ML20083H571
| ML20083H571 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 01/03/1984 |
| From: | Eddleman W EDDLEMAN, W. |
| To: | Atomic Safety and Licensing Board Panel |
| Shared Package | |
| ML20083H553 | List: |
| References | |
| 82-468-01-OL, 82-468-1-OL, ISSUANCES-OL, NUDOCS 8401090346 | |
| Download: ML20083H571 (2) | |
Text
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UNITED STATES OF AMERICA Jan 3, 1984 NUCLEAR REGULATORY COMMISSION
.n i
BEFORE THE ATOMIC SAFETY AND LICENSING BOARD Glenn O. Bright Dr. James H. Carpenter James L. Kelley, Chairman In,.the Matter of J
Docket 50 400 OL CAROLINA POWER AND LIGHT CO. et al.
)
(Shearon Harris Nuclear Power Plant,
)
Units i and 2)
)
ASLBP No. 82-L68-01
)
OL Wells Eddleman's new contentions re SPDS
Background:
On December 3,1983 I received CV&L's " Safety Analysis of the Shearon Harris Safety Parameter Display System"(SPDS).
I do not
'take it to be the information the Board ordered CP&L to produce by mid-February on SPDS human factors.
But it is new informat$on.
For the first time I have some descriptive data on the SPDS that enables Therefore, under the Board's order that such new info evaluation.
i compiels contentions to be filed within 30 days of having the document in hand, I now (taking into account Jan 2 was a holiday) file:
Contention 169:
The Harris SPDS design. fails to adeouately provide information needed for operating personnel to protect the health and safety of the nublic in an accident, because (A) the og SPDS logic does not indicate loss of quality signals for paraneters
+
.noo
{'
until all signals are lost, and uses "1 out of 2 logic" (how can you O
mg logically tell which one to use?) when only 2 signals are left, thus 4
not providing accurate information or early indication that instruments
- 00 oO or signal lines may be failing.
It also uses average values only, om
.3@e. failing to alert operators to possible widely divergent readings of the same variable.
See p.25 of " Safety Analysis" of sons,
~2-
& safety on:alysis Contention 170:
The Harris SPDS design is defective because it does not take sufficient account of overcooling, which can cause
. pipes to break in the nrimary cooling system (and could lead to prsssure vessel failure).
PAge-29-of the SPDS " Safety Analysis" indicates the core cooling will remain GREEN (OK) on the display even tho-cocling exceeds 100 degrees F per hour (the pressure
\\
vessel code limit)..This could lead to urimary systen broundary failure s
'followed by rele,ase of radiation to atmosnhere, e.g. by venting, bad seals.
s Contention 171:
The Harris SPDS design and safety analysis is defective because in the event of a large LOCA it does not provide
~
accurate information to operators.
For exannle, nage h5 of the SPDS " safety analysis" says that the RCS Integrity signal during a "'large LOCA" will be GREEN (OK).
In fact, a large LOCA is a huge leak in the reactor, cooling system -- not " integrity" at all.
It also assumes the control rods will be insertable after the LOCA begins (p.45), ignoring possible warning, stean explosions, or CRDM (or CRDM controls or per er supply) failures.
w Contention 172:
Due to dropped information signals not being signaled to the operators, and due to inaccurate setups,
^
e.g.
the failure of RCS integrity to signal other than OK during a large LOCA (SPDS " Safety Analys s" p.45), failure to take account
^ ~
of overcooling (p.29), and variation of signals, the setup for prioritizing onerator apetions (pp 26-27) may actually confuse operators or misdirect their attention during a nuclea* accident.
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The selected parameters hava not been fleshed out for Harris (e.g. overcooling, ibid pp1h-16) and may provide actual nisinfo"mation during an accident if set wrongly,'=e.g. for overcooling.
WHAT'S NEW :
SPDS Safety Analysis and description therein of how it's planned towork.
WHY COULDN'T FILE EARLIER: Basis in the
" Safety Analysis" cited above was not availnble.
5 factors:
Good cause, 6oAP&
- I have technical nal ility n do cross & may get witnesses.
info not available earlfer.ysis akfier Odrffes pursuing No o SPDS issue.
p 5
No real delay, safety hearing discovery only beginning now.
Broaden issues 4_
not much, SPDS always been issue. No contentions no record.%5 4 Nd rmrd, ]