HYDRATECH SubSea HYDRAWRAP® SYSTEM INSTALLATION PROCEDURE
Prep Surface Measure Fabric |
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| Combine and Mix Wet-Out Separate Primer containers from Wet-Out containers. Pour contents of one container of A side Wet-Out into one container of B side Wet-Out. Scrape out A side container ensuring any residual contents are combined with B side. Mix with jiffy mixer until it is uniform throughout (1-2 minutes). Mixed Wet-Out will provide a 20-25 minute working time at 75˚F. |
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Apply Wet-Out Combine and Mix Primer |
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Apply Primer to Fabric Install Saturated Fabric |
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Specifications
Storage and Handling
- All materials shall be properly stored. Water, contamination, temperatures below 32F and above 100F should be avoided.
- Fabric boxes should not be stored on end, be in contact with moisture or left open in direct sunlight.
- Epoxy system can cause skin irritation and severe irritation to eyes. Skin and eye protection must be worn at all times when working with epoxies.
- MSDS information shall be made available to installation personnel.
- Inspect and certify that all required materials are available, identified by lot numbers, correctly labeled and have not reached their expiration date. Inspect containers for leaks. If leaking contact HydraTech. Inspect resins for crystals. If crystals exist heat material (150˚F or microwave) to melt crystals and use once cool.
- Fabric materials should be visually checked for damage or defects that may affect performance or installation.
- Ensure required tools and equipment are available.
Surface Prep
- The surface preparation method is dependent on the substrate and component(s) which the SubSea HydraWrap System will be applied to. The performance of all coatings is dictated by the ability to bond to the substrate which is controlled by the degree of surface prep. Generally the surface should be accessible to facilitate wrapping, clean, and free of extremely low or high areas.
- The surface must be prepared at least 2” on each side of where fabric will be applied.
- Acceptable methods of prep are that which provides a similar clean textured surface.
- Mark the locations on the prepared surface to clearly define the installation positions or locations.
- Surface preparation of the substrate shall be free of sharp edges. Protrusions shall be removed and large voids shall be filled.
- All sharp edges and corners are rounded to a minimum ½ inch radius. This can also be accomplished by thickened epoxy resin build-up.
- All high/low surface imperfections (including dirt, scale, and other debris) running axially through or part way through the installation surface must be removed.
- Required repairs or patch work shall be completed and cured prior to application of SubSea.
- All components shall be evenly and completely mixed at the proper ratios specified.
- Active leaks must be isolated prior to HydraWrap installation.
Wet-Out
- Surface preparation shall be completed prior to application.
- All manual fabric wet-out saturation work shall be conducted is an environment free of contamination and that has easy access to installation area.
- Lay out the carbon fiber cloths on a non porous clean surface.
- Wet-Out A Side is thoroughly poured into the Wet-Out B Side container.
- Mix thoroughly for 1 to 2 minutes with jiffy mixer.
- Pour equal amounts of resin onto the fabric.
- Using a clean spreader apply the wet out over the entire side of the fabric.
- Verify that the entire fabric is completely wetted out and remove excess resin.
- Working time for Wet-Out once mixed is 20 minutes at 75F. Working time is dependent on material and environmental temperatures. Higher temperatures will create shorter working times and cooler temperatures will provide longer working times.
- After applying Wet-Out, turn pieces over.
Priming
- Primer A Side is thoroughly poured into the Primer B Side container.
- Mix the primer components thoroughly with a power drill or other mixer until there is no marbling and color is even, typically taking about 1-2 minutes.
- Prime by rolling, toweling or brushing on one side of the fabric.
- The Primer acts as an adhesive and also a filler between the substrate and the fabric. Typically applying a 20-30 mil thick layer of primer evenly over the fabric is required. The primer should fully cover the fabric with a smooth surface.
- Working time for primer once mixed is 30 minutes at 75F. Working time is dependant on material and environmental temperatures. Higher temperatures will create shorter working times and cooler temperatures will provide longer working times.
Lay up
- Saturated fabric is to be installed in a fashion that promotes fabric installation tight on surface and free of voids in an even consistent manner.
- A minimum of two layers of fabric is required over entire area of repair.
HydraTech offers complete product support through engineering and technical resources. Contact HydraTech for support regarding the details of any HydraWrap installation.