ML17264A208

Rev 3 to Procedure PT-47.11, Containment Post Accident Charcoal Filter Unit Efficiency Test.

ML17264A208
Person / Time
Site:	Ginna
Issue date:	03/09/1994
From:	ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A201	List: ML17264A200 ML17264A202 ML17264A203 ML17264A204 ML17264A205 ML17264A206 ML17264A207 ML17264A208
References
PT-47.11, NUDOCS 9510260348
Download: ML17264A208 (13)

Text

ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER PROCEDURE NO. PT-47.11 REV. NO. 3 CONTAINMENT POST ACCIDENT CHARCOAL FILTER UNIT EFFICIENCY TEST TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:

6INNA STATION THIS PROCEDURE CONTAINS 11 PAGES START:

I llME COMPLETED:

DATE TIVE'9510260348 951018 05000244 PDR P .

ADQCK

., PDR.

PT-47.11:1 PT-47.11 CONTAINNENT POST ACCIDENT CHARCOAL FILTER UNIT EFF1CIENCY TEST

1.0 PURPOSE

To provide test steps for surveillance halide leak testing of the installed "CHARCOAL" adsorber 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 after 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber system operation, since previous test, 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 "CHARCOAL" adsorber bank shall be < 3" H20 at design flow rate, (+ 104).

2 ~ 1.2

~ In-place "HALIDE" (Freon) leak testing, under normal operating conditions, shall show > 99% removal efficiency.

2. 1.3 Every 12 months, a "CHARCOAL" sample shall be removed from an adsorber cell, randomly selected from those cells with the longest in-bank residence time or "TEST CANISTER(S)" shall be removed, and sent to a laboratory for an "IODINE REMOVAL EFFICIENCY TEST".

The efficiency shall be at least 90% removal for iodine.

2 ' After each replacement of a "CHARCOAL" adsorber cell or after any structural maintenance performed on the adsorber mounting frames of the unit, the efficiency specified in step 2.1.2, shall'e demonstrated.

2.3 Visual inspection of "CHARCOAL" adsorber cell assemblies for damage and loss of charcoal shall be performed.

3.0 REFERENCES

F 1 Plant Tech. Specs. Section 4.5.2.3 inclusive.

PT-47.11'2 3.2 ANSI/ASME N510-1980 (Testing of Nuclear Cleaning Systems).

3.3 NUCON Vendor.

3.4 RGGE Ventilation System Flow Diagram f33013-1863.

3.5 Previously procedure PT-29.3 (1987).

.6 A-1102, Qualification of Test Personnel.

3 ' A-1603.1, Work Request/Trouble Report Initiation.

3.8 PT-38.1, Visual Inspection of Charcoal Filter Tray Assemblies .

3.9 A-1408, Independent Verification Procedure.

3:10 A-805, Control of Consumable Materials at, Ginna Station Procedure.

4.0 INITIAL CONDITIONS:

NOTE If preparatory to vendor arrival, work will be performed mark step 4.1 N/A.

prior 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 Plant shall be at cold shutdown.

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

4 ' Visual inspection of "CHARCOAL" adsorber cell assemblies shall be completed per PT-38.1.

4.5 Notify Shift Supervisor and Head Control Operator at start and upon completion of test.

4.6 When mass air flow thru "CHARCOAL" bank has been determined, log on applicable vendor's "IN-TEST" data sheet.

PT-47.11:3 4.7 This procedure is divided into the following sections.

Initial which section(s) apply and mar'k remainder N/A.

4.7 ~ 1 Removal of "CHARCOAL" Adsorber Cell or Test Canister for Iodine Removal Efficiency Testing (Section 6.2).

4.7.2 Charcoal Adsorber Bank Testing Halide (Section 6.3).

4.7.3 Filter Bank Removal and Replacement (Section 6.4).

4.8 Prepare test tags for the following:

POSITION PRIOR POSITION REQUIRED TO TEST FOR TEST:

4.8.1 1-A Contmnt. Recirc. Fan Unit Switch:

!'s Required" 4.8.2 1-B Contmnt. Recirc. Fan Unit Switch:

"As Required" 4.8.3 1-C Contmnt'. Recirc. Fan Unit Switch:

"As Required" 4.8.4 1-D Contmnt. Recirc. Fan Unit Switch:

"As Required" 4.9 Notify HP Dept. that system will be shutdown to facilitate entry into unit for inspection and test preparation.

4. 10 SWP has been issued.

4 '1 If a submit discrepancy a WR/TR requiring maintenance to correct the problem.

is found,

4. 12 The "A" and "C" Containment Recirculation Fans are available for operation and their air flow paths may be aligned to their respective post accident charcoal filter bank as desired.

4. 13 If only one unit is to be tested mark other one N/A.

O~

PT-47.11:4

4. 14 Only the fan unit being tested may be in operation with ALL OTHER UNITS in "PULL STOP" condition.

4. 15 Notify QC Dept. prior to start of test.

4. 16 Notify Chemical Control to ensure "Ginna Station Consumable Material Labels" are available to be posted on all chemical containers used for this test.

4.16.1 A Restricted Used Permit has been issued for the listed products:

PRODUCT ~PERMIT 4 '6.1.1 GERETRON HALIDE R-11 90:188P

5.0 PRECAUTIONS

5.1 Radiation protection practices will be observed at all times.

5.2 Normal company work safety practices will be observed.

5<<3 Notify HP Section that Halide will be used to test the charcoal units 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

P A'NIT: "A fl B II 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).

"A" CV Recirc. Fan "PULL-STOP" ~NA

<<C<< CV Recirc. Pan "PULL-STOP" ~N A

PT-47.11:5 6.2 REMOVAL OF CHARCOAL ADSORBER CELL OR TEST CANISTER FOR IODINE REMOVAL EFFICIENCY TESTING:

P.A. UNIT: "A" II B II 6.2.1 Remove "CHARCOAL" adsorber cell or "TEST CANISTER(S)"

from filter bank to obtain charcoal sample for laboratory testing and replace with approved same.

Label newly installed charcoal 'cell/test canister faceplate, to reflect replacement date. I 6.2.2 Adsorber cell location. (N/A if non-applicable).

1-A P.A. Unit:

1-B P.A. Unit:

6.2.3 Test canister(s) location. (N/A if non-applicable).

1-A P.A. Unit:

1-B P.A. Unit:

6.2.4 Ensure adsorber cell or test canister(s) replaced is/are restored to operating condition.

6.3 CHARCOAL ADSORBER BANK TESTING HALIDE:

NOTE: If step N/A.

4.1 was performed, mark step 6.3.1 6.3.1 Vendor documentation required by the applicable purchase order has been submitted to QC Dept. and found acceptable prior to start of work.

QC 6.3.2 Start associated containment recirc. fan unit for charcoal bank undergoing test.

"A" Fan for "A" P.A. Bank "C" Fan for "B" P.A. Bank 6.3.3 To properly align dampers of fan unit being tested in the "POST ACCIDENT" mode, perform the following:

PT-47.11:6 P.A. UNIT: "At'tB 6.3.3.1 "A" P.A. unit ("A" CV Recirc. Fan) Press in armature relay "CF1A-L", rack RA2, Relay Room.

6.3.3.2 "B" P.A. Unit ("C" CV Recirc. Fan) Press in armature relay "CF1C-L", rack RA3, Relay Room.

6.3.4 Verify the following for the associated fan:

6.3.4.1 Normal Loop Entry Damper Closed (LED).

6 '.4.2 Charcoal Bank Inlet Damper Open (CID).

6.3.4.3 Charcoal Bank Outlet Damper Open (COD).

6.3.5 Ensure the following equipment items are available:

6~3 ~ 5.1 Halide Tracer Gas, R-11.

6.3.5.2 Halide Detector.

6.3.5.3 Halide Generator.

6.3.6 Connect Halide Detector to power supply and allow approximately 15 minutes warm up time.

6.3 ' Connect sample lines to upstream and downstream sample ports.

6.3.8 Establish flow through system.

6.3.9 Record pressure drops across filters and transfer to applicable vendor's "Halide Test" data sheets.

6.3.9.1 (Max. Allowable ( 3" H20) H20 H20 NOTE If pressure drops are beyond allowable limits, investigate and correct problem prior to testing.

6.3.10 Establish upstream and downstream sample flows and set upstream dilution air ratios if necessary, to produce an upstream concentration which is within the linear response range of the detector.

PT-47.11 7 P.A. UNIT: "A" 6.3.11 Take upstream and downstream background sample readings.

NOTE: If these readings show no background contaminants that might interfere with test results, continue with the test.

interference is indicated, purge system If with air flow until interference is reduced to an acceptable level.

6.3.12 Start injection.

6.3.13 Monitor and record upstream and doWnstream tracer gas concentrations for five minutes using applicable vendor's data sheet.

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

EFFICIENCY:

NOTE Halide concentrations are determined by averaging (4) stabilized readings previously recorded on data sheet.

6.3.15 If 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 EFFICIENCY:

6.3.16 '

Remove all sample lines from ports.

6.3.17 Replace'll pipe caps or fittings on unit.

6. 3. 18 To re-align dampers of fan unit being tested, perform the following:

6.3.18.1 "A" CV Recirc. Fan Press "RESET" button for "CF1A-L",

Rack RA2, Relay Room.

6.3.18.2 "C" CV Recirc. Fan Press "RESET" button for "CF1C-L",

RACK RA3, Relay Room.

PT-47.11:8 P.A. UNIT: 'tA II B II 6.4 FILTER BANK REMOVAL AND REPLACEMENT:

6.4. 1 Ensure instruction 6.1 has been performed prior to entering plenum unit.

6.4.2 Type filter bank removed:

6.4.2.1 CHARCOAL 6.4.3 Number of filter cells removed:

¹ 6.4.4 Replace filter cells removed with approved type, label newly installed charcoal filter faceplate to reflect replacement date and ensure the bank is restored to operating condition.

6.4.5 Test system utilizing appropriate test section to retain 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 Ensure all test tags have been removed and test tag log reflects so.

6.8 Notify Head Control Operator that system testing is completed and system may be restored to normal operating conditions.

~ ~

COMMENTS "A" Unit:

COMMENTS nBn Unit:

COMPLETED BY (RG&E):

(VENDOR):

DATE COMPLETED:

HEAD CONTROL OPERATOR:

SHIFT SUPERVISOR:

RESULTS & TEST REVIEW: DATE

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