General Task Ops Flashcards
How many times can you operate an MOV in a 1 minute period? What is required if that limit is reached?
If you operate 5 times in 1 minute, you must wait 30 minutes
How long must you hold a THROTTLE valve after full closed indication?
10 seconds
How long must you hold the 2-1301-3 valve control switch after full closed indication?
5 seconds
How long must you hold a Seal-In Valve Control Swithc?
3 seonds to allow for contacts to seal in.
What is the basic sequence for stating a centrifugal pump?
Close discharge valve, start pump, open valve
What is the hazard associated with pressurizing improperly filled and vented systems?
Voids will compress when system is started. Water Hammer will occur for systems like SDC, RR and RWCU. This will ultimately result in loss of Rx Inventory
What is the general sequence for properly restoring a valve motor that failed during operation?
1) Wait approximately three (3) minutes to allow thermal overload to cool.
2) Reset the thermal overload.
3) Operate the valve manually through the first part of the stroke.
4) Electrically operate the valve.