View source for IA-86-793, Forwards Ofc of Investigations Rept of Inquiry Q2-85-021 Re Alleged Falsification of Preservice Piping Insp Records by Contractor.W/Nuclear Energy Svcs,Inc Calibr Data Sheets

{{Adams
| number = ML20237G467
| issue date = 09/22/1986
| title = Forwards Ofc of Investigations Rept of Inquiry Q2-85-021 Re Alleged Falsification of Preservice Piping Insp Records by Contractor.W/Nuclear Energy Svcs,Inc Calibr Data Sheets
| author name = Vorse J
| author affiliation = NRC OFFICE OF INVESTIGATIONS (OI)
| addressee name = Grace J
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000000, 05000400
| license number = 
| contact person = 
| case reference number = FOIA-86-596, FOIA-86-793
| document report number = NUDOCS 8708140085
| package number = ML20237G421
| document type = INTERNAL OR EXTERNAL MEMORANDUM, MEMORANDUMS-CORRESPONDENCE
| page count = 34
}}

=Text=
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                          , .                                                                                                       po fA s>s28e0                                  UNITED STATES 9                                                                                        jf /f.U"U
                                   -           k,               NUCLEAR REGULATORY COMMISSION S
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OFFICE OF INVESTIGATIONS FIELD OFFICE REGION ll 7
/
k'+, * * * * * ,o[p                  101 MARIETTA STREET. SUITE 3100 ATLANTA. GEORGIA 30303
                                                                          ;SEPJ2.21986 e
MEMORANDUM FOR:      J. Nelson Grace, Regional Administrator Region II FROM:                James Y. Vorse, Director 8 Office of Investigations Field Office, Region II

==SUBJECT:==
SHEARON HARRIS NUCLEAR POWER PLANT -
     ' '-                                                       ALLEGED FALSIFICATION OF PRESERVICE PIPING INSPECTION RECORDS BY COtiTRACTOR (Q2-85-021)
Enclosed, for whatever action you deem appropriate, is the Office of Investigations Report of Inquiry concerning l                                         the above matter.

==Enclosure:==
As Stated cc w/ enc 1:
B. Uryc, RII:I/ACS E. Gilbert, OI:HQ 1
l l
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l 8708140033 e70811 IN        b96  PDR

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==Subject:==
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==Subject:==
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OlAR S &                                              1*R f *iDIMVWD      d Plant / Unit _TH o p_                                                                                                                              Page            /         of      k Comp /SystemReA OcA                                                                                                      DATA SHEET                Data Sheet No. f57 TO/ -c9e/3 / ?O ISO,,y,g.3                               Loop o/g                                                                                                 Procedure No. _I.f T -fo /
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(ygg &                                                     IS/~~fe/ ~ 0W3 0 o Plant / Unit "                                                                                       Data Sheet No. ru A9/-oWf g. O DATA SHEET Comp / System _                                                        IATION SHEET                  Procedure No.            777- fO/
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Comp / Sys tem Re fte r cia vocc 4evr-                                                     CALIBRATION DATA SHEET Procedure No. J.5r -y vi ISO 4",p'(Loop          #
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                                                                                . _ _ _ _                _ _ _ _ _ _ _ _ _ _ _ _ _ _ _                     a

NUCLEAR ENERGY SERVICES, INC.
A UNIT of THE PENN CENTAAL COAPOAATION February 27, 1985 Refer to:           5565-SRO-073                                                         .
Shearon Harris Nuclear Power Plant P. O. Box 165 Nsw Hill, NC 27562 Attention:            T. W. Brombach Project Specialist

==Subject:==
Evaluation / Recommendations for Flaw In Weld 1-RC-2-FW-7

==Reference:==
: 1. Data Sheet No. IST-501-0444, Dated 1/19/85, Indication #1
: 2. Data Sheet Info Only, Alt. Technique, Dated 2/19/85

==Dear Tom:==

The purpose of this evaluation is to provide a final characterization, primarily a confirmed size for flaw indication noted in Reference 1 above.
CONCLUSIONS
: 1.      The flaw indication (Ref.1) does not exceed the dimensions of allowable flaw indications of IWB-3514-3. This flaw is less than fifty percent of the maximum allowable flaw size and therefore acceptable for service.
: 2.      Flaw characterization provided by Ref. 1 is oversized on the thru-wall dimension by approximately a factor of two (2).                  ,
: 3.      The " Flaw Indication Characterization / Evaluation Report Sheet",
provided in Ref. 1 shculd be superceded by a sheet based on the technique used in Ref. #2.
: 4. The flaw location and orientation repcirted in Ref #1 is confirmed.
The repor:ed flaw . indication length and as stated aboveSensitivity the            j thru-wall dimension muso be re-established (3 above).
compensation shows the length to be discontinuous or multi-                        l l
faceced.
f l
DISCUSSION                                                                                1 1
The flaw indication reported in Ref. #1 was characterized by a                            j number of techniques.                  Some were ineffective as summarized following.      1 1
SOUTHERN REGIONAL OFFICE:
P.O. BOX 1106, CARY, N.C. 27511                                                 (919)467-8972

                                                                                                                                  .     ..__bs 5565-SRO-073 - page 2
: a.                    Straight beam plots from both ID and OD surf aces confirmed the thru-wall location and length.
: b.                     The dual search unit used in Ref. #2 is focused at the(see                                               flaw       a depth location and provides optimized sizing results discussion following).
C.                      Single element shear wave did not provide meaningful results.
: d.                      Neither 50' L wave or 50' shear wave (5 MEZ) techniques provided                                                     l observable satellite pulses for sizing.
The flaw indication orientation is shown as curved,                                               as with a weld bead interlay, in Ref. #1.         This orientation is best re-presented by a side drilled     hole (SDH) for demonstrating sizing technique accuracy. The flaw location, shape, and size approxi-mates the 3/16 SDH in calibration block UT-8 used during the I                             examinations. Figure 1(A) displays theFigure 3/16 SDH.with the observed 1(A) shows an size using the technique in Ref. #1.
apparent thru-wall dimension of approximately 0.5 inch (2.7 times the 0.1875 actual). Figure 1(B) which represents the search unit and technique in Ref. #2 shows a measured thru-wall dimension approximating the actual 3/16 SDH size.
RECOMMENDATIONS
: 1.                        That the report by Ref. #1 be supplemented with the characteri-zatica provided by Ref. #2. A new Flaw Indication characterize-tion / Evaluation Sheet be provided which reflects Ref. #2 results.
: 2.                         That the Flaw indication (Indication #1 Ref. 1) . be accepted for service w th provisions for monitoring for growth in accordance wi h D73-2420 (b) and (c). IWB-2420 requires re-examina:icn for the next 3 ISI periods. If the 3 re-examinations reveal essentially no change in flaw size, this weld examination wculd revert tc the normal schedule of successive inspecticas.
Very trul; yours, NUCLEAR ENERGY SERVICES
                                 ~
s*                          w C. D. Cowfer, Director Southern Regional Operations CDC:hkj Attachments cc:                             P. Barry         T. McMahon J. Hewett          S. Pruitt S. Larson         R. Saunders T. Lentz          D. Murdock
        . _ _ .                                                              - - ~ - - - . _ - - . _ _ _ _ _ . _ _ _ _     _     _

Z 5 r @ /~ O +'+' y FLAW SIZING EVALUATZO10-TWO DUAL TECHNIQUES A'.-    45* DUAL L-1" x 1"~Dia". 1 MHZ
                                                                                                                                    ~J22162 J22163-
                                     >F           .M                                     D,-
                    ,                 1              i                                   .-
                                              /1                                         i FWD             BACKWARD W   MAX       50%      MAX         50%   MAX
                                                                     .                                 W   MP.       W1       MP-         W2    MP Depth              Depth             Depth 2.8 4.0        2.35     3 '. 4      3.35   5.1 a
     ' B. 45'' DUAL L 3/8" x 3/4" 1.5 MHZ
{4 f                                C14487 FWD           BACKWARD W     MAX     50%       MAX     50%   MAX W     MP      W,        MP     -U ;   MP 2.8   3.3     2.62      3.0     3.10   3.7 1
FIGURE 1
       .5565-SRO-073 - page 3 l
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