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| Vacihc Northsest Laboratories P.O. Bos 999 RichlJnd. WJshmaton L5 A 9M52 Telephone iSh Telen 15-28N Mr. W. E. Thompson Fuel Cycle Technology Assessment Branch Nuclear Regulatory Commission | | Vacihc Northsest Laboratories P.O. Bos 999 RichlJnd. WJshmaton L5 A 9M52 Telephone iSh Telen 15-28N Mr. W. E. Thompson Fuel Cycle Technology Assessment Branch Nuclear Regulatory Commission |
| * Mail Stop 396-SS . | | * Mail Stop 396-SS . |
| Washington, D.C. 20555 . | | Washington, D.C. 20555 . |
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| ==Dear Bill:== | | ==Dear Bill:== |
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| All these factors appear at this point to be minor, so we therefore still have confidence that our measurement of radon release from the 27 mines that we have studied is reasonably representative of the uranium industry. These 27 mines are located in the Ambrosia Lake, Church Rock, and Mariano Lake area of 1787 317 50 Years of Service T 1929-1979 | | All these factors appear at this point to be minor, so we therefore still have confidence that our measurement of radon release from the 27 mines that we have studied is reasonably representative of the uranium industry. These 27 mines are located in the Ambrosia Lake, Church Rock, and Mariano Lake area of 1787 317 50 Years of Service T 1929-1979 |
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| | W.E. Thompson Nov.15,1979 page 2 New Mexico, the Uravan area _ of Colorado, the Moab area of Utah, and in the Four Corners region (Colorado, Utah, Arizona, and New Mexico). |
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| New Mexico, the Uravan area _ of Colorado, the Moab area of Utah, and in the Four Corners region (Colorado, Utah, Arizona, and New Mexico). | |
| The following information has been used in calculating the radon emission per RRY: | | The following information has been used in calculating the radon emission per RRY: |
| Total production from the 27 mines for 1978 (obtained from the DOE Grand Junction office) was 3,600,000 tons of uranium ore, 11,500,000 pounds of U3 0s (5215 metric tons) or 28.7 RRY for 182 metric tons | | Total production from the 27 mines for 1978 (obtained from the DOE Grand Junction office) was 3,600,000 tons of uranium ore, 11,500,000 pounds of U3 0s (5215 metric tons) or 28.7 RRY for 182 metric tons per RRY. , |
| * per RRY. ,
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| Our measurements of the total radon emission from these 27 mines is 151,000 curies of radon per year. | | Our measurements of the total radon emission from these 27 mines is 151,000 curies of radon per year. |
| 151,000 + 28.7 = 5261 curies of radon per RRY. (We'd round this to 5260.) | | 151,000 + 28.7 = 5261 curies of radon per RRY. (We'd round this to 5260.) |
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| Very truly yours, f0. kukw&W& | | Very truly yours, f0. kukw&W& |
| L. C. Schwendiman Atmospheric Sciences Department dj ]/g/ }]] | | L. C. Schwendiman Atmospheric Sciences Department dj ]/g/ }]] |
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| | . December 21, 1979 ALL POWER REACTOR LICENSEES ALL CONSTRUCTION PERMIT HOLDERS AND APPLICANTS Gentlemen: |
| . December 21, 1979 | |
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| ALL POWER REACTOR LICENSEES ALL CONSTRUCTION PERMIT HOLDERS AND APPLICANTS Gentlemen: | |
| The U. S. Nuclear Regulatory Comission (NRC) is proposing a change to the current regulation on radiological emergency response plans for nuclear production and utilization facilities. During the comment period on the proposed rule, the NRC staff intends to meet regionally with appropriate State and local officials and utility representatives to discuss the feasibility of the proposed rule, its impact and the procedures proposed for complying with its provisions. | | The U. S. Nuclear Regulatory Comission (NRC) is proposing a change to the current regulation on radiological emergency response plans for nuclear production and utilization facilities. During the comment period on the proposed rule, the NRC staff intends to meet regionally with appropriate State and local officials and utility representatives to discuss the feasibility of the proposed rule, its impact and the procedures proposed for complying with its provisions. |
| Briefly, the proposed rule would: | | Briefly, the proposed rule would: |
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| December 21, 1979 Since we are working in a short time frame, I ask that by December 31, . | | December 21, 1979 Since we are working in a short time frame, I ask that by December 31, . |
| you notify Mr. Allan Morrongiello, Office of Standards Development, (301) 443-5966 and give the name of your representative, his or her position, address and telephone number. - | | you notify Mr. Allan Morrongiello, Office of Standards Development, (301) 443-5966 and give the name of your representative, his or her position, address and telephone number. - |
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| ==Enclosures:== | | ==Enclosures:== |
| : 1. Federal Register Notice | | : 1. Federal Register Notice |
| : 2. Agenda 3 Schedule | | : 2. Agenda 3 Schedule t |
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Category:CORRESPONDENCE-LETTERS
MONTHYEARML20133E7091985-09-27027 September 1985 Concurs in Rescinding Subagreements 1 & 2 Re Review of Skagit/Hanford Nuclear Project,Units 1 & 2,in Response to 850820 Memo ML20137F7551985-08-20020 August 1985 Requests Concurrence to Rescind Encl Subagreements 1 & 2,as Amended,Effective 850930,based on 840123 Termination of License Application IR 05000523/20060051985-08-0606 August 1985 Forwards Enhanced Team Operational Insp Rept 50-528/85-12 on 850523-0605 & 0716.No Violations Noted ML20107F8571985-02-20020 February 1985 Requests Itemized Listing of Actual NRC Expenditures for Prof Staff Hrs & Contractual Supprot Svc Associated W/Review of Withdrawn CP Application,In Response to .Extension of 850205 Due Date for Payment Also Requested ML20076L4381983-07-12012 July 1983 Concurs w/830624 Proposal Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl ML20076N2951983-07-12012 July 1983 Concurs W/Proposal in Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl.Related Correspondence ML20076K2631983-06-30030 June 1983 Comments on Proposed Rule 10CFR50 Re NRC Policy Statements on Severe Accidents & Related Views on Nuclear Reactor Regulation ML20076K3681983-06-30030 June 1983 Comments on Proposed Rules 10CFR50 & 51 Re Requirements for Licensee Actions on Disposition of Spent Fuel Upon Expiration of OLs ML20076K3761983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20076K3861983-06-30030 June 1983 Comments on NRC Policy Statement on Evaluation Plan for Safety Goal Development Program ML20076K4101983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20071L9521983-05-25025 May 1983 Requests Current Suspension of Federal & State Licensing Proceedings Continue Until mid-Sept 1983 to Consider Licensing Alternatives ML20071B9341983-02-18018 February 1983 Commits to Conduct Proposed Addl Investigations of May Junction Monocline Similar to Investigations Identified as Phases III & IV in Util ML20028C9371983-01-11011 January 1983 Forwards Affidavits of Svc for Amend 8 to Application for Site Certification/Environ Rept & Amend 29 to PSAR ML20065B2401983-01-10010 January 1983 Questions Why Vital Resources of ACRS Will Be Wasted on Technical Meeting for Proposed Project in Light of Financial & Planning Disaster Associated W/Const ML20064D2811982-12-27027 December 1982 Forwards Amend 29 to Psar.Info Relevant to Diesel Generator Design Provisions for Accommodating Dust & Ashfull ML20064D7261982-12-14014 December 1982 Forwards Amend 8 to Application for Site Certification/ Environ Rept,Responding to Wa State Energy Facility Site Evaluation Council Comments on Amend 6 ML20070D0031982-12-0808 December 1982 Forwards Suppl to 820222 Response to Request for Info Re Unresolved Safety Issue A-39 Concerning Safety Relief Valve Pool Dynamic Loads,Per NUREG-0802,NUREG-0783 & NUREG-0763 ML20028B3001982-11-24024 November 1982 Forwards Proposed Hearing Schedule for Consideration at 821202 Prehearing Conference.Related Correspondence ML20027E8061982-11-10010 November 1982 Comments on Amend 6 to Environ Rept,Listing Previously Identified Concerns Not Adequately Addressed in Rept.Issues Include Cooling Water Intake Structures,Accumulation of Heavy Metals in Fishes & Use of Sodium Hypochlorite ML20066E0731982-11-0909 November 1982 Forwards Affidavit of Svc for Amend 28 to PSAR ML20027E6531982-11-0808 November 1982 Proposes Schedule for ASLB Hearing on Health & Safety Issues & Energy Facility Site Evaluation Council Issues & for ASLB Council Joint Hearings.Related Correspondence ML20027E6471982-11-0808 November 1982 Advises That Util Has Reconsidered & Will Modify Intake Design to Limit Intake Screen Openings to 1/8-inch While Preserving Option of Using 3/8-inch Openings.Related Correspondence ML20027E6601982-11-0303 November 1982 Advises That Joint Nrc/Energy Facility Site Evaluation Council Fes Will Be Issued on 830301.Schedule Change Due to Decision to Include Northwest Power Planning Council Electrical Energy Forecast Info ML20065Q0521982-10-22022 October 1982 Forwards Affidavit of Svc Certifying Distribution of PSAR Amend 27 to Listed Persons on 821020 ML20065P1701982-10-19019 October 1982 Requests All Parties Be Informed of Natl Wildlife Federation & or Environ Council Correct Address ML20023A7601982-10-15015 October 1982 Forwards Final Draft of Amend 28 to Psar,Consisting of Responses to NRC Questions 231.5,231.14 & 231.15,revisions to PSAR Section 2.5 & Apps 2K & 2R.W/25 Oversize Figures. Aperture Cards Are Available in PDR ML20065T8721982-10-15015 October 1982 Forwards Amend 28 to Psar,Responding to NRC Questions 231.5,231.14 & 231.15 Re May Junction Monocline.Amend Also Revises PSAR Section 2.5 & Apps to Include Results of Work on Southeast Anticline ML20028A2701982-10-12012 October 1982 Forwards Util 820916 Ltr to DOE & DOE 820929 Response Re Proposed Exclusion Area Boundary for Project ML20065M6241982-10-0808 October 1982 Forwards Amend 27 to PSAR ML20063P2101982-10-0707 October 1982 Forwards Affidavit of Svc for Amend 7 to Application for Site Certification/Environ Rept ML20065F5711982-09-27027 September 1982 Forwards Affidavit of Svc for Amend 6 to Application for Site Certification/Environ Rept ML20063N7781982-09-16016 September 1982 Forwards Amend 7 to Application for Site Certification/ Environ Rept.Amend Revises Info Re need-for-power, Alternative Energy Sources,Socioeconomics & Exclusion Area Boundary.Verification & Distribution List Encl ML20027B3361982-09-10010 September 1982 Forwards Comments on Des for Facility.Socioeconomic Impacts of Facility Operation Must Be Evaluated on Regional Basis ML20065B0121982-09-0909 September 1982 Reply to to Wa State Energy Facility Site Evaluation Council.Date of 821216 Is for Probable Release of Fes Not Des.Util Plans to File Amend 7 to Asc Environ Rept ML20064P0591982-09-0202 September 1982 Forwards Response to Comments on Des,Per NRC 820722 Request. Uncertainties Re March & Corral Codes in Calculating Accident Probabilities Do Not Invalidate Use of Codes ML20063K7971982-09-0101 September 1982 Forwards Affidavit of Svc for Amend 26 to PSAR ML20063L1551982-08-30030 August 1982 Requests That All Correspondence Re Facility Be Addressed to Mv Stimac at Listed Address ML20076K2831982-08-30030 August 1982 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceeding ML20064M7651982-08-20020 August 1982 Forwards Amend 6 to Application for Site Certification/ Environ Rept.Amend Addresses Wa State Energy Facility Site Evaluation Council Application Completeness Review,Comments on Des (NUREG-0894) & Changes Resulting from NPDES Hearing ML20063B1101982-08-16016 August 1982 Forwards Amend 26 to PSAR ML20055C0881982-08-0404 August 1982 Discusses Resolution of Final Geology Concern Re May Junction Monocline.Investigations Yielded No Evidence of Faults Associated W/Fold.Investigative Program Discussed at 820721 Meeting W/Nrc Will Take Approx 8 Wks to Complete ML20062H1741982-08-0404 August 1982 Forwards Request for Addl Info to Confirm Presence or Absence of Potentially Hazardous Geologic Structure within 5 Miles of Site ML20071L1621982-07-27027 July 1982 Advises That Distribution Lists Should Be Updated by Replacing R Lowenstein W/Dg Powell ML20063G7021982-07-26026 July 1982 Forwards Util Responding to NRC 820624 Questions Re Need for Power Issue ML20071L1511982-07-22022 July 1982 Notifies That as Result of Review of Seismic & Geologic Data for Facility,Addl Work Is Necessary to Evaluate May Junction Lineation Near Site ML20062B5071982-07-22022 July 1982 Forwards Comments Received Re Facilities Des.Responses to Comments Expected by 820811 ML20058E2671982-07-21021 July 1982 Confirms Conversation W/Nrc That Future Correspondence Re Facilities Should Be Addressed to Rv Myers ML20058E3671982-07-20020 July 1982 Comments on Des.Insufficient Info Available Re Cooling Water Intake & Discharge Structure Const to Permit Adequate Evaluation ML20058C3801982-07-19019 July 1982 Forwards Affidavit of Svc of Amend 24 Errata to PSAR 1985-09-27
[Table view] Category:INCOMING CORRESPONDENCE
MONTHYEARML20137F7551985-08-20020 August 1985 Requests Concurrence to Rescind Encl Subagreements 1 & 2,as Amended,Effective 850930,based on 840123 Termination of License Application ML20107F8571985-02-20020 February 1985 Requests Itemized Listing of Actual NRC Expenditures for Prof Staff Hrs & Contractual Supprot Svc Associated W/Review of Withdrawn CP Application,In Response to .Extension of 850205 Due Date for Payment Also Requested ML20076L4381983-07-12012 July 1983 Concurs w/830624 Proposal Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl ML20076N2951983-07-12012 July 1983 Concurs W/Proposal in Re Issuance of Fes.Schedule Should Be Determined Following Selection of Licensing Alternative or After Prehearing Schedule Reestablished.Svc List Encl.Related Correspondence ML20076K2631983-06-30030 June 1983 Comments on Proposed Rule 10CFR50 Re NRC Policy Statements on Severe Accidents & Related Views on Nuclear Reactor Regulation ML20076K3681983-06-30030 June 1983 Comments on Proposed Rules 10CFR50 & 51 Re Requirements for Licensee Actions on Disposition of Spent Fuel Upon Expiration of OLs ML20076K3761983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20076K3861983-06-30030 June 1983 Comments on NRC Policy Statement on Evaluation Plan for Safety Goal Development Program ML20076K4101983-06-30030 June 1983 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceedings ML20071L9521983-05-25025 May 1983 Requests Current Suspension of Federal & State Licensing Proceedings Continue Until mid-Sept 1983 to Consider Licensing Alternatives ML20071B9341983-02-18018 February 1983 Commits to Conduct Proposed Addl Investigations of May Junction Monocline Similar to Investigations Identified as Phases III & IV in Util ML20028C9371983-01-11011 January 1983 Forwards Affidavits of Svc for Amend 8 to Application for Site Certification/Environ Rept & Amend 29 to PSAR ML20065B2401983-01-10010 January 1983 Questions Why Vital Resources of ACRS Will Be Wasted on Technical Meeting for Proposed Project in Light of Financial & Planning Disaster Associated W/Const ML20064D2811982-12-27027 December 1982 Forwards Amend 29 to Psar.Info Relevant to Diesel Generator Design Provisions for Accommodating Dust & Ashfull ML20064D7261982-12-14014 December 1982 Forwards Amend 8 to Application for Site Certification/ Environ Rept,Responding to Wa State Energy Facility Site Evaluation Council Comments on Amend 6 ML20070D0031982-12-0808 December 1982 Forwards Suppl to 820222 Response to Request for Info Re Unresolved Safety Issue A-39 Concerning Safety Relief Valve Pool Dynamic Loads,Per NUREG-0802,NUREG-0783 & NUREG-0763 ML20028B3001982-11-24024 November 1982 Forwards Proposed Hearing Schedule for Consideration at 821202 Prehearing Conference.Related Correspondence ML20027E8061982-11-10010 November 1982 Comments on Amend 6 to Environ Rept,Listing Previously Identified Concerns Not Adequately Addressed in Rept.Issues Include Cooling Water Intake Structures,Accumulation of Heavy Metals in Fishes & Use of Sodium Hypochlorite ML20066E0731982-11-0909 November 1982 Forwards Affidavit of Svc for Amend 28 to PSAR ML20027E6531982-11-0808 November 1982 Proposes Schedule for ASLB Hearing on Health & Safety Issues & Energy Facility Site Evaluation Council Issues & for ASLB Council Joint Hearings.Related Correspondence ML20027E6601982-11-0303 November 1982 Advises That Joint Nrc/Energy Facility Site Evaluation Council Fes Will Be Issued on 830301.Schedule Change Due to Decision to Include Northwest Power Planning Council Electrical Energy Forecast Info ML20065Q0521982-10-22022 October 1982 Forwards Affidavit of Svc Certifying Distribution of PSAR Amend 27 to Listed Persons on 821020 ML20065P1701982-10-19019 October 1982 Requests All Parties Be Informed of Natl Wildlife Federation & or Environ Council Correct Address ML20065T8721982-10-15015 October 1982 Forwards Amend 28 to Psar,Responding to NRC Questions 231.5,231.14 & 231.15 Re May Junction Monocline.Amend Also Revises PSAR Section 2.5 & Apps to Include Results of Work on Southeast Anticline ML20023A7601982-10-15015 October 1982 Forwards Final Draft of Amend 28 to Psar,Consisting of Responses to NRC Questions 231.5,231.14 & 231.15,revisions to PSAR Section 2.5 & Apps 2K & 2R.W/25 Oversize Figures. Aperture Cards Are Available in PDR ML20028A2701982-10-12012 October 1982 Forwards Util 820916 Ltr to DOE & DOE 820929 Response Re Proposed Exclusion Area Boundary for Project ML20065M6241982-10-0808 October 1982 Forwards Amend 27 to PSAR ML20063P2101982-10-0707 October 1982 Forwards Affidavit of Svc for Amend 7 to Application for Site Certification/Environ Rept ML20065F5711982-09-27027 September 1982 Forwards Affidavit of Svc for Amend 6 to Application for Site Certification/Environ Rept ML20063N7781982-09-16016 September 1982 Forwards Amend 7 to Application for Site Certification/ Environ Rept.Amend Revises Info Re need-for-power, Alternative Energy Sources,Socioeconomics & Exclusion Area Boundary.Verification & Distribution List Encl ML20027B3361982-09-10010 September 1982 Forwards Comments on Des for Facility.Socioeconomic Impacts of Facility Operation Must Be Evaluated on Regional Basis ML20065B0121982-09-0909 September 1982 Reply to to Wa State Energy Facility Site Evaluation Council.Date of 821216 Is for Probable Release of Fes Not Des.Util Plans to File Amend 7 to Asc Environ Rept ML20064P0591982-09-0202 September 1982 Forwards Response to Comments on Des,Per NRC 820722 Request. Uncertainties Re March & Corral Codes in Calculating Accident Probabilities Do Not Invalidate Use of Codes ML20063K7971982-09-0101 September 1982 Forwards Affidavit of Svc for Amend 26 to PSAR ML20063L1551982-08-30030 August 1982 Requests That All Correspondence Re Facility Be Addressed to Mv Stimac at Listed Address ML20076K2831982-08-30030 August 1982 Comments on Des for Skagit/Hanford Nuclear Plant.Eis Flawed in Scope & Content & Fails to Recognize Existence of Yakima Indian Nation.No Significant Adverse Impact Addressed.Comment May Not Be Used in Proceeding ML20064M7651982-08-20020 August 1982 Forwards Amend 6 to Application for Site Certification/ Environ Rept.Amend Addresses Wa State Energy Facility Site Evaluation Council Application Completeness Review,Comments on Des (NUREG-0894) & Changes Resulting from NPDES Hearing ML20063B1101982-08-16016 August 1982 Forwards Amend 26 to PSAR ML20055C0881982-08-0404 August 1982 Discusses Resolution of Final Geology Concern Re May Junction Monocline.Investigations Yielded No Evidence of Faults Associated W/Fold.Investigative Program Discussed at 820721 Meeting W/Nrc Will Take Approx 8 Wks to Complete ML20071L1621982-07-27027 July 1982 Advises That Distribution Lists Should Be Updated by Replacing R Lowenstein W/Dg Powell ML20063G7021982-07-26026 July 1982 Forwards Util Responding to NRC 820624 Questions Re Need for Power Issue ML20071L1511982-07-22022 July 1982 Notifies That as Result of Review of Seismic & Geologic Data for Facility,Addl Work Is Necessary to Evaluate May Junction Lineation Near Site ML20058E2671982-07-21021 July 1982 Confirms Conversation W/Nrc That Future Correspondence Re Facilities Should Be Addressed to Rv Myers ML20058E3671982-07-20020 July 1982 Comments on Des.Insufficient Info Available Re Cooling Water Intake & Discharge Structure Const to Permit Adequate Evaluation ML20058C3801982-07-19019 July 1982 Forwards Affidavit of Svc of Amend 24 Errata to PSAR ML20055B4681982-07-16016 July 1982 Forwards Responses to Questions Re Need for Power Issue. Revised Section to Application for Site Certification & Environ Rept Currently Being Developed Addressing Available Forecasts Consistent W/Draft Regional Power Plan ML20069C7651982-07-15015 July 1982 Advises That Data Sys Contains No Info Re Plant Species Habitats or Native Plant Communities in Site Vicinity.Info Re Animal Species Will Be Provided Under Separate Cover ML20054M1521982-07-0808 July 1982 Comments on Des Re Const of Facilities ML20063D7781982-07-0202 July 1982 Forwards Analysis of Probability of Accident Involving Truck Shipment of Anhydrous Ammonia.Results Indicated Probability of Spill Simultaneously W/Radiological Release Exceeding 10CFR100 So Low That Control Room Detectors Not Justified ML20054M6981982-07-0202 July 1982 Forwards Amend 25 to PSAR Providing Info on Soils,Soil Structure Interaction Analysis & Site Boundary Turbine Shine Dose & Reflecting Removal of Ammonia Detectors in Control Rooms 1985-08-20
[Table view] Category:RESEARCH INSTITUTION/LABORATORY TO NRC
MONTHYEARML17276B0731982-02-10010 February 1982 Comments on Const of Two Power Reactors by Skagit/Hanford Nuclear Project at Hanford.Purchasing & Finishing Terminated Wppss Plants at Hanford & Satsop Should Be Considered as One Alternative to Proposed Action ML19290C5831979-11-15015 November 1979 Submits Latest Results of Radon Releases from Underground U Mines.Contains Research Measurements Indicating That Radon Emission Seems to Be Independant of Activity within U Mines 1982-02-10
[Table view] |
Text
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6 November 15, 1979 4
Vacihc Northsest Laboratories P.O. Bos 999 RichlJnd. WJshmaton L5 A 9M52 Telephone iSh Telen 15-28N Mr. W. E. Thompson Fuel Cycle Technology Assessment Branch Nuclear Regulatory Commission
Washington, D.C. 20555 .
Dear Bill:
RAD 0N EMISSION FROM UNDERGROUND URANIUM MINES This letter is to confirm our telephone conversation of November 14 regard-ing radon releases from underground mines. I told you of our conclusions regarding radon release per RRY based on many additional radon measurements in 27 mines which included the mir's used in PNL-2888 Rev. It is important to remember, in perspective, that the calculated curies per RRY are wholly contingent on knowledge of U3 08 production from individual mines in the sample. The ore production listed in Table IV, PNL-2888 Rev. for the seven mines was obtained from the mine management. We accepted and used these mine production data and the estimate of 0.2% 3U 0s in the ore to arrive at the value of 15.9 Ci exhausted in ventilation air per ton of U 03 8 produced.
At this point, we have made direct measurements of the radon emission from 27 underground uranium mines, (including those mines in Table IV, PNL-2888 Rev.)
whose production constitutes 59% of the 1978 U.S. production from underground uranium mining. With these data, we feel that we are in a reasonably good position to estimate the curies of radon per RRY from underground uranium mining in the U.S. We must caution, however, that there are still a few assump-tions that need to be verified before our best estimate can be made.
These include the fact that radon emission seems to be independent of activity within the uranium mines. Data on radon emission versus time from uranium mine vents are being analyzed to determine variations with time that occur. There may be some significant seasonal variation in radon emission and this is also being investigated. Other factors which affect our estimate involve the fact that some uranium mines are being ventilated although there is no ore produc-tion taking place. The reason for this is apparent that these mines have connections with other underground mines which are being worked and ventilation is therefore required to avoid seepage of radon into active uranium mines.
All these factors appear at this point to be minor, so we therefore still have confidence that our measurement of radon release from the 27 mines that we have studied is reasonably representative of the uranium industry. These 27 mines are located in the Ambrosia Lake, Church Rock, and Mariano Lake area of 1787 317 50 Years of Service T 1929-1979
W.E. Thompson Nov.15,1979 page 2 New Mexico, the Uravan area _ of Colorado, the Moab area of Utah, and in the Four Corners region (Colorado, Utah, Arizona, and New Mexico).
The following information has been used in calculating the radon emission per RRY:
Total production from the 27 mines for 1978 (obtained from the DOE Grand Junction office) was 3,600,000 tons of uranium ore, 11,500,000 pounds of U3 0s (5215 metric tons) or 28.7 RRY for 182 metric tons per RRY. ,
Our measurements of the total radon emission from these 27 mines is 151,000 curies of radon per year.
151,000 + 28.7 = 5261 curies of radon per RRY. (We'd round this to 5260.)
This value of 5260 curies of radon per RRY is for radon emission in the vents from uranium mines. In addition, we estimate that 100 curies of radon per RRY will be emitted from aboveground ore storage at the mine mouths. Thus, our best estimate is 5360 curies of radon per RRY from underground uranium mining.
The back-up documentation for these numbers is being included in our next topical report on underground mining which is currently being prepared.
The large difference in this curies of radon per RRY value compared with our earlier value of 3340 curies of radon per RRY in NUREG/CR-0627 (PNL-2888 Rev.)
September 1979, is due to the lower average current production for this group of mines compared to the production cited by the mine managers for October,1976 and which we used for arriving at the radon release per RRY. In checking with the mine operator for each of these seven mines, it appears that there actually has been a substantial decreas.e in production rates over the past three years.
This decrease in production may have taken place slowly over a period of time.
We did make numerous attempts to obtain production rates during these series of measurements but were only able to obtain this information for Mines 1 and 2 which are listed in Table IV of the above report.
The earlier curies of radon per RRY value is thus based on the information which we were able to obtain from the mine operators provided to NRC by the mine operators in 1976. We do feel now that the information from the DOE Grand Junction office is as reliable as can be obtained and therefore, we feel that our current estimate of 5360 curies of radon ~per RRY will not be subject to a .
major modification as we obtain further information in this study.
Very truly yours, f0. kukw&W&
L. C. Schwendiman Atmospheric Sciences Department dj ]/g/ }]]
+
p ss' **Gy
% UN!TED STATES E. g vc'h NUCLEAR REGULATORY COMMISSION
- \ C W ASHINGTON, D. C. 20555 s
g v /j! 'r
. December 21, 1979 ALL POWER REACTOR LICENSEES ALL CONSTRUCTION PERMIT HOLDERS AND APPLICANTS Gentlemen:
The U. S. Nuclear Regulatory Comission (NRC) is proposing a change to the current regulation on radiological emergency response plans for nuclear production and utilization facilities. During the comment period on the proposed rule, the NRC staff intends to meet regionally with appropriate State and local officials and utility representatives to discuss the feasibility of the proposed rule, its impact and the procedures proposed for complying with its provisions.
Briefly, the proposed rule would:
(1) Require an NRC licensee to shut down a nuclear power reactor if appropriate State and local emergency response plans have not received NRC concurrence or do not warrant continued NRC concurrence.
(2) Require that State and local emergency response plans be concurred in by the NRC as a condition of operating license issuance.
(3) Require extending emergency planning considerations to the emergency planning zones (i.e., within the approximate 10 and 50 mile radii around the plant).
(4) Require that detailed emergency planning implementing procedures be submitted to NRC for review.
(5) Require informing the public and improving support for local emergency response personnel.
NRC will be holding its workshop for States in your region in c.cordance with the enclosed schedule. I invite you to designate one individual to
, represent your views during discussions among State, local, utility, NRC and FEMA participants.
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December 21, 1979 Since we are working in a short time frame, I ask that by December 31, .
you notify Mr. Allan Morrongiello, Office of Standards Development, (301) 443-5966 and give the name of your representative, his or her position, address and telephone number. -
It is our view that this proposed rule is a significant step to providing needed protection in the event of an accident at a nuclear facility. I look forward to your participation in this important meeting.
For your information, I am enclosing the Federal Register notice of the proposed rule and the agenda for the January workshops.
Sincerely, [
s-
/ - /
4,,, /he Brian K. Grimes, Director Emergency Preparedness Task Group Office of Nuclear Reactor Regulation
Enclosures:
- 1. Federal Register Notice
- 2. Agenda 3 Schedule t
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