242-A Evaporator HEPA Filter In-Place Leak Test (Aerosol Test) Library/… · 242-A Evaporator HEPA...

242-A Evaporator HEPA Filter In-Place Leak Test (Aerosol Test)

Type

CONTINUOUS Document No.

3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

1 of 14

Tank Farm Maintenance Procedure 242-A Evaporator

USQ # N/A-4

CHANGE HISTORY ( LAST 5 REV-MODS )

Rev-Mod Release Date Justification Summary of Changes

D-3 02/22/2018 Maintenance Request

Add Section 4.2 Performance Documents and "GHS-SDS and/or

MSDS for ATI PAO-4 (GHS-SDS and/or MSDS #065495)" to

Performance Documents. Update Aerosol Generator / Operating

Pressure Ranges for Aerosol Generators table in Section 5.5


Add Steps 2.2.3, "3-VBP-656 is performed first, if used in

conjunction with procedure 3-VBP-657".and 2.2.4,"Airflow

readings and results from 3-VPB-656 can be transcribed to 3-

VBP-657 to eliminate redundant air flow testing" to Section 2.2.


Initial and Date removed from 5.2.1, Initial and Date removed

from 5.10.1, step numbers changed to coincide with data sheet

changes. Records section upgraded to current standard.

D-0 08/27/2015 Changes from Periodic Review Page 3 Added 2.1 Definitions. Page 12 Removed Note, and Steps

5.8.2, 5.8.3, 5.8.4.

C-3 11/19/2014 CHAMPS Removal Removed reference to CHAMPS, updated records statements and

removed next periodic review date.

Table of Contents Page

1.0 PURPOSE AND SCOPE ................................................................................................................ 3

1.1 Purpose ................................................................................................................................ 3

1.2 Scope ................................................................................................................................... 3

2.0 INFORMATION............................................................................................................................. 3

2.1 Terms and Definitions......................................................................................................... 3

2.2 General Information ............................................................................................................ 3

3.0 PRECAUTIONS AND LIMITATIONS......................................................................................... 4

3.1 Personnel Safety.................................................................................................................. 4

3.2 Equipment Safety ................................................................................................................ 4

3.3 Radiation and Contamination Control ................................................................................ 4

3.4 Environmental Compliance ................................................................................................ 4

4.0 PREREQUISITES .......................................................................................................................... 5

4.1 Special Tools, Equipment, and Supplies............................................................................. 5

4.2 Performance Documents ..................................................................................................... 5

5.0 PROCEDURE ................................................................................................................................. 6


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

2 of 14

5.1 Test Equipment Preparation ................................................................................................ 6

5.2 Pre-job Survey and Visual Inspection Checklist ................................................................ 6

5.3 Differential Pressure (DP) Readings ................................................................................... 7

5.4 System Air Flow Readings ................................................................................................. 7

5.5 Aerosol Test Readings ........................................................................................................ 9

5.6 Remove Test Equipment and Restore Air System ............................................................ 11

5.7 Aerosol Penetration Calculations ...................................................................................... 11

5.8 Restoration ........................................................................................................................ 12

5.9 Acceptance Criteria ........................................................................................................... 12

5.10 Complete Field Work ........................................................................................................ 13

5.11 Review .............................................................................................................................. 14

5.12 Records ............................................................................................................................. 14


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

3 of 14

1.0 PURPOSE AND SCOPE

1.1 Purpose

This procedure provides the instructions for testing differential pressure, volumetric flow

rate, and filter penetration of air systems containing High Efficiency Particulate Air

(HEPA) filters.

1.2 Scope

1.2.1 This procedure applies to 242-A Evaporator ventilation systems containing

HEPA filters.

1.2.2 Appendices to this procedure are location specific. Changes to this procedure

may affect the appendices and must be approved by the Responsible

Engineer.

2.0 INFORMATION

2.1 Terms and Definitions

cfm - Cubic Feet per Minute

fpm - Feet Per Minute

2.2 General Information

2.2.1 Differential pressure is read from locally installed or portable calibrated

instrumentation.

2.2.2 Flow rate tests are based on 40 CFR 60.

2.2.3 3-VBP-657 is performed first, if used in conjunction with procedure

3-VBP-656.

2.2.4 Airflow readings and results from 3-VBP-657 can be transcribed to

the applicable 3-VB-656 appendix.

2.2.5 Filter penetration is determined by calculating percent penetration of an

approved challenge aerosol per ASME-N511-2007.

2.2.6 The Hanford Site Radioactive Air Emission License (FF-01) requires HEPA

filter challenge test annually (within 365 days).


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

4 of 14

3.0 PRECAUTIONS AND LIMITATIONS

3.1 Personnel Safety

3.1.1 Do not perform flow test during Evaporator Campaign (to avoid possible

ammonia hazard). Test performance is allowed during evaporator cold run.

3.2 Equipment Safety

Only Department of Energy (DOE) approved aerosols shall be used to perform this

procedure (e.g., Di-Octyl Sebacate (DOS)).

3.3 Radiation and Contamination Control

Special care should be taken to ensure contamination control when inserting and

withdrawing vent and balance test equipment.

3.4 Environmental Compliance

3.4.1 Tank farm ventilation systems and exhaust monitoring systems are regulated

under Washington State Administrative Code (WAC) chapter 246 247 and

sections of Air Operating Permit (AOP) and Radioactive Air Emission

License (FF01) to ensure compliance with these regulations. Potentially

effected ventilation systems at the 242-A Evaporator include, the building

stack # 296-A-21A and vessel vent stack # 296-A-22 systems.

3.4.2 To ensure reporting requirements are met, all unplanned outages of

ventilation, and both planned and unplanned outage of exhaust record

samplers, any problems concerning the emission control equipment (e.g.,

liquid in HEPA filter trains, wet sample filter paper, etc.) or failed HEPA

challenge testing must be immediately reported to Environmental On-Call per

the On-Call List in compliance with TFC-ESHQ-ENV_FS-C-01".


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

5 of 14

4.0 PREREQUISITES

4.1 Special Tools, Equipment, and Supplies

NOTE - Measuring and Test Equipment (M&TE) used to perform this procedure must

be within its current calibration cycle as shown on calibration label.

Vent and Balance instrumentation and equipment including:

Standard pitot tube

OR

Type “S” pitot tube

Aerosol probe

Aerosol (DOE-approved) (e.g., Di-Octyl Sebacate (DOS))

Aerosol generator

Manometer or similar airflow equipment

Photometer.

4.2 Performance Documents

GHS-SDS and/or MSDS for ATI PAO-4 (GHS-SDS and/or MSDS #065495)


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

6 of 14

5.0 PROCEDURE

NOTE - Adjusting system air flow is not permitted during this procedure.

- Figures and data sheets are located in equipment specific appendix.

- Sections 5.1 and 5.2 may be performed in any logical order or concurrently.

5.1 Test Equipment Preparation

5.1.1 RECORD equipment calibration data and aerosol type in Step 1 of

appropriate Data Sheet.

5.1.2 IF additional or replacement instrument(s) are used, RECORD calibration

data AND

EXPLAIN in Step 2 of appropriate Data Sheet.

5.1.3 ENERGIZE photometer AND

COMPLETE minimum 15-minute warm-up.

5.2 Pre-job Survey and Visual Inspection Checklist

5.2.1 PERFORM pre-job radiation and contamination survey of work area AND

COMPLETE Step 3 of appropriate Data Sheet.

NOTE - Visual inspection identifies potential ventilation system problems. No pass/fail

inspection criteria are used.

5.2.2 COMPLETE visual inspection per Data Sheet 2 Visual Inspection Checklist

AND

RECORD results in Step 4 of appropriate Data Sheet.

5.2.3 IF a potential problem is found, PERFORM the following:

5.2.3.1 DESCRIBE the potential problem(s) in Step 5 of appropriate

Data Sheet.

5.2.3.2 RECOMMEND a possible solution to the problem(s) in Step 5

of appropriate Data Sheet.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

7 of 14

5.3 Differential Pressure (DP) Readings

5.3.1 IF installed gauges are not calibrated or in proper working condition, USE

portable M&TE calibrated equipment to determine differential pressure.

5.3.2 READ pre-filter, 1st stage, and 2nd stage dP individually AND

RECORD readings in Step 6 of appropriate Data Sheet.

5.3.3 COMPARE dP readings with the specified limits AND

MARK results (PASS/FAIL) in Step 6 of appropriate Data Sheet.

5.3.4 IF readings are not within operating limits specified on data sheet,

CONTACT Facility Supervisor/FWS for authorization to proceed (Step 7 of

appropriate Data Sheet).

5.4 System Air Flow Readings

NOTE - Traverse point intervals, stack duct diameter, and duct area are specified on

Appendix Data Sheet. Traverse point intervals are measured relative to

stack/duct internal diameter (i.d.).

5.4.1 MARK pitot tube for traverse point intervals per Step 8 of appropriate Data

Sheet.

5.4.2 PERFORM a radiological contamination survey upon removal of any caps,

plugs, etc., on test ports.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

8 of 14

5.4 System Air Flow Readings (Cont.)

5.4.3 READ velocity pressure (VP) at air flow test port AND

RECORD values in Step 8 of appropriate Data Sheet,

OR

IF a direct reading instrument is being used to measure flow (i.e., Hot Wire

Anemometer), RECORD the reading in the velocity column of appropriate

Data Sheet, Step 8 AND

GO TO Step 5.4.5.

5.4.4 CALCULATE velocity (fpm) for each traverse point AND

RECORD values in Step 8 of appropriate Data Sheet.

fpm = 4005 VP

5.4.5 DETERMINE total fpm by adding velocity (fpm) entries AND


5.4.6 DETERMINE average fpm by dividing total fpm by number of velocity

(fpm) entries AND


5.4.7 IF using the standard Pitot Tube, CALCULATE air flow (cfm) AND


CFM = Average FPM x Duct Area Sq Ft

5.4.8 IF using type “S” Pitot Tube, CALCULATE air flow (cfm) AND


CFM = Average fpm (avg) x Type-S Pitot coefficient of 0.84 x Duct Area Sq Ft.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

9 of 14

5.5 Aerosol Test Readings

NOTE - The following are operating pressures for the Aerosol Generators.

AEROSOL GENERATOR OPERATING PRESSURE

TDA-4B,TDA-6C,TDA-6D 18 to 22 psi

TDA-5B,TDA-5C 45 to 55 psi

TDA-6A N/A

5.5.1 IF system is equipped with test levers, PLACE levers in test position.

5.5.2 PERFORM a radiological contamination survey upon removal of any caps,

plugs, etc., on test ports.

5.5.3 RECORD aerosol generator pressure in Step 12 of appropriate Data Sheet.

5.5.4 ESTABLISH Aerosol Baseline Concentration (Cb) as follows:

5.5.4.1 INJECT aerosol into baseline injection port.

5.5.4.2 READ concentration at baseline sample port AND

RECORD in Step 13 of appropriate Data Sheet.

5.5.4.3 STOP injecting Aerosol.

5.5.4.4 MULTIPLY reading by photometer scale setting to determine

baseline concentration (Cb) AND



Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

10 of 14

5.5 Aerosol Test Readings (Cont.)

5.5.5 TEST Baseline and Penetration Background Concentrations (Bb, Bp) as

follows:

NOTE - Aerosol should be allowed to dissipate before taking background

readings.

5.5.5.1 ALLOW Aerosol to dissipate.

5.5.5.2 READ concentration at baseline sample port AND


5.5.5.3 READ concentration at penetration sample port AND


5.5.5.4 MULTIPLY readings by respective photometer scale settings to

determine background concentrations (Bb, Bp) AND


5.5.6 TEST Aerosol Penetration Concentration (Cp) as follows:

5.5.6.1 INJECT aerosol into injection port.

5.5.6.2 READ concentration at penetration sample port AND


5.5.6.3 STOP injecting Aerosol.

5.5.6.4 MULTIPLY reading by photometer scale setting to determine

downstream penetration concentration (Cp) AND


5.5.7 REPEAT Steps 5.5.3 through 5.5.6 for a total of three trials.

5.5.8 IF more filters are to be tested, REPEAT Steps 5.5.2 through 5.5.7 for each

filter to be tested.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

11 of 14

5.6 Remove Test Equipment and Restore Air System

5.6.1 WIPE test equipment upon removal.

5.6.2 SURVEY equipment upon removal.

5.6.3 INSTALL all caps, plugs, or instrumentation on test ports AND

RETURN any test levers to operating configuration.

5.6.4 SURVEY all equipment before removal from work area.

5.7 Aerosol Penetration Calculations

5.7.1 CALCULATE percent penetration (P) for each trial, using the formula

below AND


b

p

C

CP 100

5.7.2 MARK results for each trial (Pass or Fail) in Step 17 of appropriate Data

Sheet as follows.

5.7.2.1 IF aerosol penetration is less than 0.05%, MARK Pass for that

trial.

5.7.2.2 IF aerosol penetration is equal to or greater than 0.05%, MARK

Fail for that trial.

5.7.3 IF any calculated penetration (P) is equal to or greater than 0.05%, NOTIFY

Operations Manager immediately AND

Facility Supervisor/FWS SIGN in Step 18 of appropriate Data Sheet.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

12 of 14

5.8 Restoration

5.8.1 IF more filter trains are to be tested, REPEAT Section 5.1 through 5.8 for

those trains.

5.9 Acceptance Criteria

System performance is acceptable when percent penetration (P) for all three trials is less

than 0.05%.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

13 of 14

5.10 Complete Field Work

5.10.1 PERFORM post-job radiation and contamination survey of work area to

verify radiological conditions are at pre-job levels or better AND

COMPLETE Steps 19 and 20 of appropriate Data Sheet.

5.10.2 Facility Supervisor/FWS ENSURE caps, plugs, and instrumentation, and test

levers are restored to original configuration AND

COMPLETE Step 21 of appropriate Data Sheet.

5.10.3 IF no deficiencies exist, ENTER N/A in Step 22 of appropriate Data Sheet

AND

GO TO Step 5.10.6.

5.10.4 Facility Supervisor/FWS RECORD in Step 22 of appropriate Data Sheet

work request numbers generated to correct any deficiencies identified by this

procedure.

5.10.5 Facility Supervisor/FWS NOTIFY Engineering of deficiencies AND

DOCUMENT in Step 22 of appropriate Data Sheet.

5.10.6 DOCUMENT RSR number in Step 23 of appropriate Data Sheet

5.10.7 WHEN field work is complete, INFORM Operations and Maintenance.

5.10.8 FORWARD Work Package to Vent and Balance.


Type


3-VBP-656 Rev/Mod

D-3 Release Date

02/22/2018 Page

14 of 14

5.11 Review

5.11.1 Vent and Balance reviewer CHECK data sheets for completeness and

legibility.

5.11.2 Vent and Balance reviewer COMPLETE Step 24 of appropriate Data Sheet

(print name, sign, and date).

5.11.3 FORWARD work package to Planner.

5.11.4 Planner PERFORM the following:

5.11.4.1 FORWARD copy of appendix to Environmental Compliance

(EC).

5.11.4.2 FORWARD copy of appendix to the Responsible Engineer.

5.12 Records

This procedure is performed within a work package, as such, the procedure in its entirety will be

maintained as a record per the Work Control process.

The record custodian identified in the company-level Records Inventory and Disposition

Schedule (RIDS) is responsible for record retention in accordance with

TFC-BSM-IRM_DC-C-02.

Date post:	22-Jun-2020
Category:	Documents
Upload:	others
View:	2 times
Download:	0 times