ML19319D405
| ML19319D405 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/19/1978 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Grimes B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8003170538 | |
| Download: ML19319D405 (2) | |
Text
,,,-.: m m w n-~~. e'.~.:.g.v c-. ~ w.:, n..
,. m:.
.m, w,+
w-
.#c. w s.. p; e 9,
v ~ ; ~.'..c ',. ~.~ : r._N ~x.~-
-..,.s.... c, w..,
..:; r -s.
':, /
+
.2
_.g n
..a a w k %
e..w.n=r.e m. w.* w-n--c.~..
- 2..a% n n
L
~fx - w:
.en.:
- e -
.: n m. -.<.u: - y a.
' y,. y
<,34 A?c -
4 ;,,
,-y *-
i g,.. - ;..'.
- ~.
~
w
=
_ ~. -
~
- o..
y
- y :: -
r
$$ \\s.g6
~'
MEMORANDU:1 FOR:
B. K. Nimes, Assistant Director
~for Engineering & Projects, 00R l
yActingChief,.
FROM:.
, 4...
Engineering Branch, DOR
~.,
y
SUBJECT:
CRYSTAL RIVER UNIT 3 - REVIEV 0F DECAY HEAT REMOVAL PUMP SHAFT FAILURES
' Plent Mane: CrystaT River Unit 3 MSSS "endor:. Dabcox and Wilcox Dockat Number:; 50-302 Operating Reactors Brcnch and Project Panager:
ORPA, C. Melson i
Engineering and Project Branch Involved:
Engineering P, ranch i
Cescription of Task:
Revtw of Cecay Meat Rccuyal F.:rp Shaf t Failures Raquested Ccepletion Date: 7/20/7E Revfew Status: Re;+ut for Addi tional Inferratien
.ne cugineering dranch, Bi tision of Operating Reacters, les revloed the Florida her Ccrporation letter dated July 7,1973, which is the response to our letter of June 7,1978 concerning the failure of the decay heat reraov&i psp D3P-1A.
'de fir.ti that befora we can ec+oiete this review additional inforntien and cer.fimatcry tectir.g uili be required as delineated.fa the enclosure.
D
- TD *D TYh A o
.[
. S ]
2 1ctingChief A
f
, Engineering Branch..
. f',
at mDivision of Operating P.cactors
_ i
. (y' sV y
~ c e '.
Le r
, y o...
-w
, -n
.v
.. a p. e.ff. ~ -
n.
? C.
5 4 3
6'
. -e
' " ~
"'~"l y
M,,Enclosurc h ;! C ;, 4:s'uz ~^,
- ~,' g$ $gggg4
- c-
.v f
, g.. i 423)JiI(-
1._.... ;. m
. :e
.m
..,,?
Contact:
J. Zudans r;
W" 1-
.<49-28060.-
t n
~
~
~-
.,.:l
,. " $.:.'.K.:. ~n ;..,7.cc:?'V.~Stello i ' W ~ J:i
_ 3 y :
-r-
~ 3:.;
y 7 '.?C y_. -
+.
' W*~
2 0. '
2
~~
n m
m.
-. - s.
s..,. 5 0. Eisenhut a....n
.t -
53P. _ A c
SP2.OR F 8 'O 0.8.....
8 2,< G rt_. a s -.. m2 :z 1
DE d, NHUT M rch.
a 7, - c.
b Noonans 7/
7g
--e..,.c.r.; w.. w.? M._:Bazelton-M.~~
. e,. _v w
O
~g..r.-
)
.f m-
-. e. a.,c_.e _-.
. f. c. -
a : t.
~
.z.
p f.7F I. f5 san _
EBiDOR_ -
ES:00F.i V.M.AC:EB:00Rf. f. ' 'EB.: DOR / '
.AD:EP: DOR
. ^ -
t o,
car.
fl
,1
' - ~.
U
^~-
N L A'N A Le ws '..- )y...
- ' adZ
_ s,.1fk. -
.VNoon b.'s. 2Act.ing Chief wha iton S-
~- T
..,_w.~..m mn w
s D.#dh$dM..$MIr:~i9 F7// k$5 S 7/[/78e 3/8./78W: 157J A % h g, e (78
/
up c
28mC'gonk hs &&&'WY '$' b;Y'~5:kIS$ovenu$a r;mu.'r'~u. $vw N e*Ae'eaZ k.
. M '
?' ' =
- )kk s
- m
/
f.A FLORIDA POWER CORPORATION aS 36 CYRSTAL RIVER UNIT - 3 DECAY HEAT REMOVAL PUMP REQUEST FOR ADDITIONAL INFORMATION I
1.
Provide detailed engineering drawings for this pump with critical dimensions.
If necessary provide this information as propr ietary.
2.
Provide the engineering criteria which was used in determining the new restrictions of operation at low-flow.
3.
Your letter indicates that an inspection of DHP-1B will not be conducted to establish proper pump alignment.
The staff will require an in:7
, ton of this pump to ascertain rotor alignment with respect to the casing prior to resumption of plant operation.
4 Provide any information available on testing conducted to date on pump DHP-1A.
Further a qualification test will be required on this pump unless it has already been completed, which will address the following areas:
A.
Pump response at varying flow conditions anticipated during the life of the pump.
B.
Accelerometer data taken from the bearing housing in the velocity mode to ascertain peak values at varicus frequencies. Demodulated i
acceleration data taken for the pump casing to ascertain the degree of pump rubbing or impact with the stationary wear rings or casing.
C.
A thorough inspection of the pump at the conclusion of the test.
D.
A verification that hydraulic degradation has in one way occurred due to material removal in the volute area of this pump casing j
i 6
.