Petroleumsteknologi og beslektet teknologi

A method to calculate viscosity and other properties, excluding density, for use in the metering of natural gas flow

This part of ISO 16486 specifies the requirements of fitness for purpose of the unplasticized polyamide (PA-U) piping system, intended to be buried and used for the supply of gaseous fuels. It also specifies the definitions of electrofusion and butt fusion joints. This part of ISO 16486 specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions. It also specifies the test parameters for the test methods to which it refers. ISO 16486 is applicable to PA-U piping systems the components of which are connected by fusion jointing and/or mechanical jointing. In conjunction with the other parts of ISO 16486, it is applicable to PA-U fittings, their joints and to joints with components of PA-U.

The objective of ISO 20257 is to provide functional guidelines and recommend practices for the design of floating liquefied natural gas (LNG) installations in order to have a safe and environmentally acceptable design and operation of floating LNG installations. ISO 20257 gives functional guidelines for the design and operation of all floating LNG installations including those for the liquefaction, storage, vaporisation, transfer and handling of LNG.

After the 2019 edition was published, it was discoverd need for presision of guiding to minimize the need for interpretation of requirements/recommendations. 

The updates are marked in red and in the margin. 

Both the Norwegian and the English version is uploaded. 

Comments to red text and typos will be adressed after the review. 

Comments can be given in this portal or by returning the commenting template to petroleum (at) standard.no 

Public industrial enquiry for NORSOK  M-120 "Material data sheets for structural steel" Edition 6, intended for puplication 2020.

This NORSOK standard includes a collection of material data sheets (MDS) applicable to selected material standards and grades for use in steel structures.