ML042470400

Annual Report from Rhode Island Atomic Energy Commission

ML042470400
Person / Time
Site:	Rhode Island Atomic Energy Commission
Issue date:	08/26/2004
From:	Marlone Davis State of RI, Atomic Energy Comm
To:	Hughes D Office of Nuclear Reactor Regulation
References
Download: ML042470400 (18)

Text

STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS Pr RHODE ISLAND ATOMIC ENERGY COMMISSION Rhode Island Nuclear Science Center 16 Reactor Road Narragansett, RI 02882-1165 August 26, 2004 Docket No. 50-193 Mr. Daniel Hughes, Project Manager Non-Power Reactors, Decommissioning and Environmental Project Directorate Division of Reactor Projects - IlI/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 1 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, qA..nd- Da,,

Michael J. Davis Reactor Supervisor Enclosures (5)

Copy to:

Mr. Craig Bassett, USNRC Region I Dr. Harry Knickle, Chairman NRSC Dr. Vincent Rose, Chairman RIAEC Dr. Peter Gromet, RIAEC Dr. Bahram Nassersharif, RIAEC Dr. Stephen Mecca, RIAEC Dr. Alfred L. Allen, RIAEC C)1-

ENCLOSURE I Technical Specifications Section 6.8.4.a (01-02)

Reactor Energy Energy Critical Generated Generated Month (hours) (MWh) (MWd)

July-03 30.98 53.30 2.22 August-03 20.45 34.54 1.44 September-03 23.68 44.11 1.84 October-03 28.93 39.69 1.65 November-03 33.90 62.20 2.59 December-03 21.85 40.69 1.70 January-04 13.75 27.50 1.15 February-04 17.03 34.07 1.42 March-04 16.85 30.18 1.26 April-04 21.77 43.53 1.81 May-04 21.93 43.87 1.83 June-04 27.05 53.97 2.25 2002-03 Totals: 278.17 507.65 21.15 Total Energy Output Since Initial Criticality: 59,040.65 2,460.03

I ENC IOSUR I I .

ENCLOSURE I

(Continued)

- A.,. ,.

NSC-78 Monthly Information Sheet - NSC-78 IMonth: Jul-03 I lRevised 3/22/04 Cumulative MWH's TOTAL LEU I Start: 58,533.011 I End: l 58,586.31 1 8,878.89 _

• added HEU=49698.01 Stack Calibration Factor = 4.375E-9 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Releases No. Day Level Time Time Time total Monitor Limit = 4E-4 uCi/cc_ l (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Cl/day 7612 1 2.00 0927 1227 3.00 6.00 9,000 3.94E-05 0.84 7613 3 2.00 1026 1105 0.65 1.30 9,000 3.94E-05 0.18 7614 8 2.00 0922 1037 1.25 2.50 9,000 3.94E-05 0.35 7615 10 2.00 1002 1100 0.97 1.93 8,500 3.72E-05 0.27 7616 14 1358 1527 1.48 550 2.41E-06 7617 15 2.00 1038 1443 4.08 8.17 9,000 3.94E-05 1.14 7618 16 0954 1141 1.78 500 2.19E-06 7619 17 2.00 1054 1353 2.98 5.97 9,000 3.94E-05 0.84 7620 21 1428 1532 1.07 550 2.41E-06 7621 22 2.00 0918 1431 5.22 10.43 9,000 3.94E-05 1.46 7622 24 2.00 1026 1256 2.50 5.00 9,000 3.94E-05 0.70 7623 29 2.00 0944 1244 3.00 6.00 9,000 3.94E-05 0.84 7624 30 2.00 1042 1342 3.00 6.00 10,000 4.38E-05 0.84 Totals: ; 30.98 53.30 1 7.46

SUMMARY

Operating Max. Actual ._I Max. Actual Hours 154.0 31.0 MWH's: 308.0 53.3 Percentage 20% _ 17%

Stack Releases 7.5 curies I

E -. "L.SURE S 1 I ENCLOSURE I (Continued) I

. -.'i, 1._'

NSC-78 Monthly Information Sheet' - NSC-78 Month: Aug-03 IRevised 3/22/04 Cumulative MWH's TOTAL LEU Start: 58,586.31 End: 158,620.85 8,913.43

• added HEU=49698.01 Stack Calibration Factor = 4.375E-9 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Releases No. Day Level Time Time Time total Monitor Limit = 4E-4 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Cilday 7625 5 2.00 0926 1255 3.48 6.97 9,000 3.94E-05 0.98 7626 7 2.00 1021 1115 0.90 1.80 8,000 3.50E-05 0.25 7627 12 2.00 0926 1106 1.67 3.33 8,500 3.72E-05 0.47 7628 14 2.00 1206 1506 3.00 6.00 9 000 3.94E-05 0.84 7629 18 1416 1455 0.65 500 2.19E-06 7630 19 2.00 0929 1230 3.02 6.03 9,000 3.94E-05 0.84 7631 20 0.10 1026 1146 1.33 0.13 500 2.19E-06 0.02 7632 21 2.00 1049 1300 2.18 4.37 8,000 3.50E-05 0.61 7633 26 1.95 1132 1430 2.97 5.79 9,000 3.94E-05 0.81 7633 26 0.10 1430 1545 1.25 0.13 2,000 8.75E-06 0.02 Totals: __ _ 20.45 34.54 _ 4.84

SUMMARY

Operating Max. Actual l Max. Actual Hours 147.0 20.5 MWH's: 294.0 34.5 Percentage l 14% 12%

Stack Releases

I  :,,

ENCLOSURE I

• (Continued)

NSC-78 Monthly Information Sheet NSC-78 I Month: Sep-03 [. I Revised 3/22/04 I Cumulative MWH's TOTAL LEU I Start: 58,620.851 I End: 158,664.961 8,957.54 l

• added HEU=49698.01 Stack Calibration Factor = 4.375E-9 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Releases No. Day Level Time Time Time total Monitor Limit = 4E-4 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Ci/day 7634 2 2.00 0923 1217 2.90 5.80 9,000 3.94E-05 0.81 7635 3 0.10 1104 1144 0.67 0.07 900 3.94E-06 0.01 7636 4 2.00 1027 1251 2.40 4.80 8,000 3.50E-05 0.67 7637 9 2.00 0929 1230 3.02 6.03 8,500 3.72E-05 0.84 7638 11 2.00 1037 1338 3.02 6.03 9,000 3.94E-05 0.84 7639 16 2.00 1017 1325 3.13 6.27 8,000 3.50E-05 0.88 7640 18 2.00 0925 0946 0.35 0.70 8,000 3.50E-05 0.10 7641 23 2.00 1054 1323 2.48 4.97 8,000 3.50E-05 0.70 7642 24 0.10 1047 1150 1.05 0.11 1,000 4.38E-06 0.01 7643 30 2.00 0919 1359 4.67 9.33 9_000 3.94E-05 1.31 Totals: 23.68 44.11 6.17

SUMMARY

- Operating Max. Actual Max. Actual Hours 147.0 23.7 MWH's: 294.0 44.1 Percentage 16% 15%

11 0,'-I ENCLOSURE I (Continued)

NSC-78 Monthly Information Sheet . NSC-78 IMonth: Oct-03 I l Revised 3/22/04 l Cumulative MWH's TOTAL LEU I Start: 58,664.961 I End: 158,704.651 8,997.23 l

• added HFU=49698.01 Stack Calibration Factor = 4.375E-9 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Releases No. Day Level Time Time Time total Monitor Limit = 4E-4 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Cl/day 7644 2 2.00 0918 1047 1.48 2.97 9,000 3.94E-05 0.42 7645 6 1221 1443 2.37 800 3.50E-06 7646 7 2.00 0929 1213 2.73 5.47 8,500 3.72E-05 0.77 7647 8 0.10 1026 1201 1.58 0.16 800 3.50E-06 0.02 7648 9 2.00 1053 1133 0.67 1.33 8,000 3.50E-05 0.19 7649 14 2.00 0927 1047 1.33 2.67 9,000 3.94E-05 0.37 7650 15 0.10 1035 1225 1.83 0.18 800 3.50E-06 0.03 7651 16 2.00 1056 1210 1.23 2.47 8,000 3.50E-05 0.35 7652 20 1147 1339 1.87 400 1.75E-06 7653 21 2.00 0946 1246 3.00 6.00 8,000 3.50E-05 0.84 7654 22 0.03 1012 1057 0.75 0.02 600 2.63E-06 0.00 7655 23 2.00 1044 1342 2.97 5.93 9,000 3.94E-05 0.83 7656 28 2.00 1035 1255 2.33 4.67 8 000 3.50E-05 0.65 7656 28 2.00 1458 1647 1.82 3.63 8 000 3.50E-05 0.51 7657 29 0.10 1007 1102 0.92 0.09 800 3.50E-06 0.01 7658 30 2.00 1038 1241 2.05 4.10 8 000 3.50E-05 0.57 Totals: 28.93 39.69 , 5.56

SUMMARY

Operating Max. Actual Max. Actual l Hours 154.0 28.9 MWH's: 308.0 39.7 Percentage 19% [_13%

Stack Releases 5.6 Curies

ENCLOSURE I (Continued)

NSC-78 Monthly Information Sheet NSC-78 Month: Nov-03 T Revised 3/22/04 Cumulative MWH's TOTAL LEU I Start: 58,704.651 I End: 158,766.851 9,059.43 l

• added HEU=49698.01 Stack Calibration Factor = 4.375E-9 Run Ave Pwr Start SID Operating Todays Stack Ar-41 Releases No. Day Level Time Time Time total Monitor Limit = 4E-4 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Cifday 7659 4 2.00 0936 1200 2.40 4.80 9,000 3.94E-05 0.67 7660 5 0.10 1049 1203 1.23 0.12 800 3.50E-06 0.02 7661 6 2.00 1018 1230 2.20 4.40 8,000 3.50E-05 0.62 7662 12 1.70 1353 1443 0.83 1.42 7,000 3.06E-05 0.20 7663 13 2.00 0900 1605 7.08 14.17 8,000 3.50E-05 1.98 7664 14 2.00 1038 1738 7.00 14.00 9,000 3.94E-05 1.96 7665 18 2.00 1007 1312 3.08 6.17 9,000 3.94E-05 0.86 7666 19 0.10 1104 1239 1.58 0.16 800 3.50E-06 0.02 7667 20 2.00 0940 1240 3.00 6.00 8,000 3.50E-05 0.84 I 7668 25 2.00 0937 1159 2.37 4.73 9,000 3.94E-05 0.66 7669 28 2.00 0944 1251 3.12 6.23 8,000 3.50E-05 0.87 Totals: I_ - - I- 33.90 62.20 ____ 8.71

SUMMARY

Operating Max. Actual Max. Actual l Hours 133.0 33.9 MWH's: 266.0 62.2 Percentage . 25% 23%

Stack Releases j 8.7 curies

ENCLOSURE1  ; I 2 ENCLOSUIRE I (Continued)

I ,I.

NSC-78 Monthly Information Sheet!  ; NSC-78 IMonth: Dec-03 I I Revised 3/22/04 l Cumulative MWH's TOTAL LEU l Start: 58,766.851 l End: 158,807.541 9,100.12 l

• added HEUJ=4q6qR.01 Sctak Calihbrtinn Fartnr = 4.75E-9 Run Ave Pwr Start S/D Operating Todays Stack Ar-41 Releases No. Day Level Time Time Time total Monitor Umit = 4E-4 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Ci/day 7670 2 2.00 0940 1020 0.67 1.33 9,000 3.94E-05 0.19 7671 4 2.00 1037 1531 4.90 9.80 9,000 3.94E-05 1.37 7672 9 2.00 0946 1252 3.10 6.20 9,000 3.94E-05 0.87 7673 10 0.10 1145 1320 1.58 0.16 900 3.94E-06 0.02 7674 11 2.00 0940 1240 3.00 6.00 8,000 3.50E-05 0.84 7675 16 2.00 0922 1242 3.33 6.67 8,000 3.50E-05 0.93 7676 18 2.00 1023 1120 0.95 1.90 8,000 3.50E-05 0.27 7677 23 2.00 0907 1024 1.28 2.57 8,000 3.50E-05 0.36 7678 30 2.00 1029 1331 3.03 6.07 8,000 3.50E-05 0.85 Totals: 21.85 40.69 2.97E-04 5.70

SUMMARY

Operating Max. Actual Max. Actual Hours 154.0 21.9 MWH's: 308.0 40.7 Percentage 14% 13%

Stack Releases 5.7 curies

, - 1; f-ENCLOSURE 1

.. (Continued)

NSC-78 Monthly Information Sheet "' NSC-78 I Month: Jan-04 I I Revised 3/22/04 l Cumulative MWH's TOTAL LEU I Start: 58,807.541 I End: 158,835.041 9,137.03 1

• 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 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Cf/day 7679 6 2.00 1005 1025 0.33 0.67 8,000 2.43E-05 0.09 7680 8 2.00 1024 1324 3.00 6.00 9,000 2.74E-05 0.84 7681 13 2.00 0915 1059 1.73 3.47 9,000 2.74E-05 0.49 7682 15 2.00 1038 1338 3.00 6.00 9,000 2.74E-05 0.84 7683 20 2.00 0949 1043 0.90 1.80 9,000 2.74E-05 0.25 7684 27 2.00 0852 1120 2.47 4.93 10,000 3.04E-05 0.69 7685 29 2.00 1037 1256 2.32 4.63 10,000 3.04E-05 0.65 Totals: __ _ _ 13.75 27.50 = = 3.85

SUMMARY

Operating [ Max. Actual l Max. l Actual Hours l 147.0 13.8 MWH's: 294.0 27.5 Percentage _ __ 9% ____ 9%

Stack Releases j 3.9 curies l _ _I

L O S U --

ENCLOSURE I (Continued)

NSC-78 Monthly Information Sheet ' NSC-78 I Month: Feb-04 I I Revised 3/22/04 l Cumulative MWH's TOTAL LEU l Start: 58,835.041 l End: 158,869.11 9,171.10

• 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 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Ci/day 7686 3 2.00 0916 1123 2.12 4.23 10,000 4.90E-05 0.59 7687 5 2.00 1036 1336 3.00 6.00 9 000 4.41E-05 0.84 7688 10 2.00 0913 1055 1.70 3.40 9 000 4.41E-05 0.48 7689 12 2.00 1029 1329 3.00 6.00 9,000 4.41E-05 0.84 7690 17 2.00 0915 1037 1.37 2.73 9,000 4.41E-05 0.38 7691 19 2.00 1028 1207 1.65 3.30 9,000 4.41E-05 0.46 7692 27 2.00 0916 1328 4.20 8.40 9 4.41E-05 1.18 Totals: ,_ _ = 17.03 34.07 =- 4.77

SUMMARY

Operating Max. Actual Max. Actual Hours 140.0 17.0 MWH's: 280.0 34.1 Percentage 12% 12%

Stack Releases - 4.8 curies I

,. 4 , -

ENCLOSURE I (Continued)

NSC-78 Monthly Information Sheet NSC-78 Month: -Mar-04 Revised 3/22/04 Cumulative MWH's TOTAL LEU I Start: 58,869.111 I End: 158,899.291 9,191.87 1

• added HEU=49698.01 Calibration Factor = 0.00049 Run Ave Pwr Start S/D 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 uCi/cc Ci/day 7693 2 2.00 0911 1051 1.67 3.33 9,000 4.41E-05 0.53 7694 4 2.00 1028 1156 1.47 2.93 9,000 4.41E-05 0.47 7695 9 2.00 0913 1104 1.85 3.70 8,500 4.17E-05 0.55 7696 10 0.10 1036 1131 0.92 0.09 900 4.41E-06 0.03 7697 11 2.00 1025 1141 1.27 2.53 8,000 3.92E-05 0.36 7698 16 2.00 0910 1031 1.35 2.70 8,000 3.92E-05 0.38 7699 17 0.03 0934 1028 0.90 0.02 8,000 3.92E-05 0.25 7700 18 2.00 1007 1048 0.68 1.37 9,000 4.41E-05 0.22 7701 22 2.00 1043 1106 0.38 0.77 8,000 3.92E-05 0.11 7702 23 2.00 0907 1025 1.30 2.60 8,000 3.92E-05 0.37 7703 25 2.00 1100 1304 2.07 4.13 9,000 4.41E-05 0.66 7704 30 2.00 0922 1222 3.00 6.00 9,000 4.41E-05 0.95 Totals: 16.85 30.18 4.87

ISUMMARY

Operating Max. Actual Max. I Actual Hours 147.0 16.9 MWH's: 294.0 30.2Z Percentage 11% I 10%

Stack Releases 4.9 curies II

L 7

,. ~ - .t!i.3 : '. I I ENCLOSURE ]

(Continued) m S NSC-78 Monthly -Information Sheet -,, NSC-78 I Month: Apr-04 l - I l Revised 3/22/04 Cumulative MWH's TOTAL LEU Start: 58,899.291 l End: l58,942.82l 9,235.40

• 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 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Ci/day 7705 1 2.00 0914 1116 2.03 4.07 8,000 2.43E-05 0.57 7706 6 2.00 0908 1049 1.68 3.37 9 000 2.74E-05 0.47 7707 8 2.00 1103 1108 0.08 0.17 7 500 2.28E-05 0.02 7708 13 2.00 1057 1357 3.00 6.00 7,000 2.13E-05 0.84 7709 15 2.00 1108 1408 3.00 6.00 8,000 2.43E-05 0.84 7710 20 2.00 1019 1319 3.00 6.00 8,000 2.43E-05 0.84 7711 22 2.00 1104 1404 3.00 6.00 8,000 2.43E-05 0.84 7712 23 2.00 1154 1234 0.67 1.33 8,000 2.43E-05 0.19 7713 27 2.00 0932 1150 2.30 4.60 8,000 2.43E-05 0.64 7714 29 2.000 1000 1300 3.00 6.00 9 000 2.74E-05 0.84 Totals: 21.77 43.53 6.09

SUMMARY

Operating Max. lActuall Max. ActualF Hours 154.0 21.8 l MWH's: 308.0 43.5 Percentage _ 14% _ 14%

Stack Releases 6.1 curies

ENCLOSURE I (Continued)

NSC-78 .Monthly Information Sheet X it, NSC-78 I Month: May-04 I I Revised 3/22/04 l Cumulative MWH's TOTAL LEU I -Start: 58.942.821 I End: l 58,986.691 9,279.27 l

• 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 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Ci/day 7715 4 2.00 0957 1257 3.00 6.00 8,000 2.43E-05 0.84 7 7 16 5_ _ _ _ _ _ _ _ _ _ _ _ _ _ _

7717 6 2.00 1025 1325 3.00 6.00 8,000 2.43E-05 0.84 7718 11 2.00 0955 1055 1.00 2.00 8,000 2.43E-05 0.28 7719 13 2.00 1027 1323 2.93 5.87 8,000 2.43E-05 0.82 7720 18 2.00 1053 1353 3.00 6.00 8,000 2.43E-05 0.84 7721 20 2.00 0934 1234 3.00 6.00 8,000 2.43E-05 0.84 7722 25 2.00 0954 1254 3.00 6.00 8,000 2.43E-05 0.84 7723 27 2.00 1103 1403 3.00 6.00 7 000 2.13E-05 0.84 Totals:, 21.93 43.87 6.14

SUMMARY

Operating Max. Actual Max. Actual a

Hours 147.0 21.9 MWH's: 294.0 43.9 Percentage 15% 15%

Stack Releases 6.1 curies

i; ;W

. ; ENCLOSURE I

• (Continued)  ?

NSC-78 ,Monthly Information Sheet,.,;., - I NSC-78 I Month: Jun-2004 l I Revised 3/22/04 l Cumulative MWH's TOTAL LEU l Start: 58,986.691 l End: 159,040.651 9,333.23

• 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 uCi/cc (1-31) (MW) (hhmm) (hhmm) (hrs) MWH max CPM uCi/cc Ci/day 7724 1 2.00 0950 1250 3.00 6.00 8,000 2.43E-05 0.84 7725 2 2.00 1353 1449 0.93 1.87 8,000 2.43E-05 0.26 7726 3 2.00 1009 1218 2.15 4.30 8,000 2.43E-05 0.60 7727 .8 2.00 0900 1156 2.93 5.87 8,000 2.43E-05 0.82 7728 10 2.00 1119 1300 1.68 3.37 7,000 2.13E-05 0.47 7729 15 2.00 0930 1230 3.00 6.00 7,500 2.28E-05 0.84 7730 16 0.40 0925 0929 0.07 0.03 1,200 3.65E-06 0.00 7731 16 0.40 1230 1231 0.02 0.01 7,000 2.13E-05 0.00 7732 17 2.00 1048 1348 3.00 6.00 8,000 2.43E-05 0.84 7733 22 2.00 0952 1408 4.27 8.53 8,000 2.43E-05 1.19 7734 24 2.00 1034 1334 3.00 6.00 8,000 2.43E-05 0.84 7735 29 2.00 1100 1400 3.00 6.00 8,000 2.43E-05 0.84 Totals: al- 27.05 53.97 -- 7.56

SUMMARY

Operating Max. Actual_ Max. Actual Hours 147.0 27.1 MWH's: 294.0 l 54.0 Percentage l 18% - . l _ 18%

Stack Releases 7.6 curies

ENCLOSURE 2 EMERGENCY SHUTDOWNS AND SCRAMS The following is a listing of the emergency shutdowns and inadvertent scrams, including the reasons, which occurred during the 2002-2003 rep6rting period. This information is required by Technical Specification 6.8.4.b. * '  ;'

DATE RUN# LOGBOOK / PAGE CAUSE 8/14/03 7628 51 / 114 Reactor scram cause by high powver on Log N Power channel, due to incore location.

9/3/03 7635 51 / 122 Dropped Blade #3 due to magnet mnisalignment.

9/11/03 7638 51 / 125 Dropped Blade #3 due to magnet misalignment.

9/16/03 7639 51 / 126 Reactor scram cause by high power on Log N l _ Power channel, due to incore location.

10/28/03 7656 52/2 Dropped Blade #I due to magnet misalignment.

10/30/03 7658 52 /4 Reactor scram caused by short period on the Log N channel due to noise.

11/18/03 7665 52 / 9 Reactor scram caused by operator error - failure to range up on Wide Range Power Level Channel 11/19/03 7666 52/ 10 Dropped Blade #3 due to magnet misalignment.

4/15/04 7709 52 /47 Dropped Blade #3 due to magnet misalignment.

4/22/04 7711 52 /49 Dropped Blade #2 due to magnet misalignment.

4/23/04 7712 52/50 Dropped Blade #3 due to magnet misalignment.

5/4/04 7715 52/52 Dropped Blade #3 due to magnet misalignment.

5/13/04 7719 52/55 Dropped Blade #3 due to magnet misalignment.

6/10/04 7728 52 /63 Reactor scram caused by operator error - failure to range up on Wide Range Power Level Channel 6/24/04 7734 52 /69 Reactor scram caused by short period on the Log N channel due to noise.

6/29/04 7735 52/70 Reactor scram caused by short period on the Log N channel due to noise.

There were two high power scrams on the Log N Power channel that were due to the fact that we had experiments in the incore location that is next to the detector for this channel. When incores are in place in this core location, this channel reads artificially high. The power indication for this channel is not on the operator console, so a high power reading on this channel is easily missed when the Wide Range Power Level channels are reading at normal levels. Table 3.1 in the Technical Specifications requires RINSC to have a minimum of two reactor power level scrams which have set points of 115% power, or less. The two channels that are used to meet this requirement are the Wide Range Monitor Channels. When the Neutron Flux Monitor channel was added to the system, an additional over power scram was added. In order to avoid re-occurrence of this scram, the scram set point for this channel was changed to 125% as part of Revision 7 to Operating Procedure Appendix V RINSC Pre-Start Checkout. This change was approved by NRSC on 5 December 2003.

ENCLOSURE 3 The following is a listing of the major maintenance operations performed in-the 2003-2004 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.

During the 2003-2004 reporting period, there wvere no major maintenance operations performed.

ENCLOSURE 4 FACILITY CHANGES -I OCFR50.59 REVIEW The following is a listing and description of IOCFR50.59 evaluations conducted during the 2003-2004 reporting period. This informnationi is required by Technical Specification' 6.8.4.d.

There were no 10CFR50.59 evaluations conducted during this reporting period.

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 rnem per year. The quarterly doses in units of mrem are shown in the table below.

LOCATION 3D QTR 2003 4"'QTR 2003 1o QTR 2004 2ND QTR 20041 Northeast Wall 32 34 27 25 Demineralizer 89 122 85 96 Door I Heat Exchanger 29 38 18 12 Door 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 1.18 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 3.92 mrem. Likewise the dose received at the Heat Exchanger Door would be 0.97 nirem.

2. Annual Exposures Exceeding 500 nirem - Technical Specification 6.8.4.f There were no personnel exposures greater than 500 mrem.

3. Radioactive Effluents - Technical Specification 6.8A.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 I effluent limnits.

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.

2 Optically Stimulated Luminescence 2Landauer reads the OSL dosimeters to I mrem.