ML17264A206

Rev 3 to Procedure PT-47.5, Containment Fan Recirculation Unit - HEPA Filtration Sys Efficiency Test.

ML17264A206
Person / Time
Site:	Ginna
Issue date:	02/26/1992
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A201	List: ML17264A200 ML17264A202 ML17264A203 ML17264A204 ML17264A205 ML17264A206 ML17264A207 ML17264A208
References
PT-47.5, NUDOCS 9510260345
Download: ML17264A206 (10)

Text

ROCHESTER GAS AND ELECTRXC CORPORATION GXNNA STATION CONTROLLED COPY NUMBER PROCEDURE NO. PT-47.5 REV. NO.

CONTAINMENT FAN RECIRCULATION UNIT HEPA FILTRATION SYSTEM EFFICIENCY TEST TECHNICAL REVXEW PORC REVIEW DATE I

PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVXEWED BY:

GINYiA STATION THXS PROCEDURE CONTAINS, 9 PAGES START:

'3ATE COMPLETED:

(~

'ATE TIME'5102b0345 951018 PDR ADOCK 05000244 P PDR

PT-47 5 1 PT 47.5 CONTAINMENT FAN RECIRCULATION UNIT HEPA FILTRATION SYSTEM EFFICIENCY TEST

1.0 PURPOSE

To provide test steps for surveillance aerosol leak testing of the installed <<HEpA<< filter bank to ensure that there are no leaks greater than that allowed by system acceptance criteria.

2.0 TEST RE UIREMENTS:

2.1 This test shall be performed every 18 months or following painting, fire, or chemical release, in the area communicating with the air handling unit and shall have the following conditions demonstrated:

2.1.1 Pressure drop across the <<HEPA<< filter bank is < 3<<

H 0 at design flow rate, (+ 104).

2. 1.2 In place thermally generated <<DOP<< testing. of the

<<HEPA<< filters shall show > 994 removal efficiency.

2.2 Test shall be performed after each complete or partial replacement of the <<HEPA<< filter bank or after any structural maintenance performed on the hepa mounting frames or housing.

2 ' Visual inspection of <<HEPA<< filter assemblies for damage and for freedom of dust accumulation, shall be performed.

3.0 REFERENCES

3.1 Plant Tech. Specs. Section 4.5.2.3 inclusive.

3.2 ANSI/ASME N510-1980 (Testing 'of Nuclear Air Cleaning Systems).

3.3 NUCON Vendor.

3.4 RG&E Ventilation System Flow Diagram f33013-1863.

3.5 Previously procedure PT-26 (1987).

3.6 A-1102, Qualification of Test Personnel.

PT-47.5:2 3.7 A-1603.1, Work Request/Trouble Report Initiation.

3.8 A-805, Control of Consumable Materials at Ginna Station procedure.

4.0 INITIAL CONDITIONS:

4.1 Vendor documentation required by the applicable purchase order has been submitted to QC Dept. and found acceptable prior to start of work.

QC 4.2 Ensure an A-52.4 has been initiated for the unit to be tempted, or the plant is in Cold Shutdown with Tavg 200 F.

4.3 RGGE test personnel are qualified in accordance with A-1102.

4.'4 Notify Shift Supervisor and Head Control Operator at start of test.

4.5 When mass air flow thru "HEPA" bank(s) has been determined, log on applicable vendor's "IN-TEST" data sheet(s).

4.6 This procedure is divided into the following sections.

Initial which section(s) apply and mark remainder N/A.

4 ~ 6~1 Hepa Filter Bank Visual Inspection (Section 6.2).

4.6.2 Hepa Filter Bank Testing DOP (Section 6.3).

4.6.3 Hepa Filter Bank Removal and Replacement (Section 6. 4) .

PT-47.5:3 4 ~7 Prepare test tags for the following:

POSITION RE UIRED:

POSITION PRIOR "AS REQUIRED <tREMOTEn TO TEST: FOR TEST" MCB EMERG. STA. MCB EMERG. STA.

4.7.1 "A" Recirc. Fan Switch:

4.7.2 "B" Recirc. Fan Switch:

4.7.3 "C" Recirc. Fan Switch:

4.7.4 "D" Recirc. Fan Switch:

4 .'8 Notify HP Dept. that system will be shutdown to facilitate entry into unit for inspection .and test preparation.

4.9 SWP has been issued.

4. 10 If a submit discrepancy a WR/TR requiring maintenance to correct the problem.

is found, 4.11 Notify QC Dept. prior to start of test.

4. 12 Notify Chemical Control to ensure "Ginna Station Consumable Material Labels" are available to be posted on all chemical containers used for this test.

4.12.1 A Restricted Use Permit has been issued for the listed products:

PRODUCT: ~PERMIT 4 ~ 12. 1. 1 DXOCTYL PHTHALATE DOP 90:173P 5.0 PRECAUTIONS Radiation protection practices

'.1 will be observed at all times.

PT-47.5:4 5.2 Normal company work safety practices will be observed at all times.

5.3 Notify the Health Physics Section that DOP will be used to test the recirculation unit Hepa Filters and a strong organic odor may be noticed in the areas affected by this system.

5.4 Proper sequential implementation of each process in this procedure, as approved, is necessary to ensure adherence to A-805, Control of Consumable Materials, at Ginna Station.

6.0 INSTRUCTIONS

NOTE: These instructions are common for all four hepa banks and will be repeated when testing each individual unit. Steps may be marked N/A, at this time.

if any unit is not being tested Recirc. Units "A" II B II C II D lf 6.1 Ensure associated fan is shutdown ("Pull-Stop" position) and test tag(s) are hung on fan switch(es),

before entering plenum unit (MCB and Emerg. Sta.).

6.2 HEPA FILTER BANK VISUAL INSPECTION:

6.2.1 Completely inspect Hepa filter bank installation paying particular attention to the following:

6.2.2 Defective filter cells (i.e., indication of flow through holes and separator condition).

6.2.3 Improperly installed gaskets and clamps.

6.2.4 Air communication paths between upstream and downstream plenum. (I.e., filter frame cracks, separation of mounting frame from plenum, conduit and/or pipe passage ways).

6.3 HEPA FILTER BAN ESTING-DOP:

6.3.1 Ensure the following equipment items are available:

PT-47.5:5 Recirc. Units II A II "C" lt D It DOP-Dioctyl Phthalate.

DOP Aerosol Generator (Thermally Operated).

DOP Aerosol Detector.

Connect DOp Aerosol Detector to power line outlet.

Connect sample lines from detector to upstream and downstream sample ports.

Establish air flow thru system.

Record pressure drop across (Max. Allowable < 3" H2O) filters:

NOTE If pressure drops limits, submit a are beyond allowable WR/TR to correct the problem prior to testing.

Take background aerosol measurement with detector, and if the downstream concentrations out, purge the system until an cannot be zeroed acceptable background level is reached.

Connect appropriate DOP Aerosol Generator to injection port, start injection, and adjust generator as necessary.

Connect DOP Detector to upstream sample line, allow reading to stabilize, record reading on vendor's "DOP TEST" data sheet, and disconnect sample line.

Connect DOP Detector to downstream sample line, allow reading to stabilize, record reading, and disconnect sample line.

PT-47.5:6 Recirc. Units IIA II II B II "D" 6.3.10 Repeat Step 6.3.8 to ensure that upstream concentration has remained the same, (+ 5).

6.3.11 Calculate percent efficiency and transfer data to appropriate vendor's data sheet.

EFFZCZENCY:

6.3.12 Zf a discrepancy requiring maintenance is found, due to the percent efficiency obtained being less than the allowable limits, submit. a WR/TR to correct the problem as soon as practical and retest, otherwise mark N/A.

RETEST EFFZCIENCY:

6.3. 13'emove all DOP equipment hoses from sample points.

6.3.14 Replace all pipe caps and fittings on unit.

6.4 HEPA FILTER BANK REMOVAL AND REPLACEMENT 6.4.1 Ensure instruction Step 6.1 has been performed prior to entering plenum unit.

6.4.2 Number of filter cells removed.

¹ ¹ 6.4.3 Replace filter cells removed with approved type and ensure the bank is restored to operating condition.

6.4.4 Test system utilizing appropriate test section to ensure system efficiency within allowable limits.

6.5 A copy of the vendor's test data shall be attached to this procedure.

6.6 Vendor to submit, at a future date, a complete report of test results.

6.7 'nsure all test tags have been removed and test tag log reflects so.

~ ~ ~, ~

PT-47.5:7 6.8 Notify Head Control Operator that system testing is completed and system may be restored to normal operating conditions.

COMMENTS:

COMPLETED BY (RG&E):

(VENDOR):

DATE COMPLETED:

HEAD CONTROL OPERATOR:

SHIFT SUPERVISOR:

RESULTS & TEST REVIEW: DATE

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