D appendix i dow req for alk oxides

ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL APPENDIX Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R I DOW PRODUCT SPECIFIC REQUIREMENTS FOR BULK MARINE SHIPMENTS ALKYLENE OXIDES BY CHEMICAL TANKERS AND LPG VESSELS LIST OF APPLICABLE PRODUCTS SPECIFIC VESSEL REQUIREMENTS CARGO TANK LININGS PRIOR CARGOES AND CONTENTS ADJACENT CARGO DENSITY TABLES WALL WASH TEST PROCEDURE LIST OF APPLICABLE PRODUCTS ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R  Propylene Oxide  Butylene Oxide  Mixtures of Propylene and Ethylene Oxide containing up to 26% Ethylene Oxide  SPECIFIC VESSEL REQUIREMENTS Cargo Tanks Stainless steel cargo tanks or carbon steel tanks are acceptable Carbon steel tanks with suitable zinc based coating may be acceptable Cargo system must be able to maintain carriage temperature limits Cargo tank insulation, if installed, must be a closed cell non-absorbent insulation such as urethane, foam glass, ceramic foam or a block perlite type insulation system Magnesia insulations are not acceptable Cargo cooling facilities are acceptable using R-12, R-22, R-134a or a glycol-water system Other refrigerants are only acceptable if they have been approved by the Chlorohydrin Technology Center Cooling equipment and / or insulation may be omitted when climatic conditions, length of voyage and other factors warrant These exceptions will be made on a case by case basis and specific written approval is required from the Supply Chain and the Chlorohydrin Technology Center In case of Propylene Oxide such exception has been made and is described in point Vessel Specifics for Propylene Oxide Vessels to be used to carry Propylene Oxide and which are not equipped with an on-board cargo cooling system can only be utilized if the following requirements are fully met: a The Vessel Owner warrants that vessels used are approved (Certificate of Fitness) for carriage of Propylene Oxide in tanks having at least 0.6 bar pressure rating b That the respective Classification Society and, when entering United States ports, the United Coast Guard approve using sea water spray deck cooling c That the Vessel to be used is equipped with a separate independent sea water pump and lines for deck cooling, to ensure that primary fire fighting system is not relied upon for cooling d Copies of the ship’s logs used to record information about the Propylene Oxide cargo and ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R tanks utilized for that cargo will be furnished to Charters for review, until further notice 2.1Cargo Pumps Separate hydraulic or electric deepwell pumps for each cargo tank are required Pump room ships with common pumps or booster pumps are not acceptable 2.2Liquid Line System Liquid lines and stripping lines should be constructed of carbon steel or of stainless steel Dedicated seamless stainless steel hoses and Teflon lined composite chemical hoses (e.g Chemflex) are suitable Segregation of Liquid Line System Separate lines and manifold connections are required SEUT Blind Flange Valves are only acceptable in combination with spectacle blanks on both sides Modified Seutelven (SEUT) Blind Flange Valves may be acceptable The term “modified” refers to the use of a valve disc assembly that has two permanently attached pins of sufficient length and diameter to prevent the installation of both the valve flange cover and drain plug when the valve is being used as an isolating device Vapor Line System Vapor lines should be constructed of carbon steel or of stainless steel Dedicated seamless stainless steel hoses and Teflon lined composite chemical hoses (e.g Chemflex) are suitable Segregation of Vapor Line System A separate vapor line system is required Seutelven (SEUT) Blind Flange Valves are only acceptable in combination with spectacle blanks on both sides Modified Seutelven (SEUT) Blind Flange Valves may be acceptable Vapor Emission Control Controlled venting is required Uses of a vapor return system to / from shore storage tank is recommended Gaskets Gaskets throughout the Alkylene Oxides cargo system must be stainless steel spiral wound PTFE filled Other fluorocarbon fill or graphite fibers on steel supports type gaskets are acceptable ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R provided they meet applicable IMO or U.S Coast Guard regulations and are approved by IMO or U.S Coast Guard Double woven PTFE gaskets, which are installed in manholes and cleaning openings, are only acceptable, if the inner gaskets are new or dedicated for Alkylene Oxide and the outer gaskets are gas-tight and suitable for Alkylene Oxides Single woven PTFE gaskets are not acceptable Utility Systems Heating coils operated with steam and hot water must be emptied, purged and segregated before loading Heating coils operated with fluid system must be segregated prior to loading All cargo tanks must be fitted with an automated nitrogen pad system of sufficient capacity to maintain the cargo tanks at a sufficient over pressure during the entire voyage The minimum recommended pressure is 0,15 to 0,20 bar The oxygen content in the nitrogen must be less than 0.05% (500 ppm) Inert gas generator is not acceptable and must be segregated Flue gas as inert gas is not acceptable and must be segregated Vapor re-compression is not allowed and system must be segregated Monitoring Each cargo tank must be fitted with a fixed level indicator with high level and high high level alarm Each cargo tank must be fitted with a fixed temperature device with high temperature alarm to measure the liquid temperature at a minimum of two levels Each cargo tank must be fitted with a fixed pressure device with high and low pressure alarm to measure the vapor space pressure in each cargo tank Documents for the settings and testing must be provided on request Liquid and Vapor Sample Points All cargo tanks should be equipped with a closed sampling device at the discharge line and with a vapor sample point Each ballast tank and / or void space should have installed a vapor sample point Tank Inspection To verify the cleanliness of the cargo tanks and depending on previous cargoes a wall wash test may be performed ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R Preparation for Loading Cargo tanks and piping system must be purged with nitrogen to an oxygen content of less than 0.5 % (5,000 ppm) oxygen before loading is commenced For all Propylene Oxide shipments into the Dow Polyurethane business it is mandatory that the vapor space of the cargo tanks are purged to less than 0.05% (500 ppm) oxygen before the ship departs Recommended practice is to add nitrogen through the liquid line (nitrogen bubbling) to stabilize the pressure condition during the voyage The nitrogen must contain less than 0.05% (500 ppm) oxygen with a minimum purity of 99,99% nitrogen Opening of tanks or the line system must be avoided after completion of nitrogen purging Void spaces around cargo tanks must be purged with nitrogen to less than 2% (20,000 ppm) oxygen Void spaces on gas tankers, which are equipped with independent type C tanks must not be purged On these gas tankers a functioning gas monitoring system must be installed in the void space Unmanned barges shall be nitrogen purged to above limits and sealed prior to departure A continuous positive nitrogen pad is ideal but not required Loading on Heels / Commingling Loading on a heel, residue, partial cargo or commingling with other products is only allowed, if a specific approval of the Business Quality Leader (BQL) or the respective Quality System Specialist (QSS) has been obtained Cargo Transfer Cargo loading should start at a reduced rate until sufficient level is reached in the cargo tanks to obtain samples and until the loading line is completely submerged After the foot samples have been taken loading must be discontinued until the analytical results are received and that the product meets the agreed product specification Final samples are taken from each cargo tank and individual analyzed Vessel should only be released after analyses are completed or if approved by the respective plant quality representative At the receiving location a sample will be taken from each compartment and analyzed before any product can be discharged If a vapour return line will be used allow always a positive replenishment of the vapor in the cargo tanks If vapor balancing is to be used with the shore tank, use caution that the atmosphere in the marine vessel is inerted before any vapor (not liquid) is transferred into the storage tank Also pay attention to the pressure of the shore tank AND the ship tank before vapor balancing is started The ship should arrive at port with tank pressures not to exceed the pressure of the shore tanks that will receive the material ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R CAUTION: A sudden termination of flow at high load rates may result in a surge effect and subsequent failure of shore facility systems Communication systems or methods must be established prior to the beginning of flow to allow this termination to be initiated at the shore pump Cargo Custody The vessel has to maintain a sufficient positive nitrogen pad during the entire voyage The minimum recommended pressure is 0,15 to 0,20 bar The cargo must not exceed following temperatures during the entire voyage:  Propylene Oxide 25° C  Butelyne Oxide 35° C  Mixed Oxide 20° C The vessel has to maintain a pressure and temperature log for the entire voyage A copy of the log must be attached to the surveyor's report The log's should include product name, tank number, initial tank pressure and temperature, date and time when measurements are taken with the respective tank pressure and temperature, nitrogen supplied yes/no, and any exceptions  CARGO TANK LININGS  Linings on cargo tanks to be loaded with Alkylene Oxides must be compatible with Alkylene Oxides The vessel operator warrants that the linings are fully suitable for the cargo to be loaded and 98% intact with no active rust or flaked areas Zinc based coatings are normally acceptable In case of any questions or doubts about the suitability of the lining the respective BQL or QSS or his / her designated representative shall be contacted  PRIOR CARGOES AND CONTENTS Tanks to be loaded with Alkylene Oxides must not have contained any material on the last three previous cargoes known to catalyze the reaction of Alkylene Oxides, such as acids and alkalis unless adequate cleaning and inspection is possible and procedures to effect this have been issued Loading Alkylene Oxides behind amines, ammonia, and oxidizing substances as one of the last three previous cargoes is not permitted As reference also review the U.S Coast Guard compatibility charts (Title 46, Code of Federal Regulations, part 150, latest edition) Prior cargoes of vinyl chloride monomer, butadiene, isoprene or styrene containing the polymerization inhibitor tertiary butyl catechol (TBC) have resulted in contamination of Alkylene Oxides cargoes and need therefore a specific cleaning process to prepare for Alkylene Oxide cargo Refer to cleaning section on following pages To maintain the product quality of the Alkylene Oxides following restrictions on previous cargoes will be applied ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R The following tables to provide an overview on restrictions on previous cargoes If there are any doubts or questions related to previous cargoes, a representative from the Chlorohydrin Technology Center, the Business Quality Leader, or the Quality System Specialist must be consulted The Chlorohydrin Technology Center must approve exceptions to these restrictions Exceptions will only apply for the one case and can not be considered as standard practice for any future application                                                          TABLE 1 LIST OF ACCEPTABLE PREVIOUS CARGOES - Stainless Steel, Carbon Steel and intact suitable Coatings Ethylene, Propane, Propylene, Butane, , LPG's, Acrylates, Glycols, Ketones, Alcohols, Benzene, Toluene, Chlorinated Solvents, TABLE LIST OF PREVIOUS CARGOES WHICH MAY BE ACCEPTABLE AFTER SPECIFIC LEANING PROCEDURE - Stainless Steel and Carbon Steel     Acids (e.g acetic acid and phosphoric acid) Caustic alkalis: e.g caustic soda, sodium hydroxide, potassium hydroxide Butadiene, Styrene Prior cargoes containing Tertiary Butyl Catechol (TBC) as inhibitor TABLE LIST OF NOT ACCEPTABLE PREVIOUS CARGOES  Nitric Acid  Ammonia and ammonia solutions  Amines and amines solutions: e.g Ethylamines, Propylamines, Ethyleneamines, Methyleneamines Other oxidizing substances (e.g sodium or potassium chlorate)  ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R In aforementioned tables due consideration has been given to specific cleaning  procedures of the cargo system depending on the material of construction and  coating / lining for cargo tanks and line system Any specific cleaning procedure has to be carried out in addition to the normal tank cleaning procedure and requires at least the following:  The vessel operator must have a written detailed cleaning procedure, describing each single washing step including the sequence with time, pressure, temperature, checks etc  Cargo tanks must be cleaned in a sufficient and appropriate way A wall wash test will be performed by the Dow representative or the surveyor to verify the cleanliness of the respective cargo tank  Pumps, lines, manifold and valves must be proper cleaned under sufficient pressure and time e.g by re-circulation  The use of a suitable and IMO approved cleaning agent is recommended  The cleaning process must be documented according to the sequence of the procedure and has to be presented on request to the Dow representative or the Dow appointed surveyor at the load port  If a specific cleaning procedure was applied and table is applicable, the cleaning procedure will be discussed with the Dow marine representative and/or the Dow appointed surveyor before inspection of the cargo system For prior cargoes containing TBC as inhibitor, a thorough methanol wash followed by a water wash has been effective in removing polymerization inhibitor residues Cargo tanks with extensive internal structural members or heavy rust accumulations will be extremely difficult to clean A water wash only will not effectively remove TBC residues Alkylene Oxides vapors are highly soluble in water Therefore particular caution must be taken if water is introduced in a tank containing oxide vapor Water injected through a spray system or cleaning machines could result in a collapse of the tank The owner or master of the ship should be cautioned to exercise care in cleaning and washing tank to avoid creating a vacuum within the cargo tank Use of an inert gas system is an acceptable method of purging tanks for cleaning The selection of the proper cleaning process and the cleaning is the sole responsibility of the vessel operator Any product contaminated due to improper cleaning will be charged to operators account If the cargo tank last contained Alkylene Oxides and has not been cleaned since discharge, the heel, residue or partial cargo and the vapor phase will be sampled to determine whether ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R or not it may contaminate the cargo to be loaded into the tank If a sample is found to be unsuitable the tank and cargo lines will have to be cleaned prior to loading Exceptions to this requirement, if e.g a vessel / barge is in a dedicated product service, should be in agreement with the BQL, QSS or his / her designated representative and be covered by a specific procedure  ADJACENT CARGO  Products having known reactivity with each other must not be loaded into adjacent cargo tanks which share a common bulkhead, pump or transfer piping (examples of reactive chemicals are listed in Tables and 3) Adjacent cargo tanks that share a common bulkhead should not be heated above a max +25 °C (Note the vapor pressure of Propylene Oxide is 760 mm Hg at +34.5 °C.) DENSITY TABLES PROPYLENE OXIDE DENSITY (lb/gal) VERSUS TEMPERATURE (deg C) CALCULATED FROM THE QUADRATIC EQUATION in ML- AL 85-40456 Conversion factor: (g/cc)/.1198264 = lb/gal from Perry’s th Ed Pg 1-6 Kenneth McDonald, COG Technology Center in VACCUM Tenths = Degree s 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 10 11 12 13 14 15 16 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 7,1266 7,1165 7,1064 7,0963 7,0861 7,0760 7,0658 7,0555 7,0453 7,0350 7,0248 7,0145 7,0041 6,9938 6,9834 6,9730 6,9626 ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL 17 18 19 20 21 22 23 24 25 26 27 28 29 30 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 Form Issue Date Approved 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 : : : : GOM 002 05-05-02 M.J.R 6,9521 6,9416 6,9311 6,9206 6,9101 6,8995 6,8889 6,8783 6,8676 6,8570 6,8463 6,8356 6,8248 6,8141 PROPYLENE OXIDE DENSITY (g/ml) VERSUS TEMPERATURE (deg C) CALCULATED FROM THE QUADRATIC EQUATION in ML- AL 85-40456 Kenneth McDonald, COG Technology Center in VACCUM Tenths = Degree s 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 10 11 12 13 14 15 16 17 18 19 20 21 0,8539 0,8527 0,8515 0,8503 0,8491 0,8479 0,8467 0,8454 0,8442 0,8430 0,8418 0,8405 0,8393 0,8380 0,8368 0,8355 0,8343 0,8330 0,8318 0,8305 0,8293 0,8280 0,8538 0,8526 0,8514 0,8502 0,8490 0,8478 0,8465 0,8453 0,8441 0,8429 0,8416 0,8404 0,8392 0,8379 0,8367 0,8354 0,8342 0,8329 0,8317 0,8304 0,8291 0,8279 0,8537 0,8525 0,8513 0,8501 0,8489 0,8476 0,8464 0,8452 0,8440 0,8427 0,8415 0,8403 0,8390 0,8378 0,8365 0,8353 0,8340 0,8328 0,8315 0,8303 0,8290 0,8278 0,8536 0,8524 0,8512 0,8500 0,8487 0,8475 0,8463 0,8451 0,8438 0,8426 0,8414 0,8401 0,8389 0,8377 0,8364 0,8352 0,8339 0,8327 0,8314 0,8302 0,8289 0,8276 0,8535 0,8523 0,8510 0,8498 0,8486 0,8474 0,8462 0,8449 0,8437 0,8425 0,8413 0,8400 0,8388 0,8375 0,8363 0,8350 0,8338 0,8325 0,8313 0,8300 0,8288 0,8275 0,8533 0,8521 0,8509 0,8497 0,8485 0,8473 0,8461 0,8448 0,8436 0,8424 0,8411 0,8399 0,8387 0,8374 0,8362 0,8349 0,8337 0,8324 0,8312 0,8299 0,8286 0,8274 0,8532 0,8520 0,8508 0,8496 0,8484 0,8472 0,8459 0,8447 0,8435 0,8422 0,8410 0,8398 0,8385 0,8373 0,8360 0,8348 0,8335 0,8323 0,8310 0,8298 0,8285 0,8272 0,8531 0,8519 0,8507 0,8495 0,8483 0,8470 0,8458 0,8446 0,8434 0,8421 0,8409 0,8396 0,8384 0,8372 0,8359 0,8347 0,8334 0,8322 0,8309 0,8296 0,8284 0,8271 0,8530 0,8518 0,8506 0,8493 0,8481 0,8469 0,8457 0,8445 0,8432 0,8420 0,8408 0,8395 0,8383 0,8370 0,8358 0,8345 0,8333 0,8320 0,8308 0,8295 0,8283 0,8270 0,8529 0,8517 0,8504 0,8492 0,8480 0,8468 0,8456 0,8443 0,8431 0,8419 0,8406 0,8394 0,8382 0,8369 0,8357 0,8344 0,8332 0,8319 0,8307 0,8294 0,8281 0,8269 10 ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL 22 23 24 25 26 27 28 29 30 0,8267 0,8255 0,8242 0,8229 0,8216 0,8204 0,8191 0,8178 0,8165 0,8266 0,8253 0,8241 0,8228 0,8215 0,8202 0,8190 0,8177 0,8164 0,8265 0,8252 0,8239 0,8227 0,8214 0,8201 0,8188 0,8175 0,8162 0,8264 0,8251 0,8238 0,8225 0,8213 0,8200 0,8187 0,8174 0,8161 0,8262 0,8250 0,8237 0,8224 0,8211 0,8199 0,8186 0,8173 0,8160 0,8261 0,8248 0,8236 0,8223 0,8210 0,8197 0,8184 0,8172 0,8159 0,8260 0,8247 0,8234 0,8222 0,8209 0,8196 0,8183 0,8170 0,8157 Form Issue Date Approved 0,8259 0,8246 0,8233 0,8220 0,8207 0,8195 0,8182 0,8169 0,8156 0,8257 0,8245 0,8232 0,8219 0,8206 0,8193 0,8181 0,8168 0,8155 : : : : GOM 002 05-05-02 M.J.R 0,8256 0,8243 0,8231 0,8218 0,8205 0,8192 0,8179 0,8166 0,8153 11 ZODIAC MARITIME AGENCIES LTD GAS OPERATIONS MANUAL Form Issue Date Approved : : : : GOM 002 05-05-02 M.J.R WALL WASH TEST PROCEDURE Scope This procedure is suitable for wall washes for marine vessels hauling Alkylene Oxides The results of this test provide an indication of suitability for hauling Akylene Oxides but are not to be the sole consideration for suitability Equipment    PE wash bottles (500 ml) with 100-ml graduations and with PE lined caps Flat sided stainless steel sampling funnel Minimum of 500 ml of Acetone as the wash solvent Safety Acetone is a flammable solvent Insure that there are no ignition sources before conducting the sample collection Personnel should wear appropriate personal protective equipment (chemical goggles and impermeable gloves) and it should also be assured that there is adequate ventilation during the sample collection Procedure  Wash Sites Standard Conditions:    wash sites (different walls), 4" by 42" (100 mm by 1000 mm) for each wash site 100 ml Acetone per site Combine the washes from these sites  Non-Typical Areas of Vessel: Non-typical areas (discolored patches, lining breaks, exposed metal, etc.) should be washed separately and the collected wash solvent properly labeled, kept and analyzed separately from the standard washes  Do not take wall washes from wet surfaces Sample Collection Hold the collection funnel and sample bottle about 42" (1000 mm) below the top of the wash site The wash site should be as high from the flow as the operator can practically reach (about feet (1,8 m)) Using the PE wash bottle, wash the site (4" (100 mm) wide) with about 100 ml Acetone, allowing it to run down the side of the tank and into the collection funnel and sample bottle Recovery should be at least 60% of the wash volume (about 300 ml) Analysis Analyze the samples of the original and the used Acetone for Non Volatile Matter (NVM), color and appearance per standard laboratory procedures If the NVM is above 50 ppm or the color is above 15 Platimum Cobalt (Pt-Co) or APHA, the tank will be rejected 12 ... vessels hauling Alkylene Oxides The results of this test provide an indication of suitability for hauling Akylene Oxides but are not to be the sole consideration for suitability Equipment  ... settings and testing must be provided on request Liquid and Vapor Sample Points All cargo tanks should be equipped with a closed sampling device at the discharge line and with a vapor sample point... Unmanned barges shall be nitrogen purged to above limits and sealed prior to departure A continuous positive nitrogen pad is ideal but not required Loading on Heels / Commingling Loading on a