Headquarters Daily Report
JULY 30, 2002
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REPORT NEGATIVE NO INPUT
ATTACHED INPUT RECEIVED RECEIVED
HEADQUARTERS X
REGION I X
REGION II X
REGION III X
REGION IV X
PRIORITY ATTENTION REQUIRED MORNING REPORT - HEADQUARTERS JULY 30, 2002
Licensee/Facility: Notification:
Part 21 Database MR Number: H-02-0057
Rotork Controls Date: 07/30/02
Subject: Part 21 - Potential for electric valve actuator control
switches to reset or fail to operate
Discussion:
VENDOR: Rotork Controls PT21 FILE NO: m2-15-0
DATE OF DOCUMENT: 06/10/02 ACCESSION NUMBER: ml021790313
SOURCE DOCUMENT: LETTER REVIEWER: RORP, D. Lanyi
Rotork Controls, a vendor of electric valve actuators, reported a
potential for distortion of add-on moulded components, causing control
switches to reset or fail to operate, in extreme circumstances. This
applies to Type NA1 electric valve actuators fitted with an Add-on-Pak 1
(AOP1) assembly, manufactured between 1978 and October 2001 and that have
a safety function and are used for end of travel indication. The
circumstances for this potential distortion are (1) that the actuator is
held in the fully open or closed condition and the AOP1 is set between
zero 3.5-7.5 percent of end of travel, depending on the gear ratio, and
(2) that the temperature of the AOP1 components is maintained above 80C
(176F) for more than 10 minutes.
Contact: D. Lanyi, NRR
301-415-1175
E-mail: drl@nrc.gov
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HEADQUARTERS MORNING REPORT PAGE 2 JULY 30, 2002
Licensee/Facility: Notification:
Part 21 Database MR Number: H-02-0058
Asco Date: 07/30/02
Subject: Part 21 - Excessive recycling of pump needed to maintain valve
actuator shaft in powered position during testing
Discussion:
VENDOR: ASCO PT21 FILE NO: m2-16-0
DATE OF DOCUMENT: 06/19/02 ACCESSION NUMBER: ml021830047
SOURCE DOCUMENT: LETTER REVIEWER: RORP, I. Jung
ASCO, a vendor of valve actuators, reported potential operational
difficulties with certain pumps supplied in pump kits and intended for
installation in NH95 Model B Hydramotor actuators. The vendor was
notified by Framatome ANP, the Clinton licensee, and the Palo Verde
licensee of excessive recycling of the pump, meaning actuation and
de-actuation of the pump to maintain the powered position of the actuator
shaft, during testing.
Contact: I. Jung, NRR
301-415-1837
E-mail: ixj@nrc.gov
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