The region’s largest provider of chemical tank inspections and repair achieves coveted R-Stamp Welding Certification to expand required services for chemical tankers


Rainier Truck Trailer Tank Repair LLC, which has quadrupled growth since moving to the Port of Kalama last February, now announces it has achieved the coveted R-Stamp Welding Certification to further serve the robust chemical trucking industry. A Department of Transportation (WDOT and USDOT) certified inspection service for large vehicles and tanks carrying chemicals and liquid substances, Rainier is now certified as a full service provider for mandated annual chemical truck inspections.

The company chose the Port of Kalama’s bustling industrial park for its I-5 location, which enables them to better serve a huge national tanker and trucking industry. Rainier, which is a certified HM 183 inspection facility and also manages mechanic and welding operations, operates from its 16,240 square foot industrial facility at the Port.

The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) establishes rules of safety governing the design, fabrication and inspection of boilers and pressure vessels. Welding on pressurized containers, boiler, piping, transfer equipment, and more is not permitted unless certified welders hold the R-Stamp.

“We operate in a very tight niche industry and this I-5 location has enabled us to quadruple growth and positioned us to expand with our new certification,” said Mark Marander, owner Rainier Truck Trailer Tank Repair LLC. “The R-Stamp certification enables us to become a full service tank and truck inspection facility, which has already brought new customers in the last week. We expect accelerated growth because of the requirement for annual chemical truck inspections.”

Rainier joins a growing number of industries and businesses who have found the Port of Kalama an ideal location to grow their businesses. The Port boasts an Industrial Park and acres of shovel-ready land for manufacturing, technology, storage and many other industry sectors. Sixteen acres of public riverfront parks stand out as popular recreational destinations for both locals and tourists. Port officials cite several advantages for businesses like Rainier to expand operations in Kalama including:

“We simply could not ask for a more supportive business partner than the staff at the Port of Kalama—they go above and beyond to ensure our facilities are fully-functional to service our clientele,” continues Marander. “We all feel right at home in Kalama—like we belong here; and there’s an eager skilled workforce ready to support our growth.”

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