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)

Text

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                                                                                             - PROCEDURE                                                       ,                       -

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    ;                                                                                                   FOR

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f,.* w IN PLACE TESTING OF HEPA FILTERS . 1 4 { . AND IODINE AD30RBERS ' '

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MARCH 11, 1975

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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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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 , r, -

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. [. Q, . 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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                                                                                                                                 ^Rev.1 i

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. 2~ ' 4.1.3 For an' acceptance test of a new system, check the background dust concentration upstream and dounstream of the filters; the bdck- [

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

A r. 4.1.4 Connect' the DOP generator to the injection port. 1 Start the injec- - tion and adjust the generator as necessary. T

  )                                     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 s

                                                    '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. - M. n y 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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1.: a * . . ; ,. . ,. . 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.                                                   ,-                                                      ~             .
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 -                                     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 hours, 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-                                                                                                                           "

5 Y ~ Cd = Downstream concentration I Cu = Upstream concentration W' Plot penetration vs. time and extrapolate curve to time zero. . . . 3, . ~ 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.

4 -

       ;                        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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, q. -. _ ,;;ye  ;.. CONTR0!.gD COP 1.  ; [. .

Rev.1 ._ 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. , , f i

                                  -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. J

                  .                     LOCATION                                                        -

SYSTEM

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  '                                    ' NUMBER OF FILTERS                                                                                                       .

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                                                                       <                                                                     _             4 FLOW
  '.                                     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. -

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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)

.l (tighten if less). ,

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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 . i .

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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. ~ i -

                              / /              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
)

filters). .

  ;                                                                            .

Prefilters

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

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                               / /             b.        Excessive dirt loading.
                                                                                                                                                                                               ~

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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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                                /'*;,/ . b .3             Individual clamping.                                                                                              '

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                                       /'ceb Condition of clamping devices.                             .

c.

                               ./        \ . $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

}~'                           ./ /

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. n

                                / /     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.                                                                            .

T

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

} .

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

r. .

- ilousekacping in and around housing.

                                ./ L/      1.                                          ~
                                 / /       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;;                                                                                   ,
                                                                                                                                                                                                 ~
                                                        / /                      b.      Shut-off va'1ves for cach drain.

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

                                                                                                                                                                                                                            +
                                                         / /                      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 - 4e ' 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 . t

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                                              ' TEST PEREORMED BY                                                     _ _ _ _ _              .

3 _g,- NUCl. EAR CONTAIN> TENT SYSTEMS, TNCORPORATED {~ - DATE ,,_ , _ ,_ __ . __ I ~.

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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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                                           . FLOW AP Cl!ARCOAL ADSORBERS                                                                                                                                            ,

FILTER TYP'E , .

   ;                                           DATE OF TEST
    ,                                          TEST RESUf.T                                                      .% LEAKAGE                                            % EFFICIENCY R$ MARKS
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