2725 32ND AVE NE 2024 PROPANE NORTHWEST Plans 2025-08-20

Equivalent Protection to a Water Supply for Industrial and Bulk Facilities In the case where water supply is not available in or near the LP-Gas facility, or is inadequate, or it is prohibitively expensive to connect to a public or private water supply hydrant, alternative methods for providing protection should be considered. In lieu of providing a water supply, several alternatives are indicated in Table 9.1, which can offer an equivalency to a water supply system. The intent of the controls identified in Table 9.1 is to maintain the entire system as a gas-tight entity. These methods include reducing the service life of equipment, increasing the design pressure rating of the system beyond the requirements of NFPA 58, or providing early detection and isolation of the system to ensure product control. This list is not exhaustive and is not ranked in an order of priority. Table 9.1 Suggested Alternative Methods for Industrial and Bulk Plants That Do Not Pose a Hazard But Lack a Water Supply Item# Possible options to implement when adequate water supply is not available 1 Reduce the service life of hoses. 2 Increase frequency of equipment inspection. Establish a service life program for the maintenance of the container pressure relief devices. 3 This could include the installation of a listed multiple port valve and certifying that the relief devices are properly set and maintained every 5 to 10 years. 4 Increase the design strength of the piping and fitting systems. 5 Install emergency shutoff valves in conjunction with container internal valves. 6 Install emergency shutoff valves downstream of transfer pump outlets and upstream of the vapor and liquid valves at the bulkhead. 7 Install pneumatic tubing along the facility boundary to serve as a perimeter fire detection system. This would provide protection of the facility against exposure fires. Provide optical flame detection or linear heat detection, or a gas detection system connected to 8 an isolation valve installed downstream of every liquid and vapor nozzle on the container. This system could also be monitored to send a signal to an alarm company that notifies the fire department of an event. Increase the separation distances of internal facility exposures to the container. These 9 exposures would include a site dumpster,idle or waste pallets and combustibles, and increasing the parking distances between the bobtails and transports in relation to the container. 10 Relocate overhead power lines away from all container and cylinder storage areas to protect against ignition in the event of a line dropping due to wind or power pole impact. 11 Eliminate all combustible vegetation within 30 feet of the LP-Gas container. This can be accomplished using gravel, or paving the site yard. 12 Install tanks using the mounding or burial method. A - 30