ML19350C730
| ML19350C730 | |
| Person / Time | |
|---|---|
| Site: | 05000054 |
| Issue date: | 03/31/1981 |
| From: | UNION CARBIDE CORP. |
| To: | |
| Shared Package | |
| ML19350C726 | List: |
| References | |
| NUDOCS 8104060639 | |
| Download: ML19350C730 (4) | |
Text
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O ANNUAL REPORT FOR 1980 FOR THE UNION CARBIDE NUCLEAR REACTOR (UCNR)
DOCKET 50-54. LICENSE R-81 A. FACILITY M00lFICATION AND MAJOR MAINTENANCE
- 1. An auxiliary 45 kw emergency generator was installed and connected into our electrical system. This generator is a backup to our original f acility generator and will carry our vital ventilation loads in the event of a commercial power f ailure combined with a failure of the original facility generator.
- 2. A new primary pump suction line was installed from the hold-up tank to the primary pump. The original suction line, which was embedded in the concrete floor, was sealed off in the hold-up tank.
- 3. A new digital primary flow indicator was installed and calibrated. This replaced the original pneumatic flow recorder.
- 4. A reactor operator duress alarm was installed in the control room.
- 5. Two new " slave safety" amplifier chassis were added to our reactor instrumentation. These new ion chamber amplifiers have an improved power supply design and will increase our backup instrumentation inventory.
B. PROCEDURES MANUAL During 1980, a total review of all procedures in the Procedures Manual was conducted. All procedures were then placed into our site word processor computer system. The word processor system now has in permanent memory all
' pages of the Procedures Manual. Future procedural changes can now be handled expeditiously and accurately with the new system.
Two-new emergency plan procedures were incorporated into the manual. These procedures establish operator response to any unexplained intrusion or duress alarms.
A. new Effective Page Listing was incorporated to place an up-to-date listing of all official- pages into each manual. This listing will simplify our periodic manual reviews- to . insure that official ~ manuals include all pages of the most recent revision.
The above Procedures Manual revisions and other minor revisions not addressed here do not contain any unreviewed safety questions.
810i4069/A$
C. ORGANIZATIONAL CHANGES The following is the Union Carbide Corporation Reactor Administration Organization:
Business Manager Radiochemicals J.J. McGovern i
I l e Manager senior Development Nuclear Safeguarcs Manager Hea.tn, Safety Nuclear Operations Scientist Committee & Environmental Affairs M.H. Votn K.D.-George J.J. Agresta, Cnm. C.J. Konnertr.
I-Reactor Supervisor facility Engineer W.G. Ruzicua H.C. Hart
' Chief Reactor Operator R.A. 5 track Dr. Bollinger, formerly Vice President and General Manager of Nuclear Procucts, has left Union Carbide's Medical Prcoucts Division.
D.
SUMMARY
OF UNSCHEDULED SHUTDOWNS The'following is a listing of all unscheduled shutdowns occurring in 1980.
Consaercial Power Outage 12 False Signal 6 Log N 1 Safety Amplifier Equipment Failure' Causing 2 Safety Amplifiers Automatic Shutdown' 4 Rod Magnet 4 2 Log N 1 Log Count Rate Period 1 Failure of~ Area Radiation Monitor Causing False Period Signal 1 Loss of Primary Pump 4
Automatic Safety Action ~ l Primary Flow Stopped Above Initiated Allowed Power Setpoint Causing Automatic Scram; Operator Error-t
):
k.; }
Operator Initiated Manual 1 Ventilation System Failure Shutdown 1 Spot on Core 1 Loss of Log N Power Supply 1 Iog N Period Setpoint out of Adjustment 1 il Rod Reactivity Test Indicates No.Effect on Reactor In each case a determination of the cause of the shutdown was made and the prescribed corrective action taken. There is a continuing effort made to reduce the number of unscheduled shutdowns within cur control by preventative maintenance and equipment replacement.
E. POWER GENERATED Total power generated in 1980 was 39,822 megawatt hours. The reactor was operated on a seven day a week schedule with refueling and maintenance shutdowns about once every one or two weeks.
F. ROUTINE TESTS CONDUCTED All routine tests required in 1980 by the UCNR Technical Specifications have been performed as scheduled.
G. FUEL Thirty-eight fuel elements, containing aluminide -(U-A1x) fuel matric manufactured by CERCA (France), were received by the Union Carbide Nuclear Reactor in 1980. Seventy-two spent fuel elements were shipped to Savannah River, South Carolina for reprocessing.
l H. PERSONNEL RADIATION EXPOSURES Thirteen members of the Reactor Operations Staff and four Health Physics l Technicians. received exposures ir, excess of 25% of that allowed or recommended in 1980. These doses ranged from 1.28 rem to 3.91 rem with the overall average for these individuals being 2.28 rem.
l No visitors to the facility received exposuras greater than 25% of that allowed or recommended.
I. OFFSITE RELEASES OF RADIATION The following- is a summary -of the nature and amount of radioactive ef fluents fros' the reactor. facility released or discharged to the environs de termined - . at or before the . point ~ of release or discharge. The summary
'below-is for air and water discharges for the year of 1980.
U .-- ,
- t, -
- 1. Air Releases
- a. Noble Gases ,
Isotope Ouantity Released (Curies) 83m Kr 567.0 85m 1589.0 Kr ,
87 Kr 152.4 88 Kr 2067.9 133m 550.7 Xe
-133 y, 17522.6 135 y, 3558.9
'135 y, 9958.5 85 gp 3.6 Total Noble Gas release 35967 Ci Average Concentration of Noble Gases in Stack 4.8 x 10-5 uCi/cc ,
b.-Iodines Isotope Quantity Released (Curies) 125 g 1.82 Ci 131 g 1.52 Ci A/erage Concentration in Stack 125 g 2.4 x 10'9 uCi/cc 131 g 2.0 x 10 0 uCl/cc
- c. Particulate 5 mall quantities of activity found on the facility effluent samplers have beim identified as iodine-125 and daughters of noble gases. The average, concen$ ration of noble . gas daughters released in 1980 was .
5.35- x' .10-l uCi/cc. Gaseous- iodine-125 absorbed on the particulate filter averaged 'approximately 1% of the total iodine-125 releases shown-in the section above.
- 2. Water Releases Gross Beta Activity:- 0.0005 Ci
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