07/10/2025
Two weeks ago, firefighters from across the county joined us at the Hunterdon County Emergency Services Training Center for our inaugural Rural Water Supply Course — a hands-on, multi-day program focused on water movement in non-hydrated areas.
Thursday kicked off in the classroom, where students received in-depth instruction on fire flow calculations, water supply strategies, tender shuttle operations, and fill/dump site planning.
Saturday morning moved outdoors, where students rotated through advanced drafting technique stations:
- Long Drafting – pulling water from distances beyond standard setups using extended hard suction lengths. The students utilized 118’ of hard sleeve hose with an approximate 15’ vertical elevation change.
- Multi-Tube Drafting – using multiple hard suction lines simultaneously to increase intake and overcome limitations of single intakes.
- Positive Prime Drafting – utilizing high efficiency drafting strainers with built-in jet siphon devices to force water up and through the hard sleeve hose.
- Burp Drafting – a method of securing a draft, utilizing discharges to “burp” the air out of the suction tube.
Saturday afternoon focused on water movement through fill sites and dump site operations:
- Students began with Jumbo Siamese Pump-Offs, where a tender would pump off its tank water through the Jumbo Siamese to the attack engine, flowing water.
- This transitioned into Dump Tank Operations, where tenders emptied into portable tanks. A draft engine would draft from one of the portable tanks and pump the water to the fire attack engine. A separate transfer engine was eventually established to transfer water from the primary dump tank to the drafting tank. This allowed the students to learn the strain this can put on your water supply system when you do not have a dedicated transfer engine.
Sunday’s full-scale exercise was held off-site at Unicom UNICOM Global Science & Technology Park, where students put their skills to the test. For both evolutions, a fill site was established on site to fill the 3 tenders available for the evolution. The fill site was extremely shallow; however, it was able to sustain approximately 1000gpm.
- Morning Evolution: Simulated a 750 GPM sustained fire flow beginning with a Jumbo Siamese, then transitioning into dump tank support.
- Afternoon Evolution: Aimed for a high-flow operation, while 2500 GPM was the target, limited tender availability required adaptation. Using three water tenders and a supplemental draft source, crews sustained an impressive 1500 GPM.
A huge THANK YOU to:
- All participating departments that supplied apparatus, equipment and drinking water.
- Our students for adapting, working hard, and making the course a success despite real-world limitations.
- UNICOM Global – for graciously opening your facility to us, supporting public safety training, and touring our staff through your incredible property.
This was just the first rendition, and we’re already planning improvements and future offerings. Stay tuned!