ML17191B267

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Forwards Revs to Dresden,Quad Cities,Zion,Lasalle,Byron & Braidwood Station Odcm,Current as of 981231.ODCM Manual & Summary of Changes,Included
ML17191B267
Person / Time
Site: Dresden, Byron, Braidwood, Quad Cities, Zion, LaSalle  Constellation icon.png
Issue date: 03/12/1999
From: Krich R
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17191B268 List:
References
NUDOCS 9903180273
Download: ML17191B267 (32)
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Commonwealth Edison c~...,p:iny 1400 Opus Place Downers Gro\\*e, IL 60515-5701 ComEd March 12, 1999 U. S. Nuclear Regulatory Commission ATTN: Document Control Qesk Washington, D. C. 20555-0001

Subject:

Braidwood Station, Units 1 and~

Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN-456 and STN 50-457 Byron Station, Units 1 and 2 Facility Operating License' Nos. NPF-37 and NPF-66 NRC Docket Nos. STN-454 and STN 50-455 Dresden Nuclear Power Station; Units 1, 2, and 3 Facility Operating License Nos. DPR-2, DPR-19, and DPR-25 NRC Docket Nos.50-010'. 50-237 and 50-249 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 Quad Cities Nuclear Power Station, Units 1 and 2 Facility Operating License Nos. DPR-29 and DPR-30

  • NRC Docket Nos. 50-254 and 50-265 Zion Nuclear Power Station, Units 1 and 2 Facility Operating License Nos. DPR-39 and DPR-48 NRC Docket Nos. 50-295 and 50-304 Offsite Dose Calculation Manual Changes for 1998 Pursuant to 1 O CFR 50.4, a summary of the changes made to the Commonwealth Edison (ComEd) Company Offsite Dose Calculation Manual (ODCM) during the period of January through December 1998 is provided in Attachment I. Technical Specification (TS) 5.5.1 for Braidwood and Byron Stations, TS 6.14 for Dresden and Quad Cities Nuclear Power Stations, TS 6.8 for LaSalle County Station, and TS 6.7 for Zion Nuclear Power Station require a copy of the entire ODCM to be submitted to the NRC as a part of, or concurrent with, the Radioactive Effluent Release Report. A copy of the entire.

ComEd ODCM, current as of December 31, 1998, is provided in Attachment II. The Radioactive Effluent Release Reports are being submitted separately.

9903180273 990312 PDR ADOCK 05000010

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A Unicom Company

.. March 12, 1999 U.S. Nuclear Regulatory Commission

  • Page2 Should you have any questions concerning this letter, please contact Mr. J. A. Bauer at (630) 663-7287.

Respectfully, ca~

for R. M. Krich Vice President - Regulatory Services Attachment I: Summary of Changes to Site Annexes of the ODCM Attachment II: ComEd ODCM cc:

Regional Administrator - NRC Region Ill NRC Senior Resident Inspector-Braidwood Station NRC Senior Resident Inspector - Byron Station NRC Senior Resident Inspector - Dresden Nuclear Power Station NRC Senior Resident Inspector - LaSalle County Station NRC Senior Resident Inspector - Quad Cities Nuclear Power Station

ATTACHMENT I Summary of Changes to Site Annexes of the _ODCM g:\\ODCM_Rao\\NRC Report 99\\Change Summaries.doc

ATTACHMENT I Summary of Off site Dose Calculation Manual CO DCM) Changes by Station:

Station Chapter. Revision Number Revision Date Braidwood Chapter 10, Revision 2 August 1998 Chapter 11, Revision 2 August 1998 Chapter 12, Revision 4 August 1998 Appendix F, Revision 3 August 1998 Byron

  • Chapter 10, Revision 1.4 October 1998 Chapter 11, Revision 1.6 October 1998 Dresden Chapter 11, Revision 1.4 May 1998 Chapter 12, Revision 1. 7 April 1998 Chapter 12, Revision 1.8 July 1998 LaSalle Chapter 10, Revision 1.9 April 1998 Chapter 11, Revision 2 April.1998 Chapter 12, Revision 1.9 April1998 Quad Cities Chapter 11, Revision 1.9 December 1998 Chapter 12, Revision 1.9 December 1998 Zion Chapter 10, Revision 2 March 1998 Chapter 12, Revision 2 March 1998
  • Chapter 12, Revision 3

. July 1998 g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

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BRAIDWOOD STATION g:IODCM_Rao\\NRC Rapi>rt 99\\Change Summaries.doc

Braidwood Station Chapter 10 Change Summary ODCM Revision 2, August 1998 Page Change Description 10-i Updated revision number.

10-5 Removed volume of release tanks. The volume of the tanks is given in Updated Final Safety Analysis Report (UFSAR) Section 11.5.2.3.1 (i.e., 30,000 gallons).

  • 10-13, Updated figures to electronic format.

10-14, 10-15,.

10-16, 10-17 g:IOOCM_Rao\\NRC Report 99\\Changa Summaries.doc

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Braidwood Station Chapter 11 Change Summary ODCM Revision 2, August 1998 Page Change Description 11-i Updated revision number.

11-5 Corrected sector location from N" to "SSW."

. 11-6 Removed special interest Thermoluminescent Dosimeter (TLD) locations.

These locations are not Radiological Environmental Monitoring Program

<R:EMP) related and are for station information use oiily. Added address to sample sites BD-34, 35, 36, and 37 to ensure samples are taken from the correct location. Corrected estimated distance of sample site BD-22 from station.

11-7

. Added address to sample sites BD-17 and 18 to ensure samples are taken from the correct location.

l l-8

. Added wording "if available" in case food products are not available.

11-10, Updated figures to electronic format.

11-11, 11-12 g:IO.DCM_Rao\\NRC Report 99\\Chenge Summaries.doc

Braidwood Station Chapter 12 Change Summary ODCM Revision 4, August 1998 (Page 1 of3)

Page 12-i 12-ii 12-iii, 12-iv 12-1 12-2, 12-3 12-4, 12-5, 12-6 Change Description Added wording indicating how Improved Technical Specification is annotated and when the references become effective.

Updated revision number.

Updated page numbers to reflect changes in text.

Added Improved Technical Specification reference.

Added Improved Technical Specification and/or Technical Requirements Manual reference. Corrected formatting of Code of Federal Regulations references.

Added definition for Continuous Sampling, this will allow for filter changes of Radiological Effluent Technical Specification (RETS) monitors without having to do alternate monitoring. Added Improved Technical Specification reference.

Updated definition numbers.

12-7 Added Improved Technical Specification reference.

12-8 Corrected formatting of Code of Federal Regulations references.

12-10 Reworded for clarification when releases are to be suspended. Added notation to clarify that an explanation in the next Radioactive Effluent Report is required when the monitor is not operational within the time specified in the ODCM.

Capitalized "OR" for better clarification.

12-12 Capitalized "OR" for better Clarification.

12-13 Corrected formatting of Code of Federal Regulations references.

12-16 Reworded for clarification when relea5es are to be suspended. Added notation to clarify that an explanation in the.next Radioactive Effluent Report is required when the monitor is not operational within the time specified in the ODCM.

g:IODCM_Rao\\NRC Report 99\\Change Summariea.dOc:

Braidwood Station Chapter 12 Change Summary ODCM Revision 4, August 1998 (Page 2of3)

Page 12,.18 12-19 12-20 12-24, 12-25 12-26 12-27 12-29 12-30 12-31 12-34 12-35 Change Description Added additional table notation to the Gas Decay Tank System to reference monitor loss of sample flow description.

Capitalized "OR" for better clarification. Removed reference to functional unit 6 for the RE-PR009 radiation monitor. Added channel check information.

Corrected formatting of Code of Federal Regulations references. Corrected numbering of surveillance requirements.

Changed formatting of exponent in the lower limit of detection (LLD) equation.

Added additional information for the requirements or other gamma peaks that are identifiable. Corrected typographical error.

Changed reference to Technical Specification 6.9.2 to 10CFR50 Appendix I, Section IV.A. Corrected formatting of Code of Federal Regulations references.

Corrected numbering of surveillance requirements.

Corrected formatting _of Code of Federal Regulations references.

Corrected numbering of surveillance requirements.

Changed formatting of exponent in the LLD equation.

Changed formatting of exponent in the LLD equation. Corrected typographical error.

12-37 Corrected formatting of Code of Federal Regulations references.. Changed reference to Technical Specification 6.9.2 to 10CFR50 Appendix I, Section IV.A.

12-38 Corrected formatting of Code of Federal Regulations references.

g:IOOCM_Rao\\NRC Report 99\\Change Summaries.doc

Braidwood Station

~

Chapter 12 Change Summary

. ODCM Revision 4, August 1998 (Page 3 of 3)

Page 12-39 40 12-41 12-42 12,.43 12-44, 12-45 12-46 12-47 Change Description Corrected formatting of Code of Federal Regulations references. Changed reference to Technical Specification 6.9.2 to 10CFR50. Appendix I, Section l\\T.A.

. Corrected formatting of Code of Federal Regulations references.

Changed reference to Technical Specification 6.9.2 to 10CFJ.l50 Appendix I, Section l\\T.A. Corrected numbering of surveillance requirements.

Corrected formatting of Code of Federal Regulations references.

Corrected numbering of surveillance requirements. Removed reference to Technical Specification 6.9.2. This is a 1 OCFR20 special report. Added information regarding storage of the Unit 1 Old Steam Generators.

Added information regarding storage of the Unit 1 Old Steam Generators.

Corrected formatting ofCode of Federal Regulations references.

Removed reference to Technical Specification. This is governed by 1 OCFR20 and 40CFR190. Added limit of2 mrem in 12.4.6.A.2.

Changed reference to Technical Specification 6.9.2to10CFR50 Appendix I;.. ~

Section l\\T.A.

12-48 Corrected formatting of Code of Federal Regulations references.

12-60 Corrected formatting of Code of Federal Regulations references.

12-61 Corrected formatting of Code of Federal Regulations references.

12-62 Added Improved Technical Specification reference.

12-63.

Corrected formatting of Code of Federal Regulations referel;lces.

12-64 Added Improved Technical Specification reference.

12-65 Added reference to UFSAR Chapter 17.

12-66 Corrected punctuation.

g:IODCM_RaolNRC Report 99\\Change Summaries.doc

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Braidwood Station Appendix F Change Summary ODCM Revision 3, August 1998 Page F-i F-2 F-5 F-6, F-7 F-8 F-24 F-45, F-46 Change Description Updated revision number.

Added Improved Technical Specification for Limits on Radioactivity in Unprotected Outdoor Tanks.

Added "vent" to Note b to ensure consistency of mixed mode release definition.

Updated notation of exponent"**" to "A.

Added "vent" to Note to ensure consistency of mixed mode release definition.

Updated notation of exponent"**" to "A.

  • Added "vent" to table header to ensure consistency of mixed mode release definition. Updated notation of exponent"**" to "A.

. Added "vent" to Note b to ensure consistency of mixed mode release definition.

Updated figures to electronic format.

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

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BYRON STATION

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g:IOOCM_Rao\\NRC Report 99\\Change Summaries.doc

Byron Station Chapter l 0 Change Summary ODCM Revision 1.4, October 1998 Page 10-i 10-ii 10-iii

. 10-3 10-7 10-9 Change Description Updated revision number.

Updated page number references.

Updated page number references.

Removed Component Cooling Water Monitor description from Section 10.1.2, Airborne Process Radiation Monitors.

Added Component Cooling Water Monitor description to Section 10.2, Liquid Process Radiation Monitors.

Added dual reference to applicable Technical Requirements Manual and Administrative Technical Requirements Table.

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

Byron Station Chapter 11 Change Summary ODCM Revision 1.6, October 1998 Page Change Description 11-i Updated revision number.

11-2 thru Miscellaneous format changes incorporated to maintain consistency throughout 11-8 the Chapter.

11-7 Removed dairy sample site BY-27 from REMP Sampling Program. The dairy is no longer active, and no samples can be obtained.

11-13 Deleted sample site BY-27 from Figure 11-4, "Ingestion and Waterborne Exposure Pathway Sample Locations."

g:IODCM_Rao\\NRC Rep(>rt 99\\Change Summaries.doc

DRESDEN STATION

. g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

Dresden Station Chapter 11 Change Summary ODCM Revision 1.4, May 1998 Page 11-i 11-2 11-9 Change Description Updated revision number, date and file designator.

Added air sample site D-53 and a notation that sample site D-6 will be deleted once sample site D-53 operational status is established.

Added sample site D-53 to Figure 11-1 and moved number designator for sample site D-7. Actual sample location for sample site D-7 did not change.

g:IODCM_Reo\\NRC Report 99\\Chenge Summeriea.doc

Dresden Station

  • Chapter 12 Change Summary ODCM Revision 1.7, April 1998 Page Change Description 12-i Updated revision number in header and file designator.

12-ii Updated revision number.

'12.,39 Added "M" to the column for Minimum Analysis Frequency for tritium samples.

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

Dresden Station Chapter 12 Change Summary ODCM Revision 1.8, July 1998 Page Change Description All Changed header revision number and date to Revision 1.8, July 1998.

12-2 Inserted the definition of "Public Dose" (i.e., definition 12.1.13 ).

12-63 New wording was added to section, in 12.6.3.2.(2), to reflect the new requirement for Independent Technical Review and PORC.

12-64 12.6.4.1 was modified to change "On-Site Review and Investigative Function" to "Independent Technical Review."

12-64 12.6.4.L(7) was modified to change "On-Site Review and Investigative Function" to "Independent Technical Review."

12-64 12.6.4.2 was modified to change "On-Site Review and Investigative Function" to "IQ.dependent Technical Review."

g:\\ODCM_Rao\\NRC Report 99\\Change Summaries.doc

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LASALLE STATION g:IOOCM_Rao\\NRC Report 99\\Change Summaries.doc

LaSalle Station Chapter 10 Change Summary ODCM Revision 1.9, April 1998 Page 10-i 10-ii

. 10-iii 10-iv 10-v 10-1 10-4 10-7 10-10 10-15 Change Description Updated revision number. Added file designator identification to bottom of page.

Updated page numbers.

Corrected title for Section 10.2.5 in Table of Contents to match that on page 10-12 and updated page numbers.

Updated page number for Table 10-1.

Updated page numbers for Figures 10-1 through 10-4.

  • Changed date for start of oil. burning to Fall of 1998.
  • Revised the wording for Section 10.1.3.1.2 to reflect the method for establishing setpoints for the condenser air ejector monitors.

Corrected typographical error of monitor equipment piece number (EPN).

Revised the wording for Section 10.2.4 to clarify the allocation of liquid releases from the Station.

Revised Figure* 10-3 to indicate a generic symbol for the flow element* and

  • deleted obsolete EPN.

g:IODCM_RiiolNRC Report 99\\Change Summaries.doc

LaSalle Station Chapter 11 Change Summary ODCM Revision 2, April 1998 Page 11-i 11-2 11-6 ll-7.

Change Description Updated revision number and file designator.

Corrected sampling locations for sample sites L-01 and L-03.

Corrected typographical error describing the distance for the drinking water sampling location.

Added clarifying statement to the sampling requirement for food products.

g:IOOCM_Rao\\NRC Report 99\\Change Summaries.doc

LaSalle Station Chapter 12 Change Summary ODCM Revision 1.9, April 1998 (Page 1 of2)

Page 12-i 12-ii 12-iii 12-iv 12-8 12-9 12-10 12-15 12-25 12-27 12-34 12-37 12-38 Change Description Added file designator identification to bottom of page.

Updated revision number.

Updated page numbers.

Updated page numbers.

Added clarifier to Applicability statement to define that the requirement is applicable only when there js flow in the system.

Deleted EPNs for the Cooling Pond Blowdown Pipe.

Added clarifying statement to Action 101 de:fining requirements if action exceeds 30 days.

Added note to bottom of table notations explaining actions required if 30 day period is exceeded.

Corrected Table number designator and corrected typographical error.

Corrected typographical error in Operability Requirement section. Amended ACTION defining requirements when the limits are exceeded to reference the appropriate reporting requirement in 1 OCFR50.

Added wording to Bases to allow for system bypass to portable waste treatment

. equipment.

Corrected typographical error.

Amended ACTION defining requirements when the limits are exceeded to reference the appropriate reporting requirements in 1 OCFR50.

Amended ACTION defining requirements when the limits are exceeded to reference the appropriate reporting requirements in 1 OCFR50.

g:iODCM_Rao\\NRC Report 99\\Change Summaries.doc

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LaSalle Station Chapter 12 Change Summary ODCM Revision 1.9, April 1998 (Page 2 of2)

Page 12-47 12-54 12-57 12-59 12-62 Change Description Deleted "... " in front of";::::;" in the equation.

Added qualifying statements to sampling requirements for food products.

Corrected typographical error~

Changed the tritium (i.e., H-3) LLD for water to 2,000 pCi/l to be consistent with the Generic Letter 89-01 requirements for environmental samples.

Added notation (7) defining that an LLD of200 pCi/l for H-3 will still be required for off-site analyses.

Corrected typographical error.

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

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QUAD CITIES STATION g:IOOCM_Rao\\NRC Report ~Change Summaries.doc

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Quad Cities Station

.Chapter U Change Summary ODCM Revision 1.9, December 1998 (Page 1 of2)

Page 11-1 11-1 thru

'11-7 11-2 Change Description Editorial change made to point out.the fact that Uniform Radiological Effluent

  • Monitoring Program (UREMP) will be implemented effective with the first sampling period of 1999.

The distances that are listed in Table 11-1 for the air sampling and TLD locations from the site have been updated based on geographical positioning system (GPS) data obtained by station personnel. Approximately 70% of the distances have been slightly* changed.

The following air sampling sites have been removed from Table 11-1 based on needs for UREMP:

. Q-05; 0.:.06; Q-08; Q-09; Q-10; Q-11; Q-12; Q-14; and Q-15.

Iri addition, air sampling site Q-7 was moved to be designated as the "control."

  • 11-2 New sampling sites Q-37 (i.e., Meredosia Road) and Q-38*(i.e., Fuller Road) were added as "Far Field" ~r sampling sites.

11-3 The following Inner ring TLD locations have been deleted due to the. fact that they are not in the desired locations/sectors per the GPS data:

Q-102-2; Q-106-1; Q-107-3; and Q-116-2.

g:\\ODCM_Rao\\NRC Report 99\\Change Summaries.doc r;.

Quad Cities Station Chapter 11 Change Summary ODCM Revision 1.9, December 1998 (Page 2 of2)

. Page Change Description The following TLD locations are new and they will replace the above-mentioned deleted locations. These are placed in the desired sectors:

Q-102-3; Q-106-3; Q-107-3; and Q-116-3.

11-6 Sample site Q-18 (i.e., milk) has been removed from Table 11-1. The site is out of business.

11-6 Sample site Q-27 (i.e., bottom sediment) has been removed from Table 11-1.

(No longer required.)

11-5 Sampling sites Q-21 and Q-22 (i.e., cooling water) have been removed from Table 11-1. (No longer required.)

11-5

  • Sample sites Q-19 and Q-20 (i.e., public water) have been removed from Table 11-1. (Not required since farther than 6.2 miles from station.)

11-5, Sample sites Q-33 and Q-34 (i.e., surface water) have been added to Table 11-1.

11-6 11-5 Sample sites Q-35 and Q-36 (i.e., well water) have been added to Table 11-1.

11-9 thru Figures 11-1, 11-2 and 11-Jwere recreated to update information and to 11-11

. improve readability.

Tables 11-2 and 11-3 have been deleted. This information is available in Chapter 12, Revision 1.9.

g:\\ODCM_Rao\\NRC Report 99\\Change Summariel.doc

Quad Cities Station Chapter 12 Change Summary ODCM Revision 1.9, December 1998 Page 12-15 12-39 Change Description The functional test for the Main Chimney Flow Rate Monitor was N/A'd in Table 12.2-4 since this monitor does not have any alarms or trips to functionally test.

The number of sampling locations and the distances were updated to reflect UREMP.

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doe

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ZION STATION g:IODCM_Rao\\NRC Report 99\\Change Summliries.doc

Zion Station Chapter 10 Change Summary ODCM Revision 2, March 1998 Page 10-i 10-ii, 10-1, 10-2 10-13 10-13, 10-15 Change Description Updated revision number and file designator.

Changed "Vent" to "Ventilation" to avoid confusion with the Containment Vent.

Deleted ORT-PR14 from Figure 10-1. This instrument has been abandoned.

Deleted "A" from EPNs for lRE-0015 and 2RE-0015.

Enlarged figures for better legibility g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

Zion Station Chapter 12 Change Summary ODCM Revision 2, March 1998 Page 12-ii 12-1 12-7 12-13, 12-23, 12-26, 12-27, 12-28, 12-32, 12-34, 12-35, 12-46 12-27, 12-35 12-12, 12-17, 12-29 12-29 12-30 Change Description Updated revision number and file designator.

Added definition for CONTINUOUS SAMPLING FREQUENCY to identify allowances for sampling interruptions of short duration. Corrected capitalization.

Corrected section reference for independent sampling requirement. Corrected punctuation.

Corrected punctuation and capitalization errors.

Changed wording to be consistent with that in NUREG-1301, "Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors."

Changed "Vent" to "Ventilation" to avoid confusion with the Containment Vent.

Added footnote notation to Continuous Sampling Frequency for Continuous Releases, Ventilation Stack.

Added footnote (h) clarifying CONTINUOUS SAMPLING FREQUENCY exceptions.

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

Zion Station Chapter 12 Change Summary ODCM Revision 3, July 1998 (Page 1 of2)

Page 12-i 12-7 12-10 li-11 12-11 Change Description Updated revision number, revision date, and electronic file designator. This information is for administrative tracking.

Changed ACTION 2 to require grab samples to be obtained once per day rather.

than once per shift. The change in frequency is intended to adjust compensatory actions commensurate with the risk of Zion Station's defueled operational status and activities. In the permanently defueled condition of Zion Station, there is no chance for a tube rupture/significant primary-to-secondary leak. The monitor is available to detect any minor leaching of contamination from the low source term present in the secondary system from past in-leakage.

There is no reduction in safety in ~hanging from a shiftly sample to daily sample.

Deleted, from Table 12.2-3, all of the information pertaining to the radiation monitors which detect radioactive noble gases and iodine during Containment Venting and ~urging operations (1(2)RT-PR09A, 1(2) RTPR09B, 1(2)RIA-PR40E (Channel 5), and 1(2) RIA-PR40C (Channel 3)). All nuclear fuel has been permanently removed from both Zion Station Containment Buildings.

The possibility of releasing nuclear-fuel-related radioactive noble gases or iodine during Containment Venting or Purging operations has been significantly reduced. As determined by Zion Station Calculation number 22S-0-11 OX-0057 (3/24/98), there are no radioactive iodine isotopes remaining in the spent nuclear fuel.

Changed the compensatory action statement for ORE-0014 in Table 12.2-3 from Action 6 to Action 13. The proposed change to the surveillance actions for inoperable ORE-0014 is intended to set consistent compensatory actions for ORE-0014 and 1(2)RIA-PR49E (Channel 5) because these radiation detectors perform similar functions. They monitor Fuel Handling Building and Auxiliary Building ventilation for radioactive noble gases.

Deleted from Table 12.2-3 all of the information pertaining to l(i)RT-PR25.

Radiation monitors 1(2)RT-PR25 detect radioactive noble gases in Fuel Handling Building and Auxiliary Building ventilation and perform actions which are redundant to other radiation monitors (ORE-0014 and l(2)RIA-PR49E (Channel 5)).

g:IODCM_Rao\\NRC Report 99\\Change Summaries.doc

Zion Station Chapter 12 Change Summary ODCM Revision 3, July 1998 (Page2 of2)

Page Change Description 12-13 Changed ACTION 6 to require grab samples to be obtained once per day rather than once per shift. The change in frequency is intended to adjust compensatory actions commensurate with the risk of Zion Station's defueled operational status and activities. Currently, the compensatory action requires samples to be obtained once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and ANALYZED within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

That analysis requirement could be implemented such that every other sample is analyzed within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, which would effectively make analysis data available once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The proposed change requires a sample to be obtained and analyzed once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The ability to trend data is not significantly reduced by decreasing the sampling frequency from once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> to once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

12-13 Changed ACTION 13 to require grab samples to be obtained once per day rather than once per shift. The change in frequency is intended to adjust

  • ~

compensatory actions commensurate with the risk of Zion Station's defueled:

operational status and activities. Currently, the compensatory actions for ORE-0014 and 1(2)RIA-PR49E (Channel 5) require samples to be obtained once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and ANALYZED within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. That analysis requirement could be implemented such that every other sample is analyzed within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, which would effectively make analysis data available once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The proposed change requires a sample to be obtained and analyzed once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The ability to trend data is not significantly reduced by decreasing the sampling frequency from once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> to once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

g:\\OOCM_Rao\\NRC Report 99\\Change Summaries.doc

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