ML19332A965
| ML19332A965 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 09/04/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19332A963 | List: |
| References | |
| NUDOCS 8009190148 | |
| Download: ML19332A965 (2) | |
Text
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EMERGENCYCOREC00LINGSYSTEq' ECCS SUBSYSTEMS - T v_ s 280'F 3
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LIMITING CONDITION FOR OPERATION 3.5.2 Two independen: ECCS subsystems shall be OPERABLE with each subsystem comprisec of:
One OPERA 5LE high pressure injection (HPI) pump.
a.
b.
One OPERABLE low pressure injection (LPI) pump, c.
One OPERABLE decay heat cooler, and d.
An OPERA 3LE flow path capable of taking suction from the borated water storage tank (BWST) on a safety injection signal anc automatically transferring suction to the containment sump on a borated water storage tank low level signal during the recirculation phase of operation.
A2:LIC'E:L:TY: MODES - 1, 2 and 3.
ACTION:
With one ECCS subsystem inocerable, restore the inoperabl.e a.
subsystem t: OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in HOT SHL'TDOWN within the -next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, b.
In tne event the ECCS is actuated and injects water intc the Reactor Coolan: System, a Special Repor snall be prepared and submi::ed to tne txrnission pursuant to Specification 6.g.2 wi:nin 90 days describing the circumstances of the actuation and the total accumulated actuation cycles to date.
SURVEILLANCE REC'JiREw.ENTS 4.5.2 Each ECCS subsystem sna11 be demonstrated OPERABLE:
At leas *, or:ce per 31 days by verifying that each valve (manual, a.
power ' operated c, automatic) in the flow path that is not locked, sealer.: ar ctherwise secured in position, is in its Correct PL:4* ion.
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SURVEILt.ANCE REQUIREMENTS b.
At least once per 18 months, or prior to operation afta
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piping' has been drain ~ed by verifying that the ECCS pioin, full of water by'. venting the ECCS pump casings.and discht.
piping high points.
By a visual inspection which verifies that no loose debrir.
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.(rags, trash, clothing, etc.) is present in the contairsnent which could be transported :: the containment emergency et=g-
.and cause restriction 'of the.pums. suction during LOCA' con-ditions. This visual inspe: tion shall be performed:
For. all accessible areas of the contairenant prior t:
1.
establishing C0hiAINMEh7 Ih7EGRITY, and-2.
Of the areas affe:ted within containment at the com:letion of each containment entry when C0hTAINMEh7 INTEGRITY is establ ished.
d.
At least once per 16 months by:
..l.
Verifying that the interlocks:
a)- Close OH-ll and-DH-12 and deenergize the pressurizer heaters, if either DH-ll or DH-12 is.open and a simulated reactor coolant' system pressure which is greater-than the '. rip setpoint(<438 psig) is apolied.
b)
Prevent the opening of DH-ll and DH-12 when a simulated or actual reactor coolant system pressure which is greater than tne trip setpoint (<438 psig) is: applied.
2.
A -visual inspection of.the contairrnent amergency se:;
whi:h verifies that the' subsystem suction inlets art not restricted by.de:ris and tnat the sump compenents (trasn ra:ks, screens, et:. ) _ show no evidencs of structural distress or corrosion.
3.
Verifying a total leak rate < 20 gallons per hour for the LPI-system at:
a)
Nomal operating pressure or hydrostatic test pressure of > 150 psig for those parts of the system downstream of the pump suction isolation; valve, and b) 2,45 psig for the piping from the containment emergency
' sump isolation valve to the pump suction isolation i valve.
s.
4.
Verifying that a minimum of 72. cubic-feet of solid granular trisodium ph:sphate dodecahydrate (TSP) is contained within the T3F storage baskets.
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