Uninflammable RIM Coating Spray: KRRIMC200A / KRRIMC200B and KRRIM2000A / KRRIM2000B

Common issues

• Coating delamination or disbonding from the substrate due to inadequate surface preparation before spraying
• Moisture ingress under the coating from a nick or puncture, causing localized frost/ice formation and progressive insulation failure
• Coating cracking or embrittlement from thermal cycling at cryogenic interfaces
• Uneven spray thickness leaving cold spots or elevated heat-leak zones
• Mechanical damage during cargo hold or pipe rack maintenance work
• Weathering/UV degradation on externally exposed coating surfaces

Inspection checklist

• Visual inspection for surface cracking, blistering or discoloration
• Infrared/thermal survey for cold spots indicating local insulation breakdown
• Thickness check at sample points against the as-built design thickness
• Check for frost/ice formation on pipe or tank exterior as a sign of moisture ingress
• Inspect coating at penetrations, supports and flanges, the most common damage points
• Check adhesion at any repair patches from prior work
• Review coating certificate/batch records against the DNV type approval

Service intervals

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

• Repair kit using the same certified RIM coating resin system - not a substitute material
• Certified primer/surface preparation materials per the maker's repair procedure
• Certified tape/mechanical protection layer for repaired areas, matching the original insulation system

Safety

• Cryogenic contact hazard where insulation is damaged near LNG/LPG piping - cold burn risk
• Isocyanate-based spray components used in re-application - respiratory and skin hazard requiring correct PPE and ventilation
• Confined space entry for cargo tank interior inspection or repair
• Flammability of some repair materials before full cure - control ignition sources

Class survey

Note: the catalog category for this entry (Steering Gear) does not match the manufacturer's actual product. Kangrim Insulation Co., Ltd. supplies cargo tank and pipe cryogenic insulation systems for gas carriers, including sprayed RIM/PU coatings, not steering gear. This entry addresses that actual product and should be re-verified against the DNV TA certificate (TAK000028J) before publishing. Class surveys this insulation as part of the gas carrier's cargo containment system survey under the IGC Code - visual condition, thermal performance indicators and repair records are typically reviewed.

Estimated lifetime: Insulation coating life is measured in years of service rather than running hours - commonly rated toward the ship's cargo containment insulation design life (often 20-25 years for gas carrier service) provided the coating is not mechanically breached.