ML20072U437

Revised Tech Specs Re Use of Continuous Pressure Testing of Containment Airlock Door Seal Gaskets in Lieu of Manual Testing

ML20072U437
Person / Time
Site:	Byron, Braidwood
Issue date:	04/08/1991
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20072U240	List: ML20072U237 ML20072U437
References
NUDOCS 9104190138
Download: ML20072U437 (1)

Text

. . . - ___ _______ _ _ _

s e

CONTAINMENT SYSTEMS SURVEILLANCE REOUIREMENTS

4. 6.1. 3 Each containment air lock shall be demonstrated OPERABLE:

a. Within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following each closing, except when the air lock is being used for multiple entries, then at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, by vei-if,,i g see'. h:k:g: i; S:6 e r 0.01---L uncr. th; ;d umsrbstweest

[ 7 the dc;r :eal: i: pr:::=i::d te greaterM8ei,+r ;;veMt' prig, y -fwaat:1sast--lbstinutosfer-

b. By conducting overall air lock leakage tests at not less than P,,

44.4 psig, and verifying the overall air lock leakage rate is within its limit:

1) At least once per 6 months,* and

2) Prior to establishing CONTAINMENT INTEGRITY when maintenance has been performed on the air lock that could affect the air lock sealing capability **

c. At least once per 6 months by verifying that only one door in each air lock can be opened at a time, i e **

d. 0* W* t* M '?*fM ,

that the seal leakage is less than 0.01La (4.63 SCTH) as determined by precision flow measuraments when measured for at least 30 seconds with the volume between the seals at a constant pressure of greater than or equal to 10 psigs

,:~ - -

~._

W 7

l \

l

1) Verifying that thedseal leakage is less than 0.0024La (1,11 SCTH) when *.he j volume between the door seals is prer,surised to greater than or equal to 3 \

g psig by means of a permanently installed continuous pressurasation and ,

leakage monitoring system. or 1

2) Verifying that thed 1 leakage is less than 0.0114 (4.63 SCTH) as determined by precision flow measuraments when measured for at least 30 i seconds with the volume between the seals at a constant pressure of greater than or equal to 10 psig: -

• The provisions of specification 4.0.2 are not applicable.

• • This represents an exemption to Appendix J of 10 CFR Part 50, Paragraph III D.2(b)(ii).

BYRON - UNITS 1 & 2 3/4 6-5 9104190138 910408 PDR ADOCK 05000454 P PDR

i Dr. T.E. Murley 2- Arpil 8,1991 Commonwealth Edison is notifying the State of Illinois of this su 3plement to our application for this amendment by transmitting a copy of this letter to las enclosure to the designated State Official.

To the best of my knowledge and belief the statements contained herein are true and correct, in some respects, these statements are not based on my personal knowledge but upon Information received from other Commonwealth Edison and contractor employees. Such Information has been reviewed in accordance with Company practice and I believe it to be reliable.

Please direct any questions you may have concern lng this matter to this Very truly yours, hnk cms Allen R. Checca Nuclear Licensing Administrator Enclosure cc: S. DuPont Resident inspector, Braidwood W. Kropp Resident Inspector, Byron R. Pulsifer Project Manager, NRR Braldwood A. Hsia - Project Manger, NRR Byron A. Davis Re lonal Administrator, Rlli IDNS Office o Nuclear Facility Safety Stateof2  : County of _ NI' n this J day

, >$f*h by 3

Notary PubtleND C M b' Y d u

l OFFICIAL SE AL " 1

LYNN M. WLOD AR SKI  !

l tdt ARY P&lC. SIATE Or itLih0:S

/ sci:lD767:3 l%,,,

!!f C0"_'/lSt!ON

,___ [XP;RE S C/2$/94

_ _ _ _ - - _ -.