BS ISO 4268:2000
Current
The latest, up-to-date edition.
Petroleum and liquid petroleum products. Temperature measurements. Manual methods
Hardcopy , PDF
English
15-12-2000
Foreword
Introduction
1 Scope
2 Normative references
3 Introduction to precautions
4 Precautions relating to procedures
5 Precautions relating to safety
5.1 Introduction
5.2 General safety precautions
5.3 Special safety precautions
6 Equipment
7 Portable electronic thermometers (PETs)
7.1 Introduction
7.2 Accuracy requirements
7.3 Sensing elements
7.4 Electrical safety
7.5 Selection and operation of portable electronic
thermometers
8 Liquid-in-glass thermometers
8.1 General
8.2 Accuracy and resolution
8.3 Specifications
8.4 General requirements for liquid-in-glass
thermometers
8.5 Periodic checks of liquid-in-glass thermometers
9 Precautions to be taken when selecting and using
liquid-in-glass thermometers
9.1 Selection of thermometers
9.2 Detection and prevention of errors in liquid-in-
glass thermometers
9.3 Emergent-stem correction
10 Tank sampling methods
10.1 Cup-case thermometer
10.2 Flushing-case thermometer
10.3 Sampling-bottle method
11 Vapour-lock samplers and associated thermometers
11.1 Vapour-locks on pressurized tanks
11.2 Outline description
12 Permanently installed spot thermometers
12.1 Angle-stem thermometers
12.2 Tank-bottom liquid-in-glass thermometers
12.3 Accuracy and resolution
13 Bimetal-actuated thermometer with dial
13.1 Introduction
13.2 Description
13.3 Accuracy and resolution
14 Procedures
15 Liquids in pressurized tanks
15.1 Introduction
15.2 General principles
15.3 Equipment
15.4 Procedures for pressurized tanks
16 Liquids in vapour-tight tanks
16.1 Introduction
16.2 General principles
16.3 Equipment
16.4 Procedure for vapour-tight tanks
17 Liquids in non-pressurized insulated tanks
17.1 Introduction
17.2 Equipment
17.3 Procedures
17.4 Vertical cylindrical fixed-roof tanks
17.5 Floating-roof tanks
17.6 Horizontal and inclined cylindrical tanks
17.7 Rail wagons and road vehicles carrying tanks
17.8 Ship and barge cargo tanks
18 Liquids in non-pressurized non-insulated tanks at
temperature differing by more than 15 degree C from
ambient
18.1 Introduction
18.2 General principle
18.3 Equipment
18.4 Measurement procedure
19 Procedures for the verification of permanently
installed tank thermometers
19.1 Introduction
19.2 Specification of reference thermometer
19.3 Verification procedure for vertical cylindrical
tanks
19.4 Verification procedure for other tanks with
non-uniform vertical cross-sectional area
20 Procedures for using a permanently installed spot
thermometer
20.1 Introduction
20.2 Location of single-point spot thermometers
20.3 Specification of thermometers
20.4 Verification of representivity of single-point
spot thermometer measurements
20.5 Procedure for using single-point spot
thermometers
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