ML20100Q018

Proposed Tech Specs Re Updated Lab Testing Std for Surveillance Testing of Representative Activated Charcoal Samples from CR Emergency Filtration Sys & Standby Gas Treatment Sys

ML20100Q018
Person / Time
Site:	Fermi
Issue date:	01/29/1992
From:	DETROIT EDISON CO.
To:
Shared Package
ML20100Q016	List: ML20100Q018 NRC-91-0160, Application for Amend to License NPF-43,providing Updated Lab Testing Std for Surveillance Testing of Representative Activated Charcoal Samples from CR Emergency Filtration Sys & Standby Gas Treatment Sys
References
NUDOCS 9202050206
Download: ML20100Q018 (2)

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e ffl.AINMENTSYSTEMS r

SURVElllANCE REOUIREMENT5 (Continued)

b. At least once per 18 months or (1) after any structural maintenance on the HEPA filt<er or charcoal adsorber housings, or (2) following painting, fire: or chemical release in any ventilation zone communicating with the subsystem by:

1. Verifying that the subsystem satisfies the in-place penetration and bypass leakage testing acceptance criteria of less than 0.05% and uses the test procedure guidance in Regulatory Positions C.E.a. C.5.c. and C.S.d of Regulatory Guide 1.52. Revision 2. March 1978, and the system flow rate is 3800 cfm i 10%.

2. Verifying .mhin 31 days after removal that a laboratory analysis of a reprotentative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52, Revision 2. March 1978, shows a methyl iodide penetration of less than 0.175% when tested at a temperature of 30'C and at a relative humidity of 70% in accordance with ASTM D3803 1079 with a 6 inch bed; and

3. Verifying a subsystem flow rate of 3800 cfm i 10% during system operation when tested in accordance with 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 within 31 days af ter removal that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C,6.b of Regulatory Guide 1.52 Revision 2.

March 1978, shows a methyl iodide penetration of less than 0.175% '

when tested at a temperature of 30'C and at a relative humidity of 70% in accordance with ASTM 03803 1979 with a 6 inch bed. ]'

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d. At least once por 18 months by:

1. Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks is less than 11.0 inches water gauge while operating the filter train at a flow rate of 3800 cfm i 10%.

2. Verifying that the filter train starts and isolation dampers open on each of the following test _ signals:

a) Manual initiation from the control room, and b) Simulated automatic initiation signal.

! 9202050206 920129 r

PDR ADOCK 05000341 P PDR FERMI - UNIT 2 3/4 6-55 Amendment No.

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.o-I ELANT SYST WS l SVRVElllANCER10V!Rf'tENIS 4.7.2.1 The control room emergency filtration system shall be demonstrated OPERABLE:

a. At least once per 12 haurs by verifying'that the control room air temperature is less than or equal to 95 f.  !

b. At least once per 31 days by:

1. Initiating fan operation from the control room with each  !

- subsystem, establishing flow for at least 15 minutes through the  :

HEPA filters and charcoal adsorbers.

2. Verifying flow through the HEPA filters and charcoal adsorbers 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 asscciated omergency makeup inlet air heater OPERABLE. The subsystem used to establish the 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> of flow through the HEPA filters and charcoal adsorbers shall be staggered such that each subsystem is utilized at least once per 62 days,

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c. At least once per 18 months or (1) after any structural mair.tanance on the HEPA filter or charcoal adsorber housings, cr (2) following L painting, fire, or chemical release in any ventilation zone communicating with the system by:

1. Verifying that the system satisfies the in-place penetration testing acceptance criteria of less than 1.0% and uses the test. '

procedure guidance in Regulatory Positions C.5.a. C.5.c, and C.5,d of Regulatory Guide 1.52, Revisicn 2, March 1978, while operating the system at a flow rate of 1800 cfm i 10% through the makeup filter and 3000 cfm i 10% through the recirculation filter.

2. 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 Guide 1.52, Revision 2, March 1978, shows a methyl iodide penetration of less than 1,0% '

when tested at-a temperature of 30'C and at a relative humidity I of 70% in accordance with ASTM D38031979 with a 2 inch bed for I the emergency makeup filter train and a 4 inch bed for the I emergency recirculation air filter train; and l

3. Verifying a system flow rate of 3000 cfm i 10% during system operation when tested in accordance with ANSI N510 1900.

.d. 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 ,

within 31 days after removal that a laboratory analysis of a representative carbon sample obtained-in accordance with Regulatory.

l- Position C.6.b of Regulatory Guide 1.52, Revision 2, March 1978, shows

!- a methyl iodide penetration of less than 1.0% when tested at a temperature of 30*C and at a relative humidity of 70% in accordance  :

with ASTM 03803-1919 with a 2 inch bed for the emergency makeup air filter train and a 4-inch bed for the emergency recirculation air

_ filter train.  !

FERMI - UNIT 2 3/4 7-9 Amendment No. //, //,

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