Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NLO Systems > CM- Chemical Waste > Flashcards

CM- Chemical Waste Flashcards

1
Q

What three sub-systems makeup the CM system?

A

Radioactive Chem Waste- that collects the corrosive radioactive waste from the chemical lab and decon stations

Cooling Water Waste- that collects the chemically treated cooling water from the auxiliary and radwaste buildings for reuse or disposal. Cooling water holdup tank.

Condensate polisher regeneration waste- that collects and neutralizes the potentially radioactive waste for disposal if it is non-radioactive, or discharges to the liquid radwaste system if it is radioactive

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

Which of the CM sub-systems is a gravity collection system?

A

Radioactive Chemical Waste

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

Where does the CM Radioactive Chemical Waste collect its drains from?

A
  • Decon Room,
  • Special Decon room,
  • Sample hood and hot lab fume hoods,
  • instrument respirator maintenance and issue room,
  • and cold lab fume hood
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where do the CM Radioactive Chemical Waste collected drains go??

A

gravity feed to the chemical drain tanks

chemical drain tank pumps take suction from and discharge to LR Holdup Tanks

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

How many CM Cooling Water Holdup Pumps are there and what is their capacity? Location?

A

Two 100% capacity centrifugal pumps

40’ aux. building below cooling water holdup tank

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

Where is the water from the CM Cooling Water Holdup Tank pumped to?

A

Discharges to the Chemical Waste Neutralizer Tanks

There are branch lines provided for diverting the pump discharge to the EW surge tanks or to NC surge tanks

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

What is the maximum normal drainage to the CM Cooling Water Holdup Tank and what is the maximum abnormal?

A

Normal – 10 gal/day

Abnormal – 1500 gal/day

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

The Condensate Polishing Demineralizer waste sub-system consists of what components?

A
  • Two condensate polishing demineralizer sumps with two 100% capacity sump pumps
  • two chemical waste neutralizer tanks each equipped with an agitator
  • two neutralizer transfer pumps
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The Condensate Polisher regeneration waste can be divided into what two types?

A

High and low TDS

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

The CD Low TDS sump is filled from what two operations?

A

Final rinsing of the regenerated resin to remove all traces of acid or caustic

Overflow from the resin cleaning operation that removes particulates from the condensate polisher resins

(receives flows of low conductivity, <1000 ppm)

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

Where are the CD High and Low TDS sumps pumped to?

A

High TDS – to the chemical waste neutralizer tanks

Low TDS – normally pumped to the CW return line for reuse unless there is radioactive contamination, in which case the water can be discharged to the low TDS (LRS) holdup tanks. Can also be diverted to the neutralizer tanks via high TDS sump pumps discharge

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

What flows can the CWNTs receive?

A
  • CD high and low TDS sumps
  • Waste from cooling water holdup tank
  • the condenser area sumps, if there is secondary plant contamination
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the capacity of the CM Cooling Water Holdup Tank and where is it located?

A

5000 gallons

40’ Aux Building above the Cooling Water Holdup Tank Pumps

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

What is the maximum useable capacity of the Condensate Polishing Demineralizer Sumps?

A

2600 gallons

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

How many penetrations into the CD High TDS sump?

A

Two – One 4” line for equipment and floor drains and one 6” line for regeneration waste

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

Where are the Condensate Polishing Demineralizer Sumps located?

A

Southeast corner of the Turbine Building at the 100’ level along with the sump pumps

17
Q

What is the capacity of the Chemical Waste Neutralizer Tanks?

A

37,000 gallons each

18
Q

Where are the chemical waste neutralizer tanks located, and what are they equipped with?

A

Yard area north of the Turbine building

Equipped with one propeller type motor driven agitator

19
Q

What are the level alarms associated with the EW rooms CM sump level control?

A

Alarm in the control room for high level in the sump, and if level is 9” above the floor, high-high alarm will initiate

20
Q

What is the interlock associated with the CM cooling water Holdup tank pump controls and tank level switches?

A

two are for low and high level

one functions to shutoff the pumps in the event of a low level in the tank

21
Q

What can I expect to happen if a “loss of echo” condition occurs in the CWNT?

A

The processor is programmed to bring in the tank high level alarm and open the pump running circuit so that the CWNT pump will stop or cannot be started

22
Q

What powers all of the CM system pumps?

A

NH

23
Q

What is the normal discharge alignment of the CD High TDS sump and B/D high and low TDS sumps?

A

to the in-service CWNT

24
Q

How full do we allow the Cooling Water Holdup tanks to get before we pump it down?

A

~85% level

25
Q

Concerning the CM system, what is the adverse effect if the radioactive chemical waste drain system fails? Cooling water waste system? CD demin waste system?

A

Chemistry sampling will not be possible

level in the Essential Cooling Water Rooms could get high enough to make the system inoperable.

ability to regenerate the Polishers could be lost. This would adversely affect Steam Generator chemistry

26
Q

What are the CD High and Low TDS sumps provided with to protect plant personnel?

A

gas-tight covers and vented to the building HVAC

27
Q

Where are the CD demin sumps located? Where are the sumps vented to?

A

100’ turbine building southeast corner

building hvac

28
Q

What lubricates the intermediate and case bearings of the CD demin high and low TDS sump pumps?

A

pump discharge

29
Q

Describe the Chemical Waste Neutralizer Tank pumps. Location?

A

centrifugal

oil lubricated

mech. seals

yard area, below CWNTs

30
Q

What drains and overflows does the cooling water hold up tank receive?

A
  • NC surge tank
  • norm. chillers
  • EC circ. pump
  • A and B EW surge tanks
  • waste gas compressors
  • BAC
  • LRS evap
  • seal injection
  • LDHX shell and relief drains
  • A and B EWHX and pump room
  • A and B SDCHX
  • CVCS gas stripper
31
Q

Where are the chemical waste neutralizer tanks pumped to normally and abnormally?

A

retention tanks

LRS TDS hold up tanks

32
Q

The control room gets an alarm on what level in the CM sumps?

A

high-high

33
Q

Describe the chemical waste neutralizer tank level switches.

A

“loss of echo” brings in high alarm and prevents pump start

high level alarms the control room

low level stops the neutralizer transfer pump

34
Q

What is done prior to sending cooling water holdup tank contents to the chemical waste neutralizer tanks?

A

sampled for radioactivity

tank contains chemically treated cooling water during certain maintenance operations

35
Q

Concerning the CWNT transfer pumps, what are the interlocks associated with tank level and the cross-over valve?

A

if the cross-over valve is open and either tank gets a lo-lo level, both pumps are stopped

NLO Systems (66 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions