ML20246H416

Forwards Rev 1 to ODCM, Making Editorial Corrections & Changing ODCM Requirements & Calculational Methodologies Considered Technical in Nature

ML20246H416
Person / Time
Site:	Comanche Peak
Issue date:	08/25/1989
From:	William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20246H423	List: ML20246H416 ML20246H428
References
TXX-89595, NUDOCS 8909010253
Download: ML20246H416 (17)

Text

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• -- Log # TXX-89595 r, L- 2 File # 10010 E 3 L

Ref # 10CFR20.106 n! ELECTRIC August 25, 1989-U..S. Nuclear. Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 TRANSMITTAL OF 0FFSITE DOSE CALCULATION-MANUAL (ODCM). REV. 1 REF:- (1) TU Electric letter (TXX-89118) to NRC dated Maren 2, 1989 (2) TU Elect'ric letter (TXX-89226) to NRC dated April 28, 1989 Gentlemen:

Enclosed is Revision 1 of the CPSES Offsite Dose Calculation Manual (ODCM).

Revision 0 of the ODCM was submitted to the NRC for review in March, 1989 (reference 1). Revision 1 ir.corporates editorial corrections as well as changes to ODCM requirements and calculational methodologies that are

. considered technical in nature.

i In Revisior. 1, those technical' changes-and editorial changes that could potentially be considered substantive are identified by.a Revision.bar in the margin next to the change. Pages with. Revision bars and certain pages of the

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Table.of. Contents are identified with.a "Rev. 1, 8/89" notation at the bottom.

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Otherwise, the Rev. O, 3/89 notation is. maintained. In order to assure that the enclosed copy of the 0DCM is complete, a list of effective pages is attached. This listing identifies each effective page and indicates whether it is a Rev. O page 11.e., an original page) or if it has been changed in Revision 1 of the document. This list should be inserted in the ODCM binder.

A description of the technical changes and the editorial changes that could l potentially be considered substantive. together with their justification and an indication of SER/SSER' impact, is included as an attachment in this transmittal' package. Also included with each description and justification is L the Group' identifier, as discussed in reference 2.

1 Although the final CPSES Te:hnical Specifications have not been issued, the requirements of draft Technical Specification. Administrative Control 6.14, regarding enanges to the ODCM, were followed for this revision. Additionally, it is to be noted that these changes have been discussed with Wayne Meinke of the NRC staff.

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'PD8 400 N. Olive Dallas. Texas 75201 b

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TXX-89595 August 25, 1989 Page 2 of 2 i

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TV Electric requests that the NRC perform an expedited review of this material i and inform us as to its acceptability. If you have any questions, please  !

contact either Doug Kay or Ray Ashley of the TU Electric staff.

l Sincerely, j l

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l William J. Cahill, Jr.  ?

RLA/smp Enclosures {

Attachments c - Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) l 1

f* 'Att'achment L, .

" TXX-89595- CPSES ODCM REVIS20N 1 H**4 .

DETAILED DESCRIPTION Page=1 v; . 3

)0DCM.Page.

fas amended) Grcup Description'

'- xiii 3 JAdds a statement' referring to a new Appendix 6 containing addttional' guidance regarding the implementation of certain ODCM requirements.

Correction:

This change adds information to aid in implementation of the requirements being addressed.

SER/SSER Impact: No

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I 3/4-8, 22 4 See Page No(s):II 1-16 and II 2-14 Substitutes " Radiological Effluent Control" or. i

" Control" for " Specification" or " Technical Specification".

Clarification:

This' change is made to complete the transfer of the Radiological Effluent Technical Specifications to the ODCM.

SER/SSER Impact: No I 3/4-24 4 Adds a footnote to Table 4.11-2 to explain the analysis frequency of the Plant Vent noble gas monitor.

Clarification:

This change reflects ine fact that the noble gas concentration in the Plant Vent is analyzed.

' continuously by a radiation monitor.

Related SER'Section: 11.2.2 SER/SSER Impact: No I 2/4-36 3 Changes an entry in the column " Type and Frequency of Analysis" in the Radiological Environmental Monitoring

, Program, relating to the type of sample to be used for analyzing drinking water in the waterborne pathway.

Correction:

This change to a composite sample is made to achieve consistency with the required sampling type for this source.

SER/SSER Impact: No I 3/4-37 3 Modifies the requirement for the sampling of broad leaf vegetation grown nearest each of the two different offsite locations of highest predicted ground level D/0 under certain conditions.

Revision:

These changes (i.e., from three different kinds of broad ieaf vegetation to a single sample, and from

" monthly" to " monthly, when available") are made since only limited types of broad leaf vegetation are found in the CPSES environs during the spring and early

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" ttachmnt CPSES ODCM REVISION ^1 '

l 'TXXe89595 . DETAILED DESCRIPTION' Pag 2.2' l 1

ODCM'Page-(as amended) Group Description summer months.

'SER/SSER Impact: No l

I 3/4-37 3 Adds a footnote for the Food Product Pathway. sampling program. j Revision: .

This change-is made to compensate'for the reduction in 3" the sampling requirements for broad leaf vegetation as specified in the Standard Radiological Effluent-Controls. (This revision to the program will mair,tain  ;

the overall effectiveness of the Radiological Environmental Monitoring Program.) .

SER/SSER Impact: No I 3/4-38 4 Deletes the parenthetical portion of the text in Note (2) for Table 3.12-1. j Editarial: )

This change is made because the deleted inaterial pdded confusion: furthermore, this material was provided as guidance in the Standard Radiological Effluent Controls and was, in fact, considered in the development of this ODCH.  ! q l- SER/SSER Impact: No a I 3/4-44 3 Adds missing text to Action Stateme9t 'b', for Control 1 3/4.12.2, " Land Use Census'",

Correction:

This text is added since it was inadysrtently omitted during the preparation of the Rev. O document. (The wording is taken from the Standard Radiological Effluent Controls.) ,

SER/3SER Impact: No a

I 6-3 3 ' Modifies the approval requirements for changes to the ODCM.

Revision:

This change is made to be consistent with the Administrative Control Requirements of Technical 4 Specification 6.14 (Rev. F). )

Related SER Section: 13.1.1.2 '

SER/SSER Impact: No i

I 6-3 3 Substitutes " Technical Specification" for " Control" in <

Section 6.9.1.4.

Correction:

This change is made to note that the action statenents .,

for liquid holdup tanks and gas storage tanks are in {

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~Attachm:nt 'CPSES ODCM REVISION'l-l- .TXX.-89595 DETAILED DESCRIPTION. Page 3

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1 00CM Page c 1 1133-amended) Sr_9#R Description the Technical Specificatiert.

} SER/SSER Impact: No I.B 3/'-6 3 Replaces the last sentence in the text describing the bases for Control 3/4.11.2.2, " Dose - Noble Gases".

Addition:

This change, concerning the proportioning of releases-among units sharing radwaste treatment systems, is made to be consistent with the bases for Controls 3/4.12.2.2 and'3/4.12.2.4. (The revised wording is consistent with the Standard Radiological Effluent Controls.)

SER/3SER Impact: No

!)'1 2 Changes the list of system pumps that are available'to discharge liquids to the circulating water discharge fahal.

Correction:

These changes are wade to be consistent with the as--

hu; ?t Liquid Matts Management Lyttera pumps available for liqu'd 6f4cnarge.

Related SER Section: 11.2.1

~SER/SSER Impact: Wo II 1-3, 4 3 Revises Sections 1.1.2 and 1.1.4, which describe tee ,

effluent flow rate used in the calculat$on of the ~

dilution facter fcr.all liquid radwaste system b:tch discharges.

Revision:

This change is made to reflect the modification'of radiation monitor XRE-5253 (to off-line vs. in line services which elitninated a built-in safety factor in the calculational methodology. ,(As compensation, a safety factor of 2 hat been apelied in the methodo?ogy for ca'culating the required dilution factors in Section 1.1.5 of Part II; see page II 1-4a.)

SER/SSER Impact: No II 1-4 3 Adds information to Sections 1.1.3 and 1.1.4 which describes corrections that can be made to the dilution j flow in order to allow for simultaneous releases.

Addition:

This change is made to the calculational methodology to provide an additional consideration that can be utilized in the determination of liquid effluent concentrations and alarm setpoints. (The revised methodology corrects the available dilution flow for a release by subtracting the required dilution flow for l any other concurrent release. This method will l l

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Attach:;nt CPSES ODCM REVISION 1-l 9:  ?

• TXX.-89595' DETAILED DESCRIPTION- 'Paga 4 l

10DCN Page

, lag _apg_nded) Group DescrintJAn I . i

' continue to assure compliance with 10 CFR 20.)

Related SER Section: 11.2.1 SER/SSER Impact: No L II 1-4. 4a 3 Modifies the methodology for calculating the Required l- Dilution Factor by applying a. safety factor of 2.

Correction:

This change is made to ccupensate for the loss of the safety factor which resulted from relocation of detecter X2E-5253 to off-liue service.(see Detailed Description for.0DCM Page 11 1-3 and -4).

SER/SSER Impact: No II 1-17  !? Adds 6 footnote referring to Supplemental Guidance Statement #3 which states thet discharge to the Low Level Retention pond may continue if tritium is' d.eter.ted and the cource of the tritium can bc traced to '

t5e TG Primery Water Cooling System (TGPWCS). 4

. Add-1ti on :

This change is &&de tu incorporate the guidance provided by Supplemental Guidance Statenent #3.

SER/SSER Impact: Ph) 11 2-16 3 Adds the Dose Factors for Kr-83m to Table 2.1.

Corruction:

This change is made because this isotope was . .

inadvertently omitted during preparation of the Rev. O document. (The specific dose factor valuet were obtained from Table B-1 Of Reg. Guide 1.109. Rev. 1.)

SER/SSER-Impact: No j II 2-50. 55 3 fiodifies the definition of tne f.er' ins "D sub o" and "1500".

Correction: )

These changus make the definitions consistent with what is used in other parts of the ODCM.

SER/SSER ImpPct: No II 2-55 3 Modifies the definition of the term "3000". ,

Correction:

This change is made to being the definition into con-formance with Radiological Effluent Control 3.11.2.1 which limits the dose rate due to noble gases to 500 mrem /yr whole body and 3000 mrem /yr to the skin. I SER/SSER Impact: No

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Attach:2nt

,. TXF-89595 CPSES ODCM-REVISION 1 DETAILED DESCRIPTION Page 5 00CM Page

~(as amended) Group Description II-C 4 Adds information to the definition of the term a describing.the~ ground plane dose conversion factor.

Clarification:

This change is made to clarify that the doses associated with the ground plane exposure pathway ar'e applicable to all organs even though only total body and skin dose conversion factors are provided.- (The added wording is taken from Reg. Guide 1.109. Rev. 1.)-

SER/SSER Impact::No II G-1 5 Supplemental Guidance Statement #1 provides guidance pertaining to acceptable means for complying with the LLD for the grab. samples required by Action Statements 31 and 32 of Radiological Effluent Control 3/4.3.3.4.

Addition:

This guidance clarifies the methodology for achieving compliance by specifying the cpplicable LLD values to be used in analysis of the required grab samples.

SER/SSER Impact: No 11 G-2 2 Supplemental Guidance Statement #2 provides information regarding application of the required LLD to be used in implementing the analysis of the monthly Batch Waste Release Tank sample as required by Tab 1'e 4.11-1.

Addition:

This guidance statement indicctes that this LLD value applies to the noble gas isotopes listed in Notation 2 of Table 4.11-2.

SER/SSER Impact: No II G-3, 4 & 5 3 Supplemental Guidance Statement #3 indicates that when tritium is detected in the Turbine Building (TB) sumps and it is known that this tritium is due to leakage from the TG Primary Water Cooling System (TGPWCS),

discharge to the Low Level Retention Pond may continue.

Addition:

This guidance statement recognizes that the TB sump sampling requirements, in accordance with Table 4.11-1, are based on primary to secondary leakage whereas the tritium in the TGPWCS is a known, fixed quantity. (In support of this. supplemental guidance, an accompanying analysis is provided which demonstrates that release of the er. tire tritium content from the TGPWCS would result only in a negligibly small dose.)

SER/SSEE tmpact: No II G-6 3 Supplemental Guidance Statement #4 adds an alternate means far implementing the CCW Drain Tank sampling and L ____ _

Attach :nt CPSES ODCM REVISION 1

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• TXL-89595- DETAILED DESCRIPTION Page 6.

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rODCM Page (as amended) lAtn a- Descriot' ion analysis requirement of Table 4.11-1.

Addition:

This guidance statement recognizes that the discharge of liquid from the CCW Drain Tank can be accomplished by routing it to the Waste Mater Holdup Tank and per-forming the required batch sampling prior to discharge of that tank. (This is required because'all inputs to the CCW Drain Tank cannot be isolated for batch dis-charges.)

SER/SSER' Impact: No i

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COMANCHE PEAK STEAM ELECTRIC STATION OFFSITE DOSE CALCULATION MANUAL List of Effective Pages l

EPL-i August, 1989 1

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I l CPSES - ODCM List of Effective Pages Preface The Effective Page Listing (EPL) provides a tabulation of the effective pages in the CPSES ODCM.

Each page in the CPSES ODCM is identified with a page number, including pages that contain tables or figures.

A revision number and date are included on each page. If the page is revised but the revision is not considered substantive (i.e., it is an editorial correctior.), the revisfon number will not be changed. The revision number and date are changed when the change represents a substantive revision to the information that is provided on the page. If a page, or portion thereof, is reprinted without any change, neither the new revision number nor the new revision date will be added to that page; rather, the existing amendment number and date will be maintained.

Since the EPL is not updated with each revision, an Instruction Sheet (s) will be provided for subsequent revisions of the CPSES ODCM; it should be retained immediately in front of the EPL. To identify the effective revision level of a page in the CPSES ODCM, check these Instruction Sheets first and, if not found, the EPL second.

If any effective page cannot be found, notify TU Electric Nuclear Licensing and the required effective pages will be provided. Contact may be made by phone (214/812-4358) or by mail. A marked up copy of pages from the Instruction Sheets or the EPL is a convenient way to identify the required pages.

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CPSES ODCM Effective Page 1.isting PART I

./aae No. Revision Not i 1 11 1 iii 0 iv 1 v 1 vi 0 vii 0 viii 0 1x 0 x 0 xi 1 xii 0 xiii 1 1 1-0 0 1 1-1 0 1 1-2 0 1 1-3 0 1 1-4 0 1 1-5 0 1 1-6 0 1 2-0 1 1 3/4-0 0 I 3/4-1 0 1 3/4-2 0 1 3/4-3 0 ,

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I 3/4-36-(rev. bar was inadvertently omitted) 1 I 3/4-37 (rev. bar was inadvertently omitted) 1 I 3/4-38 (rev..bar was inadvertently omitted) 1 l I 3/4-39 0 l I 3/4-40 0 I 3/4-41 0 l I 3/4-42 (rev. bar should be deleted) 0 1 1 3/4-43 0 l I.3/4-44 1 1 3/4-45 0 i

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CPSES ODCH Effective Page Listing PART I Pace No. Revision No.

I B 3/4-0 1 I B 3/4-1 0 I B 3/4-2 0 I B 3/4-3 0 I B 3/4-4 0 I B 3/4-5 0 I B 3/4-6 1 I B 3/4-7 0 I B 3/4-8 0 I B 3/4-9 0 I B 3/4-10 0 I B 3/4-11 0 1 5-0 (no revision no. & no date)

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CPSES ODCM Effective Page Listing PART II Pace No. Revisfon_Mo.1 II 1-1 0 11 1-2 1 II 1-3 1 II 1-4 1 II 1-4a 1 II 1-5 0 II 1-6 0 II 1-7 0 II 1-8 0 II 1-9 0 11 1-10 0 II 1-11 0 II 1-12 0 11-1-13 0 II 1-14 0 11 1-15 0 II 1-16 1 II 1-17 1 II 1-18 0 II 1-19 0 II 1-20 0 II 1-21 0 II 1-22 0 II 1-23 0 II 1-24 0 I'i 1-25 0 1J 2-1 0 II 2-2 0 II 2-3 0 II 2-4 0 11 2-5 0 II 2-6 0 II 2-7 0 II 2-8 0 II 2-9 0 EPL 11-1 August, 1989

CPSES ODCM Effective Page Listing PART II Pace No. Revision No.

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