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LNG (Liquefied Natural Gas)

Safety Data Sheet


1. IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND COMPANY/UNDERTAKING

Product Type/Use Fuel, Base chemical.

Name Other Names

Liquefied Natural Gas

Supplier Telephone Numbers

Emergency Tel.

+234 (0) 803 905 3999 (Production Plant - Operations)

Telephone/Fax Number

Tel: +234 (0) 803 905 3111 Fax: +234 (0) 803 905 3103

Nigeria LNG LimitedCORPORATE OFFICEINTELS, ABA ROAD ESTATEKM 16 ABA EXPRESSWAYPMB 5660 PORT HARCOURTNIGERIA.

Preparation Descript ionNatural Gas - CAS 8006-14-2; EINECS 232-343-9; F+; R12 Extremely Flammable.Complex mixture of hydrocarbons, predominantly methane with some other lower alkanes. Traces of C4 and C5components may be present but 1,3-butadiene concentrations are <0.1%.

Dangerous Components / ConstituentsContains the following constituents which may have health and safety effects that are present at significantquantities.

Name CAS EINECS Proport ion Hazard R Phrase

Methane 74-82-8 2008127 85-100 % F+ R12

Ethane 74-84-0 2008148 1-10 % F+ R12

Propane 74-98-6 200-827-9 1-5 % F+ R12

Butane 106-97-8 203-448-7 0-1.5% F+ R12

Heavier 0-0.1%

2. COMPOSITION / INFORMATION ON INGREDIENTS

EC Classification Extremely Flammable.

Human Health HazardsLiquefied natural gas is a cryogenic liquid. Skin contact with liquid gas may give rise to frost-bite. High gasconcentrations will displace available air; unconsciousness and death may occur suddenly from lack of oxygen.

Safety HazardsExtremely flammable. In use, may form flammable/explosive vapour-air mixture.

3. HAZARDS IDENTIFICATION

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Environmental HazardsNot classified as dangerous for the environment.

4. FIRST AID MEASURES

Symptoms and EffectsNot expected to give rise to an acute hazard under normal conditions of use.

InhalationRemove to fresh air. Do not attempt to rescue the victim unless proper respiratory protection is worn. If the victimhas difficulty breathing or tightness of the chest, is dizzy, vomiting or unresponsive, give 100% oxygen with rescuebreathing or CPR as required and transport to the nearest medical facility.

SkinSlowly warm exposed area by rinsing with lukewarm water. Transport to the nearest medical facility for additionaltreatment.

EyeSlowly warm exposed area by rinsing with lukewarm water. Transport to the nearest medical facility.

IngestionIn the unlikely event of ingestion, obtain medical attention immediately.

Advice to DoctorTreat symptomatically.

5. FIRE FIGHTING MEASURES

Specific HazardsForms flammable mixture with air. If LNG is released, the resulting vapours will disperse with the prevailing wind.If a source of ignition is present where the vapour exists at 5-15% concentration in air, the vapour will burn alongthe flame front toward the source of the fuel.

Extinguishing MediaShut off supply. If not possible and no risk to surroundings, let the fire burn itself out. Dry powder, carbon dioxidemay be used for small fires. Fire fighting foam (medium or high expansion) can only control the fire and dispersion

– it will not stop it.Unsuitable Extinguishing MediaDo not use water in a jet.

Protective EquipmentFire fighters to wear self-contained breathing apparatus if risk of exposure to vapour or products of combustion.

6. ACCIDENTAL RELEASE MEASURES

Accidental Release Measures Avoid contact with spilled or released material. For guidance on selection of personal protective equipment seeChapter 8 of this material safety data sheet. See chapter 13 for information on disposal. Observe all relevant localand internal regulations.

Personal PrecautionsRemove all possible sources of ignition in the surrounding area. Evacuate all personnel. Do not breathe vapour.Do not operate electrical equipment. Avoid contact with skin, eyes, and clothing. Ventilate contaminated areathoroughly.

Environmental PrecautionsShut off leaks, if possible without personal risk. Attempt to disperse the gas or to direct its flow to a safe location forexample by using fog sprays. Take precautionary measures against static discharge. Ensure electrical continuityby bonding and grounding (earthing) all equipment. Monitor area with combustible gas meter.

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Maritime SpillagesFor small spillages on the deck of ships the source should be isolated and the spill should be sprayed with water tominimize the risk of cryogenic fracturing of steel. In the case of large spillages on deck or onto water, the source isto be isolated if possible, but personnel to be kept clear and natural vaporization allowed to take its course.Release of LNG into water may cause explosive boiling due to rapid phase transition (liquid to gas).

Other InformationLocal authorities should be advised if significant spillages cannot be contained. Observe all relevant localregulations.

7. HANDLING AND STORAGE

Handling Avoid contact with skin, eyes, and clothing. Extinguish any naked flames. Remove ignition sources. Avoid sparks.Do not smoke. Under normal conditions, LNG will be handled in enclosed systems, therefore no exposure isanticipated.

StorageCryogenic containers are equipped with pressure relief devices to control internal pressure. Under normalconditions, these containers will periodically vent product. Do not plug, remove or tamper with the pressure reliefdevice. Do not enter storage tanks. If entry into tanks is absolutely necessary, specialist advice should be sought.

Storage Temperatures-162°C.

Product TransferElectrostatic charges may be generated during pumping. Ensure electrical continuity by bonding all equipment.Only transfer lines designed for cryogenic liquids shall be used.

Tank CleaningInspection and maintenance of LNG storage tanks is a specialist operation which requires the implementation ofstrict procedures and precautions. These include issuing of work permits, gas-freeing of tanks, using a mannedharness, lifelines, and wearing air-supplied breathing apparatus. Prior to entry the atmosphere in the tank must bemonitored using an oxygen meter and explosimeter.

Recommended Materials

For containers, allowable materials are those with proven sufficient low temperature (-165ºC) toughness. Theverification of sufficient toughness properties is usually carried out by testing at –196ºC (liquid nitrogen). Suitablematerials include austenitic stainless steels (types 304, 304L, 304LN, 316, 316L, 316LN), weldable aluminiumalloys and 9%nickel steels (ASTM A553 Type 1 and equivalents).Examples of suitable non-metallic materials, for cryogenic application, are: PTFE, PCTFE, ETFE, and graphite.For container linings, PTFE, PCTFE, or ETFE may be used. For seals and gaskets, graphite, or (expanded)PTFEmay be used.

Unsuitable MaterialsMaterials with unproven or insufficient low temperature (-165ºC) toughness are prohibited. These includeunalloyed carbon steels. In austenitic stainless steels, weld metals containing niobium should not be used in LNGservice.Non-metallic materials, e.g. fiberglass, elastomers, thermoplastics, may be unsuitable for containers, container

linings, seals, and gaskets, at cryogenic temperatures. Examples of materials to avoid are: natural rubber (NR),nitrile rubber (NBR, HNBR), ethylene propylene rubber (EPDM), Viton (FKM), polyethylene (PE, HDPE),polypropylene (PP), polyvinyl chloride (PVC).

Other InformationEnsure that all local regulations regarding handling and storage facilities are followed.

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Exposure Limits

Substance Regulations Exposure Duration Exposure Limit Units Notes

Propane ACGIH TWA 1000 ppm

Butane ACGIH TWA 1000 ppm

ACGIH ACGIH Threshold Limit Values.

Other Exposure InformationMethane, Ethane and Propane are all simple asphyxiants.

Exposure ControlsThe level of protection and types of controls necessary will vary depending upon potential exposure conditions.Select controls based on a risk assessment of local circumstances. Used sealed systems as far as possible. Adequate explosion-proof ventilation to control airborne concentrations below the exposure guidelines/limits.

Respiratory ProtectionIf engineering/operation controls do not maintain airborne concentrations to a level which is adequate to protectworker health, select respiratory protective equipment suitable for the specific conditions of use and meeting

relevant legislation. Check with respiratory equipment suppliers. Where air-filtering respirators are unsuitable (e.g.where airborne concentrations are high, there is a confined space or a risk of oxygen deficiency) use appropriatepositive pressure breathing apparatus. Where Respiratory Protective equipment is required, use a full face mask.

Hand ProtectionWhere hand contact with the product may occur the use of gloves approved to relevant standards (e.g. Europe:EN374, US: F739) that are thermally resistant, are recommended.Suitability and durability of a glove is dependent on usage, e.g. frequency and duration of contact, chemicalresistance of glove material, glove thickness, dexterity. Always seek advice from glove suppliers. Contaminatedgloves should be replaced. Personal hygiene is a key element of effective hand care. Gloves must only be worn onclean hands. After using gloves, hands should be washed and dried thoroughly. Application of a non-perfumedmoisturizer is recommended.

Eye Protection

Chemical splash goggles (gas-tight monogoggles) and face shield with chin guard.Body ProtectionDo not allow any part of the body to touch un-insulated pipes or vessels containing cryogenic liquids. Chemical andcold resistant gloves/gauntlets, boots, and apron.

Exposure Measurement MethodsMonitoring the oxygen content of the air is often the best means of ensuring safety. There are substantial risks if theconcentration of oxygen in the atmosphere varies from the normal (20.8%) under normal atmospheric pressure.

Colour Colourless.

Physical State Cryogenic liquid.Odour Odourless.

Boiling Point -161.5°C (as methane)

Solubility i n Water Negligible.

Density Liquid methane at boiling point: 420 kg/m3

Flash Point Flammable Gas.

Flammable Limits - Upper 15%V (methane)

Flammable Limits - Lower 5%V/V (methane)

Auto-Ign it ion Temperature 537ºC.

9. PHYSICAL AND CHEMICAL PROPERTIES

8. EXPOSURE CONTROLS, PERSONAL PROTECTION

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Vapour Density (Air=1) 0.56-0.60.

10. STABILITY AND REACTIVITY

StabilityStable under normal use conditions.

Conditions to AvoidHeat, flames and sparks.

Materials to AvoidStrong oxidizing agents e.g. chlorates and ammonium nitrate.

Hazardous Decomposit ion ProductsHazardous decomposition products are not expected to form during normal storage.

11. TOXICOLOGICAL INFORMATION

Acute Toxic ity - OralLD50 2000 mg/kg (rat).

Acute Toxic ity - Dermal

LD50 2000 mg/kg (rat).

Acute Toxic ity - InhalationLC50 >20mg/l/4hours(rat). Acts as a simple asphyxiant by displacement of oxygen in the air.

Eye IrritationContact with liquid product may cause severe frost-bite. Vapours are not expected to be irritating.

Skin IrritationContact with liquid product may cause severe frost-bite. Vapours are not expected to be irritating.

Respiratory IrritationNot expected to be a respiratory irritant.

Skin Sensitisation

Not a skin sensitizer.CarcinogenicityNot known to be associated with carcinogenic effects.

MutagenicityNot considered to be a mutagenic hazard.

Reproductive Toxicit yNot a developmental toxicant.

Other InformationHigh gas concentrations will displace available air; unconsciousness and death may occur suddenly from lack ofoxygen. Rapid release of gases which are liquids under pressure, may cause frost burns of exposed tissues (skin,eye) due to evaporative cooling.

12. ECOLOGICAL INFORMATION

Basis for AssessmentInformation given is based on data on the components and the ecotoxicology of similar products.

MobilityContains volatile components which are expected to be released to air. Evaporates extremely rapidly from wateror soil surfaces.

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Persistence / DegradabilityInherently biodegradable. Oxidises rapidly by photochemical reactions in air.

BioaccumulationDoes not bioaccumulate significantly.

EcotoxicityPractically non-toxic, LC/EC50 > 100 mg/L, to aquatic organisms.

13. DISPOSAL CONSIDERATIONS

Waste Disposal Avoid discharge to atmosphere.

Product DisposalDo not discharge into areas where there is a risk of forming an explosive mixture with air.

Local LegislationDisposal should be in accordance with applicable regional, national, and local laws and regulations. Localregulations may be more stringent than regional or national requirements and must be complied with.

14. TRANSPORT INFORMATION

ADR/RID UN Number1972

ADR/RID Class2.1

ADR/RID Proper Shipping NameNATURAL GAS, REFRIGERATED LIQUID

IMDG UN Number1972

IMDG Hazard Class2.1

IMDG Proper Shipping NameNATURAL GAS, REFRIGERATED LIQUID

Other InformationThis product is forbidden to be transported by Air.

EC Symbols F+

Indication of dangerExtremely Flammable.

EC Risk Phrase R12 Extremely Flammable.

EC Safety PhraseS16 Keep away from sources of ignition - No smoking.S33 Take precautionary measures against static discharges.S9 Keep container in a well ventilated place.

EINECS Listed.

15. REGULATORY INFORMATION

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16. OTHER INFORMATION

References67/548/EEC - Dangerous Substances Directive.1999/45/EC - Dangerous Preparations Directive.91/155/EEC - Safety Data Sheet Directive.

EN 1473 - Installation and equipment for Liquefied Natural Gas - Design for onshore installations.EN 1160 - Installation and equipment for Liquefied Natural Gas.United Nations - Recommendations on the Transport of Dangerous Goods, Model Regulations. Vol 1 & 2.International Air Transport Association - Dangerous Goods Regulations.International Maritime Organisation - International Maritime Dangerous Goods Code. Vol 1 & 2.

RestrictionsThis product must not be used in applications other than those recommended without first seeking the advice ofthe supplier.

List of R Phrases in Section 2R12 Extremely Flammable.

Further InformationThis information is based on our current knowledge and is intended to describe the product for the purposes ofhealth, safety and environmental requirements only. It does not constitute a guarantee for any specific property of the product.... End Of SDS ...

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