ML19275A455
| ML19275A455 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 08/31/1979 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7910040435 | |
| Download: ML19275A455 (3) | |
Text
.
[,,oaregjo, tJNITED STATES y y> W ', i
. s. (
NUCLEAR REGULATORY COMMISSION
/. E WASHINGTON, D. C. 20555
, %i.gf
- o,...../
e.,
v A[jG 311573
' MEMORANDUM FOR:
T. Ippolito, Chief, Operating Reactors Branch #3, DOR FROM:
G. Laina's, Chief, Plant Systems Branch, D0R SUSJECT:
REQUEST FOR ADDITIONAL INFORMATION - CONTAINMENT PURGE SYSTEM - COOPER NUCLEAR STATION (TAC 10182)
REFERENCES:
1.
Letter to T. Ippolito from J. Pilant, " Containment Purging During Normal Operation," dated January 4, 1979 2.
Final Safety Analysis Report, Cooper Nuclear Station Plant Name:
Cooper Nuclear Station Docket No. :
50-298 Project Manager:
V. Rooney Review Status: Awaiting Information With regard to the containment purge system and centainment venting system at the Cooper Nuclear Station, the licensee has elected to justify unlimited purging.
Section B of Plant Systems Branch, after having reviewed the documents (Reference 1 and 2) filed by the licensee, has prepared the enclosed request for additional information.
b M
~
G. Lainas[ bief Plant Systems Branch Division of Operating Reactors
Enclosure:
As stated Centact:
J..Kerrigan/D. Shum X-27110 cc w/encicsure:
See next ; age 1998 151 7910040 3g P
nClt-f0 (
. cc w/ enclosure:
D. Eisenhut B. Grimes W. Gammill L. Nichols e
V. Rooney E. Adensam E. Reeves D. Tondi D. Shum J. Kerrigan J.T. Beard G. Knighton V. Noonan 1098 152
ENCLOSURE
_ REQUEST FOR ADDITIONAL INFORMATION FOR CONTAINMENT PURGE SYSTEM AND CONTAINMENT VENTING SYSTEM FOR COOPER NUCLEAR STATION DOCKET NO. 50-298 1.
With regard to the containment purge and. venting system, provide the following information:
a.
Discuss the provisions made to ensure that isolation valve closure will not be prevented by debris which could potentially become entrained in the escaping air and steam, b.
Discuss the provisions made for testing the availability of the isolation function and the leakage rate of the isolation valves, individually, during reactor operation.
c.
Specify the amount of containment atmosphere released through the purge and vent isolation valves for a spectrum of break sizes during the maximum time allowed for them to close in your Technical Specifications.
d.
Provide an analysis to demonstrate the acceptability of the provisions made to protect structures and safety-related equipment; e.g.,
fans, filters, and ductwork, located beyond the purge system isolation valves against loss of function from the environment created by the escaping air and steam, e.
Specify the allowable leak rates of the purge and vent isolation valves for the spectrum of design basis pressures and flows against which the valves must close.
f.
Section 6.2.4 of the Standard Review Plan requires diversity in the parameters sensed for the initiation of containment isolation.
In order to provide diversity for a spectrum of break sizes, the parameters sensed should include containment pressure, safety injection actuation, and containment radiation level. The instrumentation and contrcl sy~ stems provided to isolate the purge system lines should meet the standards appropriate to engineered safety features; i.e., quality, redundancy, testability, and other appropriate criteria.
l098 i53
.