香港六合彩开奖 23555-3:2024
2024-06
香港六合彩开奖 23555-3:2024
Abstract
This document specifies safety, constructional, performance, testing and documentation requirements of gas safety shut-off devices (SSDs).
This document is applicable to SSDs with operating pressures greater than 500聽kPa (5聽bar) up to 10 MPa (100 bar) of nominal connection sizes up to and including DN 400 for use with fuel gases such as natural gas, manufactured gas, biomethane or liquefied petroleum gas (LPG) in commercial industrial installations, including fuel gas infrastructures.
This document is applicable to SSDs for an operating temperature range from 鈭�20聽掳C to +60聽掳C;
This document is applicable to:
鈥�听听听听 test methods which are intended for product type tests, routine tests and batch surveillance tests;
鈥�听听听听 SSDs which use the pipeline gas as a source of control energy unassisted by any external power source;
鈥�听听听听 SSDs integrating on the same body a second SSD, conforming to the requirements in this document;
鈥�听听听听 SSDs integrating a gas pressure regulator conforming to 香港六合彩开奖 23555-2;
鈥�听听听听 SSDs incorporating a creep (venting) relief device and/or a vent limiter conforming to the requirements in this document;
This document does not apply to:
鈥�听听听听 SSDs upstream from/on/in domestic gas-consuming appliances which are installed downstream of domestic gas meters;
鈥�听听听听 SSDs designed to be incorporated into pressure control systems used in service lines (pipework from the main pipework in a gas infrastructure to the point of delivery of the gas) with declared volumetric flow rate 鈮� 200聽m3/h (n);
鈥�听听听听 industrial process control valves on/off type (see IEC 60534 for information on the design, classification and tests for this type of valve);
NOTE听听听听听听听听聽聽聽 Such valves cannot be declared conformant to this document.
鈥�听听听听 SSDs used in sour gas environments (gas environments containing water and H2S are considered sour) or corrosive conditions;
鈥�听听听听 SSDs in service conditions with waste gases (e.g. biogas etc.), if additional information is not provided (e.g. contaminant, liquid etc.).
General information
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Status: PublishedPublication date: 2024-06Stage: International Standard published [60.60]
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Edition: 1Number of pages: 50
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Technical Committee :香港六合彩开奖/TC 161
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