ML19224A946
| ML19224A946 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/16/1978 |
| From: | Metropolitan Edison Co |
| To: | Mullinix W NRC/IE |
| References | |
| 1953, TM-0192, TM-192, NUDOCS 7906130268 | |
| Download: ML19224A946 (3) | |
Text
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TMI DOCLM NTS DOCUMENT NO:
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COPY MADE ON M, 2, 2f 0F DOCUMENT PROVIDED BY METROFOLITAN EDISON CCMPANY, k_s '
'n'ilda R. Mullinix, NRC 178 35T r.- b
<G 7906130 AC / /"
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1953 g-Revision 2 10/16/78 PC.'l\\'TRn' ! r I I I i W ' ---
THREE MILE ISLAND NUCLEAR STATION v
STATION CHEMISTRY PROCEDURE #1953 A.--m MMD1CI.
DETERMINATION OF UNDISSOLVED SOLIDS (CRUD)
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Teeie of erfective eases Pace Date Revision Pace Date Revision Pace Date R evision 1.0 10/16/78 2
26.0 51.0 2.0 11/12/76 1
27.0 52.0 3.0 28.0 53.0 4.0 29.0 S 4.0 5.0 30.0 55.0 6.0 31.0 56.0 7.0 32.0 57.0 8.0 33.0 58.0 9.0 34.0 59.0 10.0 35.0 60.0 11.0 36.0 61.0 12.0 37.0 62.0 13.0 38.0 63.0 14.0 39.0 64.0 15.0 40.0 65.0 16.0 41.0 66.0 17.0 42.0 67.0 18.0 a 3. 0 68.0 19.0 44.0 69.0 20.0 45.0 70.0 21.0 46.0 71.0 22.0 47.0 72.0 23.0 48.0 73.0 24.0
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49.0 74.0 25.0 50.0 75.0 Unit 1 Staff Recor ments 4 prowl Unit 2 Staff ReommendA A proval Approval Date Approval
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CognilanNTep't. 63d CagnInntlept. Head Unit 1 PORC Recommer,ds App:c at Unit 2 PORC Recommends Approval
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1953 Revision 2 10/16/78 THRE' MILE ISLAND NUCLEAR STATION STATIO! CHEMISTRY PROCEDURE NO. 1953 Determination of Undissolved Solids (Crud) 1.0 SU" MARY The tetermination of undissolved solids (crud) by filtration at very low levels is difficult due to gains or losses of weight in the filter itself.
Loss of weight can be due to loss of material from the bottom of the filter.
A gain could occur if the solvent contai ad non-volatile components which are not driven from the filter by drying at 110 C.
A tared " control" filter is series with the filter which is to collect the undissolved solids provides a means of compensating for such gains or losses of weight.
2.0 AIPARATUS 2.1 Vacuum Pumo 2.2 Vacuum Flask --
2.3 Millipare Filter Holder (or equivalent) 2.4 Millipore Filters, 0 45 micron (or equivalent) 2.5 Drying Oven
- alytical Balance 2.6 n
3.0 JEAGENTS 3.1 Nine Required 4.0 P!OCECURE 4.1 Dry two marked (top, bottom) new millipore filters to a constant weight in drying oven, then cool in dessicator.
4.2 Weigh cut the filters to the nearest 0.1 mg.
4.3 Clean filter assembly and assemble to the vacuum flask and place the two pre-weighed filters, smcoth face up, on top of each other 7
on the filter assembly.
Mcistening the assembly may facilitate th_e, 178 3bb retention of the fil ters.
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1953 Revision 1 11/12/76 4.4 Place the top of the filter assembly over the filters and clamp it in place.
4.5 Filter an appropriate volume of sample (up to three gallons if needed) through the double filter. Use vacuum.
1 4.6 Remove the filters af ter washing with demineralized water and dry U
to a constant weight at 110 C.
Cool in a dessicator. Make sure that the top and bottom filters can be identified.
4.7 Weight the filters to the nearest 0.1 mg.
4.8 Calculate the amount of solids collected as follows:
a.
If the bottom filter shows a loss in weight, add this loss to the change in weight of the top filter.
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b.
If the bottom filter shows a gain in weight, subtract this gain frcm the change in weight of the top filter. --
NOTE:
In either case assign a positive sign to a gain in weight of the top filter and a negative sign to a loss.
'he ccabination of the changes of weight represents the amount of solids collected from the filtered volume.
4.9 Calculate the ppm of undissolved solids by the folicwing formula:
6 PFM solids = wt. solids (in crans X 10 volume liquid filtered (in mi) 5.0 REFERENCE 5.1 1973 Annual Book cf ASTM Standards, Part 23, D 1888-67, 10.3.1-
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