ML20205C512
| ML20205C512 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 08/05/1986 |
| From: | TOLEDO EDISON CO. |
| To: | |
| Shared Package | |
| ML20205C419 | List: |
| References | |
| TAC-62221, NUDOCS 8608120342 | |
| Download: ML20205C512 (4) | |
Text
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PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 1.
With a half-life greater than 30 days (excluding Hydrogen 3)and 2.,
In any form other than gas.
b.
Stored sources not in use - Each sealed source and fission detector shall be tested prior to use or transfer to another licensee unless tested within the previous six months. Sealed sources and fission detectors transferred without a certifi-cate indicating the last test date shall be tested prior to being placed into use.
, c.
Startup sources and fission detectors - Each sealed startup source and fission detector shall be tested within 31 days prior to being subjected to core flux or installed in the core and following repair or maintenance to the source.
4.7.8.1.3 Reports - A report shall be prepared and submitted to the Comission on an annual basis if sealed source or fission detector leakage tests reveal the presence of. 0.005 microcuries of removable 3
contamination.
l DAVIS-BESSE, UNIT 1 3/4 7-37 f
8608120342 860805
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PLANT SYSTEMS 3/4.7.9 FIRE SUPPRESSION SYSTEMS FIRE SUPRESSION WATER SYSTEM i
LIMITING CONDITION FOR OPERATION 3.7.9.1 The fire supression water system shall be OPERA 8LE with; a.
Two high pressure pumps, each with a capacity of 2500 gpm, with their discharge aligned to the fire suppression header, 15.
Separate water supplies, each with a minimum contained volume of 250,000 gallons, and c.
An OPERA 8LE f're path capable of taking suction from the Intake Forebay and the Fire Water Storage Tank and transferring the w2ter through distribution piping with OPERA 8LE sectionalizing control or isolation valves to the yard hydrant curb valves
- and the first valve head of the water flow alarm device on each sprinkler hose standpipe or spray systaa riser required to be OPERABLE per Specifications 3.7.9.2 and 3.7.9.3.
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APPLICABILITY: At all times.
ACTION:
With one pump and/or one water supply inoperable, restpre the a.
inoperable ecuipment to OPERABLE status within 7 days,*Apreoare yl and submit a Special Report to the Comnission pursuant'to S
Specification 6.9.2 within the next 30 days outlining the plans and procedures to be used to provide for the loss of redundancy in this system. The provisions of Specifications 3.0.3 and 3.0.4 are not applicable.
b.
With the fire suppression water system otherwise inoperable:
1.
Establish a backup fire suppr':ssion water system within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and 2.
Submit a Special Report in accordance with Scecificatien 6.9.2; a)
By telephone within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, 1
b)
Confire.ed by telegrach, mailgram or facsimile trans-mission no later than the first working day follcwing the event, and DAVIS-BESSE, UNIT 1 3/4 7-38 Amendment No. [ 93
IlilS PME PRDillDED PLANT SYSTEMS 9 m g wea n ov an.
k I.1 BASES 3/4.7.7 HYDRAULIC SNUBBERS The hydraulic snubbers are required OPERABLE to' ensure that the structural integrity of the reactor coolant system and all other safety related systems is maintained during and following a seismic or other event initiating dynamic loads. The only snubbers excluded from this inspection program are those installed on nonsafety related systems and then only if their failure or failure of the system on which they are installed, would have no adverse effect on any safety related system.
The inspection frequency applicable to snubbers containing seals fabricated from materials wnich have been demonstrated compatible with their operating environment is based upon maintaining a constant level of snubber protection. Therefore, the required inspection interval varies inversely with the observed snubber failures. The number of inoperable snubbers found during an inspection of these snubbers detar-mines the time interval for the next required inspection of these snubbers.
Inspections perfonned before that interval has elapsed may be used as a new reference point to determine the next inspection. However, the results of such early inspections performed before the originel recuired time interval has elapsed (nominal time less 25%) may not be used to lengthen the recuired inspection interval.
Any inspection whose result:
require a shorter inspection interval will override the previous schedule.
To provide furt.ner assurance of snubber reliability, a representa-tive sample of the installed snubbers will be functionally tested curirg plant shutdowns at 18 month intervals.
These tests will include strot:ir.;
of the snubbers to verify proper piston movement, lock-up and bleed.
Observed failures of these samole snubbers will require functional testing of additional units.
To minimi:e personnel exposures, snubbers ins:alled in nign radiation zones or in especially difficult to remove loca: ions may be exempted from these functional testing requirements crovided the OPERABILITY of these snubbers was demonstrated during functional testing at either the completion of their fabrication or at a subsequent date.
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e BASES-3/4.7.8 SEALED SOURCE CONTAIMINATION The limitations on removable contamination for sources requirin leak testing, including alpha emitters, is based on 10 CFR 70.39(c) g limits for plutonium. This limitation will ensure that leakage from by product, source, and special nuclear material sources will not exceed allowable intake values.
3/4.7.9 FIRE SUPPRESSION SYSTEMS The OPERABILITY of the fire suppression systems ensures that adecuate fire suppression capability is available to confine and extinguish fires occuring in any portion of the facility where safety related equiemant is located.
The fire suppression system consists of the water system, spray and/or sprinklers, and fire boss stations. The collective capability of the fire sucpression systems is adequate to minimize potential damage to safety related equipment and is a major element in l
the facility fire protection program.
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In the event that portions of the fire suppression systems are incoerable, alternate backup fire fighting equipment is required to be i
made available in the affected areas until the inoperable equipment is restored to service.
In the event the fire suppression water system becomes inoperable, imediate corrective measures must be taken since tais system provides the major fire suppression capability of the plant. The requirement for 1
a twenty-four hour recort to the Commission provides for promet evalua-l tion of the acceptabil,ity of the corrective measures to provide adecuate fire suppression capability for the continued protection of the nuclear
{l plant.
3/4.7.10 PENETRATION FIRE BARRIERS The functional integrity of the Meration fire barriers ensures I
that fires will be confined or aceerely retarded from spreading to adjacent portions of the facility.
Nt :asign feature minimi:es tne possibility of a single fire rapiily h..dving several areas of the facility prior to detection and extinguisnment.
The penetration fire i
barriers are a passive element in the facility fire protection program i
and are. subject to periodic inspections t
Durino periods of time when the barriers ere not functional, a c:r.-
tinuous fiie watch is required to be maintained in the vicinity of tne affected barrier until the barrier is restored to functional status.
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el CAVIS-CESSE, UNIT I B 3/4 7-6 Amendment No. 9 4