ML20052H219

Proposed Tech Spec Re Surveillance Requirements,Revising Air Flow Velocity Requirements

ML20052H219
Person / Time
Site:	Beaver Valley
Issue date:	05/13/1982
From:	DUQUESNE LIGHT CO.
To:
Shared Package
ML20052H215	List: ML20052H214 ML20052H219
References
NUDOCS 8205200075
Download: ML20052H219 (1)

Text

i l

e .

PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2. Verifying that the HEPA filter banks remove 99% of the DOP when they are tested in-place in accordance with ANSI N510-1975 while operating the ventilation system at a flow rate of 36,000 cfm t 10%.

3. Subjecting the carbon contained in at least one test canister or at least two carbon samples removed from one of the charcoal adsorbers to a laboratory carbon sample analysis and verifying a removal efficiency of 290% for radioactive methyl iodide at an air flow velocity of 0.9 l ft/sec ! 20% with an inlet methyl iodide concentration of 3

0.05 to 0.15 mg/m , 395% relative humidity, and 2125'F; other test conditions shall be in accordance with USAEC RDT Standard M-16-1T, June 1972. The carbon samples not obtained from test canisters shall be prepared by either:

a) Emptying one entire bed from a removed adsorber tray, mixing the adsorbent thoroughly, and obtaining samples at least two inches in diameter and with a length equal to the thickness of the bed, or b) Emptying a longitudinal sample from an adsorber trcy, mixing the adsorbent thoroughly, and obtaining samples at leas t two inches in diameter and with a length equal to the thickness of the bed.

4. Verifying a system flow rate of 36,000 cfm : 10% during system operation.

c. At least once per 18 months by:

1. Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks is 46 inches Water Gauge while operating the ventilation system at a flow rate of 36,000 cfm ! 10%.

3/4 7-20 8205200075 820513 PROPOSED WORDING PDR ADOCK 05000 P

BEAVER V ALLEY- U NIT 1