BS ISO 4266-4:2002
$142.49
Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods – Measurement of temperature in atmospheric tanks
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 24 |
This part of ISO 4266 gives guidance on the selection, accuracy, installation, commissioning, calibration and verification of automatic tank thermometers (ATTs) in fiscal/custody transfer applications in which the ATT is used for measuring the temperature of petroleum and liquid 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 temperature in caverns or in refrigerated storage tanks.
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 |
| 10 | Clause1 – 4��� Precautions Subclause2 – 4.1��� Safety precautions Subclause2 – 4.2��� Equipment precautions UntitledSubclause3 – 4.2.1��� All of the ATT equipment should be capable of withstanding the pres… UntitledSubclause3 – 4.2.2��� ATTs 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 parts of the ATT in contact with the product or its vapour shou… UntitledSubclause3 – 4.2.5��� All AT�T equipment should be maintained in safe operating condition… |
| 11 | UntitledSubclause3 – 4.2.6��� The temperature elements should be located so that the temperature … Subclause2 – 4.3��� General precautions UntitledSubclause3 – 4.3.1��� The general precautions given in UntitledSubclause3 – 4.3.2��� Tank levels should be measured at the same time as the tank tempera… UntitledSubclause3 – 4.3.3��� Temperatures measured for bulk transfer should be recorded when the… UntitledSubclause3 – 4.3.4��� The same general procedures should be used to measure a tank temper… UntitledSubclause3 – 4.3.5��� ATTs should provide security to prevent unauthorized adjustment or … UntitledSubclause3 – 4.3.6��� The design and installation of ATTs may be subject to the approval … Clause1 – 5��� Accuracy Subclause2 – 5.1��� General Subclause2 – 5.2��� Intrinsic error of AT�Ts Subclause2 – 5.3��� Calibration prior to installation Subclause3 – 5.3.1��� General |
| 12 | Subclause3 – 5.3.2��� AT�T calibrated as a system Subclause3 – 5.3.3��� AT�T calibrated by components Subclause3 – 5.3.4��� Multiple-point ATTs Subclause3 – 5.3.5��� Variable-length AT�Ts Subclause3 – 5.3.6��� Uncertainty of the reference Subclause2 – 5.4��� Error caused by installation and operating conditions |
| 13 | Subclause2 – 5.5��� Overall accuracy Subclause3 – 5.5.1��� General Subclause3 – 5.5.2��� Use of ATT for fiscal/custody transfer purposes Clause1 – 6��� Selection of ATTs Subclause2 – 6.1��� General |
| 14 | Subclause2 – 6.2��� AT�Ts for fiscal/custody transfer purposes Clause1 – 7��� Description of ATT equipment Subclause2 – 7.1��� Introduction Subclause2 – 7.2��� Electrical temperature elements Subclause3 – 7.2.1��� Resistance temperature detectors |
| 15 | Subclause3 – 7.2.2��� Other temperature elements Clause1 – 8��� Installation of ATTs Subclause2 – 8.1��� General Subclause2 – 8.2��� Single-point (spot) temperature elements Subclause2 – 8.3��� Averaging temperature elements Subclause3 – 8.3.1��� General Subclause3 – 8.3.2��� Upper, middle and lower temperature elements |
| 16 | Subclause3 – 8.3.3��� Multiple-point temperature elements Subclause3 – 8.3.4��� Variable-length RTD temperature elements Subclause3 – 8.3.5��� Mid-level temperature element Subclause3 – 8.3.6��� Moveable spot temperature element |
| 17 | Subclause3 – 8.3.7��� Other methods Subclause2 – 8.4��� Thermowells for electronic temperature elements |
| 19 | Clause1 – 9��� Calibration and field verification of ATTs Subclause2 – 9.1��� Introduction Subclause2 – 9.2��� Calibration of single-point, or mid-level temperature element ATTs for fiscal… Subclause3 – 9.2.1��� Calibration prior to installation Subclause3 – 9.2.2��� Initial field verification Subclause4 – 9.2.2.1��� Verification by components Subclause5 – 9.2.2.1.1��� Temperature element Subclause5 – 9.2.2.1.2��� Temperature transmitter |
| 20 | Subclause4 – 9.2.2.2��� Verification as a system Subclause2 – 9.3��� Calibration of upper, middle and lower or multiple-point ATTs for fiscal/cust… Subclause3 – 9.3.1��� Calibration prior to installation Subclause3 – 9.3.2��� Initial field verification Subclause4 – 9.3.2.1��� Verification by components Subclause5 – 9.3.2.1.1��� Temperature element Subclause5 – 9.3.2.1.2��� Temperature transmitter Subclause4 – 9.3.2.2��� Verification as a system |
| 21 | Subclause2 – 9.4��� Calibration of variable-length ATTs for fiscal/custody transfer purposes Subclause3 – 9.4.1��� Calibration prior to installation Subclause3 – 9.4.2��� Initial field verification Subclause2 – 9.5��� Subsequent verification of ATTs Subclause3 – 9.5.1��� General Subclause3 – 9.5.2��� Frequency of subsequent verification Subclause3 – 9.5.3��� Record keeping Clause1 – 10��� Data communication and receiving |
