ML20237F693

Revised TSS 15.6.14B, HEPA Filter Banks In-Place Leak Tests

ML20237F693
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	03/26/1985
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20237F603	List: ML20237F601 ML20237F636 ML20237F664 ML20237F679 ML20237F693 ML20237F727 ML20237F743
References
TSS-15.6.14B, NUDOCS 8708210541
Download: ML20237F693 (5)

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MAtDA70W1-HAND PROCEDHi HEPA FILTER BANKS IN-PLACE LEAK TESTS TSS 15.6.14B TABLE OF CONTENTS PAGE DATE REVISION SECTION TITLE 4

Table of Contents 1 MAR 2 61985 3 l A Introduction 2 MAR 2 61935 '

B Reference Documents MAR 2 61985 4 C Testing 3 4

Data Requirements 4 pu, g ,. g.-

Evaluation of Test Results Table 1: HEPA filter Systems 5 MAR 2 61985 3 Surveillance Requirements t

Date Surveillance Performed Surveillance Performed on Unit #

1 4

- +_, , w This procedure contains e pages.

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TSS 15.6.14B Rev. 3 MAR 2 61985 A. INTRODUCTION  ;

1.1 Technical Specification Surveillance Requirements l

This test has been adapted from the standard test procedure developed

- .by Farr Filter Company to be used in In-Place' Testing of their filter systems. The requirements for testing set down by the NRC have not <

changed significantly from the referenced documents used in writing .I this test, concerning the testing procedure. What has been changed !l is the frequency of testing and addition of other surveillance such !I as air flow verification. These have been covered by revisions to the Technical Specifications. ,

The In-Place Testing of HEPA Filter Banks is a leak test of the installed system and should not be confused with efficiency tests of individual filters. The test covered by this specification shall be used for acceptance testing of the air cleaning system after filter replacement, maintenance on the system, or to satisfy surveillance requirements. jl 1.1.1 At least once every 18 months, or (2) following partial or ','

complete replacement of the filter bank, or (3) after any structural maintenance of the HEPA filter housings, or (4) ;q following painting, fire or chemical release in any ventilation zone communicating with the system, surveillance i; will be performed per Table 1. l

a. Instrumentation, equipment, and procedures for the above testing shall generally conform to the recommendations ,

found in ANSI N510.

B. REFERENCE DOCUMENTS ANSI N510 - 1975,1980 Testing of Air Cleaning Systems {

1 The American Society of Mechanical Engineers i Technical Specification 4.8.B.A.4, 4.13.2.B. 4.17.1.C.&D.

Industrial Ventilation l

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~* TSS 15.6.14B Rev. 4 C. TESTING MAR 2 61935 3.1 Test Requirements 3.1.1 On-site facility requirements

a. Electrical - 110V AC - 60 Hz

b. Compressed Air 100 psig, 18 SCFM

c. Openings for smoke injection and sample removal points as 1 determined by test engineers. i 3.1.2 Test Contaminant The test contaminant shall be 00P, an abbreviation for l dicctylphthalate, synonymous with di-2-ethylhexylphtblate,  !

1 C6 Ha 'C0 2 CH2CH(C25 H )C 4 Hg)2-3.1.3 Acceptance Criteria In accordance with Table 1 3.1.4 Test Equipment Required 3.1.4.1 00P Generator: The 00P generator shall be an air-operated Laskin nozzle generator or a gas thermal generator that is capable of producing the approximate particle size distribution. The generator capacity shall be sufficient to produce reliable penetrometer reading at system penetrations as low as 0.005 per cent.

3.1.4.2 Penetrometer: The Penetrometer, essentially, is a linear readout, near-forward light scattering aerosol photometer having the following general characteristics:

1. Threshold sensitivity to permit detection of test aerosol in concentrations of at least.as low as 10-3 g per liter of air having a minimum reading at this concentration of 1.0% when set on the most sensitive scale.

2. Capability of measuring concentrations of DOP in air of at least 10-3 times the concentration required to produce full scale deflection when set on the most sensitive scale.

3. Sampling rate of 1 scfm.

4. Linear response from minimum detectable aerosol (

concentration to maximum upstream concentration.

0010T 3 0049A

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~ - *- TSS 15.6.14B Rev. 4 MAR 2 6 285

'3.2 Test Methods and Results i

3.2.1 Testing methods and procedures shall generally conform to the recommendations found in ANSI N510.

3.2.2. Test Results: .The leakage may be calculated as follows:

L = 100 x Cd Cu where L = percent leakage; Cd = downstream concentration, from photometer reading Cu = upstream concentration, from photometer reading 3.2.3 If any leakage obtained is greater than the value specified in 3.1.3, then locate leaks; repair and retest.

4. DATA REQUIREMENTS 4.1 Complete test report shall be f urnished as outlined in ANSI N510.

Air flow and AP across HEPA banks shall be included. Documentation must be provided to certify instrument calibration.

5. EVALUATION OF TEST RESULTS Tech Staff Engineer Date Tech Staff Supervisor Date 4

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