Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Control Room > Control Room Questions > Flashcards

Control Room Questions Flashcards

1
Q

What are the interlocks of the pulper pump?

A

Hydrapulper level low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

First step in cold start up procedure?

A

Walk down entire system. Make sure all the drains are closed, pumps are in dcs and breakers are thrown in. Check all manual valves. Notify control room when complete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What day is effluent compliance?

A

Tuesday from 7am - Wednesday 7am (24 hrs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What forms/permits are the control room operators responsible for?

A

Red tag (fire system), hot work, fire pump usage, start up/shutdown checklist, boiler pop off checks, boiler trip checks, elog

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What’s the maximum allowed flow to the city? What is our target? Compliance day?

A

1.6 million gallons
Target- 1.3 million gallons
Compliance day- 650,000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What’s the allowed ph range to the city?

A

5.5-9.0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do you do if the mill water pressure drops out?

A

Check usage page and make sure something isn’t pulling more flow than normal. If not call the city

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are potential causes of low pressure on the showers?

A

Barrel filters are plugged make sure they’re cycling

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you bypass the float purger?

A

Swap chain valves, click the bypass button

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why would you close off overflow and bypass valves out in the pond?

A

Upset situations, shut down days, potential chemical spill, going over compliance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Can you tell from the dcs that an air compressor has dropped out?

A

Yes. Go to your utility page and it has the kilowatts for each compressor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What areas outside of the mill is occ responsible for?

A

Mill water cooling tower, pond, aerators, bunker, parshall flume.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What’s the purpose of the bypass on the pumps?

A

So that one step can have an isolated shutdown and not shut down the process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the interlocks on the rotor?

A

Lube unit not running (temp/pressure) seal water pressure low

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How do you know if you have a broken oscillating shower head?

A

Low pressure on your shower water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the responsibilities around the fire system?

A

Report, red tag, eyes on pumps, weekly checks, gaitronics/ radio communication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What can be potential causes of a screen having a low load?

A

Belts burnt off, hole in basket

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Why would you want to bypass the float purger?

A

To shutdown and work on the float purger or secondary course

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How do you ensure you aren’t back flowing into the chest.

A

Make sure the accepts and rejects combined is greater than the feed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How do you safely do a bump check?

A

Good communication between field tech and control room

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are interlocks on the thickener?

A

Shower water valve, shower water pressure, shower speed and repulper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

During non staff hours what are control room operators responsibility’s during upset conditions?

A

Assist with communication to staff/management keep the phone line clear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How do you respond to a pink ready light?

A

Make sure local switch is in dcs, check breaker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What steps do you do when a screen blinds over?

A

Cut back on accepts, open rejects ad dilution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What is the importance of having gray water going to primary fine screens?
Dilution and make sure we aren’t back flowing into gray chest
26
What are ways to help field tech unplug the cyclones?
Add back pressure
27
What’s the time interval between starting up quat feed pump and the primary feed pump before it shuts back down?
75 seconds
28
What are the interlocks on the mc pump?
Clear white water shower pump, standpipe low level, seal water flow low for 1 hour
29
What do you do in response to a high level?
Spin the wagon wheel or cut back flow to the thickener
30
What are interlocks on hydra purge?
Seal water pressure low, e stop
31
What are interlocks on scavenger?
Seal water pressure low, e stop
32
What to do at a high load on reject sorters?
Dump the float purger, adjust dump times, worst case send to screw presses
33
Why/How would you apply a step change?
Why- if it’s hung up in a step, didn’t have time to go through complete shutdown sequence. How- click apply step change button
34
How to tell pressure in cleaners?
Manual gauge in field
35
How is level controlled in thickener?
By the speed of the thickener
36
Why would you pay attention to gallon flow and pressure on screens?
Plugging
37
How do you know something is wrong with repulper screw?
Lose the load, speed switch will trip, lose level in the mc standpipe
38
What do you do if the rotor trips?
Make sure stock dilution is at 0, shut down the sumps
39
How do you shut down scavapurge?
Hit the shutdown button on the face plate
40
What do you do when a screen has a high load?
Dilution, cut off feed
41
What’s the purpose of dilution water?
Dilution
42
What are interlocks on the mill water cooling tower supply pump?
Valve has to be open greater than 30%, white water tank level low for 10 min
43
What is the purpose of the water into the repulper?
Used to help consistency, amp load, and to covey the stock down the repulper screw
44
What are the interlocks of the reject sorters?
Shower water valve must be open, speed low, vibration high, clear white water low pressure pump
45
If you lose reject flow how do you get it back?
Open reject, close back accepts until pressure equalizes (if all else fails start/stop pump)
46
Why would you thicken up while pulling broke while paper machine is down?
To use more water so you aren’t overflowing the chests
47
Why does it trip out at low level?
At a certain point the blade on the agitator came out of the water
48
How would you react to the secondary reverse cleaner standpipe over flowing?
Turn the bypass on and start/stop the pump. Due to cavitation of the pump
49
If you can’t get a start on the conveyor what are the possible causes?
Pulped not running, rotor no turning, hydraulics on cutter, pulper high level, overloaded conveyor, e stop, breaker on conveyor
50
How to start the scavapurge?
Must hit scavapurge, then start button
51
What’s the purpose of the pause/play button?
Pause hold it right where it’s at. Play- normal operation
52
How do you know when to do an offline cleaning for the petax?
Feed pressure gets high
53
What would kick out the agitator?
Low level
54
What the proper way to cut back the feed?
Cut feed to primary reverse first, accept from primary reverse second (vice versa to add flow back)
55
What are potential causes of low load on the hydra purge?
It could be plugged, rotor is off
56
How do you empty the pulper out?
Turn on bypass
57
What’s a permissive on the screens?
Must have seal water to start, once pump starts seal water shuts off
58
What should the dilution valve position on the fru’s prior to start up?
30% or less
59
How does the temperature control loop work?
Temp drops - flow goes to basin. | Temp rises - flow goes through tower and fans turn on
60
How and when to force a regin
High hardness, change total gallon flow, or advance softener steps
61
What direction does the water flow between chest?
Clear to dirty Clear - gray - course
62
What are reasons your cleaner pumps won’t start?
Breaker, dcs switch, gray water valve closed
63
What are ways to dilute the fine screens if the DP or load gets high
Cut back on accepts from course screens, pulling more gray water, open up the dilution going to primary course
64
What can be a common cause of the scavenger sequence interrupting?
A valve has timed out trying to open/close (valve hung up)
65
Reasons for running dlk?
Clean the system out, helps through put
66
Why is it important to notify inbound before starting conveyor?
So a gap doesn’t form on the line, safety concern for inbound techs
67
What is the theory of the clarifier?
Recycled water is taken from the clarifier and pumped through the recirculation pump to the ADT where it is mixed with air and sent back through the feed line that mixes with polymers which makes stock stick together and floats up by air bubbles. A rotating spiral scoop takes sludge off the top and lets it slide to the center ring to the screw presses. The drain blows down sand to the screw presses and the clarified water goes to the gray chest
68
Describe how the primary reverse cleaners work?
Feed comes in towards the middle, centrifugal force develops a separation and the accepts go out the bottom and the rejects go out the top
69
Respond to a broken ragged tail what are the steps to starting a new tail?
Make pull rope and ragged rope, put barriers in place and turn warning light on, pull any ragged tail left in ragged drum, hook pull rope to winch, lower to pull broken ragged tail all the way out, hook ragged to winch and lower to start new tail
70
What is the proper PPE for power washing
Goggles, face shield with chin guard, apron, steel toe boots, metatarsals, and gloves
71
What’s the general purpose of the disc thickener?
To thicken the stock from the primary reverse cleaners and to send the desired consistency to the HD chest. Also a source to pull broke
72
What’s the purpose of the pulper lube unit
Lubricate hydrapulper gears and keep them cool
73
Purpose of reject sorters
Last stage of recovery for the coarse screen reject loop
74
What is the purpose of the pulper
To permit pulped occ or stock to leave the tub whenever the correct material size is reached
75
Purpose of cyclones
To remove high and medium specific gravity contaminants from the stock
76
The purpose of screens
To remove oversized troublesome and unwanted particles from the good fiber
77
What’s the purpose of the float purger
To reclaim fiber from the coarse screen rejects
78
How many coarse screens and fine screens do we have
2 coarse screens and 4 fine screens
79
Purpose of the scavenger / hydrapurger system
To remove light and heavy weight contaminants from the hydrapulper
80
Explain the steps how to clean the MP shower filters
Close MP valve, lock, turn to hand, remove cap, pull filter, power wash with proper ppe
81
What does rst stand for
Rotary screen thickener
82
Loacation of main control valves v1, v2, v3, v6, v8, v9, v10, v11, and v12
``` V1- inlet to scavenger V2- scavenger dump valve V3- top of scavenger. Wash water for scavenger V6- top of scavenger flush water for v1 line V8- discharge scavenger to hydrapurger V10- stock dilution for wash V11- hydrapurger accepts back to pulper V12- hydrapurger accepts to pulper pump ```
83
What is ADT
Air dissolving tube
84
What is the purpose of the forward cleaners
To remove contaminants that weigh more than stock
85
What are the process clarifier inputs
Cleaners reject tank, polymer, air
86
Location of hydrapulper feed conveyor e-stop
Runs along side of conveyor with the cat walk
87
Where do the accepts from the primary forward cleaners go
Primary reverse cleaners feed pump

Control Room (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions