ML20086E529
| ML20086E529 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 04/19/1973 |
| From: | Walker R PUBLIC SERVICE CO. OF COLORADO |
| To: | Flora J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20086E522 | List: |
| References | |
| NUDOCS 8312070374 | |
| Download: ML20086E529 (2) | |
Text
1 pu$e Service Company OCderadIo
\\\\
L b
P.O. Box 840, Denver, Colorado 80201
\\
I April 19, 1973 Mr. John Flora, Director Directorate of Regulatory Operation, Region IV U.S. Atomic Energy Commission 10395 West Colfax Denver, Colorado 80215
Subject:
Docket No. 50-267 Valve Wall Thickness, Nuclear Safety Related Valves Ref.:
(A) USAEC Letter dated 11-14-72 (B PSC Letter dated 12-13-72 (C PSC Letter dated 12-29-72 (D USAEC Letter dated 3-1-73
Dear Mr. Flora:
In accordance with Reference (C) and subsequent follow-up meetings we have completed our review of those valves important to nuclear safety, and we have verified that those valves identified as such meet the minimum wall thickness requirements of all applicable codes and standards.
A total of ten valves (HV-2301 through HV-2310) were identified as re-quiring demonstration of acceptable wall thickness. These valves are listed on the attached tabulation which indicaten valve type, service conditions and the minimum wall thickness found. We were unable to produce vall thickness verification from manufacturing records. Wall thicknesses were obtained by actual measurement using a K-Meter (Krautkramer Meter as manufactured by Krautkramer Ultrasonics Incorporated) per the techniques and requirements of pursgraphs (1), (2), (3) and (4) of Reference (A). The meter was calibrated, and is capable of accuracies in the range of 10.005" for the thicknesses measured. It should be noted while the valves were purchased for a 600// USAS rating the valves were produced using 1500// USAS rated forged body stock so that in all cases the measured vall thickness was considerably in excess of minimum requirements.
The details of the measurements, measurement locations, valve sketches, etc., are available in our field office. These records along with any other pertinent information can be made available for review and inspection at '
your convenience.
Very truly yours, 4
8312070374 730426 i ? ]' gg/jy PDR ADOCK 05000267 s-PDR R. F. Walker A
Vice President Engineering and Planning.
Electric Department RW/DWW:kas
[ f f *99 FORT SAINT VRAIN UNIT NO. 1 7.
f 7a 1o
~
VALVE V'ALL THICKNESS. NUCLEAR SAFETY RELATED VALVES w.7 O
g Valve No.
Service Size USAS Rating
- Max. Service Min ?all Min ?;all Fluid Press / Temp Rec'd
.Veesured r
m USAS 16.5
$5$
=
.e HV-2301 Rad Hel 2"
600# Globe 845/780*
0.25" 0.74 "
e p
l'
- n
~* R 1 L.
HV-2302 Rad Hel 2"
600# Globe 845/78#
0.25" 0.68" L
3
.c.
m HV-2303 Pur Hel 2"
600# Globe 845/75 d' O.25" 0.40" 3
i $
g ts 2
)
2 HV-2304 Pur Hel 2"
600# Globe 845/750' O.25" 0.42" m
4 HV-2305 Rad Hel
.1 75 "
600# G' lobe 845/750*
0.2187 0.66" 3
s
+
HV-2306 Red Hel 1.5" 600# Globe 845/750*
0.2187 0.72" 1
z 3
HV-2307 Rad Hel 1.5" 600# Globe 845/-320'/656 0.2187 0.70"
-1 HV-2308 Rad Hel 1.5" 600# Globe 845/-326/650 0.2187 0.68" hs*
HV-2309 Rad Hel 2"
600# Gate 845/-320'/650' O.25" 0.38"
- n l
HV-2310 Rad Hel 2"
600# Gate 845/-320/650' O.25" 0.38" p
c 0
^11 ve1ves were menufectured dv veien ve1ve corg. under aou Specifscetion s
91-M-1 Ygj{
Velves were manufactured from USAS 1500# forged body stock
- z A
Ik %
I b
A-2301 h E-2301 A&3 -
Iv'*z$ck I
b.
E "V'1309 W
pv.230s Hy-2337 "
H v-z3ot.
av-z30s
" W~13 l VV-230 y ggh,.
ScxemATic. or Heuum A
Unds
=
PURIFicA7tOPJ bViTEM F'bMlCIS M
)
9" i
i bon
+
.