guidelines po uk web

8/6/2019 Guidelines PO UK WEB

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Notice

The inormation, specication, procedures, methods and recommendations herein are presented in good aith, are

believed to be accurate and reliable, but may well be incomplete and/or not applicable to all conditions or situations that

may exist or occur. No representation, guarantee or warranty is made as to the accuracy, reliability or completeness o

said inormation, specications, procedures, methods and recommendations or that the application or use o any o the

same will avoid hazards, accidents, losses, damages or injury o any kind to persons or property or that the same will notinringe patents o others or give desired results. Readers are cautioned to satisy themselves as to the suitability o said

inormation, specications, procedures, methods and recommendations or the purposes intended prior to use.

I there are national or international legal requirements on any o the recommendations stated in this document, these

shall prevail.


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Table o contents

1 Introduction 5

2 Product inormation 6

2.1 General data 6 2.2 Physical properties 6 2.3 Flammability hazards 7 2.4 Reactivity hazards 7 2.5 Toxicology and occupational health hazards 8 2.6 Emissions and degradation 9 2.7 International transportation regulations 10 2.8 EEC labelling/special risks/saety advice 12

3 Transport and storage operations 13 3.1 Loading operations 13 3.2 Transport o Propylene Oxide by road 16 3.3 Transport o Propylene Oxide by rail 17

3.4 Transport o Propylene Oxide by sea 18 3.5 Unloading operations 19

4 Design and construction o transport and storage equipment 21 4.1 Current operation practices 21 4.2 Design and construction o railcars (rail tank cars) 21 4.3 Design and construction o tank trucks (road tankers) 23 4.4 Design and construction o tank containers 23 4.5 Design and construction o vessels and barges 23 4.6 Design and construction o storage tanks 23 4.7 Design and construction o loading and unloading acilities 23

5Emergency procedures

24

5.1 Emergency planning 24 5.2 Measures in the event o a release o Propylene Oxide 24 5.3 Fire ghting 25

6 Personal protection, frst aid and medical treatment 26 6.1 Personal protection 26 6.2 First aid and medical treatment 27

7 Training or road tanker and tank container drivers 28


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Appendix 1 29Cec and Responsible Care

Appendix 2 31Cec recommendations on sae management practices in distribution. (SQAS)

Appendix 3 32Inspection o transport equipment

Appendix 4 37Instructions in writing

Appendix 5 42Guide or the marine chartering and handling o Propylene Oxide

Appendix 6 45A Saety Scheme or the reception and storage acilities at Propylene Oxide customers

Appendix 7 51Design and construction o rail tank cars

Appendix 8 53Design and construction o tank trucks and tank containers

Appendix 9 55

Design and construction o vessels and barges

Appendix 10 56General Guidelines or design and construction o Propylene Oxide storage tanks

Appendix 11 62Member Companies o the Propylene Oxide/Propylene Glycols Sector Group

Appendix 12 63Glossary o abbreviations

Appendix 13 65Recommended general instructions or Propylene Oxide drivers

Table o contents


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1 Introduction

The Cec (European Chemical Industry Council) Responsible Care Program requires that Chemical Companies

demonstrate their commitment to continuously improve all aspects o Perormance which relate to Protection o Health,

Saety and the Environment.

An overview o the Key Elements o Cecs Distribution Responsible Care Program is contained in appendix 1.

These Guidelines have been prepared by a Task Force under the direction o the Cec Propylene Oxide Sector Group

as their execution program with regard to the application o Responsible Care in the distribution o Propylene Oxide.

They are consistent with the Cec Recommendations on Sae Management Practices in Distribution and establish

appropriately high standards o saety or the distribution o Propylene Oxide. The key elements o these Management

Practices are contained in appendix 2.

Although Propylene Oxide is a hazardous material in terms o fammability, reactivity and toxicity, it can be distributed

and handled saely provided that appropriate precautions are observed.

The Distribution o Propylene Oxide is already subject to regulations within most countries in Europe. In addition,

the international movement o Propylene Oxide by road, rail, sea or river/canal is subject to international agreements

which lay down specic requirements concerning distribution which must be observed by all parties involved.National regulations may dier rom international regulations.

These Guidelines take into account the distribution o Propylene Oxide in bulk road tankers, rail tank cars, sea tank ships,

barges and tank containers. They cover all aspects o the transport activity rom loading to delivery point. Reerence to

existing regulatory controls is only made where this is considered necessary or the purpose o clarication.

Since drum shipments are not carried out by the Sector Group Propylene Oxide manuacturers, specic distribution risk

management requirements or drum shipments are not discussed in these guidelines. However, individual companies

can oer advice upon request.

The Cec Propylene Oxide Sector Group recommends that these Guidelines are adopted by all parties who are involved

in the distribution o Propylene Oxide. This includes Commercial Transactions, Swap, Toll or Trade agreements and

Customer Collection Arrangements.

The Sector Group Members will review these Guidelines on a regular basis.


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2.1 General Data

EINECS NUMBER INDEX NUMBER CAS NUMBER SYNONYMS FORM

200-879-2 603-055-00-4 75-56-9 1,2-epoxypropane

epoxypropane

methyl ethylene oxide

methyloxirane

1, 2-Propylene Oxide

liquid

HAZARDS IDENTIFICATION

Extremely fammable

May cause cancer

May cause heritable genetic damage

Harmul by inhalation, in contact with skin and i swallowed

Irritating to eyes, respiratory system and skin

WARNING PROPERTIES

The odour o this material is inadequate to warn o excessive exposure.

2.2 Physical Properties

Formula O

H2C CH-CH

2

Molar mass 58.08 g/mol

Melting Point (101.3 kPa) -111.9C

Boiling Point (101.3 kPa) 34.2C

Flash Point (closed cup) -37C

Critical Temperature 209.1C

Critical Pressure 4920 kPa

Critical Density 312 kg/m3

Critical compressibility actor 0.2284

2 Product inormation


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Product inormation Chap2

Auto ignition temperature in air at 101.3 kPa 449C

Explosive limits in air (STP):

- Lower

- Upper

1, 7 vol%

37.0 vol%

Heat o combustion (25C 101.3 kPa) -33035 kJ/kg

Heat o Polymerization -1500 kJ/kg

Heat o usion 112.6 kJ/kg

Heat o solution in water at 25C -45 kJ/kg

Heat o ormation o the ideal gas (25C) -1600 kJ/kg

Heat o ormation o liquid Propylene Oxide (25C) -2080 kJ/kg

Standard enthalpy (298.15K) 248 kJ/kg

Standard entropy (298.15K, 1 atm.) 4.94 kJ/kg -1 K-1

Free energy o ormation (25C, 101.3 kPa) 459 kkJ/kg

Cubic expansion coecient at 20C 0.00151 1/K

Solubility o Propylene Oxide in water at 20C 40.5 wt%

Solubility o water in Propylene Oxide at 20C 12.8 wt%

Density gr/cm3 at 20C 0.83

Relative vapour density (air=1) 2.0

Vapour pressure (kPa at 20C) 57.7

Saturation concentration at 20C 1360 g/m3

Minimum ignition energy 0.13 mJ

Flashpoint o1% aqueous solution 23C

2.3Flammability hazards

Propylene Oxide, a colourless highly volatile liquid with a sweet ethereal odour, is extremely fammable with a fashpoint

o -37C (closed cup) and a wide explosive range o 1.7-37 Vol % in air.

The vapour is heavier than air and spreads at ground level, with the risk o ignition at great distance and fash back.

Propylene Oxide has ignition energy o 0.13 mJ.

2.4 Reactivity hazards

Bases, acids or metal halides can cause violent polymerization. Propylene Oxide is presumed to be able to orm peroxides

and thus to polymerize. Do not use compressed air when lling, emptying or processing. Propylene Oxide reacts violently

with oxidants, organic and inorganic acids, organic and inorganic bases, anhydrides, chlorides o iron, aluminium and tin,

chlorine, amines, ammonia and alkali metals with risk o re and explosion. Do not use clay based absorbent materials.


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2.5 Toxicology and occupational health hazards

2.5.1 InhalationPropylene Oxide is classied as harmul by inhalation and irritating to the respiratory system.

Inhalation studies in laboratory animals suggest no adverse nasal or respiratory eects will occur with Propylene

Oxide vapour concentrations o 100ppm or lower. Repeated exposure was associated with central nervous system

depression and irritation o the eyes and respiratory system. Mild to moderate damage to the nasal epithelium

was seen in rats ater repeated exposure to 200 - 400 ppm.

In humans, exposure to Propylene Oxide at several hundred ppm may result in headache, dizziness, drowsiness,

nausea, chest discomort and cough. Higher concentration (above 1000 ppm) may cause irritation and oedemao the respiratory tract and loss o consciousness. The odour threshold in air is 100 - 350 ppm. This is well above

the occupational hygiene level; hence smell should not be used as an indicator o exposure to Propylene Oxide.

2.5.2 Oral toxicityPropylene Oxide is classied as harmul by ingestion.

Oral LD 50 values in the range o 520 - 1140 mg/kg have been reported rom rat studies.

2.5.3 Skin contact

Propylene Oxide is classied as harmul and irritating ater contact with skin.

The dermal LD50 rom rabbit studies is in the range o 1240 - 7200 mg/kg. Propylene Oxide liquid is moderately

to severely irritating to skin.

In an occupational setting, skin irritation ollowing accidental contact with liquid Propylene Oxide will be

minimised i the material is allowed to evaporate reely, although contact or several minutes may produce

moderate to severe irritation. Aqueous solutions (10 % vol / vol or greater) are more irritating than undiluted

material. Note that such conditions may arise ollowing dissolution o Propylene Oxide in body sweat.

Prolonged or repeated skin contact will result in the development o chemical burns, blistering and swelling.

There are reports that it may also produce allergic dermatitis.

2.5.4 Eye contactPropylene Oxide is classied as irritating to the eyes.

High vapor concentrations may cause eye irritation, while liquid will produce corneal burns with permanent

impairment o vision possible.



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2.5.5 CarcinogenicityPropylene Oxide is classied as a Category 2 carcinogen (i.e. a substance which should be regarded as i it were

carcinogenic to man).

The occurrence o nasal tumours in rats and mice was increased ater lietime inhalation exposure to 400 ppm,

but not at 200 ppm. Shorter term (30 day) exposure to 900 ppm caused marked nasal irritation, but no increase

in tumours was recorded during a 155 week ollow-up period. The ndings suggest a weak carcinogenic response

in rodents that is conned to the principle site o contact (i.e. nasal tissue).

There is no evidence o any carcinogenic eect in humans.

2.5.6 MutagenicityPropylene Oxide was inactive in a dominant lethal assay in rodents, suggesting that it does not cause heritable

mutations in sperm. Nevertheless Propylene Oxide is classied as a Category 2 mutagen (i.e. a substance which

should be regarded as i it were able to cause heritable mutations in man) because o the ndings o micronuclei

in mice (described above) and that it was ound in the testes o animals exposed to 500ppm Propylene Oxide or

4 weeks.

2.5.7 Eects on reproductive systemPropylene Oxide is a low concern or reproductive and developmental toxicity.

No eect on ertility, litter size, neonatal growth or survival was seen in male and emale rats exposed to 300 ppm

Propylene Oxide by inhalation over two generations. Foetotoxicity and developmental eects in laboratory animalsexposed during pregnancy were minor in nature and only occurred at exposures that were maternally toxic.

2.6 Emissions and degradation

Propylene Oxide is not known to occur naturally.

Occurrence o Propylene Oxide in the environment is expected to be mainly in the atmosphere due to ugitive emissions

rom production or urther processing.

In the atmosphere, Propylene Oxide is indirectly degraded by reaction with photo chemically produced hydroxyl radicals.

The hal-lie o Propylene Oxide in the atmosphere is estimated to be 13 - 35 days. Propylene Oxide is not expected to

contribute to ozone depletion.

In water, Propylene Oxide is hydrolyzed to Propylene Glycol with an estimated hal-lie o 4 - 12 days. Biodegradation

under aerobic static laboratory conditions is moderate to high. According to MITI, Propylene Oxide is readily

biodegradable. The chloride ion in salt water accelerates the chemical degradation with a hal-lie o 2 - 4 days, as well as

basic and acidic condition. Further more Propylene Oxide is eliminated rom water by volatilisation with a hal-lie o 3

days or rivers and up to 18 days or lakes. Propylene Oxide toxicity to sh or daphnia is low.

Propylene Oxide rapidly evaporates rom dry suraces and is moderately volatile rom wet suraces.

Propylene Oxide is expected to be very mobile in soil. In moist soils, hydrolysis will be the most signicant

degradation process.

Accumulation in biological or environmental systems is not to be expected.



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2.7 International transportation regulations

ADR / RID / ADN

PROPER SHIPPING NAME Propylene Oxide

UN N 1280

CLASS 3

PACKING GROUP I

LABEL 3HAZARD ID. N 33

Fig. 1 Legend table o a Propylene Oxide rail car



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IMDG


IMO/IMDG CLASS 3

PACKING GROUP I

LABEL 3

UN N 1280

TANK TYPE UN-T11, (IMO-1) - Test Pressure (bar): 6.0

MARINE POLLUTANT No

IBC CODE

Proper shipping name Propylene Oxide

IMO/IMDG Class 3

UN N 1280

TANK TYPE 2G

SHIP TYPE 2

POLLUTION CATEGORY Y

IATA


ICAO/IATA CLASS 3

UN N 1280

PACKING GROUP I

Remarks: Sample shipment not allowed by mail



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2.8 EEC labelling / special risks / saety advice

CLASSIFICATION

Classication according to Annex I o council Directive 67/548/EEC

(Dangerous substances Directive) (EEC Label)

F+ Extremely fammable R 12

Carcinogen Category 2 R 45

Mutagen Category 2 R46

Xn Harmul by inhalation, in contact with skin and i swallowed R 20/21/22

Xi Irritating to eyes, respiratory system and skin R 36/37/38

LABELLING

F+, T

RISK PHRASES

R12 Extremely fammable

R45 May cause cancer

R46 May cause heritable genetic damage

R 20/21/22 Harmul by inhalation, in contact with skin and i swallowed

R36/37/38 Irritating to eyes, respiratory system and skin

SAFETY PHRASES

S 53 Avoid exposure - obtain special instructions beore use

S 45 In case o accident or i you eel unwell, seek medical advice immediately

(show the label where possible)



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3 Transport and storage operations

3.1 Loading operations3.1.1

The operation o lling o any road tanker, tank container, railtankcar or barge / vessel with a dangerous substance

is a potential hazard. It is thereore important that loading acilities and transport equipment are correctly

designed and constructed, and properly used and maintained.

Loading acilities should be situated at a sae distance rom storage tanks. Loading acilities at terminals should

have a remote controlled shut-o valve between the storage tanks and the loading vehicles.

For loading and unloading operations (PO selectively coded) dry disconnect couplings (NATO standard 3756) are

the European standard (liquid: 3 inch selectivity code 3-5; gas: 2 inch selectivity code W; Gasket: Chemraz 505)

ADR & RID dictates the present o three closing devices. Pressure retaining caps are strongly recommended.

3.1.2

The recommended design and construction o transport equipment is described in appendices 6 to 8 o these

Guidelines. Equipment that meets the requirements o the ADR, ADNR, RID and IMO Regulations is subjected to

periodic inspection and testing requirements as laid down in these Regulations. These inspections and tests arecarried out by certied bodies.

3.1.3

Written operating instructions should be available or all lling points covering the loading o Propylene Oxide

into bulk road tankers, tank containers, rail tank cars, barges or vessels, and personnel involved should be ully

trained in their use. The instructions should recognise the specic hazards o Propylene Oxide, and ensure the

correct operation o lling equipment in both normal and emergency situations.

3.1.4

All necessary protective clothing and emergency equipment should be available or loading operations. Personnel

should be trained in the correct use o this clothing and equipment.


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Fig. 2 Dry Disconnect Coupling connection

Fig. 3 Dry Disconnect Coupling equipment

Transport and storage operations Chap3


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Fig. 4/5 Worker in protective clothing, connecting DDC liquid connection



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3.1.5

It is not the intention in this Section o these Guidelines to attempt to set detailed operating instructions or

loading Propylene Oxide, since these, o necessity, will depend upon local situations. However, as part o the

operating instructions, an inspection o the transport equipment should be carried out by the loading terminal

sta beore, during and ater loading. This inspection does not replace nor diminish the responsibility o the

owner o the road tanker, tank container, rail tank car, barge or vessel to ensure that the equipment is properly

tested, maintained and t or purpose. It is meant to ensure that the transport o Propylene Oxide is conducted as

saely as possible. The inspection list detailed in appendix 3 is recommended or use by the supplier to check the

condition o the Propylene Oxide transport equipment, and this should apply to the loading operations o rail and

road mode.

Barges and vessels have specic checklists according to ADN/IMO regulations.

3.1.6

The inspection list assumes that Propylene Oxide is to be conveyed by international transport. In circumstances

where Propylene Oxide is to be conveyed nationally, in accordance with regulations, which may dier rom

the requirements laid down in international transport agreements, the inspection list should be modied as

appropriate.

3.2 Transport o Propylene Oxide by road3.2.1

The carrier is responsible or the sae transport o Propylene Oxide by road rom the loading point to the

discharge point. Road carriers must meet all relevant national and international regulations relating to Propylene

Oxide. Road carriers should preerably have a Quality system (like ISO 9000) and participate in an SQAS scheme.

Cec guidelines provide a ramework or the implementation o the principles o Behaviour Based Saety (BBS)

(http://www.cec.org/en/transport-and-logistics-best-practices-guidelines.html) to sae driving o road reight

vehicles. BBS is a programme aimed at increasing saety during transport by positively infuencing the behaviour

o drivers through observation, coaching and communication.

For reasons o unwanted reactions, contamination must be avoided. Thereore, only dedicated road tankers

and tank containers must be used or Propylene Oxide. Transport equipment has to be held under (positive)

nitrogen/PO vapor pressure at all times (to avoid air ingress). All connections should be sealed (see appendix 3).

3.2.2 RoutingThe transport o Propylene Oxide has to ollow the ADR regulations. Propylene Oxide should only be transported

on dened routes. The route to be ollowed must be selected careully and should be known to both the carrier

and the consignor.

As ar as possible, the route should:

a) Utilise motorways,

b) Avoid areas o high population density.

3.2.3 Severe Weather conditionsWhen severe weather conditions occur during transport, or example icy roads, snow or poor visibility, the delivery

has to be stopped at the next suitable parking place.



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3.2.4 Delays or accidentsAll delays during transport, whether due to severe weather conditions, breakdown or other reasons must be

reported to the consignor as soon as possible.

Transport accidents must also be reported to the consignor as soon as possible.

3.2.5 Emergency procedureI emergency action needs to be taken by drivers when leaks, spills or re occur during transport, then the

instructions given in the Instructions in writing must be ollowed. See appendix 4.

3.2.6 Ferry selectionThe consignor will ensure that he knows which erry operators are being used by the road carrier and will satisy

him o their suitability.

3.2.7 Customer collectionCustomer collection should be avoided, except or co-producers.

However, i such collections take place, appendix 3 should be used.

3.2.8 Multimodal transportTank containers are oten transported in a multimodal system. This is generally organised by the carrier.

Management systems shall be in place to ensure quality and saety o operations by the carrier or the completesupply chain. This system should preerably be checked by means o an SQAS.

3.2.9 SubcontractingContractual arrangements between consignor and carrier should explicitly state that transport must not be

subcontracted without prior approval o the consignor.

The subcontractor must ull the same requirements as the principal contracting carrier.

3.3 Transport o Propylene Oxide by rail

3.3.1

The appropriate railway companies, reight orwarders and authorities are responsible or the sae transport o

Propylene Oxide by rail rom dispatch location to nal reception acilities. For reasons o unwanted reactions,

contamination must be avoided. Thereore, only dedicated rail tank cars must be used or Propylene Oxide.

Transport equipment has to be held under (positive) nitrogen / PO vapor pressure at all times (to avoid air

ingress). All connections should be sealed (see appendix 3).

The selection o route, intermediate stopping locations and delay o trac due to severe weather conditions are

matters to be decided by the railway companies and authorities.

As SQAS Rail is now available, it should progressively be used.

3.3.2

The consignor will ensure that they are inormed which rail-erry operators the national railways are using.



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Fig. 6 Derailleur at a flling station to prevent other railcars rom entering the loading station

3.4 Transport o Propylene Oxide by sea3.4.1

Transport o Propylene Oxide by sea may be either:

a) By roll on/roll o erries, or

b) Lit on/lit o shipment in tank containers

c) Bulk by seagoing vessels.

3.4.2

Because o the nature o the transport, a number o dierent parties may be involved in the transport oPropylene Oxide rom consignor to customer. These may include the shipping company, port or harbour

authorities and carriers.

3.4.3

Prior to the commencement o each trac fow; the consignor should make sure that all parties involved have

adequate Saety, Health and Environment standards.

Particular areas o interest are:

a) The shipping company

b) Loading/unloading acilities at container terminals

c) Emergency handling within hazardous cargo yards at container terminals

d) Emergency handling on board.

The Saety, Health and Environment system should preerably be checked by means o a CDI-Marine inspection.



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3.4.4

The consignor should issue specic instructions or the control o the operation to all parties involved and the

actions to be taken in the event o an emergency.

3.4.5

Transport by sea and inland waterways in bulk requires a suitable ship or barge that is certied to carry Propylene

Oxide. Reer to appendix 5 or details.

3.5 Unloading operations3.5.1

The unloading o any road tanker, tank container, rail tank car, ship or barge o Propylene Oxide is a potential

hazard. It is thereore important that unloading acilities are correctly designed and constructed, and properly

used and maintained. Unloading acilities should be situated at a sae distance rom storage tanks. Unloading

acilities at terminals should have a remote controlled shut-o valve between the storage tanks and the loading/

unloading vehicles (see chapter 4).

For loading and unloading operations PO selectively coded dry disconnect couplings (NATO standard 3756) are

the European standard (liquid: 3 inch selectivity code 3-5; gas: 2 inch selectivity code W; Gasket: Chemraz 505)

Pressure retaining caps are strongly recommended.

Fig. 7 Dust caps



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3.5.2

Unloading acilities should be designed and located having due regard to the potential hazards associated with

Propylene Oxide.

The equipment should be subject to regular and documented checks to ensure reliability.

Maintenance should be done by trained personnel.

3.5.3

Written operating instructions should be available or unloading Propylene Oxide rom road tankers; tank

containers, rail tank cars and ships as appropriate, and personnel involved should be ully trained in their use.

The instructions should recognise the specic hazards o Propylene Oxide, and ensure the correct operation o

unloading equipment in both normal and emergency situations.

3.5.4

All necessary protective clothing and emergency equipment should be available or unloading operations.

Personnel should be trained in the correct use o this clothing and equipment.

3.5.5 Maintenance o transport equipmentCustomers are requested to report any diculties, which are experienced with the operation o valves,

immediately to the consignor. The use o an inormation tag on the returning transport equipment identiying

the problem can be o assistance.

3.5.6

The conditions or discharge o Propylene Oxide at a customers premises are the customers responsibility.

I the customer requires such, the consignor may provide him with technical advisory and saety service, which in

principle may include an EH&S visit.

I an EH&S visit is made, the scheme included in appendix 5 may be used as a checklist. Normally the customer

himsel should evaluate whether his premises, especially his reception and storage acilities, correspond with the

requirements o the scheme included in appendix 6.



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4 Design and construction o transportand storage equipment

4.1 Current operating practices

The Propylene Oxide manuacturers use either equipment or the bulk transport o liqueed or pressurized gases (LG) or

equipment or bulk liquid transportation o Propylene Oxide according to the applicable regulations.

4.2 Design and construction o railcars (rail tank cars)

Railcars or the carriage o Propylene Oxide must meet the design and construction requirements o:

a) National Regulations or Local Railway Administration Regulations, when used or national transport.

b) International Regulations, such as the International Regulations concerning the Carriage o Dangerous Goods

by Rail (RID), when used or international transport.

In addition it is recommended that railcars are designed and constructed in accordance with the recommendations

contained in appendix 7.

Fig. 8 Blockade to fx a rail car together with a spiral spring handle, which closes the valves automaticallywhen the rail car rolls away


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Chap4Design and construction o transport and storage equipment

Fig. 9 Rail hook combined with a remote control, which closes the bottom valve i activated. This example showsonly the set up or liquefed gas railcars.


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5 Emergency procedures

5.1 Emergency planning5.1.1

All Propylene Oxide producers involved in transporting Propylene Oxide in Europe should have an established

Emergency Plan or receiving transport incident reports and or providing expert advice by telephone and, as

necessary, at the incident scene to the Emergency Services on how to minimize any danger arising rom an

incident on road, rail or waterway. The Cec document Distribution Emergency Response - Guidelines or Use by

the Chemical Industry provides advice on setting up a Company Emergency Plan.

5.2 Measures in the event o a release o Propylene Oxide5.2.1

Shut o all potential ignition sources and leaks, i without risk

No open fames

Keep upwind

Isolate area and deny entry

Do not get into eyes

Avoid contact with skin

Avoid breathing vapour.

5.2.2

Dilute liquid spills with large amounts o water

Use water spray to reduce the extent o vapour

Avoid the use o clay-based absorbents

Dike larger spills and recover

Prevent entry into sewers and/or natural waters

I substance has entered a water course or sewer, inorm/advise Authorities.

5.2.3

By covering a liquid spill as quickly as possible with oam, evaporation and hence the ormation o a fammable

gas cloud can be prevented. The released liquid must then be recovered and transerred to sealable tanks or

drums. Any remaining quantities o Propylene Oxide should be absorbed into suitable materials such as sand


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Emergency procedures Chap5

and transported in closed drums to a suitable processing installation. The recommended method o disposal is

by incineration.

5.3 Fire fghting

5.3.1

Do not put out any re until leak is shut o. The reason is to prevent re-fash.

5.3.2

Cool containers exposed to heat / re with water, to prevent overpressure / bursting.

5.3.3 Small fresUse dry chemical or carbon dioxide (CO2).

5.3.4 Large fresUse water spray, og or alcohol oam.

5.3.5 Massive fres Use unmanned hose holders or monitor nozzle

Consider letting the re burn out

Dike liquid run-o

Prevent entry into sewers and/or natural waters.


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6.1 Personal protection6.1.1

Eye protection: Use chemical resistance saety goggles.

6.1.2

Normal working clothes should be worn during routine handling.

6.1.3

Clothing or spill and re:

wear ull protective clothing PO resistant gloves under gauntlet type Nitriles rubber gloves, rubber

saety boots and approved positive pressure breathing apparatus

remove contaminated clothing immediately, preerably under saety shower / re hose spray, and wash

beore re-use

destroy contaminated shoes and leather items

Review supplier saety data sheet or more inormation.

6 Personal protection, frst aid and medical treatment

Fig. 10 Fully protected operator


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6.2 First aid and medical treatment

Never give fuids or induce vomiting i patient is unconscious or is having convulsions.

InhalationRemove to resh air. I not breathing, give articial respiration. I breathing is dicult, oxygen should be

administered by qualied personnel. Call a physician or transport to medical acilities or immediate

medical advice.

Skin contactIn case o contact, immediately fush skin with plenty o water or at least 15 minutes while removing

contaminated clothing and shoes. Call a physician i irritation persists. Wash clothing beore reuse.

Destroy contaminated shoes. Seek medical attention immediately.

Eye contactImmediate and continuous irrigation with running water or at least 15 minutes is imperative.

Prompt medical consultation is essential. Seek medical attention immediately.

Ingestion

I swallowed, rinse mouth and go immediately to hospital.Inducement o vomiting to be indicated by a doctor only.

Note to physicianCauses central nervous system depression. I burn is present, treat as any thermal burn, ater decontamination.

Treat symptomatically. No specic antidote. Supportive care. Treatment based on judgement o the physician in

response to reactions o the patient.

Personal protection, rst aid and medical treatment Chap6


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7 Training for road tanker and tank container drivers

The ADR agreement requires a valid dangerous goods driving license or all drivers o road tankers or transport units

carrying tank containers with a total capacity o more than 3000 liters.

Beore transporting Propylene Oxide, it is recommended that the driver is trained on the specifc hazards o Propylene

Oxide. This training should include security aspects according to 1.10 ADR and may contain the topics mentioned inappendix 13.


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Appendix 1 Cec and Responsible Care

1 Responsible Care - a public commitment

"Chemical companies shall demonstrate their commitment to continuously improve all aspects o perormance which

relate to protection o health, saety and the environment."

2 Prevention o accidents

Within Responsible Care, prevention is a prerequisite to Emergency Response. The Cec-ICE (International Chemical

Environment) prevention program provides a valuable tool in reducing the number o incidents during the distribution o

chemicals, rom the time they leave the actory gate until their arrival at the customer's premises.

3

The objective is to minimize the possibility or incidents to happen. Since most distribution activities are subcontractedand since compliance with regulations is a necessary but not a sucient condition to prevent accidents, there is a need

or uniorm saety & quality criteria against which distribution companies are regularly assessed. Unlike ISO 9002,

which concentrates on quality, at a level set by the individual distribution company, SQAS - Saety & Quality Assessment

Systems - provide objective perormance indicators, which allow the monitoring o continuous improvements.

4

Based on detailed questionnaires, distribution contractors can be assessed by a qualied third party. Questions relate to

management, equipment and operations, split by: statutory requirements, additional chemical industry requirements and

desirable items. Scoring results can be presented in dierent ways but it is up to each individual chemical company to

evaluate the results according to its own standards.

The distribution contractors will include:

Marine transport: Vessels and barges. (Ferries)

Road transport: Road carriers

Storage operations: Terminals/Warehouses

Ferry operators


30/6630

5 Emergency response

Although the chemical industry has a ne record in preventing chemical transport incidents, it is committed to

continuous improvement. The ICE Emergency Response scheme, a cooperative program coordinated by Cec, will

provide emergency response across national boundaries. It aims to build upon the best existing prevention practices,

preserve proven emergency response schemes and extend the best emergency schemes to countries where none exist.

The chemical industry makes its expertise available to authorities - who are normally in charge o the emergency - at three

levels o assistance.

Level 1: Remote inormation and general advice by telephone or ax

Level 2: Presence o an expert who will provide advice at the scene o an incident Level 3: Actual help with equipment and personnel at the scene o an incident

For detailed inormation on this subject consult: the Cec ICE - European Emergency Response Network: Operational

National ICE schemes (www.Cec.org).

Appendix1Cec and Responsible Care


31/6631

Appendix 2 Cec recommendations on sae management practicesin distribution (SQAS)

These recommendations conorm to the principles o Responsible Care and include the ollowing topics:

1. Saety, health and environmental policies

2. Auditing

3. Risk reduction

4. Specication o packages, tanks and other equipment5. Incidents evaluation

6. Codes and regulations

7. Control operations

8. Training

9. Selection and monitoring o Contractors

10. Data and inormation

11. Emergency Response

12. Inormation to the public

Although these Guidelines or the distribution o Propylene Oxide are product specic, it is essential that policies,

systems and procedures as described in the Cec recommendations on Sae Management Practices in Distribution are in

place and well maintained.


32/6632

Appendix 3 Inspection o transport equipment

1 Routine inspection o road tankers and tank containersat loading terminals

I any o the ollowing conditions are not met, the loading operation must be stopped and the situation rectied beorecommencing loading.

A) BEFORE LOADING

1. Does the truck have any visual deects (e.g. lights and tyres in good condition)?

2. Is there a valid ADR equipment-certicate or carriage o Propylene Oxide?

3. Has the driver a valid ADR license or the bulk transport o dangerous substances o Class 3?

4. For tank containers, is the CSC (Convention o Sae Container) tank plate valid?

5. Are all dangerous goods labels tted (see Chapter 2.7), are the identication numbers

331280

attached, or the national identication plate in accordance with national regulations, and is the Tremcard

in all required languages on board?

6. For combined ADR/IMO transport: are the IMO dangerous goods labels tted? Is the UN number

attached as per these regulations?

7. Does the driver have all the necessary items o protective clothing and saety equipment as specied

by the Tremcard?

8. Is the equipment dedicated or transporting PO?

9.

Determine the maximum payload based on:

Tare weight

Route

Country o destination

Transport mode

Minimum and maximum lling degree

Volume o tank

10. Are all the valves closed upon arrival?

11. Can all valves be operated correctly?

12. Are the loading/unloading valves leak proo?

13. Is the tank placed at the correct loading position?

14. Are the wheels o the truck blocked by wheel blocks or other tools?

15. Is the road tanker or tank container equipped with Propylene Oxide selective dry disconnected couplings?

16. Is the vehicle earthed? The earthling cable should be tted and a satisactory earth established beore loading

connections are made.


33/6633

B) WHILST LOADING

1. Is the maximum degree o lling not exceeded?

2. Is the minimum degree o lling in line with ADR 4.2.1.9.6 a?

3. When lling transport tanks, an appropriate allowance should be made to the pressures indicated to allow or

equilibration between the gas and liquid phases ater the tank is sealed. This allowance will vary depending

upon loading conditions, but may be o the order o 0.5- 1.0 bar. Even ater unloading Propylene Oxide tanks

should be maintained at a minimum overpressure o 0.2-0.3 bars by using nitrogen.

C) AFTER LOADING

1. Is the maximum gross weight not exceeded?

2. Are all valves closed and blinded, with all bolts in place and are all dry disconnected couplings/metal

caps in place?

3. Are all openings sealed?

4. Beore disconnection, the loading arms/fexible hoses must be purged with nitrogen.

5. Is the vehicle earthling removed? At the end o the transer operation, the loading connections must be

disconnected beore the earthing cable is removed.

2 Routine inspection o rail tank cars (RTCs) at loading terminals

I any o the ollowing conditions are not met, the loading operation must be stopped and the situation rectied beore

loading is allowed to continue.

A) BEFORE LOADING

1. Is the rail track secured to prevent collision?

2. Is the RTC suitable or Propylene Oxide transport, e.g. in respect o maximum working pressure o tank?

Is the inspection date not exceeded?3. Are all dangerous goods labels tted and are the identication numbers?

33

1280

attached?

For RTCs in combined RID/IMO transport: are the IMO labels tted?

4. Determine the maximum payload based on:

Tare weight

Country o destination

Route

Transport mode

Minimum and maximum lling degree

Volume o tank

5. Are all the valves on either side o the RTC properly closed and blinded upon arrival?

Appendix3Inspection o transport equipment


34/6634

6. In case o hydraulically or mechanically operated valves:

Is the emergency bolt unused and stored in a sae position on the RTC chassis?

(This emergency bolt may only be used to open the bottom valves in the case o an emergency. It is strictly

orbidden to start loading with the internal valve blocked by the emergency bolt.)

7. Can all valves be operated?

8. Are the loading / unloading valves leak proo?

9. Is the RTC placed at the correct loading position?

10. Are the wheels o the RTC blocked by wheel blocks or other tools?

11. Is the RTC equipped with Propylene Oxide selective dry disconnect couplings?

12. Is the vehicle earthed? The earthling cable should be tted and a satisactory earthing established beore

loading connections are made.

13. Ater connection, the loading arm / fexible hoses must be pressurized with nitrogen and the connections

checked or leaks beore transer is allowed.

B) WHILST LOADING

1. Is the maximum degree o lling not exceeded? See Chapter 2.7.

2. When lling transport tanks, an appropriate allowance should be made to the pressures indicated to allow or

equilibration between the gas and liquid phases ater the tank is sealed. This allowance will vary dependingupon loading conditions, but may be o the order o 0.5- 1.0 bar. Even ater unloading Propylene Oxide tanks

should be maintained at a minimum overpressure o 0.2-0.3 bars by using nitrogen.

C) AFTER LOADING

1. Is the maximum gross weight not exceeded, concerning A, B, C or D grid?

2. Are all valves closed and blinded, with all bolts in place and are all dry disconnect couplings / metal caps in

place on either side o the RTC?

3. Are all openings sealed?

4. Beore disconnecting, the fexible hoses must be purged with nitrogen.

5. Is the RTC earthing removed? At the end o the transer operation, the loading arm / hose must be

disconnected beore the earthing cable is removed.



35/6635

3 Unloading

The same guidelines as in appendix 3 paragraph 1 and 2 (relevant items) should be used or preparing a checklist or the

inspections o the transport equipment beore and during unloading.

The conditions o discharge at customers premises are the customers responsibility.

1. Are written operating procedures at the premises?

2. Have personnel engaged in this operation been adequately trained?

3. Has the product been positively identied as Propylene Oxide?

4. In case o multiple possibilities at the discharge point has the correct discharge point been identied?

5. Can the receiving tank(s) take the complete load?

6. Is the driver available (road tanker) and within sight o his vehicle or emergency reasons?

7. Has the content o the truck, RTC, barge or vessel been included in the emergency plan?

8. Does the operating procedure contain actions i a problem develops i.e. stopping and closing the external

discharge valves?

9. Does the operator use an unloading checklist?

10. Is the unloading site equipped with Propylene Oxide selective dry disconnect couplings? Have these been

regularly been inspected and maintained?

4 Initial inspection o road tankers, tank containersand rail tank cars (RTCs)

Beore road tankers, tank containers or RTCs are rst introduced to Propylene Oxide service, or reintroduced to service

ollowing maintenance or repair, a responsible person rom the loading company should seek conrmation o the

ollowing items:

a) Is the transport equipment identical in all respects with the general arrangement engineering drawing?

b) Have the correct packings and gaskets been tted?

c) Has the tank been properly cleaned? (Grit blasting and vacuum cleaning or carbon steel tanks, with no rust

remaining; degreasing or stainless steel tanks).

d) Do all valves unction correctly? It is recommended beore starting with the rst loading o a new or repaired

vehicle a take into service procedure will be conducted.

e) Do all dry disconnect couplings unction correctly?



36/6636

Fig. 11 Example o checklist

5

Maintenance o transport equipmentDuring operations, unscheduled maintenance o the transport equipment may be necessary i quick closing valves or

bottom valves and dry disconnect couplings on road tankers/tank containers or RTCs cease to unction correctly.

Similar diculties may be experienced with excess fow valves on tank containers and road tank cars.

Valves may become blocked with small amounts o polymer. Customers should be instructed to immediately report to the

consignor any diculties which are experienced with the operation o valves. The provision o an inormation tag on the

returning transport equipment identiying the diculty can be o assistance.

Consignors o RTCs should maintain close liaison with local railway authorities on all matters concerning the running

gear o RTCs.

The O-rings o the PO selective dry disconnect couplings shall be replaced regularly according to the recommendations o

the couplings manuacturer.



37/6637

Appendix 4 Instructions in writing

Actions in the event o an accident or emergency

In the event o an accident or emergency that may occur or arise during carriage, the members o the vehicle crew shall

take the ollowing actions where sae and practicable to do so:

Apply the braking system, stop the engine and isolate the battery by activating the master switchwhere available;

Avoid sources o ignition, in particular, do not smoke or switch on any electrical equipment;

Inorm the appropriate emergency services, giving as much inormation about the incident or accident

and substances involved as possible;

Put on the warning vest and place the sel-standing warning signs as appropriate;

Keep the transport documents readily available or responders on arrival;

Do not walk into or touch spilled substances and avoid inhalation o umes, smoke, dusts and vapours

by staying up wind;

Where appropriate and sae to do so, use the re extinguishers to put out small/initial res in tyres,

brakes and engine compartments;

Fires in load compartments shall not be tackled by members o the vehicle crew;

Where appropriate and sae to do so, use on-board equipment to prevent leakages into the aquatic

environment or the sewage system and to contain spillages;

Move away rom the vicinity o the accident or emergency, advise other persons to move away and ollow

the advice o the emergency services;

Remove any contaminated clothing and used contaminated protective equipment and dispose o it saely.


38/6638

Additional guidance to members o the vehicle crew on the hazard characteristics o dangerous goods by class and on

actions subject to prevailing circumstances

DANGER LABELS AND PLACARDS (1) HAZARD CHARACTERISTICS (2) ADDITIONAL GUIDANCE (3)

Explosive substances and articles

1 1.5 1.6

May have a range o properties and eects

such as mass detonation; projection o

ragments; intense re/heat fux; ormation

o bright light, loud noise or smoke.

Sensitive to shocks and/or impacts

and/or heat.

Take cover but stay away rom

windows.

Explosive substances and articles

1.4

Slight risk o explosion and re. Take cover.

Flammable gases

2.1

Risk o re.

Risk o explosion.

May be under pressure.

Risk o asphyxiation.

May cause burns and/or rostbite.

Containments may explode when heated.

Take cover.

Keep out o low areas.

Non-fammable, non-toxic gases

2.2

Risk o asphyxiation.


May cause rostbite.


Take cover.


Toxic gases

2.3

Risk o intoxication.


May cause burns and/or rostbite.


Use emergency escape mask.

Take cover.


Flammable liquids

3

Risk o re.

Risk o explosion.


Take cover.


Prevent leaking substances

rom running into the aquatic

environment or the sewage

system.

Appendix4Instructions in writing


39/6639


Flammable solids, sel-reactive

substances and desensitized

explosives

4.1

Risk o re. Flammable or combustible,

may be ignited by heat, sparks or fames.

May contain sel-reactive substances that

are liable to exothermic decomposition in

the case o heat supply, contact with other

substances (such as acids, heavy-metal

compounds or amines), riction or shock.

This may result in the evolution o harmul

and fammable gases or vapours.

Containments may explode when heated




system.

Substances liable to spontaneous

combustion

4.2

Risk o spontaneous combustion

i packages are damaged or contents

are spilled.

May react vigorously with water.

Substances which, in contact with

water, emit fammable gases

4.3

Risk o re and explosion in contact

with water.

Spilled substances should

be kept dry by covering

the spillages.

Oxidizing substances

5.1

Risk o ignition and explosion.

Risk o vigorous reaction in contact with

fammable substances.

Avoid mixing with fammable

or combustible substances

(e.g. sawdust).

Organic peroxides

5.2

Risk o exothermic decomposition

at elevated temperatures, contact with

other substances (such as acids, heavy-metal compounds or amines), riction or

shock. This may result in the evolution o

harmul and fammable gases or vapours.

Avoid mixing with fammable

or combustible

substances (e.g. sawdust).

Toxic substances

6.1

Risk o intoxication.

Risk to the aquatic environment and

the sewerage system.

Use emergency escape mask.



40/6640


Inectious substances

6.2

Risk o inection.

Risk to the aquatic environment and

the sewerage system.

Radioactive material

7A 7B

7C 7D

Risk o intake and external radiation. Limit time o exposure.

Fissile material

7E

Risk o nuclear chain reaction.

Corrosive substances

8

Risk o burns.

May react vigorously with each other, with

water and with other substances.

Risk to the aquatic environment and the

sewerage system.




system.

Miscellaneous dangerous

substances and articles

9

Risk o burns.

Risk o re.

Risk o explosion.

Risk to the aquatic environment andthe sewerage system.




system.

NOTE 1: For dangerous goods with multiple risks and or mixed loads, each applicable entry shall be observed.

NOTE 2: Additional guidance shown above may be adapted to refect the classes o dangerous goods to be carried

and their means o transport.



41/6641

Equipment or personal and general protection to carry out generalactions and hazard specifc emergency actions to be carried onboard the vehicle in accordance with section 8.1.5 o ADR

The ollowing equipment shall be carried on board the transport unit or all danger label numbers:

or each vehicle, a wheel chock o a size suited to the maximum mass o thevehicle and to the diameter

o the wheel;

two sel-standing warning signs;

eye rinsing liquida; and

or each member o the vehicle crew a warning vest (e.g. as described in the EN 471 standard);

portable lighting apparatus;

a pair o protective gloves; and

eye protection (e.g. protective goggles).

Additional equipment required or certain classes:

an emergency escape maskb or each member o the vehicle crew shall be carried on board the vehicle

or danger label numbers 2.3 or 6.1;

a shovelc;

a drain sealc;

a collecting container made o plasticsc.

a Not required or danger label numbers 1, 1.4, 1.5, 1.6, 2.1, 2.2 and 2.3.b For example an emergency escape mask with a combined gas/dust lter o the A1B1E1K1-P1 or A2B2E2K2-P2 type which is similar to that described

in the EN 141 standard.c Only required or danger label numbers 3, 4.1, 4.3, 8 and 9.



42/6642

Appendix 5 Guide or the marine chartering and handlingo Propylene Oxide (PO)

Ships complying with bulk chemical codes

Inspection o all marine vessels or compliance with the Guidelines shall be made by a responsible and competent person

prior to each loading to conrm a satisactory condition o the vessels cargo system.

Ships that have never been in the companys service will be inspected by a Marine Surveyor, under the CDI scheme (see

note) or a Company initiated scheme, to veriy compliance with these guidelines and all applicable regulations prior to

charter acceptance.

1 Certifcation

Propylene Oxide will only be loaded/carried on vessels meeting all currently applicable requirements and regulations o

all applicable IMO codes and conventions, such as Bulk Gas Codes, Bulk Chemical Codes, SOLAS and MARPOL 73/78,

and standards such as the U.S. Coast Guard Standard or the carriage o OXIDES.

The carriage o Propylene Oxide should be permitted by the vessels International Certicate o Fitness or the Carriage oDangerous Chemicals in Bulk, which should be valid or the expected duration o the voyage, state the carriage conditions

or Propylene Oxide and be suitably endorsed. Alternatively a letter o compliance o the US Coast Guard or any other

competent Flag State Authority can permit the carriage.

2 Prior cargoes

Documentation o the previous three (3) cargoes must be provided prior to the ships arrival at the loading berth.

Propylene Oxide will not be transported in cargo systems which have contained as one o the three (3) previous cargoes

any material known to catalyse the reaction o Propylene Oxide, unless adequate cleaning and inspection is possible and

procedures to aect this have been issued.

Table1 Products known to catalyse polymerisation o Propylene Oxide

ACIDS ALKALIES AMINES AMMONIA

Hydrochloric Caustic Ethylamines

Phosphoric Sodium Hydroxide Propylamines

Nitric Potassium Hydroxide Ethyleneamines

Acetic and other metal Methyleneamines

Sulphuric hydroxides and and other Amines

and other acids solutions and solutions

See Table 1 for cargoes known to catalyse polymerisation of Propylene Oxide in the US Coast Guard Chemical Compatibility Chart


43/6643

3 Inspection, segregation and loading

Proper procedures or inspection, segregation o cargo and loading should be developed and used by the loader.

Prior to PO loading the cargo tanks ought to be purged with Nitrogen to


44/6644

Chemical distribution institute (CDI)This is a system that provides objective inormation on the quality o shipping.

CDI is an independent system to select and monitor contractors involved in shipping. The system emphasises

saety perormance, environmental protection, regulatory compliance, maintenance and training.

A regular review o the above mentioned perormance and necessary improvements are part o the system.

CDI accreditates inspectors and acilitates the distribution o assessment results.

Chemical companies or consignors can initiate an assessment and/or request the assessment results rom the

ships owner.

Appendix5Guide or the marine chartering and handling o Propylene Oxide


45/6645

Appendix 6 A Saety Scheme or the reception and storage acilitiesat Propylene Oxide customers

1 ESAD / SQAS Guidelines

The European Single Assessment Document (ESAD) and the Saety & Quality Assessment Scheme (SQAS) have been

developed jointly by chemical suppliers and distributors or use in one single assessment o distributors, oering

simultaneously a measurement o the commitment o distributors to their Responsible Care Programme a commontool or suppliers to evaluate, against their individual requirements, the saety, health and environmental perormance

o their distributors.

2 Purpose

The Cec Propylene Oxide Sector Group has developed a specic checklist or Propylene Oxide, which should be used or

sel-auditing by the customer. It can also be used as a guideline or the saety service o the supplying company.

3 Scope3.1

This scheme shall apply to the reception o Propylene Oxide by road and rail at all customers.

3.2

The principal objective is to ensure that the transer o Propylene Oxide rom the delivering vehicle to the storage

tank can be carried out saely. However, because the storage system and procedures may aect the saety o the

unloading operation, these also need to be considered.

3.3

The scheme should also be used to:

a) Assess and record any changes in policy, attitude or equipment since the previous check.

b) Obtain customers comments on the transport operation and equipment being used.


46/6646

Propylene Oxide unloading/storage checklist

1. THE UNLOADING AREA

1.1 Ease o access

1.2 Housekeeping

1.3 Separation rom other activities

1.4 Ability to mobilise and remove road tanker/RTC in case o emergency

1.5 Facilities to isolate area and restrict access

1.6 Fire water / oam systems

1.7 Electrical classication

1.8 Minimum saety distances according to national regulations between the ofoading point and:

Storage

Ignition source

Boundary ence/or other acilities

1.9 Adjacent ofoading points

1.10 Hoses / loading arms / dry disconnect coupling

1.11 Earthing Point

1.12 Pipe damage protection

1.13 Other vehicles/ork lit truck movements

1.14 Communication systems

1.15 Shutdown systems

2. UNLOADING

2.1 Personnel and equipment

2.2 The presence o customers operator

2.3 Operators competence

2.4 Deputy availability

2.5 Hose testing and renewal policy

2.6 Selectivity code o dry disconnect coupling

2.7 Fixed loading arm testing and maintenance

2.8 Availability o suitable saety equipment

2.9 Unloading lines should be properly labelled as Propylene Oxide

OPERATIONS

2.10 Written procedures

2.11 Hose purging and leak testing

2.12 Sampling procedure

Appendix6A Saety Scheme or the reception and storage acilities


47/6647

2.13 Atmospheric/personal Propylene Oxide exposure monitoring

2.14 METHOD OF UNLOADING:

Nitrogen Pressure

Pump

2.15 Use of rail hook (for LG equipment)

2.16 Safeguards for pump

2.17 Emergency response

3. NITROGEN SUPPLY

3.1 Source of nitrogen

3.2 Protection of nitrogen purity

4. STORAGE TANK

4.1 LOCATION

Bundled area

Shared

If shared, with what? Are they compatible?

Separation distances

Emergency disposal facilities

4.2 CONSTRUCTION

Insulated

Un-insulated

Refrigerated

Fire water / foam availability

Earthed

Maximum pressure rating

Maximum allowed working pressure

Date and type of last test/inspection

Dip inlet pipe

4.3 RELIEF VALVES Separate

Combined with interlock

Size

Venting to:

- Stack

- Scrubber

- Other

Flame traps

Nitrogen purged vents

Appendix6A Safety Scheme for the reception and storage facilities


48/6648

4.4 INSTRUMENTATION

Nitrogen padding pressure

Control points:

-Temperature

-Pressure

-Level

Alarm settings:

-Temperature

-Pressure

-Level

Are control systems, and alarm systems independent?

4.5 MONITORING OF STORAGE

Temperature

Pressure

Available ullage (available space) in the tank

5. STORAGE TANK TO PROCESS

Precaution to prevent backfow rom plant streams contaminating storage vessels

Measures to prevent contamination via the vent gas system

6. PROCEDURES

There should be written procedures available or the ollowing:

Unloading Propylene Oxide

Testing, inspection and maintenance o equipment

Emergency

7. COMMENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



49/6649

Guidance notes or Propylene Oxide unloading/storage checklist

1. THE UNLOADING AREA

1.1 There should be sucient space or easy vehicular access.

1.2 Unless it is connected to the unloading acilities, it should be possible or the vehicle to be removed

rom the unloading area in the case o an emergency. I it is connected to the unloading acilities, then

the emergency arrangements should take account o the contents o the vehicle.

1.3 Barriers, warning notices (e.g. no access; no smoking) are required. Special consideration may need to

be given to prevent shunting close to the unloading area.

1.4 There should be a re ghting system. Preerably this should be a permanent installation over/around

the unloading area. Strategically placed re hoses/monitors ready or use are acceptable.

1.5 The electrical classication shall be EX D2 G4; Division 1/Class C or equivalent.

1.6 All unloading points must be clearly labelled. I compatible substances are unloaded in the Propylene

Oxide area procedures and/or engineering controls should be in place to avoid unloading o Propylene

Oxide into wrong tanks.

1.7 Hoses or unloading arms should preerably be o stainless steel or so called Cryofex. They should

be dedicated to Propylene Oxide, have suitable gaskets (spirally wound PTFE or equivalent), have

Propylene Oxide selective dry disconnect couplings and stored in such a way that contamination and

damage will be prevented.

1.8 The earthing point should be checked on a regular basis.

2. THE UNLOADING

2.1 The driver should be available during ofoading and within sight o his vehicle or emergency reasons.

He should not be in the cabin o his truck. Drivers must report back to the principal / consignor i

noticed that unloading conditions do not meet the necessary saety requirements.

2.2 The customers operator must be present during o-loading or equivalent control measures executed

e.g. such as camera supervision rom a remote location and remote process control.

2.3 & 2.4 There should be at least two trained deputies to provide cover or illness and holidays.

2.5 The test pressure o the hoses should not be less than 1.3 times the maximum design working

pressure. The requency o testing is recommended as at least every 12 months.

2.6 Dry disconnect couplings with PO selectivity keys must be used.

2.7 Hoses must be purged with nitrogen and leak tested beore commencing the discharge.

2.8 Air breathing sets with eye coverage, protective suits, boots and gloves o suitable material should

be readily available (butyl rubber has been ound to give the best degree o protection. Neoprene or

natural rubber may also be considered or protective clothing, but may not remain as vapour-tight as

butyl rubber, particularly ater continued use. PVC oers only very limited resistance).

A saety shower and eye ountain should be sited adjacent to the unloading area.

2.9 - 2.12 No additional comments.

2.13 I unloading is by pump, a dedicated vapour return system (balance line) should be used.

2.14 Rail hook only in connection with LG equipment (see chapter 4.1).



50/6650

3. NITROGEN

3.1 The purity o the nitrogen must be maintained.

3.2 The nitrogen should preerably be supplied by a separate and independent dedicated supply system.

The Propylene Oxide nitrogen supply system must not be shared with supplies to amines, acids or

other catalysts or Propylene Oxide polymerisation.

3.3 Ideally the supplies or storage and the plant should be taken rom two completely independent

sources. I this is not possible or the system is shared the integrity o the nitrogen supply system must

be protected.

3.4 All nitrogen lines to storage and to process must be tted with back fow protection or instance suchas double block and bleed systems activated by a low positive pressure dierence across the valves.

4. THE STORAGE TANK

Some o this section alls outside the unloading saety checking procedure. However, the inormation is useul both

rom saety and quality viewpoints. It also provides inormation on the customers competence and attitudes to

saety.

4.1 No additional comment.

4.2 Storage tanks are either pressure tanks or temperature controlled.

Insulation is normally not required. However in case it has been installed, procedures shall be in place

to detect and control under-insulation corrosion (e.g., wall thickness test or visual inspection).Especially in hot climates, rerigeration and / or closed cell structure insulation should be considered.

4.3 Relie valves should be large enough to meet local regulatory requirements e.g., the requirements or

re engulment.

4.4 Level alarms are required.

Procedures must be present which prevent tanks overlling.

4.5 The temperature and pressure o the storage tank should be monitored regularly.

5. STORAGE TANK TO PROCESS

Back fow and contamination prevention is essential.

Similar equipment to that used or maintaining the nitrogen integrity should be used.



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Appendix 7 Design and construction o rail tank cars

It is recommended that the companys technical railtankcar experts will use the ollowing list o key railtankcar

specications in the contractual agreement with the dierent railtankcar lessons.

General recommendations1

Tanks are generally constructed o carbon steel. No bafe plates are to be tted.

2

Top or bottom loading/unloading acilities are used, depending on customer requirements.

(General practise in Europe is bottom unloading)

3

Sloped bottom to outlet to provide complete unloading.

4In case o top loading/unloading acilities:

Maintenance platorm around top nozzles and manhole with galvanised anti-slip-grating and a kick

plate. The holes in the grating must be sucient to allow access or fange bolting.

The top valves shall be designed in the longitudinal direction to allow operation o xed liquid and

vapour arms.

One ladder with access to the platorm shall be provided.

Internal ladders are not recommended, as they will hinder the use o proessional cleaning equipment.

5

Earthing connections shall be provided to prevent dangerous dierences in electrical potential arising between the

carrying tank, the body o the vehicle, the piping and the ground during the lling or discharging o the vehicle.

Connections should be provided at each end o the tank and also adjacent to the discharge connections.

6

All valves shall be o a leak-tight design and have a dry-disconnect coupling + pressure cap or cover plate.

Valves packing must be resistant to Propylene Oxide and all valves must be o a re-sae design.

7

Insulation is not required, however i installed, veriy protection/inspection o carbon steel corrosion underthe insulation.


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8

The right ront side o the railtankcar shall be provided with a ladder and handgrips or the shunter.

9

Gaskets: PTFE, PTFE spiral wound or other PO compatible material.

10

Tank design according to ADR/ RID is L4BN (L= Liquid; 4= minimum calculation pressure 4 bar; B= bottom

unloading and 3 independent closures; N = tank without a venting system according to 6.8.2.2.6 and nothermetically closed). This requirement is met by both LG and BL railcar types.

11 Equipment11.1 PRESSURE RELIEF DEVICES

No pressure relie devices shall be tted.

11.2 FILLING/DISCHARGE AND VAPOUR RETURN FITTINGS

11.2.1 The tank must be tted with a DN80 lling / discharge pipe with a shut o valve. The vapour

return connections shall be a DN50 pipe, tted with a shut o valve. Valves shall be o an approved

make & type, e.g. bellow valve.

11.2.2 In addition, a quick closing internal saety device shall be tted in the tank shell or the liquid

lling/discharge connection. The device shall be capable o being operated remotely. The device shall

also close automatically in the event o a hose rupture or the inadvertent movement o the rail tank car.

The valve actuator shall consist o a hydraulic system.

11.2.3 Both the lling/discharge and vapour return connections are equipped with PO selective dry

disconnect coupling (NATO standard 3756) and a pressure retaining cap. Materials o connections must

be similar to that o the tank shell. It is recommended to maintain the shut o valve in addition to the

dry disconnect coupling.

11.2.4 Connections should be adequately protected against possible impact that may occur during

transport. This protection could be provided by means o a strong steel guard or by utilising the chassis

o the vehicle. Both the liquid and vapour connections shall be clearly marked by their name (liquid/

vapour). To ensure that the oot valves/internal saety devices remain closed should either o the

connection pipes be damaged, the design should be such that i the pipes are subjected to excessive

strain, the tank shell remains undamaged. Connection pipes, fanges and valves shall be suitable or thesame test pressure as the tank shell.

11.3 INTERNAL VAPOUR RETURN PIPE

11.3.1 The tank pipe shall be tted with a DN50 internal vapour return pipe which shall extend rom the

oot valve/internal saety device to the vapour space. The pipe shall be designed to restrict liquid entry

and shall be supported so as to withstand any vibration during movement o the rail tank car.

12For inspection purposes, the tank shall be tted with one manhole not less than 500 mm diameter (gas type

RTCs only), the manhole shall be ully bolted and may have a hinged design (right hand side).

Appendix7Design and construction o rail tank cars


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Appendix 8 Design and construction o tank trucksand tank containers

It is recommended that the companys technical tank truck / tank container experts will use the ollowing list in the

contractual agreement with the dierent road carriers.

General recommendations1

Stainless steel tank material is preerred, in order to acilitate cleaning operations.

2

Bafes may need to be tted to meet the requirements o transport regulations. However, the number o bafe

plates should be kept to a minimum, as they may hinder proessional cleaning operations.

3

Bottom loaders / unloaders are preerred; they prevent working on top o the truck / container.

4Top loading/unloading acilities are acceptable: At least one walkway o anti-slip grating shall be provided on top

o the tank to give access to the top nozzles and man way. The walkway on tank trucks should be tted with a

collapsible handrail, and be reached by an open rung access ladder.

5

All valves shall be leak tight, resistant to Propylene Oxide and made o re-sae design.

6

Earthing connections shall be provided. These connections shall not be painted.

7

Gaskets: PTFE, PTFE spiral wound or other PO compatible material.

8

UN tank instructions: T 11


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9 Equipment 9.1 PRESSURE RELIEF DEVICES

Any pressure relie design must be in line with the requirements o the ADR / RID and the IMDG-Code.

9.2 FILLING / DISCHARGE AND VAPOUR RETURN FITTINGS

9.2.1 The tank must be tted with a DN80 lling / discharge pipe with a shut o valve. The vapor return

connections shall be a DN50 mm pipe, tted with a shut o valve. Valves shall be o an approved make

and type.

9.2.2 In addition, a quick closing internal saety device would be recommended in the tank shell or the

liquid lling/discharge connection. The device shall be capable o being operated remotely. The device

shall close automatically in the event o a hose rupture and it is recommended that it closes automaticallyin case o inadvertent movement o the road tankers/tank containers. The valve actuator shall consist

preerably o a hydraulic system.

9.2.3 Both the lling/discharge and vapor return connections are equipped with Propylene Oxide selective

dry disconnect coupling (NATO standard 3756) and a pressure retaining cap. Materials o connections

must be similar to that o the tank shell. It is recommended to maintain the shut o valve in addition to

the dry disconnect coupling

9.2.4 Connections should be adequately protected during transport. For tank containers, all connections

should be contained within the ISO ramework. Both the liquid and vapor connections shall be clearly

marked by their name (liquid/vapor). These connections should be provided with means to prevent

unauthorized access.

9.3 INTERNAL VAPOR RETURN LINE

The tank pipe shall be tted with a DN50 internal vapor return line which shall extend rom the oot valve/internal saety device to the vapour space. The pipe shall be designed to restrict liquid entry and shall be

supported to withstand any vibration during movement o the road tankers / tank container.

Appendix8Design and construction o tank trucks and tank containers


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Appendix 9 Design and construction o vessels and barges

1 Vessels

Detailed Requirements or Marine movements o Propylene Oxide in gravity Vessels are contained in the International

Code or the Construction and Equipment o Ships Carrying Dangerous Chemicals in Bulk, under Chapter 15: Special

Requirements. The 30 Topics list include requirements on design, inspection on cleaning quality prior to initial loading,cargo segregation, loading/unloading operations, rerigeration and nitrogen padding. The key requirements or

Chartering and Handling are described in appendix 4.

2 Barges

The product specic requirements mentioned or vessels are also recommended or barge movements. In general these

detailed requirements can best be met by using LPG Type Barges. It is recommended to consider using this barge type.

3 Vessels and BargesSpecial attention shall be given to:

Ship-Shore saeguarding systems

Leak tight fanges o dome covers

In line-sample systems


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Appendix 10 General Guidelines or design and constructiono Propylene Oxide storage tanks

1 Location o storage tanks1.1

The arrangement and lay out o storage tanks should take into account:

a) Normal operation

b) Emergency operation

c) Fire ghting activities

1.2

The design o the tank arm should take account o the likely consequences o any accidental spillage or re.

Products that react chemically with Propylene Oxide, such as oxidants, acids, anhydrides, chlorine, and ammonia,

should be kept in total segregated storage.

1.3

Storage tanks shall be located away rom potential sources o ignition, and in a position so as to minimise theeect o radiation rom any re which could possibly occur in an adjacent area.

1.4

Storage tanks shall be discharged by pump. Tanks should not be elevated to allow gravity discharge, because o

the diculties o stopping gravity fow in the event o a re.

1.5

Every tank shall be sited on an impervious base and should be surrounded by a bund wall capable o containing

110 % o its contents in the event o spill or leak. The walls and foor o the bund should be impervious to liquid

and designed to withstand a ull hydrostatic head. Bund walls should be designed to ensure adequate natural

ventilation o the bunded areas, ready access or re ghting, and good means o escape in any emergency

situation.

1.6

Intermediate lower bund walls are recommended to divide tanks into groups to contain any accidental leakage

and to minimise the surace area o any spillage. I tanks share a common diked area, products within the area

should be chemically compatible.

1.7

The foor o the bund shall be sloped to prevent minor spillages remaining below any tank. Provisions should be

made or the removal or drainage o surace water rom the area within the bund. Preerably, surace water shouldbe pumped out o the bund with an appropriate pump. I bund drains are used, they shall be provided with valves

outside the bund wall, with procedures in orce to ensure these valves remain closed, except when draining is

being removed.


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Appendix10Design and construction o Propylene Oxide storage tanks

1.8

No combustible materials, equipment, etc. shall be stored in the bund or against the bund wall.

2 Tank construction2.1

The tank shall be o adequate strength and capacity or the proposed duty. The tank and its supports shall

be designed and constructed in accordance with an appropriate nationally recognised standard o good

engineering practice.

2.2

Copper and copper containing alloys shall not be used in Propylene Oxide service.

2.3

Storage tanks should be compatible with shipping and/or receiving requirements.

2.4

Vapour control systems shall meet local and/or governmental regulations. The vent system discharge should be

preerably into a closed system or an atmospheric discharge at a sae distance rom possible ignition sources.

2.5

Carbon steel storage tanks are generally the most economical or Propylene Oxide. Vertical storage tanks are oten

used or large volume storage. Horizontal tanks are also satisactory or bulk storage, but these are generally used

or small installations.

2.6

Tank lling shall be either rom the bottom or with a vertical pipe extended to a designed distance rom the tank

bottom. It will ensure that Propylene Oxide can not all reely through the vapour space with the hazard o

electric discharges.

2.7

Insulation is normally not required, however in case it has been installed, inspection procedures shall be in place

to detect and control corrosion. Closed cell structure insulation is recommended, as it does not lower the sel-

ignition temperature o Propylene Oxide in case o leakage.

2.8

In hot climate, large tanks with low throughput shall be protected against direct sun heating by using refecting

paint, a sun protection roo, or equivalent. In case o extreme high temperatures, insulation and a separate

cooling-unit is recommended.

2.9

An accessible manhole o minimum 500 mm diameter shall be provided on all tanks to allow or internal

inspection and cleaning.


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2.10

Design o new storage tanks shall be based on ull draining concept, sloped to outlet with no trapped areas.

Eliminate "dead spots" o liquid and vapour phase in the system.

2.11

It is normal practice to t tanks, which are storing highly fammable liquids, with a pressure relie valve (PRV) to

protect the tank against overpressure. The design shall be according good engineering practice. For new tanks a

rupture disc under the saety valve may be considered. This design eliminates the need or vent purging.

2.12

Each tank shall have a designed earthing system. Resistance to earth to be checked at least annually.

3 Storage tank engineering controls

Level, pressure and temperature measurement, nitrogen padding system

3.1

Storage tanks shall be provided with a suitable means o determining the liquid level, the pressure and the

temperature in the tank.

3.2

Audible high level alarms, which automatically shut down the unloading process in the event o overll, are

strongly recommended. High/low pressure and high temperature alarms shall be tted.

3.3

All storage tanks should contain local temperature and pressure indicators and temperature sensors or remote

readings. It is recommended that level, pressure, and temperature recording equipment is provided in the

control room.

3.4A separate and preerably independent, dedicated nitrogen padding system shall be installed. The system design

must prevent backfow.

I the prevention o a vacuum cannot be guaranteed, the tank should also be protected against vacuum with a

vacuum-breaking valve.

3.5

It is desired to install either a low pressure snung steam system or nitrogen purge to all saety valve discharges.

It will allow or dilution o potential Propylene Oxide vapours, especially during lightning. Design snung steam

systems on reezing weather conditions.

Appendix10Design and construction o Propylene Oxide storage tanks


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4 Pipelines4.1

All pipelines shall be adequately grounded, to discharge static electricity saely.

4.2

The tank discharge line shall be designed with an emergency block valve (EBV) which will shut o the tank

contents in case o an emergency.

4.3

It is recommended that all gaskets used in the handling o Propylene Oxide are made o PTFE, stainless steel

spiral wound with external guide-ring, or equivalent.

4.4

Wherever possible, continuous welded pipelines should be used. However where pipelines have to be

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