**Recommendations to Appendix E,**

**Planning Guidelines for Protective Actions and Responses for the
Chemical Stockpile**

**Emergency Preparedness Program, Section E.4, 17 May 96**

###  25 August 2000 

**Note:** The guidance presented herein is not intended to supersede or
contradict local, state, or federal building code regulations.

1\. **AIR FILTRATION UNITS**

1.1 **Over-pressure.** Air filtration unit(s) shall be sized to provide
filtered outdoor air to the shelter at a flow rate and pressure
sufficient to maintain an over-pressure of at least 0.1 inches water
gage (IWG) within the shelter. However, the system shall be designed for
a minimum over-pressure of 0.2 IWG to allow for degradation in seals and
variations in temperature and humidity that may affect pressures and
leakage rates of the shelter.

1.2 **Ventilation Rate**. The air filtration unit(s) shall be sized to
provide filtered outdoor air at rates in accordance with ASHRAE Standard
62-1989, "Ventilation for Acceptable Indoor Air Quality". In no case
shall the ventilation rate be less than 5 cubic feet per minute (CFM)
per occupant

1.3. **Filtration Unit**. The air filtration unit shall be one of the
following types:

-   Type I, V-bed per IES-RP-CC-008-84 as modified in Annex B.

```{=html}
<!-- -->
```
-   Military-type unit using the standard Gas-Particulate Filter Set
    (200-CFM, Type II) per MIL-PRF-51527A and 51526A and the 1,000-CFM
    filter housing assembly of the U.S. Air Force FFA 580 filter unit.
    The 1,000-CFM FFA 580 is similar to the 600-CFM FFA 580 (NSN
    4230-01-101-3611 and Air Force Exhibit 412A-81902-62002).

1.4 **Filtration Unit Components**. Each air filtration unit shall
contain a pre‑filter, a high- efficiency particulate air (HEPA) filter,
a single- or dual-stage gas filter, and either a second HEPA or a
95-percent-efficient final filter per ASHRAE 52. Type I commercial
filter units shall have a test gas injection sample port incorporated
upstream of the filters and a test sampling port, downstream. If the
unit incorporates a two-stage gas filter, a test section that injects
the sample gas to test the second stage and sample the first stage shall
be provided. These components shall be arranged so that air passes
through them in the following order: test injection and sample port,
pre-filter, HEPA filter, gas filter, test section (required if a second
stage gas filter is provided), second stage gas filter (if required),
and HEPA or a 95-percent efficient final filter per ASHRAE 52. In-place
test capability is required for the adsorber cells (both stages if a
two-stage system) and for the first HEPA filter. The upstream port for
injection and sampling and the downstream port for sampling shall be
located as specified by ASME N509 and N510. Military filter units shall
have a test sampling port downstream of the filters that allows
isolating leaks that may occur past critical seals to 1000-CFM filter
unit modules.

1.4.1 **Pre‑Filter**. A pre-filter is a roughing filter that has the
purpose of extending the service life of the HEPA filter. At a minimum,
the pre‑filter shall be a Class I, disposable filter in accordance with
UL 900, \"Test Performance of Air Filter Units.\" The pre-filter shall
have a minimum efficiency of 80% when tested in accordance with ASHRAE
52, \"Method of Testing Air Cleaning Devices used in General Ventilation
for Removing Particulate Matter.\"

1.4.2 **HEPA Filter**. The HEPA filter removes particles of micron and
sub-micron size. At a minimum, the HEPA filter shall meet the
requirements of ASME AG-1, "Code on Nuclear Air and Gas Treatment",
Section FC HEPA Filters. For the Type I filter unit, the HEPA filter
shall be of a capacity of 500-CFM, 1000-CFM, or 1500-CFM, as required to
match the flow rate of the adsorber cells.

1.4.3 **Gas Filter.** Gas filters shall contain activated carbon, which
removes stockpile agents (nerve and mustard) by physical adsorption.
Impregnated carbon is not required; however, ASZM-TEDA carbon is allowed
if military filters are provided as Government Furnished Material.
Requirements for the carbon (adsorbent media) and for the adsorber cell
(which contains the carbon) are as specified below.

1.4.3.1 **Filter Residence Time.** The airflow rate of the air
filtration system shall be such that the total residence time in the
system of adsorber cells is 0.19 seconds or greater. For a V-bed type
adsorber cell as described in 1.3.3.3.2, the maximum airflow rate shall
be 500 CFM for a nominal 16 inch deep or 750 CFM for a nominal 20 inch
deep single-stage adsorber system (residence time of 0.25 seconds per
stage) and 1,000 CFM with 16 inch deep adsorber or 1500 CFM for a
20-inch deep adsorber in a two-stage adsorber configuration (residence
time of 0.125 seconds per stage).

1.4.3.2 **Adsorbent Media**. The adsorbent media shall meet the
requirements of ASME AG-1, Section FF, Adsorbent Media, as modified in
Annex A.

1.4.3.3 **Adsorber Cell**. The adsorber cell shall meet the requirements
of either:

1.4.3.3.1 **Type I, V-Bed Filters.** These filters shall be per
IES-RP-CC-008-84 as modified in Annex B.

1.4.3.3.2 **Military filter units.** Gas filters shall meet the
requirements of their respective military specifications, except that
carbon and acceptance testing for the carbon shall be as specified in
Annex A.

1.4.4 **Housing**. For Type I filter units, the housing, shall meet the
requirements specified in Annex C, Housing Requirements.

1.4.5 **Certification**. The supplier of the air filtration unit shall
provide written certification that the unit and its filters meet the
specified requirements.

1.5 **Fan Location**. If the air filtration unit is located outside the
pressurized shelter (protected envelope), the fan of the filtration unit
shall be upstream of the filters (push-through configuration). If the
filtration unit is located inside the pressurized shelter, the fan shall
be located downstream of the filters (pull-through configuration).

1.6 **Fan External Static Pressure.** The fan external static pressure
(ESP) drop shall include the static pressure airflow resistance of all
equipment to include the heating, cooling, filtration system with dirty
filters, and ductwork apparatus. The fan shall be capable of
accommodating a change in resistance across the HEPA filter equal to 2
IWG, for a total pressure drop when dirty of 3 IWG. (See Section 4.6 for
HEPA filter change out criteria.) The fan shall have a manual volume
control damper such as an inlet vortex damper or a duct-mounted opposed
blade volume control damper.

1.7 **Protection of Filter Units.** Air filtration units located
outdoors shall be protected from weather to prevent water damage to the
filters or filter housing (See Annex C, Housing Requirements of Type I
filter units). The air filtration units shall be installed within a
security enclosure to protect against vandalism and theft of components.

1.8 **Mode of Operation.** The air filtration system shall be of the
standby type; that is, air does not flow through the particulate filters
or carbon adsorbers during normal (non-emergency) operation of the
heating, ventilation and air conditioning (HVAC) system.

2\. **SYSTEM REQUIREMENTS**

2.1 **Auxiliary Power Unit**. An auxiliary power unit (APU, emergency
generator) shall be connected in line to provide power in the event of
electrical power loss. Controls/ indicators for APU operation shall be
located within the shelter, adjacent to the main control panel. The
emergency generator shall be capable of operating continuously for 8
hours without refueling. The distance between the exhaust from the APU,
or from any fuel generator, to the filter air intake shall be as
specified in the Uniform Building Code.

2.2 **Heating System.** For filtration units that require a supplemental
fuel-fired indirect (i.e. heat exchanger) heating system to maintain
internal facility temperatures will also require a carbon monoxide
detector, with visual readout and audible alarm to be placed in the
shelter. For shelters with supplemental heating systems that do not have
indirect fuel heating (i.e. electric coil, hot water coil, etc.) will
not require a carbon monoxide detector. Direct fuel fired heating
systems are not allowed. Fuel fired heating systems that utilize on-site
fuel storage tank to provide fuel shall be capable of operating
continuously for 8 hours without refueling.

2.3 **Outdoor Design Conditions.** The outdoor design temperature for
comfort cooling will be the 2.5% dry bulb and the mean coincident wet
bulb temperature. The outdoor design temperature for comfort heating
will be the 97.5% dry bulb temperature as indicated in the 1997 ASHRAE
Handbook of Fundamentals.

2.4 **Indoor Design Conditions.** The summer indoor design condition
will be 78 degrees Fahrenheit dry bulb at 50% relative humidity and the
winter indoor design condition shall be 68 degrees Fahrenheit.

2.5 **Operation of Fans in the Building**. In cases where the protected
envelope or zone is a portion of the building, an interlocking system
shall be employed to turn off the air handling units, exhaust fans, and
outside air fans of the building\'s unprotected zone(s) while in the
protective mode.

2.6 **Entrances**. Entry into and exit from the shelter must be
controlled to prevent the loss of over-pressure. All doors leading into
the shelter shall have latches to prevent their being opened from the
outside and to allow entry to be controlled from inside the shelter.
These latches shall allow unrestricted emergency exit from the shelter,
as required by the life safety code. Permanent labels shall be affixed
to each boundary door stating that it must remain closed tightly during
pressurization. Interior doors that must remain open during
pressurization (if necessary to ensure flow to all parts of the
protective envelope) must be so labeled. Limit switches, or equivalent,
shall be attached to each shelter door to indicate complete closure.

2.7 **Toilets**. Each shelter shall provide access to standard or
expedient toilet facilities within the pressurized envelope.

2.8 **Drinking Water.** Each shelter shall provide drinking water within
the pressurized envelope.

3\. **CONTROLS AND INDICATORS**

3.1 **Control Panel.** The system shall have a central control panel
(shelter manager's station) located within the protective envelope
(pressurized shelter). Controls and indicators at this station shall be
such that transition to the protective mode can be made rapidly and
simply (e.g., one‑button operation). This station shall have the
following, at a minimum:

3.1.1 Two independent gauges indicating the level of over-pressure
(relative to ambient air pressure) within the shelter. The gauges shall
be marked with the required minimum over-pressure level (0.1 IWG).

3.1.2 Controls and indicators for the auxiliary power unit.

3.1.3 An hour-meter to show the cumulative time the air filtration
system has been operated.

3.1.4 A means to communicate with the County Emergency Management Agency
office.

3.1.5 A diagram of each protected envelope (separate shelter area)
within the facility showing the locations of the system's dampers,
filtration unit, auxiliary power unit, boundary doors, control panel,
and sensors.

3.1.6 A quick-reference placard with condensed operating instructions,
presented in a manner that allows an untrained person to turn on the
system in the event that the trained operator is not available. To
facilitate operation by an untrained person, each of the boxes that
contain system controls and indicators must be clearly marked.

3.1.7 A copy of the operation and maintenance manual.

8.  Visual indicators or status lights to show the position of each
    damper and boundary door that must be open/closed for system
    pressurization. Each indicator shall be marked with a reference
    number so that an operator can quickly determine the location of any
    damper/door and conduct troubleshooting.

9.  A push-to-test button for control panel lights.

```{=html}
<!-- -->
```
1.  Gauge(s) for reading the pressure drop across the pre filters and
    HEPA filters of the filtration unit. **[Note]{.underline}**: These
    gauge(s) may be mounted on the filtration unit.

3.3 **Impact Protection.** In cases where the protective envelope is or
includes a gymnasium, protective covers shall be provided for
wall-mounted components such as sensors, gauges, or dampers that are
located where they can be damaged by balls during normal gym activities.

3.4 **Damper Markings.** To facilitate troubleshooting and maintenance,
each damper required for pressurization shall be marked with labels that
may be easily read by a person standing on the floor and which:

[]{.mark}

-   Identify each damper with the corresponding damper identification on
    the control panel (e.g., D-4).

-   Warn of the damper's criticality by stating: "Damper is critical to
    the operation of the emergency pressurization system. Do not modify
    or disable it."

-   Describe the operational configuration of each damper arm position.
    For example, "Normal, Open"; "Normal, Closed"; "Emergency, Open";
    "Emergency Closed". As a visual aid, the damper arm shall be of a
    contrasting color.

4\. **OPERATION AND MAINTENANCE INSTRUCTIONS**

An operation and maintenance manual shall be prepared specifically for
each collectively protected facility. Upon approval, four copies of the
manual shall be provided for each facility: one copy attached to the
main control panel, one filed in the main office, one in the facility
engineer\'s records, and one to the county emergency management office.
The following is required content of the manual.

4.1 **System Description, General**. This section shall include a
description of what the system consists of, how it operates, the
function each major component, and how the system protects its
occupants. This shall be written for a non-technical operator.

4.2 **System Description, Detailed**. This section shall include a
description and photograph of each of the main components of the system,
to include the location (e.g. room number) and diagram with leaders to
identify particular components. Among these are the filter unit(s),
control panel(s), dampers, door and damper position switches, circuit
breakers, terminal panels, controllers, switches, and pressure sensors.
For dampers and doors, designation numbers (e.g. damper D-1) shall be
cross-referenced with the control panel markings. This section shall
also describe the boundaries of the protected zone (addressing upper and
lower boundaries as well as the floor plan). This shall also include
technical information on the filter unit, to include rated flow, type
and mesh size of carbon, residence time, and certifications of filter
unit configuration, in-place leak testing, and flow and balance testing.

4.3 **Operating Instructions**. This section shall include detailed
operating instructions along with diagrams and photos of controls and
dampers so that the user can locate these components and employ visual
indicators for ensuring proper operation. A reproduction of the
condensed operating instructions/checklist for placing the system into
operation and shutting down the system shall also be included, as well
as a list of interior doors that must remain open.

4.4 **Troubleshooting Instructions**. This section shall include a
troubleshooting guide for both user repair actions and specialized
repair actions by maintenance personnel. The troubleshooting guide shall
include specific actions to be taken to isolate and correct
malfunctions; generally, the approach is to list the condition (such as
low over-pressure) or malfunction that may occur followed by a list of
steps to be taken to isolate and correct the problem. Photos shall
accompany these instructions to facilitate finding and identifying the
component. For emergency troubleshooting, this shall cover expedient
means for correcting problems, such as manually closing dampers or
applying duct tape around a door if weather stripping has been damaged.

4.5 **Maintenance Instructions**. This section shall include
step‑by‑step procedures for removing, replacing, disassembling,
assembling, and testing components, assemblies, sub‑assemblies, and
attachments that are subject to wear, malfunction, frequent replacement,
damage, and testing. These instructions shall be presented as a
combination of text and photos/illustrations, including a chart with
schematic diagrams and/or a separate inspection checklist indicating
what should be examined for wear or possible malfunction (e.g. bearings,
valves, weather stripping, etc.). This section shall include the
following:

-   Safety precautions and warnings to be observed in working on the
    system.

```{=html}
<!-- -->
```
-   Periodic maintenance checks and recommended frequency, to include
    the checks listed in Section 5.2.

```{=html}
<!-- -->
```
-   A reduced-size copy of the facility\'s HVAC and electrical drawings
    applicable to the system operation and maintenance.

```{=html}
<!-- -->
```
-   Wiring and control diagrams with explanations of how the control
    system operates, to include describing the sequence of control with
    control diagrams. It shall address all controlled or controlling
    items of equipment including damper actuators, heat pumps,
    condensing units, temperature sensors, flow sensors, controller, all
    relays, etc. The sequence for all switch, valve, and damper
    positions shall also be described.

```{=html}
<!-- -->
```
-   Maintenance requirements for the equipment, including the electrical
    generator, shall be specified in accordance with the manufacturer\'s
    recommendations to ensure that warranties remain valid. This shall
    also include checks not within the scope of the warranty, such as
    battery replacement frequency, fuel additives for winter operation,
    refueling, and change frequency of lubricants and coolants.

```{=html}
<!-- -->
```
-   Lubrication schedule with schematic diagram of the equipment showing
    lubrication points, recommended types and grades of lubricants, and
    capacities.

```{=html}
<!-- -->
```
-   A listing of recommended spare parts, expendable supplies, special
    tools, and equipment to have on hand for maintaining the system.
    This list shall include recommended quantities, part numbers, and
    sources (including addresses and phone numbers) for repair parts
    specific to the system such as gauges, dampers, filters, and fans.

```{=html}
<!-- -->
```
-   A List of companies or organizations qualified for special servicing
    of the system, such as in-place filter leak testing, changing
    filters, balancing air flows. This list shall include addresses and
    phone numbers of the service companies.

4.6 **Replacement of HEPA Filters and Pre-Filters**. Maintenance
instructions shall state the maximum allowable pressure drop across HEPA
filters and pre-filters, which may accumulate dust and develop a higher
resistance to flow over time. To minimize the impact of filter
resistance on flow rate, periodic tests shall be specified for measuring
the pressure drop across the filter system and change filters or adjust
the manual flow control damper of the fan to maintain the design
airflow. HEPA filters shall be replaced when:

-   Visual examination indicates there is physical damage.

-   The pressure drop across the filters exceeds the specified limit or
    when an increase in airflow resistance causes the airflow to the
    shelter to fall below the minimum value for maintaining shelter
    pressure.

-   In‑place testing shows a mechanical leak.

4.7 **Replacement of Gas Filter**. Maintenance instructions shall
include the criteria for replacing gas (carbon) filters. Filters shall
be replaced when:

-   Visual examination indicates physical damage.

-   In‑place testing shows a mechanical leak.

-   DMMP breakthrough life test, in accordance with Annex B, but without
    rough handling of the adsorber cell, done on one adsorber cell per
    filter unit fails to meet the criteria of Annex B. This destructive
    sampling shall be performed after 1,000 hours of filter operation or
    5 years after gas filter installation, whichever is first.
    Replacement filters will be Government furnished.

-   After exposure to chemical stockpile agents. The filter manufacturer
    may replace filters as part of routine maintenance. However, the
    U.S. Army Chemical Activity shall change the filters if they have
    been exposed to chemical agents.

5\. **SYSTEM TESTING**

5.1 **Initial System Verification Test**. Upon installation of system
components, the following testing shall be performed to verify system
performance and integrity.

5.1.1 **Initial Pressurization Test.** The shelter shall be operated for
a period of 8 hours. Readings of internal shelter pressure and pressure
drop across the filters shall be taken every half-hour during this
operation. Internal shelter pressure shall be greater than the minimum
over-pressure specified in Section 1.1 throughout the test period.
Position indicators for dampers and controls shall be tested for proper
response.

5.1.2 **Initial In-Place Filter Test.** In-place filter testing shall be
conducted to verify that filters have been installed properly, that
there are no leaks between the mounting frame and housing or within the
mounting frame, that there are no bypasses, and that the filters have
not been damaged. Except as noted below, testing is performed in
accordance with American National Standard ASME N510, \"Testing of
Nuclear Air Treatment Systems\". For testing the carbon filter,
decafluoropentane (HFC 43-10, Vertrel) is a suitable alternative to
freon R-11. For testing the HEPA filter, paraffin hydrocarbon Emery 3004
is a suitable alternative to DOP for use as the upstream challenge
agent. Emery 3004 may also be called Ethylflow 164 or Durasyn 164.
Upstream and downstream readings shall be repeatable within ± 5% of full
scale of the respective previous readings. The following test criteria
shall apply to the *installed* gas and HEPA filters:

5.1.2.1 For the gas filter (carbon adsorber): the downstream
concentration of the refrigerant gas shall not exceed 0.1% of the
upstream concentration.

5.1.2.2 For the HEPA filter, the total test aerosol penetration through
the filter shall not be greater than 0.03% of upstream concentration*.*

5.1.3 **Component Verification Test**. Each component shall be inspected
and tested

upon installation and periodically to ensure proper operation. At a
minimum, the testing shall include:

-   Cycling dampers and determining that position indicators on control
    panel accurately shows whether each damper is open or closed

-   Operating the auxiliary power unit

-   Measuring the flow rate of filtered air on both line power and APU
    power

-   Measuring the over-pressure in the shelter with the installed
    pressure gauges and an independent pressure gauge, on both line
    power and APU power

-   Operating the heating/cooling equipment integrated with the
    protective system

-   Checking for proper operation of door limit switches

-   Checking carbon monoxide detectors (if applicable)

    2.  **Annual Operational Test and Maintenance**. System verification
        testing, in-place filter testing, and component verification
        testing shall be performed on an annual basis. Additional
        maintenance inspections identified in the operation and
        maintenance manual shall be performed per the maintenance
        schedule. These shall include, as a minimum:

```{=html}
<!-- -->
```
-   Performing in-place filter testing. Prior to in‑place filter
    testing, the seals, gaskets and filters shall be visually inspected,
    and components showing damage or deterioration shall be replaced.

```{=html}
<!-- -->
```
-   Operating the system continuously for 8 hours (with one hour of this
    period on APU power), recording over-pressure readings hourly

-   Operating cooling and heating equipment integrated with the
    protective system

-   Measuring the rate of airflow from the filtration unit.

-   Recording the pressure drop across the pre-filter and HEPA filter
    while operating, and if necessary adjusting the manual flow control
    damper of the fan to rebalance the system to maintain the design
    airflow rate.

```{=html}
<!-- -->
```
-   Inspecting weather stripping on doors and replacing it as necessary

```{=html}
<!-- -->
```
-   Examining the filter unit for corrosion or weather damage,
    vandalism, wear and tear

-   Examining control panels, dampers, and sensors for damage due to
    wear and tear or vandalism and repairing/replacing as necessary.

```{=html}
<!-- -->
```
-   Checking and adjusting door position switches and strike-plates

```{=html}
<!-- -->
```
-   Exercising all dampers and checking linkages for tightness

```{=html}
<!-- -->
```
-   Inspecting the maintenance log for regular engine and filter unit
    operation

```{=html}
<!-- -->
```
-   Checking for penetrations or modifications made to the building
    shell that may affect leakage and pressurization of the protective
    envelope

-   Checking for the proper response of position indicators

-   Checking and replacing indicator light bulbs as necessary

-   Checking signage on doors for damage and replacing as necessary

```{=html}
<!-- -->
```
-   Performing yearly maintenance checks, per manufacturers
    recommendations, for the heating and cooling equipment integrated
    with the protective system, recording the following in a log:
    cooling coil report (entering and leaving air temperatures and
    results of visual inspection of the cooling coil), chiller report
    (fluid temperatures and set-points), refrigerant report (refrigerant
    temperatures and pressures), and compressor report (starts and hours
    of operation).

```{=html}
<!-- -->
```
-   Reporting any anomalies that may cause the system to malfunction.

    3.  **Monthly Operational Test**. The following maintenance actions
        will be specified in the operation and maintenance manual for
        performance monthly by the user.

```{=html}
<!-- -->
```
-   Operating the system for one half-hour and recording the
    over-pressure.

```{=html}
<!-- -->
```
-   While operating, recording the pressure drop across the pre-filter
    and HEPA filter. If necessary adjust the manual flow control damper
    of the fan to rebalance the system to maintain the design airflow.

```{=html}
<!-- -->
```
-   Exercising all dampers through at least three open-and-close cycles.

-   Operating the APU.

-   Operating the heating/cooling equipment (as appropriate for the
    season) integrated with the system.

5.4 **Testing Upon Replacement of Filters**. In-place filter testing
shall be performed following replacement of gas adsorbers or HEPA
filters. Seals and gaskets shall be visually inspected upon replacing
filters and those showing damage or deterioration shall be replaced
before in-place filter testing is performed.

6\. **TRAINING**

6.1 **Operator**. Operational instructions, troubleshooting guidance,
specification data, and training shall be provided for the system and
its major components.

2.  **Shelter Operator**. The designated shelter operator and alternate
    shall be trained in:

-   How to start, operate and shut down the system.

-   The procedures of the operation and maintenance manual, to include
    troubleshooting.

-   Operations under unusual, as well as normal conditions.

-   The characteristics and physiological effects of the chemical agents
    stored at

> the chemical facility.

7 **DESIGN DOCUMENTATION**

The architect-engineer shall submit a design analysis (DA), basis for
design, for government review with the first submission of drawings
(concept design). The DA will present information describing parameters,
functional and technical requirements, design objectives, design
assumptions, and design calculations. The DA shall include a sub-part
for each major discipline (structural, mechanical, architectural,
electrical) with justifications and design calculations to validate
design decisions.

7.1 Requirements specific to chemical protection in the architectural
section are:

-   Rationale for selecting/defining the protected envelope.

```{=html}
<!-- -->
```
-   Data on the protected envelope: height, area, estimated number of
    people to be sheltered, floor area per person, number of toilets,
    and number of people per toilet by gender.

```{=html}
<!-- -->
```
-   Information on penetrations, ceiling types, and leakage areas that
    substantially affect the cost, complexity, performance, and
    reliability of the system.

```{=html}
<!-- -->
```
-   Number, condition, and types of doors on the boundary. Number of
    interior doors that must remain open or be modified for
    pressurization of all areas of the protected envelope.

```{=html}
<!-- -->
```
-   Number, condition, and type of windows on the boundary.

7.2 Requirements specific to chemical protection in the mechanical
section are:

-   A detailed description of the procedures, equipment, and results of
    fan-pressurization test(s), to include approach, list of openings
    temporarily sealed and unsealed, fans which were on/ deactivated,
    dampers closed/open, ambient wind and temperature.

```{=html}
<!-- -->
```
-   A description and diagram of the existing HVAC system, to include
    number of air handling units, exhaust fans, and normal flow rates to
    each room or zone.

```{=html}
<!-- -->
```
-   A description of existing ducts that are to be pressurized outside
    the boundary of the protected zone and likely sealing measures
    required for each.

```{=html}
<!-- -->
```
-   An evaluation of using existing heating and air conditioning systems
    for tempering the filtered air supply in a way that avoids
    low/negative pressure areas at the boundary.

```{=html}
<!-- -->
```
-   A list of all ducts, vents, transfer grilles at which automatic or
    manual dampers are required for pressurization, to include duct
    sizes and special requirement (e.g. for kitchen hoods). A list of
    all fans that must be deactivated in transitioning to the protected
    mode and method of switching selected.

```{=html}
<!-- -->
```
-   Selection criteria, performance, and pertinent specifications for
    dampers, fans, filter unit components, makeup air ducts.

```{=html}
<!-- -->
```
-   Calculations for filter unit sizing, to include estimates based on
    fan-pressurization data, damper leakage data, sealing measures to be
    applied and estimated reduction in leakage to be achieved by these
    measures.

```{=html}
<!-- -->
```
-   Resistance calculations for ducts, and components of the filter unit
    to confirm that filter-unit fan is adequate to maintain required
    flow rate as resistance of filters increase with loading.

```{=html}
<!-- -->
```
-   Purge rate calculations for any active airlocks required.

```{=html}
<!-- -->
```
-   Internal and external heating and cooling building load calculations
    for sizing the heating and air conditioning systems, noting the
    winter and summer design conditions applied in calculations. Heating
    and cooling equipment design calculations and performance data from
    manufacturers of proposed equipment.

```{=html}
<!-- -->
```
-   Cut sheets for proposed mechanical equipment.

```{=html}
<!-- -->
```
-   Calculations of makeup air requirements based on occupancy.

```{=html}
<!-- -->
```
-   Calculations on the load, fuel supply and storage capacity of the
    diesel generator. Information on the available capacity and
    condition of existing generator(s).

-   Description and explanation of design features that are not required
    by this appendix.

7.3 Requirements for the electrical section are:

-   Design load calculations.

```{=html}
<!-- -->
```
-   Technical descriptions of existing and new electrical systems and
    components, including manufacturer's data on proposed equipment.

```{=html}
<!-- -->
```
-   Description of control system and sequence of control.

```{=html}
<!-- -->
```
-   Description of control system operation, showing how interrupts are
    included for existing equipment that must be deactivated in the
    pressurized mode.

**ANNEX A**

**EXCEPTIONS to SECTION FF, ASME AG-1**

**REQUIREMENTS for ADSORBENT MEDIA**

**A.1** Disregard all references to impregnation of the adsorbent media
(carbon) and

to radioiodine removal.

**A.2 FF-2000 References**. Disregard reference to ASTM D 3803 and to
ASTM D 4069.

**A.3 FF-5120 After Impregnation.** At the end of paragraph (b), add the
following:

"Adsorbents of smaller particle size than that reflected by this
requirement are

also acceptable. However, smaller particle sizes will result in
increased airflow

resistance. Consideration must then be given to the impact of a smaller

particle size on the airflow resistance of the filter in which the
adsorbent is

used. Otherwise, the air moving system may not be able to provide the

necessary airflow to the shelter."

**A.4 FF-5200 Radioactive Testing**. Delete this entire subarticle and
replace with:

"FF-5200 Simulant Breakthrough Testing

In addition to the specifications for physical properties of activated

carbon, this Article also requires testing of the adsorbent with a nerve

agent simulant to verify nerve agent and mustard agent removal

capabilities. The simulant dimethylmethylphosphonate (DMMP) has been

demonstrated to adequately represent the filtration performance of
filters

containing activated carbon for the removal of nerve agent Sarin (GB)
from air.

Since GB is the most weakly adsorbed of all nerve agents and mustard

agents, DMMP performance is an adequate assessment of an activated

carbon's ability to filter all nerve and mustard agents.

FF-5210 Carbon Lot Acceptance Testing

Each production lot of activated carbon shall undergo DMMP breakthrough

testing to ensure that adequate adsorption of agents occurs. The minimum

breakthrough time is 50 minutes when tested as follows:

Challenge Concentration: 3,000 ± 400 mg/m3

Breakpoint Concentration: 0.02 mg/m3

Relative Humidity: Less than 30 %

Carbon Conditioning Prior to Test: None

Temperature: 24 ± 3 degrees Celsius

Bed Depth: 5.1 cm

Airflow Velocity: 20 cm/sec

Minimum Diameter of Test Container: 5 cm

While the challenge concentration is permitted to vary within the stated
range during the course of the test, the breakthrough time measured must
be normalized to the 3,000 mg/m3 concentration by the following
calculation:

Corrected breakthrough time = Measured breakthrough time × Average
concentration during test ÷ 3,000 mg/m3

**A.5 FF-5300 Acceptable ASTM Standards.** Delete this entire
subarticle.

##  ANNEX B

**EXCEPTIONS to IES-RP-CC-008-84**

**for Type I Cell**

B.1 **SCOPE.** Make the following changes:

B.1.1 **Classifications.** Change

> **FROM:** " a) Type I Pleated-bed cell
>
> **TO:** " a) Type I V-bed cell

B.1.2 **Adsorbent Specifications.** Delete and replace with the
following:

> " **1.2** **Adsorbent Specifications**.
>
> The adsorbent material used in these cells shall be in full compliance
> with
>
> ASME AG-1, Section FF, Adsorbent Media, as modified by Annex A."

B.2 **REFERENCES AND APPLICABLE DOCUMENTS.** Add the following:

> **"2.9.1** ASME AG-1-1994: Code on Nuclear and Gas Treatment.

**2.9.2** MIL-STD-282: Filter Units, Protective Clothing, Gas-Mask
Components

and Related Products: Performance-Test Methods

**2.10** MIL-STD-282 - Technical Director, US Army Edgewood Research,

Development and Engineering Center,

ATTN: SCBRD-ENE-D, 5183 Blackhawk Road,

Aberdeen Proving Ground, MD 21010-5423\"

B.3 **DEFINITIONS AND TERMS.** No Changes.

B.4 **Leak Performance Requirements**. Delete this paragraph
[entirely]{.underline} and replace with the following:

" **4. Requirements**.

> A new cell, when filled with the specified adsorbent material
>
> shall meet the requirements specified in Table 1 and in this section.
>
> **Table 1. Test Criteria**

4.1 **Airflow Resistance**.

> The airflow resistance shall be 1.7 ± 10% IWG at the rated air flow
> with an air stream temperature of 70 degrees Fahrenheit and a
> barometric pressure of 29.92 inches (760 mm) Hg when tested in
> accordance with paragraph 7.1. Cells that do not meet this requirement
> shall be rejected.
>
> 4.2 **Refrigerant Leak Test**.
>
> Cells shall be tested as specified in paragraph 7.2. During the test,
> the downstream concentration of the refrigerant gas shall not exceed
> 0.0005 times the upstream concentration. Cells that do not meet this
> requirement shall be rejected.
>
> 4.3 **Dimethylmethylphosphonate (DMMP) Breakthrough Life Test**.
>
> The adsorber cell being destructively tested for DMMP gas life value
> as specified in paragraph 7.3 shall not permit the penetration of 0.02
> micrograms of DMMP per liter of air for a minimum of 20 minutes when
> subjected to the rated air flow at 125 degrees Fahrenheit, at less
> than 40 percent relative humidity and having an inlet concentration of
>
> 5.0 ± 0.1 milligrams of DMMP per liter of air.
>
> 4.4 **Design Requirements.**
>
> Each adsorber cell shall meet the design and construction requirements
> specified in paragraph 6 and paragraph 7.5. Each cell shall have a
>
> minimum residence time of 0.250 seconds (see note 9.1).
>
> 4.5 **Materials Requirements.**
>
> The adsorber cell shall meet the materials requirements as specified
> in paragraph 5 and paragraph 7.6.
>
> 4.6 **Workmanship.**
>
> The adsorber cell shall be free of burred or bent metal sections,
> damaged gaskets, and foreign matter such as dirt, oil or viscous
> material. "
>
> B.5 **MATERIALS REQUIREMENTS**. Make the following changes:
>
> B.5.1 **Adsorbent**. Delete this paragraph and replace with:
>
> "The adsorbent material shall be in compliance with ASME AG-1, Section
> FF as modified by Annex A. "
>
> B.5.2 **Metal Parts.** The cell adsorber frame shall be made of T-304
> stainless steel or an alternate equivalent material compatible with
> system design.
>
> B.5.3 **Adsorbent Bed Screens.** No Changes.
>
> B.5.4 **Gaskets and Seal Pads**. Delete and replace with the
> following:
>
> "5.4 **Gaskets and Seal Pads**.
>
> Face gasket materials shall be EPT/Polyethylene/Butyl rubber meeting
> the requirements of ASTM D 1056, RE-42."
>
> B.5.5 **Adhesive**. No changes.
>
> B.5.6 **Threaded Fasteners**. No changes.
>
> B.6 **DESIGN AND CONSTRUCTION**. Replace Figure 1. *Typical Type I*
> *Cell* with new Figure 1. Make the following additional changes:

![](media/image1.wmf)

> B.6.1 **Type I (Pleated-Bed Cell) Cell.** Change title:
>
> **FROM:** " Type I (Pleated-Bed Cell) Cell "
>
> **TO:** " Type I (V-Bed) Cell "
>
> B.6.1.1 **General**. Delete this paragraph entirely and replace with
> the
>
> following:
>
> " 6.1.1 **General.**
>
> The cell shall consist of minimum 2 inch thick adsorbent beds in "V"
> configurations enclosed on four sides by a nonperforated case which
> extends the full depth of the bed and has a minimum 0.75 inch flange
> all around each face."
>
> B.6.1.2 **Adsorbent Bed**. Delete entirely and replace with the
> following:
>
> "6.1.2 **Adsorbent Bed**
>
> The cell shall consist of 6 separate carbon beds configured as three
> "V"s as shown in Figure 1. The design shall be such that the adsorbent
> from any of the beds cannot pass (such as from settling) into another
> of the beds. Screens shall have minimum 3/4 inch wide margins around
> the perimeter of each bed."
>
> B.6.1.3 **Case**. Delete entirely and replace with the following:
>
> "6.1.3 **Case**
>
> The case should consist of four 14-gauge minimum nonperforated panels
> fastened together at the short sides. Panels should have single-turned
> flanges on both long sides and either single- or double-turned flanges
> on the short sides. Fasteners should be spaced no more than 2.75 in.
> (77 mm) apart. Case panels should be assembled so that the tolerances
> of Paragraph 6.1.4 are maintained on the gasketed face of the cell.
> Side panels should have heavy stainless steel stiffeners so that, when
> assembled to the cell, the side panels will be flat within the
> tolerance specified in Paragraph 6.1.4 after filling of the cell, and
> the seal-pad compression of Paragraph 6.1.4 is met."
>
> B. 6.1.4 **Dimensions and Tolerances of Assembled and Filled Cell.**
>
> Make the following changes:
>
> a\. "**Depth, less gasket**": change **from**: "11.5 inch (292 mm) "
>
> **to:** "16.0 inch ( 406 mm)
>
> or 20.0 inch (508 mm)".
>
> b\. "**Bed Depth**" change **from**: "1 in.+ .125 in., -0 (25.4 mm +
> 3.2 mm, - 0)"
>
> **to:** " 2.0 in. minimum"

B.6.1.5 **Cell Assembly**. Make the following change:

> In sentence 3, delete the word "removable".
>
> B.6.2 **Filling.** Delete this paragraph and replace with the
> following:
>
> " 6.2 **Filling**
>
> Cells shall be filled with adsorbent meeting the specified
> requirements. After filling, adsorbent fines shall be removed from the
> beds by blowing with clean, dry, oil-free compressed air or by
> vacuuming."

B.6.3 **Marking**. Make the following change:

> a\. **FROM**: " Number of this practice: IES-RP-CC-008-83-T"
>
> **TO**: " Number of this practice: IES-RP-CC-008-84 as modified by the
> Purchaser."

B.7 **QUALITY ASSURANCE REQUIREMENTS**. Delete this paragraph
[entirely]{.underline} and replace with the following:

> " 7 **QUALITY ASSURANCE REQUIREMENTS**.
>
> The manufacturer shall maintain an objective quality control and
> inspection program to ensure:

-   Materials specified are actually used in the manufacture of the
    cells.

```{=html}
<!-- -->
```
-   Non-specified materials are not used.

```{=html}
<!-- -->
```
-   Parts, subassemblies, and completed cells are manufactured within
    specified requirements.

```{=html}
<!-- -->
```
-   Written procedures covering these activities shall include steps to
    remedy nonconformance.

> 7.1 **Airflow Resistance**.
>
> Each cell to be delivered to the Purchaser shall have been tested
> prior to packaging as specified in paragraph 7.1.1. Airflow resistance
> and certification the cells meet the performance requirement of
> paragraph 4.1 shall be marked on each cell in accordance with
> paragraph 6.4. Any cell not meeting the airflow resistance requirement
> of paragraph 4.1 shall be rejected.
>
> 7.1.1 **Airflow Resistance Test**.
>
> Install the cell in the test tunnel in its service orientation and
> adjust airflow through the cell to 500 ± 5% SCFM (16-inch deep cell)
> or 750 ± 5% SCFM (20-inch deep cell). Record the barometric pressure.
> Measure and record the air stream temperature. Determine and record
> the difference in the static pressure head upstream of the cell to
> that downstream of the cell. The test fixture resistance must be
> subtracted so that the recorded resistance is that of the cell.
>
> 7.1.2 **Adjustment for Non Standard Test Conditions.**
>
> If testing occurs at nonstandard conditions, calculate and record the
> airflow resistance (∆ P (cal)) using the equation below to correct
> test measurements to standard conditions:
>
> ∆ P (cal) = \[ P(test) x ∆P(measured) x 86.21\] ÷ \[ (460 **+** T)
> ^1.768^ \]
>
> **LEGEND**:

**∆ P (cal)** = air flow resistance corrected to standard conditions in
IWG

> **P (test)** = barometric pressure at time of test in millimeters of
> mercury

**∆ P (measured)** = value recorded from test measurement in IWG

**T** = actual temperature of air stream flowing through the cell in °F

> 7.2 **Refrigerant Leak.**
>
> Each cell to be delivered to the Purchaser shall have been tested
> prior to packaging as specified in paragraph 7.2.1. Each cell shall
> meet the performance requirement of paragraph 4.2. Any cell not
> meeting this requirement shall be rejected.
>
> 7.2.1 **Refrigerant Leak Test.**
>
> Install the cell in the test tunnel in its service orientation and
> adjust airflow to 500 ± 25 SCFM (16-inch deep cell) or 750 ± 25% SCFM
> (20-inch deep cell). The cell shall be challenged with a refrigerant
> vapor (R-134a or equivalent) at a concentration equivalent to at least
> 20,000 times the minimum sensitivity of the monitor used to measure
> filter leakage.
>
> The challenge-gas injection port shall be located in such a manner to
> ensure uniform mixing of the tracer gas. The downstream test port
> shall be located to ensure a representative sample. Qualification data
> to verify test port selection shall be on file for inspection upon
> request.
>
> The leak tracer chemical (refrigerant) shall be injected continuously
> into the filter influent over an interval sufficient to ensure the
> effluent monitor is capable of accurately measuring the required
> leakage level. This duration should be at least twice the response
> time of the effluent monitor to the tracer chemical injected in the
> normal manner. This response time can be checked at the time of
> calibration of the effluent monitor. To accurately measure response
> time, the standard gas mixture must flow (at the sampling flow rate
> used during testing) to the monitoring equipment through the entire
> sample line used in the conduct of the testing. The response time is
> the duration from the start of sampling to the attainment of a stable
> response from the monitor. When a monitor is used to exclusively
> sample the filter effluent stream, only one sample, taken at twice the
> system response time, need be quantified. If the same monitor is used
> to quantify the influent and effluent streams, at least three
> determinations must be taken at each location. The first of these
> determinations shall be no earlier than the system response time.

7.3 **DMMP Breakthrough Life**.

> Eight cells which are filled with an adsorbent meeting the specified
> requirements shall be randomly selected by the Purchaser from the lot.
> ***(NOTE: The lot size shall equal the required deliverables PLUS the
> eight cells to undergo this destructive testing.)*** Each test cell
> shall be hardmounted to a rough handling machine in its service
> orientation and vibrated for 10 minutes at a frequency of 200 cycles
> per minute at an amplitude of 3/4 inch (19.1 mm) +/- 1/8 inch in
> accordance with MIL-STD-282, Test Method 105.11. Immediately following
> the rough handling, the cells shall be DMMP breakthrough life tested
> in accordance with paragraph 7.3.1 at the same test facility the cells
> were rough handled in order to minimize carbon redistribution. If at
> least one cell fails to meet the criteria of paragraph 4.3, the lot
> shall be rejected. The filling procedure must be adjusted and another
> lot submitted for DMMP breakthrough life test.
>
> 7.3.1 **DMMP Breakthough Life Test**.
>
> Just prior to running the DMMP test, measure and record airflow
> resistance data for the sample cell and calculate airflow resistance
> at standard conditions as indicated in paragraph 7.1.2.
>
> \(a\) Install cell in test tunnel in its service orientation. Adjust
> airflow to 500 SCFM ± 5% (for 16-inch deep cell) or 750 SCFM ± 5% (for
> 20-inch deep cell). The test shall be run to cell life. The cell shall
> be tested for DMMP breakthrough life at the following test parameters:

Challenge Concentration: 5,000 ± 400 mg/m3

Breakthrough Concentration: 0.02 mg/m3

Relative Humidity: less than 40%

Temperature: 45 ± 5 degrees Celsius

> \(b\) For the adsorber cell to be acceptable, the breakthrough time
> for the DMMP concentration of the filter effluent to increase to 0.02
> mg/m3 shall be 20 minutes or greater. While the challenge
> concentration is permitted to vary within the stated range during the
> course of the test, the breakthrough time measured must be normalized
> to the 5,000 mg/m3 concentration by the following calculation:

Corrected breakthrough time = Measured breakthrough time X Average
concentration during test x 5,000 mg/m3

> \(c\) The DMMP vapor in air challenge concentration shall be created
> to ensure uniform mixing of the DMMP vapor with the air once it
> reaches the test cell. Qualification testing to verify the DMMP vapor
> concentration is uniform across the cell face shall be on file and
> available for inspection.
>
> \(d\) The test tunnel shall be operated at the rated flow. The inlet
> face
>
> of the cell shall be challenged as specified above. The test shall be
>
> run to the life of the cell. The total time from the start of the cell
> challenge until the breakthrough concentration is reached (i.e. the
> life of the cell) shall be recorded as the breakthrough time.
>
> \(e\) This DMMP breakthrough life test requires expensive and

unique test equipment. A source for this testing is:

> Non-Surety Test Team, Engineering Directorate,
>
> U.S. Army Edgewood Research, Development and Engineering Center
>
> Aberdeen Proving Ground, MD 21010-5423
>
> \(410\) 436-2284
>
> \(410\) 436-4804 (FAX)
>
> Please contact this office for further assistance.

7.4 **Design.**

> Each adsorber cell shall meet the design and construction requirements
> as specified in paragraph 6.

7.4.1 **Dimensional Inspection**.

> Each cell shall be gauged or measured to verify conformance with the
> dimensions and tolerances specified in paragraph 6. Particular
> attention shall be paid to the quality of gasket-seating surfaces,
> including flatness, planarity, squareness, and surface defects. In
> these cells, close attention shall also be given to offsets between
> flange surfaces of adjacent case panels, gaps between adjacent case
> panels and projections which extend into the plane of the
> gasket-seating surface on the gasketed face of the cell (see Figure
> 1).
>
> 7.4.2 **Weld Inspection**.

All spot and seam welds shall be inspected and shown to be sound and

free of cracks. Lack of fusion, roughness, and other defects that could

present a hazard to personnel handling the cells shall be eliminated.

Particular attention shall be given to excessive dimpling or waviness of

gasket-seating surfaces of the cells caused by spot welding (see

paragraph 6.1.4).

> 7.5 **Materials Requirements**.
>
> 7.5.1 **Metal Parts**.
>
> A positive materials control and identification procedure shall be
>
> maintained to ensure the specified materials are used, and that
>
> nonspecified materials are not used in the cells. The manufacturer
>
> shall procure materials in accordance with applicable documents,

and the materials control system shall be adequate to permit

> positive correlation of the materials used in the cells with the
>
> corresponding document.
>
> 7.5.2 **Adsorbent**
>
> A positive materials control and identification procedure shall be
>
> maintained to ensure that the specified adsorbent is used and that
> nonspecified but similar-appearing adsorbents are not used. When
> specific physical properties, performance requirements, or both, are
> specified in the purchaser's order, the manufacturer should furnish
> certified copies of test reports to the purchaser. Laboratory tests
> may be performed either by the manufacturer or an independent testing
> agency approved by the purchaser. Except for specific
> type-qualification tests that will be made on typical lots of the
> material, tests should be made on the lot of adsorbent actually used
> to fill the cells. When tests of properties and performance are not
> specified by the purchaser, the manufacturer shall furnish a report
> showing typical properties and performance for the contaminant of
> interest to the purchaser.
>
> B.7.6 **Documentation**.
>
> The carbon adsorber cell manufacturer shall provide the purchaser with
> the following documentation upon shipment:

-   Table and/or schematic identifying outline or significant interface
    dimensions

```{=html}
<!-- -->
```
-   Certified list of materials

```{=html}
<!-- -->
```
-   Adsorbent type and its certified test reports

```{=html}
<!-- -->
```
-   Welder qualification

```{=html}
<!-- -->
```
-   Certified test reports for all performance requirements specified in

> paragraph 4.

-   Certification of compliance with packaging and shipping requirements
    specified in paragraph 8.

> B.8. **PACKAGING AND SHIPPING**. No changes.
>
> B. 9 **NOTES.** Add the following new paragraph:
>
> " 9. **Notes.**
>
> 9.1 The residence time shall a minimum 0.250 seconds and shall be
>
> determined by the procedure specified in Mandatory Appendix
>
> FE-I, ASME AG-1-1994.
>
> 9.2 Reference to metric dimensions is for information only."

**ANNEX C**

## Housing Requirements for Type I Filter Units

C.1 **SCOPE**. These requirements apply to the Type I filter units. The
housing shall provide a complete airtight enclosure from the air inlet
to the air outlet connections. The housing shall contain the required
particulate (pre- and HEPA) filters and the adsorber cells (gas carbon
filters). All necessary framing and structural

supports for the filters and adsorbers shall be furnished as an integral
part of the housing.

C.2 **APPLICABLE DOCUMENTS**.

C.2.1 ERDA 76-21 - Nuclear Air Cleaning Handbook, C. A. Burchsted, A.B.
Fuller, J. E.

Kahn, reproduced by US Department of Commerce, National

Technical Information Service, Springfield VA 22161

C.2.2 ASME N509 - Nuclear Power Plant Air-Cleaning Units and Components.

C.2.3 ASME N510 - Testing of Nuclear Air Treatment Systems.

C.2.4 ASTM D 1056 - Standard Specification for Flexible Cellular
Materials - Sponges

or Expanded Rubber

C.3 **REQUIREMENTS.**

C.3.1 Materials.

C.3.1.1 All portions of the housing that constitutes the housing's
pressure boundary shall

be made from minimum 14 gage. T-304 stainless steel sheet metal and
adequately reinforced

to withstand both a negative or positive pressure of 15 inches water
gage (IWG). All hardware of the housing shall be 300-series stainless
steel except where moving parts might cause galling. In such cases,
nonferrous metals may be substituted, such as brass (threaded nuts in
locking mechanisms) or cast aluminum (access door knobs).

C.3.1.1.1 Each housing bank shall be fitted with instrumentation for
measuring the differential pressure. This instrumentation shall be sized
and located to be read easily by the operator and shall have the
capability of being remotely located. Gauge ports shall consist of 1/4
inch IPS SST, half couplings seal welded to housing side with brass
adapter fitting to 1/4 inch OD tubing, capped.

C.3.1.1.2 Each housing bank shall be fitted with sufficient sampling
test ports to permit

acceptance in-place testing. In order to obtain a reliable test sample,
turbulent flow shall be required upstream of the area where the sampling
probes shall be located. If turbulent flow is not present, a suitable
baffle shall be installed. Test ports shall be 3/8 inch IPS SST half
couplings with brass hex head plugs. Each aerosol and refrigerant leak
test connection shall be identified with a descriptive nameplate. Each
nameplate shall be stainless steel with 1/8 inch minimum height letters
and shall be welded to the housing at the appropriate location

C.3.1.2 All welding shall be performed by qualified welders and
procedures in accordance with

ASME N509, Section 7.3

C.3.1.2.1 All pressure retaining joints and seams shall be continuously
welded. Non-pressure

retaining joints, such as exterior stiffening, may be intermittently
welded. As a minimum, all

weld joints and seams shall be wire brushed and/or buffed to remove heat
discoloration,

oxidation, all burrs and sharp edges. All weld joints and seams that are
a portion of any gasket

setting surface (i.e., duct connecting flanges and component sealing
surfaces) shall be ground

smooth and flush with adjacent base metals. All weld joints shall be
visually inspected for

cracks, crater pits, underfill, incomplete fusion, overlaps, surface
porosity, gas pockets, crevices

and depressions.

C.3.1.3 Face gasket materials shall be EPT/Polyethylene/Butyl rubber
meeting the requirements of ASTM D-1056-91, RE-42.

C.3.2 Components.

C.3.2.1 Each housing shall accommodate the specified particulate filters
and carbon adsorbers and shall not require special attachments or
devices to function properly in the housing. Each particulate filter to
housing sealing surface and each adsorber to housing sealing surface
shall

meet the flatness tolerance for filter mounting frames recommended in
ERDA 76-21, Table 4-2.

C.3.2.2 Each tier of each bank of particulate filters and adsorber cells
shall have a separate,

removable access door- each door opening outwards. A component removal
device shall be supplied for each tier of components more than one
component wide. The removal device shall consist of 2 pull rod
assemblies that act independently of each other. The removal device
shall be designed to allow the component to be removed by pulling
against the top and/or bottom of the component.

C.3.2.3. Mounting frames and clamping devices for all components shall
meet the requirements of ASME N509, Section 5.6.3.

C.3.3 Shipment and Installation.

C.3.3.1 Flanges on the inlet and outlet of the housing shall be factory
drilled for bolted duct

connections. Bolt holes shall not exceed 4 inches on center as
recommended in ERDA 76-21.

All bolted flange connections shall be turned out so that bolts do not
penetrate pressure boundary.

C.3.3.2 Each housing shall be fitted with lifting lugs and skid-mounted
to facilitate handling during shipping and installation.

C.3.3.3 For outdoor installation, the system shall be weather-proof.

C.4 **QUALITY ASSURANCE**

C.4.1 The manufacturer shall factory proof test each housing bank by
performing an airflow distribution test as specified in ASME N510,
Section 8. Each test shall meet the

acceptance criteria of Section 8.6.

C.4.2 The manufacturer shall factory proof test each housing for
component fit. With the test

fixture installed in the housing, the component clamping mechanism shall
be checked

for proper operation. Each component sealing surface shall be checked
with a flatness gauge

and shall meet the flatness tolerance for component mounting frames
recommended in

ERDA 76-21, Table 4.2.

C.4.3 The manufacturer shall perform pressure decay tests for structural
rigidity and to verify the absence of leaks through the seal welds of
the particulate filters and/or adsorber frames, and between the frames
and the housing as specified in ASME N510, Section 7.

C.4.4 The manufacturer shall perform pressure decay tests on the entire
housing system i.e., inlet to outlet) as specified in ASME N510, Section
6. Perform both positive and negative pressure decay testing up to 10
IWG. The leak rate shall not be greater than 0.2% of the volume of the
housing, per hour, at test pressure noted. This leak rate is per Table
4.5 of ERDA 76-21. The housing system shall not show any damage or
permanent deformation.

C.4.5 Housings shall be visually inspected in the shop prior to shipping
as specified in

ASME N509, Section 5.6.5.2.

C.4.6 Housing drawings showing applicable specifications required in
ASME N509,

Section 5.6.2 (g) shall be submitted to the owner.

C. 5 **PACKAGING.** The housing system shall be shall be crated or
skidded, or both, in a manner that will protect the item from physical
damage and exposure to dirt, weather (including road spatter), and
vibration during shipment and subsequent storage at the installation
site. Housing openings larger than 6 inches shall be covered with
weather resistant panels thick enough, or reinforced adequately to limit
deflection to less than one half of the panel thickness under a pressure
of 3 IWG. Panels shall be bolted to flanges or otherwise attached so
they cannot be torn during shipping. Each opening 6 inches and smaller
shall be sealed or capped with plastic plugs.

C.6 **DOCUMENTATION**. As a minimum, the following shall be documented
and submitted to the owner:

**[Documentation]{.underline}** **[Ref. Paragraph]{.underline}**

HEPA and Adsorber clamping device drawings C.3.2.3

Factory airflow distribution results C.4.1

Test pressure and pressure decay results C.4.3 and C.4.4

Factory inspection of housing C.4.5

Housing drawings C.4.6