ML19290H015
| ML19290H015 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 12/17/1980 |
| From: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8012220375 | |
| Download: ML19290H015 (3) | |
Text
p BALTIMORE GAS AND ELECTRIC COMPANY P. O. B O X 1475 B A LTI M O R E. M ARYLA N D 21203 December 17, 1980 Aan.ua E. Lu N ov=LL. Ja.
- ce pecs,= c.T s w.. s Mr. Harold R. Denton, Director Office of I!uelear Reactor Pegulation U. S. ?!uclear Pegulatory Con =ission Washington, D. C.
20555
Subject:
Calvert Cliffs !!uclear Power Plant Unit No.1, Docket No. 50-317 Request for Amendment Containment Strav Systen
Dear Mr. Denton:
Baltimore Gas and Electric Co=cany hereby requests an Amendment to its Operating License DPR-53 for Calvert Cliffs Unit ?!o.1 vith the submittal of the following proposed change to the Technical Specifications.
TECH'!ICAL SPECIFICATIO:7 CEA'!GE Paragraph 3.6.2.1:
Add a footnote after the ACTION state =ent to say:
"For the period during cycle 5 operation containment spray loop IIo. 1 is considered operable with total primarf stress for D3E conditions less than 2.LS, where Sh is the allevable h
hot stress as defined in ASME 3'.PV Code Section III Subsection
- C."
DISCUSSIC:i A?!D Jt'STIFICATION As a result of our continuing evaluation of as-built piping required by IE Bulletin 79-1h, we discovered a location on Unit 1 Contain-ment Scray Systen which is highly stressed. Sis condition is caused by a support on spray ring !io. 1 which is mislocated relative to the designed location, resulting in a high strass point on the riser pipe. This over-stressed condition exists only if the Containment Spray Systen is filled with vater (i.e. spraying) coincident with a design basis earthquake. Se Summary Piping Flexibility Analysis is attached. Sese stresses are within the acceptable Level D Service limits of ASME Code Section III (paracrach 3611.2Ch), which has been incorrorated into the Work Plan being used by our architect-engineer for carrying out the requirements of Bulletin ~0-lh.
Sis Work Plan has been audited by :TEC I'2E Vendor Inspection Branch (Eecion
'.) in July 1960, documented in ?!PC letter to Eechtel Power Cornoration
\\
dated August 27, 1980. The specific cuestien of acceptability of this 7 g interim criteria was evaluated by I'cE and ?EB/:3R, and the following A'
position was established:
i 8022",
J75
~
"r. H. R. Centon Page 2 December 17, lo80 "The primary stress for SSE conditions should be less than 2.LSh and any modification of the piping support system should bring the pire stress levels within the Code requirement rather than interin operating requirements."
Eased on the above, we have determined that the use of the interim criteria of 2.hSh is acceptable and does not impair system operability.
This matter has been previously discussed with = embers of your staff.
SAFETY REVIEW This proposed modification to the Technical Specifications has been reviewed by our Plant Operations and Safety Review Co==ittee and Off-Site Safety and Reviev Cc==ittee, and they have concluded that granting the requested relief until the next scheduled refueling outage vill not cause an undue risk to the health and safety of the public.
FEE DFTERMI??ATIO:7 Pursuant to the provisions of 10 CFR Part 170 ve have determined that this request constitutes a Class III Amendment, and, accordingly, a check in the amount of 3h,000.00, corresponding to a Class III Amendment,
vill be forwarded under separate cover.
3ALTIMORE GA" AN' d SIC CCMPA'iY BY:
'a
/
- 1. E. 'Lu dvall', Jr.
[
~
Vice Pres' ent, Supply STATE OF MARYLAND:
- TO WIT:
CITY OF EALTIMORE:
Arthur E. Lundvall, Jr. being duly svorn stated that he is Vice President of the Baltimore Gas and Electric Company, a corporation of the State of Maryland; that he executed the foregoine Amendment for the purposes therein set forth; that the statements =ade in said Amendment are true and correct to the best of his knowledge, information and belie #; and that he was authorized to execute the Amendment on behalf of said corporation.
WITTiES !tt Hand and Notarial Seal:
f i
'tf Cc==ission expires :
cc:
J. A. Biddison, Esquire G. F. Trowbridge, Esquire Messrs. E. L. Conner, Jr. - iRC R. E. Architzel
c2 SU\\1\\1 ARY PIPING FLEXIBILITY AN ALYSIS A
s2l4~ ~ 'l id
[ h k.
DATE
, 2. - s' - f o ANALYST CHECKER Mh '^
DATE
/1-7-32 E ;' '.< " <
DATE
/ 2 -M.
~*#
APPROVED:
O/M CIM ' J Alof Cmr San 2 a d d,,. F, I
- 1) TITLE ISOMETRIC NO.._6<- v-M Thermal Weicht Effec \\ :9eismic
- f Der r a-s -e-2.+ _- -
ra. -
- 2 :
, "- "O D ATE OF RUN 9 5. +-ele t n i-es t.d s.
.,.{--
2)
PROBLE31 NO.
~
31 NIATERIAL 4f~M-4 O s~6 34 _x A
Ctan I
$ Se A 'o d L E to 4 '* L! so 2
f, ' in 41 P1PE SIZE 5)
OPERATING PRESSURE
/ 6'5" A r/ S 3o
- -3, s o
F 66 OPER ATING TE\\1PER ATURE
'20*F 2oc 7f ANALYSIS:
n I 3 3/. /, o Tsu o t Powe< P:p. e Coc/e
}2Q i: r-t.)
/973 fc/ ' ~
%4 T c'
ai Data Point Element Type 3CE9E P:
bl Actual Expansion Stress cl Allow. Expansion Stress = ft 1.25 S + 0.25 S '
- h
~
Cdd n.a A;;:a. ll.;i.h '. 2!!,,) % - SA. Sp..)
40000 hi S)
OPERATING EARTHQUAKE CONDITION E<raCuAec fL M, 7 C/ E ai Response Spectra idenrification S F4' S Fi:
b)
Data Point //
Element Type ldeuh 3lRD PSI floed 2 %al no c)
Seismic Stress =
E8I' 3 P5'
- 2. I 1 C Ps' d)
Long. Weight Stress =
e)
Long. Press. Stress = Pd2
- 2. I H 3 ps o
t> v D2-d2 fi Total Stress = Sc + 8d + 8e =
3MO7 @
(2 '1 Pil
+
D l'O g)
Allow. Seismic Stress = 1.2 Sh*
l 's 91 DESIGN EARTHOU AKE CONDITION C m 7-DOME EL-//,7 oaE Brud ced al Data Point //
Element Type flo och 3 3#f4 A Ps deM 57o 5' r_i b)
Seismic Stress -<>c x 8e =
f f 2. 3 9'i 7._
t a ci Long. Weight Streu = 8d =
O I 4 3 v5 r d) long. Press. Stress = 8e = _ _
- ' 2 I ? 4 %
7h,f r.
et Total Stress = 9b + 9e + 9d =
fl Allow.. Stax. Seismic Streu = Sy at Oper. Temp. _1MCO n' 14200 Psi 43 3 92 es, a '.-,
4,7 O 5 Aca h op,. a u.., = 2. / S A, 4
SSE L oad case
- ,, e,.,.,,
GPD-2611 8/75
/
9