1、Manual of PetroleumMeasurement StandardsChapter 17Marine MeasurementSection 8Guidelines for Pre-Loading Inspection of Marine Vessel Cargo TanksFIRST EDITION, AUGUST 1998REAFFIRMED, SEPTEMBER 2009Manual of PetroleumMeasurement StandardsChapter 17Marine MeasurementSection 8Guidelines for Pre-Loading I
2、nspection of Marine Vessel Cargo TanksExploration and Production Department, Measurement CoordinationFIRST EDITION, AUGUST 1998REAFFIRMED, SEPTEMBER 2009SPECIAL NOTESAPI publications necessarily address problems of a general nature. With respect to partic-ular circumstances, local, state, and federa
3、l laws and regulations should be reviewed.API is not undertaking to meet the duties of employers, manufacturers, or suppliers towarn and properly train and equip their employees, and others exposed, concerning healthand safety risks and precautions, nor undertaking their obligations under local, sta
4、te, or fed-eral laws.Information concerning safety and health risks and proper precautions with respect to par-ticular materials and conditions should be obtained from the employer, the manufacturer orsupplier of that material, or the material safety data sheet.Nothing contained in any API publicati
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6、ers patent.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at leastevery five years. Sometimes a one-time extension of up to two years will be added to thisreview cycle. This publication will no longer be in effect five years after its publication dateas an operative API
7、standard or, where an extension has been granted, upon republication.Status of the publication can be ascertained from the API Measurement Coordinator, Explo-ration and Production Department, telephone (202) 682-8000. A catalog of API publica-tions and materials is published annually and updated qua
8、rterly by API, 1220 L Street,N.W., Washington, D.C. 20005.This document was produced under API standardization procedures that ensure appropri-ate notification and participation in the developmental process and is designated as an APIstandard. Questions concerning the interpretation of the content o
9、f this standard or com-ments and questions concerning the procedures under which this standard was developedshould be directed in writing to the director of the Measurement Coordinator, Explorationand Production Department, American Petroleum Institute, 1220 L Street, N.W., Washing-ton, D.C. 20005.
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11、te the need for apply-ing sound engineering judgment regarding when and where these standards should beutilized. The formulation and publication of API standards is not intended in any way toinhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance
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14、rican Petroleum InstituteFOREWORDAPI publications may be used by anyone desiring to do so. Every effort has been made bythe Institute to assure the accuracy and reliability of the data contained in them; however, theInstitute makes no representation, warranty, or guarantee in connection with this pu
15、blicationand hereby expressly disclaims any liability or responsibility for loss or damage resultingfrom its use or for the violation of any federal, state, or municipal regulation with which thispublication may conflict.Suggested revision are invited and should be submitted to Measurement Coordinat
16、or,Exploration and Production Department, American Petroleum Institute, 1220 L Street, N.W.,Washington, D. C. 20005.iiiCONTENTSPage1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 SCOPE . . . . . . . . . . . . . . . . . . .
17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 REFERENCED PUBLICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . 15 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 SAFETY AND HEALTH CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.2 Physical Characteristics and Fire Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 26.3 Special Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 PRIOR TO PERFORM
20、ING PRE-LOADING TANK INSPECTION . . . . . . . . . . . . . 27.1 Vessel Responsibilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.2 Key Meeting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. 28 DECK LEVEL INSPECTION PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 TANK ENTRY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39.1 Tank Entry Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、 . . . . . . . . . . . . . . 39.2 Tank Entry Inspection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39.3 Wipe Testing and Wall Wash Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.4 Reporting Tank Entry Inspection Results . . . .
23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.5 Line Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.6 First-Foot Sample Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4APPE
24、NDIX A FLOW CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5APPENDIX B PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11APPENDIX C SAMPLE PERMIT/REPORT . . . . . . . . . . . . . . . . . . . . . . . .
25、. . . . . . . . . 13FiguresA-1 Flow Chart for Key Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A-2 Deck Level Inspection Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A-3 Tank Entry Inspection Flow Chart . .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A-4 Wall Wash Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8B-1 Wall Wash Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . . . 12TablesB-1 Wall Washing Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11C-1 Confined Space Entry Permit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13C-2 Tank Inspection Report . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14v1Chapter 17Marine MeasurementSection 8Guidelines for Pre-Loading Inspection of Marine Vessel Cargo Tanks1 IntroductionThe shipment of crude oil, petroleum products, and petro-chemicals requires stringent quality control d
29、uring the load-ing, transport, and discharge operations. Consequently, it isimportant to determine whether the vessels tanks and associ-ated cargo-loading equipment are sufficiently clean so thatthe intended cargo will not be contaminated.Cargoes of crude oil, petroleum and petrochemicals havevaryin
30、g tolerances regarding the extent to which they areaffected by on board quantities (OBQ) or residues after tankcleaning operations. These guidelines for pre-loading inspec-tion of a vessels tanks are intended to minimize the risk ofcontaminating the cargo to be loaded.Tank inspection activities perf
31、ormed on board a vesselshall be accomplished in the presence of, or with the expresspermission of, the vessels master or other appropriate author-ity. For safety reasons, only appropriate and approved equip-ment shall be used.2 ScopeThese guidelines specify procedures for determining thatthe cargo t
32、anks and associated loading equipment of marinevessels are in a suitably clean condition to receive theintended cargo. They apply to vessel tanks intended to loadcrude oil, petroleum, and petrochemical cargoes. The extentof pre-loading tank inspection will vary depending on thenature of the cargo to
33、 be loaded. These guidelines recom-mend the extent of inspection that should be instituted for cer-tain general types of cargoes and an example of a format thatmay be used for reporting the findings of tank inspections.Because of the wide variety of conditions that may exist whenperforming pre-loadi
34、ng tank inspections, this guideline is notintended to restrict the judgment of the person performingthe inspection.3 Referenced PublicationsThe following API documents are referenced in the text ofthis chapter. APIManual of Petroleum Measurement StandardsChapter 8SamplingChapter 17.1Guidelines for M
35、arine Cargo InspectionChapter 17.4Method for Quantification of Small Vol-umes on Marine Vessels (OBQ/ROB)Chapter 17.6Guidelines for Determining Fullness ofPipelines Between Vessels and Shore TanksRP 1141Guidelines for Confined Space Entry onBoard Tank Ships in the Petroleum IndustryRP 2003Protection
36、 Against Ignitions Arising Out ofStatic, Lightning, and Stray CurrentsPubl 2217AGuidelines for Work in Inert ConfinedSpaces in the Petroleum IndustryICS/OCIMF1International Safety Guide for Oil Tankersand Terminals4 Definitions4.1 first-foot sample (also, test portion sample orfirst-in sample):a sam
37、ple taken after approximately 1 ft.(0.3 m) of cargo has been loaded into a vessels tank.4.2 gas-free:A tank, compartment or container is gas-freewhen sufficient fresh air has been introduced into it to lowerthe level of any flammable, toxic or inert gas to that requiredfor a specific purpose, e.g.,
38、hot work, entry, etc.4.3 wall wash test:The procedure for washing selectedareas, such as the interior bulkheads, tank bottoms and sumpsof cargo tanks, with an appropriate wash liquid; and, subse-quently, testing the wash liquid for the presence of materialwhich might contaminate cargo to be loaded.4
39、.4 wipe test:The procedure of physically wiping anyinterior surface (bulkheads, steam coils, etc.) of the vesselstanks with absorbent white rags. This procedure is used to testthe wiped surfaces for possible color contamination.5 General InformationThe procedures in this guideline should be performe
40、d onlyby properly trained and experienced personnel using appro-priate and safe methods and equipment.All procedures described and recommended in this publi-cation shall be accomplished with strict adherence to thesafety requirements that are specified in the InternationalSafety Guide for Oil Tanker
41、s other formats are permitted)1. Vessel Space to be entered Date/time2. Previous contents Purpose of entry Permit expires3. Oxygen content (%) Oxygen Meter: Mfrs. Serial No. Date meter calibrated4. Combustible gas (% LEL) Gas Meter: Mfrs. Serial No. Date meter calibrated5. Toxicity (ppm, toxin, expo
42、sure limit, reading) Toxicity test method Mfrs. Serial No.6. Toxicity (ppm, toxin, exposure limit, reading) Toxicity test method Mfrs. Serial No.7. Toxicity (ppm, toxin, exposure limit, reading) Toxicity test method Mfrs. Serial No.8. Toxicity (ppm, toxin, exposure limit, reading) Toxicity test meth
43、od Mfrs. Serial No.9. Date other formats are permitted)Vessel Name: Terminal/Berth: Load Port Location:TANK / VESSEL DATA1. Tank history below was submitted by _ and not independently verified by tank inspection personnel.2. Information obtained from vessels officers or vessels logs cannot be guaran
44、teed accurate, and therefore no liability can be assumed for errors resulting from improper information supplied. This report, of necessity, is based on such information. The responsibility for improper information must remain with the vessel and her officers.3. To minimize any contamination that co
45、uld be caused by vessels pipelines or conditions that cannot be checked by visual examination, it is recommended that “first-foot” samples be taken and checked.4. If any vessels tanks are coated, this statement of opinion covers only the cleanliness of the coating and offers no judgment regarding th
46、e suitability of the coating to protect or damage the cargo.5. All tanks inspected are subject to a final inspection immediately prior to loading.TANK INSPECTION DATAVessel Compartment: Last Cargo: 2nd Last Cargo: 3rd Last Cargo:Deck Level -or-Tank Entry Inspection (circle one)Tank Surface or Coatin
47、g: Cleaning Method: First-foot Samples taken:YES NOTank AcceptedTank Rejected (circle one)Date and Time: Location of Vessel for Inspection:TANK INSPECTION DATAVessel Compartment: Last Cargo: 2nd Last Cargo: 3rd Last Cargo:Deck Level -or-Tank Entry Inspection (circle one)Tank Surface or Coating: Clea
48、ning Method: First-foot Samples taken:YES NOTank AcceptedTank Rejected (circle one)Date and Time: Location of Vessel for Inspection:TANK INSPECTION DATAVessel Compartment: Last Cargo: 2nd Last Cargo: 3rd Last Cargo:Deck Level -or-Tank Entry Inspection (circle one)Tank Surface or Coating: Cleaning Me
49、thod: First-foot Samples taken:YES NOTank AcceptedTank Rejected (circle one)Date and Time: Location of Vessel for Inspection:Tank Inspected by:(Print Name) _ (Signature) _Inspection report received for the vessel by:(Print Name) _ (Signature) _Date and time received:_Invoice To o Check here if same as “Ship To”
