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) | |
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- PROCEDURE , -
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NUCLEAR CONTAINMENT SYSTEMS, INC.
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REVIEWED BY ~/' .-/t IN-PLACE TESTING - _
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'f El'FECTIVE DATE 3121/75
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d,. , APPROVED BY h Y g e,t. J REVISION NO.t 8/22/75 I _
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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. . .
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- 2. 0 This procedure complies with ORN(,-NSIC-65, " Design, Cons t ruc tion,.
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> and Testing of IIish-Ef ficiency Air Filtration Systems for Nuclear
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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,.
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\_. their holding devices, gaskets, housing, and all components shall
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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.
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Perform the following steps on the high efficiency filter systems listed below and attach a completed test report for each filter .m -
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system to this procedure. ,
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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
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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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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
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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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N DE bdhf. kf7; /? ?.'Odm - dounstream cunpentration; from photometer 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:
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- 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. .
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- 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. .
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- d. Mark the indicated Icaks. - Af tpr necessary repairs or filter .
replacemen,t, rctest the system in accordance with Steps 1 thru 8. .
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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.
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- 4.1.11 Close system after testing. ' .
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- b. Seal all injection and sample ports. .
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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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; '4. 2 Testing of Iodine Adsorber Banks ,
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- Perform the following steps on each iodine adsorber bank listed' below and attach a completed test report for each, bank to this i procedure.
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4.2.1 Each iodine adsorber shall be inspected individually for any -
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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,
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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
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4.2.4 Take upstrena background samples and downstream background sampics , {g ,(5 minimum for noncontinuous detectors). If these show no back- .
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ground contaminants that might interfere with the test results,
; continue with the test. If downstream interference;is too great to .
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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.
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.-* 4.2.6 Calculate the Icakage for cach time interval from the equation:
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% 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
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[. 4.2.7 specified in section 5.0 of this procedure, locate and repair any ,
,. Icaks, then retest. _
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- 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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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. ,
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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 ,
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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
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I;p7 ' Mounting Frames '
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,/ / a. Continuout seal wcld bett cen nembers 'of frcme and between frama _-
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Filter Clamping Devices or_I!oltq
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gasket compression.
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/ / d. Proper condition of clamping devices (eg., .all nuts in place and tighteneC.n ~
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/ / f. Full penetration and freedom from cracks in ucids of clamping .
devices. . .
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f11'ter media (tears, cracks etc. - some damage to
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filters). .
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Prefilters
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Housing .
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, / / .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
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.and contaminated filters during filter change. -
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- 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.
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Adequate sills. '
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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 , ,
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. 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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/ / m. Condition of flexibic connection between housing.and fan external
=- to housing.
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[~ / / o. Accquate dampers to prevent intake of air from adjacent housing 4
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.or pienen during test, and to prevent bypassing of systca. ,
/ / p. Freedom from corridors, plenums, conduits, cicctrical, connections,
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plumbing, drains or other conditions that could result in bypassing
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Drains
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PARTICULATE FILTER IN-PLACE LEAK TEST REPORT
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CUSTOMER Purchase Order No ,
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LOCATION
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NIDIBER OF FILTERS
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