ACRYLONITRILE are high value and require sophisticated handling for safety, health and loss prevention reasons. They need careful consideration prior loading , tank coating compatibility, cross compatibility with other cargoes carried, environmental controls if required (inerting).

Product characteristics: Product safety data sheets may be available from various sources. For safety preparation, until the specific product safety data sheet can be obtained, Chemical Data Guide for Bulk Shipment by Water (U.S. DoT), should be used. Concerning the IBC/BCH code (respective 16.2/5.2) the Master should request the specific product safety data sheet before commencement of loading. The safety data sheet posted must be in a language understood by ship's Officers and Crew (English).

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Regulatory requirements / ACRYLONITRILE

Acrylonitrile is an unstable product when not inhibited. Acrylonitrile is regulated for bulk transportation by the IMO, BCH and IBC codes. Following is the summary of the codes' minimum requirements:

• UN number: 1093
• Pollution category : Y
• Hazards Safety and pollution hazard : (S /P)
• Ship type : 2
• Tank type : Integral gravity tank
• Tank vents :Controlled venting
• Tank Environment : No requirements
• Electrical equipment : Special requirements, T1,II B,
• Gauging : Closed
• Vapour Detection : Flammable and toxic vapours
• Fire Protection : Alcohol resistant foam

Material of construction Aluminium, magnesium, zinc, galvanized steel and lithium should not come in contact with Acrylonitrile. Materials normally used in electrical apparatus, such as copper, aluminium and insulation, should as far as practicable be protected to prevent contact with the vapour of Acrylonitrile.

Special Requirements See IBC Code, 15.12, 15.13, 15.17, 15,19 and the BCH Code, Chapter IV, 4.9, 4.10, 4.12.3, 4.13.1, 4.14, 4.17

Respiratory and eye protection Individual units required for emergency escape purpose.


Special arrangements / ACRYLONTRILE Safety Alert : Chemical incompatibility - Acrylonitrile / Caustic Soda Solution

Recent laboratory tests indicated a potentially hazardous reaction between acrylonitrile (group 15) and caustic soda solution (group 5). This combination is considered compatible for adjacent stowage by current regulations (46 CFR part 150).While a review of the data used to construct the compatibility part in these regulations showed no reactivity between these two chemicals at test temperatures up to 100 degrees C, the new data indicates that a delayed reaction may occur, which generates large amounts of heat if the mixture is vigorously stirred. The regulations are being amended to reflect this incompatibility. Meanwhile...

Do Not Load ACRYLONITRILE and CAUSTIC SODA SOLUTION in Adjacent Tanks.

If you or your company should experience any reactivity with these or similar products, please notify:

• Hazardous Materials Branch (MTH-1)
• Marine Technical and Hazardous Materials Division
• Office of Marine Safety, Security and Environmental Protection
• Coast Guard Headquarters 2100 Second Street, S.W. Washington, D.C. 20593-0001

Slop disposal and arrangements

The slops are to be disposed according to:

1. Regulations for control of pollution by noxious liquid substances in bulk, IMO, MARPOL Annex II and,

2. When it is necessary to dispose slops to shore reception facilities, the ship must report estimated quantities to the Ship Operator and the local agent. Before mixing compatible slop residues or slops and cleaning agents consult the local agent.


Related information - ACRYLONITRILE

Removal of Acrylonitrile from Drip Trays : It is important to stress the importance of personnel and environment safety when handling Acrylonitrile as cargo and waste. Any product that may enter drip trays when disconnecting the cargo hoses must be transferred to a slop tank or a toxic waste container by safe methods. Personnel must wear rubber gloves, face shield, plastic coated clothing and wear self-contained breathing apparatus. Small spills may be flushed away with water.


Related info:

1. Loading, discharging & care of Phenol - Safety guideline
   PHENOL is carried at sea in a generally pure state. As a result, it has a high freezing point of approximately 40~ 41deg C. PHENOL is also extremely dangerous when it comes into contact with the eyes or skin and can be fatal.


2. Hazards of Phenol - safe handling of Phenol on chemical tankers.
   Phenol must be carried at temperatures within charterers instructions, typically between +50 and + 60 degrees C. Heating instructions of the Shipper or Owners must be followed to avoid protests and delays in the port of discharge. Overheating can damage this cargo. A full cargo heating log must be maintained.


3. Handling benzene & methanol safety precautions
   Benzene is known as a strong carcinogen and known to cause leukaemia. When handling cargoes with more than Benzene concentration of 0.5%, the Master is to ensure that all personnel involved are aware of the long term hazards.


4. Personal protective equipments for carcinogens & cyanide-like cargoes onboard chemical tankers
   A carcinogen is a substance that may cause cancer by contact or by inhalation. It is therefore essential that the highest safety precautions are taken when handling these cargoes. Access to deck areas must be restricted to duty personnel only. All accommodation doors and ports must be closed and ventilation put on recirculation. Any member of crews involved in cargo operations must wear chemical protective suits and breathing apparatus


5. Handling ACRYLONITRILE safety precautions
   ACRYLONITRILE are high value and require sophisticated handling for safety, health and loss prevention reasons. They need careful consideration prior loading , tank coating compatibility, cross compatibility with other cargoes carried, environmental controls if required (inerting).


6. handling ISOCYANATES safety precautions
   Product safety data sheets may be available from various sources. For safety preparation, until the specific product safety data sheet can be obtained, Chemical Data Guide for Bulk Shipment by Water (U.S. DoT), should be used.


7. Loading, carrying & discharging of Sulphuric acid - regulatory requirements & special handling methods
   IBC code compatibility chart strictly prohibits water in adjacent compartment to Sulphuric acid as you are aware if both come in contact with each other will generate a violent reaction. It is therefore recommended that the during loading of sulphuric acid adjacent ballast tanks to be always stripped dry to the maximum efficiency of the deballasting equipment used.

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