ML20085H224

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Monthly Operating Rept for May 1966 for Saxton Nuclear Experimental Corp
ML20085H224
Person / Time
Site: Saxton File:GPU Nuclear icon.png
Issue date: 05/31/1966
From:
SAXTON NUCLEAR EXPERIMENTAL CORP.
To:
Shared Package
ML20083L048 List: ... further results
References
FOIA-91-17 NUDOCS 9110280177
Download: ML20085H224 (6)
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SAXTON IUCLEAR DCPDiIMDITAL CORPORATION Operation Report for May 1966

1. REACTOR OPERATIO"S The reactor was operated at full power, 23 5 MVt, durin;; the entire month of May in continuation of the test program to develop information concerning the '

utilization of plutonium enriched fuels in pressurized water reactors. The main coolant boron concentration was decreased from 1222 ppm to 1148 ppm during the month to compensate for fuel depletion.

2. EXPERIMENTAL PROGRAM The primary objective during the month was to continue the burn-up of the plutonium fuel.

Main coolant pH versus reactivity tests were conducted during the month .

The hot pH was reduced frcn 7.07 to 5 38 by decreasing the lithium concentratich from 1.27 ppm to below 0.015 ppm by demineralization. The main coolant temperrt art. accrease associated with the pH change was 9.800F, The lithium concentration was *,nen allowed to increase from 0.011 p;n to 0.054 ppm by natural build-in. The bund-f.n rate wu determined to be 22 ppb of lithium per day. The temperature' change ap%ciated with the lithium change of 0.043 p;n was 5 F.

On May 26th an all rods out boron concentration at 510 F was determined to be 1215 ppn.

3 OPERATIONAL TESTS On May 5th the radiation monitoring system circuits were tested.

A nomal test of the safety injection system was conducted on May 16th.

I 4. PAINT'ANCE The principal items of mechanical maintenance during the month included replacing the carbon vanea and the bearings in the. air pump for the sample room alpha monitor; replacing the pistons and bearings in the air pump of the stack particulate monitor; replacing the diaphragm in the drain valve of RWDF gas decay tank No. 2; cleaning the RWDF liquid discharge tanks; installing a manual shut-off valve in the nitrogen purge line to the containment vessel discharge tank; installing unions in the RWDF evaporator feed line to facilitate removing the feed eductor for cleaning; sealing cracks in the pipe tunnel roof; replacing the pre-filters in the containment vessel exhaust air handler; disassembling and removing tanks and* connecting piping used for the crud experiments; processing four drums of RWDF evaporator bottoms; installing a steam shut-off valve in the steam tracing line on the charging system piping; fabricating a shield for and drumming a depleted polonium-beryllium source for shipnent; and installing a ring 'of packing on No.1 plunger of No.1 charging pump.

The major items of electrical and instrument maintenance included replacing a solenoid in the pressure protect assembly for radiation monito-ing channel RIC-1, RIC-2 and RIC-11; replacing an air regulator in, and cleaning the pneumatic control j system for the safety injection system; cleaning the air regulators and the pneumatic controller for pressurizer heater group No. 3; replacing the high voltage power supply 9110290177 910424 PDR FOIA DEKOK91-17 PDR 2. [

SNEC Operation Report for May 1966 . . . . . . . #2 in radiation monitoring channel A; calibrating the main coolant systm Heise pressure test gauge; sampling and testing the oil in the 1000 TVA main feed transformer; repairing the printer on the automatic sample changer in the count roem; replacing the G-M tubes in the labitrons located in the health physics office and in the chemistry

( laboratory; installing a new conductivity probe on the caustic regenerant tank in the make-up water treating system; replacing the filtez paper in the containment vessel radioactive particulate monitoring channels RIC-1 & RIC-ll; and repairing and calibrating pressure gauges in the sanpling system.

5. CHE!!ISTRY The main coolant cystem chemistry was maintained for power operating conditions throughout the month. The lithium concentration wrs varied in the range 0.011 p;n to 1.27 p;n for pH versus reactivity tests. The beron concentration was varied over the range 1135 ppm minimum up to 1225 ppm maximia. A summary of the analyses made on main coolant sanples taken during the monta is contained in the following table:

Main Coolant Systm Minimum Maximum pH at 25 C 5 15 6.45 Conductivity, unhos 3.56 21.0 Boron, ppm 1135 1225 Chlorides, p;n 4 .005 ' .005 Lithiun, ppn < 01 . 1.27 Potassium, p;n 4.01 4. 01 Sodium, p;n <.01 ( 01 0xygen, ppm <.00 <.005 Hydrogen, cc/kg H 2O 28 54.3 Crud, ppb 52.7 291 Gross Beta-Gamma (15 Min. Degassed) ue/cc 1.04 4.89 Gross Iodine, uc/cc 0 563 1.75 Tritium,ue/cc 0.18 0.23 The chlorides in the steam generator were maintained below 0.05 ppm. The average activity of the steam generator during the month was less than lx10-8 ue/cc.

6. RADIATION AND WASTE DISPOSAL Radiation surveying consisted of routine plant _ surveys, C.V. during shutdown and materials ehitnents. The following maxinum radiation readings were taken:

Incation Radiation Readinn C&A Building Waste Drum (baling machine) 5.0 mrem /hr_ beta-gamma Charging Pump (contact with chamber) 48 mrem /hr beta-gamma Sample Room (door of sample panel) 10 mrem /hr beta-gamma Chemical Inb Hot Sink (l" from drain) 3 0 mrem /hr beta-re m l

l

SNEC Operation Report for May_1966 . . . . . . . d3 Incation Radiation Headinc R1/DF f

Evaporator (under bottom) 130 mrem /hr beta-gama Evaporator (contact outside upper level) 38 mren/hr beta-gama Drum Storage Area (at HRA fence) 3.5 mrem /hr beta-gama l

Miscellaneous Shipnent of Samples, at contact - Shipment #1 80 mrem /hr beta-gama Shipaent of Samples, at contact S*'.paent #2 110 mrem /hr beta-ga.ma Seven Drums for Shipaent (max for any one drum) 80 mrea/hr beta-gamma Contanination surveying consisted of routine plant site surveys, surveys of materials shipped, tools, equignent and C.V. during shutdown. The clean areas were within the " Clean Area $ limits. The controlled areas were generally within the " Clean Area" linits. The controlled areas were cleaned frequently to keep and/or to return to the " Clean Area" linits. The exclusion areas were cleaned periodically to minirdce the a .ount of smearable contamination. The following contamination levels were observed:

Incation Contamination Reading C&A Building Charging Pump Chamber 62500 d/m/ smear beta-gama Charging Room Floor 1490 d/m/ smear beta-gamma Sample Room Floor 413 d/u/ smear beta-gamma Chenical Inb Hot Sink 234000 d/m/ smear beta-gama E"DF Pump Room Floor 1410 d/m/ smear beta-ganna Shipping Room Floor < 100 d/m/ smear beta-gama Liquid and gaseous effluents from the 6NEC site for the month of May 1966 were as follows:

(Curie) (Curie) (Curie)

Effluent Activity Activity Activity Type This Month Year to Date last Twelve Months Tritium 3.932000 5.188000 8.962000 Liquid 0.001368 0.007799 0.012478 Air, Xe 0.299563 20.431312 45.912539 Air, I-131 0.000000 0.005363 0.006893 Air, M. F.P. 0.002996 0.204315 0.459128 Thirteen (13) barrels of waste were drumaed for temporary storage. Seven (7) were shipped from the site.

, , , ,,,is . .i, - -

eration lleport f0P

NTc,

[',ny 10Op% .a . . . . . 2!! ...

}tadiation ex}onure for n31 S!O: personnel as measured t'y film 1adger. for the month of April 1966 were a nnxir.un of 265 nrun with an average of !%.1 tren.

ludiation exposure for all visiting personnel as measured by film badces for the month of April 1966 were a ravdnu'n of 0 nrtn with an average of 0 mrtn.

The average radiation ex;osure for all personnel as measured by film badres for the month of April 1966 was 13.7 nren.

l l

SAXTM NUCLEAR EXPE!!IMTNTAL CORPORATION OPERt. TING STATISTICS l!ONTH E:V YEAR 3966 UNIT 't!ONTH YFAR TO DATE NUC L*AR NO. 0 12 467 TIJEU CRITICAL 110VRS CRITICAL HRS. 74440 2,929 99 15,011.I2 NO. 0 11 273 TIliES SCRIEED (1%!!UAL)

NO. 0 1 30

  • T1}75 QCR/JED (INADVERTANT)

THFJdML PGTER GENEMTION Wil 17,420.16 62,267 86 271,517 69 AVERAGE I!JP) UP Core II Po Region E4!TU 1,421 96 5,082.74 5,144.46 CONTROL ROD PCG1TIONS AT D!D OF HONTH AT MUILIBRIUM POWER OF 2Lj) HWt "AIN 00)UdT BORON II48 7PH RODS OUT - INC103 No. 1 40 No. 2 26.60 NO. 3 to No. 4 40 No. 5 40 NO. 6 to ELECTRICAL @QT HONTH YEAR TO DATE GROSS ODIERATION lfdif 3,160.0 11,049.00 45,331.00 STATION SERVICE WH 244.05 1,092.91 9,295 20 STATION SERVICE  % 7 72 9.89 20.51 AVG. PIA!JT EFFICIDICY - Ifdll(o)/lfdH(t)  % 18.14 17.75 16.70 AVG. GENERATION RUNNING ( m.o NRS) __

pl 4,247 31 3,941.29 3,190.95 PIANT LOAD FACTOR -

(AVG. GEN. POR HONTHA%X. LDAD)  % 97.86 69 77 28.45 AUXILTARY STFAM SUPPLY NUCLEl.R STEAM SUPPIJED M REACTOR HRS. 744.0 2,847.36 12,546.33 imS. 35:34 869 34 2,930.59 EdDF EVAPONATOR OPERATION

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