Effluent Water Temperature Monitoring

The stepping relays select the transducers in reactor format 

An Interim Linear Power Rate-of-Rise System operates from 10 RTD s distributed In a uniform pattern over the rear face of the reactor. The circuit averages the signals of the RTD s to show an average linear Increase or decrease In power level In megawatts per minute. This system has numerous disadvantages which are being resolved through development effort for a final system. 

Zone Temperature Monitoring Systems were Installed under Project OCI-666 at the six old reactors to provide safety circuit action for hotspot control. This system Is composed of RTD s (resistance temperature detectors) controllers, and a visual readout display. The RTD s measure the temperature of the outlet water from the center process tube of a 3 by 3 tube cell or zone. A special wye fitting was installed between the spiral connector and the Parker fitting to house the RTD. 

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The feed flow rates and the reactor and bath temperatures were monitored at five minute intervals. After five to six residence times, two samples of the reactor effluent were collected in 50 ml Erlenmeyer flasks containing approximately 20 ml of benzene saturated with water. Sufficient polymer solution was collected to give a 3.0 weight percent polymer solution. The samples were... 

The 2,4-dinitrophenylhydrazone derivatives of a-ketoisovaleric acid and a-keto-jS-methylvaleric acid are separated from 2,4-dinitrophenylhydrazine by chromatography at room temperature on a Zorbax Cjg column (4.6 mm x 250 mm). Solvent A was 25% acetonitrile in water containing 0.1% triethyla-mine (v/v) and adjusted to pH 4.5 with acetic acid. Solvent B was acetonitrile. A linear gradient from 20 to 50% B was made within 20 minutes. The effluent was monitored at 254 nm. 

Sample preparation 3 mL Plasma 30 p,L 10 p,g/mL triazolam in water, mix 1 min, allow to stand for 15 min at room temperature, add to 3 mL Extrelut SPE cartridge and allow to soak in for 10 min, elute with 20 mL dichloromethane. Evaporate eluant at 30° under reduced pressure, take up residue in 1 mL MeCN water 5 95, stand for 15 min, centrifuge at 14000 g for 2 min, remove supernatant. Iiyect a 250 p,L aliquot of the supernatant onto column A with mobile phase A and elute to waste. After 7 min forward flush the contents of column A onto column B with mobile phase B. After 0.47 min remove column A from the circuit and elute column B with mobile phase B, monitor the effluent from column B. When not in use, flush column A with mobile phase A. Between iiyections clean column A with two injections of 250 p.L MeCN. 

Sample preparation Plasma. 1.5 mL Blood + 50 xL 100 mM ascorbic acid and 100 mM disodium ethylenediaminetetraacetate, centrifuge. Remove 0.5 mL plasma and immediately add it to 50 (jiL 1 mg/mL p-bromophenacyl bromide, vortex 30 s, let stand at room temperature for 20 min, add 300 p.L 6% perchloric acid, vortex for 30 s, centrifuge at 10000 g for 10 min, inject a 500 j,L aliquot onto column A with mobile phase A and elute to waste, after 3 min elute the contents of column A onto column B with mobile phase B, after 2 min remove column A, elute column B with mobile phase B, monitor the effluent from column B. Urine. 50 p,L Urine + 50 jiL 1 mg/mL p-bromophenacyl bromide + 600 pL water, vortex 30 s, let stemd at room temperature for 20 min, inject a 500 p.L aliquot onto column A with mobile phase A and elute to waste, after 3 min elute the contents of column A onto coliunn B with mobile phase B, after 2 min remove column A, elute coliunn B with mobile phase B, monitor the effluent from column B. (Colmnn A should be washed with MeOH for 2 min then re-equilibrated with mobile pheise A for 2 min.)... 

Sample preparation Condition an immobilized antibody column (preparation details in paper) with 4 mL water, 4 mL MeOH water 80 20, and 4 mL PBS. Add 1 mL plasma to the column, let stand for 15 min, wash with two 4 mL portions of water, wash with 4 mL PBS, wash with two 4 mL portions of water, elute with 4 mL MeOH. Add 100 pL 100 ng/mL IS in water to the eluate, evaporate to drjmess, reconstitute with 100 pL DMF, add 100 pL 47.6 pg/mL triethylamine in dioxane (Caution Dioxane is a carcinogen ), add 100 pL 51.8 pL/mL diethyl phosphorocyanidate in dioxane, add 100 pL 100 pg/mL N-dansylethylenediamine (Molecular Probes, Inc., Eugene OR) in dioxane, stir for 10 s, let stand at room temperature for 10 min, inject a 10 pL ahquot onto column A and elute to waste with mobile phase A. After 7.5 min elute the contents of column A onto column B with mobile phase B. After 2.5 min remove column A from the circuit. Elute column B with mobile phase B and monitor the effluent from column B. 

A new RPV level indication system based on temperature sensors detecting the differential heat transfer from sensor to water and to steam is being developed. An effluent monitoring system for accident conditions is also planned to be installed. 

I monitored progress by looking at both the process and water effluent temperatures on the hydrotreater cooler. 

Instrumentation should be installed to provide an alarm signal in ca.se of high bed temperature. Carbon monoxide monitoring of the effluent gas is also useful to detect the occurrence of oxidation. The alarms should activate systems that deluge the bed with water, isolate the affected vessel, and shut down appropriate equipment. 

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