ML20202J282

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Rev 1 to DAP-13, Preparations of Calculations
ML20202J282
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 05/28/1986
From: Snyder T
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20202J051 List: ... further results
References
DAP-13, NUDOCS 8607170051
Download: ML20202J282 (20)
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TITLE PREPARATION OF CALCULATIONS NUMBER DAP-13 Revision Prepared Date Reviewed Date 4) proved Date O Sn

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TABLE OF CONTENTS Section Pooe Cove r S hee t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I Tab le of Con t en t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.0 P URP O S E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I 2.0 SCOPE..................................................... I 3.0 DEFINITIONS AND RESPONSIBILITIES . . . . . . . . . . . . . . . . . . . . . . . . . I 4.0 I NS TR UCT I ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5.0 DO CU ME NT ATI ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 ATTACHMENTS A CALCULATION SHEET ..................................... A-1 B CONTR OL STA MP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-l C CALCUL ATION COVER SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-l D DISCIPLitE/ SUBJECT CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1 E CALCUL ATI ON LO G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-l 4

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TN-854262/13 li i

COMANCHE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: I 1.0 PURPOSE This procedure establishes the requirements for the preparation and control of calculations that are developed as part of the Design Adequocy Program (DAP).

2.0 SCOPE This procedure is applicable to oil calculations that are prepared under the DAP.

3.0 DEFINITIONS AND RESPONSIBILITIES -

3.1 Definitions 3.1.1 Calculations Calculations are a rneans of documenting specific quantitative information that is developed and/or used in the process of DAP review activities. Calculations typically involve the execution of mathematical formulas to produce specific quantitative data. Within the DAP, calculations are generally used to establish or verify specific design criteria, input parameters, design results and code compliance. Calculations may be used as supporting documentation for specific review activities and engineering evaluations. Calculations performed by the DAP are not part of th design basis of the plant. Calculations prepared by the l DAP are classified as either alternate calculations or supporting calculations.

l Where the term " calculation" is used in this procedure without modifiers, the reference shall be applicable to both types of calculations.

l TN-85-6262/13 PageI ofIl i

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COMANCHE PEAK RESPONSE TEAM - DESIGN ADEOUACY PROCEDURE Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: I C

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3.1.2 Alternate Calculation An alternate calculation is a calculation performed by the DAP under this procedure for the purpose of verifying a design using the " alternate calculation" method of N45.2.ll. Alternate calculations require independent checking.

3.1.3 Supporting Calculation A supporting calculation is on mathematical operation other than simple b

operations (e.g., oddition, subtraction, etc.) that is used to document portions of the DAP review of a design. A supporting calculation may not be used as the sole or primary means of verifying a design. Supporting calculations are incorporated into other documents (e.g., checklists, engineering evaluations) and are opproved as o package. Simple checks for mothematical occuracy of a project (Gibbs & Hill, Tif, SWEC, etc.) calculation may be described in checklists or engineering evaluations without formally repeating the calculation.

J 3.1.4 Certified Computer Program A computer program is considered certified if the following conditions are met:

o The version used has been verified for use in nuclear safety-relcted applications by the organization that

" owns" (or is licensed to use) the software involved. This verification shall have been done under o QA program I

appropriate for this purpose.

l o The hardware and operating system on which the program is to be run is the some as that used to certify the program. Alternatively, the user may demonstrate equi-volence by running benchmark programs.

o The user has received training to use the program os required by the certifier.

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TN-85-6262/13 Poge 2 of II

COMANCHE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: I

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3.2 Responsibilities '

3.2.1 Reviewers Third party design odequocy personnel shall prepare and check alternate calcula-tions. Preparation and checking shall be performed by different individuals.

Reviewers may perform supporting calculations as required and shall ensure that such calculations are incorporated into appropriate DAP documentation (e.g.,

checklists, engineering evaluations). ~

d 3.2.2 Discipline Coordinators Discipline Coordinators have the following responsibilities:

o Establish the scope of alternate calculations to be per-t 3 formed within their respective disciplines. lA lC

) o Assign qualified reviewers to prepare and check alternate I l calculations.

o Approve alternate calculations prepared within their dis-l cipline. Except for calculations associated with the assessment of safety significance, this responsibility may be delegated to a qualified reviewer who is independent of the preparation and checking of the calculation.

g o Assign control identificotton number to each completed rnate calculation and maintain the master calculation g

The Discipline Coordinator may originate or check calculations while retaining the opproval authority. He may not both originate and check the same calculation.

b TN-85-6262/13 Page 3 of 11

COMANCHE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE

. Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: I b

d -

4.0 INSTRUCTIONS 4.1 Preparation 4.1.1 Performance and Documentation Eoch calculation shall be prepared using accepted engineering practice and shall include problem statement and input requirements such as assumptions, basic criteria, methodology, data referenced to the source, and applicable codes and -

standards. The source of major equations and the source or derivation of any uncommon equations introduced in the calculation shall be stated. Where supporting calculations are performed to verify a specific aspect of a CPSES evaluation, the methodology used and references to the corresponding CPES calculation may be stated in lieu of the above.

Calculations shall be complete and orderly and shall include sufficient sketches, notes and explanatory information to allow any person not familiar with the work, but technically qualified, to understand it without extensive odditional inquiry and research.

4.1.2 References Calculations shall include references to sources of Information or data used in l the calculation. References shall be listed and identified sufficiently to allow easy recovery. Title, revision number or date, author, copyright date, edition, etc., shall be included as appropriate.

4.1.3 Page Identification and Cover Sheet (Alternate Calculations)

All final alternate calculations shall be made on standard Control Sheets (Attachment A) or on sheets stamped with the Control Stamp (Attochment B)

TN-85-6262/13 Page 4 of II

COMANCHE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE

, Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: 1 O

v

  • with all required information completed by the originator. Alternate forms may be used provided that all essential information called for on the Control Sheet is included on the alternate form. A Cover Sheet (Attochment C) shall also be prepared and ottoched to each finished alternate calculation prior to checking and approval. The originator shall sign and date the Cover Sheet. Other required information d.all be completed, including the number of sheets of the ottoched calculation and its revision number.

4.l.4 Computer Calculation Documentation Computer calculations (not incorporated into another calculation) shall be identified by a Cover Sheet with ottochments as necessary to define the calculation being performed, the assumptions and input data used, basic mathe-matical models applied and references as appropriate. The computer calculation pockage shall include input and output listings which are identified by the some p Calculation ID Number as the Cover Sheet. Note: all computer calculations shall C be considered alternate calculations.

Checkine and Approval of Alternate Calculations 4.2 lg 4.2.1 Status Alternate calculations are preliminary until checked and subsequently opproved by the Discipline Coordinator or his designated representative. A supporting calculation shall become final with the completion of checking and opproval of the relevant documentatiori into which it is incorporated. Preli_minary calcula-d tions not upgroded to final calculation status shall be maintained separately.

TN-85-6262/13 Page 5 of II

9 PROCEDURE CHE PEAK RESPONSE TEAM DESIGN Revision: 1 ADEQUACY

Title:

PREPARATION OF CALCULATIONS Number: DAP-13 .

4,2.2 Checking The Checker 4.2.2.1 individual who has ld Each finished alternate calculation shall be checked by onl ulation. Th qualifications at least sufficient to perform the ca ci d a singular analytical not be the originator and shall not have specif e .

for that aspect being checked.

Extent of Checking 4.2.2.2 t ce of the The extent of checking requiredl is a function of the impor anity, de

(

calculation, its importonce to safety, its comp exthese consid and relation to the state-of-the-art.l Based lculationon to o limited checking con range from o detailed tcheck of the who e car simpilfied calc check of the calculation opproach with on otterna e o technique.

IA 4.2.2.3 Check of Alternate Calculations d to the extent Checking shall consist of the following, os applicable, an l

appropriate:

o Review calculation's inputs for conformance i to design requirements (e.g., applicobility to the bases sumption),

o Check relevant parameters ogainst source or reference documents (e.g.,) foods, and other dota , and ensure that dato isforces, odequately flows, material pr referenced.

Page 6 of II TN-85 4262/13

Number: DAP-13 RESPONSE TEAM - DESIGN AD Titlan PREPARATION IONS OF CALC

. Revision: I o

Assure given, that the methodology and .

o assumptions are clearly o

quired occurocy cal .

of method the calculationCh and the re-o Check results at oppropriate steps o

Compare results with other s.

source o

by-step or only at ,

critical pointsPerform a c ecks of results step-o Perform alternate or simplified c l

' a culations.

o prepared and documented erwise s procedure. atisfactorily per thisEns Ensure mentation that referenced supportin opprcued. , calculations, and engineering are evolu 4.2.2.4 Check of Computer Calculaticns d

in addition to the opplicable ste 1

analysis shall determine whether thps performed above, those program copobilities are opplicabl e program is certified, a pockage shall contain or referenc e to the problemcertified statement.

shall also be verified problem. e as the eprogrom's certification The calculation ld occurate . The input model and appropriate representation e of In the case of non-certitied prog checked in the some manner os a hrams, on Individual compu Icol checks of results, alternot checker shall ossureethat hand calculations, the comp t ,

o emot. etc.)and ca ly identified input and ngs.output listi u er calculation pockage i appropriate-TN-85-6262/13 Page 7 of II

l COMANCHE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE -

, Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: I 4.2.3 1

Documentation of Check (Alternate Calculation) ld i 4.2.3.1 General To provide a basis for Discipline Coordinator approval and future traceability, the extent and method of checking shall be clearly indicated by such methods as i

check marks on the original calculation and a description of the check scope on

. the Cover Sheet. The checker shall flag all errors. However, only the originator may alter the original calculation. Where alternate analyses ~or calculations are -

used during the checking process, the purpose and nature of the analysis shall be

! stated along with a clear comparison between the results of the rr.stn and l alternate analyses, i

in all cases when the propagation of the error is not corrected in the calculation 4

or later in the design review process, the originator shall clearly discuss its significance either on the cover sheet or on the original calculation.

k 4.2.3.2 Limited Checks in cases where only certain aspects of a calculation were checked either due ta

} the perceived need or any limitations in the qualifications of the checker, such

! limitations shall be stated explicitly on the Calculation Cover Sheet or attoch-ments as necessary.

d i

4.2.3.3 Checker Signof f i After checking, the checker shall sign and date the Calculation Cover Sheet and each calculation sheet indicating his concurrence with the completeness and j

correctness of the calculation. When more than one person contributes to f checking a calculation (for example when one checks the methodology and the i

i other checks the math) only one of them should take responsibility for the full I

j TN-85-6262/13 Page 8 of 11 I

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COMANCHE PEAK RESPONSE TEAM - DESIGN ADEQUACY PROCEDURE Number: DAP-13

Title:

PREPARATION OF CALCULATIONS Revision: I

\

check by signing the Cover Sheet. In order to enhance traceability and accountability in the checking process, the roles of other checkers may be described in the verification space of the Cover Sheet or by their signatures on the pages which they checked. Any comments shall be resolved with the originator prior to signoff.

4.2.4 Approval The calculation shall then be possed to the Discipline Coordinator or his .

designated representative for opproval. The extent and method of checking must be reviewed and determined to be satisfoctory prior to signoff. The Discipline Coordinator or his designated representative will sign only the cover sheet, in the cose of supporting calculations, checking and approval of the primary document (e.g., checklists) shall constitute opproval of associated DAP sup- '

porting calculations.

V 5.0 DOCUMENTATION CONTROL 5.1 Assianment Responsibility for performance of alternate calculations shall be mode by the Discipline Coordinator or his designated representatives. Discipline Coordina-tors shall also assign the qualified reviewers to check the calculations.

d 5.2 Completion I

Upon completion of the alternate calculation, the origina' tor and reviewer shall '

sign off the Calculation Cover Sheet (Attachment C) and submit the calculation for opproval to the Discipline Coordinator.

d

TN-85-6262/13 Page 9 of I l

COMANCHE PEAK RESPONSE TEAM - DESIGN ADEGUACY PROCEDURE Number: DAP-13

Title:

PREPARATION OF CALCl)LATIONS Revision: I t

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Approval shall be documented on the cover sheet.

S.3 Identification After approval has been obtained, the final alternate calculation shall be assigned a control identification number by the Discipline Coordinator or his ld designated representative. This identification number shall be of the following format:

DAP-C-XX-YYY b Sequent 1o1 Number Discipline / Subject Code (see Attachment D)

The Discipline Coordinator shall enter all ossigned calculations on the Calculo-tions Log (Attochment E). This log shall include the Identification number, title and revision level of all calculations. Supporting calculations'shall be identified as appropriate (e.g., referenced as on ottochment to o checklist) but shall not use identification numbers of the format for olternate calculations.

d -

i 5.4 Retention The original copy of all final alternate calculations shall be maintained and filed by the Discipline Coordinator or his designated representative. Supporting d calculations shall be filed with the associated DAP review checklist.

5.S Revisions Revisions to calculations may be required to odd additional information or clarify and correct misinformation (e.g., Inputs).

TN-85-6262/13 Page 10 of 11

. . - __= - .. -________---. _ . - - - - . _ .

Number DAP-13 NSE TEAM - DESIGN PRO b RE ADEGU Titist PREPARATION LATIONS OF CALC Revision: I Revisions shall be prepared ch .

V original calculation.

ecked and approved in the som e manner os the Superseded final calculationssa h ll securely bound with of least the either be Identified as such o shall also note thiscover occurrence page so identified. each page or files for historical reference

. Superseded calculations shall b a ned in the s

TN-85-6262/13

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ATTACHAENT B CONTROL STAMP l

Calculation ID No.

Prepared By/Date Verified By/Date ,

! Page of TN-85-6262/l3 B-l DAP 13, Rev. 0

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CALCULATION NET COVER S_--se

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..DAP Discipline Cliculation ID. No. DAP.C .

Purpose / Description No. of $ hts.

DAP Action Plan Ns 9

Description of Document V erification C

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-)AP-13, Rev. I TN.85 6262/13 C-l t TENERA h CORPORA

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ATTACHMENT D -

COMANOE PEAK DESIGN ADEQUACY PROGRAM DISCIPLIPE/SLEJECT CODES Code Discipline C/S Civil / Structural P Piping and Supports M Mechanical ElC Electrical / instrumentation

. PGl Programmatic / Generic imp!! cations l

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TN-85-6262/13 D-l DAP-13, Rev. 0

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I I A F EENT E DAP 'TfHev.0 COMANGE PEAK tESIGN ADEGUACY PROGRAM CALCUATION LOG REVISION DATE SUPERSEDED CONTROLID.NO. BY TITLE O I 2 3 4 5 6 i

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