ML20085H152

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Monthly Operating Rept for Jan 1967 for Saxton Nuclear Experimental Corp
ML20085H152
Person / Time
Site: Saxton File:GPU Nuclear icon.png
Issue date: 01/31/1967
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SAXTON NUCLEAR EXPERIMENTAL CORP.
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Shared Package
ML20083L048 List: ... further results
References
FOIA-91-17 NUDOCS 9110280151
Download: ML20085H152 (6)
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SATI'0!! IJUCLEAR EXPERI!!EliTAL CORPORATION Operations Report for January 1967

1. RF.\CT3R OPERATIO!!S The reactor was operated at full power, 23 5 Mit, during the entire month of January in continuation of the test prograu to develop infomation concerning the utilication of plutonium enriched fuel in pressurized water reactors.

On January 26th a noise developed in nuclear instrumentation power range channel A. Ifnen it uno detemined that the trouble was located inside the containnent vessel, the channel was taken out of service. Reactor operation was continued in the

" single channel" mode (overpower on any one of the in service power range channels scrano the reactor).

During the month the main coolant boron concentration was reduced 79 ppm to conpensate for fuel depletion. The average burn-up in the core was calculated to be 7350 DID/MTF at the end of the month.

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2. EXPGIME! ITAL PROGRAM  !

A series of flux wire irradiations were conducted during the month to detemine the decay constant for the manganese impregnated iron wires. The decay constant detemined from the data of this series of tests, the theoretical decay constant, and that detemined from previous irradiations are as follows:

Decay Constant (min. ~1)

Theoretical 0.00448 Previous Detemination 0.00423 This Detemination 0.00458 Depletion follows made during the month indicate that the fuel darletion rate for a power level of 23 5 MWt is 0.026% Ak/k per day.

An all rods out main coolant boron concentration was detemined on January a 51st at a z cactor power level of 23.5 MWt, an average main coolant temperature of J10 F and at eluilibrium xenon. The boron concentration for these conditions was 643 ppm.

3. 0?ZRATIO!!AL TESTS The r.tdiation monitoring system circuits were tested on January _3rd.

On January 20th a nomal test of.the safety injection system was conducted.

4, MAI!!TEllANCE The principal items of mechanical maintenance during the month included disassembling and cleaning the valves on the instrument air compressor; cleaning check valves in the instrument air system; tightening the flanges on the RWDF evaporator; installing a new steam line to the heating coils in the monitor tanks; building a new lead shield to house the detector for the gamma spectrometer; replacing the discs in the isolation valves for RWDF gas decay tank No.1; installing a new fan belt on the sewage

, system chlorine addition pump; removing the weeds from the sewage system filter beds; l

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SNE0 Operations Report for January 1967 . . . . . #2 fabricating a neu support for the storage well skimmer; installing a new drive belt on charging punp No.1; installing new heating coils in RWDF liquid discharge tanks No.1 and No. 2; acid cleaning the drain line on the MIDF compressor suction manifold; processing twelve drums of evaporator bottoms; steam cleaning the RUDF evaporator drain line; repairing a valve in the sample panel; repairing the vacuum pumps for four environmental air samplers; and checking the gas pressure in the accumulator on the discharge of the charging punps.

The major itens of electrical and instrument maintenance included calibrating the 1cvel transmitter en 51DF discharge tank No.1; replacing the filter paper in the containment vessel air particulate monitors, RIC-1 and RIC-ll; calibrating the pressure transmitter on the ElDF evaporator denister; replacing a circuit brecher in the lighting panel for RUDF; calibrating the discharge pressure gauges on No.1 and No. 2 charging pumps; repairing the power supply for the lights on the underwater periscope; replacing the conductivity cell in tne sample line for the steam generator secondary water; repairing the flow meters for the air samplers in two environmental survey stations; repairing the conductivity recorder on the water treating panel; cleaning the totalicing meter in the steam generator blowdown; replacing a motor in an office air conditioner; repairing the intemediate rance recorder in the nuclear instrumentation system; repairing the seslers for two counting systems in the count room; repairing the feedback arm on the controller for the main steam PRV valve; repairing the gear train in the source range recorder in the nuclear instrumentation system; repairing and adjusting the vacuum regulating valves on MIDF cas compressors No.1 and No. 2; repairing the computer-indicator for the MIDF liquid effluentmonitor, radiation monitoring channel RIC 6; cleaning and checking the d/p cell in the RWDF evaporator hotwell level control channel; calibrating a temperature indicator on the deaerator in the secondary system; and cleaning the controller on the steam adnission valve to the deaerator.

5 CHEISTRY The main coolant system chemistry was maintained for power operation throughout the month. The lithium concentration was _ varied in the range of less than 0.01 pm to 0.255 ppm. The boron concentration was varied over the range 584 pp minimum to 720 ppm maxinum. A summary of the analyses made on the main coolant samples taken during the month is contained in the following table:

Main Coolant System Minimum Maximum pH at 25 C 5.44- 6.44 l Conduetivity,.umhoa 2.62 8.33 Boron, p p 584 720 l Chlorides, ppm <,0.005 4.0.005 lithium, ppm 0.01 0.255 hydrogen, cc/kg H 2O 18.0 54.0 i Gross Beta-Gacna (15 Min. Degassec) uc/cc 1.77 5.21 l Tritium,ue/cc _0.169 0.229 The decontamination factor for the purification system was detemined to be 11.1.

The chlorides in the steam generator secondary side were maintained below 0.250 ppm during the month.

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SEC Operations Report for Januer" 1467_. 0 ... #3 At three different times during the month tritium activity in the rance of 10-3 ue/cc was detected in the steam generator secondary system. The source of the tritium was traced to defective steam heating coile in the ILOF discharge tanks. Water which normally contains tritium in the range of 10-1 ue/cc was entering the condensate I eystem through breaks in the heating coils and was being carried to the secondary system.

The tritium problera was eliminated after the heating coils in both tanks were renewed.

6. MDIATIO: A!!D UASTE DISPOSAL Radiation surveying consisted of 1outine plant surveys and materials shipments.

The following maximum radiation readings were taken location Radiation Readinn C&A Buildinn Waste Drum (baling machine) 5.0 mrem /hr beta-ga:2na (contact with chanber) .,6 mrara/hr beta-ganraa Charging Sample RoomPump (door of sample panel) 3 0 mrem /hr beta gamma Chemical lab Hot Sink (l" from drain) 5 5 mrem /hr beta-gamma RUDF Evaporator (under bottom) 300 mrem /hr beta-gamma Evaporator (contact outside upper level) 160 mrem /hr beta-gamma Drum Storage Area (at HRA fence) 18 nrem/hr beta-gamma Contamination surveying consisted of routine plant site surveys, surveys of materials shipped, tools and equipaent. The clean areas were within the " Clean Area" limits. The controlled areas were generally within the " Clean Area" limits. The controlled area was cleaned frequently to keep and/or to return it to the " Clean Area" limits. The exclusion areas were cleaned periodically to minimize the amount of smearable contamination. The following contamination levels were observed:

Incation Contamination Readinn C&A Buildinn Charging Pump Chamber L2640 d/m/ smear beta-gt.mma Charging Pump Chamber < 10 d/m/ smear alpha Charging Room Floor 1240 d/m/ smear beta-gamma Sample Room Floor 4100 d/m/snear beta-ganma Chemical Lab Hot Sink 308460 d/m/ smear beta-gamma Chemical lab Hot Sink 410 d/m/ smear alpha R\mF Pump Room Floor 2990 d/m/ smear beta-gamma Shipping Room Floor 250 d/m/ smear beta-gamma

S!GC Operations lleport for Janunn 1967 . . . . . #4 Liquid and gaseous effluen*,e from the S!EC site for the month of Janualy 1967 were as follows:

(Curie) (Curie) (Curie)

Effluent Activity Activity Activity Tvne This Month Year to Date hyt Twelve Monthe Tritium 1.842971 1.842971 24.837586 Liquid 0.0036J7 0.001807 0.015351 Air, Xe 0.407278 0.407278 110.921740 Air, I-131 0.000019 0.000019 0.152875 Air, H.F.P. 0.00407) 0.004073 1.109217 Gixteen (16) barrels of waste were drummed for temporary stor Twenty-eight druns were shipped l' rom the site.

Radiation exposure for all S!iEC personnel as measured by film badges for the month of December 1966 were a unximum of 480 mran with an average of 38 31 mrem.

Radiation exposure for all visiting personnel as measured by film badges for the month of De9 ember 1966 were a maximum of 0.0 mrem with an average of 0.0 mrers.-

The average radiation exposure for all personnel as measured by film badges-for the nonth of Deceber 1966 was 38.31 mrem.

SAXTm NUCLFXd FXPERIMERTAL CORPG.tATION

, OP2 RATING STATISTICS MONTH JANUAHI YEAR 1967 E9EA.B P!G.I BW.I.!! 1568 70 DA75 TIMES CRITICAL NO. 0 0 495 HOURS CRITICAL HRS. 744 744 19,606 95 TIMES SCRAMKED (MAWAL) NO. 0 0 291

  • TIMES QCRAMMED (IMAMERTANT) NO. 0 0 31 THERNAL POWER GERERATION .fWH 17,423 52 u,J3 52 357,508 39 AVERAGE RJRWP (Pu Begian) WDMN 1,422.23 1,M2.23 12,444.03 CONTROL ROD PWITIG48 AT IND OF MONTH AT IQUILIIRIUM PCWER OF 23 5 *t MAIN 0001MT BORON 58& P!W RODS OUT - INCHES NO.1 40 NO. 2 27 5 No. 3 40 No. 4 40 No. 5 40 Wo. 6 40 ,

E!ECMICAL pMIT MONTS g 70 DATE GROSS OENERATION MH 3,321.00 3,321.00 60,796.00 1 STATION SERVICE MWH 242,28 242.28 10, % 47 87ATION SERVICE $ 7 30 7 30 M.03 AVO. PIANT EFFICIMCY - WH(e)/WH(t)  % 19 06 19 06 17 01 AVO. GENERATION RJNNING ( 744 HRS) W 4,463 71 4,463.71 3,) m 95 PIANT IDAD FACTOR -

(AVO. GEN. FOR MONTH / WAX. IDAD)  % 98 32 98 32 31.81 AUXIUARY STEAM SUPPLY - NUCIEAR STRAM SUPPUED Bf REACTOR HRS.  % 00  % 00 16.2 A 25 WDF EVAPmATOR OPERATION HRS. 596.00 596.00 4,512.08

  • REMARKS:

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