ML20154H214
| 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) | |
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Northern States Power Company 414 tecollet M.nll Minneapoks. Minnesota 55401 February 26, 1986 M!C1!TY R7JII M
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Mr J G Keppler M}_
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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
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?o033QocKonooogg, 2J4 asopps W3 R
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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