BS EN 17110:2018 pdf download

BS EN 17110:2018 pdf download.Tanks for transport of dangerous goods – Service equipment for tanks – Vapour manifold vent valve
1 Scope
This document covers the vapour manifold vent valve used to provide controlled venting of the vapour manifold to atmosphere.
It specifies the performance requirements and the critical dimensions of the vapour manifold vent valve. It also specifies the tests necessary to verify compliance of the equipment with this document.The service equipment specified by this document is suitable for use with liquid petroleum products and other dangerous substances of Class 3 of ADR [1] which have a vapour pressure not exceeding 110 kPa at 50 °C and petrol, and which have no sub-classification as toxic or corrosive.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12266-1:2012, Industrial valves一Testing of metallic valves一Part 1: Pressure tests, test procedures and acceptance criteria – Mandatory requirements
EN 12266-2:2012，Industrial valves 一Testing of metallic valves 一Part 2: Tests, test procedures and acceptance criteria一Supplementary requirements
EN 14564, Tanks for transport of dangerous goods一Terminology
ISO 2859-1, Sampling procedures for inspection by attributes 一Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14564 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
● IEC Electropedia: available at http:/ /www.electropedia.org/
● ISO Online browsing platform: available at http://www.iso.org/obp
4 Functions
The vapour manifold vent valve
一shall provide controlled venting of the vapour manifold;
一shall be vapour tight when closed;
一may be provided with a flame arrester;
一may be self-operating;
一may be provided with an open/ closed indicator;
5 Design characteristics
5.1 General
The vapour manifold vent valve shall provide a controlled vapour path between the vapour manifold and atmosphere. The vapour manifold vent valve shall be closed during the process of vapour recovery, both loading and delivery. Self-operating valves shall not compromise the vapour recovery process. Such valves shall be of the resealing type, and shall be designed to prevent unauthorized adjustment of the self-operating mechanism. When not activated the valve shall return automatically to its passive state.