Water jet stream and water spray are terms in SDS documents typically referring to the manual firefighting methods, i.e. Hand held hose lines and straight stream-fog nozzle.
Water is the common control media for these types of rooms and depending on the size of the room and quantity of material present, a deluge or closed head water based system should be appropriate. If there is potential for a large spill there are times when foam-water deluge is appropriate. You'll have to assess what is suitable. Also take note that an accidental release in hydraulic systems will atomize the fluid into more of a gaseous state than a pure liquid state which drastically changes the flash point and ignition point temperatures. It is not uncommon for a Class III liquid that normally exists at ambient temperature and atmospheric pressure to replicate a Class I material when released under pressure and especially if at an elevated temperature. So don't skimp on the design density. Craig Prahl | Jacobs | Group Lead/SME - Fire Protection | 864.676.5252 | craig.pr...@jacobs.com<mailto:craig.pr...@jacobs.com> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of Easter, Tim (Contractor) via Sprinklerforum Sent: Tuesday, September 3, 2019 2:07 PM To: sprinklerforum@lists.firesprinkler.org Cc: Easter, Tim (Contractor) <tim.eas...@holston-aap.com> Subject: [EXTERNAL] hydraulic pump for a material lift- Deluge sprinkler? Can you use deluge sprinklers to cover a mechanical room that has a hydraulic pump for a material lift? It appears that water spray is a suitable extinguishing media but not a water jet stream due to potentially scattering the oil and spreading fire. Best, Timothy M. Easter ________________________________ NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer.
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