Deck 76 Flashcards
Define, 10-25-4
Fire or smoke condition from a transformer at ANY location, i.e., pole, vault, room, etc. 180 1.1
When does the utility company immediately dispatch an emergency crew?
upon receipt of a Code 1 or Code 4 signal. 180 1.3
Discuss line placement at manhole fires/emergencies. 180 2.4 and p3 note 6.
Precautionary hoselines shall be stretched as necessary. Units should not operate into manholes unless requested by a Con Ed. If requested to place water into a manhole, do not direct the stream directly into the manhole. Instead, let water flow or pour into the manhole. Use a fog nozzle to reduce or prevent shock hazard.Hose lines stretched in the street to prevent involvement of adjacent properties should bepositioned at a point beyond the predictable limits of fire or explosion damage.Where conditions indicate the electric lines in a building are becoming hot, hose lines shallbe stretched and a thorough examination made.Due to the amount of flammable liquidcontained in these transformers, Engine Companies shall also be preparedto initiate a foam operation if the need arises.180 2.4, p3 note 6, 8, 3.3.B
When the expected time of arrival is more than 30 minutes, the Officer in Charge has what options?
One member left at scene unit responds to alarms.One member left at scene unit returns to quarters. COMPANY OFFICER provides for relief.When member is left at scene, COMPANY OFFICER shall at frequent intervalscontact the dispatcher for re-notification of the utility company.Tape off and Take up180 2.6
When does the BC provide for relief of units or members at Manhole emergencies?
During periods of MULTIPLE INCIDENTS within an area. One or more units shall be relieved from response assignments and utilized as follows: A. A member of the unit shall be left at the scene of each incident.B. The officer and the chauffeur shall remain with the apparatus to performsurveillance of the incident locations.
T?F If CO readings are obtained in ELECTRIC, SEWER or any other utilityMANHOLE(S), the surrounding structures must be checked.
False. GAS readings. TB Em 2 p14
When are SEWER manhole covers removed?
Removal of SEWER MANHOLE covers can be performed by FDNY personnel with the approval of an ON-SCENE Chief Officer.TB Em 2 p15
When can FD personnel remove ELECTRIC MANHOLE covers?
When requested by a utility company gas representative ON-SCENE and approved by an on-scene Chief Officer. TB Em 2 p15
When do we NOT pull manhole covers?
o DO NOT pull rectangular or square electric manhole covers.o DO NOT pull any electric manhole covers if there is a manhole fire in the area orif a smoking or arcing is observed in an electric manhole or transformer vault.o If in DOUBT as to which type of manhole is affected or if there is obvious smokeUNDER PRESSURE or electric arcing DO NOT remove the manhole cover.Do not pull the electric meter or open a circuit breaker if gas is found in a building.
A typical transformer vault is what size?
12x4. These vaults are installed either in the street or the sidewalk below grade level.180 3.1.A
Define “Internal” Transformer:
Those transformers within or having access to the interior of a building. 266 add1 1.5.1
Define “External” Transformer:
Those transformers having no access to the interior of a building. MOST will be in underground vaults under either sidewalks or streets. with gratings on top of the vaults. SOME will be in “walk-in” vaults at groundlevel enclosed on all sides with a means of egress.
All transformers that are in the vaults contain dielectric oil, which acts as a coolant, in what amounts?
amounts ranging from 200 gallons to 600 gallons. 180 3.1.D
SUN-OIL or MOBIL-X is what type of dielectric oil?
SUN-OIL or MOBIL-X contains PCBs in the range of 10- 49 PPM and therefore is considered a Non-PCB Transformer.180 3.1.D
Which is the greatest hazard in these vaults?Carbon MonoxidePVC in wire insulationhigh vapor pressuresasbestoselectricity
All are hazards, The greatest hazard of course is the amount of electricity that is contained in these vaults. 180 3.2.D