '-e vessel. * develo2ed 2ress3re o /%s i$ '-e vessel %' di/ ( or 2er4%$e$' /%ses . I$s3l%'io$ %s 2er %22rov%l "# !!OE. $% &illing to be such that vessel should not be li'uid(full due to expansion with the raise of temp to 55 dig%)as per approval of CCO Fi''i$/s: PRV9 dr%i$9 &o$'e$'s /%3/e or 4%+ level i$di&%'or 9 2ress3re /%3/e %$d 4e%$s o 4e%s3ri$/ 'e42er%'3re o &o$'e$'s. 1;. All s'%'i& vessels s-%ll $o' -%ve 4ore '-%$ o$e &o$$e&'io$ %' "o''o4 or i$le' or o3' le' %2%r' ro4 dr%i$. Dr%i$ i 2rovided 'o "e e+'e$ded "e#o$d s-%do, o '%$> %$d 2rovided ,i'- ',o s-3' o v%lves. 1;. *o be fitted with two or more pressure relieving devices (s2ri$/ lo%ded $o' ,ei/-' lo%ded relie v%lvesRelie v%lves s-%ll "e so desi/$ed '-%' '-e# &%$ $o' "e lo%ded "e#o$d se' 2ress3re %$d desi/$ 'o "e s3&- '-%' '-e "re%>%/e o %$# 2%r' ,ill $o' o"s'r3&' ree dis&-%r/e o li=3id 3$der 2ress3re. 11. SRVs s-%ll "e set to start discharge %' % 2ress3re not exceeding ""+, of design pressure o vessel %$d s-%ll -%ve 'o'%l relievi$/ &%2%&i'# s3i&ie$' 'o 2reve$' 4%+ 2ress3re i$ '-e vessel o 4ore '-%$ 1); o desi/$ 2ress3re. 1). SRVs 'o "e 4%r>ed 1 dis&-%r/e r%'e i$ &3 4 @4' %' 1 di/ !. "-% Shut off valve between vessel and S./ to be provided for each% !ischarge to be extended to at least 2 mt above tank vessel% 0 In case of mobile vessels it should not be there#%
"1% All li=3id < v%2o3r &o$$e&'io$s e+&e2' SRV %$d s4%ll dr%i$s s-%ll -%ve emergency shut off valve such as excess flow valve automatically operated valve or remotely operated valve % 1 S./s to be tested 3 certified in every year by competent person under rule"8%0same for static as well as mobile vessels# "5% 4ll vessels to be I 3 hydraulically tested in periods not more than five years% 0 in case of corrosive or toxic gases in two years # under rule "$. 15. All vessels 'o "e e$'irel# %"ove /ro3$d level. No vessel 'o "e i$s'%lled ,i'-i$ "o3$ded %re% o 2e'role34 or o'-er l%44%"le li=3id s'or%/es. "% 6i'uefied petroleum gasses shall not be filled while engine of tanker is running% 1. No ele&'ri&%l ,ire s-%ll 2%ss over %$# s'or%/e vessel. A$d %ll ele&'ri& ,iri$/ 'o "e i$s3l%'ed "# %22roved '#2e %$d 4e&-%$i&%ll# &o$'i$3o3s '-ro3/-o3' %$d ee&'ivel# e%r'-ed %,%# ro4 vessel. "$% V%lves %$d %&&essories s-%ll "e 4o3$'ed %$d 2ro'e&'ed 'o 2reve$' %&&ide$'%l r32'3re. 7rittle materials like CI not to be used% );. !er'ii&%'e o s%e'# 'o "e o"'%i$ed ro4 &o42e'e$' 2erso$ 3$der r3le 7* "eore 23''i$/ 'o 3se %$# 4o"ile '%$>er or %'er %$# re2%irs@4odii&%'io$s@%l'er%'io$s o$ vessel9 &-%ssis &%rried o3' ,i'2er4issio$ o !!OE. 2"% .oad worthiness certificate under rule 1102# to be obtained from competent person every six months for mobile vessels% )). Li&e$se or vessels 'o "e /o' re$e,ed "# !!OE ever# '-ree #e%rs. )*. 4ll hoses for loading)unloading shall be designed to with stand not less than 1 times max operating pressure 3 electrically continuous.
PRESSURE VESSELS UNDER MA?ARASTRA FA!TORIES A!T UNDER RULE 5. Press3re vessels@2ress3re 2l%$'s: Press3re vessels %lo$/ ,i'- i's
operated at a pressure greater than atmospheric pressure% 2i2i$/9i''i$/s
ach plant to be fitted with "#Suitable safety valve or other effective device conveniently located to ensure maximum safe working pressure of the vessel shall not be exceeded at any time% 2# Suitable pressure gauge with dial range not less than "%5 times and not exceeding twice the maximum safe working pressure% 4nd marked with distinct red mark at aximum safe working pressure% -# Suitable stop valve by which 9r% vessel isolated from other vessels or from other source of supply of pressure% 1# Suitable nipple and globe valve connected for the exclusive purpose of attaching test gauge for checking accuracy%
5# Suitable drain valve or plug at the lowest part to ensure effective draining% 4ll these are to be mounted at a height not more than "%5 meters from working level%
9ressure plant not constructed to with stand the maximum possible working pressure at the source of supply or the maximum which can be obtained in the pipe connecting to the vessel with any other source of supply shall be fitted with suitable reducing valve or suitable automatic device
to prevent exceeding S:9% In case of ;acketed 0 and limpeted# vessels heat input in the ;acket shall be controlled by suitable device so as not to allow S:9 being exceeded% 4ll pressure vessels to be< xternally examined within a period of six months= < Internally examined within twelve months= < >ydraulically tested within 1 years%
If by reason of construction I is not possible it may be replaced by >* in two years and thorough systematic non( destructive testing like ultrasonic thickness test at least in a period of 1 years % aximun safe working pressure and date of last examination shall be plainly marked on every pressure vessel% anager to maintain a register of pressure plants showing "# ?ame and make of pressure vessel% 2# Identification mark -# !ate of taking to first use 1# .ef no and date of report examination by competent person% CO..OSI/ *4?@S CO/.! A?!. 4>4.4S*.4 &4C*O.B .A6S Sec II For s'or%/e %$d -%$dli$/ o &orrosive s3"s'%$&es. All s'or%/e '%$>s -%vi$/ &%2%&i'# 4ore '-%$ ',e$'# li'ers i$&l3di$/ 2i2i$/9 v%lves %$d &%rr#i$/ S3l3ri& %&id9 Ni'ri& %&id9 ?!L9 ?F9 &%r"oli& %&id9 2-os2-ori& %&id9
Li=3id &-lori$e9 li=3id "ro4i$e9 A44o$i%9 %$-#dro3s li=3id %44o$i%9 NAO?9 CO? Or 4i+'3re o '-e %"ove. 4ll corrosive vessels to examined thoroughly every year to find out defects and defects to be rectified%
