ML20042B890

Interim Deficiency Rept Re Improper Design of Sensing Current Transformers for Overcurrent Protection,Initially Reported 820216.Next Rept Will Be Provided by 820415

ML20042B890
Person / Time
Site:	River Bend
Issue date:	03/18/1982
From:	Booker J GULF STATES UTILITIES CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, DEFE-820318, RBG-12316, NUDOCS 8203260246
Download: ML20042B890 (1)

Text

GULF STATES POST oFFtCE DOX 2951 UTILITIES COMPANY

• eEAUMoNT. TEXAS 77704 afs' AREA CODE 713 838 6631 March 18, 1982 RBG-12316 File Nos. G9.5, G9.2 91 -

Mr. John T. Collins, Regional Administrator U. S. Nuclear Regulatory Commission [tEi2pMO y Region IV, Office of Inspection and Enforcement Of j 611 Ryan Plaza Drive, Suite 1000 -

MAR P. 519825- -

Arlington, Texas 76011 {. g;,mp iyfu e,::, }

mu wvaat la

Dear Mr. Collins:

River Bend Station Unit 1 N G Docket No. 50-458 r

On February 16, 1982, Gulf States Utilities (GSU) informed Region IV of a deficiency potentially reportable under 10CFR50.55(e). GSU learned from our architect engineer, Stone & Webster, that during a review of the design of recirculation pump Class IE 4KV switchgear to Regulatory Guide 1.63 (to which GSU committed) it was discovered that the sensing current transformers for over current protection were not redundant, as required.

GSU committed to provide a Status Report of the investigation within 30 days. On March 16, 1982, Region IV was informed that the deficiency had been determined by GSU that day to meet the reporting  ;

requirements of 10CFR50.55(e). GSU will provide the information required by Paragraph 50.55(e)(3) by April 15, 1982.

Sincerely,

/ '

. E. Booker Manager-Engineering & Licensing River Bend Nuclear Group JEB/R K/kt cc: Director of Inspection and Enforcement U. S. Nuclear Regulatory Commission g' Washington, D. C. 20555 h wn 2 2882  !

{  % ,.

8203260246 820318 fI' PDR ADOCK 05000458 /

S PDR - b[\g