Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA)

Transcription

1 Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) M E M O R A N D U M DATE: October 3, 2017 TO: Principal and Alternate Members of the Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) FROM: Chelsea Rubadou, Staff Liaison SUBJECT: AGENDA PACKAGE NFPA 750 Second Draft Meeting (A2018) Enclosed is the agenda for the NFPA 750 Second Draft meeting of the Technical Committee on Water Mist Fire Suppression Systems, which will be held on Monday, October 16 th through Tuesday, October 17 th, 2017 in Charleston, SC. Please review the attached Committee Inputs for NFPA 750 and Public Inputs for NFPA 25 in advance, and if you have suggestions, please come prepared with proposed language and respective technical substantiation. In particular, several of the Public Inputs that were submitted to NFPA 25 change ITM frequency. The technical substantiation for any revision to those requirements in NFPA 25 will be critical to support the Committee s action and allow the public to be fully aware of the basis of the decision. If you have any questions prior to the meeting, please do not hesitate to contact me at: Office: (617) crubadou@nfpa.org For administrative questions, please contact Yiu Lee at (617)

2 Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) NFPA 750 Second Draft Meeting (Annual 2018) Monday, October 16 to Tuesday, October 17, 2017 Courtyard Charleston Historic District 125 Calhoun Street Charleston, SC Call to Order 8:00 am ET (10/16) 2. Introductions and Attendance 3. Chairman Comments 4. Approval of Previous Meeting Minutes AGENDA Monday, October 16, 2017 a) First Draft Meeting, Memphis, TN on Oct 25-26, 2016 b) Task Group Report out to WAM-AAA on May 3, 2017 c) Task Group Report out to WAM-AAA on June 19, Staff Liaison Presentation on NFPA Revision Process and A2018 Cycle 6. Task Group Reports a) Task Group on Annex D (will address while reviewing Committee Inputs) Purpose: Larry Fisher to review the applicability of the updated reference in Annex E to Section D.1.2. Since D.1.2 mentions Parts 2, 3, 4, and 5 we need to make sure that the new Annex reference covers the same material. b) Task Group on NFPA 20 Purpose: Task Group 6 to review current water mist language in NFPA 20 and develop any necessary public comments for submittal by this committee. Members: Robert Stubblefield - Chair, Jerry Back, Brad Stillwell, Zach Magnone, and Tom Reser. c) Task Group on NFPA 25 Purpose: Task Group 5 to review current water mist language in NFPA 25 and develop any necessary public inputs for submittal by this committee. Members: Eric Houin - Chair, Dan Hubert, Brad Stillwell, Sean Cutting, Kerry Bell,

3 Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) NFPA 750 Second Draft Meeting (Annual 2018) Monday, October 16 to Tuesday, October 17, 2017 Courtyard Charleston Historic District 125 Calhoun Street Charleston, SC and Jeff Hebenstreit. 7. Preparation of the Second Draft a) Review Committee Inputs (quantity = 5) i. See supplementary material attached for CI-46. Review Water Mist Guidelines draft. ii. See supplementary material attached for CI-47. Review work completed by Larry Fisher (Task Group on Annex D). b) Create Second Revisions 8. New Business a) Review the response from the NFPA 25 Technical Committee on the 6 Public Inputs that WAM-AAA submitted, and create Public Comments for NFPA 25. See attached PI s 193, 200, 201, 202, 203, and 204 for NFPA Adjournment Please submit requests for additional agenda items to the chair and staff liaison at least seven days prior to the meeting.

4 Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) NFPA 750 Second Draft Meeting (Annual 2018) Monday, October 16 to Tuesday, October 17, 2017 Courtyard Charleston Historic District 125 Calhoun Street Charleston, SC Key Dates for the Annual 2018 Revision Cycle Public Input Closing Date June 29, 2016 Final Date for First Draft Meeting December 7, 2016 Posting of Ballot by January 25, 2017 First Draft Ballot Due Date February 15, 2017 Posting of First Draft Report for Public Comment March 1, 2017 Public Comment Closing Date May 10, 2017 Final Date for Second Draft Meeting November 8, 2017 Posting of Ballot by December 20, 2017 Ballots due by January 10, 2018 Posting of Second Draft Report for NITMAM Review January 24, 2018 Closing Date for Notice of Intent to Make a Motion (NITMAM) February 21, 2018 Issuance of Consent Document (No NITMAMs) April 29, 2018 NFPA Annual Meeting June 14, 2018 Issuance of Document with NITMAM August 14, 2018 Technical Committee deadlines are in bold.

5 MINUTES NFPA Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) October 25-26, 2016 First Draft Meeting Springhill Suites Memphis Downtown, 85 West Court Avenue, Memphis, Tennessee Date: October 25, Call to Order. Meeting was called to order by Chair Bob Kasiski at 8:05 AM. 2. Building Safety Message. Building safety was discussed and exits identified by Chair Bob Kasiski. 3. Self-Introductions of Members and Guests. Attendance was taken. Committee members then guests introduced themselves. Those who were present at the meeting or via Adobe connect are listed below:

6 MINUTES NFPA Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) October 25-26, 2016 First Draft Meeting Springhill Suites Memphis Downtown, 85 West Court Avenue, Memphis, Tennessee 4. Chairman Comments. Bob Kasiski, FM Global, Chair of Committee, stated that he would temporarily step down as Chair for actions associated with Public Items 67, 68, 69, 70, 72, 73, and 74. During that period of committee action, Robert Stubblefield, AREVA Inc., Principal Committee Member, will act as Chair to ensure impartiality. 5. Approval of Previous Meeting Minutes. Meeting minutes recorded for the previous Committee meeting held January 29-31, 2013 in Palm Beach Gardens, Florida were approved by committee vote. 6. Committee Training: Overview of NFPA Revision Process and the A2018 Cycle. Overview training for committee provided by Chelsea Tuttle, Staff Liaison. 7. Committee Action on Public Inputs and the Preparation of First Draft. 8. Committee Forms Task Group 1: Purpose: Task Group 1 to develop revised language for excess pressure and to develop technical justification relating to PI 75. Members: Joe Barter - Chair, Dan Hubert, Eric Houin, Brad Stillwell, and Zach Magnone. 9. Task Group 1 Report: Task Group 1 reported on work with recommendations to resolve PI 75 with identified justification for committee action (see CI 2). Task group will continue to develop language for Second Draft Meeting. 10. Chair Temporarily Steps Down: At 10:50 am, Bob Kasiski temporarily steps down as Chair for Committee Action on PI 67, 68, 69, 70, 72, 73, and 74. Robert Stubblefield, Principal Member, assumes Chair temporarily for action on the items above.

7 MINUTES NFPA Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) October 25-26, 2016 First Draft Meeting Springhill Suites Memphis Downtown, 85 West Court Avenue, Memphis, Tennessee 11. Committee Forms Task Group 2: Purpose: Task Group 2 to develop proposed partial reorganization of Chapter 7 to accommodate changes with respect to PI 68. Members: Bob Kasiski - Chair, Dan Hubert, Eric Houin, and Zach Magnone. 12. Interim Chair Rescinded: At 12:20 pm, Interim Chair, Robert Stubblefield restores Bob Kasiski as Chair of the Committee. 13. Break for Lunch: 12:30 to 1:30 PM 14. Committee Action on Public Inputs and the Preparation of First Draft, cont. 15. Task Group 2 Report: Task Group 2 reported on work with recommendations to create First Revisions to support action on PI 68 and to resolve PI 68 with identified justification for committee action. 16. Committee Forms Task Group 3: Purpose: Task Group 3 to develop proposed language to address changes with respect to PI 78. Members: Joe Barter - Chair, Jason Jones, Ruediger Kopp, Jeff Hebenstreit, Larry Fisher, and Robert Upson. 17. Task Group 3 Report: Task Group 3 reported on work with recommendations to support action on PI Committee Forms Task Group 4: Purpose: Task Group 4 to develop proposed updates to address changes and revisions to referenced documents throughout NFPA 750 with respect to PI 2. Members: Brad Stillwell - Chair, Jason Jones, Paul Felch, Ruediger Kopp, Jeff Hebenstreit, Robert Upson, Jon Carpenter, and Larry Fisher. 19. Adjournment of Tuesday Meeting: The meeting was adjourned at 5:30 PM. Date: October 26, Call to Order. Meeting was called to order by Chair Bob Kasiski at 8:10 AM. 2. Committee Action on Public Inputs and the Preparation of First Draft, cont.

8 MINUTES NFPA Technical Committee on Water Mist Fire Suppression Systems (WAM-AAA) October 25-26, 2016 First Draft Meeting Springhill Suites Memphis Downtown, 85 West Court Avenue, Memphis, Tennessee 3. Task Group 4 Report: Task Group 4 compiled a list of updated references relative to the proposed changes in PI 2 for committee action. 4. New Business: Committee action on new business relative to the development of the First Draft and NFPA 20 Technical Committees with respect relevant water mist criteria and pending changes in both documents that may impact NFPA Break for Lunch: 12:30 to 1:30 PM 6. Committee Action on New Business, cont. 7. Committee Forms Task Group 5: Purpose: Task Group 5 to review current water mist language in NFPA 25 and develop any necessary public inputs for submittal by this committee. Members: Eric Houin - Chair, Dan Hubert, Brad Stillwell, Sean Cutting, Kerry Bell, Jeff Hebenstreit, and Lance Harry. 8. Committee Forms Task Group 6: Purpose: Task Group 6 to review current water mist language in NFPA 20 and develop any necessary public comments for submittal by this committee. Members: Robert Stubblefield - Chair, Jerry Back, Brad Stillwell, Zach Magnone, and Tom Reser. 9. Adjournment of Meeting: The meeting was adjourned at 2:52 PM.

9 NFPA 750 Teleconference Meeting; Report from Task Grp on NFPA 20 on Public Comment Submission A teleconference meeting was held on Wednesday, 3-May, 2017 convening at 2:00 pm to discuss the findings of the Task Group established to determine if Public Comments need to be submitted to the NFPA 20 (Standard for the Installation of Stationary Pumps for Fire Protection) Technical Committee. The basis of the Public Comments would be for revisions to NFPA 20 that relate to fire pumps used in water mist system. The following individuals were present on teleconference call: Technical Committee Members Bob Kasiski Chair Paul Anastasia Principal Bob Stubblefield Principal Gerry Back Principal Robert Upson Principal Bob Ballard Principal Kerry Bell Voting Alternate Larry Fisher Principal Larry Carmen Alternate Dan Hubert Principal Sean Ramsey Alternate Brad Stilwell Principal Hong-Zeng (Bert) Yu Alternate NFPA Barry Chase Janna Shapiro Guests Tom Reser Derek Wickersham Jason Jones Brian Jones Gene Hill Staff Liaison Staff Liaison Fire Lion Global Fike Fike Fike Fike Barry Chase was acting as Staff Liaison for NFPA in the absence of Chelsea Rubadou, NFPA 750 Staff Liaison Barry Chase confirmed 9 Technical Committee members are eligible to vote should a vote be taken. Bob Kasiski, Chair identified the objective of the meeting was to discuss the findings of the Task Group to determine if Public Comments need to be submitted to the NFPA 20 (Standard for the Installation of Stationary Pumps for Fire Protection) Technical Committee. The Task Group was established at the 1 st Draft Meeting of NFPA 750 held on October 2016 in Memphis, TN. The Task Group is Chaired by Bob Stubblefield. Bob Stubblefield, Task Group Chair provided a verbal report to the Technical Committee members based upon the Task Group meeting that was held on 7-April, 2017 as follows: NFPA 750, Section states that the pump needs to be sized to meet required capacity and pressure. NFPA 750, Section states that the pump needs to be sized to meet 110% of the required capacity and pressure. NFPA 20 and 25 all refer to 150% of the system capacity for pump Inspection, Testing and Maintenance o Chapter 15 of NFPA 750 points to NFPA 25 for Inspection, Testing and Maintenance Page 1 of 2

10 NFPA 750 Teleconference Meeting; Report from Task Grp on NFPA 20 on Public Comment Submission In FR-17, Section (General Requirements) for NFPA 20 The available flow and pressure at the fire pump discharge at the lowest permissible suction pressure shall be a minimum of 100% of rated flow. o Our Technical Committee needs to confirm the correct value of 100 vs 110% before submitting a Public Comment to NFPA 20. The Task Group by itself could not identify which is the correct value. o A Public Comment only needs to submit to NFPA 20 if our Technical Committee agrees that 110% is the correct requirement Thanks to the Task Group which comprised of Gerry Back, Tom Reser and Bob Stubblefield. Bob Kasiski and Chelsea Rubadou also participated in the Task Group meeting. Discussion followed between the various Technical Committee members facilitated by Bob Stubblefield, Gerry Back and Bob Kasiski. The basis of the discussion was determining the basis of the pump capacity in NFPA 750, the impact that pump pressure has to properly form water droplets at the nozzle and the impact this has on both positive displacement pumps used in high pressure water mist system and centrifugal pumps used in low pressure water mist systems. Based upon the discussion a motion was made and seconded; The available flow and pressure at the fire pump discharge shall be adequate to meet 100% of the maximum fire protection demand A roll call ballot was taken with the following results: Aye : 4 votes Nay : 5 votes Motion Failed Further discussion determined it is the intent of NFPA 750 to have two different requirements, one which is to address the capacity of the water supply (110%) and the second is to address the capacity of the pump (100%). In addition, depending upon the type of pump, this needs to take into account the performance curve of the pump. It was mutually agreed upon that further clarification is needed for the Chapter 12 Water Supply requirements to differentiate from the requirements of Chapter 4. Based upon that discernment the Technical Committee came to consensus that a Public Comment to NFPA 20 is not warranted. The proposed 1 st Revisions of NFPA 750 will be reviewed to determine if it will be permissible to add these clarifications in the 2 nd Draft of NFPA 750. Barry Chase reminded the committee of the following dates: o Public Comment closing date for NFPA 20 and NFPA 750: May 10, 2017 o Public Input closing date for NFPA 25: June 28, 2017 The meeting was adjourned at 3:20 pm Page 2 of 2

11 NFPA 750 Task Group Report out to TC on Public Inputs for NFPA 25 June 19, 2017 Attendance: Joseph Barter, Robert Kasiski, Bob Ballard, Milosh Puchovsky, Lari Laakso, Tom Ziegler, Kerry Bell, Michael Koczera, Eric Houin, Dennis Taylor, Larry Fisher, Gerald Back, Larry Carmen, Anthony Cacioppo, Bob Upson, Sean Ramsey, Sean Cutting, Chelsea Rubadou Began at 11:00 AM ET The Technical Committee reviewed the draft document, which included a full rewrite of Chapter 12 of NFPA 25. o The Technical Committee made edits o The Technical Committee voted to submit all 6 Public Inputs Kerry, Bob K., and Eric H. to decide which of them will submit the Public Inputs before the closing date. Kerry will be at the NFPA 25 meeting. Adjourned 11:45 AM ET

12

13

14 Water-Based Fire Protection Systems Standard for the Inspection, Testing, and Maintenance of

15

16 Alternative Arrangements for Halon Fire-Extinguishing Systems in Machinery Spaces and Pump-Rooms Amendments to the Test Method for Equivalent Water-Based Fire-Extinguishing Systems for Machinery Spaces of Category A and Cargo Pump-Rooms Contained in MSC/Circ. 668 Revised Guidelines for Approval of Sprinkler Systems Approval Standard for Water Mist Systems Standard for Water Mist Nozzles for Fire Protection Service Fixed firefighting systems watermist systems design and installation International Code for Application of Fire Test Procedures

17 Application of Safety Instrumentation to the Process Industries

18 Water-Based Fire Protection Systems Standard for the Inspection, Testing, and Maintenance of

19

20 Alternative Arrangements for Halon Fire-Extinguishing Systems in Machinery Spaces and Pump-Rooms Amendments to the Test Method for Equivalent Water-Based Fire-Extinguishing Systems for Machinery Spaces of Category A and Cargo Pump-Rooms Contained in MSC/Circ. 668 Revised Guidelines for Approval of Sprinkler Systems Approval Standard for Water Mist Systems Standard for Water Mist Nozzles for Fire Protection Service Fixed firefighting systems watermist systems design and installation International Code for Application of Fire Test Procedures

21 Application of Safety Instrumentation to the Process Industries

22 M E M O R A N D U M To: NFPA 750 Technical Committee From: L E Fisher, US Coast Guard Date: 1 September 2017 Re: Update of Reference in Annex D ISA Publication Currently, Annex D, Reliability, of NFPA 750, cites International Society of Automation (ISA) S84.01, Application of Safety Instrumentation to the Process Industries, for predictive techniques that may be used to determine the reliability of water mist systems. Accordingly, Annex E listed the reference. However, First Revision No. 36-NFPA is an update to the current edition of the ISA reference, ISA P1, Functional Safety: Safety Instrumented Systems for the Process Industry Sector - Part 1: Framework, Definition, Systems, Hardware and Software Requirements, The question was raised whether the material in Annex D.1.2 still reflects the new ISA reference or does it need to be updated. The standard currently set forth in Annex D is the 1996 edition. In 2004, the ISA, along with the European Committee for Electrotechnical Standardization and ANSI, updated and harmonized the international standards for process safety instrumentation, resulting in the adoption of IEC The US version of this standard is ANSI/ISA , Functional Safety: Safety Instrumented Systems for the Process Industry Sector. This standard includes significant updates and a different organization than the 1996 version, requiring an update to its reference in Annex D. Basically, the computational techniques for determining reliability of systems, namely simple equations, fault tree analysis, Markov analysis and Logic Solvers, that were in Parts 2, 3, 4 and 5 of the 1996 reference are now referenced in Part 3 of the 2004 version. Further, a technical report, ISA- TR , Safety Integrity Level (SIL) Verification of Safety Instrumented Functions, provides guidance on using these techniques to estimate the reliability of systems. Thus, Annex D.1.2 needs to be updated. The following is suggested: D.1.2 Predictive Techniques. Predictive techniques outlined in ISA-S84.01, Application of Safety Instrumentation to the Process Industries ISA-TR , Safety Integrity Level (SIL) Verification of Safety Instrumented Functions, provide guidance to determine the safety integrity level (SIL) of a protection system. The main document establishes SILs needed for various safety systems (SIS). Parts 2, 3 and 4 of ISA-S84.01This technical report provides information on three different methods for determining reliability that can be applied to water mist systems: simplified equations, fault tree analysis, and Markov analysis, and Logic Solvers. Part 5 of ISA-S84.01 determines the probability of failure on demand (PFD) of Logic Solvers via Markov analysis.

23 The average probability of failure of a system at various SILs is shown in Table D.1.2. [Also suggest deleting Table D.1.2, which is of no use unless you are using the reference anyway]. The user of the system should designate the safety level desired based on either dollar loss or personal injury. Where a high level of safety is required, the analysis should be done by an independent third party. For lower safety levels, the manufacturer could do the analysis. The U.S. Navy used reliability studies to evaluate the reliability of halon systems for shipboard use. Approval for service was dependent on a reliability study. The main advantage to the analysis was the identification of single points of failure. Failure rates were determined for the systems designed, but these appeared to be less meaningful than identifying single points of failure. Reliability was improved by eliminating abort valves and installing a manual actuation system to bypass the time delay for the predischarge alarm. Manual activation was acceptable because the protected areas onboard ship are constantly occupied. E ISA Publications. Instrumentation, Systems, and Automation The International Society of Automation, 67 T.W. Alexander Drive, P.O. Box 12277, Research Triangle Park, NC ISA-S84.01, Application of Safety Instrumentation to the Process Industries, 1996 ISA-TR , Safety Integrity Level (SIL) Verification of Safety Instrumented Functions.

24 National Fire Protection Association Report 1 of 13 10/3/2017, 2:26 PM Public Input No. 193-NFPA [ Sections 12.1, 12.2, 12.3 ] Sections 12.1, 12.2, Inspection and Testing Components and Systems All components and systems shall be inspected and tested to verify that they function as intended Water mist systems that are equipped with an additive system shall be tested with the specific additive system engaged or used during the acceptance testing Common Components and Valves. Common components and valves shall be inspected, tested, and maintained in accordance with Chapter Requirements.

25 National Fire Protection Association Report 2 of 13 10/3/2017, 2:26 PM The components of typical water mist systems to be inspected and tested are provided in Table Table Mist Systems Additive storage cylinders Item Task Weekly Monthly Quarterly Inspect general condition, corrosion. Semiannually Annually Other Inspect quantity of additive agent. Test quality of additive agent. Test additive injection, full discharge test. Compressed gas cylinders Inspect support frame and cylinder restraints. Inspect cylinder pressure (unsupervised). Inspect cylinder pressure (supervised). Confirm cylinder control valve is open.

26 National Fire Protection Association Report 3 of 13 10/3/2017, 2:26 PM Inspect cylinder capacity and pressure rating. Inspect cylinder compliance specification. Confirm compressed gas meets specifications (moisture, cylinder pressure). Hydrostatic test cylinders. Control equipment Inspection, testing, and maintenance in accordance with the requirements of NFPA years Enclosure features, interlocks Inspect enclosure integrity. Plant air, compressors, and receivers Inspect air pressure (unsupervised). Inspect air pressure (supervised). Start compressor. Check compressor/receiver capacity, changes. Inspect compressed air moisture content.

27 National Fire Protection Association Report 4 of 13 10/3/2017, 2:26 PM Clean filters, moisture traps. Test full capacity, duration, and any changes in other demands. Pneumatic valves Inspect cylinder valves, master release valves. Inspect all tubing associated with release valves. Test solenoid release of master release valve. Test manual release of master release valve. Test operation of slave valves. Reset all pneumatic cylinder release valves. Test on-off cycling of valves intended to cycle.

28 National Fire Protection Association Report 5 of 13 10/3/2017, 2:26 PM Pumps and drivers Inspection, testing, and maintenance in accordance with the requirements of NFPA 20 and NFPA 25. Standby pump Inspect and empty the moisture trap, oil injection (pneumatic). Inspect compressed gas supply, inlet air pressure. Inspect outlet water (standby) pressure. Test start/stop pressure settings for standby pressure. System control valves Inspection, testing, and maintenance in accordance with the requirements of NFPA 25. Ventilation Test interlocked systems (e.g., ventilation shutdown). Test shutdown of fuel/lubrication systems. Water mist system piping and nozzles Water recirculation tank Inspection, testing, and maintenance in accordance with NFPA 25. Inspect sample of nozzle screens and strainers (see of NFPA 750). Inspect water level (unsupervised). After discharge

29 National Fire Protection Association Report 6 of 13 10/3/2017, 2:26 PM Inspect water level (supervised). Inspect supports, attachments. Test low water level alarm. Inspect water quality, drain, flush, and refill. Test operation of float-operated valve. Test pressure at outlet during discharge. Test backflow prevention device (if present). Inspect and clean filters, strainers, cyclone separator. Water storage cylinder Inspect water level (load cells). (high pressure)

30 National Fire Protection Association Report 7 of 13 10/3/2017, 2:26 PM Inspect water level (unsupervised). Inspect support frame/restraints. Inspect vent plugs at refilling. Inspect cylinder pressure on discharge. Inspect filters on refill connection. Water storage tanks Inspect water level (unsupervised). Inspect water level (supervised). Confirm sight glass valves are open. Inspect tank gauges, pressure.

31 National Fire Protection Association Report 8 of 13 10/3/2017, 2:26 PM Inspect all valves, appurtenances. Drain tank, inspect interior, and refill. Inspect tank condition (corrosion). Inspect water quality. Inspect water temperature. Water supply (general) Inspect source pressure. Extreme weather Inspect source quality (*first year). * Test source pressure, flow, quantity, duration.

32 National Fire Protection Association Report 9 of 13 10/3/2017, 2:26 PM Water mist nozzles shall be inspected from the floor level annually Any water mist nozzle that shows signs of any of the following shall be replaced: (1) Leakage (2) Corrosion (3) Physical damage (4) Loss of fluid in the glass bulb heat responsive element (5)* Loading (6) Painting, unless painted by the water mist nozzle manufacturer Any water mist nozzle that has been installed in the incorrect orientation shall be corrected by repositioning the branch line, drop, or sprig, or shall be replaced Water mist nozzles with glass bulbs shall be replaced if the bulbs are empty of fluid Water mist nozzles installed in concealed spaces such as above suspended ceilings shall not require inspection Water mist nozzles installed in areas that are inaccessible for safety considerations due to process operations shall be inspected during each scheduled shutdown Stock, furnishings, or equipment closer to the water mist nozzle than permitted by the clearance specified in the manufacturer s installation instructions shall be corrected The supply of spare automatic water mist nozzles shall be inspected annually for the correct number and type of water mist nozzles as required by NFPA * Where required by this section, sample automatic water mist nozzles shall be submitted to a recognized testing laboratory acceptable to the authority having jurisdiction for functional testing Automatic water mist nozzles that have been in service for 20 years shall be replaced, or representative samples shall be tested and then retested at 10-year intervals * Where water mist nozzles are subjected to harsh environments, including corrosive atmospheres and corrosive water supplies, they shall be either replaced or representative samples tested on a 5-year basis *

33 National Fire Protection Association Report 10 of 13 10/3/2017, 2:26 PM A representative sample of water mist nozzles for testing per shall consist of a minimum of four water mist nozzles or 1 percent of the number of water mist nozzles per individual water mist nozzle sample, whichever is greater Where one water mist nozzle within a representative sample fails to meet the test requirement, all water mist nozzles within the area represented by that sample shall be replaced Maintenance General Maintenance shall be performed to keep the system equipment operable or to make repairs Where required by the manufacturer, maintenance shall be performed on devices not described in this standard As-built system installation drawings, original acceptance test records, and device manufacturer's maintenance bulletins shall be retained to assist in the proper care of the system and its components Replacement components shall be in accordance with the manufacturer's specifications and the original system design Spare components shall be accessible and shall be stored in a manner to prevent damage or contamination * After each system operation, a representative sample of operated water mist nozzles in the activated zone shall be inspected After each system operation due to fire, the system filters and strainers shall be cleaned or replaced Where applicable to the type of water mist system, scheduled maintenance shall be performed as outlined in Table Table Maintenance Frequencies Item Activity Frequency Water tank Drain and refill Annually System Flushing Annually Strainers and filters Clean or replace as required After system operation Water Mist Nozzles * Replacement water mist nozzles shall have the proper characteristics for the application intended, including the nozzle model and temperature rating.

34 National Fire Protection Association Report 11 of 13 10/3/2017, 2:26 PM Only new water mist nozzles shall be used to replace existing water mist nozzles * A supply of spare water mist nozzles (never fewer than three) shall be maintained on the premises so that any water mist nozzles that have operated or been damaged in any way can be promptly replaced The water mist nozzles shall correspond to the manufacturer(s), models, and temperature ratings of the water mist nozzles in the property The automatic water mist nozzles shall be kept in a cabinet located where the temperature will at no time exceed 100 F (38 C) The stock of spare thermally activated nozzles shall include all types and ratings installed and shall be as follows: (1) For systems having fewer than 50 nozzles, not fewer than 3 nozzles (2) For systems having 50 to 300 nozzles, not fewer than 6 nozzles (3) For systems having 301 to 1000 nozzles, not fewer than 12 nozzles (4) For systems having over 1000 nozzles, not fewer than 24 nozzles * Where required by the manufacturer, a special water mist nozzle wrench shall be provided and kept in the cabinet to be used for the removal and installation of nozzles One water mist nozzle wrench shall be provided for each type of nozzle installed Protective Coverings Water mist nozzles protecting spray areas and mixing rooms in resin application areas installed with protective coverings shall continue to be protected against overspray residue so that they will operate in the event of fire * Water mist nozzles installed as described in shall be protected using cellophane bags having a thickness of in. (0.076 mm) or less or thin paper bags Coverings shall be replaced periodically so that heavy deposits of residue do not accumulate Water mist nozzles shall not be altered in any respect or have any type of ornamentation, paint, or coatings applied after shipment from the manufacturer Automatic water mist nozzles used for protecting commercial-type cooking equipment and ventilating systems shall be replaced annually.

35 National Fire Protection Association Report 12 of 13 10/3/2017, 2:26 PM Where automatic water mist nozzles are used and annual examination shows no buildup of grease or other material on the nozzles, the nozzles shall not be required to be replaced Training All persons who might be expected to inspect, test, maintain, or operate water mist systems shall be trained thoroughly in the functions they are expected to perform Refresher training shall be provided as recommended by the manufacturer or by the authority having jurisdiction. Additional Proposed Changes File Name Description Approved Public_Input_for_NFPA_25_- _Chapter_12_Global.docx Revised Chapter 12 Water Mist Systems pdf Statement of Problem and Substantiation for Public Input IMO Testing Program on automatic sprinkler and water mist systems As Chair of the NFPA 750 Technical Committee, I am submitting a Public Input on behalf of the NFPA 750 Technical Committee. The attached Public Input passed ballot with the 2/3 majority stated in NFPA regulations. The Public Input being submitted for the revision of Chapter 12 is to change the existing Table and requirements to be aligned with the format used in the other chapters of NFPA 25. There are neither changes in frequencies nor current requirements in this Public Input, with the exception of Tasks from the current Tabled and are being converted to text requirements. Text requirements for tasks are based upon existing similar requirements for water spray (Chap 10), foam systems (Chap 11). In addition, the new Table has been updated to include reference to those appropriate Chapters and sections (Chap. 8 and 13) for water mist systems within the NFPA 25 Standard. Additional requirements have added to added to Chapter 12 for the usage of compressed air cylinders with water mist systems not previously addressed by NFPA 25. As noted previously, the frequency in has been changed to address operational matters identified in the field. The basis for this change is Agenda Item 20 from the 94th Session of the Maritime Safety Committee, 12-September, 2014 of the International Maritime Organization (MSC 94/20/2). Please note in our submission due to difficulties working with the TerraView software it may not be apparent, but it is the intention to have the current Table and deleted and replaced with the Table identified in the Public Input submission. Submitter Information Verification Submitter Full Name: Robert Kasiski Organization: FM Global Affilliation: NFPA 750 Technical Committee

36 National Fire Protection Association Report 13 of 13 10/3/2017, 2:26 PM Street Address: City: State: Zip: Submittal Date: Tue Jun 27 16:38:39 EDT 2017 Copyright Assignment I, Robert Kasiski, hereby irrevocably grant and assign to the National Fire Protection Association (NFPA) all and full rights in copyright in this Public Input (including both the Proposed Change and the Statement of Problem and Substantiation). I understand and intend that I acquire no rights, including rights as a joint author, in any publication of the NFPA in which this Public Input in this or another similar or derivative form is used. I hereby warrant that I am the author of this Public Input and that I have full power and authority to enter into this copyright assignment. By checking this box I affirm that I am Robert Kasiski, and I agree to be legally bound by the above Copyright Assignment and the terms and conditions contained therein. I understand and intend that, by checking this box, I am creating an electronic signature that will, upon my submission of this form, have the same legal force and effect as a handwritten signature

37 Chapter 12 Water Mist Systems 12.1 Inspection and Testing. General Minimum Requirements This chapter shall provide the minimum requirements for the routine inspection, testing, and maintenance of water mist systems only Table shall be used to determine the minimum required frequencies for inspection, testing, and maintenance Common Components and Valves. Common components and valves shall be inspected, tested, and maintained in accordance with Chapter Impairments. The procedures outlined in Chapter 15 shall be followed where an impairment to protection occurs Hose Connections. Hose connections shall be inspected, tested, and maintained in accordance with Chapters 6 and Components and Systems All components and systems shall be inspected and tested to verify that they function as intended Water mist systems that are equipped with an additive system shall be tested with the specific additive system engaged or used during the acceptance testing Common Components and Valves. Common components and valves shall be inspected, tested, and maintained in accordance with Chapter Requirements. The components of typical water mist systems to be inspected and tested are provided in Table Table Mist Systems

38 Semi-. Item Task Weekly Monthly Quarterly annually Annually Additive storage cylinders Compressed gas cylinders Control equipment Inspect general condition, corrosion. Inspect quantity of additive agent. Test quality of additive agent. Test additive injection, full discharge test. Inspect support frame and cylinder restraints. Inspect cylinder pressure (unsupervised). Inspect cylinder pressure (supervised). Confirm cylinder control valve is open. Inspect cylinder capacity and pressure rating. Inspect cylinder compliance specification. Confirm compressed gas meets specifications (moisture, cylinder pressure). Hydrostatic test cylinders. Inspection, testing, and maintenance in accordance with the Other 5 12 years

39 Semi-. Item Task Weekly Monthly Quarterly annually Annually Enclosure features, interlocks Plant air, compressors, and receivers Pneumatic valves requirements of NFPA 72. Inspect enclosure integrity. Inspect air pressure (unsupervised). Inspect air pressure (supervised). Start compressor. Check compressor/receiver capacity, changes. Inspect compressed air moisture content. Clean filters, moisture traps. Test full capacity, duration, and any changes in other demands. Inspect cylinder valves, master release valves. Inspect all tubing associated with release valves. Test solenoid release of master release valve. Test manual release of master release valve. Other

40 Semi-. Item Task Weekly Monthly Quarterly annually Annually Pumps and drivers Standby pump System control valves Ventilation Test operation of slave valves. Reset all pneumatic cylinder release valves. Test on-off cycling of valves intended to cycle. Inspection, testing, and maintenance in accordance with the requirements of NFPA 20 and NFPA 25. Inspect and empty the moisture trap, oil injection (pneumatic). Inspect compressed gas supply, inlet air pressure. Inspect outlet water (standby) pressure. Test start/stop pressure settings for standby pressure. Inspection, testing, and maintenance in accordance with the requirements of NFPA 25. Test interlocked systems (e.g., ventilation shutdown). Test shutdown of fuel/lubrication systems. Other

41 Semi-. Item Task Weekly Monthly Quarterly annually Annually Water mist system piping and nozzles Water recirculation tank Water storage cylinder. (high pressure) Inspection, testing, and maintenance in accordance with NFPA 25.. Inspect sample of nozzle screens and strainers (see of NFPA 750). Inspect water level (unsupervised). Inspect water level (supervised). Inspect supports, attachments. Test low water level alarm. Inspect water quality, drain, flush, and refill. Test operation of float-operated valve. Test pressure at outlet during discharge. Test backflow prevention device (if present). Inspect and clean filters, strainers, cyclone separator. Inspect water level (load cells). Inspect water level (unsupervised). Other After discharge

42 Semi-. Item Task Weekly Monthly Quarterly annually Annually Water storage tanks Water supply (general) Inspect support frame/restraints. Inspect vent plugs at. refilling. Inspect cylinder pressure on discharge. Inspect filters on refill connection. Inspect water level (unsupervised). Inspect water level (supervised). Confirm sight glass valves are open. Inspect tank gauges, pressure. Inspect all valves, appurtenances. Drain tank, inspect interior, and refill. Inspect tank condition (corrosion). Inspect water quality. Inspect water temperature. Inspect source pressure. Inspect source quality. (*first year). Test source pressure, flow, quantity, duration. * Other Extreme weather

43 Table Summary of Water Mist System Inspection, Testing, and Maintenance Inspection Item Frequency Reference Additive storage cylinders Quarterly/Semiannually Air compressors and receivers Monthly Chapter 13 (see ) Backflow preventers Chapter 13 (see ) Compressed gas storage cylinders, hoses, support and restraint Compressed gas storage cylinder valve and pressure Quarterly/Annually/Every 5 years Monthly/Quarterly Control equipment NFPA 72 Detection systems NFPA 72 Enclosure features, interlocks Semiannually , , , , , , Fire pumps and drivers Chapter 8 Gauges (piping system) Quarterly Chapter 13 (see ) Hangers, braces and supports Nozzles Annually and after each system discharge or activation Annually and after each system discharge or activation Pneumatic valves Monthly Pneumatic valve tubing Quarterly Pneumatically operated standby pumps Strainers and filters Monthly After each system discharge or activation System control valves Annually Chapter 13 System piping, tubing and fittings Annually and after each system discharge or activation

44 Item Frequency Reference Water recirculation tanks Monthly/Quarterly/Annually Water storage cylinders (high pressure) Quarterly/Semiannually/Annually Water storage tanks Chapter 9 Water supply Quarterly/Annually Testing Additives and injection system Air compressors and receivers , , , , , , Annually , Annually Chapter 13 (see ) Backflow preventers Chapter 13 (see ) Compressed gas storage cylinder 5-12 years Control equipment Detection systems Fire pumps and drivers Gauges (piping system) 5 years Hoses 5 years Interlocks Annually Nozzles, Automatic At 5 years and every 5 years thereafter Nozzles, Open Annually Pneumatic valves Semiannually Pneumatic valve solenoid releases Pneumatically operated standby pumps Annually Quarterly Strainers and filters Annually System control valves Annually Water mist system Annually Chapter 8 (see 8.3), Chapter 13 (see , )

45 Item Frequency Reference Water recirculation tanks Annually Water storage cylinders (high pressure) 5-12 years Water storage tanks Water supply Annually Maintenance Air compressors and receivers Annually Chapter 13 (see ) Backflow preventers Chapter 13 (see ) Control equipment NFPA 72 Detection systems NFPA 72 Fire pumps and drivers Chapter 8 (see 8.5) Pneumatically operated standby pumps Strainers and filters Every 5 years Annually and after each system discharge Water mist system Annually Water tanks Annually Inspection Water Mist Nozzles Water mist nozzles shall be inspected from the floor level annually Any water mist nozzle that shows signs of any of the following shall be replaced: (1) Leakage (2) Corrosion

46 (3) Physical damage (4) Loss of fluid in the glass bulb heat responsive element (5) *Loading (6) Painting, unless painted by the water mist nozzle manufacturer Any water mist nozzle that has been installed in the incorrect orientation shall be corrected by repositioning the branch line, drop, or sprig, or shall be replaced Water mist nozzles with glass bulbs shall be replaced if the bulbs are partially or fully empty of fluid Water mist nozzles installed in concealed spaces such as above suspended ceilings shall not require inspection Water mist nozzles installed in areas that are inaccessible for safety considerations due to process operations shall be inspected during each scheduled shutdown Stock, furnishings, or equipment closer to the water mist nozzle than permitted by the clearance specified in the manufacturer s installation instructions shall be corrected Open nozzles shall be removed, inspected and cleaned during the flushing procedure for the mainline strainer The supply of spare automatic water mist nozzles shall be inspected annually for the correct number and type of water mist nozzles as required by NFPA Strainers and filters Mainline strainers and filters shall be flushed until clear after each operation or flow test Individual water mist nozzle strainers and filters shall be inspected and cleaned after each operation or flow test All strainers and filters shall be inspected and cleaned in accordance with the manufacturer s instructions Damaged or corroded parts or assemblies shall be replaced or repaired System Piping, Tubing and Fittings.

47 Water mist system distribution pipe and fittings shall be inspected annually from the floor level Pipe and fittings shall be free of mechanical damage, leakage, and corrosion Water mist system distribution piping shall not be subjected to external loads by materials either resting on the pipe or hung from the pipe Pipe and fittings installed in concealed spaces such as above suspended ceilings shall not require inspection Pipe and fittings installed in areas that are inaccessible for safety considerations due to process operations shall be inspected during each scheduled shutdown Hangers, Braces, and Supports. A See A Water mist system distribution pipe hangers, braces, and supports shall be inspected annually from the floor level Hangers, braces, and supports shall not be damaged, loose, or unattached Hangers, braces, and supports that are damaged, loose, or unattached shall be replaced or refastened * Hangers, braces, and supports installed in concealed spaces such as above suspended ceilings shall not require inspection. A Examples of hangers and seismic braces installed in concealed areas include some floor/ceiling or roof/ceiling assemblies, pipe chases, and other inaccessible areas Hangers, braces, and supports installed in areas that are inaccessible for safety considerations due to process operations shall be inspected during each scheduled shutdown High Pressure Storage Cylinder Assemblies (Gas and Water) All cylinders and mounting brackets shall be fastened securely in accordance with the manufacturer s requirements Quarterly, compressed gas cylinders shall be inspected to proper securement.

48 Annually, high pressure water cylinders shall be inspected to proper securement * Compressed gas cylinders continuously in service without discharging shall be given a complete external visual inspection every 5 years or more frequently if required. The visual inspection shall be in accordance with Section 3 of CGA C-6, except that the cylinders need not be emptied or stamped while under pressure. Inspections shall be made only by competent personnel, and the results recorded on both of the following: (1) A record tag permanently attached to each cylinder (2) A suitable inspection report A These guidelines apply only to the external inspection of containers continuously in service in the water mist system and should not be confused with the DOT retest requirements for visual inspection described in 49 CFR. Proper recordkeeping is an important part of every inspection. The inspector should be guided by the following outline to ensure that the minimum information is recorded: 1. Record tag. A record tag should be attached to every container being inspected for future reference. The record tag should be marked with the date of inspection (month/year), name of individuals(s) and company performing the inspection, container serial number, condition of the container (paint, corrosion, dents, gouges, etc.), and disposition. 2. Inspection report. The following information should be recorded on an inspection report: date of inspection (month/year), name of individual(s) and company performing the inspection, DOT specification number, container serial number, date of manufacture, date of previous inspection and/or test, type of protective coating, surface condition (corrosion, dents, gouges, fire damage, etc.), and disposition (satisfactory, repaint, repair, scrap, etc.). A sample of a suitable inspection report form can be found in Appendix A of CGA C A completed copy of the inspection report shall be furnished to the owner of the system or an authorized representative. These records shall be retained by the owner for the life of the system Annually, visually inspect the cylinder for the proper specification, capacity and pressure rating The pressure in the high pressure storage containers shall be within the water mist manufacturer s specifications Unsupervised pressure in compressed gas cylinders shall be inspected monthly Supervised pressure in compressed gas cylinders shall be inspected quarterly.

49 The cylinder pressure on the discharge side of a high pressure water storage container shall be inspected annually The water level in the high pressure storage containers shall be within the water mist manufacturer s specifications Unsupervised water levels in high pressure cylinders shall be inspected quarterly Supervised water levels in high pressure cylinders shall be inspected semiannually Annually, visually inspect the vent plugs on high pressure water storage containers to ensure the vent is not ruptured or open Annually, visually inspect the filter on high pressure water storage containers to ensure it is clean Monthly, visually inspect the cylinder and control valves to confirm that they are in the proper position per the manufacturer s specification Annually, visually inspect all hoses used as a part of the system for damage Pneumatic Valves and Tubing Monthly, visually inspect all pneumatic cylinder valves for damage Quarterly, visually inspect all pneumatic tubing for damage Additive Storage Cylinders Quarterly, visually inspect the storage cylinder for external corrosion or damage Semiannually, inspect the quantity of the additive agent Water Recirculation Tanks All tank attachments and supports shall be secure in accordance with the manufacturer s requirements The water level in recirculation tanks shall be within the water mist manufacturer s specifications.

50 Unsupervised water levels in recirculation tanks shall be inspected monthly Supervised water levels in recirculation tanks shall be inspected quarterly Annually, inspect the water quality and drain, flush and refill as necessary Annually, visually inspect filters, strainers and cyclone separator and clean as necessary Pneumatically Operated Standby Pumps Monthly, visually inspect and empty the moisture trap Monthly, visually inspect the compressed gas supply and inlet air pressure in accordance with the manufacturer s specifications Monthly, visually inspect the outlet water (standby) pressure in accordance with the manufacturer s specifications Monthly, visually inspect the oil level on air regulator units in accordance with the manufacturer s specifications Water Supply Quarterly, visually inspect water supply pressure to determine that it is within the water mist manufacturer s specifications Inspect the water quality semiannually for the first year and then annually thereafter Enclosures and Interlocks. Semiannually, inspect the integrity of the enclosure and interlocks Testing Nozzles, Automatic * [NOTE: Change Annex numbering from A to A ] Where required by this section, sample automatic water mist nozzles shall be submitted to a recognized testing laboratory acceptable to the authority having jurisdiction for functional testing

51 Automatic water mist nozzles that have been in service for years shall be replaced, or representative samples shall be tested and then retested at 10 5-year intervals * Where water mist nozzles are subjected to harsh environments, including corrosive atmospheres and corrosive water supplies, they shall be either replaced or representative samples tested on a 5-year basis. A A These environments include outdoor weather conditions and portions of any area where corrosive vapors prevail. Harsh water environments include water supplies that are chemically reactive. An example of a corrosive atmosphere is a marine environment. The testing requirements for these types of environments are also described in the International Maritime Organization s Guidelines for the Maintenance and Inspection of Fire Protection Systems and Appliances, MSC.1/Circular * [NOTE: Change Annex numbering from A to A ] A representative sample of water mist nozzles for testing per or shall consist of a minimum of four water mist nozzles or 1 percent of the number of water mist nozzles per individual water mist nozzle sample, whichever is greater Where one water mist nozzle within a representative sample fails to meet the test requirement, all water mist nozzles within the area represented by that sample shall be replaced Automatic water mist nozzles that need to be replaced shall be in accordance with the requirements of Nozzles, Open Water mist nozzles installed to protect application areas without protective coverings shall be capable to operate and protect the hazard with an overspray residue in the event of a fire Where water mist nozzles are subjected to environments with residues, including corrosive atmospheres and corrosive water supplies, they shall be either replaced or representative samples tested on a 1-year basis. A See A A representative sample of water mist nozzles for testing per shall consist of a minimum of three water mist nozzles or 1 percent of the number of water mist nozzles per individual water mist nozzle sample, whichever is greater Where one water mist nozzle within a representative sample fails to meet the test requirement, all water mist nozzles within the area represented by that sample shall be replaced.

52 Strainers and Filters. Mainline strainers (basket or screen) shall be flushed until clear after each operation or flow test Additives. Samples of the additive shall be submitted in accordance with the manufacturer s recommended sampling procedures for evaluation of quality to its specification Operational Test Performance with Additives Operational tests shall be conducted to ensure the injection rate of the additive for the water mist system responds as designed, both automatically and manually The test procedures shall simulate anticipated emergency events so the response of the water mist system can be evaluated Where a discharge from the system discharge devices would create a hazardous condition or conflict with local requirements, an approved alternate method to achieve full flow conditions shall be permitted It shall be permissible to test the full flow discharge from the water mist system with additive using water only in lieu of the additive Response Time. Under Test conditions, the automatic fire detection systems, when exposed to a test source, shall operate within the requirements of NFPA 72 for the type of detector provided, and the response time shall be recorded Discharge Time. The time lapse between operation of detection systems and water delivery time to the protected area shall be recorded for open discharge devices Compressed Gas Storage Cylinders Gas cylinders designed in accordance with U.S. Department of Transportation (DOT), Canadian Transport Commission (CTC), or similar containers shall not be recharged without retesting if more than 5 years have elapsed since the date of last test A completed copy of the test report shall be furnished to the owner of the system or an authorized representative. These records shall be retained by the owner for the life of the system Control Equipment Operational tests shall be conducted to ensure the control equipment for the water mist system responds as designed, both automatically and manually Conduct annual operational testing in accordance with the requirements of NFPA 72.

53 Where a discharge from the system discharge devices would create a hazardous condition or conflict with local requirements, an approved alternate method to achieve full flow conditions shall be permitted Detection Systems Operational tests shall be conducted to ensure the control equipment for the water mist system responds as designed, both automatically and manually Conduct annual operational testing of the initiating devices for detection in accordance with the requirements of NFPA Response Time. Under Test conditions, the automatic fire detection systems, when exposed to a test source, shall operate within the requirements of NFPA 72 for the type of detector provided, and the response time shall be recorded Discharge Time. The time lapse between operation of detection systems and water delivery time to the protected area shall be recorded for open discharge devices Fire Pumps and Drivers Fire pumps shall be tested in accordance with the requirements of High pressure diesel and electric main pressure fire pumps shall be tested weekly or as permitted by an approved risk analysis in accordance with the manufacturer s requirements Water mist systems that are powered by or operated by pressurized gas (normally air or nitrogen) cylinders or pressure vessels shall be tested quarterly or determined by an approved risk analysis in accordance with the manufacturer s specifications using pressurized gas and water from either the primary cylinders or pressure vessels and/or tanks or by using temporary/test cylinders or tanks to verify nozzle flows (no blockage, fully developed spray pattern) upon operation Hoses All hose shall be tested every 5 years All hose shall be tested at times the maximum container pressure at 130 F (54.4 C). The testing procedure shall be as follows: (1) The hose is removed from any attachment. (2) The hose assembly is then placed in a protective enclosure designed to permit visual observation of the test. (3) The hose must be completely filled with water before testing.

54 (4) Pressure then is applied at a rate-of-pressure rise to reach the test pressure within 1 minute. The test pressure is then maintained for 1 full minute. Observations are then made to note any distortion or leakage. (5) If the test pressure has not dropped or if the couplings have not moved, the pressure is released. The hose assembly is considered to have passed the hydrostatic test if no permanent distortion has taken place. (6) Hose assembly passing the test must be completely dried internally. If heat is used for drying, the temperature must not exceed the manufacturer s specifications. (7) Hose assemblies failing a hydrostatic test must be marked and destroyed and be replaced with new assemblies. (8) Each hose assembly passing the hydrostatic test is marked to show the date of test Interlocks Conduct annual testing to confirm the operation of the interlock for ventilation, if required Conduct annual testing to confirm the operation of the interlock for fuel or lubrication systems, if required Pneumatic Valves Operational tests shall be conducted to ensure the pneumatic valves for the water mist system respond as designed, both automatically and manually Conduct semiannual testing of the pneumatic valves for operation in accordance with the manufacturer s instructions: (1) Slave valves (2) Valves intended to cycle on-off Reset all pneumatic cylinder release valves after testing Pneumatic Valve Solenoid Releases Operational tests shall be conducted to ensure the pneumatic valve solenoid releases for the water mist system responds as designed, both automatically and manually Conduct annual testing of the pneumatic solenoid valve releases for operation in accordance with the manufacturer s instructions: (1) Electric release

55 (2) Manual release Pneumatically Operated Standby Pumps Pumps (booster pumps, jockey pumps or transfer pumps) used in the water mist system which are not main pressure pumps shall be operated to demonstrate support of their design function for the main pressure pumps Standby pumps shall be operated at least annually to demonstrate their system flow support when the main pressure pumps are tested System control valves. Each control valve for a zone of protection by the water mist system shall be operated annually through its full range and returned to its normal position Water Mist System. Water mist systems shall be operated annually in accordance with the manufacturer s instructions * Test Preparation. Precautions shall be taken to prevent damage to property during the test. A See A Operational Test Performance. Operational tests shall be conducted to ensure the water mist system responds as designed, both automatically and manually Where the nature of the protected property is such that water cannot be discharged into the occupancy or onto the hazard, an operational test shall be conducted from a test connection with an orifice equivalent to the friction loss for the total number of nozzles * Response Time. A Test methods are as follows: 1. Some detection circuits can be permitted to be deliberately desensitized in order to override unusual ambient conditions. In such cases, the response required in can be permitted to be exceeded. 2. Testing of integrating tubing systems can be permitted to be related to this test by means of a standard pressure impulse test specified by the listing laboratory. One method of testing heat detection uses a radiant heat surface at a temperature of 300 F (149 C) and a capacity of 350 watts at a distance of 1 in. (25 mm) but not more than 2 in. (50 mm) from the nearest part of the detector. This method of testing with an electric test set should not be used in hazardous locations. Other test methods can be permitted to be employed, but the results should be obtained under these conditions.

56 Under test conditions, the detection systems, shall operate with the specifications from the Acceptance Test and These response times shall be recorded Discharge Time. The time lapse between operation of detection systems and water delivery time to the protected area shall be recorded * Discharge Patterns. A Water mist nozzles can be of different sizes and types. Some may be more susceptible to internal obstructions than others * The water discharge patterns from all of the open water mist nozzles shall be observed to ensure that patterns are not impeded by plugged nozzles, to ensure that nozzles are correctly positioned, and to ensure that obstructions do not prevent discharge patterns from fully developing. A * See Where the nature of the protected property is such that water cannot be discharged, the nozzles shall be inspected for proper orientation and the system tested with air to ensure that the nozzles are not obstructed Where obstructions occur, the piping and nozzles shall be cleaned and the system retested Pressure Readings Pressure readings shall be recorded at the hydraulically most remote nozzle or test connection to ensure the water flow has not been impeded by partially closed valves or by plugged strainers or piping For water mist systems with a deluge valve, a second pressure reading shall be recorded at the deluge valve to ensure the water supply is adequate Readings shall be compared to the hydraulic design pressures to ensure the original system design requirements are met and the water supply is adequate to meet the design requirements Where the hydraulically most remote nozzle is inaccessible, nozzles shall be permitted to be checked visually without taking a pressure reading on the most remote nozzle Where the reading taken at the riser indicates that the water supply has deteriorated, a gauge shall be placed on the hydraulically most remote nozzle and the results compared with the required design pressure Multiple Systems. The maximum number of systems expected to operate in case of fire shall be tested simultaneously to inspect the adequacy of the water supply.

57 Return to Service. After the full flow test, the water mist system shall be returned to service in accordance with the manufacturer s instructions Water Recirculation Tanks Operational tests shall be conducted to ensure water recirculation tanks for the water mist system responds as designed, both automatically and manually. (10.3.3) Conduct annual testing for operation in accordance with the manufacturer s instructions: (1) Float operated valves (2) Backflow prevention device, when present Pressure reading shall be recorded at the outlet of the recirculation tank during the operational discharge test of the water mist system Water Storage Cylinders (High Pressure) Water cylinders used with high pressure for power to deliver the water mist, or those that become pressurized at activation or water delivery or as the water source for a water mist system shall be tested in accordance with applicable current pressure vessel standard or code. A A source for test requirements is the most current FSSA Cylinder Service Guide. This is the same requirements that are applicable to cylinders, pressure tanks or pressure vessels used for pressurized gas agents Water cylinders design in accordance with U.S. Department of Transportation (DOT), Canadian Transport Commission (CTC), or similar containers shall not be recharged without retesting if more than 5 years have elapsed since the date of last test A completed copy of the test report shall be furnished to the owner of the system or an authorized representative. These records shall be retained by the owner for the life of the system Water Storage Tanks. Water storage tanks or cylinders shall be tested in accordance with the requirements of Water Supply. Conduct annual testing in accordance with 7.3 to verify the source: (1) pressure (2) flow (3) quantity (4) duration Maintenance.

58 General Maintenance shall be performed to keep the system equipment operable or to make repairs Where required by the manufacturer, maintenance shall be performed on devices not described in this standard As-built system installation drawings, original acceptance test records, and device manufacturer's maintenance bulletins shall be retained to assist in the proper care of the system and its components Replacement components shall be in accordance with the manufacturer's specifications and the original system design Spare components shall be accessible and shall be stored in a manner to prevent damage or contamination * After each system operation, a representative sample of operated water mist nozzles in the activated zone shall be inspected After each system operation due to fire, the system filters and strainers shall be cleaned or replaced Annually, a water tank used to supply a water mist system shall be drained and refilled Annually, a water mist system with open nozzles shall be flushed Other maintenance intervals shall be permitted depending on the results of the visual inspection and operating tests. Table Maintenance Frequencies Item Activity Frequency Water tank Drain and refill Annually System Flushing Annually Strainers and filters Clean or replace as required After system operation Water Mist Nozzles * Replacement water mist nozzles shall have the proper characteristics for the application intended, including the nozzle model and temperature rating Only new water mist nozzles shall be used to replace existing water mist nozzles *

59 A supply of spare water mist nozzles (never fewer than three) shall be maintained on the premises so that any water mist nozzles that have operated or been damaged in any way can be promptly replaced The water mist nozzles shall correspond to the manufacturer(s), models, and temperature ratings of the water mist nozzles in the property The automatic water mist nozzles shall be kept in a cabinet located where the temperature will at no time exceed 100 F (38 C) The stock of spare thermally activated nozzles shall include all types and ratings installed and shall be as follows: (1) For systems having fewer than 50 nozzles, not fewer than 3 nozzles (2) For systems having 50 to 300 nozzles, not fewer than 6 nozzles (3) For systems having 301 to 1000 nozzles, not fewer than 12 nozzles (4) For systems having over 1000 nozzles, not fewer than 24 nozzles * Where required by the manufacturer, a special water mist nozzle wrench shall be provided and kept in the cabinet to be used for the removal and installation of nozzles One water mist nozzle wrench shall be provided for each type of nozzle installed Protective Coverings Water mist nozzles protecting spray areas and mixing rooms in resin application areas installed with protective coverings shall continue to be protected against overspray residue so that they will operate in the event of fire * Water mist nozzles installed as described in shall be protected using cellophane bags having a thickness of in. (0.076 mm) or less or thin paper bags Coverings shall be replaced periodically so that heavy deposits of residue do not accumulate Water mist nozzles shall not be altered in any respect or have any type of ornamentation, paint, or coatings applied after shipment from the manufacturer Automatic water mist nozzles used for protecting commercial-type cooking equipment and ventilating systems shall be replaced annually Where automatic water mist nozzles are used and annual examination shows no buildup of grease or other material on the nozzles, the nozzles shall not be required to be replaced.

60 Pneumatically Operated Standby Pumps. Pneumatically operated standby pumps shall be rebuilt every five years or as specified by the manufacturer Training All persons who might be expected to inspect, test, maintain, or operate water mist systems shall be trained thoroughly in the functions they are expected to perform Refresher training shall be provided as recommended by the manufacturer or by the authority having jurisdiction.

61 E MARITIME SAFETY COMMITTEE 94th session Agenda item 20 MSC 94/20/2 12 September 2014 Original: ENGLISH ANY OTHER BUSINESS In-service testing of automatic sprinkler systems on passenger ships findings and proposed actions required to assure effective operation in emergency situations Submitted by the Bahamas SUMMARY Executive summary: This document updates the Committee on findings from the testing programme on automatic sprinkler systems on passenger ships implemented by the Bahamas and proposes urgent action to address the findings Strategic direction: 5.1 High-level action: Planned output: No related provisions Action to be taken: Paragraph 20 Related documents: MSC 92/INF.10 and SEE 1/21, paragraph Introduction 1 At MSC 92 the Bahamas introduced document MSC.92/INF.10, bringing to the attention of the Committee the Bahamas' concerns regarding failures of sprinklers to operate during testing on board ships in service. MSC 92 referred the document to SSE 1 for consideration. 2 SSE 1 noted the content of document MSC.92/INF.10 without taking any actions. This document updates the Committee on the progress of the testing of automatic sprinkler systems (here and after systems) on Bahamian flagged ships and current findings as of August 2014 and proposes urgent action. Background 3 The Committee will recall that the Revised Guidelines for the maintenance and inspection of fire protection systems and appliances (MSC.1/Circ.1432) contained enhanced guidance including paragraph relating to annual operational testing of sprinkler heads to "test a minimum of two automatic sprinklers or automatic water mist nozzles for proper operation". I:\MSC\94\20-2.doc