ML052550176
| ML052550176 | |
| Person / Time | |
|---|---|
| Site: | Rhode Island Atomic Energy Commission |
| Issue date: | 08/31/2005 |
| From: | Marlone Davis State of RI, Atomic Energy Comm, Nuclear Science Ctr |
| To: | Hughes D Division Reactor Projects III, NRC/RGN-IV/DRP |
| References | |
| FY 04/05 | |
| Download: ML052550176 (20) | |
Text
-J STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS RHODE ISLAND ATOMIC ENERGY COMMISSION Rhode Island Nuclear Science Center 16 Reactor Road Narragansett, RI 02882-1165 August 31, 2005 Docket No. 50-193 Mr. Daniel Hughes, Project Manager Non-Power Reactors, Decommissioning and Environmental Project Directorate Division of Reactor Projects -III/IV/V U. S. Nuclear Regulatory Commission (NRC)
Washington, D. C. 20555
Dear Mr. Hughes:
This letter and enclosures constitute the annual report required by the RINSC Technical Specifications (Section 6.8.4). Enclosure I provides reactor operating statistics. Enclosure 2 provides information pertaining to inadvertent reactor shutdowns or scrams. Enclosure 3 discusses maintenance operations performed during the reporting period. Enclosure 4 describes changes to the facility carried out under the conditions of Section 50.59 of Chapter 10 of the Code of Federal Regulations. Lastly, Enclosure 5 summarizes the radiological controls information. If there are any questions regarding this information, please call me at 401-789-9391.
Sincerely, Michael J. Davis Reactor Supervisor Enclosures (5)
Copy to:
Mr. Craig Bassett, USNRC Region I Dr. Harry Knickle, Chairman NRSC Dr. Stephen Mecca, Chairman RIAEC Dr. Alfred L. Allen, RIAEC Dr. Peter Gromet, RIAEC Dr. Andrew Kadak, RIAEC Dr. Bahram Nassersharif, RIAEC
Rhode Island Nuclear Science Center Annual Report FY 04/05
ENCLOSURE I Technical Specifications Section 6.8.4.a (01-02)
Reactor Energy Energy Critical Generated Generated Month (hours)
(MWh)
(MWd)
July-04 29.42 58.83 2.45 August-04 42.90 56.57 2.36 September-04 16.60 33.24 1.39 October-04 15.33 30.66 1.28 November-04 17.15 33.98 1.42 December-04 47.48 94.73 3.95 January-05 89.40 178.80 7.45 February-05 93.75 187.50 7.81 March-05 79.20 157.98 6.58 April-05 14.03 28.07 1.17 May-05 31.70 60.50 2.52 June-05 29.20 58.40 2.43 2004-05 Totals:
506.16 979.26 40.80 4
4 Total Energy Output Since Initial Criticality:
60,019.91 2,500.83
f I
ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet I Month:
Ju1-2004 1, I Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU Start:
59,040.651 l End: l 59,099.491 9,392.07 l
- added HEU=49698.01 Run Ave Pwr Start SID Operating Todays Stack Ar-41 Released No.
Day Level Time Time Time total Monitor Limit = 4E-4 uCVcc (1-31)
(MW)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uC/cc CMday 7736 1
2.00 1126 1426 3.00 6.00 7,000 2.13E-05 0.84 7737 6
2.00 1037 1337 3.00 6.00 7,000 2.13E-05 0.84 7738 8
2.00 1020 1320 3.00 6.00 6,000 1.82E-05 0.84 7739 13 2.00 1122 1422 3.00 6.00 8,000 2.43E-05 0.84 7740 15 2.00 1103 1403 3.00 6.00 5,000 1.52E-05 0.84 7741 20 2.00 1052 1352 3.00 6.00 5,000 1.52E-05 0.84 7742 22 2.00 1032 1332 3.00 6.00 5,000 1.52E-05 0.84 2.00 1410 1708 2.97 5.93 5,000 1.52E-05 0.83 7743 27 2.00 1010 1157 1.78 3.57 5,000 1.52E-05 0.50 7744 29 2.00 1018 1358 3.67 7.33 5,000 1.52E-05 1.03 Totals:
29.42 58.83 8.24 SUMMAR Operating Max.
Actual Max. [
Actual Hours 154.0 29.4 MWH's:
308.0 58.8 Percentage 19%
19%
Stack Releases 8.2 curies
r I
ENCLOSURE ]
(Continued)
NSC-78 Monthly Information Sheet IMonth: Au9-2004l l Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU Start:
59,099.491 l
End:
159,156.051 9,448.63
_added HEU=49698.01 Run Ave Pwr Start SID Operating Todays Stack Ar-41 Released No.
Day Level Time Time Time total Monitor Limit = 4E-4 uCl/cc (1-31)
(MW)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCVcc CMday 7745 3
2.00 1012 1312 3.00 6.00 5,000 5.55E-05 0.84 7746 5
2.00 1006 1306 3.00 6.00 5,000 5.55E-05 0.84 7747 10 2.00 1032 1332 3.00 6.00 6,000 6.66E-05 0.84 7748 12 2.00 1015 1315 3.00 6.00 5,000 5.55E-05 0.84 7749 13 1443 1554 1.18 200 2.22E-06 7750 16 1337 1639 3.03 400 4.44E-06 7751 17 2.00 1011 1205 1.90 3.80 5,000 5.55E-05 0.53 7752 18 1108 1341 2.55 3,500 3.89E-05 7753 19 2.00 1030 1330 3.00 6.00 5,000 5.55E-05 0.84 7754 24 2.00.
1025 1325 3.00 6.00 5,000 5.55E-05 0.84 7755 26 2.00 1154 1600 4.10 8.20 5,000 5.55E-05 1.15 7756 27 1054 1630 5.60 450 5.OOE-06 7757 30 1145 1400 2.25 400 4.44E-06 7758 31 2.00 1005 1422 4.28 8.57 5,000 5.55E-05 1.20 Totals:
42.90 56.57 7.92
SUMMARY
Operating Max.
Actual Max.
Actual Hours 1470 42.9 MWH's:
294.0 56.6 Percentage 29%
1 9%
Stack Releases
II ENCLOSURE 1 (Continued)
NSC-78 Monthly Information Sheet Month: Sep-2004 Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU Start:
59,156.05 l
End:
159,189.291 9,481.87
- added HEU=49698.01 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Released No.
Day Level Time Time Time total Monitor Limit = 4E-4 uClcc (1-31)
(MW (hhmm)(hhmm)
(hrs)
MWH max CPM uClcc Cl/day 7759 7
2.00 1222 1532 3.17 6.33 7,000 2.13E-05 0.89 7760 9
2.00 1017 1326 3.15 6.30 11,000 3.34E-05 0.88 7761 13 2.00 1028 1100 0.53 1.07 15,000 4.56E-05 0.15 7762 14 2.00 1008 1308 3.00 6.00 8,000 2.43E-05 0.84 7763 16 2.00 1010 1112 1.02 2.04 6,000 1.82E-05 0.29 7764 21 2.00 1036 1116 0.67 1.33 7,000 2.13E-05 0.19 7765 22 7766 23 2.00 1012 1120 1.13 2.27 7,000 2.13E-05 0.32 7767 28 2.00 1043 1343 3.00 6.00 7,000 2.13E-05 0.84 7768 30 2.00 1015 1112 0.95 1.90 7,000 2.13E-05 0.27 Totals:
=
==
16.62 33.24
=
=
4.65
SUMMARY
Operating Max.
Actual Max.
Actual Hours 147.0 16.6 MWH's:
294.0 33.2 Percentage 11%
11%
I ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet Month: Oct-2004 Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU I Start: 59,189.291 I
End:
159,219.951 9,512.53
- added HEU=49698.01 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Released No.
Day Level Time Time Time total Monitor Llmit = 4E14 uCIcc (1.31)
(MW)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uC/cc MClday 7769 5
2.00 0956 1056 1.00 2.00 8,000 2.43E-05 0.28 7770 7
2.00 0958 1050 0.87 1.73 10,000 3.04E-05 0.24 7771 12 2.00 0923 1200 2.62 5.23 11,000 3.34E-05 0.73 7772 14 2.00 0915 1135 2.33 4.66 8,000 2.43E-05 0.65 7773 19 2.00 1008 1308 3.00 6.00 8,000 2.43E-05 0.84 7774 21 2.00 1052 1402 3.17 6.33 7,000 2.13E-05 0.89 7775 26 2.00 0958 1142 1.73 3.47 11,000 3.34E-05 0.49 7776 28 2.00 0956 1033 0.62 1.23 10,000 3.04E-05 0.17 Totals:
15.33 30.66 4.29
SUMMARY
Operating Max.
Actual Max.
Actual Hours 154.0 15.3 MWH's:
308.0 30.7 Percentage 10%
10%
Stack Releases j
I ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet Month: Nov-2004 Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU I Start:
59,219.951 I
End:
159,253.931 9,546.51 1
- added HEU=49698.01 Run Ave Pwr Start SID Operating Todays Stack Ar-41 Released No.
Day Level Time Time Time total Monitor Limit = 4E-4 uCUcc (1-31)
(MW)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uC/cc Clday 7777 1
1037 1039 0.03 1,000 3.04E-06 T 7778 4
2.00 1025 1325 3.00 6.00 10,000 3.04E-05 0.84 7779 8
0.10 1033 1034 0.02 0.00 1,000 3.04E-06 0.00 7780 9
2.00 1000 1300 3.00 6.00 10,000 3.04E-05 0.84 7781 12 2.00 0950 1113 1.38 2.77 10,000 3.04E-05 0.39 7782 16 2.00 1013 1113 1.00 2.00 10,000 3.04E-05 0.28 7783 17 2.00 1010 1134 1.40 2.80 10,000 3.04E-05 0.39 7784 18 2.00 1013 1122 1.15 2.30 10,000 3.04E-05 0.32 7785 23 2.00 0957 1300 3.05 6.10 10,000 3.04E-05 0.85 7786 29 0.10 1053 1100 0.12 0.01 1,000 3.04E-06 0.00 7787 30 2.00 1015 1315 3.00 6.00 10,000 3.04E-05 0.84 Totals:
17.15 33.98 4.76
SUMMARY
Operating Max.
Actual Max.
Actual Hours 133.0 17.2 MWH's:
266.0 34.0 Percentage 13%
13%
Stack Releases 4.8 curies
- 1.-
ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet Month: Dec-2004 Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU I Start:
59,253.931 I End:
l 59,348.661 9,641.24 l
- added HEU=49698.01 Run Ave Pwr Start SID Operating Todays Stack Ar-41 Released No.
Day Level Time Time Time total Monitor Limit = 4E-4 uCI:cc
_(1-31)
(MW)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCVcc MCday 7788 1
2.00 0941 1500 5.32 10.63 10,000 3.04E-05 1.49 7789 2
2.00 1006 1306 3.00 6.00 9,000 2.74E-05 0.84 7790 6
0.20 0940 0948 0.13 0.03 1,000 3.04E-06 0.00 7791 7
2.00 0947 1247 3.00 6.00 10,000 3.04E-05 0.84 7792 13 2.00 0941 1647 7.10 14.20 10,000 3.04E-05 1.99 7793 20 2.00 1048 1658 6.17 12.33 10,000 3.04E-05 1.73 7794 21 2.00 1040 1340 3.00 6.00 10,000 3.04E-05 0.84 7795 24 2.00 1001 1631 6.50 13.00 10,000 3.04E-05 1.82 7796 28 2.00 0947 1247 3.00 6.00 10,000 3.04E-05 0.84 7797 29 2.00 0927 1643 7.27 14.53 10,000 3.04E-05 2.03 7798 30 2.00 1004 1304 3.00 6.00 10,000 3.04E-05 0.84 Totals:
47.48 94.73 13.26
SUMMARY
Operating Max.
Actual I_ Max.
Actual Hours 154.0 47.5 MWH's:
308.0 94.7 Percentage 31%
1 31%
Stack Releases 13.3 curies I
ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet Month:
Jan-05 Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU l Start: 59,348.661 l End:
l 59,527.46 9,829.45
- added HEU=49698.01 Run Ave Pwr system Start S/D Operating Todays Stack Ar-41 Released No.
Day Level On Time Time Time Time total Monitor LImit = 4E.4 uCIcc (1-31)
(MW)
(hhmm)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCVcc MCday 7799 4
2.00 0950 0950 1250 3.00 6.00 10,000 3.04E-05 0.84 7800 6
2.00 0940 0940 1240 3.00 6.00 10,000 3.04E-05 0.84 7801 7
2.00 0926 0926 1629 7.05 14.10 15,000 4.56E-05 1.97 7802 10 2.00 1015 1015 1622 6.12 12.23 10,000 3.04E-05 1.71 7803 11 2.00 0945 0945 1245 3.00 6.00 10,000 3.04E-05 0.84 7804 12 2.00 0924 0924 1639 7.25 14.50 10,000 3.04E-05 2.03 7805 1 3 2.00 0943 0943 1243 3.00 6.00 9,000 2.74E-05 0.84 7806 14 2.00 0935 0935 1659 7.40 14.80 9,000 2.74E-05 2.07 7807 18 2.00 0954 0954 1520 5.43 10.87 10,000 3.04E-05 1.52 7808 19 2.00 0939 0939 1647 7.13 14.27 10,000 3.04E-05 2.00 7809 20 2.00 1016 1016 1316 3.00 6.00 10,000 3.04E-05 0.84 7810 21 2.00 0927 0927 1637 7.17 14.33 10,000 3.04E-05 2.01 7811 25 2.00 1030 1030 1330 3.00 6.00 10,000 3.04E-05 0.84 7812 26 2.00 1014 1014 1642 6.47 12.93 10,000 3.04E-05 1.81 7813 27 2.00 0958 0958 1258 3.00 6.00 11,000 3.34E-05 0.84 7814 28 2.00 0931 0931 1635 7.07 14.13 11,000 3.34E-05 1.98 7815 31 2.00 0936 0936 1655 7.32 14.63 10,000 3.04E-05 2.05 Totals:
89.40 178.80
=
25.03
SUMMARY
Operating Max.
Actual l Max.
I Actual Hours 147.0 89.4 J MWH's:
294.0 l 178.8 Percentage 61%
161%
Stack Releases 25.0 curies j
ENCLOSURE I (Continued)
NSC-78 IMonth:
Feb-05IMotlInom inSheI Revised 3/22120041 Cumulative MWH's TOTAL NSC-78 LEU I Start: 59.527.461 I End: 159,714.961 10,016.951
- added HEU=49698.01 Run Ave Pwr System Start SID Operating Todays Stack Ar-41 Released No.
Day Level On Time Time Time Time total Monitor Limit = 4E-4 uCicc (1-31)
(MW)
(hhmm)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCicc Clday 7816 1
2.00 1021 1021 1321 3.00 6.00 10,000 3.04E-05 0.84 7817 2
2.00 0935 0935 1719 7.73 15.47 10,000 3.04E-05 2.17 7818 3
2.00 0942 0942 1042 1.00 2.00 10,000 3.04E-05 0.28 7819 4
2.00 0936 0936 1645 7.15 14.30 10,000 3.04E-05 2.00 7820 7
2.00 0923 0923 1419 4.93 9.87 10,000 3.04E-05 1.38 7821 9
2.00
.0941 0941 1711 7.50 15.00 10,000 3.04E-05 2.10 7822 10 2.00 0938 0938 1624 6.77 13.53 10,000 3.04E-05 1.89 7823 11 2.00 1122 1122 1723 6.02 12.03 10,000 3.04E-05 1.68 7824 14 2.00 1015 1015 1125 1.17 2.33 10,000 3.04E-05 0.33 7825 15 2.00 0945 0945 1245 3.00 6.00 10,000 3.04E-05 0.84 7826 16 2.00 0938 0938 1550 6.20 12.40 10,000 3.04E-05 1.74 7827 17 2.00 0942 0942 1545 6.05 12.10 10,000 3.04E-05 1.69 7828 18 2.00 0849 0849 1545 6.93 13.87 10,000 3.04E-05 1.94 7879 22 2.00 1031 1031 1159 1.47 2.93 10,000 3.04E-05 0.41 7830 23 2.00 1038 1038 1712 6.57 13.13 10,000 3.04E-05 1.84 7831 24 2.00 1036 1036 1653 6.28 12.57 10,000 3.04E-05 1.76 7832 25 2.00 1053 1053 1639 5.77 11.53 10,000 3.04E-05 1.61 7833 28 2.00 1042 1042 1655 6.22 12.43 10,000 3.04E-05 1.74 Totals:
93.75 187.50 26.25
SUMMARY
Operating Max.
Actual l Max.
Actual J Hours 140.0 93.8 MWH's:
280.0 1 187.5 Percentage 167% 1 67%
Stack Releases 26.3 curies
I ENCLOSURE 1 (Continued)
NSC-78 Monthly Information Sheet iMonth:
Mar-05 I I Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU Start: 59,714.96 End:
159,872.94 10,165.52
- added HEU=49698.01 Calibration Factor = 0.000449 Run Ave Pwr system Start SID Operating Todays Stack Ar-41 Released No.
Day Level On Time Time Time Time total Monitor Limit = 4E-4 uC/cc (1-31)
(MW)
(hhmm)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uC/cc Cilday 7834 1
2.00 1126 1126 1715 5.82 11.63 10,000 3.04E-05 1.27 7835 8
2.00 0921 0921 1647 7.43 14.87 10,000 4.49E-05 2.40 7836 9
2.00 0945 0945 1648 7.05 14.10 10,000 4.49E-05 2.28 7837 10 2.00 0955 0955 1700 7.08 14.17 10,000 4.49E-05 2.29 7838 11 2.00 0932 0932 1725 7.88 15.77 9,000 4.04E-05 2.29 7839 14 2.00 0923 0923 1526 6.05 12.10 10,000 4.49E-05 1.96 7840 15 2.00 0950 0950 1715 7.42 14.83 9,000 4.04E-05 2.16 7841 16 2.00 0955 0955 1712 7.28 14.57 9,000 4.04E-05 2.12 7842 1 7 2.00 1200 1200 1230 0.50 1.00 8,000 3.59E-05 0.13 7843 18 2.00 1037 1037 1720 6.72 13.43 9,000 4.04E-05 1.95 7844 21 2.00 1009 1009 1308 2.98 5.97 9,000 4.04E-05 0.87 7845 22 2.00 1032 1032 1217 1.75 3.50 8,000 3.59E-05 0.45 7846 23 2.00 0926 0926 1629 7.05 14.10 9,000 4.04E-05 2.05 7847 24 2.00 0930 0930 1055 1.42 2.83 9,000 4.04E-05 0.41 7848 29 2.00 0950 0950 1140 1.83 3.67 9,000 4.04E-05 0.53 7849 30 0.06 1116 1116 1122 0.10 0.01 600 2.69E-06 0.00 7850 30 0.06 1343 1343 1350 0.12 0.01 700 3.14E-06 0.00 7851 31 2.00 0912 0912 0955 0.72 1.43 10,000 4.49E-05 0.23 Totals:
79.20 157.98
==
23.41
SUMMARY
Operating Max.
Actual I Max.
Actual Hours 147.0 79.2 MWH's:l 294.0 158.0 Percentage 54%
54%_
Stack Releases 23.4 curies
ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet I Month:
Apr-05 I I Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU I Start: 59,872.941 I End: 159,901.011 10,193.59 l
- added HEU=49698.01 Run Ave Pwr System Start S/D Operating Todays Stack Ar-41 Released No.
Day Level On Time Time Time Time total Monitor Limit = 4E-4 uCicc (1-31)
(MW)
(hhmm)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCUcc MCday 7852 5
2.00 0925 0925 0928 0.05 0.10 5,000 2.25E-05 0.01 7853 7
2.00 0930 0930 1125 1.92 3.83 9,000 4.04E-05 0.54 7854 12 2.00 0930 0930 1115 1.75 3.50 9,000 4.04E-05 0.49 7855 14 2.00 0945 0945 1345 4.00 8.00 9,000 4.04E-05 1.12 7856 19 2.00 0942 0942 1100 1.30 2.60 9,000 4.04E-05 0.36 7857 21 2.00 0945 0945 1054 1.15 2.30 9,000 4.04E-05 0.32 7858 26 2.00 1005 1005 1045 0.67 1.33 9,000 4.04E-05 0.19 7859 28 2.00 0945 0945 1257 3.20 6.40 9,000 4.04E-05 0.90 Totals:
I 14.03 28.07 3.93
SUMMARY
Operating Max.
Actual Max.
Actual Hours 154.0 14.0 MWH's:
308.0 28.1 Percentage 9%
9%
Stack Releases 3.9 curies I
ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet I Month:
May-05 I I Revised 3/22t2004 Cumulative MWH's TOTAL NSC-78 LEU I Start: 59,901.011 I
End:
l 59,961.-51 1 10,254.09 l
- added HEU=49698.01 Run Ave Pwr System Start S/D Operating Todays Stack Ar-41 Released No.
Day Level On Time Time Time Time total Monitor Limit = 4E-4 uCIcc (1-31)
(MW)
(hhmm)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCi/ce Clday 7860 3
2.00 0955 0955 1200 2.08 4.17 9,000 4.04E-05 0.58 7861 5
2.00 1012 1012 1050 0.63 1.27 9,000 4.04E-05 0.18 7862 9
2.00 0908 0908 1108 2.00 4.00 9,000 4.04E-05 0.56 7863 10 2.00 0930 0930 1441 5.18 10.37 9,000 4.04E-05 1.45 7864
.12 2.00 1150 1150 1530 3.67 7.33 8,000 3.59E-05 1.03 7865 17 2.00 0945 0945 1245 3.00 6.00 8,000 3.59E-05 0.84 7866 18 1.00 1317 1317 1611 2.90 2.90 8,000 3.59E-05 0.41 7867 19 2.00 1000 1000 1300 3.00 6.00 10,500 4.71 E-05 0.84 7868 20 2.00 1121 1121 1435 3.23 6.47 10,500 4.71E-05 0.91 7869 24 0.00 1000 1000 1000 0.00 0.00 0.00 O.OOE-05 0.00 7870 26 2.00 0939 0939 1239 3.00 6.00 9,000 4.04E-05 0.84 7871 31 2.00 1030 1030 1330 3.00 6.00 10,000 4.49E-05 0.84 Totals:
31.70 60.50 8.47 Operating
SUMMARY
Hours Max.
Actual ll Max.
I Actual Percentage 147.0 31.7 MWH's:
294.0 60.5 Stack Releases 22%
21%
l 8.5 curies
ENCLOSURE I (Continued)
NSC-78 Monthly Information Sheet IMonth: Jurn-20051 I Revised 3/22/2004 Cumulative MWH's TOTAL NSC-78 LEU l Start: 59,961.511 l End: 160,019.91l 10,312.49 l
- added HEU=49698.01 Run Ave Pwr System Start S/D Operating Todays Stack Ar-41 Released No.
Day Level On Time Time Time Time total Monitor Limit = 4E-4 uCVcc (1-31)
(MW)
(hhmm)
(hhmm)
(hhmm)
(hrs)
MWH max CPM uCVcc ClIday 7872 2
2.00 0947 0947 1209 2.37 4.73 10,000 4.49E-05 0.66 7873 3
2.00 0917 0917 1621 7.07 14.13 9,000 4.04E-05 1.98 7874 7
2.00 0935 0935 1125 1.83 3.67 9,000 4.04E-05 0.51 7875 9
2.00 0945 0945 1020 0.58 1.17 9,000 4.04E-05 0.16 7876 14 2.00 0928 0928 1246 3.30 6.60 11,000 4.94E-05 0.92 7877 16 2.00 0930 0930 1241 3.18 6.37 9,000 4.04E-05 0.89 7878 20 2.00 0922 0922 1102 1.67 3.33 9,000 4.04E-05 0.47 7879 21 2.00 0922 0922 1124 2.03 4.07 9,000 4.04E-05 0.57 7880 23 2.00 0930 0930 1030 1.00 2.00 9,000 4.04E-05 0.28 7881 26 2.00 0952 0952 1102 1.17 2.33 9,000 4.04E-05 0.33 7882 30 2.00 1007 1007 1507.
5.00 10.00 10,000 4.49E-05 1.40 Totals:,
29.20 58.40 8.18
SUMMARY
Operating Max.
Actual l Max.
Actual
.Hours 147.0 29.2 MWH's:
294.0 58.4 Percentage 20%
1 20%
Stack Releases 8.2 curies I
I-
-Z' 4'.
ENCLOSURE 2 EMERGENCY SHUTDOWNS AND SCRAMS The following is a listing of the emergency shutdowns and inadvertent scrams that occurred during the 2004-2005 reporting period. This information is required by Technical Specification 6.8.4.b.
DATE RUN #
LOGBOOK / PAGE CAUSE 7/1/04 7736 52 /71 Reactor scram caused by short period on the Log N channel due to noise.
7/13/04 7739 52/74 Reactor scram caused by short period on the Log N channel due to noise.
7/15/04 7740 52/75 Reactor scram caused by short period on the Log N channel due to noise.
7/20/04 7741 52 /76 Reactor scram caused by short period on the Log N channel due to noise.
8/24/04 7754 52/90 Dropped Blade #3 due to magnet misalignment.
9/13/04 7761 52/98 Dropped Blade #3 due to magnet misalignment.
9/21/04 7764 52/ 101 Reactor scram caused by short period on the Log N channel due to noise.
10/21/04 7774 52/ 111 Dropped Blade #3 due to magnet misalignment.
11/4/04 7778 52 / 115 Dropped Blade #3 due to magnet misalignment.
11/16/04 7782 52 / 119 Dropped Blade #3 due to magnet misalignment.
11/29/04 7786 52/ 123 Dropped Blade #3 due to magnet misalignment.
2/11/05 7823 53 / 25 Reactor scram caused by operator error. Power level switch not set to 2 MW.
3/10/05 7837 53 / 39 Dropped Blade #3 due to magnet misalignment.
3/23/05 7846 53 /48 Dropped Blade #2 due to magnet misalignment.
3/30/05 7849 53 /51 Dropped Blade #2 due to magnet misalignment.
4/21/05 7857 53/59 Reactor scram caused by short period on the Log N channel due to noise.
513105 7860 53 /62 Reactor scram caused by short period on the Log N channel due to noise.
5/5/05 7861 53 / 63 Dropped Blade #3 due to magnet misalignment.
5/10/05 7863 53 /65 Reactor scram caused by short period on the Log N channel due to noise.
5/17105 7865 53 /67 Reactor scram when Wide Range Monitor #1 ranged down during start-up.
5/18/05 7866 53 /68 Reactor scram during adjustment of Wide Range Monitor gain.
5/19/05 7867 53 / 69 Reactor scram when turning pumps on.
5/26/05 7870 53 /72 Dropped Blade #2 due to magnet misalignment.
6/2/05 7872 53 /74 Dropped Blade #2 due to magnet misalignment.
ENCLOSURE 2 EMERGENCY SHUTDOWNS AND SCRAMS There were eight scrams due to noise on the Log N Period channel. The staff determined that cooling tower #1 has been a large source of the noise that has been causing these scrams. The level control system for the cooling tower energizes a solenoid valve to fill the reservoir. When the solenoid changes state, a noise signal is generated back through the AC power line. This noise signal is picked up by the Log N Period channel, which causes the period indication to become unstable when reactor power is in the start-up range. A scram occurs whenever the Log N Period channel indicates a period of three seconds or less. On windy days when cooling tower #1 is in use, the wind causes ripples in the reservoir water, which causes the level probes to oscillate between the fill and no fill states. This causes the solenoid valve to oscillate open and closed, generating a lot of noise back through the AC power line.
To combat this problem, a stiller has been put around the reservoir level probes to minimize the effect of ripples in the reservoir water, and an isolation transformer has been put in the AC power line between the secondary cooling system power and the reactor console power, in order to prevent noise in the line from getting back to the Log N Period Channel.
or ENCLOSURE 3 The following is a listing of the major maintenance operations performed in the 2004-2005 reporting period which includes impact upon the safe operation of the reactor and the reasons for corrective maintenance.
This information is required by Technical Specification 6.8.4.c.
- 1. Replacement of Secondary Cooling Tower Level Control Systems As discussed in Enclosure 2, the level control systems for the secondary cooling towers were replaced because the old systems generated noise that interfered with reactor start-ups.
- 2. Installation of Bollards on the rear side of the facility Bollards were installed at the rear of the facility, in accordance with the RINSC Security Plan.
- 3.
Installation of Inline Primary Coolant Conductivity and pH Instrumentation Inline conductivity and pH instrumentation was installed in the Primary Coolant System. Calibration of the system is in progress.
I t
ENCLOSURE 4 FACILITY CHANGES -10CFR50.59 REVIEW The following is a listing and description of IOCFR50.59 evaluations conducted during the 2004-2005 reporting period. This information is required by Technical Specification 6.8.4.d.
- 1. Modification of Neutron Flux Monitor HV Trip Pursuant to 10CFR50.59, a committee was formed to evaluate the modification of the Neutron Flux Monitor HV Trip. The Neutron Flux Monitor HV scram was wired through an alarm relay in the monitor, as well as through the "Inst Trouble" annunciator indicator on the console.
- 2. Modification of Shim Safety Blade Position Indicators Pursuant to IOCFR50.59, a committee was formed to evaluate the modification of the Shim Safety Blade Position Indicators. The mechanical odometers that were being used for shim safety blade position indication were replaced with optical encoders. Also, the old blade position displays were replaced with new digital displays.
ENCLOSURE 5 RADIOLOGICAL CONTROLS
- 1. Environmental Surveys Outside the Facility - Technical Specification 6.8.4.e Quarterly OSL' badges are deployed outside the reactor building in three separate locations. The general public does not frequent these locations and therefore occupancy factors may be used to approximate annual dose. The allowable external dose rates must be below 50 mrem per year. The quarterly doses in units of mrem are shown in the table below.
LOCATION 3RD QTR 2004
-4T QTR 2004 1 QTR 2005 2ND QTR 20052 Northeast Wall 32 7
27 1
Demineralizer 96 122 85 107 D o o r Heat Exchanger 12 42 18 11 Door I
I I
These areas are in locations where access is limited. Consequently, the general public will not frequent these areas, and appropriate occupancy factors can be used to approximate annual dose. Assuming that the maximum time that a member of the general public would be present in one of these locations is 15 minutes per day, an occupancy factor of 0.01 can be used to obtain the annual dose that would be received by a member of the general public, in any of these areas.
The dose rate in the Northeast Wall area is due to storage of RAM, and is present regardless of reactor operation. Applying the occupancy factor, the annual dose to an individual in this area would be 0.67 mrem over the course of last year. The annual dose rate at the Demineralizer and Heat Exchanger Doors is dependent on the operations schedule of the reactor. Ignoring the fact that the dose rate is not present 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> per day, and applying the occupancy factor of 0.01, the annual dose that would be received by an individual at the Demineralizer Door would be 4.10 mrem. Likewise the dose received at the Heat Exchanger Door would be 0.83 mrem.
- 2. Annual Exposures Exceeding 500 mrem - Technical Specification 6.8.4.f There were no personnel exposures greater than 500 mrem.
- 3. Radioactive Effluents - Technical Specification 6.8.4.g A. Gaseous effluent concentrations are documented on the Monthly Information Sheets (Form NSC-
- 78) enclosed. The gaseous effluents, primarily Argon-41, were less than 5% of the 10 CFR 20, Appendix B, Table 2, Column 1 effluent limits.
B. Liquid effluent concentrations released to the sewer are documented on the Sewer Disposal Record (Form NSC-52) and/or the Liquid Release Record (Form NSC-17). No liquids were discharged during the reporting period.
XOptically Stimulated Luminescence 2 Landauer reads the OSL dosimeters to 1 mrem.