ML20031A885
| ML20031A885 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/23/1981 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20031A879 | List: |
| References | |
| NUDOCS 8109280349 | |
| Download: ML20031A885 (3) | |
Text
ATTACHMENT A FACILITY OPERATING LICENSE NO. DPR-73 DOCKET NO. 50-320 Replace the following pages of the proposed Appendix "A" Technical Specific'ations with the enclosed pages as indicated. The revised pages contain vertical lines indicating the area of change. The corresponding overleaf pages are also pro-vided to maintain document completeness.
Pages 3.6-1 B3/4 6-1 I 8109280349 810924 iPDRADOCK05000g
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LIMITING CONDITIONS FOR OPERATION 3.6 CONTAINMENT SYSTEMS 3.6.1 PRIMARY CONTAINMENT CONTAINMENT INTEGRITY 3.6.1.1 Primary CONTAINMENT INTEGRITY shall be maintained and all containment penetrations, including at least two OPERABLE containment isolation valves or a double barrier in each penetration, shall be closed when not requi*ed open per procedures approved pursuant to Specification 6.8.2.
Purging or other treatment of the containment atmosphere shall be prohibited until approved by the NRC.
APPLICAILITY:
RECOVERY MODE.
ACTION:
With one containment isolation valve per containment penetration open on inoperable, maintain the affected penetration (s) closed with either:
a.
At least one deactivated automatic valve secured in the isolation position, and b.
At least one closed manual valve, or a blind flange.
CONTAINMENT AIR LOCKS 3.6.1.3 Each containment air lock shall be OPERABLE with:
Both doors closed except when the air lock is being used for transit a.
entry and exit through the containment, then at least one air lock door shall be closed unless otherwise specified per procedures approved pursuant to Specification 6.8.2..
b.
An overall air lock leakage rate of less than or equal to 0.05 L, at P,,
56.2 psig.
APPLICABILITY:
REC 0YERY MODE.
ACTION:
With an air lock inoperable, maintain at least one door closed and restore the air lock to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
THREE MILE ISLAND - UNIT 2 3.6-1
3/4.6 CONTAINMENT SYSTEMS BASES 3/4.6.1 PRIMARY CONTAINMENT 3/4.6.1.1 CONTAINMENT INTEGRITY Primary CONTAINMENT INTEGRITY must be maintained to ensure that the radioactive materials which were released to the containment atmosphere during the March 28, 1979 incident will not be released to the atmosphere.
On November 21, 1979, the Commission issued a Statement of Policy and Notice of Intent to Prepare a Programmatic Environmental Impact Statement addressing the overall decontamination and cleanup activities at TMI-2, including, among other things, the purging or other treatment of the contain-ment atmosphere (44 F.R. 67738).
The Commission recognized in its Statement that it may be in the best interest of the public health and' safety to purge the containment during the development of the programmatic statement.
If the need to take such prompt action arises the Commission has stated that it will consider the advice of the Council on Environmental Quality (CEQ) as to the Commission's NEPA sponsibilities, and moreover, will not take such action until the activity has undergone an environmental review with opportunity for public comment.
The Commission further recognized that there may be emergency situations, not at this time forseen, which could require rapid action.
In these situations, the Commission has indicated its intention to consult with CEQ to the extent pra:ticable.
Accordingly, the purging or other treatment of the containment atmosphere is prohibited until approved by the NRC consistent with the foregoing.
3/4.6.1.3 CONTAINMENT AIR LOCKS The containment air locks must be maintained OPERABLE to provide CONTAINMENT INTEGRITY.
These air locks are being used during entries into the containment to ensure that radioactive materials are not be released to the environs.
The preferred method for ensuring that radioactive materials are not released during these entries is to maintain at least one door closed at all times; however, to permit the passage of long items into the reactor building, both doors may be open simultaneously in accordance with procedures approved pursuant to l
Specification 6.8.2.
l 3/4.6.1.4 INTERNAL PRESSURE l
The negative pressure limit provides assurance that the containment will not exceed its design negative pressure differential.
The positive pressure limit provides a,surance that leakage from the containment will be limited for dose considerations.
THREE MILE ISLAND - UNIT 2 B 3/4 6-1
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