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NFPA 58: 2017 Edition and Beyond!
Eric Nette, P.E.NFPA
NFPA Terms
2
• Step 1: First Draft– Public Input (PI)– First Revision (FR)
• Step 2: Second Draft– Public Comment (PC)– Second Revision (SR)
• Step 3: Technical Session– Notice of Intent to Make a Motion (NITMAM)
Ground Snow Load
• Incidents involving Snow– Problem is two fold
• Snow can damage• Gas follows path of least resistance
– Most Common Incident• Snow falls off Roof onto Equip• Overhangs don’t prevent
– Solution• ASCE Snow Load Calculations• Previously snow depth (not density)
Vehicular Barrier Protection (VBP)• Requirements in NFPA 58 and IFC
– Intended for only accidental damage– IFC requires Bollards in 312.2
• For systems • not cabinets
– NFPA 58 requires VBP• Performance based options• For systems• Cabinets (2014 edition not 2017)
Vehicular Barrier Protection (VBP)• Bollards (IFC and NFPA)
– Concrete filled, 4 in. diameter (Sch-40), 6 ft. steel pipe– 3 ft. embedded in 15 in. diameter concrete footing– Favorable/unfavorable soil conditions not specified
• NFPA Bollards– Same Bollards as IFC or– Performance requirements
• Minimum 3 ft. in height• 6,000 lbf (53,375 N) applied 3 ft. in height
– 12,000 lbf (53,375 N) applied 3 ft. in height
VBP Study• Southwest Research Institute testing
– Propane Education Research Council (PERC)– Bollards
• Prescribed bollards• One with Concrete pad• One without Concrete pad
– Cabinets• One manufacturer• Steel/Aluminum cabinet• 3 conditions
– Braced against concrete– Overfilled with cylinders– Bolted
VBP Study• Testing of mock vehicles
– SUV and Passenger 5-10 mph– 4,000 lbs. 18 in. bumper height– 6,000 lbs. 26 in. bumper height
• Static Loading also tested– Determine total performance of the bollards
• Pulled at top• Unrestrained resisted 300 lbf
• Restrained resisted 11,000+ lbf
VBP Study Findings• Bollards
– Prevented vehicle movement at 5 mph– Did not prevent vehicle movement at 10 mph
• Cabinets– Prevented cylinder failures
• Cylinders pressurized (no failures)• Also tested at higher pressures
Porta-Pac’s and Skid Tanks• Problem
– Autogas- “Chicken before the Egg”– Oil Platform Sites– Lack of delineating with portable containers
• Solution– Construction req. added
• Skid Tanks• Porta-Pacs
– Location req. added– Portable Containers– Portable Storage Containers
Disconnected Containers• Problem
– Containers placed haphazardly• Openings not plugged• Placed randomly despite hazard• PRV’s not in Vapor Space
• Solution– Containers placed in bulk plants– Containers placed in approved areas– Containers placed properly
• Separated as other containers
Hot Air Balloons• Problem
– Containers need to be filled• Specialized
– Cool temperatures at altitudes– Large releases of Propane (Excess-Flow valves)
– Filling Issues• Removing wrappings
• Solution– Must meet FAA Air Worthiness Directives (AWD)
• 14 CFR• Exceptions for Excess-flow Valve• New Filling Requirements
– Allowing Pilot/crew to fill– Doesn’t need to be removed from wrappings– Flight Log
Containers <2 lbs.• Problem
– Emerging market of refillable containers <2 lbs.– Retrofitting of disposable containers to be refilled
• Consumer driven• Youtube instructions
– Some disposables have remaining propane
• Solution– New construction req.– New appurtenance req.
Food Trucks
• Incidents– Explosion in Philadelphia
• Caught on Camera• Not the first, but the most visible• Corroded 25 lbs. DOT cylinder
– Should not have been filled– Various fires
• Multiple Hazards– Electrical– Gas– Cooking (Grease, oils, etc.)
Food Trucks• Issues
– www.nfpa.org/foodtrucksafety– Gaps in Code
• 3 different codes for 3 different hazards/applications– Different experts for different hazards
• Adoption issues– Chicago (since 2012)
» Inspected by Health» Inspected by Fire» Fire Classes
– Indiana» Fire is not allowed to inspect
Questions
Eric Nette, [email protected]