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AJIT VADAKAYIL
TUESDAY, SEPTEMBER 20, 2011
CHEMICAL TANKER TYPES - CAPT AJIT VADAKAYIL
IMO SHIP TYPES- CHEMICAL TANKERS
All 3 types are meant to carry chapter 17 cargoes of IBC code.
Type I ships must be able to survive assumed damage anywhere in their length.
Cargo tanks for the most dangerous products should be located outside the extent
of the assumed damage and at least 760mm from the ship's shell.
IMO type 1, 2 and 3. Other cargoes, which present a lesser hazard may be carried
in tanks next to the hull- ( incl diluted slops after tank washings ) See
layout below--
Some of the chemicals carried on type one ships are Chlorosulphonic acid,
Dodecyl phenol, Phosphorous yellow/ white, Tricresyl Phosphate (>1%
ortho-isomer), Trixylyl Phosphate.
Maximum tank size is 1250 M3.
Double side width B/5 or 11.5 mtrs which ever is less.
DB depth B/15 or 6 mtrs at centre line, but not < 760mm .
Auto ignition temperature of cargoes <65 deg C.
Explosive range >50% by volume in air.
Type 1 offers highest limit of containment.
Type II ships, if more than 150m in length, must be able to survive assumed
damage anywhere in their length; if less than 150m, the ship should survive
assumed damage anywhere except when it involves either of the bulkheads bounding
machinery spaces located aft. Tanks for Type II cargoes should be located at
least 760mm from the ship's shell and outside the extent of assumed grounding
damage.
Maximum tank size is 3000 M3.
Capable of stripping tanks <100 litres.
Auto ignition temp of cargoes <200 deg C.
Explosive range >40% by volume in air.
Type III ships, if more than 125m in length, should be capable of surviving
assumed damage anywhere in their length except when it involves either of the
bulkheads bounding the machinery space. If less than 125m in length, they
should be capable of surviving damage anywhere unless it involves machinery
spaces. There is no special requirement for cargo tank location. No limit for
size of tank.
Capable of stripping tanks <300 litres with tolerance of 50 litres.
Length > 125 m but < 225 m damage anywhere in length except including ER
bulkheads
Length <125 m damage anywhere in length except machinery space
After 1 January 2007 vegetable oils have to be carried in chemical tankers
complying with the revised IBC Code as a Ship Type-2 (double hull) with COF as
Cat Y.
-------CAPT AJIT VADAKAYIL
(29 YEARS IN COMMAND )
Posted by Capt. Ajit Vadakayil at 10:37:00 PM
26 COMMENTS:
1. Mahmoud RedaFebruary 25, 2012 at 5:41 PM
hi Capt.
I have question about the stowage rates of chemical cargoes
for sure it will have wide range between all chemical cargoes transported
by sea
can you tell me what is the minimum and maximum stowage rate of chemicals
transported by sea ?
thanks in advance
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2. UnknownSeptember 30, 2012 at 9:25 AM
Hello Capt.
I have one question how are the chemicals categorized
on type 1,or type2 or type 3 chemical tankers. I mean chap 17 of Ibc code
include many chemicals then on what bases it is decided which type of
chemicals to be carried by type 1,2 or 3.
pls give few examples of each type of chemicals
Thank you
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3. Capt. Ajit VadakayilSeptember 30, 2012 at 2:02 PM
hi deepak,
i have posted what you want already--long ago..
check it out.
off hand i can remember you can punch into google search
CHEMICAL HAZARDS ON CHEMICAL TANKERS- VADAKAYIL.
capt ajit vadakayil
..
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4. DevaJune 20, 2013 at 10:37 AM
hello captain what is COW operation in oil tankers?
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Capt. Ajit VadakayilJune 20, 2013 at 12:17 PM
hi deva,
when we were young cadets and the ship had to go to dry dock for repairs,
we washed tanks with water.
there used to be a huge amount of sludge ( knee deep sometimes ) at the
bottom of the tanks, which we demucked manually and threw it into the sea.
you cant do that any more-- as pollution regulations are strict.
instead of using water we use CRUDE OIL itself to wash the tanks with fixed
machines.
the solvent effect of oil makes the tanks perfectly clean. LIKE CUTS LIKE
principle.
after COW, and drying the tanks, we can enter the tanks with uniform -- it
is that clean.
of course we give a cursory water wash so that hot work can be done.
capt ajit vadakayil
..
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5. azio1234August 27, 2014 at 5:27 PM
Good day Captain, I just wanna ask what are the contents of chapter 17
cargoes because im going to report in my class. Thank you
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Capt. Ajit VadakayilAugust 27, 2014 at 6:36 PM
hi a1234,
i do NOT take such questions.
capt ajit vadakayil
..
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6. daisyOctober 15, 2014 at 6:40 AM
Hello captain.
Can you help me to share links related to evolution of chemical tankers?
Because I cant find any that explain briefly about the evolution of
chemical tankers.
Thank you in advance!
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7. NAVALOPEDIA by RAKESHDecember 14, 2015 at 11:33 PM
HELLO SIR,
can u help me about how the palm oil is carried and the extra system used
in palm oil tanker?
ReplyDelete
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Capt. Ajit VadakayilDecember 14, 2015 at 11:45 PM
http://ajitvadakayil.blogspot.in/2010/11/vegetable-oils-and-fats-on-chemical.html
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8. UnknownJanuary 21, 2016 at 9:10 PM
Sir kindly advise on the certificate of fitness and why it is not issued
for product tankers and crude oil tankers?
ReplyDelete
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Capt. Ajit VadakayilJanuary 21, 2016 at 9:13 PM
http://ajitvadakayil.blogspot.in/2010/12/certificate-of-fitness-on-chemical.html
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9. Suraj SinghJanuary 25, 2016 at 9:43 PM
Hello sir,
Would like to enquire regarding what all Tanker Endorsements(DCEs) are
required for MT ALPINE LOYALTY?
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10. UnknownJanuary 27, 2016 at 6:23 PM
dear Sir... Wats the name of the ibc code 17..,?
ReplyDelete
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Capt. Ajit VadakayilJanuary 27, 2016 at 6:46 PM
http://ajitvadakayil.blogspot.in/2010/12/certificate-of-fitness-on-chemical.html
http://ajitvadakayil.blogspot.in/2010/06/marpol-rules-for-annex-2-chemical_6733.html
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11. UnknownJanuary 28, 2016 at 1:29 PM
Thank you sir...
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12. UnknownOctober 20, 2016 at 6:55 PM
Sir, Why there is limited quantity in type 1 and type 2 chem tanker? Why
cant we carry more?
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13. UnknownNovember 3, 2016 at 2:35 PM
sir with new regulations can their be single hull chemical tankers(type 3)
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14. ZEO ĐẠI BÀNGMay 9, 2017 at 8:40 AM
Sir, IS the Type 1 Chemical tanker can carried out all type of cargo in
Chap 17 ibc code? Pls advice
ReplyDelete
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Capt. Ajit VadakayilMay 9, 2017 at 9:02 AM
In general, ships carrying chemicals in bulk are classed into three types:
Type 1
Type 1 ship is a chemical tanker intended to transport Chapter 17 of the
IBC Code products with very severe environmental and safety hazards which
require maximum preventive measures to preclude an escape of such cargo.
Type
Type 2 ship is a chemical tanker intended to transport Chapter 17 of the
IBC Code products with appreciably severe environmental and safety hazards
which require significant preventive measures to preclude an escape of such
cargo.
Type 3
Type 3 ship is a chemical tanker intended to transport Chapter 17 of the
IBC Code products with sufficiently severe environmental and safety hazards
which require a moderate degree of containment to increase survival
capability in a damaged condition.
Most chemical tankers are IMO 2 and 3 rated, since the volume of IMO 1
cargoes is very limited.
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love love and only love..!July 3, 2019 at 10:33 PM
Can I carry cat z or Os cargoes in type 1 ship.?
Can I keep NLS AND COF TOGETHER?
as for z n os I need NLS CERTIFICATE
AND FOR X N Y I NEED COF CERTIFICATE
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15. Capt. Ajit VadakayilMay 9, 2017 at 9:04 AM
http://timesofindia.indiatimes.com/entertainment/hindi/bollywood/news/Kajol-gets-a-surgery-to-look-fair-Kajol-looks-very-fair-Kajol-to-replace-Yami-Gautam/articleshow/35015252.cms
kajol's nose looks as if god has thrown a lump of clay on her face
just shows STAR KIDS can get what they want
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16. Capt. Ajit VadakayilMay 9, 2017 at 9:07 AM
http://timesofindia.indiatimes.com/india/end-defensive-policy-go-all-out-against-reds-rajnath-singh/articleshow/58584543.cms
######## DESH DROHI NAXAL THINKERS ###### WE THE PEOPLE ARE ANGRY … ARE OUR
BRAVE JAWANS ARE LESSER HUMANS THAN NAXALS ?... WHO ARE THESE NAXALS ?.....
TRAITORS HOLDING FOREIGN GUNS AGAINST BHARATMATA ….. OUR CONSTITUTION DOES
NOT PROTECT THEM….. INCARCERATE EVERY NAXAL THINKER AND SUPPORTER -- SOME
ARE IN BENAMI MEDIA, COLLEGIUM JUDICIARY, NCW, NCM, NHRAC , RAJYA SABHA ,
FOREIGN FUNDED TROJAN HORSE NGOs , COMMIE PROFESSORS IN JNU/ JU/ DU/ TISS/
FTII etc-- …. ALL ARE AFRAID OF JEW NOAM CHOMSKY --WHY ?...... IF MODI
WANTS A LIST OF NAXAL THINKERS AND SUPPORTERS I CAN GIVE IT TO HIM….. MOST
NAXAL TRIBALS ARE CONVERTED CHRISTIANS--WHO HAVE BEEN ASKED TO RETAIN THEIR
ORIGINAL NAMES…. DO NOT KILL ANY NAXAL WHO HAS BEEN DEPRIVED OF CLEAN WATER
TO DRINK …… MODI IS THE WEAKEST PM WE EVER HAD … … APCO BRANDED MODI JUST
WANTS FAALTHU GOOD REPORTS IN WHITE JEWs MEDIA AND A NOBEL PRIZE…….. OUR
ARMY OF LIONS IS LED BY SHEEP............THEIR MORALE IS AT LOWEST
EBB....... COLLEGIUM JUDICIARY ( NOT ALLOWED BY CONSTITUTION ) NCM, NCW,
NHRC WAS STARTED IN INDIA BY BY BILDERBERG CLUB….. OUR MEDIA IS DESH DROHI-
CONTROLLED BY WHITE JEWS…… Go0gle for the following blogposts below ---
................................................. JNU , DEN OF ANTI
NATIONALS AND COMMUNIST CRIMINALS VADAKAYIL
........................................ and
............................................... COMMUNIST , MAOIST ,
NAXALITE MOVEMENTS IN INDIA EXHUMED VADAKAYIL
...................................... and
................................................. BAUXITE MINING, NAXALITE
MENACE, JOSHUA CONSPIRACY VADAKAYIL
........................................ capt ajit vadakayil .. capt ajit
vadakayil ..
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17. the phoenixJune 20, 2017 at 4:09 PM
Hi Sir,
Thank You very much for your blogs which are very informative and many of
these information we don't get nowhere else, not from onboard seniors
neither from any institutes. I have seen a couple of chief officers
referring your notes on tank cleaning.
my humble doubt is..
why do they call it oil/chemical tanker and product/chemical tanker ?
Is there any significant differences between both ?
Which category will a vessel fall into which can carry both annex-I
products and annex-II cargoes(i.e.having seperate annex1 and annex2
discharge systems) ?
...sumesh...
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Capt. Ajit VadakayilJune 20, 2017 at 6:17 PM
http://ajitvadakayil.blogspot.in/2010/11/annex-1-closed-cycle-wash-on-chemical.html
http://ajitvadakayil.blogspot.in/2010/12/annex1-oil-products-on-stainless-steel.html
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18. UnknownDecember 26, 2017 at 11:09 PM
What is the requirement for carriage of chemical suits on chemical
tankers??
ReplyDelete
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ABOUT ME
Capt. Ajit Vadakayil Been in command of chemical tankers (mainly) for more than
6640 days, spread over 30 years ( a world record! ) . The chemical contents are
patented . This blog site will transform your mind . You yourself, are the
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