ML18113A246
| ML18113A246 | |
| Person / Time | |
|---|---|
| Site: | Palisades  (DPR-020) |
| Issue date: | 04/20/2018 |
| From: | Entergy Nuclear Operations |
| To: | Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML18113A244 | List: |
| References | |
| PNP 2018-020 | |
| Download: ML18113A246 (20) | |
Text
Attachment 1 Palisades Nuclear Plant 2017 Radioactive Effluent Release Report 2017 Plant Operating History Palisades Nuclear Plant (PNP) entered the reporting period online on January 1,2017, at 100% full power. PNP experienced no unexpected scrams during the 2017 calendar year. PNP entered into a maintenance outage on 03/17/2017 to repair a control rod drive mechanism seal. PNP increased to 70% power by 03/27/2017 and remained at approximately that power until the scheduled refueling outage on 04/23/2017. PNP increased to full power by OS/26/2017 and remained at full power for the remainder of the calendar year.
The unit generated 6,097,497.05 MWHrs of net electrical energy during 2017.
A. Gaseous Effluents Tables 1A, "2017 Gaseous Effluents - Summation of All Releases," 1 B, "2017 Gaseous Effluents - Ground-Level Release - Batch Mode," and 1 C, "2017 Gaseous Effluents - Ground-Level Release - Continuous Mode," list and summarize gaseous effluents released during this reporting period.
B. Liquid Effluents Tables 2A, "2017 Liquid Effluents - Summation of All Releases," 2B, "2017 Liquid Effluents - Batch Mode," and 2C, "2017 Liquid Effluents - Continuous Mode," list and summarize liquid effluents released during this reporting period.
C. Solid Waste Storage and Shipments Table 3, "2017 Solid Waste and Irradiated Fuel Shipments," summarizes solid radioactive waste shipped for processing or burial in 2017 for the following waste streams: resins, filters and evaporator bottoms, dry active waste, irradiated components and other waste.
D. Dose Assessments Table 4, "2017 Dose Assessments, 10 CFR Part 50, Appendix 1," and 5, "2017 EPA 40 CFR Part 190, Individual in the Unrestricted Area," lists annual dose to the members of the public.
E. Supplemental Information
- 1. Regulatory Limits
- a.
Noble Gases The air dose in unrestricted areas due to noble gas released in gaseous effluents shall be limited to the following:
Page 1 of 20
- During the calendar quarter, to :s; 5 mrad for gamma radiation and :s; 10 mrad for beta radiation
- During the calendar year, to :s; 10 mrad gamma radiation and :s; 20 mrad for beta radiation
- b.
lodines - Particulates The dose to a member of the public from radioiodines, radioactive material in particulate form with half-lives greater than eight days, and radionuclides other than noble gas, e.g., tritium, in gaseous effluents released to unrestricted areas shall be limited to the following:
- During any calendar quarter, to :s; 7.5 mrem to any organ
- During any calendar year, to :s; 15 mrem to any organ
- c.
Liquid Effluents The dose or dose commitment to an individual from radioactive material in liquid effluents released to unrestricted areas shall be limited to the following:
- During any calendar quarter to :s; 1.5 mrem to the total body and :s; 5 mrem to any organ
- During any calendar quarter to :s; 3 mrem to the total body and :s; 10 mrem to any organ
- d.
Total Dose The dose or dose commitment to a real individual from all uranium fuel cycle sources is limited to :s; 25 mrem to the total body or any organ (except the thyroid, which is limited to :s; 75 mrem) over a period of 12 consecutive months.
- 2.
Maximum Permissible Concentrations (Effluent Concentration Limits)
- a.
Gaseous Effluents The dose rate due to radioactive material released in gaseous effluents from the site shall be limited to the following:
- For noble gases: :s; 500 mrem/yr to the total body and :s; 3000 mrem/yr to the skin Page 2 of 20 Palisades Nuclear Plant 2017 Radioactive Effluent Release Report
- For all radioiodines and for all radioactive materials in particulate form with half-lives greater than eight days and for radionuclides other than noble gases: s 1500 mrem/yr to any organ The above limits are provided to ensure that radioactive material discharged in gaseous effluents will not result in the exposure of an individual in an unrestricted area to annual average concentrations exceeding the limits of 10 CFR 20, Appendix B, Table 2, Column 1.
- b.
Liquid Effluents The concentration of radioactive material released at any time from the site to unrestricted areas shall be limited to 10 times the concentrations specified in 10 CFR 20, Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2E-4 ~Cilml total activity.
- 3. Average Energy The average energy ( E) of the radionuclide mixture in releases of fission and activation gases as defined in Regulatory Guide 1.21, Appendix B, Section A.3 is not applicable because the limits used for gaseous releases are based on calculated dose to members of the public.
- 4.
Measurements and Approximations of Total Radioactivity PNP uses 0.25 keV per channel with a range of 0-2000 keV.
- a.
Fission and activation gases are sampled and then analyzed on an 8192 channel analyzer with a high purity germanium (HpGe) detector.
- b.
lodines are sampled and then analyzed on an 8192 channel analyzer with an HpGe detector.
- c.
Particulates are sampled and then analyzed on an 8192 channel analyzer with an HpGe detector.
- d.
Liquid effluents are sampled and then analyzed on an 8192 channel analyzer with an HpGe detector. Tritium analysis is performed using liquid scintillation.
Gross Alpha, Gross Beta, Fe-55, Ni-63, Sr-89, and Sr-90 analyses are performed by an offsite vendor.
Page 3 of 20
- 5.
Batch Releases - 2017 For PNP, these totals are not directly proportional to actual release volumes due to PNP having two sets of tanks with different volumes in both the gaseous and liquid release systems. The number of batches performed in this section will fluctuate yearly and quarterly due to the utilization of the smaller and larger tanks. During the first and second quarter of 2017 smaller tanks were used for the batch releases and during the third and fourth quarter larger tanks were used.
Information regarding total activity released is quantified in the Table 1A, 1 B, 1 C, 2A, 2B, and 2C. Reporting average stream flow during periods of release of effluent into a flowing stream is not required as PNP's releases are made into Lake Michigan, and not a flowing stream of water.
- a.
Liquid Number of batch releases for each quarter:
51 in the 1 st quarter 47 in the 2nd quarter 1 in the 3rd quarter 1 in the 4th quarter Total time period for batch releases: 13,330 minutes Maximum time period for a batch release: 737 minutes Average time period for a batch release: 133.3 minutes Minimum time period for a batch release: 46 minutes
- b.
Gaseous Number of batch releases for each quarter:
10 in the 1 st quarter 13 in the 2nd quarter 5 in the 3rd quarter 2 in the 4th quarter Total time period for batch releases: 40817 minutes Maximum time period for a batch release: 30770 minutes Average time period for a batch release: 1361 minutes Minimum time period for a batch release: 51 minutes Page 4 of 20
- 6. Abnormal Discharges
- a. [iquid Number of releases for each quarter 1 st Quarter 2nd Quarter 3rd Quarter 4th Quarter 1
1 0
0 Total activity released in Curies (Ci) 1 st Quarter 2nd Quarter 3rd Quarter 4th Quarter 3.10E-03 1.BOE-03 0
0 There was one abnormal discharge in 2017 that spanned portions of both the first and second calendar quarters.
PNP demonstrates compliance with NRC bulletin BO-10, "Contamination of non-radioactive system and resulting potential for unmonitored, uncontrolled release of radioactivity to environment," by sampling a variety of non-radiological systems for radiological material. The intent of this sampling program is to be proactive in identifying cross contamination between different systems.
A water sample from PNP septic system on 05/09/2017 contained low levels (1,010 pCi/L) of tritium. The sample was promptly re-analyzed and the first analysis was confirmed as correct. On 06/02/2017 the water from PNP septic system was re-sampled and tritium was not detected. Tritium was not detected in PNP septic system for the remainder of 2017.
The septic system sampled discharges into a drain field just north of PNP. The hydrological characteristics of this area indicate that the tritium would migrate to Lake Michigan.
Although tritium concentrations were well below permissible effluent concentrations limits, drinking water limits, and non-drinking water limits, this was considered an "abnormal release" because it was an unplanned release.
It was calculated that a maximum of 3.1 OE-03 Curies of tritium was released in the first quarter and 1.BOE-03 Curies of tritium was released in the second quarter via this release. The projected dose consequence from this release is 3.69E-09 mrem total body and 3.69E-09 mrem organ dose. This is 2.46E-07%
and 7.3BE-OB% of the 10 CFR Part 50, Appendix I offsite dose limit.
- b. Gaseous None.
Page 5 of 20
- 7. Controlled Discharge
- a. liquid None.
- b. Gaseous None.
- 8.
Radioactive Waste Treatment System Changes None.
- 9. Annual Land Use Census Changes The garden critical receptor is located in the SSE sector at 0.70 miles. The residence critical receptor for atmospheric dispersion is located in the S sector at 0.51 miles and for atmospheric deposition is located in the SSE sector at 0.80 miles. The goat critical receptor is in the NE sector at 2.45 miles. The beef cattle critical receptor is located in the ESE sector at 2.04 miles. There are no dairy cows located within five miles of the plant.
- 10. Effluent Monitoring System Inoperability Five of the Radiological Effluent Monitors described in the Offsite Dose Calculation Manual (ODCM) were inoperable for greater than 30 consecutive days. These monitors include RIA-1113, "Waste Gas Discharge Process Monitor," RIA-2326, "Normal Range Noble Gas Stack Monitor," RIA-2325, "Iodine and Particulate Stack Monitor," RIA-2327, "High Range Noble Gas Stack Monitor," and RIA-0707, "Steam Generator Slowdown Effluent Monitor".
PNP declared RIA-1113, "Waste Gas Discharge Process Monitor" as "not functional" on 11/07/2017 due to the instrument behaving erratically. The instrument was repaired and returned to service on 12/14/2017. The delay in restoring the instrument was due to problems with the readout monitor, problems with the detection element, and time for ordering a new detection element from the vendor. Through troubleshooting it was identified that both the readout monitor and the detection element were not functioning properly..
The three radiological monitors RIA-2326, "Normal Range Noble Gas Stack Monitor," RIA-2325, "Iodine and Particulate Stack Monitor," and RIA-2327, "High Range Noble Gas Stack Monitor," perform real time radiological monitoring on the main gaseous discharge point at PNP. All three monitors are part of the Radiological Gaseous Effluent Monitoring System (RGEM), a custom built instrument. This entire system was replaced with a new system during which time Page 6 of 20
the radiation monitors were not functional. The replacement project began on 12/05/2016 and ended on 04/10/2017.
Radiation monitor RIA-0707, "Steam generator blowdown effluent monitor," was non-functional from 12/07/2017 to 01/12/2018 due to communication problems between the sample stream flow element and control room alarms. Upon troubleshooting it was identified that a relay socket base needed to be replaced and a probe was loose at the flowmeter. The delay in restoring functionality in a timelier manner was in part due to ordering and obtaining the relay socket base replacement.
- 11. Offsite Dose Calculation Manual (ODCM) Changes The Offsite Dose Calculation Manual (ODCM) was revised two times in 2017. The General Manager of Plant Operations approved changes to the ODCM as required per site technical specifications. These two revisions are revision number 28 and
- 29. Revision 28 was implemented on 10/31/2017 and Revision 29 was implemented on 12/18/2017. Revision 28 changed an environmental lower limit of detection value, incorporated equipment identification numbers, and corrected minor typographical errors. Revision 29 changed two environmental lower limit of detection values, included additional technical information for the change into the ODCM, and revised atmospheric dispersion and deposition constants in accordance with the recent land use census.
A copy of the ODCM revision 28 and revision 29 are provided in Enclosure 1.
- 12. Process Control Program Changes The following list summarizes changes made during 2017 to various procedures related to the Process Control Program (PCP). The changes did not have an impact on PNP ODCM.
EN-RW-102, "Radioactive Shipping Procedure," Rev.15 and Rev 16:
The purpose of revision 15 was to add instruction for contacting American Nuclear Institute in the event of off-normal shipment of Radioactive Materials (CR-HQN-2016-00874) and to add an option for use of type 8(U) and 8(M) packaging (CR-HQN-2016-00869).
Step 2.0[16]: added reference to ANI Guideline 15-02, "Transportation of Radioactive Materials" Step 3.0[5]: added definition for Special Shipment (from ANI 15-02)
Step 5.1 [14] and preceding Note: added step for advance notification of ANI of Special Shipments Step 5.2[16]: revised Flow Chart 1 and Flow Chart 2 to reflect contacting ANI for Special Shipments Page 7 of 20
Section 8.0: updated commitment number per Grand Gulf Nuclear Station (GGNS) Commitment Review.
- .2, step 4: added item for Type B(U) or B(M) packaging; added "Excl Use SCQ" to 5th bullet item.
The purpose of revision 16 was to remove GGNS section 8.0 items that are not commitments. This revision is non-editorial for GGNS and editorial for the rest of the fleet.
Deleted GGNS line items from section 8.0 that are not actually commitments.
EN-RW-108, "Radioactive Shipment Accident Response," Rev.3:
The purpose of this revision was to address the issue identified in CR-HQN-2016-00530 and CR-HQN-2016-00873 regarding contacting ANI.
Step 2.0[9]: added reference to ANI Information Bulletin 11-01, "Emergency Notification Procedures For ANI Policyholders" Step 2.0[10]: added reference to ANI Guideline 15-02 Step 5.4[1]: simplified step for contacting Licensing Step 5.4[2]: added step addressing how to contact ANI
- 13. Errata/Corrections to Previous Reports Small errors in the 2016 Annual Effluent Release Report (ARERR) were identified during 2017. All errors in the 2016 ARERR were defined as "small errors" per the Regulatory Guide 1.21 Revision 2 definition. Enclosure 2 contains the corrected pages for the 2016 ARERR. All data that was changed is marked with vertical revision bars on the right side of the page. Changes include the addition of all 2016 groundwater monitoring data into the report, a footnote describing the asterisks in table 2C, the correction to the concentration limit of liquid effluents via Palisades' effluents discharge, changing ".48 miles" to "0.48 miles" in the land use census description section, the C-14 "% of limit" in Table 1A being corrected (from fraction of limit to percentage of the limit), and the removal of an asterisk from Tc-99m isotope in Table 2B.
Page 8 of 20
- 14. Other Estimations in Effluent Monitoring PNP continuously samples the stack effluent pathway for particulates using a sample assembly fitted with a particulate filter paper. Once weekly the filter paper is replaced and analyzed. On 08/09/2017 while the filter paper was being collected it was observed that the filter paper was not covering the entire flow pathway. This is adverse to quality because some of the sample stream could have traveled around (not through) the filter paper.
Guidance for estimating particulate effluent for this type of event is provided in Regulatory Guide 1.21 Revision 1 Appendix A Section A.3.a. The estimation performed is in accordance with this guidance. The estimation was performed by analyzing the filter paper for three times longer than normal. When this was done, very low activity of Zr-95 was detected. The concentration of Zr-95 assumed to be present was an average of the minimum detectable Zr-95 activity from the week prior and the following week from this event. The minimum detectable activity was used because no Zr-95 was detected prior to or after this event. The total curie effluent and dose consequence from this estimation was minor (Le. less than 1 % of total dose consequence and less than 1 % of total effluent activity).
There was a delay in gross alpha analysis for the October 2017 monthly liquid radiological waste analysis due to the incorrect analysis being requested. Upon discovery of the error the correct analysis was performed. Typically the analysis is performed approximately 40 days after the end of the month. For the October 2017 sample the analysis was performed 140 days after the end of the month. There was no gross alpha activity detected for the sample. There has been no gross alpha activity detected from Palisades' liquid radiological waste over the 2015, 2016, and 2017 reporting periods.
Groundwater Monitoring:
PNP has 23 groundwater monitoring wells strategically placed within the owner controlled area to allow for detection of radioactive contamination of ground water due to leaks or spills from plant systems. Two additional wells were installed in 2016 to increase the ability for PNP to monitor groundwater. PNP also monitors 16 temporary wells in addition to the 23 monitoring wells. Temporary wells have been strategically installed to provide additional monitoring capability beyond what the 23 monitoring wells provide.
Monitoring Well 11 identified a tritium leak from T-91 (Utility Water Storage Tank) during November of 2016. When this leak was identified, T-91 was emptied and repaired. During this period an increased sampling frequency was implemented into the groundwater monitoring program. Details of this event are discussed in Page 9 of 20
further detail in the 2016 ARERR. Over the 2017 monitoring period there were no new leaks identified and there are currently no known active leaks at PNP.
Temporary wells TW-1, TW-2, TW-9, TW-15, and TW-16 traverse along an East-West transect that is indicative of a historic leak and continues to be monitored. In 2017 tritium among these wells peaked at 14,995 pCi/L. Tritium levels typically spike in TW-15 when the water table rises from a large rainfall or spring melt. The high tritium levels in this area are residual of a leak which was reported to the NRC on December 10,2007.
Monitoring of the residual groundwater tritium plume continues to assess repair effectiveness and follow the site hydrology data. Monitoring well locations are depicted in Figure 1.
Table 1 contains a summary of all groundwater monitoring well results over the monitoring period. The average tritium concentration considers only those which had a detectable concentration of tritium. Table 1 also contains all radiological data for all monitoring and temporary wells collected over 2017. In addition to the list of results in Table 1, an offsite vendor performed analysis for TW-07 and TW-06 samples collected on 09/21/2017 which identified less than detectable concentrations of Fe-55, Ni-63, Sr-89, and Sr-90. If a less than sign (Le. "<")
precedes a number in Table 1 that means there was no detectable activity from that analysis.
The depth to the water table at PNP was approximately 7 feet throughout 2017.
The subsurface aquifer at PNP is not used for drinking water or irrigation.
Hydrological studies performed at PNP indicate that the flow of groundwater is west toward Lake Michigan at approximately 2.2 feet per day.
Page 10 of 20
Table 1 2017 Groundwater Monitoring Well Results Well Total Samples With Minimum Maximum Average Number Samples Detectable Tritium Tritium Tritium Tritium (pCi/L)
(pCi/L)
(pCi/L)
MW1 4
0 NA NA NA MW1A 4
0 NA NA NA MW2 20 17 708 4133 2247 MW3 13 0
NA NA NA MW3A 4
0 NA NA NA MW4 4
0 NA NA NA MW5 4
0 NA NA NA MW6 4
0 NA NA NA MW7 4
0 NA NA NA MW8 4
0 NA NA NA MW9 4
0 NA NA NA MW9A 4
0 NA NA NA MW10 4
0 NA NA NA MW11 37 4
537 1355 1024 MW-12 4
0 NA NA NA MW-13 4
0 NA NA NA MW14 4
0 NA NA NA MW15 4
0 NA NA NA MW16 4
0 NA NA NA MW17 4
0 NA NA NA MW18 4
0 NA NA NA MW19 4
0 NA NA NA MW20 4
0 NA NA NA TW1 10 1
843 843 843 TW2 13 8
1050 3213 1744 TW3 5
0 NA NA NA TW4 6
0 NA NA NA TW5 10 0
NA NA NA TW6 42 10 668 1948 1263 TW7 44 23 694 3772 1779 TW9 13 8
979 8520 4492 TW10 35 4
569 936 722 TW11 4
0 NA NA NA TW13 4
0 NA NA NA TW14 5
0 NA NA NA TW15 20 17 1636 14995 5553 TW16 13 12 968 10833 5129 TW17 5
0 NA NA NA TW18 4
. 0 NA NA NA NA = Not applicable Page 11 of 20
Table 1 2017 Groundwater Monitoring Well Results Tritium (pCi/L)
Monitoring Well Number Sample Date MWlA MW1 MW2 MW3 MW3A MW4 MW5 MW6 MW7 MW8 MW9 MW9A 01/03/17
<553 01/17/17
<599 01/24/17
<585 02/14/17
<598 03/14/17 1550
<596
<596
<596
<596
<596
<596
<596 03/14/17
<527
<591 1542
<527
<527 04/13/17
<570 OS/24/17 3441
<589 06/13/17
<582
<582 3359
<600
<600
<607
<603
<576
<570
<567
<582
<582 06/22/17 4133 06/27/17 3363 07/05/17 2961 07/11/17 2901 07/18/17 2463
<522 07/25/17 3401 08/01/17 2377 08/08/17 1036 08/15/17 1441
<553 08/22/17 1439 08/29/17 840 09/05/17 1253 09/12/17 708
<533
<494
<492
<492
<533
<533
<492 09/13/17
<501
<500
<498
<501 09/25/17
<526 10/02/17
<562 10/10/17
<527 12/12/17
<578
<556
<556
<556
<556
<578
<556
<556 12/13/17
<564
<564
<564
<564 Page 12 of 20
Table 1 2017 Groundwater Monitoring Well Results Tritium (pCi/L)
Monitoring Well, Number Sample Date MW10 MW11 MW-12 MW-13 MW14 MW15 MW16 MW17 MW18 MW19 MW20 01/03/17
<582 01/17/17 1152 01/17/17 1355 01/24/17
<585 02/14/17 1052 03/14/17
<566
<596
<615 03/14/17
<527
<527
<665
<591
<621
< 527
<527
<621 04/13/17
<575 OS/24/17
<605 06/13/17
<582
<603
<563
<600
<582
<582
< 582
<637
<582
<582 06/14/17
<599 06/22/17
<568 06/27/17
<573 07/05/17
<558 07/11/17
<528 07/18/17
< 522 07/25/17 537 08/01/17
<540 08/08/17
<565 08/15/17
<553 08/22/17
<545 08/29/17
<511 09/05/17
<511 09/12/17
< 551
<492
<492
<541 09/13/17
<498
<579
<509
<512
<512
<512
<512 09/18/17
<530 09/21/17
<558 09/25/17
<526 09/28/17
< 521 10/02/17
<562 10/05/17
<526 10/10/17
<527 10/12/17
<510 10/16/17
<527 10/19/17
<530 10/23/17
<513 10/26/17
<537 10/30/17
<539 11/02/17
<527 12/12/17
<556
<578
<556
<556 12/13/17
<564
<564
<564
<564
<544
<564
<564 Page 13 of 20
Table 1 2017 Groundwater Monitoring Well Results Gamma Activity (pCi/L)
Monitoring Well Sample Date MW1 MW1A MW2 MW3 MW3A MW4 MW5 MW6 MW7 MW8 MW9 MWll 01/03/17
<MDA 01/17/17
<MDA 01/17/17
<MDA 01/24/17
<MDA 01/24/17
<MDA 02/14/17
<MDA 02/14/17
<MDA 03/14/17
<MDA
<MDA <MDA <MDA <MDA <MDA <MDA <MDA
<MDA 03/15/17 <MDA <MDA
<MDA 04/13/17
<MDA
<MDA OS/24/17
<MDA
<MDA
<MDA 06/13/17
<MDA
<MDA <MDA <MDA <MDA <MDA <MDA <MDA
<MDA 06/14/17 <MDA <MDA
<MDA 06/22/17
<MDA
<MDA 06/27/17
<MDA
<MDA 07/05/17
<MDA
<MDA 07/11/17
<MDA
<MDA 07/18/17
<MDA 07/18/17
<MDA
<MDA
<MDA 07/25/17
<MDA
<MDA 08/01/17
<MDA
<MDA 08/08/17
<MDA
<MDA 08/15/17
<MDA
<MDA 08/22/17
<MDA
<MDA 08/29/17
<MDA
<MDA 09/05/17
<MDA
<MDA 09/12/17
<MDA
<MDA <MDA <mda
<MDA <MDA
<MDA 09/13/17 <MDA
<MDA 09/18/17
<MDA 09/21/17
<MDA 09/25/17
<MDA
<MDA 09/28/17
<MDA 10/02/17
<MDA
<MDA 10/05/17
<MDA 10/10/17
<MDA
<MDA 10/12/17
<MDA 10/16/17
<MDA 10/19/17
<MDA 10/23/17
<MDA 10/26/17
<MDA 10/30/17
<MDA 11/02/17
<MDA 12/12/17
<MDA
<MDA <MDA <MDA <MDA <MDA <MDA <MDA
<MDA 12/13/17 <MDA <MDA
<MDA
<MDA = the concentration present was less than the minimum detectable activity Page 14 of 20
Table 1 2017 Groundwater Monitoring Well Results Gamma Activity (pCi/L)
Monitoring Well Sample Date MW9A MW10 MW-12 MW-13 MW14 MW15 MW16 lW15 lW16 MW17 MW18 MW19 MW20 03/14/17
<MDA
<MDA
<MDA 03/15/17 <MDA <MDA
<MDA <MDA <MDA
<MDA <MDA <MDA 04/13/17 OS/24/17 06/13/17
<MDA <MDA
<MDA 06/14/17 <MDA <MDA
<MDA <MDA <MDA
<MDA <MDA <MDA 06/22/17 '
09/12/17
<MDA
<MDA 09/13/17 <MDA
<MDA <MDA
<MDA <MDA 12/12/17
<MDA
<MDA
<MDA 12/13/17 <MDA <MDA
<MDA <MDA <MDA
<MDA <MDA <MDA Gamma Activity (pCi/L) Monitoring Well Sample Date TW6 TW7 TWlO 06/22/17 <MDA <MDA <MDA 06/27/17 <MDA <MDA <MDA 07/05/17 <MDA <MDA <MDA 07/11/17 <MDA <MDA <MDA 07/18/17 <MDA <MDA <MDA 07/25/17 <MDA <MDA <MDA 08/01/17 <MDA <MDA <MDA 08/08/17 <MDA <MDA <MDA 08/15/17 <MDA <MDA <MDA 08/22/17 <MDA <MDA <MDA 08/29/17 <MDA <MDA <MDA 09/05/17 <MDA <MDA <MDA 09/12/17 <MDA <MDA <MDA 09/18/17 <MDA <MDA <MDA 09/21/17 <MDA <MDA <MDA 09/25/17 <MDA <MDA <MDA 09/28/17
<MDA
<MDA = the concentration present was less than the minimum detectable activity Page 15 of 20
Table 1 2017 Groundwater Monitoring Well Results Tritium (pCilL)
Monitoring Well Sample Date
!W1 !W2 !W3 !W4 !W5 !W6 !W7 !W9 !W1O !W11 !W13 !W14 !W15 !W16 !W17 !W18 01/03/17
<553 <553 <553
<553 01/17/17 <599 <599
<599 <599 <599 <599 <599 2084 3569 01/24/17
<585 01/24/17
<585 01/24/17
<585 02/14/17 <662 <570 <570 <598 <598 998 <598 <598 <598 <598 <570 <570 2560 3570 <570 <598 03/14/17 <580 1094
<561 <561 <561 <561 979 <561 3132 968 04/13/17 843 <577 <577 <577 <596 <577 <577 1030 <577 <596 <589 <570 4746 6814 <589 <570 OS/24/17 <609 3213
<609 <609 <609 <609 <609 1981 5046 06/13/17 <593
<600 <581 <581 <600 <600
<588 6790 06/22/17 2024
<568 <568
<568 06/27/17
<593 <580
<576 07/05/17
<563 <555
<557 07/11/17
<528 <528
<528 07/18/17 <526 <526 <543 <526 <539 <522 <522 2223 936 <539 <543 <526 11522 <526 <543 <539 07/25/17
<526 <525
<528 14995 08/01/17
<542 <544 738 9259 08/08/17
<571 <567
<571 10114 08/15/17 1229
<553 <553 <553 <553 9144 08/22/17
<545 <545
<545 7112 08/29/17
<512 951
<509 1723 08/29/17 694 09/05/17
<528 971 569 4915 09/12/17 <501 1283
<551 2272 2196 <533 3067 09/13/17 2677 5121 09/18/17 726 1874
<530 09/21/17
<561 2201
<562 09/25/17
<526 2877
<526 2544 10833 09/28/17
<521 1644
<524 10/02/17 <562 2885
<544 1268 7755 <544
<544 2610 10/05/17
<526 <526 <526 <526 1987
<526 <526 <526 <526 10/10/17
<529 2458 5972 <528
<526 6885 <532 <518 10/12/17 1022 3248
<511 10/16/17 1423 3772
< 527 10/19/17
<514 <512 <514 1876 2147
<510 10/23/17 1948 1186
<513 10/26/17 1595 <537
<537 10/30/17 1061 1035
<539 11/02/17 1317 822
<529 11/07/17 1050
<536 1269 8520 3874 2985 11/13/17 668 1181 11/20/17
<526 <526 11/27/17
<530 1356 12/05/17 <555 1170
<555 1926 7258 646
<555 1636 6358 <555 12/12/17
<578 1096 12/19/17
<544 <544 Page 16 of 20
Figure 1 PALISADES NUCLEAR PLANT GROUNDWATER MONITORING WELL LOCATIONS j>r,I I.\\.I.f~ ~
=-1';;1'::..<;:..)::'
II
"~.
6H12
- Page 17 of 20 FelCELNE
':H'fi.. 'f ".
. a.-.:~_~i. ;~~~
- >(,;.q,,"]
,1.q,,,,
figure 4.1
- 15. Carbon-14 In 2010, PNP and other facilities participated in an EPRI task force to build a model to accurately estimate gaseous C-14 releases, given some key site-specific plant parameters (mass of the primary coolant, average thermal neutron cross section, rated MW, etc.). This work was completed in November 2010. The estimates for C-14 were constructed using the aforementioned EPRI methodology contained within EPRI 1021106, Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents. Using the C-14 curie estimates, the annual dose to man was derived from guidance contained within Regulatory Guide 1.109. The dose contribution of C-14 from liquid radioactive waste is much less than that contributed by gaseous radioactive waste and therefore the evaluation of C-14 in liquid radioactive waste is not required. Gaseous C-14 is reported as CO2 Curies because the major pathway by which C-14 contributes to the dose to man is by entering vegetables in the form of CO2 and then being ingested. The "total body" and the "bone" dose reported below is the maximum among the four age groups; Adult, Teenage, Child, Infant.
Annual C-14 release for PNP and subsequent doses for 2017:
Total Gaseous C-14 Released =
Effective Total Body Dose, C-14 =
Effective Bone Dose, C-14 =
7.4SE+00 Curies 2.24E+00 Curies 1.1SE-01 mrem S.7SE-01 mrem The quarterly curies released are provided in Table 1A, 1B, and 1C. Airborne doses due to C-14 are contained in Table 1A.
Page 18 of 20
- 16. Meteorological A meteorological monitoring report is generated semiannually. From January 1, 2017, to June 30, 2017, the meteorological data recovery was at 100%
for all variables. From July 1, 2017, to December 30, 2017, the meteorological data recovery was at 100% for all variables except for delta-T (temperature difference between the 10 meter and 60 meter height). Delta-T data recovery was 87.0%
from July 1, 2017, to December 30, 2017.
The two periods during which delta-T data was lost was from July 10 at 11 :00 through August 3 at 10:00 and from December 6 at 23:30 through December 18 at 15:15. Data from the second period was recovered. Data from the first period was not recoverable. The atmospheric stability for the first period was calculated using data from the 10-meter height.
Regulatory Guide 1.23 Revision 1, "Meteorological Monitoring Programs for Nuclear Power Plants" states that the goal of meteorological data recovery should be 90%
or greater. While this goal was not met for one parameter, delta-T, this does not adversely impact the Radiological Effluents Program. Meteorological data used for the Radiological Effluents Program is based upon a 10 year rolling average in accordance with Regulatory Guide 1.21 Revision 2, "Measuring, Evaluating, and Reporting Radioactive Material in Liquid and Gaseous Effluents and Solid Waste".
Data for 2017 trended consistent with past year's data. Also the atmospheric stability class was derived using other data for the period when delta-T data was not recoverable.
The two most frequently occurring wind directions from December 2016 through February 2017 was from the WNW and W sectors at the 1 O-meter level (accounting for 34% of the observations) and from the WNW and W sectors at the 60-meter level (accounting for 32% of the observations). During this period the mean wind speed was 3.91 m/s and 7.22 m/s at the 10 meter and 60 meter height respectively.
The two most frequently occurring wind directions from March 2017 through May 2017 was from the SE and NNW sectors at the 1 O-meter level (accounting for 27%
of the observations) and from the NNW and N sectors at the 60-meter level (accounting for 20% of the observations). During this period the mean wind speed was 3.67 m/s and 6.29 m/s at the 10 meter and 60 meter height respectively.
The two most frequently occurring wind directions from June 2017 through August 2017 was from the SSE and NNW sectors at the 1 O-meter level (accounting for 24% of the observations) and from the SW and NNW sectors at the 60-meter level (accounting for 21 % of the observations). During this period the mean wind speed was 2.15 m/s and 4.95 m/s at the 10 meter and 60 meter height respectively.
Page 19 of 20
The two most frequently occurring wind directions from September 2017 through November 2017 was from the SSE and SE sectors at the 10-meter level (accounting for 32% of the observations) and from the S and SSE sectors at the 60-meter level (accounting for 24% of the observations). During this period the mean wind speed was 2.85 m/s and 6.03 m/s at the 10 meter and 60 meter height respectively.
Data from this report and the annual meteorological data (Hourly Average Data or Joint Frequency Distribution) will be maintained on site and will be made available upon NRC request.
Page 20 of 20