TECHNICAL COMMITTEE ON FIRE PUMPS MEMORANDUM TO: FROM: Technical Committee on Fire Pumps Joanne Goyette, on behalf of C. Duffy / R. P. Benedetti DATE: May 2, 2011 SUBJECT: Letter Ballot on Proposals to Amend NFPA 22 At the January 2011 NFPA 20 Report on Proposals (ROP) meeting in Orlando FL, it was agreed to submit the attached three proposals to amend NFPA 22, Standard for Water Tanks for Private Fire Protection. Since these three proposals are being submitted by the Technical Committee on Fire Pumps, the NFPA Regulations Governing Committee Projects require that there be a formal letter ballot to authorize submitting the proposals in the name of this Technical Committee. Please review the three proposals, mark your ballot accordingly, and return your ballot as directed by the deadline date of Friday, May 13, 2011. Time is of the essence. If you have any questions, please call Bob Benedetti at 617-984-7433. Attachments: Proposals Letter Ballot cc FIM Ballot Folder rpb/jmg
NFPA Technical Committee Document Proposal Form NOTE: All Proposals Must Be Received by 5:00 P.M. EST/EDST on the Published Proposal Closing Date. FOR OFFICE USE ONLY For further information on the standards-making process, please contact the Codes and Standards Administration at 617-984-7249 or visit www.nfpa.org. Log #: For technical assistance, please call NFPA at 617-770-3000 Date Rec'd: Please indicate in which format you wish to receive your ROP/ROC electronic paper download (Note: In choosing the download option you intend to view the ROP/ROC from our Website; no copy will be sent to you.) Date April 29, 2011 Name_NFPA 20 Committee Gayle Pennel Chairman _Tel. No.847-953-7740 Company _NFPA 20 Committee Street Address 1000 Milwaukee Ave 5 th Floor City_Glenview State_IL Zip 60025 Please Indicate Organization Represented (if any) _NFPA 20 Committee 1. (a) NFPA Document Title NFPA 22 NFPA No. & Year2007 (b) Section/Paragraph 3.3.1 2. Proposal recommends: (check one) new text revised text deleted text 3. Proposal (include proposed new or revised wording, or identification of wording to be deleted): (Note: Proposed text should be in legislative format; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording). Insert New definition 3.3.1 Break Tank. A tank providing suction to a fire pump whose capacity is less than the fire protection demand (flow rate times flow duration). Resequence existing section 3.3.1 4. Statement of Problem and Substantiation for Proposal: (Note: State the problem that will be resolved by your recommendation; give the specific reason for your proposal including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.) Guidance for designing break tanks is needed in NFPA 22. This definition is part of the submittal for design guidelines This submittal to NFPA 22 was accepted by the NFPA 20 committee at the Jan 2011 ROP meeting in Orlando 5. Copyright Assignment (a) I am the author of the text or other material (such as illustrations, graphs) proposed in this Proposal. (b) Some or all of the text or other material proposed in this Proposal was not authored by me. Its Source is as follows: (Please identify which material and provide compete information to its source: NFPA 20 I hereby grant and assign to the NFPA all and full rights in copyright in this Comment and understand that I acquire no rights in any publication of NFPA in which this Comment in this or another similar or analogous form is used. Except to the extent that I do not have authority to make an assignment in materials that I have identified in (b) above, I hereby warrant that I am the author of this comment and that I have full power and authority to enter into this assignment. Signature (Required) PLEASE USE SEPARATE FORM FOR EACH COMMENT NFPA Fax: (617) 770-3500 Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269
NFPA Technical Committee Document Proposal Form NOTE: All Proposals Must Be Received by 5:00 P.M. EST/EDST on the Published Proposal Closing Date. FOR OFFICE USE ONLY For further information on the standards-making process, please contact the Codes and Standards Administration at 617-984-7249 or visit www.nfpa.org. Log #: For technical assistance, please call NFPA at 617-770-3000 Date Rec'd: Please indicate in which format you wish to receive your ROP/ROC electronic paper download (Note: In choosing the download option you intend to view the ROP/ROC from our Website; no copy will be sent to you.) Date April 29, 2011 Name_NFPA 20 Committee Gayle Pennel Chairman _Tel. No.847-953-7740 Company _NFPA 20 Committee Street Address 1000 Milwaukee Ave 5 th Floor City_Glenview State_IL Zip 60025 Please Indicate Organization Represented (if any) _NFPA 20 Committee 1. (a) NFPA Document Title NFPA 22 NFPA No. & Year2007 (b) Section/Paragraph 4.1-4.2 2. Proposal recommends: (check one) new text revised text deleted text 3. Proposal (include proposed new or revised wording, or identification of wording to be deleted): (Note: Proposed text should be in legislative format; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording). Insert New Section 4.2 4.1 Capacity and Elevation. 4.1.1* The size and elevation of the tank shall be determined by conditions at each individual property after due consideration of all factors involved. 4.1.2 Wherever possible, standard sizes of tanks and heights of towers shall be as specified in 5.1.3, 6.1.2, 8.1.3, and Section 9.2. 4.1.3 For suction tanks, the net capacity shall be the number of U.S. gallons (cubic meters) between the inlet of the overflow and the level of the vortex plate. 4.1.4 A tank shall be sized so that the stored supply plus reliable automatic refill shall be sufficient to meet the demand placed upon it for the design duration.. 14.5.2 A break tank shall be sized for a minimum duration of 15 minutes with the fire pump operating at 150 percent of rated capacity. 4.2. Liquid Sources. 4.2.1 The adequacy and dependability of the liquid source for filling the are of primary importance and shall be fully determined, with due allowance for its reliability in the future. 4.2.2.1 Any source of water that is adequate in quality, quantity, pressure, and reliability to fill the tank in accordance with this standard shall be permitted. 4.2.2.2 Where the water supply from a public service main is not adequate in quality, quantity, or pressure, an alternative water source shall be provided. 4.2.2.3 The adequacy of the liquid supply shall be determined and evaluated prior to the specification and installation of the tank. Resequence Existing section 4.2 4.15 4. Statement of Problem and Substantiation for Proposal: (Note: State the problem that will be resolved by your recommendation; give the specific reason for your proposal including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.) Guidance for designing break tanks is needed in NFPA 22 The text in this proposal is taken from NFPA 20 This submittal to NFPA 22 was accepted by the NFPA 20 committee at the Jan 2011 ROP meeting in Orlando
5. Copyright Assignment (a) I am the author of the text or other material (such as illustrations, graphs) proposed in this Proposal. (b) Some or all of the text or other material proposed in this Proposal was not authored by me. Its Source is as follows: (Please identify which material and provide compete information to its source: NFPA 20 I hereby grant and assign to the NFPA all and full rights in copyright in this Comment and understand that I acquire no rights in any publication of NFPA in which this Comment in this or another similar or analogous form is used. Except to the extent that I do not have authority to make an assignment in materials that I have identified in (b) above, I hereby warrant that I am the author of this comment and that I have full power and authority to enter into this assignment. Signature (Required) PLEASE USE SEPARATE FORM FOR EACH COMMENT NFPA Fax: (617) 770-3500 Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269
NFPA Technical Committee Document Proposal Form NOTE: All Proposals Must Be Received by 5:00 P.M. EST/EDST on the Published Proposal Closing Date. FOR OFFICE USE ONLY For further information on the standards-making process, please contact the Codes and Standards Administration at 617-984-7249 or visit www.nfpa.org. Log #: For technical assistance, please call NFPA at 617-770-3000 Date Rec'd: Please indicate in which format you wish to receive your ROP/ROC electronic paper download (Note: In choosing the download option you intend to view the ROP/ROC from our Website; no copy will be sent to you.) Date_ April 29, 2011_Name_NFPA 20 Committee Gayle Pennel Chairman _Tel. No.847-953-7740 Company _NFPA 20 Committee Street Address 1000 Milwaukee Ave 5 th Floor City_Glenview State_IL Zip 60025 Please Indicate Organization Represented (if any) _NFPA 20 Committee 1. (a) NFPA Document Title NFPA 22 NFPA No. & Year2007 (b) Section/Paragraph 14.5 2. Proposal recommends: (check one) new text revised text deleted text 3. Proposal (include proposed new or revised wording, or identification of wording to be deleted): (Note: Proposed text should be in legislative format; i.e., use underscore to denote wording to be inserted (inserted wording) and strike-through to denote wording to be deleted (deleted wording). Insert New Section 14.5 14.5 Break Tanks. Where a break tank is used to provide the pump suction water supply, the installation shall comply with this section. 14.5.1 Application. Break tanks are used for one or more of the following reasons: (1) As a backflow prevention device between the city water supply and the fire pump suction (2) To eliminate pressure fluxations in the city water supply and provide a steady suction pressure to the fire pump (3) To augment the city water supply when the volume of water available from the city is inadequate for the fire protection demand 14.5.2 Break Tank Size. The tank shall be sized for a minimum duration of 15 minutes with the fire pump operating at 150 percent of rated capacity. 14.5.3 Refill Mechanism. The refill mechanism shall be listed and arranged for automatic operation. 14.5.3.1 If the break tank capacity is less than the maximum system demand for 30 minutes, the refill mechanism shall meet the requirements in 14.5.3.1.1 through 14.5.3.1.5. 14.5.3.1.1 Dual automatic refill lines, each capable of refilling the tank at a minimum rate of 150 percent of the fire pump(s) capacity, shall be installed. 14.5.3.1.2 If available supplies do not permit refilling the tank at a minimum rate of 150 percent of the rated pump capacity, each refill line shall be capable of refilling the tank at a rate that meets or exceeds 110 percent of the maximum fire protection system design flow. 14.5.3.1.3 A manual tank fill bypass designed for and capable of refilling the tank at a minimum rate of 150 percent of the fire pump(s) capacity shall be provided. 14.5.3.1.4 If available supplies do not permit refilling the tank at a minimum rate of 150 percent of the rated pump capacity, the manual fill bypass shall be capable of refilling the tank at a rate that meets or exceeds 110 percent of the maximum fire protection system design flow. 14.5.3.1.5 A local visible and audible low liquid level signal shall be provided in the vicinity of the tank fill mechanism. 14.5.3.2 If the break tank is sized to provide a minimum duration of 30 minutes of the maximum system demand, the refill mechanism shall meet the requirements in 14.5.3.2.1 through 14.5.3.2.5. 14.5.3.2.1 The refill mechanism shall be designed for and capable of refilling the tank at 110 percent of the rate required to provide the total fire protection system demand [110% (Total Demand - Tank Capacity) / Duration]. 14.5.3.2.2 A manual tank fill bypass designed for and capable of refilling the tank at 110 percent of the rate required to provide the total fire protection system demand [110% (Total Demand - Tank Capacity) / Duration]. 14.5.3.2.3 The pipe between the city connection and the automatic fill valve shall be installed in accordance with NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances. 14.5.3.2.4 The automatic filling mechanism shall be maintained at a minimum temperature of 40 F (4.4 C).
14.5.3.2.5 The automatic filling mechanism shall activate a maximum of 4 in. (152 mm) below the overflow level. Resequence existing sections after 14.5 4. Statement of Problem and Substantiation for Proposal: (Note: State the problem that will be resolved by your recommendation; give the specific reason for your proposal including copies of tests, research papers, fire experience, etc. If more than 200 words, it may be abstracted for publication.) Guidance for designing break tanks currently provided in NFPA 20 should be in NFPA 22 This submittal to NFPA 22 was accepted by the NFPA 20 committee at the Jan 2011 ROP meeting in Orlando 5. Copyright Assignment (a) I am the author of the text or other material (such as illustrations, graphs) proposed in this Proposal. (b) Some or all of the text or other material proposed in this Proposal was not authored by me. Its Source is as follows: (Please identify which material and provide compete information to its source: NFPA 20 I hereby grant and assign to the NFPA all and full rights in copyright in this Comment and understand that I acquire no rights in any publication of NFPA in which this Comment in this or another similar or analogous form is used. Except to the extent that I do not have authority to make an assignment in materials that I have identified in (b) above, I hereby warrant that I am the author of this comment and that I have full power and authority to enter into this assignment. Signature (Required) PLEASE USE SEPARATE FORM FOR EACH COMMENT NFPA Fax: (617) 770-3500 Mail to: Secretary, Standards Council, National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269