ML19330C034

Deficiency Rept Re Erroneous Output Readings in Rosemount, Inc Model 1151A Pressure Transmitters.Transmitter Deficiency Could Adversely Affect Sys Operation & May Result in Improper Action.Corrective Action Forthcoming

ML19330C034
Person / Time
Site:	Grand Gulf
Issue date:	04/24/1980
From:	Julie Ward BECHTEL GROUP, INC.
To:
Shared Package
ML19330C025	List: ML19330C024 ML19330C029 ML19330C034
References
NUDOCS 8008070445
Download: ML19330C034 (3)

Text

t

,o .

U Bechtel Power Corporation Engineers-Constructors 15740 Shady Grove Road -

Gaithersburg, Maryland 20760 301-M8 2700 April 24, 1980 Of fice of Inspection & Enforce =en MHCEIVED U.S. Nuclear Regula:orv Co=::lission Region Il APR 3 0 80 101 Marietta Street, N. W. OCN5 pc.M. t Suite 3100 a p e cg Atlanta, Georgia 30303 Attention: Mr. J . ?. O'Reilly , Director

Dear Mr. O' Reilly:

Nuclear OA Is Aeplicable Middle South Energy, Inc.

Grand Gulf Nuclear Station Bechtel Job No. 9645 File: 0260/0512 10CFR-Part 21 Repor: ability On April 24, 1980, Bechtel Power Corporation, the Grand Gulf Project , verbally notified Mr. Floyd Cantr ell of your Of fice of a 10CFR Part 21 deficiency at the Grand Gulf Nuclear Station Construction site.

The deficiency concerns Rose =ount Model ll51A Pressure Trans=1::ers with a characteristic that the ou:put may read within nor=al range when the input is under- or over-ranged.

We are currently investigating this matter and will report our findings to you within 90 days (July 23, 1980). Details are described in the attached 10CFR Part 21 Report.

Very truly yours ,

Urd -

Project Manager '

LS/mb i

/

O 3 Enclosute: 10CFR Part 21 Report DRN J-60/01 i bec 41: i. ?. McGauf.y, Jr., w/1 Dr. D. C. Gibbs, v/1 g. M 3 L. i. Dale, w/2 J . N . '.,*ard , v/ o M C. ".. McCoy, v/1 R. A. C'Neil, v/l W. L. Nail, w/1 L. E. Ruhland, v/l

. Mf E. Reaves, w/1 D. M. Lake, a/l A. 2accaria, v/1 R. E. 3revn, v/l J. M. Kc as . *-/1 R. L. Ste::, v/l E. K. Kanga, VII 8008070W6

i

f 10CFR PART 21 REPORT

.o TO NUCLEAR REGULATORY COMMISSION REGION II-ATLANTA, GA.

BECHTEL POWER CORPORATION DEFICIENCY REPORT NUMBER J-80/01 Name and Address of Individual (s) Infor=ing the Co:nission Mr. J. N. Ward Bechtel Power Corporation 15740 Shady Grove Road Gaithersburg, Md. 207o0 Identification of Facility Grand Gulf Nuclear Power Plant, Units 1 and 2 Port Gibson, Mississippi, 39150 Identification o' 3asic Co:conent Rosemount Model 1151A Pressure Trans=itter per Bechtel Purchase Order 9645-J-301.0A and Specification 9645-J-301.0.

Nature of Deficiency or Failure Rosemount Model 1151A Transmitters , incorporating "A" electronics , are specified to have a linear output of 4 to 20 MA throughout the calib-rated range. ,Rosemount has observed, in a limited nu=ber of transmitters, that when over-ranged at 1407. of the instruments upper calibrated limit, the ou:put current will fall below 20MA. Si=ilarly, if the trans f::ers under-ranged cet - tion exceeds 1907. of the calibrated span, the tr'ans=itter cutpui may be greater than 4 MA.

An evaluation of these transmitters in a safety related system has shown that the deficiency in a transmitter would adversely affect the operation of the system and provide erroneous information which

=ay cause an operator to take i= proper action.

The Date on which Infor=ation of Deficiency was Obtained The date on which inf ormation of deficiency was obtained was April 1,1980.

A detailed review was concluded on April 22, 1980, which determined that received componen:s are, in fact, utilized in safety related systems.

The Number and Locations of all Basic Comoonents which Contain Oeficiency The number and locations are unknown a: this tine , however , the f ollowing action has been initiated:

All Control Sys te: Chief Engineer's of fices within the 3echtel ?:ver Corporation were advised of :he potential probles with :he Rasamoun: 1131A Trans:itter by a "Problen Aler " c:nnunication, Nu=ber 80.03A dated April 17, 1990, which was issued f ros the Gaithersburg Oivision Con:rol Sys:e:s Chief Engineer's of fice.

't *

]g

• gr-10CFR Part 21 Report Page 2 of 2 Since that ti=e, all Bechtel Power Corporation associated Nuclear Power Plant projects have been contacted by telephone and advised verbally of the Rosemount Model 1151A deficiency and probles and were asked to deter =ine if any Rose =ount ll51A transmitters were in safety related service in their respective plants.

In addition to Grand Gulf Nuclear Station, responses indicating applica-tions of the subject Rosecount 1151A Transrteters in functions where the deficiency eculd adversely af fect safety, have been received f ros:

1) Susquehanna Stea: Electric Stations 1 and 2 Berwick, Pennsylvania 18603 Owne r:

Pennsylvania Power and Light Co.

2 North 9th Street Allentown, Pennsylvania 18101

2) Limerick Nuclear Generating Stations 1 and 2 Pottsdown, Pennsylvania 19464 Owner: .

Philadelphia Electric Company 2301 Market Street Philadelphia, Pennsylvania 19101 The Corrective Action which has been Taken er will be Taken The corrective action is unknown at the time of this letter.

Bechtel Power Corporation -ill be responsible for the corrective actions to be taken for all plants in their control.

Advice Related to the Deficienev $

.. 6 The advice given to the Licensee's is as given above where the nature of the deficiency and the potential hazard is explained.

l i

. ,