Given the fact that the 1953 edition refered to the original as "spray sprinklers" (the original being the kind that sent "spray" up and down), we could say that both are spray sprinklers. We just started using the term spray when Mr. Thompson from FM started researching the new style deflector that sent all of the "spray" down. It was discovered that enough water was sent to the deck through evaporation and rising heat that it was not necessary to spray water up to the deck. Using all of the energy to send the water down, allowed for better spacing. Standard Spray also can said to have an attribute described as a certain size water droplet (don't have access to my books just now.. between x & y microns, perhaps???). The committee therefore named the new sprinkler style as the "Standard Spray" Sprinkler (and THAT is what the SS is for). And then renamed the original sprinkler to be known as the "conventional sprinkler" (the industry naturally started to use the phrase "old style" because we are now using a 'new style'). SSU = Standard Spray Upright SSP = Standard Spray Pendent
It should be recognized that the above is my opinion as a member of the NFPA, and has not been processed as a formal interpretation in accordance with the NFPA Regulations Governing Committee Projects and should therefore not be considered, nor relied upon, as the official position of the the NFPA, nor any of their technical committees. Sincerely, Cecil Bilbo Academy of Fire Sprinkler Technology Champaign, IL 217.607.0325 www.sprinkleracademy.com ce...@sprinkleracademy.com OUR STUDENTS SAVE LIVES!! > From: fire...@eoni.com > Subject: RE: Re: History Lesson - RE: Spray Sprinklers become the Standard > Date: Fri, 27 Apr 2012 23:42:19 -0700 > > > So the SS is Standard Spray? Or Spray Sprinkler? Was is a straight stream > before? What broke the water stream into droplets? > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120428/978cf1a4/attachment.html> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
