L-80-215, Forwards Response to IE Bulletin 80-08, Exam of Containment Liner Penetration Welds. Containment Boundary Butt Welds Identified.Field Welds Were Made During Const.Shop Welds Were Made by Penetration Assembly Fabricator

Forwards Response to IE Bulletin 80-08, Exam of Containment Liner Penetration Welds. Containment Boundary Butt Welds Identified.Field Welds Were Made During Const.Shop Welds Were Made by Penetration Assembly Fabricator

ML17208A851
Person / Time
Site:	Saint Lucie
Issue date:	07/08/1980
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-80-08, IEB-80-8, L-80-215, NUDOCS 8007250312
Download: ML17208A851 (14)

Text

P.O. BOX 529100, MIAMI,FL 33152 I I FLORIOA POWER & LIGHT COMPANY July 8, 1980 L-80-215 Mr. James P. O'Reilly, Director, Region II Office "of Inspection and Enforcement U.

S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100

Atlanta, Georgi a 30303

Dear fir. O'Reilly:

Re RI I:JPO 50-335 If Bulletin 80-8 A reply to the subject Bulletin is attached.

Very truly yours, Robert E. Uhrig Vice President Advanced Systems

& Technology REU/MAS/paf Attachment cc:

Director, Division of Reactor Construction Inspection Harold F. Reis, Esquire 80072503(2-PEOPLE... SERVING PEOPLE

ATTACHMENT Re:

RII JPO 50-335 IKE BULLETIN 80-08 EXAMINATION OF CONTAINii1ENT LINER PENETRATION MELDS The subject 18E Bulletin requested data on Non Destructive Examination (NDE) performed on full penetration butt welds made between containment penetration assemblies and the penetration

sleeve, and penetration assembly flued head to outer sleeve welds.

Figures 1 and 2, attached, illustrate the types of penetration assemblies utilitized at St. Lucie Unit ¹l.

Note that containment boundary butt welds have been identified on Figures 1 and 2, and consist of field welds made during construction and shop welds made by the penetration assembly fabricator, Tube Turns Division of Chemetron Corporation.

The date of issue of the Purchase Order with Tube Turns was June 30, 1971.

Fabrication of the penetration assemblies and shop welding was done in accordance with ASNE Section III, 1971 Edition.

The design specification for the assemblies and manufacturers and fabrication drawi ngs both required Radiography (RT) as the method for NDE in accordance with the code.

Tube Turns has been contacted and has assured that no exception was taken on any assembly to the RT examination requirements (see Tube Turns letter dated 6/2/80, attached).

The following and Table 1, attached, are our responses to the action items enumerated in'he subject Bulletin and are directed to the field welds only:

1.

Penetration assemblies affected are as listed in Table 1 and illustrated in Figures 1 and 2.

2a. Although issue of the Construction Permit allowed the use of ANSI B31.1, St. Lucie Unit ¹1 committed to compliance with ANSI B31.7, 1968 Edition with 1969 Winter Addenda for construction.

Acceptance standards for non-destructive examination (NDE) were in accordance with the draft ASHE Section III, 1968 Edition with 1969 Winter, Addenda.

2b.

Type of NDE performed as per attached Table l.

2c.

Type of weld joints and joint details as per attached Table l.

2d. Results of NDE as per attached Table l.

3.

Radiographic examination of full penetration circumferential butt welds in penetration assemblies which are part of the containment pressure boundary is required per, code.

However, when the joint detail does not permit radiographic examination such as on complex-designed mechanical penetrations, due to access limitations and/or geometric unsharpness factors, ultrasonic examination plus liquid penetrant or magnetic particulate examination may be used in lieu of radiography (reference ASNE Section III, NE 5211.1).

This option was exercised on approximately 50$

of the weld joints listed in Table 1, since ultrasonic examination is, by

code, an acceptable alternate to radiography for volumetric examination of open root type butt welds.

A major concern in using ultrasonic exami nation for open root butt welds is that if a backing ring is used during welding, it may distort the results of the examination in the root area.

The welds listed on the attached Table and all shop welding were done without the use of backing rings or bars except in the case of penetrations P-40, P-64, and P-33.

As part of the final repair welds to these penetrations in order to preclude additional weld-induced residual

stresses, backing strips were used for sections of the welds and the welds were accepted by ultrasonic examination.

The welds in Penetrations P-40

. and P-64 were examined by radiographic exami nation during a recent plant outage and were accepted.

Penetration P-33 is for the containment sump suction piping and is one of three Type IV penetration assemblies (see Figure 1).

The weld in question is located in the reactor auxiliary building pipe tunnel and would be extremely difficult to RT without disassembling the penetration.

Therefore it is impractical to RT P-33.

There is a high level of confidence in the integrity of the weld, however, based on the results of RT on P-40 and P-64.

The three penetrations were all assembled and inspected in accordance with the same codes and procedures during plant construction.

For these

reasons, we are convinced of the integrity of the weld and no radiographic examination has been scheduled for P-33.

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GUARD PIPE WELDED TO PENETRATION FIGURE 2:

TYPE II PENETRATIONS FOUR DESIGNS

Tube Turns Division cHEhtElRON CORPOAAnc'.V Box 32160. Louisville. Kentucky 40232 Telephone 502 774.6011 June 2,

1980 ECElVE JUAt 4 1980 KBCKO ENQIMEERi%

Ebasco Services Incorporated St. Lucie Plants 1 and 2

P. 0.

Box 1117 Jensen Beach, Florida 33457 Attention: T. A. Tarte, Project Engineer Tube Turns fabricated Containment Piping Penetration Assemblies for St. Lucie Plants 1 and 2 on Purchase Order HY-422564 from Ebasco Services Incorporated acting as age'nt.for Florida Power And Light.

For this contract, all butt welds joining the containment sleeve pipe to the multiple flued forging and all butt welds within the containment sleeve were subjected to 100% radiographic examination and found to be satisfactory to specification requirements.

Respectfully, S. D. Vitatoe Manager, Quality Assurance

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EXAHINATION OF COHTAINHENT PENETRATION MELDS TABLE 1 (CelZNUED) ciicciito oy otrt

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RUECTED OV UT 7 24-75 ~

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P 42 CONT*INN ENT SUHP PIIIP DISCNARCE FW 1 UP&4 3r50 I

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~

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~

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531

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CEK VRC RULLETIH 80-08 EKAttTNATttbt OF CONTAINNENT PENETRATION WELDS TASLE 1 (CONTINUED)

CHCCIECO OT DJTC

PEH, NO,

PEH, TYPE SERVICE MELD HO.

ESASCO MELD PROC, OiD.

(IN,)

THICK,:

RASE (IN )

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RING RT NDE PERPORHED NT VT RESULTS OF EFJttlNATITEt IV REACTOR DRAIN PetP SUCTION PM~2 ltP-76 WP 24 8,625 8,625 0.500 Oi500 INCOHEL

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ACCEPTED, PQ.5 bUTT MP 24, 8.625 0.500 CS Nh NA Nh ACCEPT ED, PM RCP RI.EEDOFF FM I MP 100 6.625 Oi432 CS ltA REJECTED tent UT 7 29 75 ~ REPAIRED A!iD ACCEPTLD Ott UT 8 24 75

'P 45 TNSTRVHFNT TUblttC PM~I WPi100 2i375 0,344 CS I

ltA REILCTEO TMlCE Ott LT FOR SVRt'ALE tOtOLIT REPAIRED AHD ACCEPTED tbt 'DllRD L

~

REFUELINO CAV, PURIP INLET FM 1 bUIT MP 68

6,625 0,432 CS TO SS

ACCEPTED, P-47 REFlJELINO CAV, PVRIF, OVILET FM-1 SUIT WP 72

~

5,563 0,625 INCONEL TO SS Nh

ACCEPTED, P-48 Et STRVNENT TV SIN 0 FW-I MP-100 6.625 0,719 CS

ACCEPTED,

~

P 49 SLOMDOtN FW-1 SUIT WP-100 6,625 Oi500 CS Nh REJECTED et IJT 7i29 7S, REPAIRED h!TD ACCEl'TED Ott 8T 9-15-7Si I

P 51 FHSTRUHCttT IUbING WP 24 6i625 0,500 NA Nh ACCE~ ~

P 52 I

I P-53 IHSIRVttENT TUSINC INSTR tbt EttT Tvblltc Flt-1 FM 1 WP 100'P 100 I

12.00 di625 Oi500 0,500 Nh Nh.

NA X

ltA ACCEPTED RFJECTED TPt VT 7-25 75 ~ REPAIRED AQ ACCEPTED CN UT 8 24-7S.

EBASCO SERVICES IHCDRPCRATED ca,a ~ aar FLORIDA POHER & LIOlT COHPANT

~aaofgor ST LUCIE UNIT NO 1 ~ BACKFIT op/ ato PIO S822 196 oy M

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PEN, NO,

PEN, TVPE SERVICE HELD NO.

EBASCO HELD PROC, O.D.

(>N.)

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'NRC BULLETIN 80 08'XAHINATIONOP COITAIIblENT PENETRATION HELDS THICK.

(IN,)

BACK, RING RT UT TABLE 1 (CONTINUED)

PERFORHED caascaaco oy oar+

RESULTS OF maLWTION P S6 HVAC CV 12/

FM-3 HP-24

'2,375 0 218 CS a

I NA ACCEPTED+

P-57 HVAC CV-2/

FQ 1 HP-24 2,375 0,218

. HA a

NA ACCEPTED P-SB CV 10/

FQ 1 WP 24 2,375 0,218

'CS Nh NA HA

ACCKPIED, P-64 SNVTDOHN COOLING FH-1' MP-100 a

a 24+00 I

I 1,00 CS '

a Nh, lEJECTED AND REPAIRED FOUR TIYES a; L ~

'aCCEPTED a FIYIll UI. FI!IAL PAMPA R INCLUDED USE OF PARTIAL BACKING P.I!'G

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