ML15203A851

Written Communication as Specified by 10 CFR 50.4(b)(1) Requesting U.S. Nuclear Regulatory Commission Approval to Amend the Technical Specifications Appended to Amended Facility License No. R-103 Pursuant to 10 CFR 50.59(c) and 10 CFR 50.90

ML15203A851
Person / Time
Site:	University of Missouri-Columbia
Issue date:	07/20/2015
From:	Univ of Missouri - Columbia
To:	Office of Nuclear Reactor Regulation
Shared Package
ML15203A883	List: ML15203A851 ML15203A855 ML15203A862 ML15203A867
References
Download: ML15203A851 (46)

Text

ATTACHMENT 1 I M ED I

ALMO 6 Operating Manual

7. Connector Pin Assignment 7.1. Device View INetwork in preparation Serial number 24V power I

supply unit Connection for traffic light / acoustic total alarm A+B Connection for traffic light / acoustic channel 1 to 6

[+Interfaces 7.2. Fuses Main fuise 2.5 AT Fuse total alarm B I AT Fuse total alarm A I AT LCD contrast control Probe connections channel 1 to 6 Fuse Probes 4.5 and 6 1 AT Fuse Probes 1.2 and 3 1 AT Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornbluthstrasse 14 a, D-01277 Dresden Page 59

ATTACHMENT 1 M F -1)

ALMO 6 Operating Manual 7.3. Connector Pin Assignment Data Transmission A The interface function (configuration) can be set on the menu (see 4.9.4):

Pin 1

2 3

4 5

6 7

USB Signal 24 Volt 5 Volt - USB USB-DM USB-DP 0 Volt -

USB Pin 1

2 3

4 5

6 7

RS-232 Signal 24 Volt RX TX Pin 1

2 3

4 5

6 7

RS-422 Signal 24 Volt RX-B RX-A TX-B TX-A GND Pin 1

2 3

4 5

6 7

RS-485 Signal 24 Volt B

A GND GND F-51

[w3 Ei]

__z ELI Socket type:

Cable connector:

Connection cable:

Binder subminiature circular connector Series 712 09-0427-90-07 Series 712 coupler connector 99-0426-00-07 Three pair-wound shielded control line AWG 26 2P x AWG 26C Page 60 Issue 05/2012 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Domblilthstrasse 14 a, D-01277 Dresden

ATTACHMENT 1 ALMO 6 Operating Manual lm_"" -

7.4. Connector Pin Assignment Data Transmission B The interface function (configuration) can be set on the menu (see 4.9.4):

Pin 1

2 3

4 5

6 7

RS-232 Signal 24 Volt 5 Volt RX TX Pin 1

2 3

RS-422 Signal 24 Volt 5 Volt RX-B Pin 1

2 3

4 5

6 RS-485 Signal 24 Volt 5 Volt 4

RX-A 5

6 7

TX-B TX-A GND B

A GND 7

GND F51 F-I F2_-

F, Socket type:

Binder subminiature circular connector Series 712 09-0427-90-07 Cable connector:

Connection cable:

Series 712 coupler connector 99-0426-00-07 Three pair-wound shielded control line AWG 26 2P (3P) x AWG 26C Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornblilthstrasse 14 a, D-0 1277 Dresden Page 61

ATTACHMENT 1 i M EV I

ALMO 6 Operating Manual 7.5. Connector Pin Assignment Alarm Output Channel 1 - 6 Pin 1

2 3

4 5

6 7

8 Signal LED light LED light LED light LED light Traffic light Traffic light Traffic light Traffic light red yellow green common red yellow green common / GND *

• If the output is switched potential-free on the menu, the common of the relay is on pin 8.

If 24 Volt is switched at the traffic light outputs, then pin 8: OVolt (ground).

4-]

/8w F]

EL E6 EL2E]

Socket type:

Cable connector:

Connection cable:

Binder subminiature circular connector Series 712 flange type socket 09-0424-90-08 Series 712 coupler connector 99-0421-00-08 LiY 8 x 0.14 I

Page 62 Issue 05/2012 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dombltithstrasse 14 a, D-0 1277 Dresden

ATTACHMENT 1 I MED I

ALMO 6 Operating Manual 7.6. Connector Pin Assignment Total Alarm Channel A and B Pin Signal 1

External quit button 2

External quit button 3

External acoustic 4

Power supply for Acoustic at potential-free 5

LED traffic light red 6

LED traffic light yellow 7

LED traffic light green 8

Traffic light common / GND *

• If the output is switched potential-free on the menu, the common of the relay is on pin 8.

If 24 Volt is switched at the traffic light outputs, then pin 8: OVolt (ground).

F41 8

L6_

w2 w

Socket type:

Cable connector:

Connection cable:

Binder subminiature circular connector Series 712 flange type socket 09-0424-90-08 Series 712 coupler connector 99-0421-00-08 LiY 8 x 0.14 Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornblithstrasse 14 a, D-0 1277 Dresden Page 63

ATTACHMENT 1 ALMO 6 Operating Manual 7.7. Connector Pin Assignment Pulse Input Pin Signal 1

VCC probe 2

Pulse input 3

Probe identification 4

AD identification 5

GND 2

1/2~LF51 Socket type:

Cable connector:

Connection cable:

Binder subminiature circular connector Series 712 flange type socket 09-0428-90-05 Series 712 coupler connector 99-0425-00-05 Special probe cable pulse line shielded Page 64 Issue 05/2012 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Domrbltthstrasse 14 a, D-01277 Dresden

ATTACHMENT 1 I in 1: 1) 1 ALMO 6 Operating Manual 7.8. Connector Pin Assignment Power Supply Pin Signal 1

24 Volt 2

24 Volt 3

GND 4

GND M

Socket type:

Cable connector:

Connection cable:

i-]

3inder subminiature circular connector

eries 712 flange type socket 09-0428-90-04

eries 712 coupler connector 99-0425-00-04 Vall power supply 24 Volt = 2.3 A Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornblithstrasse 14 a, D-0 1277 Dresden Page 65

ATTACHMENT 1 I MIA)

I ALMO 6 Operating Manual

8. Maintenance If used correctly, the instrument does not require any particular maintenance. The only maintenance of the ALMO 6 consists of frequent cleaning of all surfaces from dust and other deposits.

8.1. Accumulator (rechargeable batteries)

In order to check functioning of the rechargeable batteries, monitors with UPS (optional) should be disconnected from the mains once a month for one hour in order to operate with the batteries.

If the rechargeable batteries are unable to last for this time period, they have to be replaced.

In case of (rechargeable) battery operation, a battery symbol is displayed in the lowest line on the display. If the voltage is too low, it is indicated as selected in the menu under 'Error displaylUndervoltage' (see 4.9.5). The instrument is turned off automatically if the voltage is too low.

After max. 2 years, the rechargeable batteries (type AA) have to be replaced by new ones.

Attention! Never use non-rechargeable batteries. The monitor can be destroyed by leaking or boiling batteries.

In case of stocking the instrument for a long time, the rechargeable batteries have to be removed in order to avoid total discharge.

Page 66 Issue 05/2012 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornblifthstrasse 14 a, D-0 1277 Dresden

ATTACHMENT 1 I M E D I

ALMO 6 Operating Manual

9.

Accessory The instrument is integrated in a plastic console housing. A desktop version and one for wall mounting are available.

As a build-in version, the instrument is supplied in a stainless steel housing.

For installation in a laboratory area with clean room conditions the electronics and the LCD are integrated in an aluminium die-cast housing.

The desired version has to be specified in the order.

Emereency power supply A battery pack for stand-alone power supply is integrated in the housing. The rechargeable batteries (included) are charged during mains operation by intelligent charge control. If you would like to get this version, please indicate this in your order.

Detectors See also chapter 6.2 'Technical Data Probes'.

Geiger-Muiller counter tubes o Type 18545 CE measuring range 150 nSv/h - 200 gSv/h o Type 18550 CE measuring range 10 pSv/h - 20 mSv/h o Type 18509 CE measuring range 50 pSv/h - 1 Sv/h o Type 18529 CE measuring range 500 pSv/h - 10 Sv/h o Type 18526 D counts during radial radiation approx. 4 cps/ýSv/h Nal scintillation detector o 1 x 1.5" Nal scintillation detector; type 25B38 Measuring range BG - 200 gtSv/h o 1.5 x 2" Nal scintillation detector, type 38B51 Measuring range BG - 100 gSv/h o 3 x 3" Nal scintillation detector, type 76B76 (Measured value display in cps)

Detector holders:

o simple wall holder (plastic element) o secure wall holder with terminal compartment Probe cable; length manufactured according to customer specifications.

Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornbltithstrasse 14 a, D-01277 Dresden Page 67

ATTACHMENT 1 I M F 1) 1 ALMO 6 Operating Manual Signal tower The signal tower (0 70; IP 54) comes with a maximum of 4 modules.

Siren element Siren element, 105 dB optional: Volume adjustable, acknowledgeable Signal element LED continuous light possible colors:

Green Yellow Red Blue The maximum number of controllable color modules is three. You can choose any color combinations and the signal elements can be designed as a flashlight.

The signal tower can be mounted using a wall holder or a table stand.

The dimensions vary depending on the configuration.

Example: Signal light with acoustic module, 3 color modules and wall holder 70 x 310 x 100 mm3 (width x height x depth)

Several signal towers can be operated in parallel.

Signal tower for clean rooms LED signal tower for use in clean rooms (Fraunhofer IPA approval, IP67/69K) and food applications (EHEDG approval); different colors and additional lighting effects adjustable, with integrated, high output buzzer (85 dB)

Angle or floor or ceiling mounting on plates/devices possible A mounting plate is available for installation on ceilings or walls.

Dimensions example:

Angle mounting with mounting plate Angle mounting Floor or ceiling 140 x 500 x 140 mm3 (width x height x depth) mounting Page 68 Issue 05/2012 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, DornblOthstrasse 14 a, D-01277 Dresden

ATTACHMENT 1 I M V,

1) 1 ALMO 6 Operating Manual Flashliaht The flashlight LED is available with or without sound.

Flashlight with sound Dimensions 0 90 mnn, height 80 mm Flashlight without sound Dimensions 0 100 mm, height 80 mm Cable to connect the alarm units The length of the connection cable for flashlight and signal towers is manufactured according to customer specifications.

Adapter for network solutions The order, the number of individual devices and the interface types can be mixed as needed. The maximum number of devices (including ALMO 3/6) is 16 and up to 48 probes will be supported.

No adapter is needed to transmit the data via USB and RS-232. However, the maximum length of each RS-232 connection is lOim and that of the USB connection 5m.

The length of the USB connection can be increased by connecting USB repeaters or USB hubs.

Adapter RS-232 to RS-485 and distributor Since each ALMO has only one interface connect the RS-485 cable must be wired in external cases. The interface is then set to RS-485 (see 4.9.4). The distributor must be in the vicinity of the respective ALMO. The total length of the RS-485 connections should not exceed 500m.

Adapter RS-232 to RS-485 Adapter RS-232 to RS-422 w Il I

No external adapters are needed when using a 5

multiple RS-422 card in the PC. In this case, the interface is set to RS-422 (see 4.9.4). The length of the RS-422 connections may be 500m each.

Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornbltithstrasse 14 a, D-01277 Dresden Page 69

ATTACHMENT 1

[Ul E D ALMO 6 Operating Manual Software Software ALMO Connecting several ALMO systems to one central computer system.

A maximum of 48 detectors can be connected to the ALMO systems. The software processes the data centrally and displays them. The software is used for data storage and threshold monitoring. Software on Windows basis including 5 m connection cable (ALMO-PC system). Optionally, the software can be installed and introduction into the software will be provided.

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ATTACHMENT 1 ALMO 6 Operating Manual Additional Display ALMO AD 1 The device ALMO AD 1 can be connected as an addition display to an ALMO 6 or ALMO 3. Several ALMO AD 1 can be connected in series. The measured data are supplied by ALMO 6 or ALMO 3. The alarm thresholds are defined in ALMO 6 or ALMO 3.

The setting for the device configuration and alarm assignment for exceeding of the alarm threshold or malfunctions takes place on the menu level. Visual and acoustic warnings are enabled when alarm thresholds are exceeded or if a malfunction occurs. Measuring electronics and display unit are integrated in a plastic housing.

A large LC display is incorporated into the front panel of the housing. The value currently measured by the connected detector is displayed on this LC display.

Additional Probe Display ALMO ZSA The ALMO ZSA system, in connection with the ALMO 6, allows you to display the local dose rate of up to 6 detectors, for example, Geiger-Muiller or Nal detectors. The ALMO ZSA is an additional display unit for the probe measurement values.

The ALMO 6 sends the probe data via an interface. Several ALMO ZSA can be operated in connection with the ALMO 6.

Two freely definable alarm thresholds can be defined in the ALMO 6 for each probe. This setting is done on the menu level of the ALMO 6. A visual / acoustic alarm is triggered whenever an alarm threshold is exceeded.

Optionally the device can be equipped with an emergency power supply.

Depending on the connected components (LED traffic light), the ALMO ZSA will continue to work for up to 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> after power failure.

Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Domblilthstrasse 14 a, D-01277 Dresden Page 71

ATTACHMENT 1 ALMO 6 Operating Manual

10. Service/Customer Service Please call us if you have any questions about the device. We will be happy to assist you.

In case your device is damaged, please return it adequately and safely packed for repair/service to the following address:

MED Nuklear-Medizintechnik Dresden GmbH Service dept. Dtilmen Ostdamm 139 48249 Dflmen Phone:

+49 (0)2594-9424-35 Fax:

+49 (0)2594-9424-45 E-mail:

service@nuklear-medizintechnik.de Homepage:

http ://www.nuklear-medizintechnik.de Page 72 Issue 05/2012 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornblilthstrasse 14 a, D-01277 Dresden

ATTACHMENT 1 I M 1: D I

ALMO 6 Operating Manual

11. EC Declaration of Conformity This is to certify that the following product:

ALMO6 Stationary dose rate meter with the option to connect 6 probes complies with the essential protection requirements as defined in the Council Directive on the approximation of the laws of the Member States with regard to electromagnetic compatibility (89/336/EEC).

The following standards were used to assess the product:

Electrostatic discharge immunity test Base standard: DIN EN 61000-4-2 (12.2001)

DIN EN 61326-1; table A. 1 (10.2006)

Electromagnetic field immunity test Base standard: DIN EN 61000-4-3 (12.2006)

DIN EN 61326-1; table A. 1 (10.2006)

Power frequency magnetic field immunity testing Base standard: DIN EN 61000-4-8 (12.2001)

DIN EN 61326-1; table 2 (10.2006)

Radiated disturbance measurements Base standard: DIN EN 55016-2-3 (08.2007)

DIN EN 55011 clase B group 1 (11.2007)

This declaration has been submitted by the manufacturer MED Nuklear-Medizintechnik Dresden GmbH Dornbliithstrasse 14 a D 01277 Dresden Dresden, October 08, 2012 Issue 05/2013 E, Subject to technical modifications without notice MED Nuklear-Medizintechnik Dresden GmbH, Dornblitthstrasse 14 a, D-01277 Dresden Page 73

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ACTIVATED CARBON FILTERS 0

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Applications: Radioiodines trapping or other toxic gases.

Type: Filters for glove boxes and sealed enclosures.

Media: Activated carbon with specific impregnation depending on type of gas to be trapped.

Carbon bed: Layer thickness 36 or 50 mm depending on model, kept settled by compression mattress eliminating any risk of leak.

Case: Stainless steel sheet metal Z2CN18-10.

Gasket: Viton.

Handle: 1.

Temperature: 80°C maximum in continuous service.

Control: Filter weighing at 100%

Assembly: Filters to be screwed into stainless steel casings.

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.0 3603.30.00 3603.30.02 Dimensins 10x) 160 i asor vapours voue tota Actived CarbonThrea CA102-02 KI and TEDA 20/200 M62 Viton R35 1 1.2 Unit volume M3 0.003 1.1 20 m'/h activated carbon filter 20 m'/h activated carbon filter Radioiedes 130x160 360-4.404 50 m nh a t vadca bo it 3603.30.04 20 m'Ai activated carbon fifter 3603.40.06 50m/

ciaedcro i 130x160 3.3 RadwjsC A102-02 1.1 Acids WH, HOl, CEXOO02A3 S

organic LGS048 1-compound,8 and TEA KOHl 50/ 300 20/130 M62 M62 2.5 thread YlonR35 Viton R35 KOH none 1 2 5 thread 1.2 J 0/200 M2.

M62 20/10 2.5 thread 7V i 2.

t;e Viton R3 Viton R35 V~rloioR35 3.8 1.2 3.8 0.003 0.003 0.007 E

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-qwcamifi1 CAMFIL FARR - 77/81, boulevard de la R13publique - 92257 La Garenne Colombes Cedex - France Tel. +33 (0)1 46 52 48 00 - Fax +33 (0)1 47 60 17 81 - www.camfilfarr.com a

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ADSORPTION ATTACHMENT 7 Data Sheet Reference Index Page GLOVE BOX FILTER 50 m 3.h 1 for iodine trapping FP.A.01 53 D

1/1 Article Carbon Airflow/Ap Mounting Gasket Shipping data number volume m3.h'/Pa 3

L In kg 50/300 3603.40.03 3,3 40/240 Thread M62 x 2,5 Viton R35 0,007 3,8 30/180 Spicifications :

Type :

Filters for glove boxes and isolation chambers with hand.

Media:

KI + TEDA impregnated carbon for iodine trapping.

Grid:

Stainless stell perfored X2CrNi 18-9.

Gasket:

Viton R35.

Temperature:

80'C maximum continuous operation.

Control:

Weighing Marking:

3 sheets label on the tight plastic bag.

Documentation :

Certification from the IRSN institute with charbon efficiency (Epurating ratio >80%

for a relative humidity of 90%)

Applications:

Trapping of radio-iodes in the nuclear industry (molecular iodine and methyl-iodine).

7c"fm CAMFIL 77/81 Bd de [a R6publique-92257 LA GARENNE COLOMBES CEDEX France S

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T61l. 01.46.52.48.00 - Fax : 01.47.60.17.81 FPA0153-D

HEGA Filters Disposable, Replaceable or Refillable Adsorbers for the Control of Dangerous Gaseous Contaminants A Wholly Owned Subsidiary of Flanders Corporation

ATTACHMENT 8 HE A Fites Tabl ofCnet)

Quality Assurance................................................

2 Im portant Message...............................................

3 Introduction......................................................

4 What is a HEGA?

Where are HEGA's Used?

How Does a HEGA Work?

HEGA Selection D esig n...........................................................

5 Design Considerations Diagram: V-Bed Adsorber Applications V-Bed Adsorbers.................................................

6 Carbon Adsorbers Residence Time Applications Adsorber Deisgn and Performance Stainless Steel Frame Adsorbers..................................

7 DMMP -Qualified Adsorbers Adsorber Housings Type IV (V-Bed) Stainless Steel Frame Adsorbers Suggested Specifications Type IV Stainless Steel Adsorbers........

8 Ordering Information Diagram: Model Number Breakdown Ordering Inform ation..............................................

9 Type IV (V-Bed) Stainless Steel Adsorbers Chart: Full-Size Gel Seal Adsorbers Chart: Full-Size Gasket Seal Adsorbers Type IV (V-Bed) Stainless Steel Adsorbers - Small Size Chart: Small Size Stainless Steel Gel Seal Adsorbers -Activated Carbon Chart: Small Size Stainless Steel Gasket Seal Adsorbers -Activated Carbon Chart: Small Size Stainless Steel Gel Seal Adsorbers - Nuclear Grade Carbon Chart: Small Size Stainless Steel Gasket Seal Adsorbers - Nuclear Grade Carbon Chart: Small Size Stainless Steel Gel Seal Adsorbers - Whetlerized Carbon Chart: Small Size Stainless Steel Gasket Seal Adsorbers - Whetlerized Carbon C inersorb........................................................

13 Suggested Specifications and Ordering Info for Cinersorb...........

14 Diagram: Model Number Breakdown Chart: Gel Seal Housings Chart: Gasket Seal Housings Type II Tray Carbon Adsorbers.....................................

17 Type II Tray Carbon Adsorbers Application Suggested Specifications Diagram: Model Number Breakdown Ordering Information for Type II Tray Carbon Adsorbers..............

18 Diagram: Type II Carbon Tray Adsorber Chart: Flanders/CSC Type II Tray Adsorber Carbon Sampling Systems........................................

19 Carbon Sampling Canisters Radioactive Iodine Performance Test Types of Adsorption Efficiency vs. Penetration Residence Time Capacity Decontamination Factor Design Principles for Filtering Dangerous Chemical Contaminants

ATTACHMENT 8 HE A

Fitr C'

0 E2 NOTICE... Compliance with installation and operation standards must be met to ensure quality performance.

HEGA filters are factory tested to meet the requirements of IES RP-CC-008-84, "Recommended Practice for Gas Phase Adsorber Cells."

HEPA filters are factory tested to meet the requirements of IES RP-CCOO1.3 for Type A, B, C, D or E filters:

Industrial Grade Nuclear Grade Laminar Flow Grade Bio/Hazard Grade HEPA VLSI ULPA Test results appear on both the filter label and upon the filter carton label.

An additional quality assurance test report is kept on file and is available on request.

Flanders/CSC recommends that all HEGA and HEPA filters be tested in place by qualified personnel to ensure that the filters have been correctly installed in the containment housing.

Flanders/CSC service personnel are available for installations, supervision of installation, testing and certification of compliance to industry and government standards and instruction of the owner's personnel in testing and maintenance procedures.

Flanders/CSC does not guarantee that its equipment will operate at the performance levels given on the identification labels or in the catalog specifications under all conditions of installation and use, nor does Flanders/CSC guarantee the suitability of its product for the particular end use which may be contemplated by the buyer.

For best results, it is recommended that the buyer supply complete information about the operating conditions of the ventilation system to Flanders/CSC for evaluation.

When the system components are supplied to the buyer or his agent for final installation and assembly in the field, it should be under the supervision of factory trained personnel.

Failure to adhere to this recommenda-tion or failure of the buyer to have filters timely retested and serviced will nullify or limit any warranties which might otherwise apply and may result in a compromised installation.

2

ATTACHMENT 8 Ffwn /E Quality Assurance Any industry that has dangerous process or exhaust gases and/or particulates has a vital concern for the health and safety of personnel.

In addition to corporate concern, the United States Government has dictated that safety equipment meet minimum safety standards. Any equipment sold to meetthese minimum standards has to be manufactured using accepted Quality Control procedures.

Flanders/CSC Corporation has developed a Quality Assurance program to assure that the product or service provided meets these standards. This program addresses the entire range of Flanders/CSC involvement, including the purchase of raw materials, the shortage of these raw materials, incorporation of these materials into a product or service, testing this product or service, and then shipping it to its destination.

The program of Flanders/CSC has been audited many times, and each time the program has been acceptable. An uncontrolled copy of the program manual is available with each request for Quality Assurance information.

Like any dynamic document, the program is continually being revised to include recent issues of standards and specifications in order that Flanders/CSC may use the latest state-of-the-art methods in providing its products and services.

The Quality Assurance Program at Flanders/

CSC Corporation has been audited and approved several times by the Nuclear Utilities Procurement and Inspection Committee, NUPIC.

This committee was established by nuclear electric utilities to ensure that suppliers of goods and services can meet all applicable regulatory and quality requirements.

Notes:

1 As part of our continuing program to improve the design and quality of all our products, we reserve the right to make such changes without notice or obligation.

2 Flanders/CSC, through its limited warranty, guarantees that the products described herein will meet all specifications agreed to by the buyer and the seller.

3 ASME N509 Nuclear Power Plant Air-Cleaning Units and Components.

4 ASME N510 Testing of Nuclear Air Treatment Systems.

© Copyright 2003 Flanders/CSC Corporation 7013 Hwy 92E - PO Box 3 Bath, NC 27808 3

ATTACHMENT 8 HEA Fites Inroucio What is a HEGA?

To be called a High Efficiency Gas Adsorber (HEGA), the adsorber must exhibit a minimum mechanical efficiency of 99.9% when tested in accordance with the Institute of Environmental Sciences designation:

IES-RP-CC-008-84, "Recommended Practice for Gas Phase Adsorber Cell." In addition, the adsorber must be designed, built, filled and packaged in accordance with the intent of this standard.

Since HEGA filters are manufactured in several different sizes and of several different materials, this standard is not always followed to the letter. It is the intent of the standard and the resulting performance of these adsorbers that is important. This type of adsorber is not intended to be used in odor control systems.

However, if the user needs a very efficient odor control system and can justify the higher initial and operating costs, then this type of adsorber will do an excellent job. The following comparison between an odor control type adsorber vs. a HEGA may help:

" Nuclear Power Plants

" Cancer Research Laboratories

" Toxicology Laboratories

" Animal Disease Research Facilities

" Chemical Agent Research Facilities

" Bomb Shelters (CBR)

" Radiopharmaceutical Plants

" HVAC Systems

" Laboratories Using Chemical Carcinogens

" Chemical Agent Munitions Disposal Facilities

" Hospital Isolation Suites

" Pharmacological Facilities

• Chemical Process Facilities

" Military Facilities

• Biological Research Facilities

• Department of Energy Facilities How Does a HEGAWork?

A High Efficiency Gas Adsorber (HEGA) filters gaseous contaminants from an airstream by adsorbing the contaminants (See Page 19, "Types of Adsorption"). With a properly designed system that includes proper adsorber selection, adsorbent and resident time, any adsorbable contaminant can be filtered and contained. (See Page 6 for "Adsorber Design and Performance.'

Page 20, "Residence Time").

HEGA Selection When designing a system requiring HEGAs, consider:

1. Type: "Cinersorb" (p. 13), Type IV (V-Bed) (p. 7), or Type II Tray? (p. 17)

2. Type of carbon needed? (p. 6 & 7)

3. Residence Time: (See pp. 6 & 20)

4. Need for sample canisters? (See p. 19)

An odor control type adsorber compared to a HEGA is like comparing an ASHRAE type particulate filter to a HEPA. The odor control type adsorber (like the ASHRAE type particulate filter) has a low efficiency, low pressure drop and low cost. On the other hand, the HEGA (like the HEPA) has a higher efficiency, higher pressure drop and higher cost. Both adsorbers have their place in industry, but because of these major differences they are not usually interchange-able.

Where are HEGA's Used?

HEGA's are most often used in "containment" air filtration systems. Containment air filtration systems are very high efficiency systems, used to filter and contain dangerous particulate and/

or gaseous contaminants. Containment systems are most often designed to treat exhaust air from contaminated spaces, but occasionally are used in supply and recirculated air systems. Examples of facilities using these systems are:

4

ATTACHMENT 8 HEA Fites Deig Conidraton Design Considerations The following should be considered when designing a filtration system:

1. Any system that filters dangerous contaminants should incorporate bag-in/

bag-out housings to contain the contaminated filters and protect maintenance personnel during filter change-out.

2. Particulate filtration must be provided upstream of HEGA filters to prevent the adsorber from trapping particulates and thereby increasing the adsorber's pressure drop.

3. Some applications require high efficiency or HEPA filters located down-stream of the adsorber to collect any fines (dust which might be contaminated) released from the adsorbent material and to act as a backup in case the first particulate filter should fail.

4. Filter trains can be easily constructed with any combination of roughing filters, high efficiency filters, HEPA filters and adsorbers (See illustration below).

5. An in-place test of both adsorbers and HEPA filters is recommended for nuclear containment systems and is becoming a more frequent requirement for many critical applications.

The purpose of this in-place testing is to "validate" the installed system. The in-place test, if required, should be discussed with a Flanders/CSC factory representative prior to the selection of equipment so the system will be correctly designed to facilitate the test.

In-place test equipment and service personnel are available from Flanders/

CSC to assist in the original installation and testing.

6. The filtration system should be manufactured under a good quality assurance program such as one that addresses all of the basic requirements of ASME NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities."

V-Bed Adsorber Applications From left to right: prefilter, upstream in-place test section, HEPA filter, V-bed adsorber, in-place combination test section, V-bed adsorber, HEPA filter, downstream in-place test section.

5

ATTACHMENT 8 HEA Fites

-Be Adsorber Carbon Adsorbers Carbon adsorbers use activated or impregnated

/activated carbon as a filtering medium to remove gaseous emissions from nuclear, biological and/or chemical process exhaust air. Due to the potentially hazardous nature of their end use, the customer should consult with Flanders/CSC technical representatives as early as possible during the design phase of a project to assure proper specifications for the adsorbers and the filtration system. Flanders/

CSC personnel have many years experience with gas-phase and HEPA filtration systems and can provide assistance in adsorbent selection, residence time calculations, and system configuration.

All units are manufactured in accordance with Flanders/CSC's quality assurance program, which meets the requirements of ASME-NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities." Flanders/

CSC tests each adsorber to insure a minimum mechanical efficiency (the percentage of air that actually contacts the activated carbon in a system without penetrating voids or cracks) of 99.9% per IES-RP-CC-008-84, "Recommended Practice for Gas-Phase Adsorber Cells." This test of the adsorber's efficiency on test agents is used to determine if the adsorber is properly manufactured and filled, but not whether it is suitable for a given application.

Residence Time Under actual operating conditions, the removal efficiency (the percentage of containment actually removed by the activated carbon during operation) of an adsorber is determined by the type and amount of contaminant in the gas stream, the type and amount of adsorbent, and the residence time (the time that the gas stream is in contact with the carbon). In most applications, a residence time of 0.125 second is sufficient. In other cases, residence time is a critical factor that must be calculated for the specific contaminant. (See p. 20.)

Applications Type IV (V-Bed) adsorbers are designed for use in Flanders/CSC BF-Series and BG-Series bag-in/bag-out housings for KF-Series and KG-Series high efficiency side-service housings.

Occasionally they are used in large "front and rear loading" built-up banks inside walk-in plenums, but the Type II Tray adsorber is usually best suited for that system design.

Adsorber Design and Performance All units are made with beds of carbon mounted in a "V" configuration at various depths and residence times at rated airflow depending upon customer requirements. Various grades of carbon are available to meet specific removal requirements:

Designation A = Activated 8 x 16 mesh carbon is used to adsorb heavy solvents, elemental iodine and most odors. This carbon is specified as follows:

The activated carbon shall be coconut shell base, 8 x 16 mesh and shall have a minimum carbon tetrachloride activity of 60% when tested in accordance with ASTM D3467. The carbon shall meet the "base" carbon requirements for nuclear grade carbon.

Designation N = Nuclear grade 8 x 16 mesh carbon is specially impregnated activated carbon used to adsorb organic radioiodides.

This carbon is specified as follows:

The nuclear grade carbon shall be coconut shell base, 8 x 16 mesh that meets the requirements of *ASME N509-1996 "Reaffirmed," Section 5.2.

Designation W = Whetlerized 12 x 30 mesh carbon is specially impregnated activated carbon used to adsorb toxic warfare gases. This carbon is specified as follows:

The activated carbon shall be specially impregnated coal base that meets the require-ments of Military Standard MIL-C-0013724D.

6

ATTACHMENT 8 HE A Fitr:Stils Stee Frm

-A.

• brs Designation T = ASZM-TEDA (Cooperite) 12 x 30 mesh carbon used to adsorb toxic warfare gases. Performs similar to Whetlerite.

Impregnants do not include chromium.

The activated carbon shall be specially impregnated coal base that meets the requirements of EA-DTL-1704A.

Other media available to meet design requirements.

Note: Carbon adsorbers can be "poisoned" by paint fumes and other gases commonly found in many facilities and must be carefully protected when stored. The customer should consult the factory representative regarding storage precautions.

DMMP - Qualified Adsorbers Flanders/CSC model numbers AF-GG16-62-WSD AF-GG1 6-62-TSD AG-GG16-62-WSD AG-GG16-62-TSD have been tested and certified for DMMP Qualification at the U.S. Army Armament Munitions and Chemical Command, Aberdeen Proving Grounds.

Adsorber Housings V-Bed carbon adsorbers are manufactured in standard sizes for use in bag-in/bag-out and side-load housings, and are available in both gel seal and gasket seal designs. Flanders/CSC manufactures a complete line of housings for adsorbers and HEPA filters. Contact the factory or your Flanders/CSC representative for complete information on adsorbers and HEPA filter housings.

Type IV (V-Bed) Stainless Steel Frame Adsorbers Description The Flanders/CSC Type IV (V-Bed) adsorber is designed with either 1-inch, 1 3/8-inch or 2-inch thick beds arranged in a V-Bank configuration.

This design allows a high airflow at a relatively low pressure drop. Adsorber frames are constructed of T-304 stainless steel with T-304 stainless steel perforated screens.

These adsorbers are designed for use in Flanders/CSC G-Series, BF-Series and BG-Series bag-in/bag-out housings, KF-Series and KG-Series efficiency side-serving housings.

These adsorbers are manufactured under stringent quality control procedures. Each adsorber is filled, tested and packaged in accordance with IES Designation:

RP-8 (IES-RP-CC-008, "Recommended Practice for Gas Phase Adsorber Cells"). Before shipping, each adsorber is tested in accordance with this standard to assure a minimum mechanical efficiency of 99.9%.

Type IV Stainless Steel Frame Adsorber Features

- Minimum mechanical efficiency of 99.9%

when tested in accordance with IES Designation: RP-8 (IES-RP-CC-008, "Recommended Practices for Gas-Phase Adsorber Cells").

Higher efficiencies available when required.

7

ATTACHMENT 8 r.HEA Fites Sugete Spcfcain Typ IV StilesSte A.

• b

" Designed, manufactured and tested under a Quality Assurance Program that meets the basic requirements of ASME NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities:"

" Available in several standard sizes allowing use in standard filter housings.

" Corrosion resistant.

" Can be filled with appropriate adsorbent to capture any adsorbable contaminant.

• Many applications: Treat exhaust air from safety cabinets, glove boxes and fume hoods, supply air to inhalation labs, etc.

Suggested Specifications Type IV Stainless Steel Adsorbers From the tables on Pages 9 - 11, fill in the blanks for adsorber requirements.

Adsorber shall be Flanders/CSC model number

. Adsorber frame shall be constructed of 14-gauge T-304 stainless steel and have beds that are

deep, arranged in a V-bank configuration. The filter frame shall be size:

" high x

" wide x

" deep, and have a ____(gel/gasket) seal on one side. The rated flow shall be CFM at approximately _

" w.g.

pressure drop and second residence time. Adsorber screens shall be perforated 26 gauge T-304 stainless steel supported by external spacers to prevent distortion during filling with carbon. Adsorber shall exhibit a minimum mechanical efficiency of 99.9% when tested in accordance with IES-RP-CC-008-84, "Recommended Practice for Gas-Phase Adsorber Cells." Units shall be designed, manufactured, and tested under a Quality Assurance Program that meets the requirements of ASME NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities."

Ordering Information: Type IV (V-Bed) Stainless Steel Adsorber Model Number Breakdown (Example)

Adsorber I DMMP Qualified G= Gasket Seal (Leave blank if not required)

F= Gel Seal

[Frame Material AA A

1 S=Stainless Steelý

/UoUIl I

&W.I %llwillll"alI High Wide Deep CC6

= 12"x 12"x 5 Tle" CC12

= 12"x 12"x 11 Yh" CG12

= 12"x 24"x 11 Yh" CG16

= 12"x 24"x 16" GC16

= 24"x 12"x 16" GC12

= 24"x 12"x 11 1/2" GG12

= 24"x 24"x 11 '/2" GG16

= 24"x 24"x 16" GG18

= 24"x 24"x 18" w.....

I 1=-

Adsorbent Material A = Activated Carbon (8 x 16 Mesh)

N = Nuclear Grade Carbon (8 x 16 Mesh)

W = Whetlerized Carbon (12 x 30 Mesh)

T = ASZM-TEDA Carbon (12 x 30 Mesh)

Bed Thickness 1 = 1" Bed Thickness 1 3/a = I XIs" Bed Thickness 2 = 2" Bed Thickness

_n,___

I

-,i

-.. 1 Number of Beds Per Cell Notes:

3 = 3 Beds per Cell

1.

In the charts on the following pages, pressure drop and weight will vary 4 =

4 Beds per Cell slightly due to variations in carbon particle size distribution and packing 8 =

8 Beds per Cell density.

10 = 10 Beds per Cell

2.

Not all model number combinations above are available.

8

ATTACHMENT 8 HE A Fites Orern Inorato Ordering Information: Type IV (V-Bed) Stainless Steel Adsorber Note: A P may vary by +/- 20% due to physical characteristics of the carton. These variations must Full Size Gel Seal Adsorbers be considered when sizing fans.

Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Nummbr HxWxD Flow AP Time Beds Depth Temp.

Carbon Ship W w/Gel Seal Channel Net Wt.I (inches)

(CFM)

(In. WG-) (sec.)

(inches)

(Ibs.)

(lbs.)

AF-GC12-101-AS 24x12x12114 500 0.90 0.083 10 1

200F 29 92 AF-GC12-101-NS 24x12x121(4 500 0.90 0.083 10 1

2007 32 95 AF-GC12-101-WS 24x12x12 1/4 500 2.00 0.083 10 1

200F 35 98 AF-GC12-101-TS 24x12x12 1/4 500 2.00 0.083 10 1

200'F 35 98 AF-GG12-101-AS 24x24121 4 1000 0.90 0.083 10 1

200°F 58 153 AF-GG12-101-NS 24x24x12 1/4 1000 0.90 0.083 10 1

2007F 64 159 AF-GG12-101-WS 24x24x12 1/4 1000 2.00 0.083 10 1

200"F 70 165 AF-GG12-101-TS 24x24x12 1/4 1000 2.00 0.083 10 1

200F 70 165 AF-GG16-81 3/8-AS 24x24x163/4 1000 0.85 0.125 8

13/8 200"F 75 210 AF-GG16-813/-NS 24x24x16 3/4 1000 0.85 0.125 8

13/8 200"F 80 215 AF-GG16-813/e-WS 24x24x16 3/4 1000 2.10 0.125 8

13/8 200'F 90 225 AF-GG16-813/8-TS 24x24x16 3/4 1000 2.10 0.125 8

13/8 200"F 90 225 AF-GG12-62-AS 24x24x12 1/4 700 1.75 0.125 6

2 200'F 59 162 AF-GG12-62-NS 24x24x12 1/4 700 1.75 0.125 6

2 200°F 62 165 AF-GG12-62-WS 24x24x12'/4 700 3.90 0.125 6

2 200=F 70 173 AF-GG12-62-TS 24x24x12/4 700 3.90 0.125 6

2 200"F 70 173 AF-GG16-62-AS 24x24x163/4 1000 1.75 0.125 6

2 200"F 79 205 AF-GG16-62-NS 24x24x16 3/4 1000 1.75 0.125 6

2 200°F 86 212 AF-GG16-62-WS 24x24x16 3/4 1000 3.90 0.125 6

2 200F 98 224 AF-GG16-62-WSD 24x24x16 3/4 1000 3.90 0.125 6

2 200*F 100 226 AF-GG16-62-TS 24x24x16 3/4 1000 3.90 0.125 6

2 200*F 98 224 AF-GG16-62-TSD 24x24x16 3/4 1000 3.90 0.125 6

2 200*F 100 226 AF-GG18-62-AS 24x24x18 3/4 1250 1.75 0.125 6

2 200°F 90 225 AF-GG18-62-NS 24x24x18 3/4 1250 1.75 0.125 6

2 200°F 96 231 AF-GG18-62-WS 24x24x18 3/4 1250 4.10 0.125 6

2 200"F 105 240 AF-GG18-62-TS 24x24x18 3/4 1250 4.10 0.125 6

2 200°F 105 240

/

5

-0 02 2

9

ATTACHMENT 8 HEA Fites Orern Inoration Ordering Information: Type IV(V-Bed) Stainless SteelAdsorber Note: A P may vary by +/- 20% due to physical characteristics of the carton. These variations must be considered when sizing fans.

Full Size Gasket Seal Adsorbers Model Size Rated Approx.

Res.

No. of Bed Max. Approx. Approx.

Number H xW x D Flow AP Time Beds Depth Temp. Carbon Ship Wt.

Net Wt.

(inches)

(CFM) (In. W,.) (sec.)

(inches)

(lbs.)

(lbs.)

AG-GC12-101-AS 24x12x11 1/2 500 0.90 0.083 10 1

200*F 29 89 AG-GC12-101-NS 24x12x11 1/2 500 0.90 0.083 10 1

200°F 32 92 AG-GC12-101-WS 24xl2xll1 2

500 2.00 0.083 10 1

200*F 35 95 AG-GC12-101-TS 24x12x11 1/2 500 2.00 0.083 10 1

200'F 35 95 AG-GG12-101-AS 24x24x111 2 1000 0.90 0.083 10 1

200'F 58 148 AG-GG12-101-NS 24x24x11 1/2 1000 0.90 0.083 10 1

200'F 64 154 AG-GG12-101-WS 24x24x11112 1000 2.00 0.083 10 1

200*F 70 160 AG-GG12-101-TS 24x24x111 2 1000 2.00 0.083 10 1

200-F 70 160 AG-GG16-813 /8-AS 24x24x16 1000 0.85 0.125 8

1 /8 200*F 75 205 AG-GG16-813/8-NS 24x24x16 1000 0.85 0.125 8

13/8 200*F 80 210 AG-GG16-81 3/8-WS 24x24x16 1000 2.10 0.125 8

13/8 200*F 90 220 AG-GG 16-81 3/8-TS 24x24x16 1000 2.10 0.125 8

13/8 200*F 90 220 AG-GG12-62-AS 24x24x111/2 700 1.75 0.125 6

2 200'F 59 157 AG-GG12-62-NS 24x24x11 1/2 700 1.75 0.125 6

2 200'F 62 160 AG-GG12-62-WS 24x24x11 1/2 700 3.90 0.125 6

2 200'F 70 168 AG-GG12-62-TS 24x24x111 /2 700 3.90 0.125 6

2 200*F 70 168 AG-GG 16-62-AS 24x24x16 1000 1.75 0.125 6

2 200'F 79 200 AG-GG16-62-NS 24x24x16 1000 1.75 0.125 6

2 200'F 86 207 AG-GG16-62-WS 24x24x16 1000 3.90 0.125 6

2 200"F 98 219 AG-GG16-62-WSD 24x24x16 1000 3.90 0.125 6

2 200*F 100 221 AG-GG16-62-TS 24x24x16 1000 3.90 0.125 6

2 200'F 98 219 AG-GG16-62-TSD 24x24x16 1000 3.90 0.125 6

2 200*F 100 221 AG-GG18-62-AS 24x24x18 1250 1.75 0.125 6

2 200*F 90 220 AG-GG18-62-NS 24x24x18 1250 1.75 0.125 6

2 200OF 96 226 AG-GG18-62-WS 24x24x18 1250 4.10 0.125 6

2 200*F 105 235 AG-GG18-62-TS 24x24x18 1250 4.10 0.125 6

2 200'F 105 235 10

ATTACHMENT 8 HEA Fites ordrin Infomaio Ordering Information: Type IV (V-Bed) Stainless Steel Adsorber Small Size Adsorbers Note: A P may vary by +/- 20% due to physical characteristics of the carton. These variations must be considered when sizing fans.

Ordering information below is for small size gel and gasket seal adsorbers, grouped by adsorbent materials (Activated Carbon, Nuclear Grade Carbon, Whetlerized Carbon and ASZM-TEDA Carbon).

Small Size Stainless Steel Gel Seal Adsorbers - Activated Carbon Model Size Rated Approx.

Res No. of Bed Max.

Approx. Approx.

Numbe~r Hx2W xD Flow AP Time Beds Depth Temp. Carbon Ship W]

w~ithGelSalChannelNt t

(inches)

(CFMf)

(In-W G.) (sec.)

(inches)

(lbs.)

Olbs.)

AF-BB6-41-AS 8x 8x 65/8 40 0.45 0.083 4

1 2007F 3

16 AF-CC6-41 3/8-AS 12x12x 61/e 55 0.90 0.125 4

13/8 200"F 8

33 AF-CC12-413 /e-AS 12x12x12 1/4 140 1.10 0.125 4

13/

200*F 14 53 AF-CC16-41 3/8-AS 12x12x16 3/4 465 0.85 0.125 4

11/%

200"F 45 124 Small Size Stainless Steel Gasket Seal Adsorbers - Activated Carbon Mode Sz Rate Approx.

Re.#

No. of Bed Max.

Approx. Approx.

Number K zW xD Flow AP Time Beds Depth~ TemTp.

Carbon Ship Wt.

(kinches)

(CFM)

(in. WG.) (sec.)

(inches)

(lbs.)

(lbs.)

AG-BB6-41-AS 8x8x571e 40 0.45 0.083 4

1 200*F 3

15 AG-CC6-41 3/8-AS 12x12x571/

55 0.90 0.125 4

13/8 200'F 8

31 AG-CC12-41 3/8-AS 12x12x11 1/2 140 1.10 0.125 4

13/8 200"F 14 51 AG-CG16-413/8-AS 12x24x16 465 0.85 0.125 4

13/8 200°F 45 121 11

ATTACHMENT 8 HE A Fites Orern Inorato Small Size Stainless Steel Gel Seal Adsorbers - Nuclear Grade Carbon Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Number H xW xD Flow ftP Time Beds Depth Temp. Carbon Ship Wt.

wI Gel Seal Channel Net Wt.

(inches)

(CFM) (In. W.G.) (sec.)

(inches)

(lbs.)

(Ibs.)

AF-BB6-41-NS 8x 8x 65/8 40 0.45 0.083 4

1 200°F 3

16 AF-CC6-413 /8-NS 12xl2x 65/8 55 0.90 0.125 4

13/8 200'F 8

33 AF-CC12-41 3/8-NS 12x12x12 1/4 140 1.10 0.125 4

1%

200*F 15 54 AF-CC16-413/8-NS 12x12x163 /4 465 0.85 0.125 4

1138 200°F 48 127 Small Size Stainless Steel Gasket Seal Adsorbers - Nuclear Grade Carbon Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Number HxWxD Flow AP Time Beds Depth Temp. Carbon Ship Wt.

Net Wt.

(inches)

(CFM) (In. WG.) (sec.)

(inches)

(Ibs.)

(lbs.)

AG-BB6-41-NS 8x 8x 57/8 40 0.45 0.083 4

1 2000F 3

15 AG-CC6-413/8-NS 12x12x 57/8 55 0.90 0.125 4

13/8 200°F 8

31 AG-CC12-413/8-NS 12x12x11 1/2 140 1.10 0.125 4

13/8 200OF 15 52 AG-CG16-413/8-NS 12x24x16 465 0.85 0.125 4

13/8 200'F 48 124 Small Size Stainless Steel Gel Seal Adsorbers - Whetlerized Carbon Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Number H xW x D Flow AP Time Beds Depth Temp. Carbon Ship Wt.

w/ Gel Seal Channel Net Wt.

(inches)

(CFM) (In. WG.) (sec.)

(inches)

(Ibs.)

(lbs.)

AF-BB6-41-WS 8x 8x 65/8 40 1.00 0.083 4

1 200'F 4

17 AF-CC6-413 /8-WS 12x12x 6 58 55 2.10 0.125 4

13/8 200'F 9

34 AF-CC12-413/8-WS 12x12x12/4 140 2.10 0.125 4

13/8 200"F 16 55 AF-CC16-413 /8-WS 12x12x16 3/4 465 2.10 0.125 4

1138 200'F 50 129 Small Size Stainless Steel Gasket Seal Adsorbers -Whetlerized Carbon Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Number HxWxD Flow AP Time Beds Depth Temp. Carbon Ship Wt.

Net Wt.

(inches)

(CFM) (In. WG.) (sec.)

(inches)

(lbs.)

(lbs.)

AG-BB6-41-WS 8x 8x 51/8 40 1.00 0.083 4

1 200'F 3

15 AG-CC6-413/8-WS 12x12x 57/8 55 2.10 0.125 4

13/8 200'F 8

31 AG-CC12-413/8-WS 12x12x11 1 /2 140 2.10 0.125 4

13/8 200'F 15 52 AG-CG16-413/8-WS 12x24x16 465 2.10 0.125 4

13/8 200'F 48 124 12

ATTACHMENT 8 A

AN Cinersorb: Incineratable High Efficiency Gas Adsorber The Cinersorb is the solution to problems associated with the disposal of carbon adsorbers contaminated with toxic, carcinogenic, microbiological, radioactive or other dangerous contaminants.

Many facilities have a waste disposal problem regarding high-efficiency adsorbers that are loaded with dangerous contaminants. In the past, high-efficiency adsorbers (i.e.. adsorbers that exhibit a mechanical efficiency of 99.9%)

have been manufactured with metal frames.

Since these metal frame adsorbers cannot always be safely refilled with fresh carbon, their disposal becomes a problem.

The Flanders/CSC Cinersorb, which has a combustible frame constructed of high impact polystyrene plastic, solves this problem.

Features

• Polystyrene frame allows disposal by incineration (volume reduction exceeds 95%)

• Mechanical efficiency of 99.9% when tested in accordance with IES-RP-CC-008-84, "Recommended Practice for Gas-Phase Adsorber Cells"

" Available in many sizes (See pp. 15-16),

allowing use in most standard filter housings

" Easier to handle, weighs 40 to 50% less than metal frame adsorbers

" Less expensive than metal frame adsorbers

• Corrosion resistant

• Can be filled with any adsorbent to capture almost any contaminant

" Many applications, including safety cabinet, glove box and fume hood exhaust, laboratory supply air and odor control Incineration guidelines vary from contaminant to contaminant. The customer should determine that incineration meets the requirements governed by type of contaminant in question and local regulations.

• Designed, manufactured and tested under a Quality Assurance Program that meets the requirements of ASME-NQA-1, "Quality Assurance Program for Nuclear Facilities" 13

ATTACHMENT 8 HEA Fites Suggested Spcfcain an Orern.-

ointo fo Ci.

Suggested Specifications Cinersorb Disposable Carbon Adsorbers From the tables on Pages 15-16, fill in the blanks for adsorber requirements.

Adsorber shall be Flanders/CSC model number

. Adsorber frame shall be constructed of high impact polystyrene to allow disposal of spent adsorber by incineration.

Adsorbers shall have beds that are deep, arranged in a V-bank configuration.

The filter frame shall be size:

" high x

" wide x

" deep, and have a (gel/gasket) seal on one side. The rated flow shall be CFM at

_"w.g.

pressure drop and second residence time. Adsorber screens shall be perforated plastic supported by external spacers to prevent distortion during filling with carbon. Adsorber shall exhibit a minimum mechanical efficiency of 99.9% when tested in accordance with I ES-RP-CC-008-84, "Recommended Practice for Gas-Phase Adsorber Cells."

Model Number Breakdown (Example) jLrame Adsorber G= Gasket Seal]

F= Gel Seal 1Frame Material 1A k

Q_

_P

= P la s tic Hiah Wide Deed CC12

= 12"x 12"x 11 1/2" CG16

= 12"x 24"x 16 GC16

= 24"x 12"x 16" GC12

= 24"x 12"x 11 1/2" GG12

= 24"x 24"x 11 1/2" GG16

= 24"x 24"x 16" GG18

= 24"x 24"x 18" Adsorbent Material A = Activated Carbon (8 x 16 Mesh)

N = Nuclear Grade Carbon (8 x 16 Mesh)

W = Whetlerized Carbon (12 x 30 Mesh)

T = ASZM-TEDA Carbon (12 x 30 Mesh)

Iii 711 Bed Thickness I = 1" Bed Thickness I Y/e = I D/e" Bed Thickness 2 = 2" Bed Thickness Number of Beds Per Cell 3 = 3 Beds per Cell 4 =

4 Beds per Cell 8 =

8 Beds per Cell 10 =

10 Beds per Cell 12-=

12 Beds per Cell Notes:

1.

In the charts on the following pages, pressure drop and weight will vary slightly due to variations in carbon particle size distribution and packing density.

2.

Not all model number combinations above are available.

14

ATTACHMENT 8 Ordering Information: Cinersorb Disposable Carbon Adsorber These adsorbers are designed as disposable above 1200 F or if contaminants will attack the units. DO NOT refill with fresh carbon for reuse.

polystyrene plastic frame material.

NOT recommended for use in systems Note: A P may vary by +/- 20% due to physical characteristics of the carton. These variations must be considered when sizing fans.

Gel Seal Housings Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Number H xW xD Flow AP Ti me Beds Depth Temp.

Carbon Ship Wit.

wlothGlSeal Chane Not Wit.

(inches)

(CFM)

(in. W..) (sec.)

(inches)

(1bs.)

(lbs.)

AF-GC12-101-AP 24x12x12'/4 500 0.90 0.083 10 1

1207F 23 92 AF-GC12-101-NP 24x12x12 114 500 0.90 0.083 10 1

1207F 25 95 AF-GC12-101-WP 24x12x12l14 500 2.00 0.083 10 1

120°F 26 98 AF-GC12-101-TP 24x12x12l/4 500 2.00 0.083 10 1

120-F 26 98 AF-GG12-101-AP 24x24x12 1/4 1000 0.90 0.083 10 1

120F 43 153 AF-GG12-101-NP 24x24x12l1a 1000 0.90 0.083 10 1

120"F 49 159 AF-GG12-101-WP 24x24x12 1/4 1000 2.00 0.083 10 1

120"F 52 165 AF-GG12-101-TP 24x24x12114 1000 2.00 0.083 10 1

120"F 52 165 AF-GG12-62-AP 24x24x12 1/4 700 1.75 0.125 6

2 200"F 59 162 AF-GG12-62-NP 24x24x12114 700 1.75 0.125 6

2 200F 59 162 AF-GG16-813/8-AP 24x24x16 314 1000 0.85 0.125 8

13/8 120F 74 113 AF-GG16-81 3/8-NP 24x24x16 3/4 1000 0.85 0.125 8

13/8 1207F 79 118 AF-GG16-81 %-WP 24x24x16 3/4 1000 2.10 0.125 8

1 %

120F 88 127 AF-GG16-81%-TP 24x24x16 3/4 1000 2.10 0.125 8

13/8 1207F 88 127 AF-GG16-121-AP 24x24x16 3/4 1000

.5 0.125 12 1

120F 120 78 AF-GG16-121-NP 24x24x16 3/4 1000

.5 0.125 12 1

120'F 120 78 AF-GG16-62-AP 24x24x16 314 1000 1.75 0.125 6

2 120*F 80 115 AF-GG16-62-NP 24x24x16 3/4 1000 1.75 0.125 6

2 120'F 84 119 AF-GG16-62-WP 24x24x16 3/4 1000 3.90 0.125 6

2 120*F 96 131 AF-GG16-62-TP 24x24x16 3/4 1000 3.90 0.125 6

2 120*F 96 131 AF-GG18-62-AP 24x24x18 3/4 1250 1.75 0.125 6

2 1207F 79 127 AF-GG18-62-NP 24x24x18 3/4 1250 1.75 0.125 6

2 120°F 86 131 AF-GG18-62-WP 24x24x18 314 1250 4.10 0.125 6

2 120°F 98 140 AF-GG18-62-TP 24x24x18 3/4 1250 4.10 0.125 6

2 120*F 100 140 15

ATTACHMENT 8 HE A Fites Orerin Inomto fo

-ro Ordering Information: Cinersorb Disposable Carbon Adsorbers Note: A P may vary by +/- 20% due to physical characteristics of the carton. These variations must be considered when sizing fans.

Gasket Seal Housings Model Size Rated Approx.

Res.

No. of Bed Max.

Approx. Approx.

Number H xW x D Flow AP Time Beds Depth Temp. Carbon Ship Wt.

Net Wt.

(inches)

(CFM) (In. WG.) (sec.)

(inches)

(Ibs.)

(lbs.)

AG-GC12-101-AP 24x12x11 1/2 500 0.90 0.083 10 1

1207F 23 42 AG-GC12-101-NP 24x12x11'1/2 500 0.90 0.083 10 1

1207F 25 44 AG-GC12-101-WP 24x12x111/2 500 2.00 0.083 10 1

120F 26 45 AG-GC12-101-TP 24x12x111/2 500 2.00 0.083 10 1

120*F 26 45 AG-GG12-101-AP 24x24x111/2 1000 0.90 0.083 10 1

120°F 43 77 AG-GG12-101-NP 24x24x11 1/2 1000 0.90 0.083 10 1

120*F 49 83 AG-GG12-101-WP 24x24x11 1/2 1000 2.00 0.083 10 1

120'F 52 86 AG-GG12-101-TP 24x24x11 1/2 1000 2.00 0.083 10 1

120'F 52 86 AG-GG12-62-WP 24x24x11 1/2 700 1.75 0.125 6

2 200°F 59 162 AG-GG12-62-TP 24x24x111/2 700 1.75 0.125 6

2 200'F 59 162 AG-GG16-81 3/8-AP 24x24x16 1000 0.85 0.125 8

11/8 120"F 74 113 AG-GG16-813/8-NP 24x24x16 1000 0.85 0.125 8

1V/8 120'F 79 118 AG-GG 16-81 3/8-WP 24x24x16 1000 2.10 0.125 8

13/8 120"F 88 127 AG-GG16-813/8-TP 24x24x16 1000 2.10 0.125 8

13/8 120'F 88 127 AG-GG16-121-AP 24x24x16 1000 0.5 0.125 12 1

120'F 120 78 AG-GG16121-NP 24x24x16 1000 0.5 0.125 12 1

120'F 120 78 AG-GG16-62-AP 24x24x16 1000 1.75 0.125 6

2 120"F 80 115 AG-GG16-62-NP 24x24x16 1000 1.75 0.125 6

2 120'F 84 119 AG-GG16-62-WP 24x24x16 1000 3.90 0.125 6

2 1207F 96 131 AG-GG16-62-TP 24x24x16 1000 3.90 0.125 6

2 120*F 96 131 AG-GG18-62-AP 24x24x18 1250 1.75 0.125 6

2 120F 92 127 AG-GG18-62-NP 24x24x18 1250 1.75 0.125 6

2 120F 96 131 AG-GG18-62-WP 24x24x18 1250 4.10 0.125 6

2 120F 105 140 AG-GG18-62-TP 24x24x18 1250 4.10 0.125 6

2 120*F 105 140 16

ATTACHMENT 8 HEG Fites Typ

// Tra Cabo Adob Type II Tray Carbon Adsorbers The Flanders/CSC Type II adsorber meets the design and performance criteria of IES-RP-CC-008-84, "Recommended Practice for Gas-Phase Adsorber Cell.' It is primarily used by the nuclear industry. The Flanders/CSC Type II cell exhibits a minimum mechanical efficiency of 99.9% when tested in accordance with that standard.

The Flanders/CSC Type II cell incorporates two 2-inch beds. Three cells are designed to be modular with a 1000 CFM HEPA filter in both flow rate and size. By using multiple Type II cells, any required flow rate can be obtained.

The Flanders/CSC Type II cell is made of 300-Series stainless steel. Dimensions are maintained to assure conformance with the requirements of IES-RP-CC-008-84, "Recommended Practice for Gas-Phase Adsorber Cells." It is designed, manufactured and tested under a quality assurance program that meets the basic requirements of ASME NQA-1, "Quality Assurance Program Require-ments for Nuclear Facilities."

Application Type II Tray adsorbers are designed so that three cells in parallel are modular with a 1000 CFM HEPA filter. These adsorbers are primarily used by the nuclear industry. They are usually installed in large "built-up" banks inside walk-in plenums.

Suggested Specifications Adsorber shall be Flanders/CSC V-2 Type II adsorber tray. The adsorber frame shall be constructed of Type 304 stainless steel and have two (2), 2-inch deep beds. Adsorber screens shall be perforated 26 gage Type 304 stainless steel (0.045" dia. holes, 37% open area) with external reinforcement to prevent distortion during filling with carbon. The adsorber shall be filled with 8 x 16 mesh, granular, activated, impregnated carbon that meets the requirements of Article FF-5000 of ASME/ANSI Standard Type II Tray Carbon Adsorber AG-1-1997, "Code on Nuclear Air and Gas Treatment.' At a rated flow of 333 CFM each shall provide a 0.25 second residence time with an approximate pressure drop of 1.10" water gage. Approximate filled weight of the adsorber is 96 lbs. with a maximum operating tempera-ture of 2000 F. The adsorber shall exhibit a mechanical efficiency of 99.9% when tested in accordance with IES-RP-CC-08-84, "Recommended Practice for Gas-Phase Adsorber Cells." The adsorber shall be designed, manufactured and tested under a Quality Assurance Program that meets the basic requirements of ASME NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities."

Model Number Breakdown (Example)

AG-

-30 Adsorber 30" Tray Length Gasket Seal Type II Tray Adsorber 17

ATTACHMENT 8 HEA Fites Orern Inomto fo Typ Tra Carbon A....be Ordering Information: Type II Tray Carbon Adsorber Flanders/CSC Type II Tray Adsorber Rated Flow Velocity Mechanical Bed A P Approx.

Approx.

through Efficiency Depth Filled Wt.

Ship Wt.

(CFM)

Carbon Bed (inches W.G.)

(lbs.)

(lbs.)

333 40 ft/minute 99.9%

2 inches 0.25 sec.

0.90 (+/-0.30) 105 Standard Options:

Note: Flanders/CSC's Service Division can refill and recertify most types of High Efficiency Gas Adsorbers.

1 2

3 4

5 6

Different length cells Special frame materials Special adsorbents Special faceplate Sample canisters Custom sizes 18

ATTACHMENT 8 HE A Fites

- a.

- ~am n

Sysem Carbon Sampling Canisters In nuclear applications, *US Reg. Guide 1.52 details the frequency of having carbon tested for ability to remove methyl iodide. The sampler devices shown simplify the sample taking procedure. The sampler is removed, the sampler space is blanked off, and the sample is sent to the lab for analysis. No in-place test is required. (Note: If a filter is removed to provide a sample, an in-place test must be performed after the filter is replaced.)

Existing systems can use the compatible Flanders/CSC sampling system for easy conversion.

Carbon 3ampler Blank Off Plug and Canister/Plug Removal Tool (furnished)

Radioactive Iodine Performance Test Flanders/CSC can provide radioiodine testing services on samples of carbon to determine if the samples meet customer specifications. Tests can be expedited to prevent extended downtime of the customer's air filtration system. Tests are performed to latest versions of ASTM-D3803, ASME N509 and ASME AG-1; but, any standard radioiodine testing can be performed.

Customer can also specify custom test parameters, if required.

• US Nuclear Regulatory Commission Regulatory Guide 1.52, "Design, Testing and Maintenance Criteria for Post Accident Engineered-Safety-Feature Atmosphere Cleanup System Air Filtration and Adsorption Units of Light-Water-Cooled Nuclear Power Plants."

Types of Adsorption There are three types of adsorption that concern us: 1. Kinetic, 2. Isotopic Exchange, and 3. Complexing or Chemisorption.

Kinetic: Kinetic adsorption of a gas molecule or chemical vapor is the physical attraction of the molecule to the carbon granule by electrostatic forces. These forces, as they apply to small particles, are governed by van der Waals theories, and these attraction forces are termed van der Waals forces. Since these forces are physical in nature, the forces can be undone by physical effort. Thus, high temperature, high humidity, or other natural causes may cause an adsorbed contaminant to desorb.

Generally, the higher the boiling point, the larger the molecule size, and the lower the melting temperature, the easier the molecule is to kinetically adsorb and the stronger it is held once it is adsorbed.

Isotopic Exchange: A second "adsorption" mechanism is isotopic exchange. Radioactive materials usually have a family of isotopes. If a stable isotope is adsorbed on the carbon initially, an unstable isotopic compound will, when it comes into contact with the stable form of the element, exchange the isotopes. The 19

ATTACHMENT 8 HE A Fites Cabo Sapln Sytm stable form is now on the airborne molecule and the radioactive form is on the molecular structure of the impregnant. An example of this is carbon impregnated with K13. The radioactive form of iodine in the organic form CH31131 will isotopically exchange with the iodine on the carbon. This exchange is nondirectional, meaning the adsorbed (exchanged) radioactive species of iodine may very well exchange again. The result will be a different airborne radioactive methyl iodide molecule. This new radioactive molecule may again isotopically exchange with stable iodides on the carbon in the K13 impregnant, and so on, until the radioactive iodine is delayed long enough to decay into stable xenon.

Complexing or Chemisorption:

A third capture mechanism is chemisorption. This is the actual complexing, attaching chemically, of a radioactive iodine species to a stable impregnant that has the ability to share electrons. Once the iodine is complexed, it does NOT desorb similarly to isotopic exchange.

However, it may desorb similarly to the kinetic adsorption discussed. But if it does, the entire impregnant desorbs from the carbon, not just the iodine. An example of this is to impregnate the carbon with triethylenediamine (TEDA) or some other tertiary amine.

To take advantage of both impregnants and capture mechanisms, carbon can be co-impregnated. This allows the carbon to be used as a kinetic adsorber, an isotopic exchange medium and a complexing agent.

As long as the operating conditions are kept within normal bounds, the carbon will perform as required. It will perform under high humidity conditions and under high temperature conditions better than a carbon with a single impregnant.

Efficiency vs. Penetration There is often confusion between "efficiency" and "penetration" of contaminants through a carbon bed.

Efficiency is the ability for the carbon to remove a desired contaminant. Methyl iodide efficiency, for example, is determined by challenging the carbon with an actual radioactive methyl iodide vapor. The amount of the contaminant upstream of the carbon is known, and the amount that is collected on backup beds is measured. The efficiency of that carbon sample to remove methyl iodide is easily calculated by comparing the counts of the carbon sample to the counts on the backup beds. Test parameters such as temperature and relative humidity greatly affect the efficiency.

Penetration, on the other hand, is a term used to indicate the degree of leak tightness for installed carbon systems. The installed system is subjected to a test gas that is easily adsorbed, such as R-1 1 (trichlorofluoromethane).

The penetration, or by-pass of the R-11, is measured downstream of the filter and that amount is compared to the amount measured upstream of the filter. A penetration value in percent is easily calculated from the collected data. This is also termed mechanical efficiency.

Residence Time Residence time is the term given to the time that a gas stream contacts a carbon bed. For example, if a carbon bed were a foot thick and the air stream moved at one foot per minute, the residence time would be one minute. It would take one minute for the air to move through the bed.

Typically, the carbon bed is 1-inch thick and the air velocity is 40-feet per minute. What would 20

ATTACHMENT 8 HE A

Fites eebnamln System the residence time be in that situation? (0.125 seconds) The residence time can be calculated easily from the following relationships:

RT=5 xD V

Where:

RT = Residence time (seconds)

D

= Depth of carbon bed (inches)

V

= Velocity of gas through bed (feet/min)

Most of the time, the velocity will not be given and must be calculated from the relationship:

V=

Q A

Where:

V

= Velocity of gas through bed (feet/min)

A

= Unbaffled area of carbon bed (sq.ft)

Q

=Quantity of gas flowing through bed (CFM)

Let's take an example from real life: Assume that Q=1,000 CFM and that a single 6 panel, 16-inch deep (in direction of air flow), 2-inch bed depth filter is to be used. To calculate the residence time, first determine the area of the carbon bed. The total area is 12.5 sq. ft. The 12.5 ft2 is determined by actual measurements of the unbaffied bed area on one side of the carbon filter. Therefore:

RT= 5x2 80 RT: 10 80 RT = 0.125 second The concept of residence time is very important from the designer's point of view. That is why Flanders/CSC is taking a lot of time to explain it fully.

Flanders/CSC cannot design a system unless we know either the actual residence time required, or all of the parameters that determine the optimum residence time, (flow rate, contami-nants, concentrations, temperature, humidity, required efficiency, etc.)

The residence time is critical to the chemisorp-tion or complexing phenomena. As the gas enters the bed, it must have time to interact with the impregnants on the carbon. Too little time will mean that the contaminants will not interact completely with the carbon or impregnants. Too much time means that the system is not de-signed efficiently.

In summary, you need to be aware of the important of residence time because the first question we ask about an inquiry for any carbon system is, "What is the residence time requirement?" If you do not know, we will have to determine it before the best system can be designed by our engineering staff.

Capacity The capacity of activated carbon is the percentage of its own weight that an activated carbon can adsorb of a given vapor under certain conditions. Some of these conditions are vapor concentration, temperature, humidity, air velocity, and defined breakthrough.

Example: If 100 pounds of activated carbon adsorbs 15 pounds of benzene before it reaches 21 A

V =

1000 CFM 12.5 ft V = 80 ft/min And:

RT= 5xD V

ATTACHMENT 8 HEA Fitr an Fite Tetig Cabo Sapln System a customer defined breakthrough point of 5 ppm, then the capacity of that activated carbon for benzene is 15%.

Decontamination Factor The Decontamination Factor is the ratio of the concentration of a contaminant in the untreated air to the concentration of the contaminant in the treated air.

If anyone asks what the Decontamination Factor (DF) of a filter is, the answer can be obtained by calculating the RECIPROCAL of the penetration expressed as a fraction, or DF = 1 Pen.

Examples:

2. Carbon filters must:

a Exhibit a minimum mechanical efficiency of 99.9% (i.e., HEGA).

b Use high quality coconut shell activated carbon.

c Be sized for approximately 0.125 second residence time.

3. All filters should be installed in "Bag-in/

Bag-out" housings to protect main-te nance personnel and the environment.

4. Filtration system designs should have provisions for pulling samples of air or carbon for laboratory analysis (to assist in determining when carbon adsorbers need changing).

5. The disposal of hazaradous waste (i.e.,

spent HEPA and HEGA filters) should also be considered. Any HEPA or HEGA filter containing regulated chemicals should be disposed of in accordance with Federal, State and local restrictions.

6. The filtration system must be manufac-tured under a good quality control program such as one that addressed the requirements of ASME NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities."

Penetration 40%

0.1%

5%

Calculation DF = 1 0.40 DF = 1 0.001 DF = 1 0.50 Result DF = 2.5 DF = 1,000 DF = 20 Design Principles for Filtering Dangerous Chemical Contaminants It is generally acknowledged that a properly designed filtration system to remove dangerous chemical contaminants should be as follows:

1. HEPA filters should be used to trap dangerous particulates and protect the carbon filters from collecting particulates and thereby increasing the adsorber's pressure drop.

22

ATTACHMENT 8 HEGA F It s

Geeal Ifratino Carbon an Adsortio Materal The following are some random thoughts and information that will help you form a general idea about carbon filter technology. These comments are to be considered as general axioms, and the reader should be able to "fill in" some of the unknown factors when unusual situations arise.

However, there is no substitute for expert advice and opinion, and the reader is urged to contact Flanders/CSC for answers to any technical problem, specific questions or additional information.

1 Elemental iodine is adsorbed by attraction of the iodine to the carbon.

This is called Kinetic adsorption.

2 Methyl iodide, which comes from elemental iodine (12) combining with methane must be adsorbed by chemisorption, usually in the form of isotopic exchange when KI carbon is used or complexing when TEDA carbon is used.

3 The recommended residence time for methyl iodide is 0.25 seconds residence time per 2-inch bed. Tests have shown that the carbon will perform as required at twice that velocity or half that r esidence time for a limited time period.

4 As the humidity increases, the ability of the carbon to perform is adversely affected.

However, the carbon must perform at 95% relative humidity in order to meet ASME AG-1 requirements.

5 The heavier the molecular weight of a material, the easier it is to adsorb.

6 The higher the boiling temperature of a material, the easier it is to adsorb.

9 The adsorption coefficient of carbon is the amount of a given material that the carbon will adsorb, by weight.

10 Some hard to adsorb materials can be displaced by easier to adsorb materi-als. For example, acetic anhydride may displace acetone.

Acetone may displace acetaldehyde, and acetalde-hyde may displace acetylene.

11 The lower the concentration of a material, the harder to achieve a high removal percentage.

12 One gram of carbon will adsorb one milligram of iodine. The potential inventory of radioiodine in a nuclear power system is very small.

13 Since carbon will adsorb anything adsorbable, it can be poisoned by harmless materials and be unable to adsorb the material that it was designed to control. That is why the carbon should always be protected from vapors that will harm it.

14 Shelf life of carbon in properly packaged drums or in filters having a vapor barrier of some kind can be as long as five (5) years. Flanders/CSC recom-mends that carbon over three (3) years old be retested to assure that it meets the efficiency requirements of the original specifications.

15 Methyl iodide adsorbs-desorbs-adsorbs through the bed, exchanging iodine at each juncture. That is to say, methyl iodide can be radioactive-stable-radio-active-stable until it decays into harm-less xenon.

16 Elemental iodine, once adsorbed, usually stays adsorbed.

7 8

The converse of 5 and 6 is true.

One gram of 60% active carbon (as measured by carbon tetrachloride) has a surface area of about 1,000 square meters.

23