ML19318C795
| ML19318C795 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 06/17/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19318C789 | List: |
| References | |
| NUDOCS 8007020294 | |
| Download: ML19318C795 (2) | |
Text
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O Enclosure ?
REFUELING OPERATIONS CONTAINMENT BUILDING PURGE FILTRATION SYSTEM LIMITING CONDITION FOR OPERATION The Containment Building Purge Filtration System shall be exhausting through HEPA filters and charcoal adsorber.
APPLICABILITY: WHEN IRRADIATED FUEL IS BEING HANDLED IN THE CONTAINMENT AND
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IRRADIATED FUEL HAS DECAYED LESS THAN (285) HOURS ACTION: With the requirements of the above specification not satisfied, suspend all operations involving movement of fuel within the containment until the system is restored to operating status.
SURVEILLANCE REQUIREMENTS The Containment Building Purge Filtration system shall be demonstrated OPERABLE:
Priortomovementofirradiatedfuelincontainmentbyinitiating, a.
from the control room, flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> with the heaters on.
b.
At least once per 18 months or (1) after any structural maintenance of the HEPA filter or charcoal adsorber housings, or (2) following painting, fire or chemical release in any ventilation zone communicating with the system by:
1.
Verifying that de purge filtration system satisfies the in-place testing acceptance criteria and uses the test procedures of Re;ulatory Positions C.5.a. C.5.c and C.5.d of Regulatory Guide 1.52, Revision 2, March 1978, and the systen flow rate is cfm + 10%.
2.
Verifying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accor-dance with Regulatory Position C.6.b of Regulatory Guide 1.52 Revision 2. March 1978, meets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52 Revision 2, March 1978.
3.
Verifying a system flow rate efm + 10% during system l
operation when tested in accordance wiTh ANSI N510-1975.
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c.
After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber operation and 45 days I
prior to refueling operations by verifying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory l
Guide 1.52, Revision 2. March 1978, meets the laboratory testing l
criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, l
Revision 2 March 1978.
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d.
At least once per 18 months by:
1.
Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks is less than (6) inches W ter Gauge while operating the system at a flow rate of a
cfm -t 10%.
2.
Verifying that the filter cooling bypass valves can be manually opened.
3.
Verifying that the heaters dissipate
+
kw when
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tested in accordance with ANSI N510-1973[I"'-
e.
After each complete or partial replacement of a HEPA filter bank by verifying that the HEP.A filter banks remove greater than or eaual to 99.95% of the DOP when they are tested in-place in accordance with ANSI N510-1975 while operating the system at a flow rate of cfm j; 10%.
f.
After each complete or partial replacement of a charcoal adsorber bank by verifying that the charcoal adsorbers remove greater than or equal to 99.95% of a halogenated hydrocarbon refrigerant test gas when they are' tested in-place in accordance with ANSI N510-1975 while operating the system at a flow rate of cfm j; 10%.
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