Maintenance method of hydrochloric acid storage tank and repair of quality standard storage tank
Hydrochloric acid storage tank maintenance methods and quality standards The repair of storage tanks, such as opening holes, repair welding, replacement of tube joints, etc., shall be formulated in accordance with the "Capacity Regulations" and other relevant standards, and specific construction plans shall be standardized and approved by the technical responsibility of the unit. Materials used for repair (base metal, welding rod, welding wire, flux, etc.) and valves shall have quality certificates. When using old materials, valves and fasteners must be inspected and qualified before use. The fasteners for assembling storage tanks shall be coated with lubricating materials, and the bolts shall be tightened diagonally in turn. Non-metal gaskets are generally not reusable. When selecting gaskets, the corrosivity of the medium should be considered. Anti-corrosion and insulation work can only be carried out after inspection and repair after passing the inspection.