BS ISO 4266-1:2002
$142.49
Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods – Measurement of level in atmospheric tanks
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 28 |
This part of ISO 4266 gives guidance on the accuracy, installation, commissioning, calibration and verification of automatic level gauges (ALGs), of both intrusive and non-intrusive types, for measuring the level of petroleum and petroleum products having a Reid vapour pressure less than 100 kPa, stored in atmospheric storage tanks.
This part of ISO 4266 is not applicable to the measurement of level in refrigerated storage tanks with ALG equipment.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | TitlePage – Petroleum and liquid petroleum products�— Measurement of level and temperature in sto… |
| 5 | TableofContent – Contents Page |
| 7 | Foreword – Foreword |
| 9 | Scope – 1��� Scope NormativeReference – 2��� Normative references |
| 11 | Clause1 – 4��� Precautions Subclause2 – 4.1��� Safety precautions Subclause2 – 4.2��� Equipment precautions UntitledSubclause3 – 4.2.1��� All of the ALG equipment should be capable of withstanding the pres… UntitledSubclause3 – 4.2.2��� ALGs should be certified for use in the hazardous-area classificati… UntitledSubclause3 – 4.2.3��� Measures should be taken to ensure that all exposed metal parts of … UntitledSubclause3 – 4.2.4��� All ALG equipment should be maintained in safe operating condition … Subclause2 – 4.3��� General precautions UntitledSubclause3 – 4.3.1��� The general precautions given in UntitledSubclause3 – 4.3.2��� Tank temperatures should be measured at the same time as the tank l… UntitledSubclause3 – 4.3.3��� Levels measured for bulk transfer should be recorded promptly when … UntitledSubclause3 – 4.3.4��� Whenever determinations of the contents of a tank are made before t… UntitledSubclause3 – 4.3.5��� All parts of the ALG in contact with the product or its vapour shou… UntitledSubclause3 – 4.3.6��� ALGs should have sufficient dynamic response to track the liquid le… UntitledSubclause3 – 4.3.7��� Following the transfer of product, the tank should be allowed to se… UntitledSubclause3 – 4.3.8��� ALGs should provide security to prevent unauthorized adjustment or … |
| 12 | Clause1 – 5��� Accuracy Subclause2 – 5.1��� Intrinsic error of ALGs Subclause2 – 5.2��� Calibration prior to installation Subclause2 – 5.3��� Error caused by installation and operating conditions Subclause2 – 5.4��� Overall accuracy Subclause3 – 5.4.1��� General |
| 13 | Subclause3 – 5.4.2��� Use of ALGs for fiscal�/custody transfer purposes Clause1 – 6��� Installation of ALGs Subclause2 – 6.1��� General Subclause2 – 6.2��� Mounting location Subclause2 – 6.3��� Manufacturer’s requirements Subclause2 – 6.4��� Installation UntitledSubclause3 – 6.4.1��� For fiscal/custody transfer accuracy, an ullage ALG should be mount… UntitledSubclause3 – 6.4.2��� As an alternative, an ullage-based ALG may be mounted on the roof o… UntitledSubclause3 – 6.4.3��� Innage-based ALGs should be mounted at a stable location at the tan… UntitledSubclause3 – 6.4.4��� Where possible, the ALG should be located in close proximity to the… |
| 19 | Subclause2 – 6.5��� Still-well design UntitledSubclause3 – 6.5.1��� The still-well should be attached in either of the two ways describ… UntitledSubclause3 – 6.5.2��� The still-well may be supported on the bottom of the tank. UntitledSubclause3 – 6.5.3��� The still-well may be supported by a trunnion or hinge connected to… UntitledSubclause3 – 6.5.4��� The upper end of the still-well and the sliding guide should be des… UntitledSubclause3 – 6.5.5��� The recommended minimum still-well diameter is UntitledSubclause3 – 6.5.6��� The distance from the bottom of the still-well to the bottom of the… UntitledSubclause3 – 6.5.7��� The still-well should be perforated with one or two rows of slots o… UntitledSubclause3 – 6.5.8��� After the tank has been hydrostatically tested, the still-well shou… Clause1 – 7��� Initial setting and initial verification of ALGs in the field Subclause2 – 7.1��� Introduction |
| 20 | Subclause2 – 7.2��� General precautions Subclause3 – 7.2.1��� Initial requirements Subclause3 – 7.2.2��� Manual reference level measurement procedure Subclause3 – 7.2.3��� Reference measurement tape and weight certification Subclause3 – 7.2.4��� Effect of weather Subclause3 – 7.2.5��� ALG technology-specific considerations Subclause3 – 7.2.6��� Application-specific considerations |
| 21 | Subclause2 – 7.3��� Initial settings of ALGs Subclause3 – 7.3.1��� Setting against manual reference ullage measurements Subclause3 – 7.3.2��� Setting against manual reference dip (innage) measurements |
| 22 | Subclause2 – 7.4��� Initial verification Subclause3 – 7.4.1��� Introduction |
| 23 | Subclause3 – 7.4.2��� Verification conditions Subclause3 – 7.4.3��� Initial verification procedures Subclause4 – 7.4.3.1��� ALG verification by manual reference ullage (outage) measurements |
| 24 | Subclause4 – 7.4.3.2��� ALG verification by manual reference dip (innage) measurements Subclause4 – 7.4.3.3��� Verification tolerance for ALGs in fiscal/custody transfer application Subclause2 – 7.5��� Record keeping |
| 25 | Clause1 – 8��� Subsequent verification of ALGs Subclause2 – 8.1��� General Subclause2 – 8.2��� Frequency of subsequent verification Subclause2 – 8.3��� Procedure for subsequent verification Subclause2 – 8.4��� Tolerance for subsequent verification Clause1 – 9��� Data communication and receiving |
| 26 | Bibliography – Bibliography |
