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prEN 593 Public enquiry
Comment end date 2025-09-07
Industrial valves - Metallic butterfly valves

This document specifies minimum requirements applicable to design, final assessment, designation, marking and documentation for butterfly valves having metallic bodies for use with all type of pipe end connections (e.g. wafer, lug, flange, butt welding) and used for isolating, regulating or control applications. The PN and Class ranges are: — PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; — Class 150; Class 300; Class 600; Class 900. The size range is: — DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 050; DN 1 100; DN 1 200; DN 1 400; DN 1 500; DN 1 600; DN 1 800; DN 2 000; DN 2 200; DN 2 400; DN 2 600; DN 2 800; DN 3 000; DN 3 200; DN 3 400; DN 3 600; DN 3 800; DN 4 000. DN 750 and DN 1 050 are used only for Class 150 and Class 300. Intermediate DNs are allowed upon agreement at the time of order. Potential fields of application and their application standards that apply together with this document are listed below: — applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the European legislation for pressure equipment, the applicable provisions of EN 16668 apply; NOTE 1 Exclusions are given in the European legislation for pressure equipment. — chemical applications, the applicable provisions of EN 12569 apply; — gas distribution systems, the applicable provisions of EN 13774 apply; — water supply application, the provisions of EN 1074-1 and EN 1074-2 apply; — process control application, the provisions of EN 1349 and EN 60534-2-1 apply. NOTE 2 The minimum requirements specified in Clauses 4, 5, 6, 7.1 and 8 are considered as "sound engineering practice" and are to be taken into account to ensure safe use. NOTE 3 The range of DN, applicable to each PN, for wafer and wafer lug valve types is as given in the appropriate part of EN 1092 for Type 11 flanges for the applicable material. The range of DN, applicable to each PN, for flanged valve types is as given in the appropriate part of EN 1092 for Type 21 flanges for the applicable material. The correspondence between DN and NPS is given for information in Annex D.

prEN ISO 13680 Public enquiry
Comment end date 2025-08-31
Oil and gas industries including lower carbon energy - Corrosion-resistant alloy seamless products for use as casing, tubing, coupling stock and accessory material - Technical delivery conditions (ISO 13680:2024)

This document specifies the technical delivery conditions for corrosion-resistant alloy seamless tubular products for casing, tubing, coupling stock and accessory material (including coupling stock and accessory material from bar) for two product specification levels:  PSL-1, which is the basis of this document;  PSL-2, which provides additional requirements for a product that is intended to be both corrosion and cracking resistant for the environments and qualification method specified in Annex G and in the ISO 15156 series. At the option of the manufacturer, PSL-2 products can be provided in lieu of PSL-1. NOTE 1 The corrosion-resistant alloys included in this document are special alloys in accordance with ISO 4948-1 and ISO 4948-2. NOTE 2 For the purpose of this document, NACE MR0175 is equivalent to the ISO 15156 series. NOTE 3 Accessory products can be manufactured from coupling stock and tubular material, or from solid bar stock or from bored and heat heat-treated bar stock as covered in Annex F. This document contains no provisions relating to the connection of individual lengths of pipe. This document contains provisions relating to marking of tubing and casing after threading. This document is applicable to the following five groups of products: a) group 1, which is composed of stainless alloys with a martensitic or martensitic/ferritic structure; b) group 2, which is composed of stainless alloys with a ferritic-austenitic structure, such as duplex and super-duplex stainless alloy; c) group 3, which is composed of stainless alloys with an austenitic structure (iron base); d) group 4, which is composed of nickel-based alloys with an austenitic structure (nickel base); e) group 5, which is composed of bar only (Annex F) in age-hardened (AH) nickel-based alloys with austenitic structure. NOTE 4 Not all PSL-1 categories and grades can be made cracking resistant in accordance with the ISO 15156 series and are, therefore, not included in PSL-2.

prEN 18191 Public enquiry
Comment end date 2025-08-03
Industrial valves - Additional requirements for metallic valves for hydrogen application

This document applies to industrial metallic valves for hydrogen use. It contains recommendations and additional requirements applicable to material selection, design, manufacture, and final assessment. This document addresses the following four services/damage mechanisms, which might exist in combinations: - low temperature applications; - hydrogen environmental embrittlement (HEE) or hydrogen-induced cracking (HIC); - high temperature hydrogen attack (HTHA); - hydrogen service with cyclic loads (fatigue). The document considers the difference between gaseous hydrogen (GH2) and liquid hydrogen (LH2), where necessary. The additional provisions set out in this document do not cover corrosion such as electro-chemical corrosion of metals under participation of hydrogen (e.g. sour gas). This document is based on the requirements contained in the standards specified below: - applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the European legislation for pressure equipment, the applicable provisions of EN 16668 apply; - additional requirements for valves in chemical and petrochemical applications are specified in EN 12569; - additional requirements for valves in gas distribution systems are specified in EN 13774; - additional requirements for valves in gas transportation systems are specified in EN 14141.

prEN ISO 19008 Public enquiry
Comment end date 2025-07-27
Oil and gas industries including lower carbon energy - Standard cost coding system (ISO/DIS 19008:2025)

ISO 19008:2016 describes the standard cost coding system (SCCS) that classifies costs and quantities related to exploration, development, operation and removal of oil and gas production and processing facilities and to the petroleum, petrochemical and natural gas industry. Upstream, midstream, downstream and petrochemical business categories are included. The SCCS for coding of costs is applicable to: - cost estimating; - actual cost monitoring and reporting; - collection of final quantities and cost data; - standardized exchange of cost data among organizations; - implementation in cost systems. ISO 19008:2016 is intended for users such as the following: a) owner/operator/company (individual or grouped entity that is entitled or contributes to operations in the exploitation of oil and gas fields); b) industry/trade associations; c) manufacturers/contractors; d) cost engineering service contractors, cost system providers, benchmarking providers, etc.; e) authorities/regulatory bodies. ISO 19008:2016 does not apply to the following: 1) cost classification relevant to cost accounting rules, specific contractual agreements, local requirements for cost reporting to national bodies, government rules and tax regulations, authorization for expenditure (AFE), billing purposes etc.; 2) specific project breakdown structures (e.g. work breakdown structures, contract breakdown structures, organizational breakdown structure) or asset breakdowns (e.g. TAG/system codes, area/module breakdown structure) which are and will remain unique. However, this International Standard can provide a basis for the establishment of such specific classification systems.

prEN ISO 20815 Public enquiry
Comment end date 2025-07-27
Oil and gas industries including lower carbon energy - Production assurance and reliability management (ISO/DIS 20815:2025)

This document describes the concept of production assurance within the systems and operations associated with exploration drilling, exploitation, processing and transport of petroleum, petrochemical and natural gas resources. This document covers upstream (including subsea), midstream and downstream facilities, petrochemical and associated activities. It focuses on production assurance of oil and gas production, processing and associated activities and covers the analysis of reliability and maintenance of the components. This includes a variety of business categories and associated systems/equipment in the oil and gas value chain. Production assurance addresses not only hydrocarbon production, but also associated activities such as drilling, pipeline installation and subsea intervention. This document provides processes and activities, requirements and guidelines for systematic management, effective planning, execution and use of production assurance and reliability technology. This is to achieve cost-effective solutions over the life cycle of an asset development project structured around the following main elements: — production assurance management for optimum economy of the facility through all of its life cycle phases, while also considering constraints arising from health, safety, environment, and quality; — planning, execution and implementation of reliability technology; — application of reliability and maintenance data; — reliability-based technology development, design and operational improvement. The IEC 60300-3 series addresses equipment reliability and maintenance performance in general. This document designates 12 processes, of which seven are defined as core production assurance processes and addressed in this document. The remaining five processes are denoted as interacting processes and are outside the scope of this document. The interaction of the core production assurance processes with these interacting processes, however, is within the scope of this document as the information flow to and from these latter processes is required to ensure that production assurance requirements can be fulfilled. The only requirement mandated by this document is the establishment and execution of the production assurance programme (PAP). It is important to reflect the PAP in the overall project management in the project for which it applies. This document recommends that the listed processes and activities be initiated only if they can be considered to add value.

prEN 16728 Public enquiry
Comment end date 2025-07-13
LPG equipment and accessories - Transportable refillable LPG cylinders other than traditional welded and brazed steel cylinders - Periodic inspection

This document specifies procedures for periodic inspection and testing, for transportable refillable LPG cylinders with a water capacity from 0,5 l up to and including 150 l. This document is applicable to the following: - welded steel LPG cylinders manufactured to an alternative design and construction, see EN 14140 or equivalent standard; - welded aluminium LPG cylinders, see EN 13110 or equivalent standard; - composite LPG cylinders, see EN 14427 or equivalent standard; - over-moulded LPG cylinders designed and manufactured according to EN 1442 or EN 14140; see Annex F. This document can also be applied to stainless steel LPG cylinders designed according to national codes, see Annex A.3. This document can also be applied to composite LPG cylinders designed according to EN 12245. This document does not apply to cylinders permanently installed in vehicles.

prEN ISO 4027 Public enquiry
Comment end date 2025-07-13
Fasteners - Hexagon socket set screws with truncated cone point (ISO/DIS 4027:2025)

ISO 4027:2003 specifies the characteristics of hexagon socket set screws with cone point and threads from M1,6 up to and including M24 and of product grade A.

prEN ISO 17078-2 Public enquiry
Comment end date 2025-07-13
Petroleum and natural gas industries - Drilling and production equipment - Part 2: Flow-control devices for side-pocket mandrels (ISO/DIS 17078-2:2025)

ISO 17078-2:2007 provides requirements for subsurface flow-control devices used in side-pocket mandrels (hereafter called flow-control devices) intended for use in the worldwide petroleum and natural gas industry. This includes requirements for specifying, selecting, designing, manufacturing, quality-control, testing and preparation for shipping of flow-control devices. Additionally, it includes information regarding performance testing and calibration procedures. The installation and retrieval of flow-control devices is outside the scope of ISO 17078-2:2007. Additionally, ISO 17078-2:2007 is not applicable to flow-control devices used in centre-set mandrels or with tubing-retrievable applications. ISO 17078-2:2007 does not include requirements for side-pocket mandrels, running, pulling, and kick-over tools, and latches that might or might not be covered in other ISO specifications. Reconditioning of used flow-control devices is outside of the scope of ISO 17078-2:2007.

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