Part 21 Report - 1996-080
ACCESSION #: 9601190411
December 4, 1995
Re: Notification under 10 CFR Part 21 on Model 1154 Series H Sealed
Reference Gage Transmitter, Range Code 9, Ambient Temperature Effect
Specification
Pursuant to 10CFR21 Paragraph 21.21(b), Rosemount Nuclear Instruments,
Inc. (RNII) is writing to inform you that the Model 1154 Series H Sealed
Reference Gage Transmitter, Range Code 9 does not meet one of the
published ambient temperature effect specifications within two-sigma to a
95% confidence interval for all possible calibration ranges, (reference-
RNII specification drawing 01154-2010 Rev. G, RNII Product Data Sheet;
PDS4631 and RNII Instruction Manual; MAN4631). The Model 1154 Series H
Sealed Reference Gage Transmitter is offered in Range Code 9 (Calibration
Range 0-500 to 0-3000 psig) only. The Model is identified as 1154SH9.
RNII has two published ambient temperature effect specifications
applicable to all Model 1154 Series H transmitters. Both specifications
are two sigma to a 95% confidence interval for the population of all 1154
Series H transmitters. The specifications are:
A. "+/- (0.15% upper range limit + 0.35% Span) per 50 degrees F
(27.8 degrees C) ambient temperature change between 40 degrees F
(4.4 degrees C) and 130 degrees F (54.4 degrees C)."
B. "+/- (0.75% upper range limit + 0.50% Span) per 100 degrees F
(55.6 degrees C) ambient temperature change between 40 degrees F
(4.4 degrees C) and 200 degrees F (93.3 degrees C)."
RNII analysis has concluded that the Model 1154SH9 transmitter does not
meet the 'A' ambient temperature effect specification for 50 degrees F
(27.8 degrees C) changes for all possible calibrated ranges other than
the standard calibration of 0 to 3000 psig. The Model 1154SH9
transmitter does meet the 'B' ambient temperature effect specification
for all possible calibrated ranges.
10CFR21 Notification
Model 1154SH9 Ambient Temperature Specification
December 4, 1995
Page 2 of 5
1.0 Name and address of the individual providing the information:
Mr. Mark Van Sloun
Vice President & General Manager
Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
Eden Prairie, MN 55344
2.0 Identification of items supplied:
Only RNII Model 1154SH9 Sealed Reference Gage Pressure Transmitters
using temperature effect specification 'A' which:
2.1 Are calibrated to a calibration range other than 0-3000 psig,
or
2.2 Have changed an Amplifier Circuit Board (P/N's 01154-0001-0001,
01154-0045-0001, 01154-0021-0002 or 01154-0042-0001) where the
transmitter was not re-tested to verify that ambient
temperature effect specification 'A' was met.
Model number 1154SH9 transmitters calibrated 0-3000 psig with
original electronic packages are not affected by this notification.
3.0 Identification of firm supplying the item:
Rosemount Nuclear Instruments, Inc. (successor to Rosemount, Inc.)
12001 Technology Drive
Eden Prairie, MN 55344
10CFR21 Notification
Model 1154SH9 Ambient Temperature Specification
December 4, 1995
Page 3 of 5
4.0 Nature of the failure and potential safety hazard:
This notification is issued to inform all users of Model 1154SH9
transmitters who are utilizing the ambient temperature effect
specification for 50 degrees F (27.8 degrees C) changes between the
ambient temperature range of 40 degrees F (4.4 degrees C) to 130
degrees F (54.4 degrees C) (identified as specification 'A') that
the transmitter will not meet this specification within two-sigma to
a 95% confidence interval if:
4.1 Calibrated range is other than 0-3000 psig, or
4.2 Amplifier Circuit Board has been changed since original
shipment and not tested to the temperature effect
specification.
Only the model 1154SH9 transmitter is affected by this notification.
RNII has analyzed the performance of Model 1154 Series H
Differential Pressure Range Code 4 through 8 transmitters and have
concluded these units meet all published ambient temperature effect
specifications within two sigma to a 95% confidence interval for all
possible calibrated ranges. (reference: RNII specification drawing
01154-2010 Rev. G, RNII Product Data Sheet; PDS4631 and RNII
Instruction Manual; MAN4631).
RNII does not have sufficient information to determine the safety
impact related to plant applications. Licensees must determine the
impact on plant operations and plant safety and take action as
deemed necessary.
10CFR21 Notification
Model 1154SH9 Ambient Temperature Specification
December 4, 1995
Page 4 of 5
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:
5.1 RNII has revised the 1154SH9 two sigma 50 degrees F (27.8
degrees C) ambient temperature effect specification for all
possible calibrated ranges, over the ambient temperature change
between 40 degrees F (4.4 degrees C) and 130 degrees F (54.4
degrees C) as follows:
Model 1154SH9 transmitters ambient temperature effect
specification for all calibrated ranges other then 0-3000 psig:
"+/- (0.25% upper range limit + 0.50% Span) per 50 degrees F
(27.8 degrees C) ambient temperature change between 40 degrees
F (4.4 degrees C) and 130 degrees F (54.4 degrees C)."
5.2 RNII has revised its Maintenance Recommendation:
Interchanging Amplifier Circuit Boards is not recommended, if
using the ambient temperature effect specification identified
as 'A'
5.3 RNII will update PDS PDS4631, Instruction Manual MAN4631 and
RNII specification drawing 01154-2010 within 90 days of this
notification. A copy of the revised instruction manual will be
mailed to you at this time. The revised specifications will be
published as follows:
Range Code 4 through 8
"+/- (0.15% upper range limit + 0.35% Span) per 50 degrees F
(27.8 degrees C) ambient temperature change between 40 degrees
F (4.4 degrees C) and 130 degrees F (54.4 degrees C)."
Range Code 9
"+/- (0.25% upper range limit + 0.50% Span) per 50 degrees F
(27.8 degrees C) ambient temperature change between 40 degrees
F (4.4 degrees C) and 130 degrees F (54.4 degrees C)."
All Range Code 4 through 9
"+/- (0.75% upper range limit + 0.50% Span) per 100 degrees F
(55.6 degrees C) ambient temperature range between 40 degrees F
(4.4 degrees C) and 200 degrees F (93.3 degrees C)."
Mr. Van Sloun is responsible for any further action related to this
issue.
10CFR21 Notification
Model 1154SH9 Ambient Temperature Specification
December 4, 1995
Page 5 of 5
6.0 Any advice related to the potential failure of the item:
RNII does not have sufficient information to determine the safety
impact related to plant applications. Licensees must determine the
impact on plant operations and plant safety and take action as
deemed necessary.
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. The Nuclear
Regulatory Commission has been advised of this notification. We are
sorry for any inconvenience. If there are any questions, or you require
additional information related to this issue, please contact Tim Layer
(612) 828-8240 or Jane Sandstrom and Ian Baldry (612) 828-8250.
Sincerely,
ROSEMOUNT NUCLEAR INSTRUMENTS, INC.
M. L. Van Sloun
Vice President & General Manager
MVS:TJL
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