ML19305A480
| ML19305A480 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/10/1979 |
| From: | Hanauer S Office of Nuclear Reactor Regulation |
| To: | Rosa F, Satterfield R, Tondi D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19305A478 | List: |
| References | |
| NUDOCS 7907260453 | |
| Download: ML19305A480 (2) | |
Text
'M 50, yaRtoq*4 UNITED STATES
[h
't NUCLEAR REGULATORY COMMisslON Mf) '
WASHINGTON, 0. C. 20555 2 'y t 4/ f
- .< ~ / '
APR 101979 NOTE T0:
R. Satterfield F. Rosa D. Tondi D. Sullivan FRCM:
S. H. Hanauer
SUBJECT:
CLASS 2E EQUIPMENT
REFERENCE:
WENZINGER IAEA REPORT-MEMO DATED APRIL 4, 1979 Here, in IAEA-SG-08 is the germ of some " Class 2E" principles and requirements. What do you think of drafting a BTP with the right excerpts from 08 in it?
y/
I
.a S.,H. Hanauer, Assistant Director
' /for Plant Systems D Division of Systems Safety Enclosurs:
Wenzinger Mer.o cc:
E. Wenzinger 79072604s3
IAEA Distribution 5
g 4
(3) Considerable time was spent discussing interfaces with 08.
It was agreed that this area is still somewhat grey.
Where there was some doubt whether some item was appropriate for 03 or 08, such as protection system status monitors, it was agreed to leave the material in 03.
Although I argued for a considerable time to require testing as the principal requirement for equipment qualification, the TRC did not accept my proposal.
(Note this was an oral proposal - had been inadvertently left out of our formal comments.) The text now allows any one (alone) or any combination of t*e following, (1) type test on equipment representative of that to be sup,,11ed, (2) actual test on supplied equipment, (3) application of perti-nent past experience in similar applications, and (4) analysis supported by justification.
These,.;rovisions will not, I believe, endanger the commer-cial interests of U.S. manufacturers becruse acuipment less qualified than demanded in the U.S. can always be found.
However, I believe that the IAEA will be doing the developing nations, is'ag this guide, a disservice on this point. Testing under at least sir, isted accident conditions should be required. We don't have much exper ance with equipment in a real accident, and analysis alone isn't enough.
This latter point (qualification testing) needs to be brought up in the SAG meeting when 03 is considered for final approval.
Assistance from knowledgeable NRC staff members in preparing a formal U.S. position on qualification testing is needed.
As a multiplicity of individual apparently minor changes were agreed to, it will be necessary to review the final TRC version of 13 to determine if the flavor and direction of the text as revised are still acceptable.
I will do this when the clean typed version is received.
SG-011
" Selected Design Safety princioles
See "Summarfa' above, I believe that there are other subjects which should be addressed in a new Design Guide before the TRC attempts to expand, in greater detail, on topics already covered in the CoJe and/or a guide already being worked on.
/
, / / NfS '
E. C. Wenzings'r Alternate U.'$.
presentative, IAEA TRC/ Design ec:
IAEA Distribution G. Lainas G. A. Arlotto D. Tondi 0.F.Sulliva@n E. Butcher U.
H.
Hanaue T2. >
R. Satterfield T. A.
Apposito DSj R. Scholl c
.