油轮洗舱指导

SHIP PRE CARGO MATRIX

1PURPOSE

1.1ThistoolhasbeendevelopedbyShelltospecificallyprovideguidancetoShe llGroupOwnedandTimeCharteredvessels,andassuchis

anintegralpartoftheShellCharterer'sInstructions.Thetoolisalsoforus ebyShellstaffemployedintherolesofTrading&ShippingOperators,Sup plySchedulers,MarineTechnicalAdvisorsandotherwater-

frontfunctions.WhereathirdpartymakesuseofanyInformation contained in this tool then Shell accept no liability in any way whatsoever.

2AUDIENCE

2.1ThistoolhasbeendevelopedbyShelltospecificallyprovideguidancetoShe llGroupOwnedandTimeCharteredvessels,andassuchis

anintegralpartoftheShellCharterer'sInstructions.Thetoolisalsoforus ebyShellstaffemployedintherolesofTrading&ShippingOperators,Sup plySchedulers,MarineTechnicalAdvisorsandotherwater-

frontfunctions.WhereathirdpartymakesuseofanyInformation contained in this tool then Shell accept no liability in any way whatsoever.

3SAFETY

3.1This document does not purport to address all the safety risks involved in cargo storage, transit, and tank cleaning. Tank cleaning methods

employed by a given operator must comply with the

recommendations contained within the current issue of the

"International Safety Guidefor Oil Tankers and Terminals", herein "ISGOTT"

4

SCOPE AND LIMITATIONS

4.1Thetoolislimitedtodealingwith“white-

oil”liquidpetroleumfuelandcomponentcargoesonly,i.e.cargoesthathavea Colournohigher

than 2.5 on the ASTM or NPA scale.

4.2The tool does not deliberately encompass the loading of LPG,

Black Oil’s and high purity Petrochemical cargoes.

4.3Thetoolexplicitlyforbidsanysocalled“black-

oils”asalastcargoes,i.e.HeavyFuelOil,Slurry,DirtyCondensateandCrudeOil,

asthese

require "special" tank cleaning preparations.

4.4

Whereavesseldeclaresalastcargoasa“black-

oil”,thenTankCleaningmaybeconsideredasamechanismtorenderthetank( s)suitable

to take the product, although this is by exception, and should not be

conducted without the explicit guidance and permission of the

Charterer.

4.5The use of chemical cleaning agents, such as detergents or caustic soda, is not allowed without the explicit permission of the Charterers.5ALTERNATIVE TECHNIQUES & RESPONSIBILITY

5.1Itisrecognisedthatsomevesselsareequippedwithveryeffectivetankstrip pingsystems(superstrippingetc).Itisalsorecognisedthata

vesselscrewmayhavespecificknowledgeofcargotankpreparativeprocedur es,thatareeffective,butwhichmaydifferfromtherecommendationsherein;f orexample,experiencegainedfromthefrequenttransitofcargoesbetweent hesameports.Notwithstanding,vessel owners and operators are

responsible for ensuring that cargo tanks are sufficiently clean to take a nominated cargo.

6LOGIC EMPLOYED IN THE GUIDE

6.1Thistoolhasbeengenericallybaseduponcurrentknowledgeofthediffere ntvesselhardwareandoperationaldesignsemployedinthe

shippingindustry.Thereforetheparticularguidancemaynotnecessarilybeth emostappropriatefortheoperationathand,andattimesmaybe overly or under prescriptive.

6.1The tool was formulated with consideration of the following;