Napa Crane Certification for Winery, Hospitality and Quake-Repair Work

Tanks, barrels and tight cellars

Stainless tanks are tall, thin-walled and easily dented, and they often go into buildings with limited door height or between existing tanks with inches to spare. A good tank set relies on correct lifting lugs, spreader bars, tag lines and a signal person who can see both ends. Rooftop work on tasting rooms and caves cut into hillsides adds access problems: narrow vineyard roads, soft shoulders and slopes where cribbing and level outrigger pads take more time than the lift itself.

Harvest also compresses schedules. Equipment that missed its summer window may need to go in while grapes are arriving, with forklifts, trucks and visitors moving around the work area.

Hospitality projects, from hotels downtown to resort buildings up-valley, add structural steel, precast and rooftop equipment to the mix, often on sites with limited staging space and guests nearby.

What 2014 taught local builders

The South Napa earthquake struck at 3:20 in the morning, which kept injuries down, but barrels weighing more than a quarter ton each came off their racks in winery after winery. An early Silicon Valley Bank estimate put wine-industry losses at about $80 million. Downtown, older masonry buildings were damaged, and repair and retrofit work continued for years.

For crane crews, the aftermath meant demolition picks, shoring, new steel frames and seismic bracing, much of it in occupied streets. That experience is a reminder that a lift plan near damaged structures has to account for falling debris, uncertain ground and changing access.

Valley conditions

• Hot, dry summer afternoons up-valley, cooler and breezier near the Carneros district and the bay.
• Morning fog that can linger near the river and limit sight lines.
• Wildfire-season wind events; the 2017 Atlas Fire burned in the hills east of the city.
• Alluvial and river-bottom soils near the Napa River that soften when wet.

Living with the Napa River

Downtown Napa has a long flooding history, and the Napa River flood protection project, a partnership involving the U.S. Army Corps of Engineers and local agencies, reshaped the river through town with terraces, bypass channels, bridge replacements and floodwalls. Work along the river corridor involves sheet piling, bridge girders and precast placed from soft, often saturated banks.

When a crane sets up near the river, the ground may look firm in late summer and behave very differently after winter storms. Ask for a ground-bearing assessment, use properly sized mats and watch for settlement during long lifts.

Getting the right paper

California does not issue a crane operator license. What Title 8 does require is that employers put only accredited, type-certified operators on covered mobile and tower cranes, and that the person signaling is qualified. Smaller cranes and some delivery rigs are exempt from certification but not from training. Check the requirements guide for detail. Many Napa operators start with the mobile crane operator or articulating crane operator course, and winery maintenance crews often benefit from Rigger Level I.