Views: 2025 Author: Keystone Vessel (Wuhan) Publish Time: 2025-05-04 Origin: Keystone Vessel (Wuhan)
20PCS Metal Alky Petrochemical PE Catalyst UN Portable Tanks T21 C480 For AmirKabir Olefin Plant
Basic Information Comparison Table
Item | UN 3394 | UN 3399 | Core Attributes of T21 Portable Tank Containers |
Proper Shipping Name | Organometallic substance, liquid, pyrophoric, water-reactive | Organometallic substance, liquid, water-reactive (non-pyrophoric) | Designed for organometallic liquids; Class 4.2 compliant; Packing Group I; Packaging Instruction P400 |
Common Substances | Triethylaluminum, diethylaluminum chloride, ethylaluminum sesquichloride | Some alkylaluminum derivatives (non-pyrophoric type) | Design pressure: 14 bar; Temperature range: -40℃ ~ 65℃; Materials: SA-516/16MnDR、09MnNiDR、SS304; Common volumes: 1630L/ 1750L/1880/7495L |
Hazard Class | 4.2 (self-reactive flammable substances) | 4.3 (substances which, in contact with water, emit flammable gases) | Equipped with DN50 rupture disk, DN15/DN 20/DN25/DN32 liquid phase valve, DN 20 gas phase valve, nitrogen Seal. Fusible element setting 177°C( ¾ inch NPT treaded plug Melting point 177 °C / 350 °F).High Quality Strong Safty Valve Xingguang SF/A412F-25P(3B) 2-inch internal spring-loaded safety relief valve. Set pressure: 15.4 barg (223 psig) |
Key Hazard Characteristics | Pyrophoric on exposure to air; violent reaction with water | No pyrophoricity, but releases flammable gases on contact with water | Frame protection for anti-overturning/impact resistance |
Max. gross mass : 4000 kg
Tare : 1050 kg Payload : 2950 kg
ASME Certification Mark with U; Fusible element setting 177°C
UN T21 TEAL Tank Specifications
1-Water capacity:1880 litre
2-Max.Gross mass:4000kg
3-Max. Tare mass:1070kg
WATER CAPACITY | |
MAX GROSS MASS | 4000kg |
MAX TARE MAS | 950 - 1050kg |
EXTERNAL DIMENSIONS | 2128mm*1148mm*1388mm |
M.A.W.P | 14bar 1.4Mpa /-0.13MPa at 65 oC |
DESIGN TEMPERATURE | -40oC to +65oC |
MATERIAL | SA-516M Gr.485 / 16MnDR |
SHELL THICKNESS | 10mm,12mm,12mm |
PRESSURE VESSEL CODE | T21 UN ,IMDG，ADR/RID，49CFR，TIR，USDOT，ASME，BV |
APPLICABLE CARGOS | TRIETHYL ALUMINUM UN 3394 UN 3399 |
1. Design & Manufacturing Standards
Complies with IMDG CODE, ADR/RID, 49CFR, ASME BPVC Section VIII Division 1, and GB150. Third-party certification (CCS/BV/ASME U Stamp) is mandatory, with 100% radiographic inspection of welds (weld efficiency = 1.0) and stress-relief heat treatment required.
2. Safety Accessories & Testing
￮ Safety components: DN50 rupture disk, DN15、DN20、DN25、DN32 liquid ball valve, DN20 gas phase valve, Filling nitrogen.
￮ Testing requirements: Hydrostatic test (21 bar), pneumatic tightness test (14 bar); in-service inspection every 2.5 years (in addition to initial inspection).
￮ Operational protection: Maintain positive nitrogen pressure during transportation; temperature ≤ 30℃; avoid exposure to moisture and oxidizing agents.
Core Transportation & Operation Specifications
1. Labeling & Marking
￮ UN 3394: Label with Class 4.2 flammable hazard label + water-reactive subsidiary label; mark "Water prohibited for fire fighting (except as authorized by experts)".
￮ UN 3399: Label with Class 4.3 hazard label; mark water-reactive warning.
￮ Tank marking requirements: Clearly indicate T21 code, UN number, volume, design pressure, and manufacturing date.
2. Loading & Unloading Operations
￮ Conduct the entire process under nitrogen protection to prevent contact with air and water.
￮ Loading/unloading areas must be free of ignition sources; equipped with dry sand, inert powder, emergency eyewash stations, and safety showers.
￮ Leakage response: Cover spills with dry sand immediately; do NOT flush with water.
3. Transport Restrictions
￮ Limited quantity: 0; Exceptional quantity: E0.
￮ Transportation category: V1; dedicated vehicles only; no mixed loading with other dangerous goods.
￮ Packaging specification compliance: Meet Special Provision PP86 and Packaging Instruction P400.
Key Notes & Common Issues
1. UN 3394 vs UN 3399
￮ UN 3394 is pyrophoric (ignites spontaneously on air exposure), while UN 3399 is non-pyrophoric. Both are water-reactive and share T21 tank compatibility, with differences only in labeling and emergency response procedures.
2. Material Selection for Low-Temperature Conditions
Prioritize 09MnNiDR ,16MnDR，SS304 、SS316 for low-temperature applications; use SA-516 for ambient-temperature scenarios to ensure corrosion resistance and low-temperature toughness.
3. Emergency Response Protocols
￮ For leaks: Cover with dry sand or inert powder to prevent spread; do NOT use water for dilution or flushing.
￮ For skin contact: Blot the affected area with dry sand or inert powder first, then wipe with ethanol, rinse thoroughly with water, and seek medical attention immediately.
￮ Personal protective equipment (PPE): Full-body flame-retardant clothing, chemical-resistant gloves, safety goggles, and face shields are mandatory for all operators.
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