Must LPG storage tanks be equipped with dual level indicators?
Thread Content
Must LPG storage tanks be equipped with dual level indicators? Which regulatory clause specifies it? Are mandatory clauses necessary to include?
No, double-flange level gauges are very useful
Is it necessary to install dual level gauges in accordance with the requirements of petrochemical regulations? Party A’s site is controlled by a single-level gauge of the magnetic flap type.
One local level gauge and one remote level gauge; they are used in comparison to provide double protection
Liquefied petroleum gas belongs to liquefied hydrocarbons; the \"Code for Safety Design of Spherical Storage Tanks for Liquefied Hydrocarbons\" SH 3136-2003, clause 5.3.1, stipulates that spherical storage tanks for liquefied hydrocarbons should be equipped with local and remote level measurement devices, although glass plate level gauges are not recommended for use. The level gauge used should be safe and reliable, and the number of openings on the spherical liquefied hydrocarbon storage tank should be minimized as much as possible. Radar level gauges and single-flange level gauges can be used, one for local use and the other for remote transmission.
Are magnetic flap level gauges for liquefied petroleum gas obsolete? It’s necessary to keep costs under control; generally, using a servo system combined with a radar is a reliable approach. Some units use a servo system along with a pressure difference sensor, but the pressure difference method isn’t reliable. It is recommended to equip the servo with a radar. It’s better to install two sets of level gauges on the spherical tank; since it’s not possible to measure the level manually, having two sets of level gauges is a more reliable approach
Two level gauges are necessary, right? The spherical tank doesn’t have any other means to measure the liquid level; the two gauges allow for comparison, ensuring the accuracy of the level reading. Prevent accidents from happening!
Article 5.5 of GB17681-1999 \"Technical Requirements for the Acceptance of Safety Monitoring and Early Warning Systems in Flammable and Explosive Tank Areas\" stipulates that liquid storage tanks must be equipped with level detection instruments, and at least two different types of such instruments shall be installed in each tank. Clause 5.3.1 of SH3136-2003 \"Code for Safety Design of Spherical Storage Tanks for Liquefied Hydrocarbons\" stipulates that spherical storage tanks for liquefied hydrocarbons shall be equipped with local and remote level gauges. . . . . . Article 6.3.2 of SHT3007-2014 \"Code for Design of Tank Areas in Petrochemical Storage and Transportation Systems\" stipulates that pressure storage tanks shall be equipped with a set of remote transmission instruments and a set of local indication instruments for liquid level measurement. Clause 5.3.1 of SH3136-2003 \"Code for Safe Design of Spherical Storage Tanks for Liquefied Hydrocarbons\" is a mandatory requirement, while the rest are not. Moreover, the 3136 standard is about to be changed to a recommended one.
GB17681-1999 5.5