FSD

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noel1624
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260597
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FSD
Updated:
2014-02-19 11:28:00
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fire safety
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Description:
Study for Fire Safety Directer Certificate of Fitness (NYC)
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  1. Who must the Building Impairment Coordinator notify of impairment conditions?
    • Central Station.
    • Borough dispatcher.
    • Insurance carrier.
    • Occupants of affected area.

    Out of service tags must be placed at appropriate locations (fire department connections, system control valves, FCS, etc)
  2. How often must auto-initiating fire alarm devices be tested?
    Monthly.
  3. How often must PA systems be tested?
    Every 6 months.
  4. How often must fire drills be conducted in office buildings?
    Every 3 months for the first 2 years, and then every 6 months thereafter.
  5. How often must fire extinguishers be inspected?
    Annually.
  6. How often must fire drills be conducted in hotels?
    Every 3 months, on each shift.
  7. How often must fire extinguishers be hydrostatically tested?
    Every 5 years.
  8. How often must fire extinguishers be "quick checked"?
    Monthly.
  9. How many fire extinguishers must be placed in office buildings? Where?
    At least one per floor, in a conspicuous and easily accessible location. A fire extinguisher must be reachable within a walking distance of no more than 75'. They must be at least 4" off the floor, and the maximum height will depend on the weight of the extinguisher.
  10. The FSD should report all major defects to whom?
    • Building owner.
    • Local fire house.
    • FD Bureau of Fire Prevention.
  11. What 6 items must be stored at the Fire Command Station in an office building? (not including log books)
    • Fire Safety Plan
    • Standpipe/Sprinkler layout
    • Elevator keys (6 copies of #2642)
    • Floor plans
    • Window keys (12 copies)
    • Master keys of all doors
  12. What information must be recorded in the smoke detector log book?
    • Total number of smoke detectors and their locations.
    • Details of semi-annual cleaning.
    • Records of annual sensitivity tests.
    • Results of all tests.
    • Names of persons or company performing inspections and tests.
    • Dates of tests, inspections, and maintenance.
    • Records of installations, repairs, and any signals transmitted.
  13. Name 4 automatic sources of water supply for sprinkler systems.
    • Gravity tank
    • Pressure tank
    • Automatic fire pump
    • Direct connection to the public water system
  14. What color must the entire siamese connection be for non-automatic sprinkler systems?
    Aluminum
  15. What color paint is used on siamese connection caps for automatic sprinkler systems?
    Green
  16. What color paint is used on siamese connection caps for standpipe systems?
    Red
  17. What color paint is used on siamese connection caps for combination standpipe/sprinkler systems?
    Yellow
  18. What pressure must be available at the top of the highest sprinkler riser, to allow direct connection to a city water main?
    15 psig (with 500 gpm of water flowing from a 2.5" hydrant outlet located at street level within 250' of the building).
  19. Direct connection of sprinklers to the public water system must have control valves located where?
    In a flush sidewalk box within 2' of the front wall of the building or street line. The location must be indicated by a sign on the building directly opposite the flush box, with a white background and 1" red letters reading "Automatic Sprinkler Shutoff Valve...Feet Opposite this Sign".
  20. If water pressure from a city main is not sufficient, booster pumps can be used. What requirements are these pumps subject to?
    • They must be of centrifugal type, capable of delivering 200 gpm and of supplying 25% of the heads in the largest area supplied at 20 gpm, at a pressure at least 25 psig at the top of the highest sprinkler riser.
    • They must be automatically controlled, with a supervisory attachment that is monitored 24/7 (direct connection to central station or fire alarm company is OK).
  21. What pressures must be used when conducting hydrostatic tests of automatic wet sprinkler systems?
    At least 100 psig at the topmost sprinkler head, for 1 hr, and at least 200 psig at the lowest cross connection to the siamese connections.
  22. What pressures must be used when conducting hydrostatic tests of automatic dry sprinkler systems?
    • At least 100 psig at the topmost sprinkler head, for 1 hr, and at least 200 psig at the lowest cross connection to the siamese connections. (Same as a wet system).
    • In addition, 40 psig for 24 hr, with pressure loss not to exceed 1.5 psig.
  23. What pressures must be used when conducting hydrostatic tests of non-automatic sprinkler systems?
    At least 50 psig at the topmost sprinkler head, with test pressure maintained for at least 1 hr.
  24. What pressures must be used when conducting hydrostatic tests of pressure tanks?
    At least 1.5 times the working pressure, for a period of 1 hr.
  25. What pressures must be used when conducting hydrostatic tests of sprinkler branches and heads supplied from domestic water?
    At least 100 psig at the topmost sprinkler head, for 1 hr, and at least 200 psig at the lowest cross connection to the siamese connections; or at the pressure of the domestic water supply, whichever is greater.
  26. Pressure tanks: What is the maximum gross capacity of a single tank?
    9000 gal
  27. Pressure tanks: What is the maximum available amount of water from pressure tanks, where there is a secondary source of water available from a gravity tank or a street connection?
    15,000 gal
  28. Pressure tanks: What is the maximum water to air ratio?
    2/3 water to 1/3 air.
  29. Pressure tanks: What is the minimum pressure that must be maintained?
    75 psig, with minimum 15 psig available at the highest line of sprinklers below the main roof when all the water is being discharged.
  30. Pressure tanks: What is the minimum size of the supply pipe?
    2"
  31. Pressure tanks: Where must they be located?
    At or above the top level of sprinklers.
  32. What pressure are sprinkler heads designed to withstand, without leakage?
    At least 500 psi
  33. At what temperature does the valve on a cycling sprinkler head open?
    165 F
  34. List the three color codes of sprinkler heads, and their respective temperature ratings.
    • Uncolored: 135-170 F
    • White: 175-225 F
    • Blue: 230-300 F
  35. What is a loaded sprinkler head?
    A sprinkler head that has a build-up of foreign material (ie, a dirty sprinkler head).
  36. How many spare sprinkler heads must be available, at minimum?
    6, with an appropriate wrench.
  37. For sprinkler systems that are connected to a public main, where is the control valve located and how is it marked?
    Between the building and the main, in a box recessed into the sidewalk or attached to a post (known as a Post Indicator Valve). A sign on the building or a nearby post indicates the location.
  38. What is an OS&Y valve?
    Outside Stem & Yoke valve. They are located just inside the building on the main riser, or outside in a protected pit. They are the main shutoff for the water supply, and others can be installed to shut off specific zones.
  39. Pressure tanks: What are the inspection/maintenance requirements?
    • Monthly inspection of water and air levels.
    • Every 3 years, the inside of the tank should be inspected.
    • Also, temperature inside the structure housing the tank should be checked daily during cold weather (it should not go below 40 F).
  40. Gravity tanks: Where should they be located?
    At least 25' above the highest line of sprinkler heads that it supplies.
  41. Gravity tanks: How often should they be checked during cold weather?
    Daily, and the water temp should not fall below 40 F.
  42. Gravity tanks: How often should water levels be checked?
    Monthly.
  43. Describe a preaction sprinkler system.
    These are for situations where there is danger of serious water damage. The pipes are dry, and the air is not under pressure. Valve preventing water from entering the system (so there is no danger from broken pipes), and will open rapidly if a fire is detected, even before sprinkler heads open.
  44. Describe a dry pipe sprinkler system.
    These are used where wet pipe systems cannot be heated to prevent freezing. The pipes are filled with air under pressure, and uses standard sprinkler heads. When sprinkler heads open, the drop in air pressure signals water flow control valves to open.
  45. Describe a deluge sprinkler system.
    This system is designed to wet down an entire area. These are used when there is danger of rapid fire spread. The sprinkler heads are always open, and water flow valves are controlled by a fire detection system.
  46. What is a jockey pump?
    A pressure maintenance pump designed to operate when a drop in pressure is detected. If it does not have the capacity to restore pressure, the fire pump is activated.
  47. What pressure must be delivered by a fire pump?
    At least 25 psi at the highest line of sprinkler heads.
  48. What is a booster pump?
    A small pump used to increase water pressure in a sprinkler system.
  49. What is the maximum length of a hoseline?
    125'
  50. What is the size of a fire department hose connection on a riser?
    2.5"
  51. What is the difference between an unnecessary and an unwarranted alarm?
    When an unnecessary alarm is transmitted, the system functioned as designed. When an unwarranted alarm is transmitted, the system malfunctioned (lack of maintenance, improper installation, improper settings, etc).
  52. How often must smoke detectors be tested and cleaned?
    • Sensitivity testing: within 1 yr after installation, and then every year thereafter.
    • Cleaning: Every 6 m.
  53. What are the placement recommendations for smoke detectors?
    • Wall placement: between 4 and 12" from the ceiling.
    • Ceiling placement: 4" from the wall.
    • Heating vents: At least 3' from a heating vent.
  54. Where is the smoke detector log book kept?
    In the engineer's office.
  55. Name and describe the classes of fire extinguishers.
    • A: Ordinary combustibles
    • B: Flammable liquids
    • C: Electrical
    • D: Flammable metals
    • K: Kitchen fires (located not more than 30' from the hazard; range hood controls must be 10-35' from the hood)
  56. When must fire extinguishers be inspected/tested/maintained?
    • Monthly "quick check" inspection (recorded on a tag or in a file)
    • Maintenance/servicing/recharge: Annually or after each use (by CoF holder)
    • Hydrostatic testing: Every 5 years
  57. A fire extinguisher weighs 40 lb or less. Where must it be placed/mounted?
    In a conspicuous location, along a normal path of travel, with the top not higher than 5' above the floor, and the bottom at least 4" above the floor.
  58. A fire extinguisher weighs more than 40 lbs. Where must it be placed/mounted?
    In a conspicuous location, along a normal path of travel, with the top not higher than 3.5' above the floor, and the bottom at least 4" above the floor.
  59. True or false: Doors to fire stairs with failsafe systems must unlock from the stair side in buildings under 100' in height.
    False (but must unlock in buildings 100' or more in height).
  60. What is a Group B building?
    • Office building designed to be occupied by more than 100 people above and below street level, or by more than 500 people in the entire building. (Fire Safety Director must be on site if these conditions apply.)
    • These must have a Fire Safety Plan, FSD, DFSD, BES; fire brigade; drills, signage on elevators, stairs, floors.
  61. What are the conditions under which a hotel/motel will be subject to the new fire code rules?
    • > 30 lodgers or sleeping rooms; OR
    • > 15 lodgers or sleeping rooms above the 1st floor; OR
    • > 75' high
  62. Name 3 classes of residential ("R") buildings.
    • R-1: hotels/motels
    • R-2: dormitories
    • R-3: rectories, convents
  63. What buildings other than group B and R must have fire safety evacuation plans?
    • Group A (academic) with < 2000 people
    • Covered malls over 50,000 sq ft total floor area
    • Buildings > 6 stories or > 75' high
    • All education facilities
    • Homeless shelters that house > 15 people for > 30 d/year.
  64. Fire Command Stations are required in buildings above what height?
    100'
  65. Fire Command Stations must be equipped with 2-way communications with what 4 areas?
    • Warden phones on each floor
    • Mechanical control center
    • Elevators and elevator machine rooms (on roof)
    • HVAC control rooms
  66. What 3 daily tests should be conducted at the Fire Command Station?
    • Visual inspection
    • Check of enunciator panel lights
    • Lamp test check
  67. New fire code requires what safety plans?
    • Fire safety and evacuation plan
    • Emergency action plan
    • Residential fire safety guide
  68. Major defects in fire protection systems must be reported to whom?
    • The local fire department (borough dispatcher, in new code)
    • The building owner
    • The Bureau of Fire Prevention
  69. What color discs will be placed on the siamese connection by the fire department if a major defect is ongoing?
    • White, if the entire building is out of service.
    • Blue, if it is partially out of service.
  70. Briefly describe the training that should be given to fire brigade members.
    Each member should be assigned a specific task, but all members should be trained to conduct all tasks.
  71. In case of a fire on a single floor, what floors should be evacuated in all cases?
    The fire floor, the floor above, and the floor below. Evacuees should be directed to at least 3 floors below.
  72. How many deputy fire wardens are needed on each floor?
    At least one per tenant. If any tenant space is greater than 7500 sq ft, an additional deputy warden is required for each space (max 7500 sq ft can be covered by a single deputy).
  73. When must a multi-zone standpipe system be under observation of a certificate of fitness holder?
    Always - continually.
  74. What are the differences between fire drills in Group B and R buildings?
    • In B, drills are conducted floor by floor, with wardens and employees participating. Drills are conducted every 3 months for 2 years, then every 6 months.
    • In R, only brigade and service employees are involved. Drills are conducted every 3 months on each shift.
  75. How long must fire drill records be kept?
    3 years.
  76. How long must EAP records be kept?
    5 years.
  77. If a sprinkler system is taken out of service, what procedures must be followed?
    • Fire department must be notified (borough dispatcher).
    • Building must be evacuated or put under a fire watch maintained by certified fire guards.
    • Insurance carrier and occupants of affected areas must be notified.
    • Building impairment coordinator is responsible for out of service systems.
  78. How many pull stations are required on each floor?
    • At least one, with no more than 200' travelling distance between stations (new rules require pull stations to be within 5' of each exit).
    • They must be located 3.5 to 5' above the floor.
    • (A diagonal white stripe indicates that it signals the central station.)
  79. When must flow tests be be conducted on sprinkers in R-2 buildings?
    Annually, unless a pressure gauge is checked during monthly sprinkler inspection (then testing only needs to be conducted every 30 months).
  80. How often must water flow devices be tested?
    Every 6 m.
  81. Does a pull station recall elevators to the designated lobby or landing?
    No (but sprinklers do).
  82. In the event of a fire alarm, briefly describe the actions that should be taken by the FSD.
    • Man the FCS and notify the fire department.
    • Send an alarm runner to await the arrival of the fire department.
    • Send fire brigade to the floor below the fire.
    • Account for elevators.
    • Direct evacuation of the fire floor and the floor above first, then other floors (floor below, and others as needed) as required.
  83. If fire brigade reports to the FSD that an unnecessary or unwarranted alarm is the cause of a signal, what should the FSD do?
    • Make appropriate announcements.
    • Clear the lobby and await the arrival of the fire department.
    • Silence the alarms.
    • Do NOT reset the panel until the fire commander instructs to do so.
  84. When standpipe hoses are used in a building, what is the general rule regarding floor area to hose length?
    Hoses can be no longer than 125', and there must be no part of the floor more than 20' from the end of a hose nozzle.
  85. At what rate should a standpipe hose deliver water?
    125 gpm (and max pressure flowing into hose is 100 psi).
  86. Fire pumps must be operated how often?
    Once every 30 d.
  87. If a minor defect to a fire protection system is found, when must the Bureau of Fire Prevention be notified in writing?
    After 30 days, but only if the defect has not been fixed by then. (Note: The defect should be fixed immediately wherever possible, but it is not necessary to notify the BFP for 30 days.)
  88. At what height does a building require a fire pump, and where must they be located?
    Fire pumps are needed in buildings taller than 300', and must be at the entrance floor or below, with access from the street.
  89. How often must commercial cooking exhaust systems be inspected and cleaned?
    Every 3 m (except vertical exhaust ducts more than 3 stories high must be inspected every 6 m). (In both cases, the work must be done under the supervision of a CoF holder.)
  90. Where must fire extinguishers be located?
    • In office buildings, no more than 75' travelling distance between sprinklers.
    • In hotels, one for every 6000 sq ft.
    • (Old rule was one extinguisher every 6000 sq ft, or one every 12,000 sq ft, if fully sprinkled.)
  91. Upon what events must elevators auto recall?
    • Elevator landing smoke detector activation.
    • Fire alarm activation (not including pull station).
    • 2642 key turn.
  92. Generators must provide at least 6 hours of power to what systems?
    • Smoke detectors.
    • At least 3 elevators (power to recall them).
    • FCS PA system.
    • Fire pumps.
  93. How often must generators be tested?
    Monthly.
  94. What buildings are exempt from the smoke shaft / stair pressurization requirement?
    Fully sprinklered buildings.
  95. When can a smoke shaft be purged?
    Only upon direction of the fire chief.
  96. Class B buildings require fire partitions for areas in excess of what square footage?
    7500 sq ft (but if the building is fully sprinklered, there is no limit).
  97. Fail safe systems must be activated upon occurrence of what events?
    • Automatic fire detection system activation.
    • Phase I elevator activation.
    • Electrical failure.

    (Manual activation from FCS must also be possible.)
  98. Describe emergency power system testing requirements.
    • Emergency power systems must be tested every 4 years for 4 hrs under running load.
    • Generator must be tested monthly for 30 min under 30% load.
    • Diesel generator must be tested monthly for 2 hrs (30 min under 25%, 30 min under 30%, 1 hr under 50% load).

    Testing must be done by a licensed electrician.
  99. How often must smoke control systems be tested?
    • Dedicated systems: every 6 m.
    • Non-dedicated systems: annually.
  100. Describe the requirements for flameproofing.
    • Must be performed by a CoF.
    • Must be done every 12 m.
    • Or owner can send affidavit and then re-file for 2 years, after which it must be re-done. (check this?)
    • If an item is laundered, it must be re-flameproofed.
  101. What areas/buildings are exempted from flameproofing requirements?
    • GOMAC
    • Guest rooms
    • Offices
    • Merchandise
    • Art
    • Churches
  102. Describe hot work standards and requirements.
    • Operator and guards must have CoF.
    • Hot work cannot be done within 35' of combustibles, or they must be properly covered.
    • Floors and wall openings must be protected.
    • 2 guards with fire suppression equipment must be on continuous duty.
    • Site must be inspected 30 min after work is done, and again 30 min later.
    • Owner must be notified 48 hrs in advance.
    • Owner must be given copy of rules.
    • Permit is good for 30 d, and valid for 1 yr.
  103. How often must EAP drills be conducted?
    • Twice in the first year after the EAP plan is accepted (the first must be conducted within 6 m).
    • Then at least once a year on every floor thereafter.
  104. Who must participate in EAP drills?
    All occupants (including visitors).
  105. What clearance is needed under a sprinkler head?
    18"
  106. When a fire alarm system is out of service, what information must be communicated to the fire department?
    • Description of condition.
    • Type of occupancy.
    • Estimated time the condition will remain.
    • FSD contact information.
    • Area of building affected.
  107. In Class B buildings, doors opening into an interior stair enclosure may be locked on the stair side of the door. At intervals of how many floors must it be possible to gain entry without a key?
    4 stories or less.
  108. Manual pull stations should be tested by the CoF holder how often?
    Monthly.
  109. Supervisory devices should be tested when?
    Quarterly.
  110. FSP staff training follows what schedule?
    • Group B: 1 hour annually
    • Group R-1: 1 hour quarterly on each shift

    Record of training must be kept in a bound log book for 3 years.
  111. EAP staff training follows what schedule (initial training and refresher training)?
    • INITIAL TRAINING:
    • - deputies: 3 hrs
    • - BES: 3 hrs
    • - wardens, deputy wardens, brigade: 2 hrs

    • REFRESHER TRAINING:
    • - deputies: 1 hr every 6 m
    • - BES: 1 hr every 6 m
    • - wardens, deputy wardens, brigade: 1 hr/yr
  112. How often must sprinkler systems be inspected?
    Monthly (by Cof).
  113. Does a building need to employ people who are instructed in the maintenance of sprinkler systems?
    Yes. One or more employees must be instructed in sprinkler system maintenance.
  114. Unplanned out of service conditions shall be handled how?
    The CoF or impairment coordinator must immediately notify the building owner and the FDNY dispatcher.
  115. What are the tag colors used to indicate impairment of fire safety systems?
    • System fully out of service: Red tag / white disk.
    • System partially out of service: Orange tag / blue disk.
    • System defects or deficiencies: Yellow tag
    • No defects: Green tag.
  116. What is the size of the disk attached to fire department connections to indicate impairment?
    8 - 9"
  117. What information must be placed on tags indicating impairment of a fire safety system, and where must the tags be placed?
    • Fully out of service: Red tag at main control valve.
    • Partially out of service: Orange tag at main control valve and at any closed sectional valve.
    • All tags must indicate company name, date of removal from service, and anticipated date of return to service.
  118. Name 3 types of signals initiated by a fire alarm control panel.
    • Alarm signal:  triggered by alarm pull station, automatic fire detector, smoke detector, water flow switch, etc - signal is sent to central station.
    • Supervisory signal: indicates that a monitored system or device is in an abnormal state - signal may be sent to the central station.
    • Trouble signal: indicates that there is a fault in a monitored circuit or component - signal may not be sent to central station.
  119. How many phone lines must connect a central station transmitter to the fire department?
    Two (primary and secondary lines).
  120. How often should manual pull stations be tested?
    Monthly, where practical.
  121. When an alarm system is taken off line, what info must be recorded in the log book?
    • Time the system was taken off line.
    • Reason the system was taken off line.
    • Name and number of the person notified at the central station.
    • Time the system was restored to service.
  122. What information must be recorded in the log book when an alarm activates?
    • Date and time of activation.
    • Type and location of device that was activated.
    • Probable cause.
    • FDNY unit and officer responding.
  123. What fire department notifications are required for out of service conditions?
    • Planned: No notification required if system will be returned to service within 8 hours, and when all other fire protection systems are fully operational.
    • Unplanned major: Cof, impairment coordinator, or other person responsible for maintenance/inspection/supervision of the system shall immediately report to the building owner and to the borough dispatcher.
    • Minor: If there is no safety hazard, the CoF must report to the owner and correct immediately. If not corrected within 30 d, impairment coordinator must report in writing to the fire department.
  124. Describe the 3 classes of standpipe systems.
    • Class I: For use by professional fire fighters and specially trained personnel. The hoses are 2.5" in diameter.
    • Class II: For use by occupants. The hose is 1.5" in diameter.
    • Class III: For use by either professionals or occupants. The hosing can be adjusted from 1.5-2.5" by attaching reducing valves.
  125. In dry standpipe systems utilizing accelerators and exhausters to quickly allow water into the pipes, what change in air pressure will activate those devices?
    A drop of 2 psi.
  126. A 3-way manifold above the main roof level, at the top of the highest riser, must have its hose outlets set how far above roof level?
    18 to 60"
  127. At fire department connections, pressure restricting devices must be installed at each hose outlet where the pressure exceeds what reading?
    80 psi
  128. Hose racks should be placed at what height?
    5-6' above the floor/landing.
  129. Standpipe hose cabinets must be marked with white letters no less than 2" high on a red background. What are the exceptions?
    Cabinets that have doors with a clear glass panel do not need to be marked.
  130. Should the FSD recall elevator cars when a manual pull station is activated?
    Yes. (Elevators will not be recalled automatically when a manual pull station is activated, so FSD must recall them with the 2642 key.)
  131. Smoke shafts are required in what buildings?
    In office buildings > 100' in height, in which air handlers serve more than the floor on which they are located. 

    Exception: If all interior stairs (other than fire tower or access stairs) are pressurized, a smoke shaft is not required.
  132. Name and define different types of loads.
    • Dead load: Weight of building materials and any parts of the building that are permanently attached.
    • Fire load: All the parts or contents of a building that will burn.
    • Live load: Weight of all materials and people associated with, but not part of, a structure.
  133. What are access stairs?
    Stairs within an occupancy, used to facilitate business activities.
  134. What is a fire tower?
    An external, enclosed stairway that is accessed from a building by steps through an area that has a fresh air source. A fireproof self-closing door seal each level of the tower.
  135. In commercial cooking systems, how often must spark arrestors be inspected/cleaned?
    Monthly.
  136. How often must commercial cooking system filters be cleaned or replaced?
    Monthly (by a CoF or a trained employee).
  137. The battery supply for a fire alarm system should provide for at least how many hours of service?
    24 h supervisory power, followed by 2 hr total system load.
  138. Fire command station equipment shall be modular so that repairs can be made by replacement of components by authorized personnel. How many spares must be kept on site?
    At least one of each replaceable part.
  139. What is the number of an official Fire Department key? Of a standard elevator key?
    • 1620 (FD)
    • 2642 (elevator)
  140. What is the purpose of photoluminescent exit path markings?
    They are designed to help illuminate a dark egress path in the event of power failures. (Illuminated exit signs are still required, but photoluminescent markings will help guide people to exits if the backup power to those signs fails.)
  141. What precautions must be taken to protect building occupants when a major building fire protection system is out of service?
    A fire watch must be held continuously be certified Fire Guards.

    (Exception: For the 1st 4 hrs, if the affected area is not more than 50,000 sq ft, the impairment coordinator or a trained, knowledgeable person can conduct the fire watch.)
  142. With what department must an affidavit of flame retardant treatment be filed within 10 days after installing/reinstalling a decoration?
    The Bureau of Fire Prevention.
  143. What permit is required for a refrigerating system installed in the residence portion of any building, or for a refrigerating system that employs air or water as the refrigerant?
    No permit is required. (Permits are required for systems that use Group A1, A2, A3, B1, B2, B3 refrigerants, or for systems that are mounted on or suspended from a roof or a ceiling.)
  144. In buildings that have carbon dioxide fire extinguishing systems, where are warning signs required?
    • In every room that is protected by a CO2 system.
    • At the entrance to the protected room.
    • Nearby the protected rooms.
    • Outside the entrance to the protected rooms.
  145. What is a mechanical smoke control system?
    A system that uses mechanical fans to produce pressure differences across smoke barriers, or that establishes airflows to limit and direct smoke movement. (It does NOT use natural ventilation systems.)
  146. What is a post-fire smoke purge system?
    A system that uses mechanical or natural ventilation to release smoke to the exterior of a building.
  147. In what case is an office building NOT required to be on site to operate an elevator?
    When the building is between 75 and 150' in height, and the elevators have Phase I and Phase II operations.
  148. Which device will normally provide the earliest warning of a fire - a smoke detector, or a heat detector?
    A smoke detector.
  149. Hot work permits must be available for inspection by the fire department at what time?
    During the work, and for 48 hours after the work is complete.
  150. What permit is required for a refrigerant system of less than 5 horsepower that uses a Group A1 refrigerant and is not mounted on or suspended from a roof or ceiling?
    No permit is required.
  151. What type of fire extinguishing systems shall NOT be used to protect commercial cooking and exhaust systems?
    • Dry chemical systems shall NOT be used to protect commercial cooking and exhaust systems.
    • (Carbon dioxide, foam-water, or wet chemical fire extinguishing systems may be used.)

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