Do 85% of formic acid pump motors require explosion protection?
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Medium: 85% formic acid. Temperature: Room temperature. Does the motor of the transfer pump used need to be explosion-proof? What are the guidelines? Thank you.
Formic acid is a flammable substance, so explosion-proof motors should be used. GB-T_13869-2008_Guidelines for Electrical Safety – 8.4 Electrical products used in areas or locations where combustible, flammable, or oxidizing (explosive) materials are stored, produced, or used must meet the flame-retardant or explosion-proof requirements specified for such special environments. GB50058-92 \"Code for Design of Electrical Installations in Explosive and Flammable Environments\" – Article 4.2.1: Flammable environments shall be zoned in accordance with the likelihood and consequences of fire incidents, as well as the degree of risk and the state of the substances, in accordance with the provisions below. I. Zone 21: An environment with flammable liquids whose flash point is higher than the ambient temperature, and in which their quantity and arrangement pose a fire hazard. Selection of protective structures for electrical equipment Table 4.3.4 file:///C:/DOCUME~1/lenovo/LOCALS~1/Temp/ksohtml/wps_clip_image-14115.png
This post was last edited by lyr9901 on 2011-9-26 at 10:15. Is it necessary to designate an explosion-proof area for a 1m3 storage tank containing 85% formic acid? What is the fire rating of formic acid?
HCOOH is a flammable and explosive liquid; its vapors are highly explosive, so explosion-proof motors should be used.
Explosion-proof models must be selected. The concept of explosion proofness does not relate to whether an explosion will occur under operating conditions; rather, it is necessary to consider emergency measures in the event of an accident. For materials that are flammable and explosive, explosion-proof motors should be used.