Flashcards in Evolution 8 Relay Water Deck (14)
When no viable water source is found by operating pumper (normally first due) what should be transmitted and by whom?
A 10-70 should be transmitted over department radio and HT by the office for ECC
Who is designated Water Resource Unit at a 10-70?
Next arriving pumper after 1st
What hydrant connections are used to feed the supply pumper?
Either the10 foot or 35 foot connection
When you supply the operating pumper with 3 1/2 hose you should connect where on operating pumper
Connect to 3" gated inlet on panel side from 3" outlet of supply pumper
The operating pumper and supply pumper must always operate in Volume position
Not always the operating pumper must be in pressure position if need to overcome head pressure : ie standpipe
The ECC of supply pumper SHOULD do the following before he is ready to feed operating pumper
Open hydrant fully
Set readings PPG to match idle pressure on pump pressure gauge
Communicate he is ready
Slowly open discharge gate when water called for
What will the pressure on the pump pressure gauge of the supply pumper be after he engages the pumps?
It will be equal to the intake pressure from the hydrant plus the pressure the pumps idle at in volume (55 psi) in volume and 110 psi in pressure
NOTE : pump pressure will be between 100-125 psi in volume
Exception Staten Island
While waiting for water from the supply pumper the ECC should leave the gated inlet open so air is expelled from line
No he should leave the gate closed while also leaving drain to gated inlet open once good water flow OSS observed coming from drain close drain air is now expelled from the line
If already supplying water to handline(s) via booster water the operating pumper will to set he's pro pressure governor when should he do this
After the intake gate is opened fully and discharge gates are adjusted on hand lines to accommodate the increased pressures he then sets the pro pressure governor to match pump pressure gauge
When being supplied via relay the operating pumper intake pressure should not drop below 15 psi if it does what should be done ?
The ECC of the operating pumper should request to increase throttle (tap up pro pressure governor in increments of 10 psi
If the supply pumpers intake pressure drops below 15 psi he should notify whom and tell them what ?
If the operating pumpers intake pressure exceeds 150 psi or the automatic relief valve discharges what should he communicate to supply pumper ECC
Should insure supply pumper is in volume position
NOTE relief valve will discharge if inlet pressure is between 150 to 175
If possible it is better to supply hand-lines before setting up relay. Agree or disagree
Disagree better to set up relay