Of note: NFPA 25 -2020 A13.2.3 states that if on a fire pump which is tested annually it not required to perform a main drain test since the water supply is tested through the fire pump. So tis main drain would just be used to drain the wet system for any repairs needed.
From: John Denhardt <[email protected]> Sent: Thursday, May 11, 2023 10:17 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: Fire Pump Drains Craig - 100% agree. All systems need a main drain piped to an acceptable place of discharge that can handle full flow with the fire pump system (if provided) operating. There should also be a method to drain the fire pump system piping. John John August Denhardt, P.E. Vice-President Engineering and Technical Services American Fire Sprinkler Association 301-343-1457 On May 11, 2023, at 12:12 PM, Prahl, Craig <[email protected]<mailto:[email protected]>> wrote: I’m not sure I understand the correlation between system drains and the subject of this post? There needs to be a drain from each sprinkler system valve, wet, dry, PA or Deluge, doesn’t matter. There needs to be a drain in the fire pump room. Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | [email protected]<mailto:[email protected]> | www.jacobs.com<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fnam02.safelinks.protection.outlook.com%2f%3furl%3dhttps%253A%252F%252Furldefense.com%252Fv3%252F__http%253A%252Fwww.jacobs.com%252F__%253B%21%21KZTdOCjhgt4hgw%21-_khxU8gU0_6jc895I7kRbnU8JghRDsWgqOblZ4jr7Qp2IVbR30VYw_hWvNFtphnl0uWpB9KIvbYi1pvZz4%2524%26data%3d05%257C01%257Cjdenhardt%2540stricklandfire.com%257C2129380d08804f1fd3e008db5242e1ae%257Cd658cbf30820420e8485ef2e373e8459%257C0%257C0%257C638194219452249732%257CUnknown%257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%253D%257C3000%257C%257C%257C%26sdata%3deXdq3TZwd5ABk9RVJ3GeROxeZtLDhqKF1K%252Fqh8I32Uw%253D%26reserved%3d0&c=E,1,UO125Bj7VAQzqTXqPcNJd4DjRz5nnEtX9QCkagquLyG5_bZxVhSBZZHYFYVTF7DO2eM96rEzJg8Tmfwqd5c8oYDXtfwASnOVfD4lYBsf&typo=1> 1041 East Butler Road Greenville, South Carolina 29606 CONTACT BY: Phone 1-864-676-5252, Email or MS TEAMS From: Brian Harris <[email protected]<mailto:[email protected]>> Sent: Thursday, May 11, 2023 11:23 AM To: [email protected]<mailto:[email protected]> Subject: [EXTERNAL] [Sprinklerforum] Fire Pump Drains Installing a Dry system fed from a pump and while running the 2” drain outside the building from the dry valve it dawned on me we never show a drain for the wet system. I’m assuming that’s taken care of from the casing drain on the pump? Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fnam02.safelinks.protection.outlook.com%2f%3furl%3dhttps%253A%252F%252Furldefense.com%252Fv3%252F__http%253A%252Fbvssystemsinc.com%252F__%253B%21%21B5cixuoO7ltTeg%21F2vnBf8jFbCIMGxunXjCuULCm5nmOipnJACm9JB3vRtzJ4CbQc5V2JF3OH7Vgp20nZOrM9KYKj4EZ8vSoLLbgehD%2524%26data%3d05%257C01%257Cjdenhardt%2540stricklandfire.com%257C2129380d08804f1fd3e008db5242e1ae%257Cd658cbf30820420e8485ef2e373e8459%257C0%257C0%257C638194219452249732%257CUnknown%257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%253D%257C3000%257C%257C%257C%26sdata%3dJkw7%252Fv0iHOD%252BxwAuYmSD7YMiAAGm8bDelOw1BUuMbnI%253D%26reserved%3d0&c=E,1,ptVk5zAUtktx4e753ksBmZb4nkmcdgQsP-8ixU7IVwrH_iEOkIc_wq6dQUxrG5BvqSLpWgLK8iiR5uebIYQPWxkiskuc_XUoRJhD2aC-CoMS7ievzYahaikNZ8g,&typo=1> Phone: 704.896.9989 Fax: 704.896.1935 ________________________________ 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. _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2flists.firesprinkler.org%2flist%2fsprinklerforum.lists.firesprinkler.org&c=E,1,tcl1ZTuy67ZvTtCnVzxRiVyGnmgUJlKR5FvPBdqEFMyp6AjlNPHW4E4yyOSjcm16fevTHnMibdfb0nPR1avK_s9WWbGelhgicnSQTDyFxMHv&typo=1&ancr_add=1> To unsubscribe send an email to [email protected]<mailto:[email protected]>
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