ML19318C086

in Place Testing of Hepa Filters & Iodine Adsorbers, Effective 750321

ML19318C086
Person / Time
Site:	Palisades
Issue date:	03/11/1975
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18045A283	List: ML18045A282 ML19318C076 ML19318C086
References
NCS-375, NUDOCS 8006300530
Download: ML19318C086 (12)

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- PROCEDURE , -

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AND IODINE AD30RBERS ' '

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MARCH 11, 1975

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NUCLEAR CONTAINMENT SYSTEMS, INC.

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.. COLUMBUS, 01110 43219 REVIEWED BY ~/' .-/t IN-PLACE TESTING -

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'f El'FECTIVE DATE 3121/75 d,. ,

APPROVED BY h Y g e,t. J REVISION NO.t 8/22/75 I

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. S .., NUCI. EAR COMTAIMIENT SYSTEMS, INC.

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SCOPE

1. 0 This procedure covers the in-placing testing of the liigh Ef ficiency '

Particulate Air (llE?A) filters and Iodine Adsorber filters. . .

s STANDARD ,

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2. 0 This procedure complies with ORN(,-NSIC-65, " Design, Cons t ruc tion,.

> and Testing of IIish-Ef ficiency Air Filtration Systems for Nuclear

• Applications" and ANSI N510, " Testing of Nuclear Air C1 caning '

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Systems", and in accord with ANSI 101/1 and Regulatory Guide 1.52.

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VISUAL INSPECTION A' - ..a .

3.1 A visual inspection of the components or subsystems to be tested,.

\_. their holding devices, gaskets, housing, and all components shall

{ ,s cy , he made before any leak test. - ,-

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3. 2 Complete a visual report, NCS Form No. 1 attached to this NCS-375 ,.

pr,ocedure, page 6.

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EQUIPMENT & SYSTEM TESTS

.4.1 Testing of IIEPA Filter Banks.

Perform the following steps on the high efficiency filter systems listed below and attach a completed test report for each filter .m -

system to this procedure. ,

4.1.1 ~ Establish ai[ flow through the' filter being tested. Measure and .

record the resistance across the filter bank. .

4.1.2 Connect the penetrometer sampling line to upstream sampling port .

and calibrate it against its built-in standard in accordance with t,he manufacturer's instruction.

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4.1.3 For an' acceptance test of a new system, check the background dust concentration upstream and dounstream of the filters; the bdck-

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- ground dust concentration shall be Icss than 257. of the expected aerosol concentration during the test. .r -

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4.1.4 Connect' the DOP generator to the injection port.

1 Start the injec- -

tion and adjust the generator as necessary.

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) 4.1.5 . Connect the penetrometer to the upstream sample point, allow it to stabilize, and adjust it to read 507. or higher on the lowest sen-sitivity . scale, readjusting the DOP generator as necessary. Record 7

the upstream reading. It may prove in larger systems a lower or 1f i

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'different scale reading is necessary to establish an upstream reading.

T. 4.1.6 Connect the sampling line to the douastream sampic point, allow 1%. the photometer to stabilize, and record the downstream reading. ,

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l Nb . 4.1.7 Repeat steps 5 and 6 and record the new readings if different. 'If if significant dif ferences occur, recheck until the readings remain ' +

constant within about +57.. Use the final constant readings for cal-

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culating the Icakasc. -

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4.1.8 Calculate the leakage from the equation: ~' K 1 (f-4 l

& 7. Leahage where L = 100 Cd '

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NJ O% .. u t ta 4.  ;'ve. ant Icahage 5 N DE bdhf. kf7; /? ?.'Odm - dounstream cunpentration; from photometer reading j

if ntrati n; fr m ph t meter reading CC up e lw 4.1.9 If the Icah'a'ge'-in-3cca.ter than t to specified value of Section 5.0,

.U'- scan the downstream faceTEirc ank as follous:

a. Connect a sampic line to downstream sampic port and adjust the

, . .g penetrometer to zero uhen set to the most sensitive scale, y^

N" - b. ' Disconnect .the sampic line from the downstream sample port and

attach a scanning probe. Traverse the downstream side of bank l .j..x.- ,'at a rate of about 10ft/ min. with the probe held about 1 to 1 1/2

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a inches from the section to be checked. It is reco.wacnded that the seal between the counting frame and the housing be scanned '

first; then the peripheries of the individual filters, and .

finally the cores of the individual filters. .

c. A Icak is indicated by a sustained and reporducible deficction of the meter needic uhen the probe is held at the point in question .

on one scale division or more. .

d. Mark the indicated Icaks. - Af tpr necessary repairs or filter .

replacemen,t, rctest the system in accordance with Steps 1 thru 8. .

4.1.10 If the llEPA filter system contains more that one bank of filters, each bank must be tested individually. Complete a separate test report for t.

'. each bank. ,- ~ .

- 4.1.11 Close system after testing. ' .

a. Disconnect all sample lines.

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b. Seal all injection and sample ports. .

'} c. ' Notify designated plant personnel that test is completed and system '

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may be put in normal operation.

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! 4.1.12 Complete a t'est report, for each HEPA bank on NCS Form No. 2, attached .

to this procedure page 7. -

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'4. 2 Testing of Iodine Adsorber Banks ,

Perform the following steps on each iodine adsorber bank listed' below and attach a completed test report for each, bank to this i procedure.

4.2.1 Each iodine adsorber shall be inspected individually for any -

[ visibic damage prior to testing.

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• 4.2.2 Establish air flow through the bank.

T l 4.2.3 Conhect the sample lines to upstream and downstream sample points, establish detcetor operating conditions used in their calibration, establish . upstream dilution-air rat o to produce an upstream con-centration at the tracer gas detector which is within the linear

)J response range.

4.2.4 Take upstrena background samples and downstream background sampics ,

{g ,(5 minimum for noncontinuous detectors). If these show no back- .

ground contaminants that might interfere with the test results,

continue with the test. If downstream interference;is too great to .

1 obtain a base line, purge the bank at rated system air flow for 8

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to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, or change tracer gas.

! 4.2.5 Estimate the tracer gas transit time from the generator on through ,

, i the injection port and system to the detector. Start the injection and after the estimated transit time, monitor the upstream concen-7 tration. The time when the initial tracer gas is detected is des-j ignated as time zero tracer gas R-11.

.-* 4.2.6 Calculate the Icakage for cach time interval from the equation:

% Leakage Where L = 100 gd_

' with L = % Icakage Cu r- "

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Cd = Downstream concentration I Cu = Upstream concentration W' Plot penetration vs. time and extrapolate curve to time zero. . . .

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If the leakage obtained from step 6 is greater than the value

[. 4.2.7 specified in section 5.0 of this procedure, locate and repair any ,

,. Icaks, then retest. _

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l L4.2.8 Close system after testing. . .

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, a. Disconnect all sampic lines.

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'l b. Scal all injection and sampic ports.

1,N c. Notify designated plant personnel that tent is completed and -

system may be put in normal operatLon.

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4.2.9 Conplete a test report for cach adsorber bank, on NCS Form ho. 3,

(/ attached to this procedure, page 8. '

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CONTR0!.gD COP 1.  ;

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ACCEPTANCE CRITERIA 5.1 Each IIEPA filter bank, except for those specified in step 5.3, shall have a miximum Icakage of 0.057. (cf ficiency of 99.957.) or as specified by the Contractor, based on the actual number of ,particules that pen-ctrate the filter when using the polydisperse acrosol, gen'erated from a liquid DOP having a particle diameter of 0.75 + 0.50 micron. ,

5.2 Each iodine adsorber bank si'all have an in-place maximum leakage of 1.07. (ef ficiency of 99.0%), or #a s specified by the Co tractor, based on the differential zero time concentration of the upstream and down-

. stream sampics. It is understood that the test shous only acchanical i- Icak and does not- represent actual clemental iodine of methyl iodide ,

removal efficiency. , ,

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-5. 3 The Sample Rack filters and Fume Hood filters shall have a masimum Icakage of 57. (efficiency of 95%) as specified by the DOP test in

. Step 4.1.

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NCS FORM NO. 1 Rev. O

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VISUAL INSPECTION OF FILTER SYSTEM .

CUSTOMER Purchase Order No.

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. LOCATION -

SYSTEM

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' ' NUMBER OF FILTERS .

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'. FILTER TYPE 8

. DATE OF INSPECTION .

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! INSPECTED BY ,

1 NUCLEAR CONTAINMENT SYSTEMS, Ii;CORPORATED

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' CHECK LIST FOR VISUAL. INSPECTION ,

I;p7 ' Mounting Frames '

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,/ / a. Continuout seal wcld bett cen nembers 'of frcme and between frama _-

'and housing. . ,

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M /; .. / / b. S tructural rigidity. -

I" '/ / c. Squareness of medoers, flatness and condition of component seating

, , ,f4 surfaces.

/ / 'd. Damage to frames.

Filter Clamping Devices or_I!oltq

,_ '/_/ a. Proper adjust = cat (30 to 807, gasket compression all around)

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/ / . b. Suf ficient number of adequate size to produce 50 to 807. .

gasket compression.

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/ / c. Individual clamping of filter (adsorber) cells.

/ / d. Proper condition of clamping devices (eg., .all nuts in place and tighteneC.n ~

/ / e. Adequate cicarances between filter (adsorber) cicmonts to tighten clamping devices op all sides.

/ / f. Full penetration and freedom from cracks in ucids of clamping .

devices. . .

. HEPA Filters .

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f11'ter media (tears, cracks etc. - some damage to

/ / a. Damage tt separ- ; prs is permissible), case, case corners, on both - N face's '

j of filters. ~

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/ / b. Damage to or linpre; '- -S t-ing of gaskets. ,

' Burns of media or case from cutting or, welding on both faces l / / c.

. of filters. ,

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/ / d. Exces'sive dirt loading (check gage shouing pressure drop across

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filters). .

Prefilters

! , / / a. Damage to media, case, or gaskets.

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- v {. .m/  ; ,. n. Damage to cells, includLng burn.3 from welding or cutting opera- -

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i. tions in housing.

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/'ceb Condition of clamping devices. .

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./ \ . $F,. ,.Co,n .; ition of gaskets. .

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w..s s J/ / a. ti quift ,{op visual inspection of hou:ing nad cor.poacnts.

'.'_ / / b. All je' s lit (replace if out). j

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/ '/ c. Penetration of mounting frame by power or control conduits.

/ / d, Vapor-tight globe, guard to protect globe from physical damage.

.x Housing .

, / / .t . Adequate ' space for personnel and equipment for maintenance, .

testing.

$' / / b. Reasonabic access to housidg.

/ / c. Space adjacent to housing amenable to isolation as a contan-ination zone, adequate space for temporary storage of clean p{ ,

.and contaminated filters during filter change. -

d. Doors of rigid construction with adequate seal between door

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and casing; doors opening outward on negative-pressure housings.

A I / ./ e. . Adequate latches on doors, with provision for opening from -

1 inside and outside of housing and provision for locking.

Adequate sills. '

z- Adequate structural rigidity to resist undue ficxure - rein-f / / f.

forcing members on ou. side, preferably.

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/ / g. Acces's to upper tiers with permanent service platform at approx-lla imately the 6-foot Icyc1 - adequate, permanently installed , ,

. ladders.

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'I / / 'h. Adequate cicarances between banks of components, with door on each side of each bank. .

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/ / i. No back-to-back banks of. components. .

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.. F / / j. Proper location of tracer injection and sample ports, k / / k. Adequate guards on fans located inside of housing. -

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- ilousekacping in and around housing.

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/ / m. Condition of flexibic connection between housing.and fan external

=- to housing.

4

/ / n. Fan-shaft seal.

[~ / / o. Accquate dampers to prevent intake of air from adjacent housing 4

.or pienen during test, and to prevent bypassing of systca. ,

/ / p. Freedom from corridors, plenums, conduits, cicctrical, connections, plumbing, drains or other conditions that could result in bypassing

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, of the system, cany of which are not immediately apparent.

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-Dampers

/ / a. Damage to or distortion of frame or. blades.

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/ / b'. . Bent pivot pins, operator.

/ / c. Missing seats ox-blado edging. l

/ /. d. Condition of resilient seats or cdging.

Drains

/ / a. Each section has a drain, y;; ,

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/ / b. Shut-off va'1ves for cach drain.

L2' / / c. No two sections with common pipe connection. ,

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/ / d. All drains closed during in-place testing of filter ban'ks.

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NCS FORM NO. 2 Rev. 1 ,

PARTICULATE FILTER IN-PLACE LEAK TEST REPORT CUSTOMER Purchase Order No ,

LOCATION SYSTFlt -

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NIDIBER OF FILTERS

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. AP llEFA FILTERS 1

.I, i FILTER TYPE i DATE OF TEST - -

V'lf Q  % LEAKAGE  % EFFICIENCY (DOP AEROSOL)

TEST RESULT .

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REMARKS -

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' TEST PEREORMED BY _ _ _ _ _ .

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_g,- NUCl. EAR CONTAIN> TENT SYSTEMS, TNCORPORATED

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NCS FOPJi No. 3 REV. 1 IN-PI. ACE -

CilARCOAL ADSORBER FILTER I.EAK TEST REPORT ,

CUSTOlfER Purchase Order No LOCATION

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NUMBER OF FILTERS ,

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FILTER TYP'E , .

DATE OF TEST

, TEST RESUf.T .% LEAKAGE  % EFFICIENCY R$ MARKS

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