ML20151W321

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Rev 4 to RT-ASME Iii/Xi, NDE Std Radiography
ML20151W321
Person / Time
Site: Limerick Constellation icon.png
Issue date: 07/10/1987
From: Matthew Mitchell
BECHTEL POWER CORP.
To:
Shared Package
ML20151W267 List:
References
RT-ASME-III-XI, NUDOCS 8808240046
Download: ML20151W321 (19)
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Text

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) ~ VM PA /R w Q C< - P- S o ,5 (v Page 1 of 19 BECHTEL CONSTRUCTION, INC.

NONDESTRUCTIVE EXAMINATION STANDARD RADIOGRAPHY RT-ASME III/XI July 8, 1987 REV. 4 Date M ATERIALS AND QUALITY SERVICES M 7!9187 Prepared and Approv[NDE Level lli Examiner Date Authortzed for use by Reviewed $ $ II "L 7Adn For M. J.

Date 11 Approved '

M Me/97 Manager of Construction Cate'

~ Mane M&WS v

'Date '

FOR LIMERICK ONLY IAALE OF COMIF.NTS 'R' "C * 'V':-'D HOV 0 51987 1.0 SCOPE BECHTEL q g 2.0 REFERENCE S r 3.0 PERSONNEL REQUIREMENTS 4.0 EQUIPMEFI/ MATERIAL REQUIREMEh7S

5. 0 EXAMINATION C ERAC

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8.0 TECHNIQUE REQ I

9. 0 HANDLING AND DEVELOPMENT OF FILM 10.0 ACCEPTANCE STANDARDS 11.0 RECORDS 12.0 NONDESTRUCTIVE EXAMINATICH SUBCONTRACTORS kph M $
b. l. Y irr Y A S $* l6dCfW /0f21 Jf

- 4 l07/08/87) Incorporate FCR No. LP-1269 "3 09/17/86I Incorporate PLB No. 19420 and FCR No. WE34

  • 2 07/25/86 Incorporate Client Corme n t s

{ 1 05/07/86 Incorporate ANII/ Client Coc=en t s 0 101/17/861 Initial Issue 8808240046 000015 NO. I OATE {DR ADOCK 05000353 REVtSJONS PNV

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D*cument No. RT-ASME III/XI Ray.  !

'4 (For Limerick only s

1. 0 Pane 2 of 19 SCOPE 1.1 l This procedure specifies the minimum requirements for performing radiographic Section examination V, Article 2. in accordance with ASME Boiler and Pressure Ve General requirements applicable to the production and ,

review of radiographs for the Code editions specified in Section 2.0 are prov 1.2 .

This procedure is applicable to radiographic examination of fer-itic austenitic, plant high nickel piping system alloy, velds and aluminum and aluminum alloy materials used components.

power in 0.10 inches to 6.00 inches are included. Nominal material thicknesses f rom A _1. 3 subcontractor NDE personnel when performing radiographi

2.0 REFERENCES

2.1 ASME Winter 1974 Boiler Addenda. and Pressure Vessel Code,Section III,1974 Edition throug

_2 . 2 Winter 1974ASME Boiler Addenda. and Pressure 7essel Code, Section. V,1974 ' Edition through

~

2.3 .

ASME Boiler and Pressure Vessel Code,Section V, 1980 Edition through .

Winter 1981 Addenda.

g 2.4 Winter 1981ASME Boiler Addenda. and Pressure Vessel Code,Section XI,1980 Edition through 2.5 SNT-TC-1A, American Society 1980 Edition. for Nondest ructive Testing, Recommended Practice 2.6 Qualification and Ce rtification."Bechtel Nondestructive Examination Standard NEP 2.7 i Bechtel Nondestructive Examination Standard NEPQ-2, "Level I and II Personnel Qualification and Certification."

2.8 Bechtel Construction Procedure CP-W-4, Preservice Inspection of Nuclear Piping Systems.

3.0 PERSONNEL REQUIREMENTS .

3.1 Bechtel personnel interpreting and evaluating radiographs to this procedure shall be qualified and certified NDE Level II or III, in accordance with the applicable Bechtel Nondestructive Examination Personnel Qualification Standard, NEPQ, developed from Recommended Practice, SNT-TC-LA,1980 Edition.

I 3.1.1 Subcontractor personnel shall comply with paragraph 12.5 of this procedure.

l 3 A 3.2 Radiographs discontinuities shallLevel by an NDE be interpreted II o> III toand evaluated for film quality and for code and this procedure. ensure compliance with the referenced E

e-Document No. RT-ASME III/XI Rev. 4 (For Limerick Only) Page 3 of 19 4.0 EQUIPMENT / MATERIAL REQUIREMENTS O 4.1 Film Selection 4.1.1 Radiographic film shall be either Type 1 or Type 2 f rom Table 2, of Recommended Practice SE-94.

4.2 Penetrameters 4.2.1 Penetrameters shall be manufactured and identified as required by ASME Section V, Article 2, unless otherwise specified.

4.3 Film Holders /Sc reens 1

4.3.1 Each film holder shall contain a front and back lead intensifying screen.

Neither screen shall exceed 0.010 inches thick. As a check on backscattered radiation, a lead symbol "B" with minimum dimensions of 1/2 inch in height and 1/16 inch in thickness, shall be attached to the back of each film holder.

4.4 Filters 4.4.1 Filters may be used to reduce objectitmabla statter radiation.

4.5 Densitometers 4.5.1 A densicometer shall be used for measuring film densities. Calibration of

() densitometers shall be verified by comparison with a calibrated density strip which in traceable to Nacional Bureau of Standards. The verification film scrip will be replaced annually and may be developed by comparison to the master calibration strip .which will be used quarterly to establish densitometer calibration.

J 4.6 Lead Location Markers 4.6.1 Location markers or any other identifying symbols shall consist of lead between 1/4 and 1/2 inch in height.

4.7 Shims 4.7.1 Penetrameter shim size shall exceed the penetrameter size by at least 1/8 inch on three sides, and shall be radiographically similar to the material .

under examination. I l

4.8 Radiation Sources l 4.8.1 The acceptable sources of radiation are:

X-ray machines l

Cobalt-60 1 Iridium-192 o

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As) u.

4.9 Film Viewing

< j[.I 4.9.1 Viewing equipment shall have a variable control for the high intensity a ,. light s ou rc e .

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s RT-ASME III/XI Documen t No. Re v. 4 (For Limerick Only) Page 4 of 19 5.0 EXAMINATION COVERAGE O 5.1 Radiography performed to ASME Section III shall cover the entire volume of the weld.

5. 2 Radiography performed to ASME Section XI shall cover the entire volume of the weld plus the base material for a minimum distance of 1/4 inch f rom each toe of the weld.

5.3 Radiography performed to include both ASME Section III and Section XI shall conform to the requirements of paragraph 5.2.

6. 0 SURFACE PREPARATION 6.1 Materials 6.1.1 Prior to final radiography, surf aces shall satisfy the requirements of the applicable materials specifications, and all other planned NDE methods, with additional conditioning, if necessary, to a degree that surf ace irregularities cannot mask or be confuted with discontinuities.

6.2 Weld Surfaces 6.2.1 Welds being radiogt4phed need only be prepared to the extent necessary that the resulting radiographic image is free of any irregularities that could mask discontinuities.

O 7. 0 IDENTIFICATION 7.1 Film Identification 7.1.1 Each radiograph shall be identified through the use of lead numbers and/or letters or by an identification printer. The method used by subcontractors shall be at the option of Bechtel. The radiographic identification shall include the following informati6n: .

1) Bechtel identification
2) Bechtel job number
3) Component , vessel or piping identification
4) Seam or weld identification
5) R for Repair - R2, R3, etc., if more than one repair
6) Date of radiography
7) Subcontractor's identification ni@ 8) When radiographs are misidentified, they may be reidentified with

()

m correction tape, i.e., Avery Self-Adhesive Correction Tape or equivalent. This may be done only when the Lead Field Welding Quality EI-.* Control Engineer (LFWQCE) or his designee has determined that it is gg impractical to reradiograph, i.e., inaccessibility, etc., or N$

l Document No. RT-ASME III/XI Re v. 4 (For Limerick Only) Page 5 19 l of C) 1 with correction tape,'a special log shall be maintained by the LFWCE l or his designee showing the misidentification, the corrected i identification, and the signature of the LFWQCE or his designee.

7.2 Location Markers 7.2.1 Location markers shall be used to ensure complete coverage and shall not interfere with the area of interest. Location markers shall be placed (source side or film side), as required in note 3 of Table 1. 1 7.2.1.1 If the veld is ground flush with the adjacent base material, lead arrows or "V's" shall be placed on the base metal at the extremities of the film to assure that the' area of interest can be accurately located on the radiograph.

lead arrows or "V's" should be placed approximately 1/4 inch away f rom the edgeThe of the veld opposite the film location markers, and outside the length of the area of interest.

7.2.2 For pipe diameters up to 3-1/2 inch, inclusive, the location markers represent degrees of circumference, e.g., "0" and **90* for elliptical exposure s, "0", "60" and "120" for superimposed exposuru.

%= "0" strait be M.i.4 pe r paragraph 7.2.4.

7.2.3 For pipe diameters over 3-1/2 inches, a number belt shall be used, with the following spacing, when practical:

Nouinal Outside Diameter (inehes) Spacing over 3-1/2,thru 10 1 inch apart over 10 2 inches apart 7.2.4 The "Location-0" datum shall be in accordance with Construction Procedure No. CP-W4.

8.0 TECHNIQUE REQUIRIMEfffS 8.1 Radiographic examination shall be performed at the time stated in the applicable job specification.

8.2 Penetrameters 8.2.1 Radiography shall be performed with a technique of sufficient sensitivity to display the penetrameter image, identifying numbers / letters and the specified hole listed in Table 2 or 3, as applicable. Penetrameter selection shall be as referenced in Table 1, Note 1. Thinner penetrameters than specified may be used, but a larger hole is not permitted for judging sensitivity.

8.2.1.1 Backing rings, when used, shall not be considered for penetrameter selection; however, the backing ring and Code allowed reinforcement shall be 9 considered for the use of shims under the penetrameter as referenced in section 8.2.4 of this procedure.

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4 Document No. RT-ASME III/XI Rev. 4 (For Limerick Only) Fame 6 og 19 8.2.2 Penetrameter Placement A 8.2.2.1 A penetrameter shall be placed on the source side, out of the area of interest. In instances where weld metal is not radiographically similar to clie base material (as categorized in Appendix Al of SE-142) or geometric configuration makes it impractical, the penetrameter shall be placed on the veld metal. If the penetrameter is placed in the area of interest, a second exposure should be taken with the penetrameter relocated, as not to mask the first location.

8.2.2.2 When inaccessibility prevents placing the penetrameter on the source side, the per.tcrameter shall be placed on the film side of the part. A lead let te r "F,"

at least as high as the identification number, shall be placed adjacent to the penetrameter.

8.2.2.3 The identification number ( s) and the lead letter "F", when used, shall not be in the area of interest.

8.2.2.4 When configuration or size prevents placing the penetrameter on the part, it may be placed on a separate block as provided in SE-142 of ASME Section V.-

8.2.3 habax of 1sastzamataz.s 8.2.3.1 A minimum of one penetrameter shall be used for each radiograph except as provided in 8.2.3.3 for panoramic exposures. Each penetrameter shall represent an area of essentially uniform radiographic density.

8.2.3.2 Should the density of .*.he radiograph anywhere through the area of interest l

vary by more than minus 15 percent or plus 30 perce'nt f rom the density through the l body of the penetrameter, then an additional penetranstar shall be used for each l exceptional area or areas and the radlograph retaken. One penetrameter shall l represent the lightest area of interest and a second penetrameter shall represent I

the darkest. Intervening densities shall be considered as having acceptable density.

8.2.3.3 Where one or more exposure holder / cassette is used for an exposure, a penetrameter image shall appear on each radiograph, except where the source is placed on the axis of the object and the complete circumference is radiographed with a single exposure (panoramic exposure), in which case at least '* ee equally spaced penetrameters shall be used. Where portions of longitudinal Jds adjoining the circumferential weld are being examined simultaneously -un the circumferential veld, additional penetrameters shall be placed on the longitudinal welds at the ends of the sections of those welds being radiographed. When an array of objects in a circle are radiographed, at least one penetrameter shall show on each object image.

8.2.4 Shims Under Penetrameters 8.2.4.1 If the veld reinforcement and/or backing strip are not removed, a shim shall be placed under the penetrameter. The shim thickness shall be selected so that the total thickness being radiographed under the penetrameter is essentially 3 the same as the total weld thickness plus backing strip, if used and not removed, l ,I and other thickness variations such as in nozzle geometries.

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Document No. RT-ASME III/XI Rev. 4 (For Limerick Only) Page 7 of 19

/' N 8.3 Radiation Source Selection U

8.3.1 X-Radiation 8.3.1.1 ASHI Section V, Article 2, Figures T-240(a), (b) or (c) shall be used as a guide in the selection of X-radiation sources.

8.3.2 Isotope Radiation 8.3.2.1 The recommended minimum thickness for which radioactive isotopes may be used are as follows:

Minimum Thickness Material Iridium 192 Cobalt 60 Steel 0.75 inch 1. 50 inc h High Nickel 0.65 inch 1.30 inch 8.3.3 n =A 4 = r i na 3=1 =r r ian Vari = r inn a -

8.3.3.1 When it is not practical to perform radiography within the limitations -

outlined in 8.3.1 or 8.3.2, or when radioactive isotopes other than Iridium 192 or Cobalt 60 are used, the procedure shall be proven satisfactory by actual

(~ demonstration of penetrameter resolutioe on the minimum thickness of the material

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radiographed. The technique shall be approved by a Bechtel M&QS Level III or approved designee.

8.4 Geometrical Unsharpness 8.4.1 Geometrical unsharpness, "Ug," equals source size multiplied by the thickness and divided by the object-to-source distance.

Ug = Ft/D Ug = Geometrical Unsharpness

F = Source size in inches, the maximum effective dimension of the I radiating source (or focal spot) in the plane of the distance (D) from the veld or object being radiographed.

D = Distance in inches from the source of radiation to the weld or other object being radiographed.

  • t = Thickness in inches from the source side of the object being radiographed to the film.

8.4.2 The geometric unsharpness of the radiograph shall not exceed the following:

Material Ug Thickness, inches Maximum, inches l

l 2 and Under 0.020 l -

. Over 2 Through 4 0.030 l kt, -

Over 4 0.070 l

Gs E2

Document No. RT-ASME III/XI Rev. 4 (For Limerick Only) Page 8 of 19 8.5 Specific Exposure / Viewing Requirements 8 . 5 . '. Penetrameter designation, type of exposure / viewing, and number of exposures shall be as specified in Table 1.

8. 6 Number of Film 8.6.1 exposure.

Each film holder shall contain a minimum of twe sheets of film for each

9. 0 HANDLING AND DEVELOPMINT OF FILM 9.1 Unexposed film shall be stored in a clean, dry area where the emulsion wi.11 not be affected by heat, radiation, harmful vapors, or moisture. Film that is beyond the manufacturer's expiration date shall not be used.

9.2 Part III of Recommended Practice SE-94 of ASME Section V shall be used at a guide for processing film.

9.3 Film Viewing -

9.3.1 Film shall be viewed in an area with esbdued lighting which vill not cause reflections from the film surface which will. interfere with adequate interpretation.

9.3.2 Extraneous light from the illuminator shall be masked when viewing the O radiograph.

9.3.3 Radiographs shall be interpreted only for that area in which the penetrameter(s) .have established that a suitable radiographic technique has been used.

9.3.4 The film density through the body of the appropriate penetrameter and the area of interest shall be 2.0 minimum to 3.8 maximum for single film viewing of radiographs. A tolerance of 0.05 density is allowed for variations between densitometer readings.

9.3.5 Composite viewing of double film exposure is not permitted unless approved ,

by a Bechtel M&QS Laval III or approved designee. If approved, the density shall l be a minimum of 2.6 for composite film with a minimum density of 1.3 for each film of the composite sat.

9.3.6 The radiographic film density of the area of interest shall be compared to l

the density of the penetrameter. The density in the area of interest must be

} between minus 15 and plus 30 percent of the value taken through the penetrameter

} and within the allowable density range specified in 9.3.4.

9.3.7 If a light image of the "B" appears on a darker background on the radiograph, protection from backscatter is insufficient and the radiograph shall be considered unacceptable and the radiograph retaken. A dark image of the "B" on

.~

" a lighter background is not cause for rejection provided it does not interfere with interpretation.

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Decument N% RT-ASME III/XI Rev. 4 (For Limerick Oniv) Fate 9 of 19 9.3.8 All radiographs shall be free from mechanical, chemical, or other O

d blemishes to the extent that they cannot mask or be confused with the image of any discontinuity in the area of interest of the object being radiographed. S uc h blemishes include, but are not limited to:

1) fogging; 2)
3) processing defects such as streaks, water marks, or chemical stains;
4) sc ratche s , finger marks, c rimp s, dirt, static marks, smudges, or tears ;

loss of detail due to poor screen-to-film contact; 5) false indications due to defective screens or internal faults.

10.0 ACCEPTANCE STANDARDS

. 10.1 Final Interpretation of Radiographs A 10.1.1 Radiographs shall be interpreted and evaluated for film quality and for discontinuities only by a Bechtel NDE Level II or III certified by examination to this procedure to ensure understanding of the referenced code and this procedure.

10.1.1.1 In cases where there is a question regarding the surface condition of the veld on the interpretation of the radiograph, the fi.la shall be compared to the actual . weld surf ace for interpretation and detefaination of acceptability. ,

10.1.2 The Bechtel NDE Level II or III shall record on a review form accompanying the radiographs, the interpretation of each radiograph and disposition of the material examined.

10.1.3 set The information required in paragraphs 11.2 and 11.3 shall accompany each of radiographs. Reference to a standard setup is acceptable if descriptions of this standard setup are readily available.

10.2 For Section III, examination of material adjacent to or beneath a weld or weld build-up shall be as acated in the specific material specification or NB-2500, NC-2500 rnd ND-2500 as applicable.

10.3 Welds that are shown 'by radiography to have any of the following types of discontinuities shall be judged unacceptable.

1) Any type of crack or zone of incomplete fusion or penetration.
2) Any other elongated indication which has a length greater than:

1/4 inch for t up to 3/4 inch inclusive, 1/3 e for e from 3/4 inch to 2-1/4 inch inclusive, 3/4 inch for e over 2-1/4 inch.

(t = thickness of the thinner portion of the veld)

3) Any group of indications in line that have an aggregate length greater than e in a length of 12t, except when the distance between the successive imperfections exceed 6L. (t = thickness of weld, L =

pE length of the longest imperfection in the group) v 0 >'

2

Documen t No. RT-ASME III/XI Na v. 4 (For 1.imerick Only) Fame 10 of 19

4) Rounded indications in excess of those specified in the rounded

=

indications charts of ASME III, Appendix VI, except for subsection NF, in which rounded indications are not a factor in the acceptability of welds which are radiographed.

5) Root concavity on single welded circumferential butt velds, which displays a higher radiographic film density than the density of the thinner member of the two sections being joined.

10.3.1 Internal root veld conditions are acceptable when the density change as indicated in the radiograph is not abrupt.

10.4 For Section XI,1980 Edition with Winter 1981 Addenda examinations, discontinuities are unacceptable if after characterization (paragraphs 10.4.1 and 10.4.2) they exceed the allowable a/t, % value when compared to the applicable acceptance Table 4 (ferritic) or Table 5 (austenitic and high nickel alloy material).

10.4.1 Discontinuities shall initially be characterized as surface indications.

This is achieved by measuring the length (1) of the discontinuity, then dividing that dima.nsion by 2. This calculation provides the "a" dimension, which is divided by the wall thickness (% 100), and a realo (a/t, 2) is derived for ,

comparison to the "surface" column in the acceptance tables.

10.4.2 Should a discontinuity be evaluated to be an unacceptable surface indication, the actual throughwall dimensions "S" and "a" may be determined using O UT or other approved methods. This will determine if the ladication is surface or subsurf ace and a new ratio (a/t, %) may be derived and compared to the applicable column in the acceptance tables.

10.5 Regardless of Code or material, acceptable significant indications that require evaluation and interpretac!on to determine their acceptability shall be recorded and the disposition indicated on the review form. The method of determining acceptability (i.e., visual, density check, dimensional, other NDE methods, etc.) shall be noted on the radiographic review form. Supplementarv documentation as necessary shall ba included with the final report.

10.6 Areas that have been repaired shall be reradiographed to the requirements of this procedure. The repair radiographs shall be identified by an R1, R2, etc.,

as appropriate. The radiograph of the repaired area shall extend beyond the ropair to the extent necessary to assure that the total area repaired has been radiographed.

NOTE: It is generally recommended to have radiographic coverage 2 inches beycnd the length of the repair. In some instances, hosever, it may be necessary to reradiograph the adjacent views to prc,ve that coverage has been attained.

10.6.1 The original radiograph of the rejected area shall be available for comparison with the repair radiograph to assure acceptability of the repair and adequacy of coverage.

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I Documen t No. RT-ASNE III/XI Re v . 4 (For Limerick Only) Page 11 of 19 11.0 RECORDS I)

A 11.1 The form attached to this procedure shall be used.

11.2 As a minimum, the following information shall be recorded:

A 11.2.1 Report number, date, Bechtel job number, name of the subcontractor company, and the be documented onapplicable ASME Code Section. More than one code reference may a single report.

11.2.2 Weld and/or component designation.

11.2.3 Radiation source type.

  • 11.2.4 Film brand type.

11.2.5 A film quality evaluation covering density and film quality.

11.2.6 The name and certification level of personnel performing and/or interpreting radiograpFy.

11.3 The following information shall either be providad on each film jacket.or report f o nn.

11.3.1 Shooting sketch showing the geometric arrangement of source, weld, film, penetrameters or reference to a standard shooting sketch.

O 11.3.2 Source to veld or object distance.

11.3.3 Effective focal spot of the radiation source.

11.3.4 Calculated geomet ric unsharpness.

11.3.5 Shim thickness.

11.4 All records of radiographic examination including informational exposures shall be submitted to the responsible Bechtel individual for disposition. Final acceptance radiographs shall be maintained with the permanent job files. Each exposed film shall be maintained in such a manner that there is no e.ontact between the films, e.g., interleaving paper between the film.

A 11. 5 A copy of the certification records for all personnel performing or evaluating radiographic examination to this procedure and a copy of the certification record of the examiner who certified them, shall be maintained on file at the jobsite.

11.6 Complete qealification and certification records for Bechtel NDE personnel are maints'Ted on file at the Materials and Quality Services office in San Francisco.

, 12.0 NONDESTRUCTIVE EXAMINATION SUBCONTRACTORS

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A 12.1 A subcontractor may be authorized to use this procedure, subject to PEco's EJ approval.

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. Document No. RT-ASME III/XI Rev . "4 (Tcr Limerick Only) Fame 12 of 19 12.2

/' Before a subcontractor procedure is used, the proposed radiographic

\-}/ examination procedure shall be submitted for review by a Bechtel M&QS Level III and approval by Bechtel Project Engineering. Subcontractor radiographic examination procedures which will be used for ASME Section XI purposes also require review and approval by PECo Engineering. Approved procedures shall remain permanently on file at the jobsite.

A 12.2.1 The subcontractor's procedure shall be equivalent in all essential respects to this procedure sections specified and shall be qualified to meet the referenced codes and in this procedure.

A 12.3 Records of radiographic examination performed by a nondestructive examination paragraph subcontractor 11.0 shall contain the same information as raquired by of this procedure. '

12.4 A Bechtel NDE Level II or Level III shall be responsible for the evaluation and disposition of all radiographic examination results and reports prepared and submitted by the NDE subcontractor's personnel.

A 12.5 Complete qualification and certification records for each 1Ent subcontractor individual who will be performing rad.lographis 4saminations' to this procedure, and the qualification and certification record of the examiner who ,

certified each individual, shall be submitted for review and acceptence by a -

Bechtel Level III within M&QS prior to the beginning of any examination. The Subcontractors vricten practice for qualification and certification of NDE personnel per references 2.4 and 2.5 of this procedure shall be submitted for review and acceptance by Bechtel M&QS.

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Document Mc. RT-ASME III/XI Re v . 4 (For Limerick Only) Page 13 of 19 m

b TABLE 1 INominal l l Type of IPenetrameteri Minimum l l loutside l l Exposure l Table l Nunber of i Figure l IDiameter! I and Viewing 1 (1) (2) l Exposures (3)l (4) l I i l Dbl. Wall Exp. I 3 l 2 l 1(E) l l 3-1/2" lElliptical 1D11. Wall Viewing i I (0,90) l l l l l Dbl. Wall Exp. I 3 1 4 1 1(C, D, l I or lElliotical ISgl. Wall Viewing l l(0,90,180,270)l or E) l l l l Dbl. Wall Exp. i 3 1 3 i 1(F) l l Less ISuperimposedlDbl. Wall Viewing l l (0,60,120) l l l j l Dbl. Wall Exp. I 3 j 4 l 1(A or 3)l

! Above IContact l Sal. Wall Viewing i l(0,90,180,270)l l ISgl. Wall Exp.

i l I 2 1 1 1 2( A or 3))

l 3-1/2" l Panoramic lSgl. Wall Viewing l l l l l l ISgl. Wall Exp. l 2 j 4 l 2(C or D)l l l ISal. Wall Vievimr I l (0,90.130,270) l l l l lSgl. Wall Exp. I 2 i 4 l 2(E or F)l l 1 ISal. Wall Viewins I 1(0,90,180,270)I . I NOTES:

1) Penetrameter selection per Tables 2 and 3 shall be based on nominal single wall thickness plus the reinforcement permitted by the referencing Code section. For any material thickness range, a thinner penetrameter than listed for that range may be used, provided all other requirements for radiography are met.
2) Techniques other than those described in Table 1 may be used with the approval of an M&QS NDE Level III individual or approved designee.
3) Location markers shall be placed as follows:

Source side for radiographic techniques shown in Fig. 2(E or F)

Film side for radiographic techniques shown in Fig. 2(C or D), 1( A, B, C or D)

Either side for radiographic techniques shown in Fig. 1(E or F),

Fig. 2(A or 5)

For double-wall viewing, at least one location marker shall be placed on the outside surface adjacent to the weld.

4) PEco Engineering approval is required prior to using the radiographic techniques shown in Figures 2(B), 2(D) and 2(F) for ASME Section XI purposes.

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Docum nt No. RT-ASME III/XI Rev. 4 (For Limerick only) Page 14 of 19 TABLE 2 MATERIAL THICKNESS , PENETRAMETER DESIGNATIONS, AND ESSENTIAL HOLES FOR SINGLE-WALL RADIOGRAPHIC TECHNIQUE Penetrameter Source Side Film Side Nominal Single-Wall Material Thickness Essential Essential Range, in. Designation Hole Designation Hole Up to 0.25 incl. 5 4T 5 4T over 0.25 thru 0.375 7 4T 7 4T Over 0.375 thru 0;50 10 4T 10 4T Over 0.50 thru 0.625 12 4T 12 4T Over 0.625 thru 0.75 15 4T 12 4T Over 0. 73 thru 0. 875 17 4T 15 4T Over 0.875 thru 1.00 20 27 15 2T Over 1.00 thru 1.25 25 27 17 JT Over 1.25 thru 1.50 30 2T 20 2T Over 1.50 thru 2.00 35 2T 25 2T Over 2.00 thru 2.50 40 2T 30 2T over 2.50 thru 3.00 45 2T O Over 3.00 thru 4.00 Over 4.00 thru 6.00 50 2T 35 40 2T 2T 60 2T 45 2T TABLE 3 MATERIAL, THICKNESS, PENETRAMETER DESIGNATIONS, AND ESSENTIA'.

HOLES FOR THE DOUBLE-WALL TECHNIQUE Penetrameter Film or Source Side S ingle-Wall Material Thickness Essential Range, in. Designation Hole O thru 0.375 10 4T Over 0.375 thru 0.625 12 4T Over 0.625 thru 0.875 15 4T Over 0,875 thru 1.00 17 4T Over 1.00 thru 1.50 25 2T -

Over 1.50 thru 2.50 30 2T Over 2.50 thru 3.00 35 2T Q

v3 over 3.00 thru 4.00 over 4.00 thru 6.00 40 45 2T 2T E -.,

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~

Fero HQS-8tev. 1 e,d O O O

TABLE 4 o a

Al.LOWABLE PLANAR INDICATIONS e g

a, I

Material: Ferritic steels that meet the requirements of NB-2300 and e the specified minimum yie id strength of 50 kai or lean at 100*F .

. [

Volumeeric EnamoreJen asethsd, Nesannal Wall Thkhmets,' 8 e, ks.

$e 0312 10 2.0 30 4 0 and ever m Aspect T.wfme Saeemrface sustae Seenstface Surface k

Seeinface Shrface Seesurfme Swfue $4surfme

%:ig t<cateen, l.arau u tam WmA u s q, saecas.eg, hdicasseau inecasien, I*== Indication, laa-a *' "

i. eW els, % els, % els, % e st, % e tt, % e tt, % e tt, % els, % m els, % e ls, %

1 Prew E -maam 0 00 F.4 92Y 6.7 84Y SF F.2Y 4~ SSY 3.7 4 6Y l 00S 7.9 96Y F.2 S.FY 62 F.SY SO 6. lY 40 4 SY 0 10 8.7 10 4Y F.S 9.SY 68 8. !Y S.S 6 6Y 4.3 S2Y

0.15 96 ll.SY SS 10.SY F.S 9 OY 6.1 7.3 Y 48 SSY 0 20 96 ll.SY 9.9 II SY S4 10.lY 02S 96 II.SY 99 II SY 9S Il 4Y 6.9 F.8 8 2Y
9. lY S4 6I 6 SY g F.3Y 4 0.30 96 ll.SY 9.9 alSY 95 ll.4 Y 88 10.SY 6.9
  • 8.2 Y j 0.35 96 ll.SY 9.9 II SY 95 114Y 88 II SY 6.9 9 3Y 0 40 96  !!.SY 9.9  !! SY p 95 I! 4Y 88 II SY 69 10.4 Y 0 45 96 ll.SY 99 It AY 9S II .4 Y da ll.SY 69 II.6Y '=2 0 SO 96 31.SY 9.9 Il SY 9.5 31.4 8.8 I1.SY 69 II 6Y k latervice Esamination r-0 00 11.1 13 8Y 10 0 12.6Y SS RO SY f.0 8. F*

0 05 l4 4Y S.S 6.9Y E'

!! S IP S 13 SY 9.3 II.2 Y F.S 9.l Y 60 7.2Y $

0 10 13.0 15 6Y ll S 14.2 Y 10.2 12.l Y dl 9.9Y 64 7SY g*

i 0 IS 14.4 I F.2Y 13.2 IS.FY 13.2 13.SY 4.1 10.9Y F.2 S.FY 0 20 re 14 4 SF 2Y I48 II.FY R2 6 IS BY 18 3 12.3 Y S.1 9 7 Y' 0 25 14 4 I F.2 Y le s I F.F Y I42 I F.I Y o

18.7 13.9Y 9.1 10 9Y D 0 30 14 4 I48 IF.FY IF.lY

] 0 35 14 4 I F.2 Y 172Y le s IF.F Y I42 I42 I F. l Y 13.2

$ 3.2 IS.FY 10.3 12.3 Y k I F.F Y 10.3 13 9Y 0 40 F4 4 IF 2Y I48 IF.FY I4.2 I F.lY $ 3.2, IF.FY 10.3 IS 6Y 0 45 I44 IF 2Y I48 I F.F Y I42 I F.IY 11.2 IF.FY 10 3 IF.4Y 0.50 I44 I F.2 Y I48 I F.F Y I42 I F.lY 13 2 IF.FY 10.3 I F.4 Y

) 860iLS: s"e m

! 818 For anaernwd ate flaw aspect sateos al/ arut thsharst 8, lanear enterposation as pernussese.

j (25 e as montanal ma18 thukaess er actuas mass sauchness as deternianed 6y UI emanunaseen. "

ela the toaas depsh of a saatna., face en& cation es 2a.

) t48 Y = 45 tellia1st - 5 lo. If Y < 0 4. she flaw andicateen as cansatied as a sierface uutuatumi. If Y > I 0, se Y - I 0. o j e i

1 1

i

^b 5

Document No. RT-ASME III/XI Ra y. 4 (For Limerick Only) Page 16 of 19 O.

TABLE 5 ALLOWABLE PLAFAR INDICATIONS '

Material: Austenitic steels and high nickel alloy sterial that meet the requirements of N5-2300 and the specified minimum yield strength of 50 kai or less at 100'T Volumetric Esammacon Meeod, Nomad Wall Thickness,' 8 t, in.

0.31* 1.0 2.0 3.0

~

Asaect Surfxe Suterfme $sfue Swtsurfwe Surfue $4surfme Swfue Suesurface Aabo,' Indication, Irecauen8d Indation, Ireuuon 8' lasimon, frecauen8' in6scation, Irecaoon 84 e // e /t, % e /t, % e /t, % e /t, % e/t,% vit, % e tt, % ele, %

Presernce Euminauon 0.00 9.4 9.4 r SJ 8.SY 8.0 8.0f 7.6 7.6f 0.05 f.6 9 67 8.6 8.6 f 8.2 8.7Y '7.7 7.7Y 0.10 9.8 9 8Y 88 8.8Y 8.3 e.JY JJ FJr 0.15 9.e 9 9f L9 L9Y E4 L4f 7.9 7.9f 0.20 10.0 10.0f 9.1 9.lf 8.6 8.6Y S.1 S.1f -

'C.2 5 10.0 '10.0 f 9.2 9.2 f 0.7 8.7f 8.2 M.2f 0.30 10.0 10.0f 9.4 9.4 f 8.9 8.91 8.3 8.J f 0.3 10.0 10.0f 9.5 9.57 9.0 9.0 f 8.5 8.57 px 0.40 0.45 10.0 10.0 10.0 f 10.0Y 9.7 98 9.7 f 9.8 Y 9.1 9.3 9.?.T 9.3 Y 8.6 8.7 8.6f 8.7Y 0.50 10.0 10.0 f 10.0 10.0 f 9.4 9.e f 4.9 8.9f Inservice Esarninacon 0.00 11.7 11 77 10.6 10.'a f 10.0 ',0.0 f 9.5 9.Sf 0.0 $ 12.0 12.0 f 10.7 10.7 f 10.2 10.2 f 96 9 6f ,

0.10 12.2  ? 1.2 Y 11.0 11.0* 10.4 10.4 Y 9.7 9.7 Y 0.15 12.4 12.4r 11.1 *a l.1Y 10.5 10.SY 9.9 9.9 f 0.20 12.5 12.5 Y 11.4 11.4 f 10.7 10.7 Y 10.1 10.1Y 0.25 12.5 12.SY 11.5 11.57 10.9 10.9 f 10.2 10.2 f 0.30 12.$ 12.SY 11.7 11.7 f 11.1 11.1Y 10.4 10.4 f 0.35 12.5 12.3r 11.9 11.9 f 11.2 11.27 10.6 10.6f 0.40 12.5 12.57 12.1 12.17 11.4 11.4 f 10.7 10.7f 0.45 12.5 12.5Y 12.2 12.2 f 11.6 11.6Y 10.9 10.9f 0.50 12.5 12.SY 12.5 12.57 11.7 11.7 f 11.1 11.1r NOTES: .

(1) For intermediate flaw assect raues o // arvi thickriesa f, linear interpolation is permessabee.

t 3) e is ..*menal wall thickness of actual mail rucaness as setermined By U T eaarmnation.

l f 31 *(he total septh of a sAsurf ace ina.u' son es 2o.

l (4) Y = (3 It)/te it) = 3 /s. Lf f < 0.4, tre flaw insiution is classafeed as a surf ace indeucon. If f > 1.0, use f = 1.0.

l l

l l

l f: ,

! 0; o s, j .l. 85 l

1 Document tio. RT-ASME III/XI pa y . 4 (For Limerick only) 3. 1s p.g, u n[7 og?.16152 19 S ou rc a Side Penetrameter Film Side Penetrameter Source Source

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DotJBLE WALL RADIOGRAPHIC TECHNIQUES m

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. r 15 'e7 0 21615 2 Document No. RT-ASME III/XI Re v. 4 (For Limerick Only) Page 18 of 19

/~ Source Side Film Side Pe ne t rame t e r Pe ne t rame t e r piim sam

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Docuasnt tio. RT-ASME III/XI At is 87 0 21.615 2 Re v. 4 (For Limerick Only) Page 19 of 19 m

U BECHTEL NONDESTRUCTIVE EXAMINATION REPORT (RAOlOGR AP+41C INTERPR ETATION)

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