ML19318C086
ML19318C086 | |
Person / Time | |
---|---|
Site: | Palisades ![]() |
Issue date: | 03/11/1975 |
From: | CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
To: | |
Shared Package | |
ML18045A283 | List: |
References | |
NCS-375, NUDOCS 8006300530 | |
Download: ML19318C086 (12) | |
Text
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- . , - .. ' . - - PROCEDURE , -
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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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NUCLEAR CONTAINMENT SYSTEMS, INC.
~ .. COLUMBUS, 01110 43219 ' - .
REVIEWED BY ~/' .-/t IN-PLACE TESTING - _
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7 ,
'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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.. '. , . . -Q s,1 ' .. . .: . ' . S .., NUCI. EAR COMTAIMIENT SYSTEMS, INC. ' . ' - +' P.O. BOX 19827 - COLUMBUS, 01110 43219 4 (614) 252-1420 g.c l s . < % ~ !; . ..
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SCOPE
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- 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.
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VISUAL INSPECTION A' - ..a .
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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. 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-
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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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r. 4.1.4 Connect' the DOP generator to the injection port. 1 Start the injec- -
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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 ' +
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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
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& 7. Leahage where L = 100 Cd ' ?: U ' * . '
NJ O% .. u t ta 4. ;'ve. ant Icahage 5
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N DE bdhf. kf7; /? ?.'Odm - dounstream cunpentration; from photometer reading
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- if ntrati n; fr m ph t meter reading
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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 - . .. ~ ' * ' - . *(f ~
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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.
? ! 4.1.12 Complete a t'est report, for each HEPA bank on NCS Form No. 2, attached .
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; to this procedure page 7. - . .
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; +. .- , - ._ .,p*. * ' - " ; '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 -
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[ visibic damage prior to testing.
- ~; * . ,
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. _ + t s:, .,- ' ~'
l L4.2.8 Close system after testing. . .
~ [J ' , a. Disconnect all sampic lines. .i? . '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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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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VISUAL INSPECTION OF FILTER SYSTEM .
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CUSTOMER Purchase Order No. J
' . . ' - . , . LOCATION - . ,
SYSTEM
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I;p7 ' Mounting Frames '
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, ' . ,/ / a. Continuout seal wcld bett cen nembers 'of frcme and between frama _- 'and housing. . , -{{-
' M /; .. / / b. S tructural rigidity. -
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I" '/ / c. Squareness of medoers, flatness and condition of component seating , , ,f4 surfaces.
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- / / 'd. Damage to frames.
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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.
~ / / 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. . .
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. HEPA Filters .
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f11'ter media (tears, cracks etc. - some damage to
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/ / a. Damage tt separ- ; prs is permissible), case, case corners, on both - N face's '
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of filters. ~
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' . , - / / b. Damage to or linpre; '- -S t-ing of gaskets. ,
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' 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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+ - 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. . .g =g g Ld3htligh \ -
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J/ / a. ti quift ,{op visual inspection of hou:ing nad cor.poacnts.
. '.'_ / / b. All je' s lit (replace if out). j ~
CONM03.ED COF5 .
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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. ? '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. .. lk. * -
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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 ,
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PARTICULATE FILTER IN-PLACE LEAK TEST REPORT
- . .
CUSTOMER Purchase Order No ,
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LOCATION
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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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NCS FOPJi No. 3 REV. 1
.
IN-PI. ACE -
,
CilARCOAL ADSORBER FILTER I.EAK TEST REPORT , .
. . . '
- CUSTOlfER Purchase Order No
.
__ ,
. . . , . -
LOCATION
~ * ' , , .- .- SYSTDI , , , . , , -
NUMBER OF FILTERS ,
- . ~ , ' ' ' . FLOW '
' . AP Cl!ARCOAL ADSORBERS ,
- -
FILTER TYP'E , .
. ; DATE OF TEST , , TEST RESUf.T .% LEAKAGE % EFFICIENCY , , - . .
R$ MARKS
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NUCI. EAR CON TAT. N.M.E. N,T., SYSTEMS,, INCORPORATED-
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