ML20081A599

Rev 1 to Procedure ATP-12-Q, Procedure for Performing Calculations & Technical Studies

ML20081A599
Person / Time
Site:	Midland
Issue date:	08/26/1983
From:	MARK TECHNOLOGIES CORP.
To:
Shared Package
ML20081A593	List: ML20081A590 ML20081A599 ML20081A614 ML20081A626
References
ATP-12-Q, NUDOCS 8310260335
Download: ML20081A599 (13)

Text

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i MIDLAND ENERGY CENTER SPATIAL SYSTEMS INTERACTION PROGRAM / SEISMIC CPC0 Document Review / Approval Form Documem.

Title:

PROCEDURF FOR PERFORMING-CALCULATIONS AND TECHNICAL STUDIES Document Number / Revision /Date: ATP-12-Q/01/ August 26, 1983 TABLE OF CPC0 REVIEW / APPROVAL SSIP/S Rev. No.

Date Project Engineer Date MPQAD Date r

0 08/01/83 (Issued for Co ment) 1 08/26/83 'h

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k PROCEDURE FOR PERFOR ING CALCULATIONS AND-TECHNICAL STUDIES ADMINISTRATIVE TASK PROCEDURE NO: ATP-12-Q REVISION NO: 1 DATE: August 26, 1983

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WOMEON OU MARK TECHNOLOGIES CORPORATION 333 Hayes Street San Francisco, California 94102

ATP-12-Q.

Revision 1-Page 2 of 11 TABLE OF REVISIONS Revision 0, Date August 1,_1983 Original Issue'-

Revision 1, Date August 26, 1983 i

l-Revised I, II.A,-B,- D, III.B, IV.0, IV.G.1- & IV.H.

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ATP-12-Q Revision.1

.Page 3 of 11

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Procedurefor Performing Calculations I.__ SCOPE

. This procedure establishes the methods for control, preparation,

- review, and approval. of calculations used in the analysis of quality-related designs.It sets forth the procedural steps to be followed in' identifying the assumptions, references, design

bases, and calculation-methods used, and for maintaining calculation traceability and revision status control.

II.__ RESPONSIBILITIES n

A.-

PROJECT MANAGER f

The Project Manager shall review and -approve calculations.

B. -

SUPERVISING ENGINEER The Supervising Engineers o

Assigns Engineers or qualified personnel to perform calculations.

Designates independent Reviewers to check calculations, o'

resolves comments as necessary.

C.

ENGINEER The Engineer assigned to -perform the calculation is

. responsible for documenting his assumptions, method, design A

input, and references, 'and for resolving any comments made by the-Reviewer.

D.

REVIEWER The designated Reviewer is responsible for reviewing all aspects. of the calculations and for obtaining the originator's agreement -with any checking comments before i

signing off as the Reviewer.

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ATP-12-Q Revision 1

Page 4 of 11 III. DEFINITIONS A.

CALCULATIONS The process 'and documentation of the resoluti.on to a technical problem by analytic and/or computational methods.

B.

. REVIEWER Person responsible for reviewing all aspects of the calculations. The Reviewer'shall not have originated any of l_

the work to be checked.

I

V. PROCEDURE

This procedure applies to work performed as calculations

analyses, and technical studies which involve technical l

computations and analytical steps.

A.

CALCULATION LOG-A calculation index or log shall be maintained as part of the Project File.

The log shall identify the calculations performed for the project by unique number and current revision status. Calculation numbers will be assigned based l

upon the sequence or system of the numbers in the log. The l

log form shall be similar to that shown in Exhibit A.

The log shall be updated whenever a calculation, or revision l.

thereto, is approved.

B.

THE CALCULATION PROCESS l-1.

General t

Calculatiens shall be performed on standard calcu-1ation sheets similar to that shown in Exhibit B unless project requirements dictate a different l

format.

Calculations shall comply with the fol-l lowing documentation criteria:

a.

Every major step of the calculation shall be l-identified.

b.

Formulas and equations used shall be docu-mented; symbols and abbreviations not common-ly used shall be defined.

c.

References and calculation inputs shall be l

identified, and shall be traceable to their source documents to permit subsequent verifi-cation.

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1 ATP-12-Q Revision 1

Page 5 of 11

.d.

'Each calculation sheet shall identify, ' as, a

. mi nimum:

1-1) project name and number 2) originator and reviewer initials i

3) dates of preparation and check e.

-Calculations shall be neat and legible.

f.

Where preliminary data or other data not t

directly traceable to a verified source is

used, the calculation shall identify such data as an assumption or - open item which i

requires future verification.

i 2.

Page Numbering Calculation pages shall t,e numbered such that the completeness of the calculation can be verified.

The recommended method of pagination is to number the calculation cover sheet page'"1 of n,"

where "n"

is the total number.of pages in the calcula-L tion, and: assign each subsequent sheet an appro-l

- priate sequential number. Where this is not prac-tical due to technical or format considerations, a table of content's or' explanation shall be provided L

which clearly indicates the number of pages in i.

each section.

)

3.

Method Statement

. The - Engineer shall describe the methods used in the performance of his calculation.

The method shall ' clearly indicate the sequence of steps such i

that a competent Reviewer can verify the calcula-l tion process without recourse to the originator.

Where a verifiable method is already established (e.g.,

in a technical procedure or manual), 'the Engineer may substitute a reference to the proce-dure.

The reference shall include document num-ber, title, date, revision or edition, and the author and originating organization, if appro-priate.

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ATP-12-Q Revision 1-Page 6'of 11 C..

USE OF COMPUTER PROGRAMS Computer programs may be used-in support of calcula-tions for designs and analyses.

Computer programs shall be identified, verified and controlled in accor-dance with Reference B.

Computer output shall be considered an extension of the base calculation, and.shall comply with the following requirements::

o Computer output for a calculation or analysis shall be identified by a unique identifier or run number placed at the front of the run.

o Calculations shall clearly reference the final computer runs generated to support the calcula-tion.

The reference shall include the unique computer run identifier for each run.

o When computer data is introduced into the calcula-tion, or shown in a table, the source computer run number shall be referenced.

Computer runs shall include a listing of input, in o

addition to output.

o Computer run input and output shall be traceable to originator and date, and reviewer and date.

o Computer runs shall be traceable to the calcula-tion or analysis and revision for which they were generated by indicating the calculation number and revision placed at the front of the run.

o Completed computer runs shall be maintained in a neat and orderly condition, either filed with the calculation or maintained separately.

o The version of computer programs shall be shown on the output.

D.

RESULTS VERIFICATION All calculation or coaputer run results shall contain, as part of the calculation package, a verification.of the final results by the use of alternate or simplified calculational methods.

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ATP-12-Q Revisien 1

Page 7 of 11 LE.

1 CALCULATION REVIEW The Reviewer -shall document his check and have his comments resolved by the responsible Engineer.

F.-

. APPROVAL-Calculations shall be approved by the Project Manager or his designee.

Signature-approval shall be docu-mented on the Calculation Cover Sheet, a form similar

.to Exhibit C.

The approval siginifies that the

. calculation has been properly performed and checked, that inputs have been properly selected, and that'the calculation results support the stated conclusion or

-design.

G.

-REVISIONS Changes to approved calculations shall be documented as 1

calculation revisions. Revisions shall be prepared and approved in the same manner as:the original calcula-tion.

Each calculation revision shall contain a complete documentation record for that revision, and shall be independently verifiable by a Reviewer.

1.

Revision Documentation Changes or revisions to calculations shall be j

l identified ~by documenting the changed revision i

level on the Calculation Cover Sheet. Pages unaf-i fected by the change'shall remain unchanged.

Do-cumentation on-the Calculations Cover Sheet and on the revised pages shall be sufficient to clearly describe the nature and extent of the changes throughout the revision cycle of the calculation.

Superseded calculation pages shall be marked "su-perseded", and copies retained for traceability of l

past calculation revisions. Superseded or voided calculations shall be so noted on the Calculation Log when it is not evident from the revision level l

sequence.

H.

SPECIAL TECHNICAL STUDIES On a case basis, special studies may be performed to evaluate technical problems, nonconformances, or other developments outside.the normal project scope.

These special studies shall b9 documented as calculations as prescribed in this procedure and maintained in a seper-ate Calculation Log as prescribed in IV.A. above.

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a ATP-12-Q Revision 1

Page 8 of 11 I.

QUALITY ASSURANCE RECORDS Completed c'alculations, analyses, special studies and associated computer outputs shall be controlled in accordance with Reference C.

V.

REQUIRED DOCUMENTATION A.

Calculation Log.(Exhibit A)

B..

Calculation Sheet (Exhibit B)

C.

Calculation Cover Sheet (Exhibit C)

- V.__ REFERENCES A.

MTC Quality Assurance Manual (latest revision)

B.-

_ATP-8-Q, MTC Procedure for Control of Computer Programs (latest revision)

C.

ATP-10-Q, MTC Procedure for Document Control (latest revision) l m..

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.ATP-12-Q-Revision 1 1 Calculation Sheet Page lo er 11 EXHIBIT B' Project Project Number Subject '

By Date

- Sheet of Checked Date i

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ATP-12-0 y.

Revision 1 Page 11 of 11 Exhibit C

. Mark Technologies Corporation CALCULATION COVER SHEET.

CALCULATION / PROBLEM NO.:

PROJECT NAME:

PROJECT NUMBER:

TOTAL NUMBER OF PAGES (INCLUDING COVER SHEET):

CALCULATION TITLE:

REFERENCES:

PREPARED BY: 8 DATE 4

REVIEWED BY:

DATE APPROVED BY:

DATE REV. NO.

DESCRIPTION OF REVISION APPROVED BY/DATE

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MIDLAND ENERGY CENTER SPATIAL SYSTEMS INTERACTION ' PROGRAM / SEISMIC CPC0 Document Review / Approval Form Document '

Title:

PROCEDURE FOR RESOLUTION OF SSIP/S POSTULATED INTERACTIONS-Document Number / Revision /Date: 8301-WTP-4-Q/01/ August 26, 1983 TABLE OF_CPC0 REVIEW / APPROVAL OF REVISIONS SSIP/S Rev. No.

Date.

Project Engineer Date MPQAD Date 0

08/10/83 (Issued for C mment) 1' 08/26/83 J

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