NFPA 25 AMD-2017 en Standard for the Inspection Testing and Maintenance of Water-Based Fire Protection Systems.pdf

1、NFPA 25 2017 Edition Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems TIA Log No.: 1287 Reference: Various sections Comment Closing Date: October 19, 2017 Submitter: Tracey Bellamy, Telgian Corporation 1. Add NFPA 70E, Standard for Electrical Safety in the

2、 Workplace, 2015 edition to section 2.2. 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 provisio

3、ns of NFPA 70E shall be applied. A.4.9.6 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

4、pumps. Where equipment connected to those 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 re

5、quired category of personal protective 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

6、 by utilization of the PPE Category Method 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,

7、 Table 130.7(C)(15)(A)(b). See also NFPA 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 haza

8、rds associated with the installation. 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

9、 Electrical connections 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. 8.1.1.2.4 Printed circuit boards (PCBs) shall be checked annually for corrosion to the extent that such wo

10、rk can be completed without opening an 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 Pl

11、umbing parts, both inside and outside 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

12、.16 All controls and power wiring connections 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 a

13、nd replaced or recalibrated when more 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 Mainte

14、nance Item Frequency Reference Inspection Alignment Annually 8.3.6.4Cable/wire insulation Annually 8.1.1.2.5Diesel 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 hose

15、s and connections Annually 8.1.1.2.11 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

16、 Annually 8.1.1.2.1 Steam pump system Weekly 8.2.2(5) Suction screens Annually 8.3.3.712 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

17、fire pump Weekly/monthly 8.3.1.2Electronic 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 hou

18、seroom environmental conditions 8.3.6.3 Item Frequency Reference 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 8.1.1.2.15Circulating water filter Annually 8.

19、1.1.2.20Control and power wiring 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 connect

20、ions Annually 8.1.1.2.2 Engine lubricating oil Annually or 50 operating hours 8.1.1.2.17 Engine oil filter Annually or 50 operating hours 8.1.1.2.18 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 sensor

21、s Annually 8.1.1.2.21Pump 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 Calibr

22、ate pressure 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 on

23、ly where 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 i

24、s idle: (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 i

25、s available 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,

26、 and renumber 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 adj

27、usted 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

28、.3.3.2.21.2 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

29、: (2) 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 press

30、ures and 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

31、 at peak 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 t

32、he controller (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 weari

33、ng appropriate 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

34、 alternative 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 r

35、equirements 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 fir

36、e pumps 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 Whe

37、re the 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 varyi

38、ng voltage 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 prod

39、uct of 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 m

40、otor within 5 percent below or 10 percent above the rated (i.e., nameplate) voltage shall be considered acceptable. Substantiation: Item 2: The proposed change to the body of the standard sets a minimum requirement to utilize the provisions of NFPA 70E as a baseline for protective measures required

41、when working on electric controllers for motordriven fire pumps. The additional language added to the Annex provides reinforcing directive that every electric motordriven fire pump controller installation is different and that the calculation of incident energy, the resultant labeling and the requir

42、ed PPE for such will be different for each. Item 3: The proposed changes to the body of the standard provides exception to requirements to activities that require access to an energized electric fire pump controller based on safety concerns with completing such. Additionally, Section 8.1.1.2.12 was

43、correct to match the required annual frequency as included in Table 8.1.1.2. Item 4: The referenced sections of the Table have been corrected as needed and additional references added for completeness. Item 5: The provisions of the recommended Table have been modified to eliminate requirements to ti

44、ghten electrical connections and check accuracy of voltmeters/ammeters installed on electric fire pump controllers. Items 6: The proposed change limits the need to take voltage and amperage readings to those conditions where the readings can be taken without opening the electric fire pump controller

45、. Additionally, reading on the event log are limited to conditions where such work can be completed without opening and energized electric fire pump controller. Item 7: With the removal of a requirement to take voltage and amperage readings as included in this TIA, the need for the use of calibrated

46、 equipment is eliminated. Items 8: The proposed change limits the need to take voltage and amperage readings to those conditions where the readings can be taken without opening the electric fire pump controller. Additionally, reading on the event log are limited to conditions where such work can be

47、completed without opening and energized electric fire pump controller. Item 9: The proposed change limits the taking of voltage and amperage readings to those conditions where an external means is provided on the electric fire pump controller. Item 10: The change provides that the alarm sensors that

48、 require access to an energized electric fire pump controller are to be checked at an alternate location outside the controller. Item 11: The proposed change to the body of the standard sets a minimum requirement to utilize the provisions of NFPA 70E as a baseline for protective measures required wh

49、en working on electric controllers for motordriven fire pumps. The additional language added to the Annex A.4.9.6 provides reinforcing directive that every electric motordriven fire pump controller installation is different and that the calculation of incident energy, the resultant labeling and the required PPE for such will be different for each and is referenced here for clarity. Item 12: Language is added to indicate that voltage and amperage readings are only taken where an external means is provided on the electric fire pump controller to