ML20028H357

Proposed Tech Specs Re Rev to Tech Spec 4.7.7.d.4 Which Requires That Heaters in Piping Penetration Area Filtration & Exhaust Sys Dissipate 80 Plus or Minus 4 Kw When Tested, Per Section 14 of ANSI N510-1980

ML20028H357
Person / Time
Site:	Vogtle
Issue date:	12/20/1990
From:	GEORGIA POWER CO.
To:
Shared Package
ML20028H356	List: ML20028H355 ML20028H357
References
NUDOCS 9101020036
Download: ML20028H357 (3)

Text

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ENCLOSURE 3 V0GTLE ELECTRIC GENERATING PLANT REQUEST TO REVISE TECHNICAL SPECIFICATION 4.7.7.d.4 INSTRUCTIONS FOR INCORPORATION O The proposed change to the Vogtle Unit I and Unit 2 Technical Specifications would be incorporated as follows:

] Remove Pace Insert Paae 3/4 7-17* and 3/4 7-18 3/4 7-17* and 3/4 7-18 C

-

• Overleaf oaae containina no chance E3-1 9101020036 901220 4 DR ADOCK 0500

5- l PLANT SYSTEMS ,

3/4.7.7 PIPING PENETRATION AREA FILTRATION AND EXHAUST SYSTEN SURVEILLANCE REQUIREMENTS (Continued)

Verifying within 31 days after removal that a laboratory analysis

~

-2) of a representative carbon sample obtained in accordance with Section 13 of ANSI N510-1980 meets the laboratory testing cri-terion of greater than or equal to 99.8% when tested with methyl iodide at 30'C and_70% relative humidity.

3) Verifying a system flow rate of 15,500 cfm

• 10% during system operation when tested in accordance with Section 8 of ANSI N510-1980,

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, by verifying,-

withit 31 days after removal, that a laboratory analysis of a repre-sentative carbon sample obtained in accordance with.Section 13 of ANSI N510-1980 meets the laboratory testing criteria of greater than or equal to 99.8% when tested with methyl iodide at 30*C and 70%.

relative humidity; ,

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 Water Gauge while operating the systes at a flow rate of 15,500 cfm t 10%.

Vwrifying that thecsystem starts on a Containment Ventilation

2) . -Isolation test signal,

-3) _ Verifying that the system maintains the Piping Penetration Fil-

- tration Exhaust Unit Room.at a negative pressure of greater than or. equal to 1/4 inch Water Gauge relative to the.outside  :

atmosphere (PDI-2550, PDI-2551), and

4) Verifying _that the heaters dissipate.80 t 4 kW when tested'in accordancewithSection'14ofANSI.N510-1980.#

e.  : After each complete or partial replacement of a HEPA filter bank by verifying.that the HEPA filter banks remove greater than or equal to 99.95% of_the DOP when they are tested in place in accordance with Section 10 of ANSI N510-1980 while operating the systen at a  ;

flow rate of 15,500 cfm

• 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 Section 12 of

. ANSI N510-1980 while operating the system at a flow rate of 15,500 efa

• 10%.

4 inse et Fxtpote V0GTLE UNITS - &- 3/4 7-18 -

INSERT Until restart following the fourth refueling outage of Unit I and until restart following the second refueling outage of Unit 2 this specification shall read as follows: The surveillance may be conducted by verifying that heater capacity is suftitient to maintain the relative humidity of the airstream through the filters at 70 percent or less under design basis accident conditions when tested in accordance with section 14 of ANSI H510-1980, 021541

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