Cecil Thank you. I've had Art Black (72 aficionado) go down a list of characteristics of a code dweeb at the start of a presentation. About thirty seconds into the two minute diatribe focus had changed from the front of room to me.
I spent a career in a land locked org ( no docks) and no fur lockers. The the only time I ever asked about old style the FM PE and the Boeing PE were toe to toe at commissioning of an anechoic chamber system. One wanted SSP, the other SSU, upside down, to throw some water back up on the cones. They had telescoping assemblies FM listed for use with Model A's. The both asked me to decide, on their side of course. I asked if old style heads would meet both's intent. Blam. Winning was the goal. So much for science being the guiding method. Then the said as AHJ I had to decide. Right. A grunt fire inspector is going to tell two FPE's what to do in an area with a horrible failure rate and lacking in test fires. That would look good on a witness stand. I can't remember which way they decided. The building is being torn down this year. I bet the acrimony lasts longer. Sometimes being a dweeb and reaching back 50 years for a solution is not popular. I did have confidence you would have the answer. Timing is after Coast Guard/Navy's advocacy of spray -fog nozzles during the War. Hmm. Best Bruce Sent from my Motorola ATRIX™ 4G on AT&T -----Original message----- From: Sprinkler Academy - C Bilbo <[email protected]> To: FORUM <[email protected]> Sent: Fri, Apr 27, 2012 22:34:19 GMT+00:00 Subject: History Lesson - RE: Spray Sprinklers become the Standard I am a geek for this stuff. The "Standard Sprinkler" was researched and developed at Factory Mutual at least as early as 1947. The 1947 edtion of NFPA 13 (NBFU 13) allows for newly designed sprinkler deflectors for effective water distribution to be considered. By 1952, Factory Mutual had enough data to conclude that the new deflector designs provided superior water spray patterns, droplet sizes, and discharge to replace the "Conventional Sprinkler". So, as expected, the term "Spray Sprinkler" makes its first appearance in the 1953 edtion of NBFU 13. It wasn't until the release of the 1955 edition that both, the 'Standard' and the 'Old-Style' (or 'Conventional'), are introduced into the standard. They are both considered "spray sprinklers"..... The new concept is explained in detail in Section 1 - General Information. Article 100 explains that this edition makes a break from the sprinkler that had been used for the previous 70 years. Interestingly, this is also where the vertical line (or 'bar') makes it's first appearance to indicate "new material for this edition". 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 [email protected] OUR STUDENTS SAVE LIVES!! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120427/e1655949/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20120427/2697a622/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
