ML20101H039

Proposed Tech Specs Re Charcoal Testing Stds for Control Room Emergency Filtration Sys & Standby Gas Treatment Sys

ML20101H039
Person / Time
Site:	Fermi
Issue date:	03/25/1996
From:	DETROIT EDISON CO.
To:
Shared Package
ML20101H029	List: ML20101H039 NRC-96-0003, Application for Amend to License NPF-43,modifying Charcoal Testing Stds for Control Room Emergency Filtration Sys & Standby Gas Treatment Sys
References
NUDOCS 9603290074
Download: ML20101H039 (2)

Text

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9 CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) b.

At least once per 18 months or (1) after any. structural maintenance on the HEPA filter 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 i

of less than 0.05% and uses the test procedure guidance in Regulatory Positions C.5.a, C.5.c, and C.5.d of Regulatory Guide 1.52, Revision 2, March 1978, and the system flow rate is 3800 cfm i 10%.

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 I

penetration of less then 0.100% when tested at a temperature of 30*C and at a relative humidity of 70% in accordance with ASTM D3803-1989 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 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 0.100%

when tested at a temperature of 30*C and at a relative humidity of 70% in accordance with ASTM D3803-1989 with a 6 inch bed, 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 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.

3.

Verifying that the heaters dissipate at least 24 kW when tested in accordance with ANSI N510-1980.

4.

Verifying that the filter cooling bypass dampers can be

~

remote manually opened and the fan can be remote manually started.

9603290074 960325 PDR ADOCK 05000341 P

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

t.

l PLANT SYSTEMS SURVEILLANCE RE0VIREMENTS 4.7.2.1 The control room emergency filtration system shall be demonstrated OPERABLE:

At least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by verifying'that the control room air l

a.

temperature is less than or equal to 95 F.

i 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 j

the HEPA filters and charcoal adsorbers.

i 2.

Verifying flow through the HEPA filters and charcoal adsorbers 4

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 associated emergency makeup i

inlet air heater OPERABLE. The subsystem used to establish the 2-10 hours of flow through the HEPA filters and charcoal adsorbers shall be staggered such that each subsystem is j

utilized at least once per 62 days.

i c.

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

i i

1.

Verifying that the system satisfies the in-place penetration i

testing acceptance criteria of less than 1.0% and uses the test i

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

the makeup filter and 3000 cfm i 10% through the recirculation filter.

l 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 4

of less than 1.0% when tested at a temperature of 30*C and at a 1

relative humidity of 70% in accordance with ASTM D3803-1989 with a 2 inch bed for the emergency makeup filter train; and a j

4 inch bed for the emergency recirculation air filter train.

3.

Verifying a system flow rate of 3000 cfm i 10% during system operation when tested in accordance with ANSI N510-1980.

i 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 1

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, j

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 D3803-1989 with a 2 inch bed for the emergency makeup air filter train; and a 4 inch bed for the emergency recirculation air i

filter train.

l FERMI - UNIT 2 3/4 7-9 Amendment No. SJ, SS, i

J