ML19345G611

Part 21 Rept Re Guyon Alloys,Inc Coupling Linear Indications,Initially Reported 800811.AE Is Conducting Investigation to Determine Extent of Problem & Acceptability of Reporting Criteria.Final Rept Expected by 810819

ML19345G611
Person / Time
Site:	Grand Gulf
Issue date:	03/25/1981
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-81-392-000 10CFR-50.55E, AECM-81-119, PT21-81-392, PT21-81-392-000, NUDOCS 8104070612
Download: ML19345G611 (4)

Text

.

- _ --- _ . _ _ _ _ __ __ m PART 21 IDBri!FICATib NO.92 -O o O CEPANfko."E - /A e S-

. m IE 0= t iir.x. Sk@

/

DnET ro. fo - WVw7 '

ORIGli@L ='J.m M,/ ~SLP?i.EENTARf DATE DISTRIBUiED I DISTRIBUTION:

7 REACTOR (R) / FLEL CYCLE & E '

SA EGARDS (S) ,

IEFILES PATERIAE @

IEFILES EES - h M -

IE FILES pyss AD/FR51 AD/RDI REG 10iG I,II,III,IV,V P2GIONS1,II,III,IV,V PEGIONS I,II,111,IV,V VSOJR BR. R-IV MdOJR BR. R-IV VB03R BR. R-IV

.LD3 / FFA FIG 5715 ISES / FD'S SS-395 gpyggt AE0D NB 7602 LCEE/FPA I;i;5 5715 ;p33 / gg gg_ggi Ct Mt mm 7zn N N.CD Me,_/9_02 LO3 / PPA M G 5725 G codVm fnne 7zn NRP/DSI iSLBP E/d 450 ACT NG 7602 RR?/ DST - Cd e d u m w ts 7r-SAD /SR fig-7210A ASLB?- E/W 450 -

NRP/DDL -

~

CENTPILFILES 016 (BfiRAL FILES 016 ASLB'D E/W 050' CEhTRol FILES ( DiRON) CENTRAL FilR (CHRCfD CSiiPALFILES 016 PDR CBfiPAL FILES SS-395 ENTRAL FILES (DiROFD LPDR PDR

~ . w i PDR TERA L DR e

• E . . 9fj~ fl )h i

, M '

APR[0 319.81 %

- ACTION:

~

". ~~"""Y M. '

4 .[

PRELIMItuRY EVALUATION OF TFE' ATTACHED REPORT ItOICATES LEAD

,FOLLOWJ? AS SI-OWN BELOW: -

IE

.. NRR MES CTd:R[

g3 s

T 810407odlR ,

F E 8 f.v./ E

I g'/ ~; po ed o - . .

) \CD h. o fW

! .I MISSISSIPPI POWER & LIGHT COMPANY b . Helping Build Mississippi P. O. B O X 16 4 0, J A C K S O N, MISSISSIPPI 3S205 JAMES P. McGAUG. f. JR.

• * * " " " " March 25, 1981 Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W.

Suite 3100 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Director

Dear Mr. O'Reilly:

SULJECT: Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/417 File 0260/15525/15526 PRD-80/49, Interim Report #3, Guyon Coupling Linear Indications AECM-81/119 On August 11, 1980, Mississippi Power & Light Company notified Mr. M.

Hunt, of your office, of a Potentially Reportable Deficiency (PRD) at the Grand Gulf Nuclear Station (GGNS) construction site. The deficiency concerns linear indications on couplings supplied by Guyon Alloys, Inc. for use in Nuclear Class I and II applications.

Our Architect / Engineer is conducting an investigation to ascertain the extent of the problem and to determine applicability of reportability criteria per 10CFR50.55(e) and 10CFR21.

Interim Report No. 3 is attached detailing the status of the deficiency to date. It is anticipated that a final report can be provided by Au;;n.st 19, 1981.

Yours truly, s

/

}

/

J. P. McGaughy, Jr.

FGM:st Attachment ec: See page 2 Member Middle South Utilities System

a

,, Mir51551PPI POWER & LIGHT COMPANY

.Mr. J. P. O'Reilly AECM-81/119 NRC Page 2-cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. Victor Stello, Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission ,

Washington, D.C. 20555 Mr. G. B. Taylor South Miss. Electric Power Associstion-

'P. O. Box 1589 Hattiesburg, MS'39401 r

I f

S l

5 'g 1

-P*',

m- a i

Attachment to AECM-81/119 Page I of 2 INTERIM REPORT NO. 3 TO PRD-80/49 I. Description of the Deficiercy Linear indications have been found in the f ace and along the body of four nuclear Class 2 and two nuclear Class 1, three-quarter inch (3/4")

couplings manufactured by Alloy Stainless Products Ccepany and supplied by Guyon Alloys, Inc. These couplings all have the same Heat Code Number and Mill Heat Number (Heat Code QE, Heat Number A17130) and are installed in the safety piping systems. It is known at this time that these couplings are installed in the Reactor Pressure Vessel Instrumentation Piping.

II. Resolution of the Deficiency The six couplings described in the " Description of the Deficiency" were determined to be in the sensing lines on the Reactor Pressure Vessel instrumenta*, ion piping. An investigation determined that loss of the sensing lines in which these six couplings were located would result in automatic shutdown of the reactor. However, MP&L has deter =ined that many other similar Guyon coaplings having the same hest number have been shipped to the GGNS site. The Constructor is presently in the process of locating these couplings and performing a non-destructive examination p

of them.

III. Status of Proposed Resolution An investigation is presently underway to deter =ine the full extent of the problem. .To date, a total of 540 QE couplings have been received at Grand Gulf. Of this total,-298 have been-located and documented. Of the 242 remaining, 161 have been located and are awaiting evaluation.

Further investigation is underway to locate the 81' fittings not .yet

-accounted for.

Examination of 171 fittings in stock and 121 fittings installed in Q lines revealed 20 (19. in. stock and l ~ installed) of the f,ittings (Class

2) possessed indications similar to the described condition.

Our Constructor has performed a walkdown. investigation and has B21, identified couplings with subject Heat ~ Codes QE in six systems:

B33, E31, E61, G33 and P44.

The Constructor's Nonconformance Report (NCR) 4966, the subject of:

-Quality Action Request (QAR) F-208, identified 2-Class 1 and four Class 2 couplings.having linear indications.- Class 2 couplings with linear indications were sent to our Architect / Engineer's San Francisco office On the

.and the' linear indications verified'and "cause" determined.

f i

Attachment to AECM-81/119 l Page 2 of C l

basis of this evaluation of "cause", the constructor reports that the steel-making process, extruding / forming process or machining is

,er1tionof,j L P determined to be adequate for Class 2 couplings. Class 1 couplings, when fully identified, will be liquid penetrant tested to determine Zrindica]ti acct.ptability, in that non-destructive examination has not been ynuclearg performed on these items to date.

{ ling: manu my n Alloy' Reportability per 100FR50.55(e) cannet be determined until all safety-

r 2nd M12 related fittings are tested by Nondestructive Examination to deter =ine 91kd in t' acceptability. Reportability per 10CFR21 is presently under jcoupling' investigation by the supplier.

-urentette I IV. Reason For Delay in Final Report This deficiency is currently under investigation by the constructor.

,x coup 11 Jnid to ! V. Pro jected Concletion Date

.:ce n ta tic 8 linM ' It is anticipated that a final report can be provided by August 19, tic chut 1981.

ther gig d to the

-ting tt

. .o stigati

Icn.

.lf. (

r^mair Snv;/;t d for.

.on of

ale <

acd f fuct(

3 c't E61, .

ucci

ior

hr

, w.

__I I