ML19209A125
| ML19209A125 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 09/05/1979 |
| From: | Erickson P Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7910020587 | |
| Download: ML19209A125 (4) | |
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION 3
j wasmucron o.c.20sss
'o, i
y September 5, 1975 Docket No. : 50-285 LICENSEE: OMAHA PUBLIC POWER DISTRICT (OPPD)
FACILITY: FORT CALHOUN
SUBJECT:
MINUTES OF AUGUST 23, 1979 MEETING GN CONTAINMENT PURGING Subject meeting was held in Bethesda, Maryland to discuss containment purge valve and vent valve designs, purge operating requiremencs and purge electrical override circuitry. Enclosure 1 identifies participants at this meeting.
OPPD personnel agreed to provide certain infomation on an expedited basis by phone. Subsequent to the meeting OPPD provided that infonnatinn as follows:
- 1) The radiar:an monitoring equipment in the containment building is not, nor was it intended to be, safety grade.
- 2) There is one switch for each of the four containment purge valves.
- 3) Typical radioactivity levels in the reactor coolant system are:
Iodine-131 equivalent is 2.476 X 10-2 microcuries/gm Iodine-131 is 1.34 X 10-2 microcuries/gm Total Iodine is 1.5 X 10-I microcuries/gm Total activity is 3.53 microcuries/gm.
- 4) The hours of containment purging in " Hot Standby" or " Power Operation" have been as follows:
1976 - 21 hours2.430556e-4 days <br />0.00583 hours <br />3.472222e-5 weeks <br />7.9905e-6 months <br /> at Hct Standby 189 hours0.00219 days <br />0.0525 hours <br />3.125e-4 weeks <br />7.19145e-5 months <br /> at Power Operation 1977,1978 and 1979 to date - No purges in Hot Standby or Power Operation.
1136 096 M
7910020 Kgq u
Minutes of 8/23/79 Meeting on Containment Purging The NRC staff discussed our guidance on " Demonstration of Operability of Purge and Vent Valves Under Accidant Conditions" guidance on safety signal requirements for purge and ventilation valves and questions from the NRC Plant Systems Branch cn OPPD responses relative to the " Branch Technical Position" on containment purging (BTP 6-4).
OPPD provided " Data for Containment Purge and Vent Valve Assemblies (Enclosure 2).
No electrical override problems with the Fort Calhoun containment purging system were identified at the meeting in a preliminary review of the electrical prints.
Peter 8. Erickson, Project Manager Operating. Reactors Branch #4 Division of Operating Reactors
Enclosures:
1.
List of Attendees 2.
" Data for Containment Purge and Vent Valve Assemblies" 1136 097 M
Enclosure No. i List of Attendees Meeting with OPPD Purging of Containment 8/23/79 Particicants Orcanization Allan Udy EG&G - Idaho James H. (Jim) Cooper EG&G - San Ramon Douglas B. (Doug) Hackett EG&G - San Ramon J. T. Seard NRC/D0P./PSB J. Kerrigan*
NRC/ DOR /PSB Ed Reeves NRC/00R/ ORS #1 E. G. Adensam*
NRC/ DOR /PSB L. Nichols*
NRC/ DOR Frank Witt*
NRC/ DOR /EEB Walt Pasedag*
NRC/ DOR /EEB Richard Emch*
NRC/ DOR /EEB Peter B. Erickson NRC/ DOR /0RB#4 Bruce J. Hickle OPPD Bob Mehaffey OPPD
- Part Time H36 098 F*
l DATA FOR C0tiTAltiMEtiT PURGE & VEtiT VALVE ASSEMilLIES l
FACILITY: Fort Calhoun Station Unit tio. I fluCLEAR VEllDOR: Combustion Engineering A&E: Gibbs,11111, Durham, and Richardson DATA FOR VALVES Des igha'tTon Tlmed, Seconds Part or
- Inside or on P.I.
Valve Valve Valve Valve Close Model Outside thh - _
1)rm in9.. _ __
S i ze ___
Type _ _ Manufacturer _ _.. _ Ili!1e___.___ _ _flutiiber
_ Containment t
PCV-742A GilDR ll405-M-1 42" Butterfly Allis-Chalmers I sec (Pre-op)
Streamscal PCV-742 A/C are inside Butterly PCV-7420 1 sec (Pre-op)
Valves PCV-742 B/D are cutside Type-42-60 PCV-/42C 1sec(Pre-op)
FR - Refer to Allis-PCV-742D 1.4 sec (Pre-op)
Chalmers Dwg 55756-1 Actuator:
Bettis A < l.5 Robotarm B < l.5 N
Hodel #
C < l.5 2744-SR D < 2.0 llCV-746A GilDR ll405-M-1 2"
Diaphragm Fisher Governor A < 3.8 sec (ISI)
Type 667-A inside (llCV-746A)
Controlled Company S/fl4662172 IICV-74611 Globe B < 3.0 sec (ISI) 4662173 Outside (flCV-7468)
Valve i_ _ _ _ _.
u, Actuator:
[
Fisher 657 E'
Size 40 y
e a
4.
o"
i k
t' i.
MEETIfG SUM?ttRY DISTRIBUTION ORB 44 Mr. Theodore E. Short c.
Assistant General Manager tz Omaha Public Power District 1623 Harney St.
p' Omaha, Nebraska 68102 i
E t
'Acket Fip R. Reid NRC PO V V. Noonan L PDR P. Check ORB #4 Rdg G. Lainas G. Knighton NRR Rdg H. Denton Project Manager E. G. Case OELD OI&E(3)
D. Eisenhut R. Ingram R. Vollmer R. Fraley, ACRS (16)
W. Russell Program Support Branch B. Grimes TERA T. J. Carter J. R. Buchanan A. Schwencer Meeting Sumary File D. Ziemann NRC Participants T. Ippolito JTBeard W. Gamill JKerrigan L. Shao EReeves r
J. Miller, DCR EGAdensam I'
LNichols FWitt WPasedag REmch MWilber, I&E 1136 100'
-