Here are the detailed installation steps and precautions:
Preparation before Installation
1. Basic Construction
Basic Requirements:
Material: Concrete (C25 and above), with anti-corrosion treatment on the surface (such as epoxy resin coating or asphalt corrosion protection).
Size: Diameter ≥ Tank Diameter + 0.5m, Thickness ≥ 20cm (to be calculated by structural engineer for load-bearing capacity).
Flatness: Horizontal error ≤ 3mm/m², to avoid uneven stress and deformation of the storage tank.
Drainage Design: Basic perimeter drainage channels are installed to prevent water accumulation and corrosion.
Optional: Impermeable dike
Volume ≥ 110% of the tank's total capacity (i.e., ≥ 55m³), to prevent leakage and environmental contamination.
2. Tank Acceptance
Inspection Items:
No cracks, scratches, or deformation in appearance.
Flanges and interfaces are undamaged, with intact sealing washers.
Enclosed documents (certificates of compliance, material reports, pressure test reports).
3. Tools and Personnel Preparation
Tools: Crane (over 10 tons), nylon slings (anti-scratch), level, wrench, PE welding gun (for on-site welding if required).
Personnel: At least 2 installers + 1 technical supervisor
Section II: Tank Installation Steps
1. Hoisting into place
Lifting Method:
Use nylon straps (prohibit steel wire rope from directly contacting the drum to avoid scratching).
Select lifting points at the tank-specific lifting lug or reinforced rib locations; direct lifting of flanges or pipes is strictly prohibited.
Slowly lift and hover after lifting off the ground to check for balance, ensuring no tilt.
Placement Adjustment
Tank bottom lined with rubber pads or PE boards (anti-slip, anti-corrosion).
Adjust with a level to ensure overall levelness (error ≤ 5mm).
2. Pipe and fittings connection
Inlet/Outlet Tube
Utilize PP/PE/PVDF piping materials to prevent metal corrosion.
Flange connections use EPDM or PTFE gaskets; bolts require corrosion protection treatment (such as plastic coating).
It is recommended to install acid-resistant valves (such as fluoro-lined ball valves) at the discharge outlet, and to set up a filter (to prevent crystalline blockage).
Exhaust and Safety Equipment:
Breathing valve installed at the top (to prevent negative or positive pressure).
Level gauge is selected with magnetic flip or radar type (to avoid metal contact with the solution).
3. Mounting and Reinforcement
Wind and earthquake resistance:
Steel clamps (304 stainless steel or carbon steel with anti-corrosion coating) are added around the storage tank and securely fastened to the concrete foundation.
Footings bolts must be reinforced in seismic belt areas.
Ultraviolet Protection (PE/PP Tanks):
Outer surface wrapped with foil tape or coated with anti-UV paint (extends lifespan).
Section 3: Post-Installation Inspection and Testing
1. Sealing Integrity Test
Water Pressure Test:
Fill with water, let stand for 24 hours, and check for no leaks in the tank and interfaces.
Check for bubbles at the flange connection with soap water.
2. System trial operation
Add Liquid
First, inject a small amount of solution (10% to 20% capacity), and then operate at full load after observing 24 hours without any abnormalities.
Inspect the level gauge, valves, pumps, and other auxiliary equipment for proper operation.
Section 4: Safety and Maintenance Precautions
1. Safety Protection
Corrosion resistance:
Operators wear acid-resistant gloves and safety goggles.
Wash with large quantities of water in case of leakage (corrosivity can be reduced as FeCl3 is diluted with water).
Fire and explosion proof
Keep away from heat sources; welding operations near tanks prohibited (HCl gas is flammable).
2. Routine Maintenance
Monthly Inspection:
Dome integrity: Check for expansion or cracks (especially in cold winter temperatures).
Are the flange gaskets worn, and are the bolts loose?
Annual comprehensive inspection:
Wall thickness measurement (ultrasonic testing), to prevent long-term corrosion and thinning.
Section 5: Comparison of 50m3 Storage Tank Installation Solutions
HDPE Rotomolded Storage Tanks, Steel Lined Plastic Storage Tanks, Fiberglass Reinforced Plastic Storage Tanks
Low installation difficulty (overall hoisting), medium (requires lining welding), high (requires construction)
Corrosion resistance: Excellent (seamless), Good (seams prone to leakage), Superior (requires resin matching)
Low cost ($30,000~$60,000), Medium cost ($80,000~$120,000), High cost ($150,000~$200,000)
Recommended scenarios: room temperature, low concentration (<30%), high pressure; high concentration required at high temperatures; special corrosive environments.
Summary
Focus on the flatness of the foundation, lifting safety, pipeline anti-corrosion, and sealing tests when installing a 50m3 storage tank. HDPE rotation-molded storage tanks are cost-effective and durable, but for high concentration or high-temperature conditions, steel-lined plastic or fiberglass tanks should be chosen. Regular maintenance can extend the storage tank's lifespan to over 10 years.
