United States Nuclear Regulatory Commission - Protecting People and the Environment

General Information or Other Event Number: 39178
REP ORG: ROSEMOUNT NUCLEAR INSTRUMENTS, INC NOTIFICATION DATE: 09/09/2002
LICENSEE: ROSEMOUNT NUCLEAR INSTRUMENTS, INC NOTIFICATION TIME: 15:15[EDT]
CITY: EDEN PRAIRIE REGION: 3 EVENT DATE: 09/09/2002
COUNTY: STATE: MN EVENT TIME: [CDT]
LICENSE#: AGREEMENT: N LAST UPDATE DATE: 09/09/2002
DOCKET: PERSON ORGANIZATION
DAVID LEW R1
DAVID AYRES R2
CHRISTINE LIPA R3
NRC NOTIFIED BY: EMERSON PROCESS MGMT. JACK WHITTEN R4
HQ OPS OFFICER: GERRY WAIG TIM MCGINTY IRO
EMERGENCY CLASS: NON EMERGENCY VERN HODGE NRR
10 CFR SECTION:
CCCC 21.21 UNSPECIFIED PARAGRAPH

EVENT TEXT

NOTIFICATION UNDER 10 CFR PART 21 FOR MODEL 1153 DIFFERENTIAL PRESSURE TRANSMITTERS

The following is taken from a facsimile report sent by Emerson Process Management:

"Pursuant to 10 CFR Part 21, section 21.21(b), Rosemount Nuclear Instruments, Inc. (RNII) is writing to inform you that:

(a) certain Model 1153 differential pressure transmitters with model codes beginning with '1153D' or '1153H' shipped between March 2001 and August 2002, and

(b) spare sensor modules shipped between March 2001 and August t2002 with kit part numbers:

01153 0320 0232
01153 0320 0352
01153 0320 0252

"may not meet RNII's published temperature effect specification. Other Model 1152, 1153 and 1154 pressure transmitters are not affected. A list of affected Model 1153 pressure transmitters and spare sensor modules shipped to the end user's facility is provided in Attachment A.

"1.0 Name and address of the individual providing the information:

Mr. Jeffrey W. Schmitt
Vice President & General Manager
Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
Eden Prairie, MN 55344

"2.0 Identification of items supplied:

Certain Model 1153 differential pressure transmitters with model codes beginning with 1153D or 1153H shipped between March 2001 and August 2002
and;

"Spare sensor modules shipped between March 2001 and August 2002 with kit part numbers:

01153 0320 0232
01153 0320 0352
01153 0320 0252

"See Attachment A for complete listing of affected equipment shipped to the end user's facility.

"3.0 Identification of firm supplying the item:

Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
Eden Prairie, MN 55344

"4.0 Nature of the failure and potential safety hazard:

During the course of quality testing and data review, RNII has determined that certain Model 1153 differential pressure transmitters and spare sensor modules may not meet the published temperature effect specification. The temperature effect specification establishes an expected analog output error
interval during normal ambient temperature variations occurring between 40 [degrees] F (4.4 [degrees] C) and 200 [degrees] F (93.3 [degrees] C). While analysis is still ongoing, the root cause of the potential nonconformance has been narrowed to the effect of temperature changes on the transmitter
module.

Based on data review and analysis, RNII has established the following ambient temperature effect specification for transmitters affected by this notification. This specification supercedes the published temperature effect specification for all pressure transmitters affected by this notification.

All Range Codes: ? 3.0% of Upper Range Limit per 100 [degrees] F (55.6 [degrees] C)

RNII does not have sufficient information relative to each end user's specific applications to determine the potential safety related impact to each end users plant. Each end user must determine the impact on its plant operations and plant safety and take action as deemed necessary.

"5.0 The corrective action which is taken, the name of the individual or organization responsible for that action, and the length of time taken to complete that action:

(a) RNII has expanded its temperature effect test screen to include all model 1153 pressure transmitters to assure that all further shipments of model 1153 pressure transmitters meet RNII's published temperature effect specification.

(b) RNII has placed a hold on spare sensor module shipments.

(c) RNII has established a new temperature effect specification for pressure transmitters impacted by this notification as noted in Section 4.0.

(d) RNII will verify ambient temperature effect performance to the original specification on any returned Model 1153 differential pressure transmitter or sensor module affected by this notification and repair or replace if required.

(e) RNII will continue root cause analysis of the temperature effect potential non conformance. Action will be taken consistent with the findings of this analysis to assure conformance to RNII's published temperature effect specifications. Anticipated completion date: 1 November 2002.

(f) RNII will remove the hold on spare sensor modules when actions per 5.0

(e) are complete.

"6.0 Any advice related to the potential failure of the item:

The end user must determine the impact of this potential non conformance upon its plant's operation and safety and take action as deemed necessary. If the end user determines that return of a pressure transmitter or sensor module is required, RNII should be contacted to facilitate the return process.

Rosemount Nuclear Instruments, Inc. has a strong commitment to the nuclear industry and assures you that we are dedicated to the supply of high quality
products and services to our customers. We are sorry for any potential impact that this notification might cause. If there are any questions, or you require additional information related to this issue, please contact Mike Dougherty (952) 828 5626, Gerard Hanson (952) 828 3951, Bob Cleveland at (952) 828 8255, or Matt Doyle at (952) 828 3480."

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