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Qd/ b Northern States Power Company 414 tecollet M.nll Minneapoks. Minnesota 55401                 l February 26, 1986 M!C1!TY R7JII M gry _   E,i['i u       A.. _
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Mr J G Keppler                                                                           M}_           -
Northern States Power Company 414 tecollet M.nll Minneapoks. Minnesota 55401 February 26, 1986 M!C1!TY R7JII M
J[i' Regional Administrator                                                                   g   ~.t
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US Nuclear Regulatory Commission
Mr J G Keppler M}_
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799 Roosevelt Road                                                                                sk     -
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Glen Ellyn, IL 60137                                                                     ygy[7 MONTICELLO NUCLEAR GENERATING PIANT Docket No. 50-263 License No. DPR-22                                         >
US Nuclear Regulatory Commission 799 Roosevelt Road
Annual Report of Occupational Radiation Exposure and Safety and Relief Valve Failures and Challenges January 1 - December 31, 1986 Attached is a copy of the following reports:
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sk ygy[7 Glen Ellyn, IL 60137 MONTICELLO NUCLEAR GENERATING PIANT Docket No. 50-263 License No. DPR-22 Annual Report of Occupational Radiation Exposure and Safety and Relief Valve Failures and Challenges January 1 - December 31, 1986 Attached is a copy of the following reports:
: 1) Annual Report of Occupational Exposure
: 1) Annual Report of Occupational Exposure
: 2) Annual Report of Safety and Relief Valve Failures and Challenges These reports satisfy the annual reporting requirements contained in Section 6.7. A.2 of Appendix A to DPR-22.
: 2) Annual Report of Safety and Relief Valve Failures and Challenges These reports satisfy the annual reporting requirements contained in Section 6.7. A.2 of Appendix A to DPR-22.
C E Lar n Vice President - Nuclear Generation c:             Document Control Desk, NRC NRC Resident Inspector NRC Project Manager MPCA Attn: J W Ferman d
C E Lar n Vice President - Nuclear Generation c:
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e,         .
e, NUMBER OF PERSONNEL AND MAN-REM BY WORK AND JOB FUNCTION (1985)
NUMBER OF PERSONNEL AND MAN-REM BY WORK AND JOB FUNCTION                           (1985)
Nuniber of Persons >.100 Total Man-Rem Work & Job Function Station Utility Contract Station Utility Contract Rx Ops & Surv Operators 47 0
Nuniber of Persons > .100                 Total Man-Rem Work & Job Function                           Station Utility Contract         Station   Utility   Contract Rx Ops & Surv Operators                                       47                 0   0 22.122     0.0       0.0 Maintenance                                     39               47     3 14.674     19.216     1.665 Supv & Engr                                     13                 3   8   3.717     1.010     3.057 Health Physics                                 21                 0   11 11.641     0.0       3.183 Instr & Controt                                   7               0   0   1.831     0.111     0.0 Security                                         0               0   0   0.0       0.0       0.034 Routine Maintenance Operators                                         2               0   0   1.271     0.0       0.0 Maintenence                                     30               52     8 18.752     19 649     2.682 Supv & Engr                                       3               0   5   0.676     0.178     2.117 Health Physics                                   6               0   9   1.596     0.0       2.581 Instr & Controt                                   0               0   0   0.228     0.0       0.0 nSpecial Maintenance Operators                                         3               0   0   1.089     0.0       0.0 Maintenance                                     22             125     16 14.169     84.031     10.359 Supv & Engr                                       7               0   0   2.926     0.217     3.060 Health Physics                                   5               0   13   1.363     0.0       4.404 Instr & Controt                                   8               0   0   3.496     0.0       0.0 Waste Processing Operators                                       37                 0   0 10.538     0.0       0.0 Maintenance                                     31               17     3 20.219     6.932     0.591 Supv & Engr                                       2               0   11   0.589     0.018     8.529 Health Physics                                   7               0   5   3.797     0.0       1.257 Inservice Inspection Supv & Engr                                       0               0   0   0.0       0.0       0.153 Refueling Operators                                         0               0   0   0.0       0.0       0.0 Maintenance                                       0               0   0   0.0       0.0       0.0 Supv & Engr                                       0               0   0   0.0       0.0       0.0 Health Physics                                   0               0   0   0.0       0.0       0.0 Sub Totals Operators                                       89                 0   0 35.020     0.0       0.0 Maintenance                                   122             241     30 67.814   129.828     15.297 Supv & Engr                                     25                 3   32   7.900     1.423     17.716 Health Physics                                 39                 0   38 18.397     0.0       11.425 Instr & Control                                 15               0   0   5.555     0.111     0.0 Security                                         0               0   0   0.0       0.0       0.042 Grand Total                                           290             244   100 134.694   131.362     44.400 uSpecial Maintenance Itenis: 1) Channel cutting and disposal. 2) Spent Fuel shipping. 3) CRD Modifications. 4)
0 22.122 0.0 0.0 Maintenance 39 47 3
14.674 19.216 1.665 Supv & Engr 13 3
8 3.717 1.010 3.057 Health Physics 21 0
11 11.641 0.0 3.183 Instr & Controt 7
0 0
1.831 0.111 0.0 Security 0
0 0
0.0 0.0 0.034 Routine Maintenance Operators 2
0 0
1.271 0.0 0.0 Maintenence 30 52 8
18.752 19 649 2.682 Supv & Engr 3
0 5
0.676 0.178 2.117 Health Physics 6
0 9
1.596 0.0 2.581 Instr & Controt 0
0 0
0.228 0.0 0.0 nSpecial Maintenance Operators 3
0 0
1.089 0.0 0.0 Maintenance 22 125 16 14.169 84.031 10.359 Supv & Engr 7
0 0
2.926 0.217 3.060 Health Physics 5
0 13 1.363 0.0 4.404 Instr & Controt 8
0 0
3.496 0.0 0.0 Waste Processing Operators 37 0
0 10.538 0.0 0.0 Maintenance 31 17 3
20.219 6.932 0.591 Supv & Engr 2
0 11 0.589 0.018 8.529 Health Physics 7
0 5
3.797 0.0 1.257 Inservice Inspection Supv & Engr 0
0 0
0.0 0.0 0.153 Refueling Operators 0
0 0
0.0 0.0 0.0 Maintenance 0
0 0
0.0 0.0 0.0 Supv & Engr 0
0 0
0.0 0.0 0.0 Health Physics 0
0 0
0.0 0.0 0.0 Sub Totals Operators 89 0
0 35.020 0.0 0.0 Maintenance 122 241 30 67.814 129.828 15.297 Supv & Engr 25 3
32 7.900 1.423 17.716 Health Physics 39 0
38 18.397 0.0 11.425 Instr & Control 15 0
0 5.555 0.111 0.0 Security 0
0 0
0.0 0.0 0.042 Grand Total 290 244 100 134.694 131.362 44.400 uSpecial Maintenance Itenis: 1) Channel cutting and disposal. 2) Spent Fuel shipping. 3) CRD Modifications. 4)
Hanger and Restraint modifications.
Hanger and Restraint modifications.


MONTICELLO NUCLEAR GENERATING PIANT SAFETY / RELIEF VALVE FAILURES AND CHALLENGES 1985 The following is a summary of the safety / relief valve challenges and failures for 1985
MONTICELLO NUCLEAR GENERATING PIANT SAFETY / RELIEF VALVE FAILURES AND CHALLENGES 1985 The following is a summary of the safety / relief valve challenges and failures for 1985
: 1) On June 12, 1985 a reactor scram amd MSIV closure resulted in SRV low-low set system actuation. The "H" low low set SRV controlled reactor pressure between 1040 and 960 psig by opening and closing 3 times during the overpressure transient.       Reference LER 85-010,
: 1) On June 12, 1985 a reactor scram amd MSIV closure resulted in SRV low-low set system actuation. The "H" low low set SRV controlled reactor pressure between 1040 and 960 psig by opening and closing 3 times during the overpressure transient.
: 2) On October 12, 1985 high SRV discharge line temperature, greater than 200 F, indicated excessive pilot or second stage leakage on SRV "G". The SRV topworks were replaced during the weekend shutdown.
Reference LER 85-010,
: 2) On October 12, 1985 high SRV discharge line temperature, greater than 200 F, indicated excessive pilot or second stage leakage on SRV "G".
The SRV topworks were replaced during the weekend shutdown.
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Latest revision as of 00:42, 11 December 2024

Forwards Annual Repts of Occupational Radiation Exposure & Safety & Relief Valve Failures & Challenges for 1985
ML20154H214
Person / Time
Site: Monticello 
Issue date: 02/26/1986
From: Larson C
NORTHERN STATES POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8603100214
Download: ML20154H214 (3)


Text

_ _ _ _ _ _

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Northern States Power Company 414 tecollet M.nll Minneapoks. Minnesota 55401 February 26, 1986 M!C1!TY R7JII M

' gry _ E,i['i u

A.. _

Mr J G Keppler M}_

J[i' ~

Regional Administrator g

~.t UT I. E.~-

US Nuclear Regulatory Commission 799 Roosevelt Road

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sk ygy[7 Glen Ellyn, IL 60137 MONTICELLO NUCLEAR GENERATING PIANT Docket No. 50-263 License No. DPR-22 Annual Report of Occupational Radiation Exposure and Safety and Relief Valve Failures and Challenges January 1 - December 31, 1986 Attached is a copy of the following reports:

1) Annual Report of Occupational Exposure
2) Annual Report of Safety and Relief Valve Failures and Challenges These reports satisfy the annual reporting requirements contained in Section 6.7. A.2 of Appendix A to DPR-22.

C E Lar n Vice President - Nuclear Generation c:

Document Control Desk, NRC NRC Resident Inspector NRC Project Manager MPCA Attn: J W Ferman d

g 9

b ' Igh

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?o033QocKonooogg, 2J4 asopps W3 R

PDR

e, NUMBER OF PERSONNEL AND MAN-REM BY WORK AND JOB FUNCTION (1985)

Nuniber of Persons >.100 Total Man-Rem Work & Job Function Station Utility Contract Station Utility Contract Rx Ops & Surv Operators 47 0

0 22.122 0.0 0.0 Maintenance 39 47 3

14.674 19.216 1.665 Supv & Engr 13 3

8 3.717 1.010 3.057 Health Physics 21 0

11 11.641 0.0 3.183 Instr & Controt 7

0 0

1.831 0.111 0.0 Security 0

0 0

0.0 0.0 0.034 Routine Maintenance Operators 2

0 0

1.271 0.0 0.0 Maintenence 30 52 8

18.752 19 649 2.682 Supv & Engr 3

0 5

0.676 0.178 2.117 Health Physics 6

0 9

1.596 0.0 2.581 Instr & Controt 0

0 0

0.228 0.0 0.0 nSpecial Maintenance Operators 3

0 0

1.089 0.0 0.0 Maintenance 22 125 16 14.169 84.031 10.359 Supv & Engr 7

0 0

2.926 0.217 3.060 Health Physics 5

0 13 1.363 0.0 4.404 Instr & Controt 8

0 0

3.496 0.0 0.0 Waste Processing Operators 37 0

0 10.538 0.0 0.0 Maintenance 31 17 3

20.219 6.932 0.591 Supv & Engr 2

0 11 0.589 0.018 8.529 Health Physics 7

0 5

3.797 0.0 1.257 Inservice Inspection Supv & Engr 0

0 0

0.0 0.0 0.153 Refueling Operators 0

0 0

0.0 0.0 0.0 Maintenance 0

0 0

0.0 0.0 0.0 Supv & Engr 0

0 0

0.0 0.0 0.0 Health Physics 0

0 0

0.0 0.0 0.0 Sub Totals Operators 89 0

0 35.020 0.0 0.0 Maintenance 122 241 30 67.814 129.828 15.297 Supv & Engr 25 3

32 7.900 1.423 17.716 Health Physics 39 0

38 18.397 0.0 11.425 Instr & Control 15 0

0 5.555 0.111 0.0 Security 0

0 0

0.0 0.0 0.042 Grand Total 290 244 100 134.694 131.362 44.400 uSpecial Maintenance Itenis: 1) Channel cutting and disposal. 2) Spent Fuel shipping. 3) CRD Modifications. 4)

Hanger and Restraint modifications.

MONTICELLO NUCLEAR GENERATING PIANT SAFETY / RELIEF VALVE FAILURES AND CHALLENGES 1985 The following is a summary of the safety / relief valve challenges and failures for 1985

1) On June 12, 1985 a reactor scram amd MSIV closure resulted in SRV low-low set system actuation. The "H" low low set SRV controlled reactor pressure between 1040 and 960 psig by opening and closing 3 times during the overpressure transient.

Reference LER 85-010,

2) On October 12, 1985 high SRV discharge line temperature, greater than 200 F, indicated excessive pilot or second stage leakage on SRV "G".

The SRV topworks were replaced during the weekend shutdown.

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