ML19290C385
| ML19290C385 | |
| Person / Time | |
|---|---|
| Issue date: | 06/20/1979 |
| From: | Angelo J Office of Nuclear Reactor Regulation |
| To: | Aycock M Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-17, REF-GTECI-SY, TASK-A-17, TASK-OR NUDOCS 8001110100 | |
| Download: ML19290C385 (2) | |
Text
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- l JUN 2 01979 Generic Task No. A-17 NOTE T0:
M. Aycock FROM:
J. Angelo
SUBJECT:
INFORMATION REGARDING GENERIC ISSUES In accordance with the memorandum from S. H. Hanauer dated June 15, 1979, the following infonnation is provided to you regarding Generic Task A-17, Systems Interaction in Nuclear Power Plants:
1.
I am not aware of any industry studies currently underway or planned on this subject that are related to systems interaction.
My contacts with represen-tatives of the Atomic Industrial Forum, Inc. indicate to me that no special effort has been initiated in response to our suggestions to the AIF that industry should take some initiative.
Some members of the AIF have given us statements of what they do during the normal course of design to account for systems interaction. Generally, it is our opinoin that while these design procedures go a long way toward preventing interactions, the analysis do not specifically address the issues. A study called " Systems Interaction Study" was conducted for Commonwealth Edison Company on the Zion Station.
This study was completed in June 1978 and was presented to the ACRS.
The study was concerned with use of Licensee Event Reports, with the results of the study applied to the Zion Station. We used this study at Sandia Labora-tories for the purpose of identifying interactive characteristics of nuclear power plant equipment. Thus, the only study that I am aware of was used by us in this Task A-17.
2.
No consultants have been used on this task.
However, the ACRS consultants have made considerable and significant comments on the scope of the task and on our method of doing the work by the use of fault trees.
For a very limited time and in a limited way, John Anderson of ORNL was working on a separate task on interactions between control systems and protection systems.
This work was to have been continued by ORNL for DOR for about $50,000. The work has not been funded, however, and has essentially been dropped.
3.
There are a number of NRC research programs that are related to Task A-17.
These programs are:
a.
Reactor Safety Study Methodology Applications Program This program is being conducted by RES at Sandia.
Some knowledge gained from this program by Sandia personnel is useful to Task A-17 be virtue of the fact that the Sandia personnel can transfer this knowledge directly to Task A-17 and thus have saved some amount of time in performing Task A-17.
1732 284 8 0 01110 lco
i JUN 2 01979
_2 b.
Integrated Safeguard Systems Study This program, also being conducted at Sandia, uses the fault tree methods.
Some of the peripheral knowledge " rubs off" for use of Task A-17.
c.
Value Impact Study of Regulatory Review Unit This program at Sandia under the direction of RES will explore the impact of the revie requirements and the technical specifications. Many elements of the program have direct impact and are related to the SRP review for Task A-17.
4.
a.
Technical Assistance funding that has been expended or will be expended by the contractor, Sandia Laboratories is:
FY 1978 69,000 FY 1979
$390,000 b.
Additional funds needed for FY 1979 have already been conmitted and action taken to make the funds ($39,000) available to Sandia. This amount is included in the figure of $390,000 shown in item 4a.
c.
Additional funds needed in FY 1980 to complete Phase I of Task A-17 are
$78,600.
Phase II of Task A-17 was originally estimated to require
$200,000 in FY 1980 funds. While I have made no effort to reestimate Phase II, I believe that we should consider certain contingency funding and increase this Phase II effort to more like $350,000.
Phase II effort is defined in our original Task Action Plan but we will very likely have to carry on some additional Phase I kind of work in FY 1980 over and above the $78,000 now estimated to complete Phase I.
C.
O g
John Angelo, Task M nager Generic Task No. A-17 cc:
S. H. Hanauer G. Edison M. Taylor J. Murphy J. Norberg 1732 28,_3
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