Tuesday, May 4, 2010

TOLUENE FLOATING ON CHEMICAL TANKERS-- CAPT AJIT VADAKAYIL









" TOLUENE SPRAY " MUST NEVER EVER BE DONE ON A CHEMICAL TANKER.  If a sailor is forced to do this by his Captain , (like Methanol spray) , he must refuse .

MOST PARCEL CHEMICAL SAILOR DEATHS HAVE HAPPENED DUE TO " STATIC ELECTRICITY" EXPLOSION.

This method is usually used as a last resort say for Zinc tanks which had difficult insoluble cargoes and must be prepared for WWT as you do not have much of a choice.

Toluene floating can also be used to remove stubborn hydro-carbons, which may have been left from lub oils for example and the next cargo is wall wash. A lub oil/ additive tank is normally 'upgraded' to methanol standard via two or three intermediate cargoes of aromatics.

But the method works if the previous cargo is soluble in toluene!!. Better check it out yourself with a sample in the ships lab.

You must have sufficient toluene on board. Toluene floats in water with a clear interface ( density 0.86) and is insoluble.

The ships course must be altered so that the wind is not blowing into the accommodation.

Since it is the last resort it means that the tank is already clean and toluene floating is doing the final act. The ship must have no list and minimum trim. Rolling must not take place.

Put enough toluene in the empty tank using the ships loading drop so that there will be a 10 cm interface. Make sure the hoses you use are resistant to toluene.

Now introduce sea water into the tank via the sump or drop at 50 deg C. This temp is important to open the pores. Lift it up to the top of tank and then defloat. The water can be pumped out to sea. It is not safe to chase down the water with tankcleaning jets. Too much static is generated. After slow defloating the remaining toluene is transferred to next tank through a filter.

The toluene contact should be about 30 minutes. Then wash off with hot water injected with a surfactant. After the final hot wash , rinse with FW and steam.

The flotation method should only be used after first washing with cleaning chemicals. The method is then very effective, but it is less effective if cargo residues on the tank walls are of any appreciable thickness.

This flotation method might involve hazards as regards static electricity charges in the interface between the two liquids. It is wise to pump slowly in order not to exceed 1 m/s in the filling pipe.

The process should preferably be carried out with the tank inerted.

Toluene being a aromatic shows up in the UV test ashore. So if you do tankcleaning for MEG Fibre Grade using toluene ensure a final job is done with an UV neutral solvent like acetone, MEK , MIBK or Methanol.

PROPERTIES OF TOLUENE:--

A very good cleaning solvent ( aromatic, organic ) .

Static accumulator. If carried in deck tanks make sure the tank is electrically bonded to hull.

It shows up in a UV test.

Usually used in conjunction with steam, to remove heavier HC contamination from inaccessible areas like interior of pipelines.

For a tank size of 1000 cum use 50 litres toluene for steaming. Explosive limit is 1.2 to 7% by vol. if the LEL value ( 3.7 litres / 100 cum )is exceeded then the tank must be inerted. Fill up tank to above heating coils— then add toluene which will evaporate.

Pipelines can be steamed with eductor which sucks touene from a jerry can.

For toluene wiping use chemical resistant sponges.

Toluene is still potent even if it has been used many times over and is black in colour.

Toluene spray is not allowed — explosion due to static. Narcotic effect with severe fatigue , head ache and mental confusion due to central nervous system depression.

Rubber swells and softens. Stow away from Nitric acid.

Colourless liquid with a pleasant aromatic odour.

Flammable

Dangerous fire hazard

Oil like substance

VP/ 30 mm hg at 20C
VD/ 3.14
FP/ 4.4C
AH/ 38 C
TLV/ 100 ppm
SG/ 0.867
BP/ 111C
Marpol Cat/ Y

Becomes unstable when heated

Toluene at 84% by volume, fueled all the turbo Formula 1 teams in the 1980s.

Inhalation of toluene fumes can be intoxicating, but in larger doses nausea-inducing
As toluene has very low water solubility, it cannot exit the body via the normal routes (urine, feces, or sweat). It must be metabolized in order to be excreted.

Toluene wiping of tanks must be done with chemical resistant sponges.



-------CAPT AJIT VADAKAYIL ( 28 YEARS IN COMMAND )

35 comments:

  1. Dear Captain,

    Greetings.
    An offtopic question... Need your guidance.

    Had bought a desi (humped variety) cow a year ago and left it at my cousin's house (in village).
    Later the cow gave birth to a male calf (jersey type).

    It's more than a year now and in villages, the male jersey type cannot be used for tilling aswell
    Now he's insisting me, that he will sell off and purchase a vedic one.

    I'm eager to buy him another humped cow, however I'm against selling the male calf, and do want to be guilty of indirectly getting it culled (as it may endup in abbottoir)

    Should I allow him to sell the male calf ?
    (I'm fine to get another humped cow, with my savings.)

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. YOUR CHOICE

      THE HUMPLESS MALE CALF IS A BURDEN

      Delete
  2. Dear Captain,

    Thank you very much for your reply.

    Grace & Peace,
    JTA

    ReplyDelete
  3. Dear Captain,

    Greetings.
    Need your guidance for my kid and self.

    1. My Kid of 2.4 yrs, has a blocked nose ( and not a running nose).
    This we get to know, when he's asleep. He breathes with his mouth open, and at times when his mouth is closed slowly, can feel the breathing difficulty ( or obstruction) in the nasal passage.
    There's no visible mucous aswell.

    We had shown to Ayurvedic doctor, who everytime says its' because of weather and gives some churna. It's there for more than 2-3 months. I'm clueless.

    The allopathic doctors give some nasal spray, which I'm hesitant to use, because of chemicals.

    Request your guidance.

    2. Is there any mantra, which influences my way of behaving more maturely and only talk what is required.
    I keep on speaking like a lecturer, although it's relevant and the person is interested to hear (this I assume :-|).
    Would want to cut short to limited and required info.

    (I've very less friends and only talk to ppl of similar thought process, whenever I get the chance. I've observed this and feel why do I talk so much, )
    However sometimes)

    Any points to keep in mind, Captain.
    Sorry for the long description.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. hi p6,

      he is having RHINITIS

      http://ajitvadakayil.blogspot.in/2013/07/allergy-overkill-response-of-squeamish.html

      take him to a ENT specialist.

      ensure he sleeps with nasal breathing --doctor will give medicines .

      capt ajit vadakayil
      ..

      Delete
  4. Dear Captain,

    Thank you very much.
    Will take him to a good ENT doctor, as suggested.

    Regards,
    Jagadish TA

    ReplyDelete
  5. Dear Captain,

    Greetings.

    "The day(Gurupurnima) has come, to be grateful towards whom we learn from" and therefore, sincerely bow to you with heartfelt gratitude for all the knowledge and guidance that you imparted me (& all your followers/readers).

    My sincere gratitude to all the divine entities, from whom I learned from in my life.
    Among them you're the giant holding the lamp of knowledge as bright as the SUN, as I came to realise those divine entities through you.

    Wishing you and your family too, a wonderful Gurupurnima day.
    My regards to Ma'm aswell, who is your true inspiration; would be fortunate and it would be a great honour to meet you couple one day and getting your blessings for me and my family.

    Seeking your blessings Captain.

    (Ahhh I remember in one of your blog, which you were referred as the 'Mask of Medusa'.. couldn't get over it without getting stomach pain laughing...
    I remember this, as we had a small chapter when I was in studying 4th or 5th std) :0)

    Grace & Peace,
    JTA

    ReplyDelete
  6. Dear Captain,

    Greetings.

    SOS... Need your help, guidance.

    My kid of 2.4 yrs; wife noticed that he had high temp y'day night although there was no signs of fever at all or any other symptoms for last couple of days ( As he was playing well as usual and didn't notice any fatigueness, dullness).

    Only his forehead has very high temp. Have kept wet cloth.

    Checked the Dengue symptoms list (and high fever/temp was one of them) and I'm afraid.
    (Will take him to doctor tomorrow).

    Need your guidance captain.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. HE WILL BE FINE
      FEVER MEANS BODY IS FIGHTING AN INFECTION

      Delete
  7. Thank you very much Captain.
    Been to Ayurvedic doctor, who said the same, great relief :-)

    (Recently, one of our known acquaintance, whose son was affected by Dengue and he recovered almost from the jaws of death... due to sudden decrease in platelet count).

    Grace & Peace,
    JTA

    ReplyDelete
  8. Dear Captain,

    Greetings.

    SOS, Need your guidance badly.

    Kid had cough and fever recently; Been to doctor (Ayurvedic), who had given powder( to be mixed with honey) and cough syrup.
    Fever subsided, however the cough remained.
    ( The doctor also had mentioned that there's infection in the throat.)

    Someone observed, that the length of epiglottis had increased (we refer as small tongue / @ throat)
    Therefore, tried putting powdered Pepper + Salt (age old solution in our home), so that cough comes down; however situation reversed and cough increased badly.

    Now, due to someone's suggestion, they have put small magnets (size of a urud dal) on the palms. Again cough decreased. however the moment the kid removes the sticker, cough increases.
    He coughs so badly, that it's difficult to see him coughing. Doctor also is clueless.

    Please suggest any traditional household remedies Captain for the cough & increasing weight.
    (He has become thin... such a lively kid.. it's bad to see kids suffer like this)

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. hi p6,

      these are all normal ailments

      take him to a doctor

      he will prescribe a COUGH EXPECTORANT

      after 3 days he will be fine

      capt ajit vadakayil
      ..

      Delete
  9. Dear Captain,

    Thank you very much; will do as suggested.

    Grace & Peace,
    JTA

    ReplyDelete
  10. Dear Captain,

    Greetings, Need your guidance.

    My kid had cough for more than 2 weeks and it had subsided from the last 4-5 days and now again it has increased.

    The moment we give Ayurvedic syrup, it decreases and again after an hour, it starts.
    It's spoiling his sleep aswell and its not that he coughs and stops. Every time he starts coughing, it'll last for 15-20 seconds.

    We are clueless, as to why it isn't stopping.

    Please could you suggest any home remedy and the food to give him, so cough can be controlled.

    Even I've cough, but for sure not to the extent, my kid has :-(

    Looking forward to your guidance, Captain.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. hi p6,

      looks like your sons lungs are inflamed due to allergy

      visit a chest specialist / hospital for tests

      nothing to worry about

      capt ajit vadakayil



      Delete
  11. Dear Captain,

    Thank you for your valuable guidance; will do as as suggested.

    Great relief to see you back in action (after 4 days) :0)

    Grace & Peace,
    Jagadish TA

    ReplyDelete
  12. Dear Captain,

    Greetings.SOS !!!
    Need your guidance.

    Wifey is now approx 7 months..(26-27 weeks) with 2nd kid.

    She has fever on the higher side and body ache, fully tired. She took a basic Ayurvedic tablet (eqlnt to Crocin / Dolo650).
    It subsided for a while; however temp has increased.

    Going to Maternity hospital, where we usually check.

    Anything to keep in mind, Captain.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. nothing to worry about . .

      fever shows her body is fighting an infection . .

      Delete
  13. Dear Captain,

    Thank you very much for your reply.
    I rest my fears and will sleep peacefully.

    She has severe body ache around pelvis and especially at the tail bone.
    So used heat pad around that region which she felt soothing & put to sleep.
    Thanks again Captain :0)

    Grace & Peace,
    JTA

    ReplyDelete
  14. Dear Captain,

    Greetings. SOS again.

    The maternity doctor had advised blood test (y'day) when consulted.
    The report came today and she has tested positive for Dengue. This has left me worried (considering that she's 7 months now).

    Platelet count is 1,97.000.
    The Dengue NS1 Antigen supposed to be less than 9 is 28.

    Was referred to another doctor, who asked to do another blood test for Platelet count. So have given blood for test today aswell.

    Now, wifey tells she feels light pain in her joints (knee & ankle) aswell.

    No idea what to do (except following what the doctor says).
    I'm afraid that the Allopathic medicines they suggest may take toll on her and the growing baby aswell.

    Need your guidance, Captain.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. hi p6,

      http://ajitvadakayil.blogspot.in/2012/08/chikungunya-disease-created-in-lab-capt.html

      papaya leaf juice increases the blood platelet count

      all will be fine

      Delete
  15. Dear Captain,

    Sorry to bother...
    The platelet count from today's report is 161000 (fallen from 197000).

    Getting nervous !!!

    Keeping her hydrated... and going to get an Ayurvedic syrup (Sudarshana kaada) as per Ayurvedic doctor.

    Grace & Peace,
    JTA

    ReplyDelete
  16. Dear Captain,

    Thank you Captain
    The first thing I had in mind was this (papaya leaf juice) as I had read your blog earlier.

    Can this be given, when one is 7 months pregnant ?
    (the Ayurvedic doctor also had the same concern, when asked about this )

    Given that papaya is heat to body, wouldn't it affect the child (27 weeks) in the womb?

    Grace & Peace,
    JTA

    ReplyDelete
  17. Dear Captain,

    Greetings...SOS

    Wifey has been admitted to hospital y'day (platelet count had reduced to 40K).
    Today mrng it was 16K.

    RDP(6 packs) + SDP(1 pack) had been given y'day evening and night.
    Still platelet count had reduced to 16K today morning.

    *Random Donor & Single Donor platelets

    Things became critical, when she started bleeding from nose and gums.
    Again, the same as above RDP-6 pack & SDP-1 pack has been repeated.

    Test due around 5 pm again.

    Doctors are clueless as they don't want to prescribe any medicine given she's 27 weeks.
    That papaya leaf is on everyone's mouth, however unable to proceed due to pregnancy and doctor also isn't sure (Given it's very heat).

    Fortunately friends and family have been very helpful when blood (platelet extraction) was required at critical times.

    Any input from your end would be a beacon of light at this juncture.Thank you.

    Grace& Peace,
    JTA

    ReplyDelete
  18. Dear Captain,

    Wifey on recovery mode..
    Sorry had to bother you on this, as the Doctor's were against the use, because of pregnancy.

    Finally it is the only solution.
    Thank you for your kind guidance at the times of despair.


    Never in my life had run to hospital like this other than during my first kid's delivery... At that time also was cool. But this time, it was total chaos.

    Wishing you and your family a very happy Onam.
    May God bless you and your family with perfect health, happiness and prosperity.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. PAPAYA LEAF JUICE IS HARMLESS-- IT BRINGS UP THE BLOOD PLATELET COUNT IN HOURS.

      YOUR DOCTOR IS USELESS

      YOU COULD HAVE LOST BOTH WIFE AND CHILD .

      Delete
  19. Dear Captain,

    Thank you very much...finally wifey discharged from hospital.

    The hospital (most cases) procedures do not inspire confidence and those mindless(not all), innumerable tests.

    Both mentally (or emotionally ) & physically, was drained and out; Life also came back to me... Was like a dead man walking and running around.

    This situation taught me very valuable lessons, Captain, which you have mentioned across in your comments section / blogs.

    Hopefully you had your sumptuous Onam Sadya by now...(with ssssslluurrping payasa).

    Again with deepest gratitude and sincere bow to you...& Onam greetings.

    Grace & Peace,
    JTA

    ReplyDelete
  20. Dear Captain,

    Greetings. SOS.

    My son(2.5+ yrs) had fever last Saturday and we didn't worry much (as you had mentioned - fever means fighting infection). The Ayurvedic doctor said not to worry and gave a syrup (to increase immunity & not to reduce fever).

    Fever subsided and y'day he ate cooked mushrooms in the afternoon.

    Last night, his body temp had increased (102) and it decreased once and again increased.

    Today morning, his body temp was warm which was above normal (& not high).

    Now he was telling that he's getting pain in wrists and the fingers (feet) and body temp has increased slightly.

    It's giving jitters; Wifey (carrying) is getting tensed as she faced the Dengue last month.

    Should we go with blood tests?

    Request your guidance, Captain.

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. AVOID MUSHROOMS IN FUTURE

      HIS BODY IS FIGHTING AN INFECTION

      YOUR WIFE KNOWS THE SYMPTOMS OF CHIKUNGUNYA HAVING EXPERIENCE IT

      DONT WORRY TOO MUCH

      Delete
  21. Thanks you very much Captain, for your valuable guidance and I rest my fears.

    Was planning to give a teaspoon of papaya leaf juice today evening.

    Every reply of yours provides HOPE, like the light of the Sun (in our Solar system) that removes darkness, in our already VOID lives.

    With sincere gratitude & pranaams /^\.

    Grace & Peace,
    JTA

    ReplyDelete
  22. Dear Captain,

    Greetings.

    My Son(2.8 yrs) was crying in pain when trying to urinate.
    When checked, his penis had swollen.
    Called up child specialist doctor, who suggested a syrup (IMOL - Ibuprofen & paracetamol) to be given 5 ml.

    Reluctantly gave this and also tried to put him in bath tub with hot /warm water and one palm of salt.

    Although he didn't sit in bath tub, just put warm water on his organ. He urinated in small qty.
    He had this earlier and we had tried to slip his foreskin, without much success. There were no issues all these days when he passed urine.

    Any guidance would be helpful.

    Will take him to doctor tmrw. Is operation mandatory in such cases??

    Grace & Peace,
    JTA

    ReplyDelete
    Replies
    1. hi p6,

      Balanitis is the medical term for inflammation of the glans penis, also referred to as the head of the penis or tip of the penis.

      The inflammation often involves the foreskin (prepuce) in uncircumcised children in which case it is known as balanoposthitis. If the foreskin alone is inflamed then it is known as posthitis.

      Balanitis is more common in boys and men who have not been circumcised but does not warrant the need for a circumcision as a preventative measure. Most cases are due to infections and poor personal hygiene is a major risk factor

      The moisture on tip of penis further covered by the foreskin, provides an ideal environment for bacteria and even fungi to grow and thrive within.

      Clean area under foreskin by a jet of water daily

      capt ajit vadakayil
      ..

      Delete
  23. Dear Captain,

    Thank you very much for your reply, at this hour of the day.
    Will clean the foreskin daily, as suggested.

    Hygiene is not a concern as usually kid is given bath and the places he keeps running/ playing around is also hygienic.

    When I checked ggle images for the conditions mentioned above, it's the swelling around glans penis and behind.

    I certainly do not want him to get circumsized (having read your blog on circumcision and how important it is).

    With sincere gratitude and pranaams to you & Ma'm.

    Grace & Peace,
    JTA

    ReplyDelete