ML20058H561
| ML20058H561 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 01/20/1981 |
| From: | Stuart C, Wedgeworth B, Gerald Williams MISSISSIPPI POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20058H456 | List: |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.3, TASK-TM 08-S-04-104, 8-S-4-104, NUDOCS 8208030620 | |
| Download: ML20058H561 (9) | |
Text
.
PLANT OPERATIONS MANUAL to AECM-82/339 Volume 8 08-S-04-104 Section 04 Revision 2 Date: 1/20/81 CEEMISTRY INSTRUCTION 1
OPERATION OF CONDUCTIVITY BRIDGE SAFETY RELATED j.
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Prepared.
pu7 a Reviewed:
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'lec'hnical Revisdli Independee. Review
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App:oved:
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a,E Assistant Plant Manager List of Effective Page's:
Pcge:
Revi.sion 1-5 Rev. 2 Atts. I-III Rev. 0
+
8208030620 B20730 PDR ADOCK 05000416 P
edS2flwSt IM(sGMB 58AIION C'dE."J.STPJ INSTP.UCIION l
Title:
Oparction of Conductivity i No.:06-5-04-104 lR2 vision: 2 lPage: 1 l
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Bridge 1
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1.0 INSTEUMENT DESCRIPTION Leeds & Northrup Conductivity Bridge Model No. 4959 2.0 REFERINCIS 2.1 Leeds and Northrup Instruction Manual - Model 4959 (177335) 2.2 Che=is try P ocedure No. 08-S-03-01 4
'2.3 Che=istry Procedure No. 08-S-03-5 3.0 DEFINITIONS None I
4.'O PREREQUISITES 4.1 Apparatus Required 4.1.1 Unknown cell (Dip or flow) 4.2 Reagents Required 4.2.1 Potassium-Chloride Standard (0.001, 0.01 or 0.lN) 4.'3 Resistors of certified values 5.0 PRECAUTIONS 5.1 Avoid sudden introdu: tion of very hot or very cold water to avoid possible cracking of g' ass parts.
5.2 When used in battery mode, ensure case of instrument is grounded.
5.3 Replace battery every 8 to 10 months regardless of usage to minimize the possibility of instrument damage from leakage.
5.4 Allow the conductivity cell to remain in the electrolyte under test for one minute to reach electrolyte temperature.
6.0 INSTRUCTIONS 6.1 Ins trucent Startup NOTE The following procedure applies to a conductivity bridge utilizing a dip cell, except where indicated.
- RAND GULF NUCLEAR STATION CEEMISTRY INSTRUCTION l
Title:
Operation of Conductivity l No.:08-S-04-104 i Revision:
2 i Page:
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6.1.1 Select power source to be used.
For line voltage operation, plug line cord into a nominal 120-volt 50/60 hertz power supply having a grounded third wire.
For portable operation, power is provided by the internal battery source.
6.1.2 Adjust the mechanical zero of the galvanometer by setting the i
BRIDGE SUPPLY switch to the OFF position and unclamping the
' -/galvanome t er.
Turn the galvanomster zero adjuster until the
~ -
pointer comes to rest at zero.
6.1.3 A'djust the electrical zero of the instrument by placing the BRIDGE SUPPLY switch _ at the frequency to be used for measuring; normally
?
50-60 Rz.
6.1.4 See the MULTIPLIIR to the CK position.
6.1.5 Set the ohms scale at 2.000 6.1.6 Adjust the ZERO knob until the galvanometer needle indicates zero.
6.1.7 Set the compensator by locking down the detector key and adjusting the compensator knob until the galvanometer pointer comes to rest at the =ero position.
6.1. 8 Restore the ins trument to a standby condition by placing the BRIDGE SUPPLY switch to 0FF.
~~
6.2 ' Functional Check 6.2.1 Conductivity Bridge I
Functional check frequency specified in the a.
Calibration / Functional Check Log Book.
4 b.
Ensure instrument start-up in accordance with 6.1.
c.
Verify instrument is within prescribed calibration du,e-dates.
d.
Connect the leads from the certified resistor panel' to the instrument CELL BIE INO posts.
Place the Bridge Supply switch to the 50/60 Hz posit ion.'
e.
-r - -
.f Select any -resistor value on the certified r=sistor panel.
g.
Depress the DETECTOR KEY, and select the multiplier range' that most closely corresponds to the resister selected in 6 2.1.f.
(i.e., a 500 ohm resister would correspond to the altiplier 2
i range marked 10 ),
~
GCAND CULF NUCLEAR
- STATION CHEMISTRY INSTRUCTION l Titlo: Op3 ration of Conductivity i No.:08-S-04-104 i R2visica:
~2 i Pego:
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h.
Rotate the SCALE SETTER until the galvanometer needle rests at zero.
This value should correspond to the certified resistor value, within a tolerance of f_ 2%.
Note the reading.
i.
Repeat steps 6.2.lg. and 6.2.lh. with resistors covering the expected range of antlysis.
Note the results.
j.
After the necessary resistor ranges have been checked, place the BRIDGE SUPPLY switch to 0FF, release the DETICTOR knob to the up position, return the MULTIPLIER to the CK, position, and disconnect the leads from the CELL BINDING posts.
k., If any reading does not fall within the acceptable limits, contact the LEAD LABORATORY CFIMIST.
I 6.2.2 Constant Determinations a.
Cell constants will be determined semi-annually, recorded on Attachment III and inserted in the proper section of the Conductivity Cell Determination Book.
b.
Ensure instrument start-up in accordance with 6.1.
c.
Verify instrument is within prescribed calibration due dates.
d.
Connect the Cell of the requir.ed range to the conductivity bridge.
e.
Rinse the cell in the Potassium Chloride solution to be used for cell constant deter =ination.
f.
Immerse the dip cell, or if using a flow cell, provide a flowing stream of the proper Potassium Chloride solution (0.001N for 0.01 cell constant, 0.01N for 0.1 cell const' ant or 0.lN for 1.0 cell constant).
g.
Measure the temperature of the Potassium Chloride solution and deter =ine the specific conductance from the proper graph located in the front of the Conductivity Cell Determination Book. The graphs we,re plotted from the follovi,ng information:
Normality (KCI)
Te=p. C Specific Conductance (Microtho/c=)
0.1N O
7,138 15 11,I67 15 Sg,g5s 0.01N O
774 18 1,220 25 1,409 0.001N O
80 18 128 25 147
- ?
l
Title:
Operation of Concuctivity l No.:08-S-04-104 i Rsvision:
2 i Pega:
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h.
Ad jus t the SCALE SEA A:R until a null condition is obtained on the galvanometer.
i.
Calculate the cell constant using one of the following equations, depending upon whether the reading observed is in resistance or conductance values respectively.
K = RmGs or K = Gs E
3 Where K = Value of cell constant (CM-1)
Rm = Hessured resistance of electrolyte (ohn)
CM = Measured conductance of electrolyte '(mho)
Gs = Specific conductance of electrolyte mho/cm at solution temp.
.t, j.
When the constant of a particular cell has been determined by the above instruction and falls with'in + 10ll of the
~
manufactured value, it may then be used in normal evolutions.
i r
k.
Place the BRIDGE SUPPLY switch to 0FF, release the DETECTOR knob to the up position and return the MULTIPLIER to the check L
position.
6.3 Analysis 6.3.1 Verify instrument start up in accbrdance with 6.1.
l 6.3.2 Verify instrument is within prescribed calibration due-dates.
l 6.3.3 Verify functional check performed within proper time frame as stated.
in the Calibration / Functional Check Book.
l 6.3.4 If necessary, connect the leads from the conductivity cell to, the instrument CELL BINDING posts.
6.3.5 Dip Cell Rinse the cell in demineralized water, gently shake off the a.
excess.
Do not. attempt to blot or blow dry.
b.
I=merse the cell in the solution to be measured ensuring any entrapped air is removed.
6.3.6 Flow Cell
. a-g_.
e.
Connect the cell to the sample stream to be measured.
b.
Start the sample flow and adjust the flow rates to approximately 100 ml/ min.
NOTE:
High flow rates may damage be flow cell.
l r-
GRAND GULF NdCLEAR STATION C
STRY INSTRUCIION l
Title:
Oparation of Conductivity i No.:08-S-04-104 i R: vision:
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l 6.3.7 Place the BRIDGE SUPPLY switch to the 50/60 Hz position.
Depress the DETECTOR KEY.
Note the position of the galvanometer needle as you rotate the MULTIPLIER switch from the CK position.
(For conductance measurements, the rotation is toward decreasing values until the needle deflects to the left).
Adjust the MULTIPLIER switch and rotate the SCALE SETTER until the galvanometer needle rests on zero.
Note this reading and the =altiplier setting.
NOTE A sustained null ( ero) reading may not be possible when using a dip cell on decineralized water samples due to carbon dioxide absorption.
t-6.3.8 Measure the temperature of the solution; note this reading.
6.3.9 Release the DETECTOR knob, restore the MULTIPLIER to the CK position, and place the BRIDGE SUPPLY switch to the OFF position.
6.3.10 Calculate the measured specific conductance by using the following formula:
Cs (T)
= M x S x C x 106 umho/mho Where Gs (T) = Specific conductance at temperature T (u=ho/cm)
M = The multiplier setting (For conductance)
S = The scale setting (cho)
C = The cell constant (c=-1)
If the measured specific conductance is greater than 1 -
a.
umbo /cm, the specific conductance is calculated by using the following formula.
Gs (25*C) = Gs(T)
ICF Where Gs (25' C) - Specific conductance' at 25
- C (umho/cm)
Gs (T)
= Specific conductance at temperature T (umho/cm)
= Temperature co=pensation factor obtained by taking the temperature reading of step 6.3.8 and finding f actor from the table in Attachment 1.
b.
If the measured specific conductance is less than 1 umho/cm, the specific conductance at 25"C is read from the graph in Attachmen: II.
7.0 DOCUMENTATION / CORRECTIVE ACTION 7.1 Documentation of results and functional check data shall be in accordance with Chemistry Procedure 08-S-03-3.
CRAND CULF NUCLEAR STATION CHEMISTRYINSTRUCTIbN l
08-S-04-104 i
R v. O I
l-Attcchz';nt I l Par 2 1 of I l
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I TEMPERATURE RATIO vs TEMPERATURE (for water ranging from 1 to 10 u=hos/em at 25 C (77F) l Te=perature l
Tc=pera:ure i
Te=perature i
Te=perature l
l C
l Ratio l
C l
Ratio l
I i
i i
I l
0
-l 0.523 1
51 l
1.619 l
l 1
1 0.539 l
52 l
1.644 l
l 2
l 0.555 l
53 1
1.671 l
l 3
1 0.572 1
54 l
1.698 1
l 4
1 0.589 l
55 l
1.723 1
1 5
1 0.607 l
56 l
1.749 l
l 6
1 0.625 l
57 l
1.775 l
l 7
l 0.643 l
58 l
1.802 1
8 1
0.661 1
59 l
1.827 l
l l
9 1
0.679 l
60 l
1:852 l
3 1
10 1
0.698 l
61 l
1.877 l
l 11 1
0.718 1
62 1
1.903 l
l 12 1
0.737 1
63 l
1.930 l
i 13 1
0.756 l
64 l
1.956 l
l 14 1
0.776 1
65 l
'1.982 l
l-15 1
0.796 l
66 l
1.009 l
l 16 1
0.816 l
67 l
1.035 l
l 17 1
0.836 l
68 l
1.063 l
~l 18.
1 0.855 l
69 l
2.090 l
~
I 19' l
0.875 l
70 l
2.117 1.-
l 20 1
0.897 l
71 l
2.144 l
l 21 1
0.918 l
72 1
2.170 l
l 22 1
0.938 I
73 l
2.198 l
l 23 l
0.959 l
74 j
2.226 I
I 24 l
0.980 l
75 l
2.255 l
l l
25 l
1.000 l
76 l
2.284 l
l 26 l
1.022 l
77 l
2.312 l
l 27 l
1.046 1
78 l
2.340 l
[
l l
28 l
1.069 l
79 l
2.369 l
1 29 l
1.092 l
80 l
2.398 l
l l
30 l
1.114 l
81 l
2.427 l
l 31 l
1.137 l
82 l
2.456 l
l l
32 l
1.161 1
83 l
2.484 l
l l
33 1
1.184 l
2.513 l
l 34
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1.208 l
85 l
2.544 l
i l
35 l
1.231 l
86 l
2.573 l
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l l
36 l
1.254 I
87 l
2.603 l
l 37 l
1.278 l
SS 2 633 I
l 38 l
1.302 l
89 1
2.663 i
l 39 l
1.3 25 l
90 l
2.693 I
l 40 1
1.349 I
91 l
- 2. 72!.
41 1
1.373 1
92 1
2.75 i
l 1.398 l
93 l
2.785 l
l 42 l
43 l
1.422 1
94 l
2.815 l
l 44 l
1.446
'l 95 l
2.846 I
~l 45 1
~ 1.470 l
96 l
2.878-l i
l 46 l
1.494 l
97 '
l 2.910 l
l 47 l
1.519 l
98 l
2.940 l
l 48 l
1.545 l
99 l
2.970 l
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'1.570 l
100 I
3.000 l
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. GRAND GULF NUC EAR STATION CHEMISTRY INSTRUCTION I
0'8 5-04-L64 i Rev. 0 l
s Attachm2n: II l Pege 1 of 1 l
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GRAND CULF trJC:. EAR STATION CEDilSTRY INSTRUCTION 1
05-5-04-106t Rev. 0 l
l Attachment III I Pega 1 of 1-l ATTACEMENT III Conductivity Cell No.
Cell type DIP / FLOW Date Placed in Service Cell Constant 0.01/0.1/1.0 Cell Constant Limits (+ 101)
.009
.011
.09 -
.11
.90 -
1.1 DATE I
LOCATION l CELL CONSTANT I PJf. ARKS l
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