BS ISO 16923:2016 pdf download

BS ISO 16923:2016 pdf download.Natural gas fuelling stations — CNG stations for fuelling vehicles
1 Scope
This document covers the design, construction, operation, inspection and maintenance of stations for fuelling compressed natural gas (CNG) to vehicles, including equipment, safety and control devices. This document also applies to portions of a fuelling station where natural gas is in a gaseous state and dispensing CNG derived from liquefied natural gas (LCNG) according to ISO 16924. This document applies to fuelling stations supplied with natural gas as defined in local applicable gas composition regulations or ISO 13686. It also applies to other gases meeting these requirements including biomethane, upgraded coal-bed methane (CBM) and gas supplies coming from LNG vaporization (on-site or off-site). This document includes all equipment for downstream gas supply connection (i.e. point of separation between the CNG fuelling station piping and the pipeline network). Fuelling station nozzles are not defined in this document.
This document covers fuelling stations with the following characteristics:
— slow fill;
— fast fill;
— private access;
— public access (self-service or assisted);
— fuelling stations with fixed storage;
— fuelling stations with mobile storage (daughter station);
— multi-fuel stations.
This document is not applicable to domestic CNG fuelling devices without buffer storage.
NOTE This document is based on the condition that the gas entering the fuelling station is odorized. For unodorized gas fuelling stations, additional safety requirements are included in Clause 10.
2 Normative references
The following documents are referred to in 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.
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation
ISO 834-1, Fire-resistance tests — Elements of building construction — Part 1: General requirements
ISO 4126-1, Safety devices for protection against excessive pressure — Part 1: Safety valves
ISO 8580, Rubber and plastics hoses — Determination of ultra-violet resistance under static conditions
6.2.3 Adequate means of escape in the case of emergency shall be provided. In cases where authorized personnel can be trapped inside compounds, there shall be at least two separate outward opening exits, remote from each other, strategically placed in relation to the hazard considered.
6.2.4 All gates shall open outward or comply with the local fire and building codes. The gates shall be wide enough to provide for an easy access and exit of authorized personnel. Gates shall not allow entry without a key during normal operation. Gates shall have access outwards and if equipped with a latch, shall be equipped on the inside with fast release hardware that can be operated without a key.
6.2.5 Consideration shall be given to the provision of an additional emergency exit where the size of the fenced area or equipment location necessitates this.