What is Interline 904 Part A Indivisible Kit and why choose it?
Interline 904 Part A Indivisible Kit is the base component of a two-pack epoxy cargo tank coating designed for the protection of marine and industrial tanks. When mixed with its dedicated curing agent (Part B TCA935), it forms Interline 904 Epoxy Tank Coating, suitable for the carriage of a wide range of aggressive cargoes including solvents (such as methanol), chemicals, clean and dirty petroleum products, and vegetable and animal oils. The system is intended both for newbuilding and for maintenance and repair work, providing a semi-gloss, chemically resistant lining for internal steel surfaces.
Main features
- Two-component epoxy system: Part A base to be mixed with curing agent Part B (TCA935) to form a durable tank lining.
- Wide cargo compatibility: Suitable for many aggressive cargoes including solvents (including methanol), chemicals, clean and dirty petroleum products, and vegetable and animal oils.
- Marine-grade performance: Developed for cargo and grey water tanks in line with Worldwide Marine Specifications.
- Semi-gloss finish: Provides a smooth, easy-to-clean internal tank surface.
- High-build film: Typical dry film thickness of 90 µm for robust protection.
- Multiple application methods: Optimised for airless spray, with roller and brush application recommended only for small areas.
- Certified for specific food-related use: When used as part of an approved scheme, the Interline 904 system has NOHA certification for grain carriage (Food Contact – Carriage of Grain).
- Suitable for steel preparation standards: Applied over abrasive blast-cleaned steel (Sa2½ / SSPC-SP10 for North America).
- Available colours for the Interline 904 system: TCA932-Pink, TCA933-Buff, TCA934-Grey.
Technical characteristics
Product composition and mixing
- Product type: Epoxy cargo tank coating (two-pack system; this item is Part A).
- Curing agent (Part B): TCA935.
- Mix ratio: 6.30 volumes Part A to 1 volume Part B.
- Induction time: Not required.
- Pot life (mixed material):
- 5°C: 5 hours
- 10°C: 4 hours
- 25°C: 3.5 hours
- 35°C: 1.5 hours
Appearance and physical data (Part A / mixed coating)
- Finish: Semi-gloss.
- System colours: TCA932-Pink, TCA933-Buff, TCA934-Grey.
- Volume solids: 48% ± 2% (ISO 3233:1998).
- Typical dry film thickness (DFT): 90 µm.
- Typical wet film thickness (WFT): 188 µm.
- Theoretical coverage: 5.33 m²/litre at 90 µm DFT (allow appropriate loss factors).
- Flash point (typical):
- Part A: 23°C
- Part B: 38°C
- Mixed: 31°C
- VOC (as supplied): 497 g/l (EPA Method 24); 387 g/kg of liquid paint as supplied (EU Solvent Emissions Directive 1999/13/EC).
Drying and overcoating (mixed coating)
- Drying times (ISO methods)
- 5°C: Touch dry 8 h; hard dry 18 h
- 10°C: Touch dry 6 h; hard dry 14 h
- 25°C: Touch dry 3 h; hard dry 7 h
- 35°C: Touch dry 90 min; hard dry 4 h
- Overcoating intervals with Interline 904 (guidance only, subject to climate and ventilation):
- 5°C: Minimum 36 h; maximum 35 days
- 10°C: Minimum 30 h; maximum 34 days
- 25°C: Minimum 16 h; maximum 28 days
- 35°C: Minimum 12 h; maximum 14 days
Application details
- Recommended application method: Airless spray.
- Airless spray parameters:
- Tip size: 0.46–0.58 mm (18–23 thou)
- Total output fluid pressure at tip: not less than 176 kg/cm² (2500 psi)
- Brush/Roller: Recommended for small areas only; multiple coats may be required to achieve specified thickness.
- Conventional spray: Not recommended.
- Thinner: Not recommended. International GTA713 may be used only in exceptional circumstances, maximum 5% by volume. Do not exceed limits imposed by local environmental legislation.
- Cleaner: International GTA713.
Surface preparation (steel substrates)
- General: All surfaces must be clean, dry and free from oil, grease, soluble contaminants and other foreign matter (SSPC-SP1 solvent cleaning as appropriate).
- Newbuilding / major refurbishment:
- Remove weld spatter, smooth weld seams and sharp edges as necessary.
- Abrasive blast clean to Sa2½ (ISO 8501-1:2007). If oxidation occurs between blasting and coating, reblast to the specified visual standard.
- Surface defects revealed by blasting should be ground, welded or otherwise treated appropriately.
- North America marine use: SSPC-SP10 may be used in place of Sa2½ (ISO 8501-1:2007).
- Repairs: Consult International Paint.
Unit size, weight and storage
- Unit configuration (example): 20 litre unit.
- Part A: 17.25 L in 20 L pack
- Part B: 2.75 L in 3 L pack
- Typical unit shipping weight (20 L kit): 29.49 kg.
- Shelf life: Minimum 12 months at 25°C, subject to re-inspection thereafter.
- Storage conditions: Store in dry, shaded conditions away from sources of heat and ignition. Keep containers closed until use.
Applications and use cases
- Cargo tanks: Internal protection of tanks carrying a wide variety of aggressive liquid cargoes, including solvents (including methanol), chemicals, and petroleum products.
- Vegetable and animal oil tanks: Suitable for tanks carrying edible or technical oils where resistance to fats and oils is required.
- Grey water tanks: Use in accordance with Interline 904 Grey Water Tanks Application Guidelines.
- Newbuild projects: Application in shipyards and industrial plants as part of the original tank protection system.
- Maintenance and repair: Refurbishment of existing coated tanks where an Interline 904 system is specified.
For system design and cargo resistance, International Paint should be consulted to confirm that Interline 904 is suitable for the intended range of cargoes.
FAQ – Interline 904 Part A Indivisible Kit
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Is Part A usable on its own?
No. Interline 904 Part A must be mixed with its specified curing agent Part B (TCA935) at 6.30:1 by volume before application.
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Which application method is recommended for large tank areas?
Airless spray is recommended, using a 0.46–0.58 mm (18–23 thou) tip and a minimum fluid pressure of 176 kg/cm² (2500 psi).
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Can I use a roller or brush for the whole tank?
No. Brush and roller application are recommended for small areas only. Multiple coats may be necessary to achieve the specified 90 µm DFT.
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What surface preparation is required before applying Interline 904?
Steel surfaces should be abrasive blast cleaned to Sa2½ (ISO 8501-1:2007) or SSPC-SP10 in North America. Surfaces must be clean, dry and free from contamination.
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What are the approximate drying times?
At 25°C, touch dry is typically 3 hours and hard dry 7 hours. At lower temperatures, drying is slower; at 5°C, touch dry is 8 hours and hard dry 18 hours.
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How long can I wait before overcoating with Interline 904?
At 25°C, the typical minimum overcoating interval is 16 hours with a maximum of 28 days. At 5°C, the minimum is 36 hours and maximum 35 days. These values are guidance only and depend on ventilation and tank geometry.
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Is the product certified for any food-contact related service?
When used as part of an approved scheme, the Interline 904 system has NOHA certification for Food Contact – Carriage of Grain.
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Can Interline 904 be thinned?
Thinning is not recommended. International GTA713 thinner may be used only in exceptional circumstances, up to a maximum of 5% by volume and within local environmental legislation.
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What is the shelf life of the kit?
When stored correctly at 25°C in dry, shaded conditions away from heat and ignition, the shelf life is at least 12 months, subject to re-inspection thereafter.
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Is the product classified as hazardous?
Yes. According to Regulation (EC) 1272/2008, Interline 904 Part A is classified as a flammable liquid, causes skin irritation and serious eye damage, is suspected of damaging the unborn child, and may cause damage to organs through prolonged or repeated exposure.
Section 14 – Transport information
The following information is based on the Safety Data Sheet for Interline 904 Grey Part A:
- UN number / ID number: UN1263
- UN proper shipping name: PAINT
- Transport hazard class: 3 (Flammable liquid)
- Packing group: III
- Environmental hazards: Not classified as environmentally hazardous for transport (ADR/RID, IMDG, IATA: “No”).
- ADR/RID additional information: Tunnel code (D/E).
- IMDG additional information: Emergency schedules F-E, S-E.
- Special precautions for user: Within user’s premises, always transport in closed, upright and secure containers. Ensure personnel know what to do in case of accident or spillage.
- Transport in bulk according to IMO instruments: Not applicable.
Section 8 – Individual protection measures (PPE)
The following personal protection guidance is taken from Section 8 of the Safety Data Sheet for Interline 904 Grey Part A. Selection of PPE must be based on a site-specific risk assessment.
Engineering controls and hygiene
- Use only with adequate ventilation. Apply process enclosures, local exhaust or other engineering controls to keep airborne concentrations below occupational exposure limits and below the lower explosive limit.
- Use explosion-proof ventilation equipment.
- Wash hands, forearms and face thoroughly after handling and before eating, drinking, smoking or using the lavatory.
- Remove contaminated clothing before entering eating areas and wash contaminated garments before reuse.
- Ensure eyewash stations and safety showers are close to the work area.
Eye and face protection
- Wear safety eyewear that complies with an approved standard whenever there is a risk of exposure to liquid splashes, mists, gases or dusts.
- Where contact is possible, use chemical splash goggles and/or a face shield. If inhalation hazards exist, a full-face respirator may be required instead.
Hand protection
- Wear chemical-resistant, impervious gloves complying with an approved standard.
- For prolonged or frequently repeated contact, gloves of protection class 6 (breakthrough time > 480 minutes, EN374) are recommended. Recommended materials: Viton or Nitrile, minimum thickness 0.38 mm.
- For brief contact, gloves of protection class 2 or higher (breakthrough time > 30 minutes, EN374) are recommended. Recommended material: Nitrile, minimum thickness 0.12 mm.
- Replace gloves regularly and if any signs of damage or degradation are observed.
Body and skin protection
- Select protective clothing based on the task and associated risks, and have it approved by a specialist before use.
- When there is a risk of ignition from static electricity, wear anti-static protective clothing including overalls, boots and gloves, in line with EN 1149.
- Use appropriate footwear and any additional protective measures required by the risk assessment.
Respiratory protection
- Based on the hazard and exposure potential, select a respirator that meets the appropriate standards or certifications and use it within a formal respiratory protection program.
- Wear a respirator conforming to EN140 with type A/P2 filter or better when ventilation is inadequate.
- Dry sanding, flame cutting and welding of the dry film generate dust and/or hazardous fumes; wet sanding/flatting is preferred. If adequate local exhaust cannot be provided, suitable respiratory protection must be used.
Environmental exposure controls
- Check emissions from ventilation and process equipment to ensure compliance with environmental legislation.
- If needed, apply fume scrubbers, filters or engineering modifications to keep emissions within acceptable limits.
*Contenido generado por IA
