ML20127B331
Text
g w e wy_;_ _
w.;
+
8
, w wc:a. a
/
x
.a e
~
.s
').
J m., w a,9
. E,, a n
,,3 N,,
c.r.
- ) i. i :s.)'
t :.f 1:,
- 'iq Ma
. i : nn.
M - to:, im -
'-t O t < e.
M.ite iais, ' n.fa lc = l,ind in !tm %
. 1:
'e t oI g<
0 3 i s s ori.; f I aireering I RGtt i 0 1.iu. Chief Haterials [ngineering f$racto Divi'
- p. of Lngineering SUCLCi CRAND Lutf UN11 1 TECHNICA; #EC H itti! W.
As requested ty your 4,emor mdum dated February 27, 1981, the Materials ingineering Branch, Division of Engineering, nas re-res (ewed the Grand Gulf Unit i fechnical Specifications.
The sections restewed were 4.0.S, B. 4.0. 5 and 3 '4 4. 6 on pages 3/4. 4 -17 through 3/4. 4. -10.
sectfuns 4.0,5 and B.4,0.5 address inservice inspection of components and inservice testing of pumps and valves.
portion of sei.tlons 4.0.5 and B.4.0 5.We* h<sve reviewed the insevice inspection The inservice testing portion of 5(f t inns 4.0.', and 8.4.0.5 tre the responsibility of the Mcchinical Inyineering Branch.
The portions of technical specifications sections 4.0.5, 8.4.0.5 and 3/4.4.6 that we have reviewed were derived f rom the staff's analyses, and evaluation of Grand Gulf Final Safety Report Sections 5.2.4. 5.3.1, 5,3.?, 6.6, and amendments thereto.
Hence, the Grand Golf Unit 1 Technical Specifications comply with Section 50.36 of 10 CFR 59.
However, as we indicated in a comorandum from B. D. Liaw to C. O. Thom n dated December 15,1983 (attached), the pressure terrperature lir'its in figure 3.4.6.1-1 do not comply with the closure fiange 6,ressure te,peratore safety margins in Paragraph 10 A.2 of Appendix G, 10 Cf P $0, wnich bec ame ettective on July 26, 1933.
We will be sending to a)) licensees / applicants a generic letter informing them of the revised regulatoiy requirements, in accordance with that letter, the pressure temperature limit curves in figure 3.4.6.1 1 may require revision.
e
- 8. O tiaw, Chief Materials logineering Oranch Division of inqineert:q
~;tA hment:
As statta
.c
- s. e P ye 2 icut,*r!'
LL El t iot V7114 r '
L.-. ~...~,
/ (140]!400fi/ fl40303 XO )
/
cr f,Dece ON N AtA
'l r
^
k f
3
_.),g i
- a i
I t
l
+
I i
J !.
.>rr l
I l'
.i.;
6*
J. N ! i.
J s n
- r, - '
T. N.A i
R Bu u.co A
'et.eu r k.
- , Q I e h s' Ifi
- 5. Paull(ki M
- 0. Houston C. Thomas B. D. Liu C. Cheng W H.netton l
R. Klecker L
M. Hum t
- 8. [Iliot i
i i
r P
i 1
i a
0 $iR Uf!ON:
LE Files m ND l
3 t
r i
i
/
y ;n'
/
M k ha Q
'. $f tB 1
\\
DC: MilB'/"
DE;MIEB Of.r 01 Q
0(hitB B. Elliot' vt/ jar M, Hunt W.,Hatellen C.
Y, heny B.
. Llaw 2/29/84 3/ g
/84 3/ g
/84 3/ g
/84 3/g
/84 i
DE: AO:MCLI W.V.dehhfon 3/
't
/84 1
4
G.
a*
Grand Gulf Order 1.
Staff questioned reliability of TOI diesel 2.
While no diesels at 5% would not significantly increase risk, any risk would be reduced if on sight power enhanced.
3.
In view of the questionable reliability of the TOI diesel' it was in the public interest to resolve the question promptly by inspection.
4.
The licensee did not went to inspect the diesels until after greater than 5% license issued.
5.
Therefore, it was concluded that it was in the public interest to require that a TDI diesel with the longest hours be inspected and in view of the low risk at 5% do it before proceeding above 5%.
6.
In addition since n_o diesels at 5% power would not significantly increase the risk and the raargin of safety could be increased by adding T.S. to the gas turbine system, it was concluded that shutdown under a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> LCO is not required, i
7.
The end result being 1 questionable TDI and I reliable gas turbino systen was better than 2 questionable TDI.
L
(
c.,
6
. 8.
The order was made immediately effective because public health, safety and interest required:
a.
prompt inspection b.
increased reliability Exemptions 1.
ilhile 1 TDI and 1 gas turbine is better than 2 TDI neither meets GDC-17.
2.
Therefore, told licensee to provide within 7 days and exemption analysis meeting Shoreham order or in the alternative shut down.
3.
In view of the lack of innediate safety hazard based on staff's 5%
analysis and gas turbine enhancement did not believe an immediate effective shut down was required.
4.
Therefore, exercised prosecutorial discretion to allow for time to file exemption.
p 4
4 1
.