ML17138B308

Ack Receipt of Forwarding Final Deficiency Rept Re Itt General Controls Hydramotor Actuator Springs.Rept Will Be Reviewed & Evaluated

ML17138B308
Person / Time
Site:	Susquehanna
Issue date:	04/16/1980
From:	Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
References
NUDOCS 8005190594
Download: ML17138B308 (9)

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Docket Nos. 50-387 50-388 UNITEDSTATES NUCLEAR REGULATORYCOMMISSION REGION I 631 PARK AVENUE KING OF PRUSSIA, PENNSYLVANIA19406

~gg~pC4U' 005 1905~ q Pennsylvania Power 8 Light Company ATTN:

Mr. Norman W. Curtis Yice President Engineering and Construction (N-4) 2 North Ninth Street Allentown, Pennsylvania 18101 Gentlemen:

Subject:

Report of a Deficiency on tTT Hydramotor Actuator Springs (Your letter of March 28, 1980)

Thank you for your letter, referenced

above, which forwarded a final report pursuant to 10 CFR 50.55(e) regarding the subject matter.

Your report will be reviewed and evaluated,.

and should we require additional information concerning this matter, we will contact you.

Your cooperation with us is appreciated.

Sincerely, Robert T. Garison, Chief

.Reactor Construction and Engineering Support Branch CC:

A. R. Sabol,

Manager, Nuclear guality Assurance W.

E., Barberich, Licensing Engineer S.

H. Cantone, Superintendent of Plant

TWO NORTH NINTH STREET, ALLENTOWN, PA.

18 IOI PHONE:

(21S) 821 SIS1 NORMAN W. CURTIS Vice President-Engineering 8, Construction 821-$ 38l March. 28, 198Q Mr. Boyce H. Gxier Director, Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 SUSQUEHANNA STEAM ELECTRIC STATXON FINAL REPORT OF A DEFICIENCY ON ITT HYDRAMOTOR ACTUATOR SPRINGS ERs. 100450/100508 FILE 840-4 PLA-464'60-M33 6A

Dear Mr Grier:

This letter confirms a. report made by telephone to NRC" Inspector Mr. R. Gallo on. January 24, 1980..

In that discussion, Mr. Gallo was advised that the above subject condition was under evaluation for reportability under the provisions for: 10CFR50.55(e).

The condition was repox'ted t:o the Commission under the px'ovisions of 10CFR21 by ITT General Contzolsr. GlendalePCA in their letter dated'. December 7, 1979 (Attachment 1)..

The deficiency relates to "Q" listed dampers supplied by American Warming and Ventila~q Inc.

(AWV) and involves

a. spring, ITT part No.. 17443A, used in ZTT'H91p'2 93 94 r 95r 96 and 98 Milliampere 'Hydramotor Actuators..

The springs were discovered to be manufactured from incorrect material and will, upon being actuated through greater than a three (3) inch stroke take a permanent set.,

This deformation x'esults in a decreased force output of between 40 and 160 pounds-for varying positions of spring compx'ession.

Bechtel Corporation has evaluated the actuators provided under-Purchase Order.

8856-M-336AC for, the Susquehanna Steam Electric Station for repoz~ility under provisions of 10CFR50.55(e).

These actuators are essential devices to support the HVAC system duzing'OCA and normal plant operation In particular, Bechtel has specifically analyzed actuators tagged HDM07831A and HDM07831B for safety implications..

These actuators are supporting the control room HVAC systems and are. located on the "A" and "B" fan discharge.

When "A" fan is in operation, "B"'an is in stand-by.

Zf HDM07831B fails to close, "A"

fan supply aiz will short circuit thru "B" fan and less air will be delivered to the control room.

The control room will then lose pressurization.

PENNSYLVANIA POWER 8

LIGHT COMPANY

March, 28, 1980 Other actuators also identified in the Purchase Order perform essential functionsg however, their failure would be less significant than the failure

. of the two mentioned above.

PPGL and'echtel have therefore concluded that. this deficiency, were it, to have remained uncorrected, could have affected adversely the safety of operations of the Suscyehanna Nuclear Power Plant at any time throughout the expected lifetime of the plant.

The deficiency represents a significant deviation from performance specifications which will recpxire extensive repair to establish the adecpacy-of the HVAC system to meet the'riteria and bases stated in the safety analysis report.

I'll affected dampers have been identified and are presently being. controlled by Bechte1 Field Inspection Procedure G-3, "Processing of Nonconforming Items",

under NCR 5283 Final corrective action. for the. defective actuators will consist of either material. replacement as indicated in ITT's letter of December 6, 1979 to AWV (Attachment. 2) or through performance tests to establish their adecpxacy as mentioned in ITT's letter of December 7, 1979 to the NRC (Attachment 1).,

ITT's internal. corrective action for the condition is outlined in their letter to, AWV'Attachment 2).,

Since. the details of this report provide information relevant to the-reporting requirements of 10CFR21, this correspondence is considered to also discharge any formal responsibility PPsL may have for reporting in compliance thereto.

Very-truly yours-,

N.

W.. Curtis Vice President-Engineering 6 Construction ITT letter dated December 7, 1979 Attachment 2 ITT letter dated December 6,

1979 ARS:mcb cc:

Mr. Victor Stello (15)

Director-Office of Inspection s Enforcement U

S. Nuclear Regulatory Commission.

Washington, D.C.

20555 Mr. G'.. McDonald, Director (1)

Office of Management Information 6 Program Control U. S. Nuclear Regulatory. Commission Washington, D.C.

20555 Mr Robert. M. Gallo U. S. Nuclear Regulatory Commission PE O. Box 52 Shickshinny, Pennsylvania 18655

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~ tW GEO'Rf~L CQii i'l:QLS SQL tJ4n hveG.'~v'. iv. Al':. 9120l Telephone g/3) "42 613l December 7, 1979 t!CC'i) tp p P ~ tt'-l.':O

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Di".ectx, Office of Inspec:.io.". and "Enforcement:

U. S.. gucIear Regula io~'ommis.sior.

'fashington, D C. 2QSSS The attached notices have beeh sent to'the 13 purchas rs of certain of

-our NH model. Milliampere Hydramotor Actuators The a'ctuators referred to do not aualify as "basic components" since they are not used in the containment area..

Moreover, vre have riot received any notification of a. failure of an actuator, installed on a nuclear site, to perform its intended function.

Vc-bcHcve tha the aa ety.factors utili"cd by the u"ers of'thcs actuato;s is more than sufficient to alIovr for some reduction in the aciuatcr. fo>>ce output.,

Xn addition our best knov:ledge is that. the purchasers of the..e actuators assemble them to thew~

product and test them for performance adcc.uacy prior, to nuclear plant insta11ation.-

Ef they pass-this performance test,'ur best judgement'is that they vzQl continue to function Jn thc "arne manner Although v'o not believe this-to be a safety related defect, we are notifying the purchasers. because vre are not avrare of all thc appl! cation..

of these actuatoxs Sincerely R.:E. Qormella, Director Quality Assurance 6 Reliability BIZ:mms Attachment.

Q. A. DEPT.

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December 6, 1979-GENERAL CONTROLS 801 Nlan AveGfendale, Calif. 91201 Tele)bone (213) 542 6131 American %Farming 6 Ventilating Inc I310 Indian %food Circle Maumee, Ohio 4353?

'ttn.

Mr. Ray Alley Prom:

I'. C Gen. ral Controls Col. r,ll=-n, P.;=nue Glar;~bio-, Cal L~ornia 91ZQ1 Subject.

aJntification-of the exist. nce of a deicct pr pared in.

. ac"ordance v:i~!>,.a.rc.raptl 7.1.71 oa 10C"."R21, Federal Register, Vol iZ,, No, 1GO, itionday June 6, 19??.-

Rr.s "V,Trr:C A~-.'ui7:

Name, R., L Formelia Dieector, Quality Assur@<<lce 6 Reliab:lity Addr ss:,

ITT General Controls.

801 Allen Avenue Glendale, California 9lZ01.

~ 'DE'TTG'TCATIO"f OE'ON "ONL'ii)TS UFPTZZD:

'iaii"tampcrt U tdfL'timotcr.'<ctu'amor,. certain model"- oi NF94, 92, 93,, 94,,

9S, 9G and Q.i ror lVY~rCALiol.'i-'u'Vy.m:

VT'Gene".al Co~ trois SO I Aih'.n Avenue Qj gga -

Q>li..ornff3 9]20$.

2 1

CONTROLS AND fNDRVQE A$ OlVlQON ~ ttffERNA1tlfALTELEPHONE AND TELEGRAPH CORPORAf ION

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NATURC Or DrrECT:

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'One certain spring, part'number 1/443A, used in some NF/91> 92, 93, 94, 9S, 96 and 90 Mi11iampcre 15ydramotor Actuators has boon discovered to be manufactured from the i'ncorrect material.

It docs not possess the

.designed strength and will, upon actuation of a greater than 3" stroke, take a pormanont sot.

This results in a decreased force output of approximately 160e at all comprossed positions.

'%/hen these aforementioned actuators are sub)ected tn an electrical input control signal of zero, the actuator output does not develop the published force when the output shaft is moved to its fullposition..

-DATZ ON WmCZ ImpaMATIONOZ OZ~CC. r WAS OaTWINZb:

December 5, 1979

CORREC'1

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~nter'nal

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1 'lldofective springs and corrosponding actuators have been rejected and placed on hold.

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Allfuturo receipts of the spring, part nuriber 17443A,- willbe inspected to assure correct characteristics.

External Materials to correct >&is conQition are available upon notification that the published forces are required in. your application.

ADVICE:

Ifthe unit has. passed your initialtests and perform its intended function during its normal operation, our investigations support the conclusion that 4t wQl.continue to function in the same manner.because the spring will not exhibit any further loss-of force.,

ITT'GENERALCONTROLS' I; Porme11a, Directoe Quality.Assurance 6 Reliability