NOVA 4G OSD, Oil Spill Dispersant is a Water Based Non-Flammable compound free from Hydrocarbons & completely biodegradable. Our NOVA 4G OSD is tested in both, concentrate & dilute form and approved by The National Institute of Oceanography (NIO), Goa CSIR for Oil Spill Clean-up Operations on Indian Waters as per 2009 ICG guidelines and has been put in the List of approved OSD by the Indian Coast Guard H.Q New Delhi.

Colour	Colourless to light Amber liquid
Solubility	Completely Soluble in Sea Water & Fresh Water
Flash Point	Product is Non-Flammable
Biodegradability	Product is Completely Biodegradable
Specific gravity	0.95 to 1.03 ( Typical 1.01)
Cloud Point deg Celcius	-7℃
Viscosity	70 Cst @20℃
Ph	6.00 to 8.00
Prohibited Ingredients	Does not contain Chlorinated Hydrocarbons, Benzene, CTC, Cresols,Phenols, Caustic Alkali & Free Mineral Acids
Toxicity	Non-Toxic
Shelf Life	5 Years from date of Manufacture

Introduction :

Petroleum and their products are leading contaminants due to their global production, transport use, disposal & accidental spillage. Since oil is a complex mixture of hydrocarbons, their ecological impact will depend on its source, amount, type and preventing environmental conditions at the time of spill. The oil tanker traffic in close proximity of the Indian coast and offshore petroleum exploration platforms make our region a high risk area. In view of this there is always need to prevent, control and combat oil spills. One of the most practical and effective response to tackle oil spill is by using Chemical dispersants.

Chemical Dispersant Application :

NOVA 4G OSD contains surfactant and a stabilizer which is quick in removal of oil on surface by converting it into fine oil in water emulsion, which is rapidly distributed through the water column through agitation and mixing. This is further diluted rapidly by sea water turbulence and its concentration is reduced soon to background levels. NOVA 4G OSD objective is chemical dispersion of spilled oil and expose it to a larger area of attack by marine bacteria. This is achieved when surface oil breaks into droplets due to OSD addition which disposes into vertical water column of sea. The smaller the droplet size the less chance of oil resurfacing and more surface area of the dispersed droplet also enhances and its biodegradation by marine bacteria and greater its anti-cohesive properties.

Feeding & Dosages

Aerial Spraying :

Aircraft provide the most rapid method of applying dispersants to an oil spill. NOVA 4G OSD is used undiluted for aerial spraying. A typical treatment rate is 10 to 50ltrs per acre or DOR ( Dispersant to Oil Ratio) of 1 : 50 to 1 : 20. Normally oil thickness is 100 to 200microns and it would spread 1 to 2 tons of oil per hectre (1 hectre = 2.471acre). Typical application altitudes will depend on the application equipment, aircraft & weather. Careful selection of spray nozzles is critical to achieve desired dose levels since smaller droplets size will make the sprayed OSD miss the targeted oil due to wind & aircraft motion. It is for this reason that while using by aerial method, undiluted NOVA 4G OSD as Type 3 form must be used.

Boat Spraying :

NOVA 4G OSD can also be applied by workboats equipped with spray booms mounted ahead of the bow or as far ahead as possible. Spray systems which apply dispersant neat & undiluted are preferred however if this is not practical, water dilutable systems which provide a 10% dispersant concentration with either Sea water or fresh water should be used. The mixture of dispersant and water is then discharged through sprayer having several nozzles. NOVA 4G OSD is ready for application directly from the barrel land can applied by pressure spray ejector nozzle jet, mopping or brushing in to oily surfaces.

Dosage :

NOVA 4G OSD is designed to disperse from 20 to 30 times its own volume of heavy petroleum oil.

Caution :

Although this product is not dangerous to health, prolonged contract with skin and eyes can cause irritation.