Utrustning för petroleum- och naturgasindustri

 This document specifies the selection criteria and minimum requirements for selecting coatings for pressurized service within process vessels. This is given for the following: — key factors influencing coating selection, — generic composition of test liquids which can be used as references when evaluating supporting testing evidence for coatings, — principal test methods to be used as evidence of performance when selecting suitable coatings, — ensuring that supporting evidence used in evaluating coatings is relevant to the potential end use. This document refers to types of coatings that are generally available, with properties that are known and documented. It also allows other materials to be evaluated and qualified for use. This document is to be used for process vessels coated at the new construction phase. It is intended to be used only where the coating is applied directly to the substrate. This document does not cover requirements related to metallic coatings nor weld overlay materials.

ISO 4266-5 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 cargo tanks on board marine vessels.

ISO 4266-5 is not applicable to the measurement of temperature in refrigerated storage tanks, or pressurized cargo tanks on board marine vessels.

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, stored in pressurized storage tanks. This part of ISO 4266 is not applicable to the measurement of temperature in caverns or in refrigerated storage tanks.

This document specifies minimum requirements to quantify the boil-off gas (BOG) consumed on liquefied natural gas (LNG) carriers for their own functions, notably for power generation, during cargo transfer operations. BOG in this document refers to the low molecular gas returned from shore tanks to ships’ tanks and the gas produced in ships’ cargo tanks. This document provides requirements for the metering of BOG and the subsequent calorific value calculations which can be taken into account when the energy transferred during cargo transfer is determined. This document also introduces performance requirements and calibration of the elements included in the BOG measurement system. A flowmeter of any type may be used to measure BOG as long as it meets the performance requirements specified in this document. This document, with some modification, can also be applied to the measurement of BOG consumed by LNG carriers at sea.