Here are the detailed installation steps and precautions:
Preparation before Installation
1. Basic Construction
Basic Requirements:
Material: Concrete (C25 and above), surface treated for corrosion resistance (e.g., 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 prevent uneven stress and deformation of the storage tank.
Drainage Design: Basic perimeter drainage channels are installed to prevent water accumulation and corrosion.
Silt Barrier (optional):
Volume ≥ 110% of the total tank capacity (i.e., ≥ 55 m3), to prevent leakage and environmental pollution.
2. Tank Acceptance
Inspection Items:
No cracks, scratches, or deformation on the appearance.
Flanges and interfaces are undamaged, with intact sealing washers.
Enclosed documents (Certificate of Compliance, Material Report, Pressure Test Report).
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 2: Tank Installation Steps
1. Hoisting into place
Lifting Method:
Use nylon slings (prohibit direct contact with the tank body with wire rope to avoid scratching).
Select lifting points at the tank's dedicated lifting lugs or reinforced rib locations; direct lifting of flanges or pipes is strictly prohibited.
Slowly hoist, after lifting off the ground, hover to check for balance, ensure 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 Fitting Connections
Inlet/Outlet Tube:
Use PP/PE/PVDF material piping to prevent metal corrosion.
Flanged connections use EPDM or PTFE gaskets, and bolts must be treated for corrosion resistance (e.g., plastic coated).
Recommend installing acid-resistant valves (such as PTFE-lined ball valves) at the discharge outlet, and setting up a filter (to prevent crystalline blockage).
Exhaust and Safety Equipment:
Breathing valve installed at the top (to prevent vacuum or overpressure).
Level gauges are selected to be 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 tank perimeter and secured to the concrete foundation.
Areas in seismic zones require additional anchoring bolts for stabilization.
Ultraviolet Protection (PE/PP Tanks):
Outer surface wrapped with aluminum foil tape or coated with UV-resistant paint (extends lifespan).
3. Post-installation Inspection and Testing
1. Sealing Integrity Test
Water Pressure Test:
Fill with water, let stand for 24 hours, and check for any leaks in the container and joints.
Check for bubbles at the flange connection with soap and 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 for 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 protective goggles.
Flush with large amounts of water in case of leakage (the corrosiveness of FeCl? can be reduced by dilution with water).
Fire and explosion proof
Keep away from heat sources. Welding operations are prohibited near the storage tanks (HCl gas is flammable).
2. Routine Maintenance
Monthly Inspection:
Dome for expansion and cracks (especially in winter at low temperatures).
Are the flange gaskets worn out, and are the bolts loose?
Annual comprehensive inspection:
Thick Wall Measurement (Ultrasonic Inspection), to prevent long-term corrosion thinning.
Section 5: Comparison of 50m3 Storage Tank Installation Solutions
HDPE Rotomolded Storage Tanks, Steel Lined Plastic Tanks, FRP Storage Tanks
Low installation difficulty (overall hoisting), medium (requires lining welding), high (requires construction)
Corrosion resistance: Good (seam prone to leakage), Excellent (without seam), Excellent (requires resin matching)
Low Cost (30,000-60,000 RMB), Medium Cost (80,000-120,000 RMB), High Cost (150,000-200,000 RMB)
Recommended scenarios: room temperature, low concentration (＜30%), pressure-bearing; high concentration required for high temperature; special corrosive environment.
Summary
Installation of 50m3 storage tanks requires particular attention to foundation flatness, lifting safety, pipeline anticorrosion, and sealing integrity testing. HDPE rotational molding tanks are cost-effective and durable, but for high concentration or high-temperature conditions, steel-lined or glass-fiber reinforced plastic should be chosen. Regular maintenance can extend the tank's lifespan to over 10 years.
