ML20198K513

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Rev 0 to Procedure CP-EI-4.5-2, Onsite Hanger Design Group Engineering Instruction. Related Info Encl
ML20198K513
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 10/25/1979
From: Montanaro J, Murray B
TEXAS UTILITIES SERVICES, INC.
To:
Shared Package
ML20197J316 List: ... further results
References
FOIA-85-59 CP-EI-4.5-2, NUDOCS 8606040044
Download: ML20198K513 (18)


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I! " TEXAS UTILITIES SERVICES INC. PROCEDURE REVISION ISSUE pggg NUMBER DATc

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I CP-EI-4.5-2 n a_,c.nl.cf 17 ON SITE HANGER DESIGN GROUP APPROVED WAh v-fj j - g ENGINEERING INSTRUCTION i; PREPARED B / _ex

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v - , y Ifsaw _ l 1.0 GENERAL 1.1 These Engineering Instructions are written for fu . engineered hangers. However, this same basic procedure is used for all random engineered and semi-engineered hangers. 50R ENGINEERING 2.0 PURPOSE 5 OFFir" 'ME ONLY 2.1 The purpose of this ' Engineering Instruction is to previde a system of checks and safeguards to set up the design of

                                                            ,g                     pipe hangers, restraints, guides, etc.

2t:2 2.2 The objective is to insure' that all pipe hangers and ccm-ponents designed by the On Site Hanger Design Group meet

                 ,                                                                 applicable design and functional requirements.

3.0 RESPONSIBILITY

                                         -           h,             3.1 l                                                                                Hanger Design Manager - The overall responsibility of con-
                                                    -T                             formance to the applicable specifications, qualify assurance "S)f i               -

requirements and the coordination of requirements for the design functions of the On Site Hanger Design Grous belongs to the Hanger Design Manager. He is also responsible for the general supervision and execution of engineering and

  )                                        g                                       the assignment of specific projects to a Lead Engineer.

The maintenance and distribution of this Engineering Instruction is the responsibility of the Hanger Design Manager. He also approves all Design Reviewers. 3.2 Lead Hanger Design Engineer - Pipe Hanger Engineering l~i . The Lead Engineer reviews the latest revisions to the drawings and specifications. He is responsibile for the preparation of hanger designs on rough sketches based on i requirements including design specificatiers the pre-1 paration of the job' instructions and the ASME Data Report i for the plate and shell and linear comoonent supports i (whenapplicable). He must insure that all sketches com-

.I'                                                                                ply with code and job requirements. He also assigns a 1
               .;                                                                  Hanger Engineer to a specific project and distributt.s all 8606040044 860527 FolA-85-5g                                                  a ,I PDR FOIA GARDE 85-59                                  PDR                                                                                       ,
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i TEXAS UTILITIES SER/ ICES II;C. PROCEDURE REVISION PAGE

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NUM8ER ____ Cp-EI-4.5-2 0 l10-25-79. 2 of 17 f engineering data to him. The Lead Engineer may be an

                                                 .                            approved Design Reviewer, and it is hi: responsibility to
assure an approved Hanger Engineer other than L% sne who engineered the hangers perform the design review.

3.3 Hanger Design Engineer - pipe Hanger Engineering The Hanger Engineer's duties are assigned to him by the Lead . Engineer. He must perfonn all necessary calculations and prepare rough sketches of the design of the pipe hangers taking into considersation all requirements, design specifi-cations and applicable mechanical, stru:tural, etc. drawings. He may be an approved Design Reviewer. i 3.4 Squad Leader - Orafting b The Squad Leader is responsible for the preparation and

                                                       .%                      revision of hanger drawings from the Hanger Engineer's rough sketches in accordance with job engineering instruc-tions. For proper revision and preparation of the drawings,
   ,                                                ,                          he may delegate certain tasks to a designated Craf ter. He also verifies that all drafting documentation is complete

{ y before it is returned to the Hanger Engineer. The authoHty for performing any function herein assigned N@(( 3.5 to an individual may be delegated by him to any other qualif-ied member within the organizational structure.

               ,-                                 4.0                          HANGER ENGINEERING PROCEDURES
    ,9                                            4.1                          Control of Design Inout On Incoming Drawings
     '[
     ,                                            4.1.1                        8.11 incoming drawings and specifications are received by the Lead Engineer.
 '.' .                                            4.1.2                        The Lead Engineer is responsible for checking all incoming l                                                                            drawings to determine if they are within the Hanger Design Groups scope of work. He must determine requirements for new hanger design and/or revisions to previously designed hangers and prepare required hanger designs in accordance with the project schedule. He is also responsible for re-viewing customer specifications and incorporating them into all design functions.

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NUMBER l

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CP-EI 4.5-2 0 10-25-77 3 of 17 4

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- 4.1.3 The Lead Engineer is responsible for distributing the latest drawings and specifications to the Squad Leader. He must
  ! -:                                                                            assure that the working set of drawings are kept up to date
! )                          .                                                    by marking all previous issues of drawings " void" so that
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only the latest revisions are used.

  !                                                        4.1.3.1                The " Drawing Status Report" will be used to determine the
}            }                                                                    current drawing status.

l ';a ri 4.2 Engineering and Orafting Instructions

  ,                                                        4.2.1                  The Hanger Design Engineer initiates and updates job
  ; 3                                                                             engineering instructions for the preparation of hanger                                                    .

d sketches. The job e

           '.                                                                     the applicable codes,ngineering      , code cases, etc.              instructions      must indicate These instructions are checked by the Lead Engineer and approved by the i                                                                   Manager and are subject to review / revision on a monthly basis or at time of specification revision.

i 4.3 Pipe Hanger Orawings 4 4.3.1 It shall be the responsibility of the Hanger Engineer to

               .                                                                  assure that all changes to drawings which affect his hanger design are taken into account in the design of new hangers t.'                                                                   and the redesign of existing hangers by checking the working
   ! a                                                                             set for the latest revisions.

4.4 Preparation of Hanger Sketches

                                                         '4.4.                    A file is initiated that is referenced by system (or other appropriate reference). The file will contain all infonnation pertinent to hanger design including all preliminary sketches.

finished sketches, calculation sheets, computer input and 'I .- output sheets (if applicable), finshed drawings, processed revisions and cover sheets. Computer sheets may be main-I tained in a separate binder. When a system file becomes

            .                                                                      bulky, finished drawings may be filed separately by the same file designation.                                       ,
  ;             .                                          4.4.2                   A-standard " Cover Sheet". Fonn DHE-3, is used for each system.
                                           \h l                                                                               This sheet identifies the system and hanger sketches and 1

accompanies the sketches thru each phase of their production, i The cover sheet contains a record of who performed each engineering, Q. A. , and draf ting operation. This same cover sheet also records all the revisions made to all listed sketches. Af ter completion of all phases of engineering,0. A. , and drafting, the cover sheet is filed in the system file. l i _ 't*

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TE::As UTIL* TIES SERVICES II'O. PROCEDURE REVIS10!i DATE

                                                                                                                                       *E NUMBER Cp-EI-4.5 2           0   bO-25-79 4 of 17

,l 4.4.3 Rough sketches are prepared on Form OHE-4. Form OHE-4 shall

'!                                                                     contain the information listed on Form OHE-6 or as modified by the job engineering instructions.

'! 4.4.4 Hanger locations are marked on the appropriate work copy of

- the Mechanical drawing using an "X" and the assigned hanger

!. number, or other hanger identification. The appropriate work copy to be marked is the copy of the lastest drawing at the job inception. . When later revisions are issued, the latest issue is stapled 'i , to the marked drawing. In cases where an entire new piping system is added to a new revision, hangers are marked on that

) revision, and it is stapled pemanently with the initial -

marked drawing. Subsequent revisions are treated in a

   ,                                                                   similar fashion. If a drawing revision has no hanger mark-ings on it when a new revision is issued, it is detached from the working set and discarded. The marked Mechanical drawings are retained as a record of the piping which has been supported.

Only one working copy of marked drawings is maintained regard-

    .                                                                  less of the number of engineers working the job.                 .

i, ij 4.4.5 All calculations performed by the Hanger Engineer or Stress Analyst in the design of any hanger, are performed on a

                                                                ,      standard calculation sheet, Form. 0HE-5, which can be cross-referenced to the hanger. All calculation pages should be
    ,                                                                  included (i.e. Page 1 of 10). All calculations are initialed
                                                         ,             and dated in the allocated spaces on the top of the page by the individual performing same.

ii . i.

                                                     .4.5.1            Any type of additional computer analysis used in the design of pipe hangers must undergo the following:

1i' , 4.4.5.1.1 All necessary computer data sheets are filled in by the

           ;j                                                          Hanger Design Engineer.
 .                                                4.4.5.1.2            All Computer Input Sheets are initialed and dated by the
) responsible engineer.

j , 4.4.5.1.3 All necessary computer analysis is then performed.

    ;*          ,                                 4.4.5.1.4            The Hanger Design Engineer is responsible for verifying that 4                                       .                           the computer. input is correct and that the output is within allowable limits.

l{ U 4.4.6 When all preliminary sketches and applicable calculations are completed, the Hanger Design Engineer initials and dates the cover sheet in the Hanger Design Engineer space provided and then forwards all the above to the Lead Design Engineer.

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                                             ! TEXAS UTILITIES SEF" ICES Iri0.                          PROCEDURE             REVISIOi DATE PAGE
                           .                                                                              NUMBM                                                             ;
              .                                                                                                           I                                               l
         ;;: .,                                                                                       Cp-EI-4.5-2 1                 0       10-25-79     5 of 17 5                                  4.4.7                    Upon receipt of preliminary design work from the Hanger Design
Engineer, the Lead Design Engineer reviews the package, initials
         ~1
                                             -                        and dates the Lead Design Engineer space on the cover sheet,
  ',.                                                                 and then forwards same to a Hanger Design Engineer (who has
  ' ~
        .+                                                            not been involved in the original design) for an engineering check and design review. This check and desi n review is

-i N done in accordance with the check off sheet, Form DHE-6). jd This form is attached to the applicable cover sheet. The

  ,     ';f,                                                           Lead Design Engineer may also perform this function.
4
  '4 i                                       4.4.8                     Upon completion of his check and design review, the Hanger
  , d                        .

Design Engineer initials and dates the cover sheet and cal-

          "    ,                                                       culation forms in the Engineer Check / Design Review space pro-l                                                                   vided.

J,, 4.4.9 Rough sketches, calculations, computer input / output, check-off sheet and front sheet are returned to Lead Design Engineer for review. , 4.4.10 The Lead Design Engineer then initials and dates the cover sheet in the Lead Design Engineer space provided and sends i the checked rough sketches with cover sheet to the Draf ting Squad Leader. All other information pertaining to the j . sketches is filed in the system file.

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                                                    'Q                 The 0 rafting Squad Leader reviews for completeness, attaches
    ; :p,                                        '

any special drafting instructions, and then assigns them to

   .     '.                                                            a Drafter.

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        . -}                                       .12                 The Orafter makes an ' initial drawing on Form OHE-7 and makes y                                                             the necessary drafting calculations on the back of DHE-4.                                        -

2 To complete the drawing the drafting department performs

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certain functions with the responsible draftsman initialing v and dating each function on the cover sheet, Form OHE-3, as 7; follows: .

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4.4.12.1 Initial Drafting

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4.4.12.2 First Check (By a different drafter assigned by Squad Leader. .

        ,, 3                                                           Squad Leader may perfom this function).
          ~::
          ,:                                  4.4.12.3                 Proofreading of typing when bill of materials is typed.

4 . 4.4.12.4 Second Check (By a draf ter who performs 4.4.12.2). d 4.4.13 Each finished drawing will be initialed in the OWN space provided on Form OHE-T by draftsman performing the draft-l .]; ing. l u k 4

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  • TEXAS UTILTTIES SERYlCES INC. PROCEDURE REVISION PAGE NUMBER C .-

,t '$ CP-EI 4.5-2 0 10-25-79 6 of 17 0

 .' d0                                             4.4.14                         Upon completion of all drafting operations, the cover sheet, rough sketches and finished drawings are returned to the j                                                                     Squad Leader who in turn returns them to the Hanger Design 9                                                                         Engineer for his approval. Upon completion of a final check
    * 's ,                                                                        of the finished drawings, the Hanger Engineer initials and
     . -f                                                                         dates the drawings in the CHKD space provided on Form OHE-7.
    '1                              .                                             The Hanger Design Engineer is responsible for the sketches
~ 4 compliance with the design specification. The Lead Design
         !)                                                                       Engineer then initials and dates the cover sheet and draw-                         _

y ings indicating his approval in the APPVD space provided.

     'S35
     .                                              4.4.15                        Upon completion, finished drawings are filed with rough sketches, computer input and output sheets, data sheets, cal-(W                                                                            culations and cover sheets in the system file.
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       ~g                                           4.5                           Revisions To Hanger Sketenes b'                                                                        It is the responsibility of the Lead Engineer to assure that 1                                                                        all revised incoming documents (i.e., revises stress iso-3 ?!                                                                         metrics) are taken into account in the design of revised
   ,     h                                                                        hanger drawings in accordance with the project schedule,
         ^

see paragraph 4.1.2 The Lead Engineer shall check the pro-ject drawing record to insure that. the latest information

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is incorporated into his design. l J ' i i 'E 4.5 Revisions to the hanger drawings are reviewed by the Lead

     'D                                                                           Engineer and distributed to the appropriate Hanger Engineer
    ,%                                                                            who assures that agreed upon revisions are made and that

> q f.- drawings are processed as listed in Paragraph 4.4.1 thru

' ; fj                                     ,                                      4.4.15, using the same cover sheet that was used for the t

original design. (" Minor" drafting revisions to finished

     ;.                                                                           drawings may be made by the Hanger Engineer). All revised drawings must be listed on the cover sheet.                          .

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         ;.!                                        4.6                           Approval and Release for Construction
        $                                           4.6.1                         Upon approval by the manager, the finished drawings 'are
        ,f-stamped " Released for Construction".

g 5.0 HANGER ENGINEERING OATA

     '7                                             5.1                           All in-house engineering data is maintained by the Manager, in a manual which is comprised of vendor catalogs, and 4;j                                                                       hanger engineering and drafting standards. It is the res.

M ponsibility of the Manager to see that revisions to the '.i l r: manual are distributed and acknowledged by all Hanger M Design Engineers, Squad Leaders, and Orafters. (Forms I; OHE-9 and DHE-10).

     .11 i        a 6.0                            PROGRESS AND STATUS REPORT
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         . .)                                                                                                                            e CP-EI-4.5-2            0-         !10-25   7 of 17
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        '1.                                        6.1                    A Progress and Status Report, which reflects the current status j .-j                                                                    of the project, is maintained by the Hanger Design Engineer and reviewed by the Lead Design Engineer. This report is maintained
              ;                                                           on a daily basis and compiled using all or part'of the following:

si 6.1.1 Project Drawing Record 6.1.2 System Cover Sheets 6.1.3 Piping Drawing Revision Log - i ' .; 6.1.4 Customer's Design and Sign-Off Sheet 6.1.5 Project Schedule ,

       -{                                          7.0                    TRAINING f

7.1 Training classes are implemented for all new employees. Re-fresher classes are also implemented for all current employees 1 - on, but not exceeding a bi-annual basis. Classes are to follow the course directive stipulated in the Pipe Hanger ,  ; Engineering Training Cou'rse outline. M 7.2 It is the responsibility of the Manager to review this pro-

       *!                                                                 cedure, as well as receive acknowledgement (Form OHE-11) of a                                                             training and refresher courses, frem every employee.
        ')                                                                                                .

j.j 8.0 AUDITS

id ,8.*1 Internal audits are performed by Quality Assurance. Re-

, l' B - sults of audits are documented for review by management , i .' ' } lc-c having responsibility in the area audited. 7... ;

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9.'O ORGANIZATION l ' ,2 9.1 The on site Hanger Design Group organization chart is shown

j on page 8.

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MANAGER, PIPE HANGER ENGINEERING k

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LEAD ENGINEERS = SQUAD LEADER b A > 4, a .

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'i ~ HANGER ENGINEERS DRAFTERS ( lt i 9

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FORM DHI-6 Page 12 of 17

              *6         '

Project Eng.

                     ,                         System                                                                    Date Sketches 5

ENGINEERING AND DESIGN REVIEW CHECK LIST

Part I - Initial Check (Rough sketch)

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  .                                                     Chech Type                                                                                      Tas     ~

No N/A

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Location Pisa l Fipe Size. Elevatico

  -                                                     Steel size, Elevatico                                                                                                      i Diaension.s

. 'j Interfarances i Other Pipes

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                                                         .Paintina Requiremasts i

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    .                                                                                                                                                                                    Page 13 of 17 FORM DME-7
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                                               -                                                                                                           Page 15 of 17 3,r 1,4                           .

3 TO: PIPE HANGER ENGINEERS

           *r        p FROM:                   LOU MONTANARO
  ) .'                                                                                                                                                       .-

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 . i '!                                           This is concerning an addition / revision to the design
  ;             :                                manukl.

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This material contains information pertaining to:

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Please add / replace this in Book No. 1 as pages { . ./, - t

                                                       .     ;Please replace the old table of contents with the new one.
         -                                                                 MANUAL NO.                            RECEIVED BY                      DATE
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    !                                                   MAME:                                                                                        DIPLOYEZ f

( l . THIS ACKNOWLEDCES THAT THE ABOVE MENTIONED HAS RECEIVED SPECIALIZED TMINING

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  • HANGER ENGINCIAING DEPARTMENT LOA 3 CALCULATlON SHEET .
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