ML20091A657
| ML20091A657 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 05/03/1976 |
| From: | Mayer L NORTHERN STATES POWER CO. |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9105160432 | |
| Download: ML20091A657 (3) | |
Text
_
t NSE3 NORTHERN STATES POWER COMPANY i.H N N E A M O u e, N4 OTA W54p9 w.g
/
Docat?to
~S B
\\ P l~!a~c, May 3, 1976
/
14AY f 197 -
(f G
'9 9 z " 'in'et'&' 5 1
~
2 p
9 "
p, 6
O Mr. D L Ziemann, Chief r
/S/
Operating Reactors Branch No. 2
- (@go,g s
y No % gA y Division of Operating Reactors g
id 4
US Nuclear Regulatory Cor.unission ig-i Washington, DC 20555 j
Regulatory D^det File l
~
Dear Mr Ziemann:
MONTICELLO NUCLEAR GENERATING PLATT Docket No. 50-263 License No. DPR-22 l
Revision to Technical Specifications Relating to Hydraulic Snubbers In your letter dated December 17, 1975 you requested Northern States Power Company to submit a License Amendment Request to modify the Technical Spect-fications covering safety related hydraulic snubbers.
- 1he modifications we were requested to submit included:
a.
Specifying what must be included in visual snubber inspectir,ns, b.
Entseging the scope oi Table TS 3.6.1 to include infonns -
tion on snubber area radiation levels and ease of remoeal, c.
Deletion of snubbers in High Radiation Areas or snubbers "especially difficult to remove" from functional testing.
l Item (c) has presented some dif ficulty.
We hase completed an initial evalua-l tion of each sa fety related snubber at Monticello and have found that the majority of the snubbers located in the drywell can be classified as either "especially difficult to remove" or located in areas of greater than 100 mR/hr t.fter shutdown.
Snubbers were considered "especially difficult to remove" if:
a.
HSSA-30 or larger in size.
b.
Greater than 5 feet above or greater than 1 foot below an installed platfonn.
Under the provisions of the model Technical bpecifications sent to us on December 17, 1975, this would exempt most drywell snubbers from periodic 5
d.ed2 9105160432 760503 PDR ADOCK 05000263 P
pon
6 I
NOR iERN OTATED POWER CC....PANY r
May 3, 1976 i removal for operability testing.
We believe that a sampling of these anubbers should be included in those selected for functional testing.
We will continue to conduct snubber surveillance in accordance with the more restrictive Technical Specifications issued on September 15, 1976.
During the next dr>vell snubber inspection, however, we will conduct a detailed radiation survey at the location of each safety related snubber.
Follovias this survey we will submit the Technical Specification Change Request outlined in your December 17, 1975 letter.
This submittal will most likely utilize a higher radiation level than 100 mR/hr as the criterion to exempt a snubber from inspection.
Yours ve ry truly, L 0 Mayer, PE Manager, Nuclear Support Services LW/DMM/ deb cc:
J G Keppler G Charnof f MPCA Attn: J W Ferman
~. _ ~ - ~ _. ~ ~ - - -. ~ ~ -
. - - - ~ ~ ~
.. ~. -...
---.a--...-..,~-
- b U.$. NUC U AH HL (.UL AT OR Y CWiMlWlON
(>OC rd 1 NUM Dt H (JH(, g pHM 19{3 50-263 a
9 ni
'NRC DISTRIBUTION ron PART 50 DCCKET MATERIAL FROM:
oAtt os oocvMtNT jo:
NORTilERN STATES POWER COMPANY 5/3/76 MA. D. L. ZIEMANN MINNEAPOLIS, MINNESOTA occ Hoecivgo L. O. MAYER 5/6/76 66 tie n ONotonerLo Paor INPUTFOHM NUMDC H Of CoPstS HE CCIVEO COnioin A L PEUNe t Assir ic o ONE SIGNED Ocopy ENCLOCUHE Di sC HIPTION I
LTR RE OUR 12-17-75 LTR........ FURNISHING
'1 INFO. CONCERNING LICENSE AMENDMENT REQUEST-
'IO MODIFY THE TECH SPEC. COVERING SAFETY RELATED HYDRAULIC SNUBBERS.
ACKNOWLEDGED DO NOT REMOVE PLANT NAliE:
MONTICELLO SAFETY FOR AC fl0N/INFORMATION E!IVIRO 5/7/76 RJL ASSIGNED AD.
ASSIGhED AD :
BR'5NCFCHIEF :
@gggy PRANCll CllIU7 ;
PROJECT IOUAGER:
J g.y PRGJECT 11A::AGER :
. LfC~A53T. :
LIC. ASST. :
pp e INTERNAL DlSIRlCUTION 3G FTl &
SYSTrMS_ SAD;Iy
_. plant _sysTgl:S
_ ENVIRO TEC11 NRC PDR llRIEUMAN
_TEDESCO
.II'?iST 1 f* E
_SCllROEDEP
_ISUA.ROYA
. PAT. LARD
__0 ELD
._LAlf!AS SPAtlCLER I
COSSICK & STAFF ENGII;FJBRIG 1PPOLITO siTfTECll MIPC M CCARY i
C6ME KilIGHT OPERATING RI' ACTORS G^t?ll LL STEPP
- __jMtl aller SIl!WEIL STELLO hUlllAN
_IIARLESS PAWElCKI OPERATING TICil i
PROJECT MANAGE:lEliT RI'. ACTOR SAFETY CISEt31UT SITE ANALYSIS VOL11rER
't BOYD ROSS SilA0 P. COLLINS NOVAK nAng lulNCll i
llOUSTON ROSZTOCZY SC!191:NCI:R J. COILINS PETERSON CllECK GRll!ES KPECER 111:
lii!S
~~~
~
Tr&I SITE _S. AFliTYJ_P._: 71RC SKOVil0LT SALTZrtAN ANALYSIS RilTHl:RG 1)ENTON 6 MtII,1.I:rt CONT HOL NUMBEH i
1.X li.HN AL Olut Bluu llON
~
~
1mooKilAVEN tiATL 1.All_
._LPDR:U/NNEAt'at./S,d/Md.HATL LAH TIC Hl:C. V-lE UI UlKSON QC41.)
..NS]C 1.A PDR
((
i ASLn Coluilll;rAttrS
. ACRS/d lei"P.D EN HAG 4$
.==..:===.:=-.-
- :=.
_=