ML20056F804
| ML20056F804 | |
| Person / Time | |
|---|---|
| Issue date: | 08/11/1993 |
| From: | Correia R Office of Nuclear Reactor Regulation |
| To: | Zech G Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9308310122 | |
| Download: ML20056F804 (9) | |
Text
,
AUG 11 TYJ3 MEMORANDUM FOR: Gary G. Zech, Chief Performance and Quality Evaluation Branch Division of Reactor Inspection and Licensae Performance, NRR FROM:
Richard P. Correia, Chief Section B Performance and Quality Evaluation Branch Division of Reactor Inspection and Licensr.a Performance, NRR
SUBJECT:
PRESENTATION MATERIALS FOR THE OPERATIONAL REACTOR SAFETY ENGINEERING AND REVIEW GROUPS (OP,SERG) WORKSHOP The attached package contains the materials I will use during a presentation at the EPRI sponsored ORSERG workshop on September 17, 1993, in Balt.more, Maryland. The presentation materials will be used during a panel discussion on the maintenance rule' OMel S*#
Richard P. Correia, Chief Section B Performance and Quality Evaluation Branch Division of Reactor Inspection and Licensee Performance, NRR
Enclosure:
As stated E"M""
3!RC fill CEFriEF; COPY DRll R.F.
Central Files fr-21
)
/ jf, n
~;
WTRussell
( J v ed
'jt
^ ' ~
WKane
[f p/) c/,2 -h CERo.;si RZimmerma, f
RPEB Sect' n B staff g, e %
G A -
/
ll)p (L;> ipei OFC SEND NAME TO RPCorreia:jp itT-DATE PDR7 k / 1( /93
/
/93
/
/93
/
/93
/
/93 COPY 7 es No es !
No Yes No Yes No Yes No Yes No o g g Coer oo-n1 Non.: oesm.ma 9308310122 930811 i
PDR ORG NRRB q {
.il) 1
~
h c
)
n a
r 2
rB od nn t
nR n
oo i
o t s i
fi a s et c aE l
ia i
u h u gm n
a S
Cla o em o
vieRo e JR t c nE c
o c nrC T
e iy ao RnJp t
p y
cismtcr t
anr ao el S
io et i
u f
a nl r(
,Qr rRl oae o
a oe u
tPr g ied c a e in esh r na eleR ro ae ec t
nps Ce Rsur a
ao k
Pno cf c' nNe
.cf e
iu l
i t
a rt g
r i
ou d mnL an o o o
N r r id e r
a o in c s
r hf erE i
r vaf S c
\\
iei f
se GV RPD OU ep j
j, rot w
g, k o o a /
y
'/
i4j#
d P
o gYg$I4amf) i e
d J
e
$(w y.
ef i
A h av p!
g' s
m A
p4$g<"
73 e_
r Se 8
- h. 4 - ('
.T N
k 6
9N R
y' h ('4:
w i
ofh' yn-e
\\
/
ui
m_
am u
i l
I r
t J
D I (W
.O
.I O
9
\\
Z4[u_
4LLI C FO 2
t-
<2
~
o 3._.
V l
l i
y,
,+.
-- 7
I
~
BACKGROUND e
Maintenance rule 10 CFR 50.65 issued on July 10, 1991, to be effective July 10, 1996 Emphasis on results vs. process e
e Requires monitoring the effectiveness of maintenance activities Scope includes non-safety-related equipment as well as safety-related equipment Integrates consideration of risk into the maintenance i
process (slide 3) i
1 t
-M'AfNTENANCE RULE SCOPE
]
l Safety-related SSCs 1
e Non-safety-related SSCs That are relied upon to mitigate accidents or transients or are used in EOPS Whose failure could prevent safety-related SSCs from performing their function 1
Whose failure could cause a scram or actuation of a safety-related system 4
(Slide 4) e
---es, w+'4-ar e
e-w.e-
+'--prm+'
y
- t ur
-*N ets g-e-
- r=*=!'s-
--e m.
I
=
1 MABNTENANPCE RUiJE PROVISIONS 50.65 (a)(1) Monitoring and Goal Setting Monitor the performance of SSCs against goals o
Goao are to be established by the licensee ij Goals are to be commensurate with safety 1
Goals are to be
'ormance oriented (reliability /
availability) or cond..
oriented (parameters) e Where practical, tar into account industry-wide operating experience When SSC performance or condition does not meet the goal, appropriate corrective action must be taken (slide 5)
50.65 (a)(2) PRB/ENTIVE MAINTENANCE Monitoring (per (a)(1)) is not required when it has been o
demonstrated that SSC performance or condition has been effectively controlled by preventive maintenance e
Conversely, maintenance preventable failures would 1
indicate the need for corrective actions and/or goal setting and monitoring 1
- s d
l l
1 i
.(Slide 6)
- - - - - = - -
~ -..
50.65 fa){3} EVALUATION AND ADJUSTMENT ACTIVITIES Goals, monitoring, and preventive maintenance activities e
to be evaluated at least every refueling cycle, not to 1
' exceed 24 months Industry experience to be considered An evaluation to determine the effect on plant safety functions should be made whenever any SSC is taken out of service for maintenance Adjust maintenance activities to balance prevention of failures (preventive maintenance) against minimizing SSC unavailability SSCs (Slide 7)
1 IMPLEMENTATION ACTIVITIES a
e NRC issued Regulatory Guide 1.160 (endorsing NUMARC 93-01) in June 1993 NRC to develop new inspection procedure for rule that e
will be discussed at industry workshop in spring 1994 Pilot inspections after public workshop e
1 Results to licensees for information only ij Plants selected through coordination between regions and NUMARC Lessons learned workshop on final version of inspection e
procedure in sp. ring 1995 I
~
(Slide 8)
-