1、 Tentative Interim Amendment NFPA25 Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems 2017 Edition Reference: Various TIA 17-2 (SC 17-12-1 / TIA Log #1287) Pursuant to Section 5 of the NFPA Regulations Governing the Development of NFPA Standards, the Nation
2、al Fire Protection Association has issued the following Tentative Interim Amendment to NFPA 25, Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, 2017 edition. The TIA was processed by the Technical Committee on Inspection, Testing, and Maintenance of Wate
3、r-Based Systems, and was issued by the Standards Council on December 6, 2017, with an effective date of December 26, 2017. A Tentative Interim Amendment is tentative because it has not been processed through the entire standards-making procedures. It is interim because it is effective only between e
4、ditions of the standard. A TIA automatically becomes a public input of the proponent for the next edition of the standard; as such, it then is subject to all of the procedures of the standards-making process. 1. Add NFPA 70E, Standard for Electrical Safety in the Workplace, 2015 edition to section 2
5、.2. 2. Revise 4.9.6 and associated Annex A material to read as follows: 4.9.6* Electrical Safety. 4.9.6.1 Legally required precautions shall be taken when testing and maintaining electric controllers for motor-driven fire pumps. 4.9.6.2 At a minimum, the provisions of NFPA 70E shall be applied. A.4.
6、9.6 WARNING: NFPA 20 includes electrical requirements that discourage the installation of a disconnect means and limit overcurrent protection in the power supply to electric motordriven fire pumps. This is intended to ensure the availability of power to the fire pumps. Where equipment connected to t
7、hose circuits is serviced or maintained, the service person could be subject to unusual exposure to electrical and other hazards. It could be necessary to establish special safe work practices and to use safeguards or personal protective clothing, or both. The required category of personal protectiv
8、e equipment will vary dependent upon the specific installation details and associated incident energy levels. The determination of such incident energy levels can be established by conducting an incident energy level analysis as provided in Annex D of NFPA 70E or by utilization of the PPE Category M
9、ethod provided by NFPA 70E, Table 130.7(C)(15)(A)(b), where applicable. Use of the PPE Category Method requires that the maximum available short-circuit current and maximum fault clearing time for the actual installation do not exceed those indicated in NFPA 70E, Table 130.7(C)(15)(A)(b). See also N
10、FPA 70E for additional safety guidance regarding the determination of the incident energy and the required level of personal protective equipment. The provisions of NFPA 70E require that the owner label the equipment with information regarding the electrical hazards associated with the installation.
11、 Where such labeling is not present, the technician cannot make a determination for safe work practice on the equipment without further assessment of the incident energy associated with the installation. 3. Revise sections in 8.1.1.2 to read as follows: 8.1.1.2.2 Electrical connections shall be chec
12、ked annually and repaired as necessary to the extent that such work can be completed without opening an energized electric motordriven fire pump controller. 8.1.1.2.4 Printed circuit boards (PCBs) shall be checked annually for corrosion to the extent that such work can be completed without opening a
13、n energized electric motordriven fire pump controller. 8.1.1.2.5 Cable and/or wire insulation shall be checked annually for cracking to the extent that such work can be completed without opening an energized electric motordriven fire pump controller. 8.1.1.2.6 Plumbing parts, both inside and outside
14、 of electrical panels, shall be checked annually for any leaks to the extent that such work can be completed without opening an energized electric motordriven fire pump controller. 8.1.1.2.12 Engine crankcase breathers shall be checked quarterly annually. 8.1.1.2.16 All controls and power wiring con
15、nections shall be checked annually and repaired as necessary to the extent that such work can be completed without opening an energized electric motordriven fire pump controller. 8.1.1.2.21 The accuracy of pressure gauges and sensors shall be inspected annually and replaced or recalibrated when more
16、 than 5 percent out of calibration to the extent that such work can be completed without opening an energized electric motordriven fire pump controller. 4. Revise Table 8.1.1.2 to read as follows: Table 8.1.1.2 Summary of Fire Pump Inspection, Testing, and Maintenance Item Frequency Reference Inspec
17、tion Alignment Annually 8.3.6.4 Cable/wire insulation Annually 8.1.1.2.5 Diesel pump system Weekly 8.2.2(4) Electric pump system Weekly 8.2.2(3) Engine crankcase breather Annually 8.1.1.2.12 Exhaust system and drain condensate trap Annually 8.1.1.2.13 Flexible hoses and connections Annually 8.1.1.2.
18、11 Fuel tank vents and overflow Annually 8.1.1.2.10 Plumbing parts inside and outside of panels Annually 8.1.1.2.6 Printed circuit board corrosion (PCBs) Annually 8.1.1.2.4 Pump Weekly 8.2.2(2) Pump house/room Weekly 8.2.2(1) Shaft movement or endplay while running Annually 8.1.1.2.1 Steam pump syst
19、em Weekly 8.2.2(5) Suction screens Annually 8.3.3.712 Item Frequency Reference Test Automatic transfer switch and emergency/standby generators Per NFPA 110 8.3.6.1 and 8.3.6.2 Diesel enginedriven fire pump Weekly 8.3.1.1 Diesel fuel testing Annually/Semiannually 8.3.4 Electric motordriven fire pump
20、Weekly/monthly 8.3.1.2 Electronic control module (ECM) Annually 8.3.3.13 Fire pump alarm signals Annually 8.3.3.510 Fuel tank, float switch, and supervisory signal for interstitial space Quarterly 8.1.1.2.7 Main relief valve Annually 8.3.3.38 Power transfer switch Annually 8.3.3.49 Pump houseroom en
21、vironmental conditions 8.3.6.3 Pump operation (no flow) Weekly/monthly 8.3.1 Pump performance (flow) Annually 8.3.3 Supervisory signal for high cooling water temperature Annually 8.1.1.2.8 Maintenance Batteries Annually 8.1.1.2.15 Circulating water filter Annually 8.1.1.2.20 Control and power wiring
22、 connections Annually 8.1.1.2 16 Controller Per manufacturer 8.5 Diesel active fuel maintenance system Annually or per manufacturer recommendation 8.3.4.3 Diesel engine system Per manufacturer 8.5 Electric motor and power system Per manufacturer 8.5 Electrical connections Annually 8.1.1.2.2 Engine l
23、ubricating oil Annually or 50 operating hours 8.1.1.2.17 Engine oil filter Annually or 50 operating hours 8.1.1.2.18 Item Frequency Reference Fuel tank check for water and foreign materials Annually 8.1.1.2.9 Measure back pressure on engine turbo Annually 8.1.1.2.14 Pressure gauges and sensors Annua
24、lly 8.1.1.2.21 Pump and motor bearings and coupling Annually or as required 8.51.1.2.3 Sacrificial anode Annually 8.1.1.2.19 5. Revise the Electrical System section of Table A.8.1.1.2 for the following line items to read as follows: Tighten electrical connections as necessary X Annually Calibrate pr
25、essure switch settings* X Annually Voltmeter and ammeter for accuracy (5%) X Annually Any corrosion on printed circuit boards (PCBs)*X Annually Any cracked cable/wire insulation* X Annually Any leaks in plumbing parts* X Annually Any signs of water on electrical parts* X Annually * Required only whe
26、re the extent of such work can be completed without the opening of an energized electric motordriven fire pump controller. 6. Revise 8.3.2.8(2) to read as follows: 8.3.2.8 The pertinent visual observations or adjustments specified in the following checklists shall be conducted while the pump is idle
27、: (1) Record the system suction and discharge pressure gauge readings. (2) For pumps that use electronic pressure sensors to control the fire pump operation, record the current pressure and the highest and the lowest pressure shown on the fire pump controller event log where such information is avai
28、lable without having to open an energized electric motordriven fire pump controller. (3) If the highest or lowest pressure is outside of the expected range, record all information from the event log that helps identify the abnormality. 7. Delete 8.3.3.2.1 in its entirety, and revise 8.3.3.2.2, and r
29、enumber subsequent paragraphs to read as follows: 8.3.3.2.1 Voltage and amperage readings on fire pump controllers that meet the following criteria shall be permitted in lieu of calibrated voltage and / or amperage meters: (1) The fire pump controller shall have been factory calibrated and adjusted
30、to 3 percent. (2) The voltage reading shall be within 5 percent of the rated voltage. 8.3.3.2.21 Except as permitted in 8.3.3.2.1, cCalibrated test equipment shall be provided to determine net pump pressures, rate of flow through the pump, volts and ampere, and speed. 8.3.3.2.21.1 Calibrated 8.3.3.2
31、.21.2 Gauges 8.3.3.2.21.3 Flow 8. Revise 8.3.3.7(2)(a) to read as follows: 8.3.3.7 The pertinent visual observations, measurements, and adjustments specified in the following checklists shall be conducted annually while the pump is running and flowing water under the specified output condition: (2)
32、At each flow condition, the procedure is as follows: (a) Where an external means is provided on the controller, rRecord the electric motor voltage and current (all lines). (b) Record the pump speed in rpm. (c) Record the simultaneous (approximately) readings of pump suction and discharge pressures a
33、nd pump discharge flow. 9. Revise 8.3.3.9(3) to read as follows: 8.3.3.9 For installations having an automatic transfer switch, the following test shall be performed to ensure that the overcurrent protective devices (i.e., fuses or circuit breakers) do not open: (3) While the pump is operating at pe
34、ak load and alternate power, record the following to voltage, amperage, rpm, suction pressure, discharge pressure, and flow rate and include in the pump test results: (a) The voltage where an external means is provided on the controller (b) The amperage where an external means is provided on the con
35、troller (c) The rpm (d) Suction pressure (e) Discharge pressure 10. Revise 8.3.3.10.1 and add new Annex A material to read as follows: 8.3.3.10.1* Alarm conditions that require the controller to be opened in order to create or simulate the condition shall be tested by qualified personnel wearing app
36、ropriate protective equipment. Alarm sensors located within electric motordriven fire pump controllers that cannot be accessed without opening an energized electric motordriven fire pump controller shall be tested at an alternative location outside of the controller. A.8.3.3.10.1 Testing at an alter
37、native location can include completion of a test at an external fire alarm monitor module used to monitor the sensors within the fire pump controller. 11. Revise 8.3.3.11 and associated Annex A material to read as follows: 8.3.3.11* Safety. 8.3.3.11.1 Section 4.9 shall be followed for safety require
38、ments while working near electric motordriven fire pumps. 8.3.3.11.2 At a minimum, the provisions of NFPA 70E shall be applied. A.8.3.3.11 See also NFPA 70E for additional safety guidance A.4.9.6. 12. Revise 8.3.7.2.5 through 8.3.7.2.9 to read as follows: 8.3.7.2.5 For electric motordriven fire pump
39、s operating at constant speed with an external means for reading the voltage and amperage on the controller, the current at each flow rate test point and at each phase shall not exceed the product of the electric motor service factor and the fullload amperage rating of the motor. 8.3.7.2.6 Where the
40、 measured current at each flow rate test point and at each phase exceeds the product of the electric motor service factor and the fullload amperage rating of the motor, the source of the problem shall be identified and corrected. 8.3.7.2.7 For electric motordriven fire pumps operating at varying vol
41、tage with an external means for reading the voltage and amperage on the controller, the product of the test voltage and the current at each test point and on each phase shall not exceed the product of the voltage and the fullload current times the motor service factor. 8.3.7.2.8 Where the product of
42、 the measured test voltage and the measured current at each test point and at each phase exceeds the product of the voltage and the fullload current times the motor service factor, the source of the problem shall be identified and corrected. 8.3.7.2.9 Where measured, vVoltage readings at the motor w
43、ithin 5 percent below or 10 percent above the rated (i.e., nameplate) voltage shall be considered acceptable. Issue Date: December 6, 2017 Effective Date: December 26, 2017 (Note: For further information on NFPA Codes and Standards, please see www.nfpa.org/docinfo) Copyright 2017 All Rights Reserved NATIONAL FIRE PROTECTION ASSOCIATION
