ML20213D808
| ML20213D808 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/29/1986 |
| From: | Blough A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Kister H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8611120241 | |
| Download: ML20213D808 (6) | |
Text
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4 OCT 2 9 tggs Docket No. 50-289 MEMORANDUM FOR: Harry Kister, Chief Projects Branch No. 1 FROM:
Allen R. Blough, Chief Reactor Projects Section 1A
SUBJECT:
TMI-1 STATUS REPORT FOR THE PERIOD OCTOBER 17 - 24, 1986 Enclosed is the TMI-1 weekly status report from the NRC Resident Office at TMI-1 for the subject period. The NRC staff continued to monitor routine plant operations at full power.
TMI-1 status reports are intended to provide NRC management and the public with highlights from an NRC regulatory perspective of TMI-1 activities for the previous week.
Oribinal Sisnod By Allen R. Blough, Chief Reactor Projects Section 1A Branch 1, DRP
Enclosure:
As stated cc w/ enclosure:
F. Miraglia, NRR W. Travers, NRR J. Thoma, NRR J. Partlow, IE T. Gerusky, BRP/ DER, Commonwealth of Pennsylvania R. Benko, Governor's Office of Policy, Commonwealth of Pennsylvania TMI Alert Susquehanna Valley Alliance Friends & Family of TMI H. Hucker A. Herman C. Wolfe J. Johnsrud P. Smith E. Harzler D. Davenport Concerned Mothers and Women Public Document Room Local Public Document Room 0FFICIAL RECORD COPY TMIl WEEKLY STATUS REPORT -
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- Harry Kister 2
bec w/ enclosure:
'K. Abraham, RI P. Lohaus, RI W. Kane, RI H. Kister, RI R. Conte,' RI (20 cys)
W. Baunack, RI R. Freudenberger, RI
. Region I' Docket Room (w/ concurrences)
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RI:DRP RI:DRP RYdRP 4 Conte Blough Kister 1
10/ 3/86 10Rf/86 1047/86 0FFICIAL RECORD COPY TMIl WEEKLY STATUS REPORT -
10/28/86
ENCLOSURE TMI-1 STATUS REPORT FOR THE PERIOD OCTOBER 17 - 24, 1986 1.
Plant Status As of 8:00 a.m. on October 24, 1986, TMI-1 was operating at 100 percent power with a reduced reactor coolant temperature (577' F) and and normal RCS pressure (2155 psig).
2.
Facility Operations Summary The plant continued to operate at 100 percent during the reporting period.
Plant activities associated with upcoming refueling outage continued.
The licensee is presently meeting on a weekly basis to discuss outage prepara-tions and coordination.
Plant coastdown operations commenced this week, consisting of an initial reduction in the average coolant temperature (T-AVE) setpoint. The plant is operating at 577 F with the controlling rod group at 95 percent of fully withdrawn. Nominal T-AVE is 579* F.
Plans are to continue to reduce T-AVE to 575 F and then allow the controlling rod group to come to the full out position at which time reactor power will have to be reduced to allow operation until the November 1, 1986 shutdown.
3.
Items of Special Interest Reactor Coolant Pump (RCP) Seal Problems The "A" Reactor Coolant Pump (RCP) has continued to exhibit low No.1 seal leakoff flow.
Flow has decreased to approximately 0.4 gallons per minute (gpm). The licensee is monitoring seal leakoff outlet temperature and plans to take the pump out of service if temperature increases to 190 F.
The "A" RCP No. I seal leakoff temperature is presently 182 F and has been stable during the week. Based on discussions with the seal vendor, the licensee now suspects that the No. I seal of the "A" RCP may be the cause of the problem.
The licensee continues to monitor seal parameters for changing conditions.
The "C" reactor coolant pump seal, as noted in previous weekly status reports, continues to have higher than normal leakage (nominally 2 gpm).
The leakage continues to be approximately 6 gpm. The licensee is monitor-ing the seal and presently expects to be able to continue full power opera-tions until the planned outage scheduled in November 1986.
Licensee in-spection and appropriate repairs will be performed on both the "A" and "C" RCP during the next outage.
4.
NRC Thermoluminescent Dosimeter (TLD) Monitoring Program for TMI The special NRC TLDs for TMI for the period July 1 - October 3,1986, were processed at the Region I TLD laboratory.
The TLD readings are provided in the attached Table A.
The monitoring results indicate that the OFFICIAL RECORD COPY TMIl WEEKLY STATUS REPORT -
11/29/80
r n
2 Enclosure radiation levels at these monitoring locations remain at natural back-ground levels. These readings can be expected to vary slightly from period to period due to variations in natural background, independent of releases from the plant.
5.
NRC Meeting with Public Interest Groups On October 22, 1986 representatives of NRC Region I met with representa-tives of TMI Alert (TMIA) and Susquehanna Valley Alliance (SVA), as well as one private citizen, to discuss the NRC's TLD Direct Radiation Monitoring Network around TMI. This meeting was to follow up on questions raised by SVA as to whether the NRC TLD's are optimally positioned. Attendees were as follows:
Frances Skolnick, SVA Cherie Friedrich, TMI Alert Mary,0sborn, Citizen Allen (Randy) Blough, NRC Region I: Chief, Reactor Projects Section IA Walt Pasciak, NRC Region I: Chief, Effluents Radiation Protection Section Curt Cowgill, NRC Region I: Chief, TMI-2 Project Section Mr. Pasciak explained the NRC TLD system, including basic operation, pro-cessing, reporting, and results; and explained how NRC selects the monitor locations around a plant. Mr. Pasciak also responded to various questions regarding NRC inspection programs, environmental impact analyses, and ef-fluent release reporting requirements. Mr. Pasciak explained that results of the NRC TLD monitoring system, as well as results of NRC inspections of the licensee's effluent control program, indicate that plant releases con-tribute a very small amount to public exposure when compared to natural background radiation. Using local area maps, participants discussed in detail the NRC TLD network around TMI.
Ms. Skolnick and Ms. Osborn indicated they would get back to NRC with specific locations where they feel additional coverage is warranted.
Of the many questions asked by the attendees, several required additional research by NRC to fully answer -- in those cases NRC representatives agreed to followup and provide the answers later.
During the meeting Ms. Osborn expressed her view that unexplained health effects continue to occur in the area.
She hopes to provide the details in writing soon.
6.
NRC Staff Activities During the Period During this report period, the NRC staff consisted of the senior resident inspector and two resident inspectors. Two region-based inspectors were on site to conduct reviews in the area of non-licensed training and radio-logical effluents measurements.
OFFICIAL RECORD COPY TMIl WEEKLY STATUS REPORT -
The NRC independent measurements van was on site during the week. The NRC inspectors were using the van to conduct independent verification of samples of the various effluents that are released from the plant.
The senior resident inspector also conducted an inspection at the licensee engineering facilities in Parsippany, New Jersey, for a portion of the week, concentrating on pre-outage work for the modifications that will be accomplished during the upcoming outage.
The NRC staff at TMI-1 was comprised of the following personnel during the period:
R. Conte, Senior Resident Inspector-C. Hix, Secretary D. Johnson, Resident Inspector W. Oliveira, Reactor Inspector (part time)
R. Struckmeyer, Radiation Specialist (part time)
F. Young, Resident Inspector i
j OFFICIAL RECORD COPY THIl WEEKLY STATUS REPORT -
10/28/86 i
TABLE A TMI SPECIAL TLD MONITORING RESULTS Station Distance Direction Baseline Field Exposure 7/1/86-10/3/86 (miles) mR/ day mR/ day (Mean i s.d.) (Mean i s.d.; total uncertainty)
Control #1 0.151 1 0.010; 0.02 Control #2 0.144 1 0.001; 0.02 2
3.9 101 0.19 1 0.02 0.278 1 0.011; 0.04 3
2.7 109 0.16 1 0.02 0.184 1 0.012; 0.03 4
1.8 163 0.16 2 0.02 0.200 1 0.030; 0.03 5
2.2 161 0.18 + 0.02 0.176 + 0.004; 0.03 6
1.0 150 0.1710.03 0.18310.003;0.03 7
0.6 136 0.17 + 0.02 0.180 + 0.007; 0.03 8
0.4 83 0.16 7 0.03 0.200 7 0.006; 0.03 9
0.5 60 0.1610.02 0.16710.005;0.03 10 1.7 1
0.14 + 0.02 0.161 + 0.007; 0.02 11 0.9 25 0.16 7 0.01 0.196 7 0.004; 0.03 12 2.8 46 0.16 7 0.02 0.174 7 0.004; 0.03 14 2.5 358 0.1410.02 0.16710.006;0.03 16 3.1 0
0.14 1 0.02 0.166 1 0.003; 0.03 18 3.5 349 0.17 + 0.03 0.152 + 0.005; 0.02 19 3.2 343 0.17 I 0.02 0.191 7 0.008; 0.03 20 5.0 318 0.16 7 0.01 0.196 7 0.010; 0.03 21 1.3 348 0.13 7 0.01 0.176 7 0.003; 0.03 22 3.1 17 0.17 7 0.02 0.180 7 0.014; 0.03 23 3.8 64 0.13 I 0.01 0.149 7 0.007; 0.02 24 3.6 44 0.1710.01 0.18710.000;0.03 34 2.3 267 0.17 + 0.01 0.180 + 0.011; 0.03 35 1.8 299 0.17 7 0.01 0.182 I 0.004; 0.03 36 1.2 267 0.12 7 0.02 0.146 i 0.009; 0.02 37 1.4 256 0.14}0.01 0.15710.000;0.02 38 1.9 225 0.18 + 0.02 0.186 + 0.006; 0.03 39 2.1 200 0.13 7 0.01 0.175 7 0.002; 0.03 40 2.5 204 0.16 7 0.02 0.167 I 0.012; 0.03 46 3.0 177 0.14 7 0.02 0.165 7 0.001; 0.03 50 4.9 145 0.1410.04 0.17510.002;0.03 Abbreviations:
mR
= millirem s.d. = standard deviation REMARKS:
Twenty-nine environmental (offsite) locations are monitored using special TLDs for the TMI site.
Two control TL0s were stored in a 1/2" thick lead shield at the NRC TMI Office. The baseline data for the environmental monitoring were calculated using the past ten quarters of monitoring results. All monitoring results indicate normal natural background radiation levels.
0FFICIAL RECORD COPY TMIl WEEKLY STATUS REPORT -