o p y

National Institute for Occupational Safety and Health

d C National Personal Protective Technology Laboratory

e
P.O. Box 18070

o l l y
Pittsburgh, PA 15236

t r o p
Procedure No. TEB-CBRN-STP-0502 Revision: 0.0 Date: 21 November 2006

o n d C
c e
DETERMINATION OF CBRN ACID GASES (CYANOGEN CHLORIDE) SERVICE

Un ll
LIFE TEST, TIGHT-FITTING POWERED AIR-PURIFYING RESPIRATORS (PAPR)

o
STANDARD TEST PROCEDURE (STP)

1.
n t r
PURPOSE
p y
c o C o
Un d
This test establishes the procedure for ensuring that the level of protection provided by the CBRN

le
Acid Gases (Cyanogen Chloride) Service Life Test, Tight-Fitting Powered Air-Purifying

l
Respirators Standard Test Procedure submitted for Approval, Extension of Approval, or

r o p y
examined during Certified Product Audits, meet the minimum certification standards set forth in

t o
42 CFR Part 84, Subpart G, 84.63(a)(c)(d); Volume 60, Number 110, June 8, 1995 and the

c o n C
Statement of Standard for Chemical, Biological, Radiological, and Nuclear (CBRN) Powered

d
e
Air-Purifying Respirator (PAPR).

U n
2. GENERAL
o l l
n tr p y
o
This STP describes Determination of CBRN Acid Gases (Cyanogen Chloride) Service Life Test,

c o C
Tight-Fitting Powered Air-Purifying Respirators Standard Testing Procedure in sufficient detail

d
Un
that a person knowledgeable in the appropriate technical field can select equipment with the

l e
necessary resolution, conduct the test and determine whether the product passes the test.

l
3.
r o
EQUIPMENT AND MATERIAL

o py
o n t C
d
3.1. The list of necessary test equipment and materials follows:

c l e
Un l
3.1.1. Miller Nelson Research Model 401 Flow-Temperature-Humidity Control System

tr o
or equivalent. This system is an automated system to control the airflow,

y
temperature and humidity of an air supply for an operating system. Laboratory

o n o p
air and distilled water are supplied to the unit. The unit output is air of the

c C
variable volume/flow dependant on the size of unit (10% of max flow to max

Un d
flow in Lpm ± 2%), and relative humidity (10-98 ± 3%) and temperature (20-30
0

l e
C ± 0.3%).

l
3.1.2.

t r o py
EdgeTech Dew Prime II Hygrometer, Model 2000 or equivalent. A micro-

o
n C
processor based programmable chilled mirror dew point hygrometer. The

o d
hygrometer uses the dew point and ambient temperature to calculate the relative

n c e
humidity. Ambient temperature range is: -50ºC to 130ºC ± 0.2ºC; relative

l
U l
humidity is 1% to 95% ± 0.5%

Approvals
t r o
First Level
c o n Second Level Third Level Fourth Level

Un
 Procedure No. TEB-CBRN-STP-0502
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3.1.3. Labview software developed for NIOSH Service Life Testing.

r o o p y
t
3.1.4. California Analytical Instruments, Model 1314 Photoacoustic Multigas Monitor

o n d C
with UA0985 optical filter or equivalent. This monitor uses photoacoustic

c e
infrared detection to measure gases that absorb infrared light. A filter is used to

Un o ll select the wavelength specific for the gas being detected. Range for cyanogen
chloride is 1000 to 0.1 ppm ± 0.01 ppm. Two detectors are used, one for

n t r y
challenge concentration and one for downstream concentration

p
c o 3.1.5.

C o
Mass Flow Controller, Brooks Instruments, variable flow rate depending on use.

Un le
3.1.6.

l
dRead out and Control Electronics, Brooks Instruments, Model 0154. Power
supply and controller for the Brooks Mass Flow Controller or equivalent. The

t r o p y
flow controllers are an integrally mounted control valve module with which

o
stable gas flows can be achieved. Various flow rates are used with an accuracy of

c o n C
± 0.7 % of rate and ± 0.2 % full scale.

d
U n 3.1.7.

l le
Dry Test Meter, American Meter Co., model and size depending on air flow to be

o
measured. Must have NIST traceable calibration certificate.

n tr p y
o
3.1.8. Cyanogen chloride cylinder, 99 % purity, with regulator and purge valve.

c o d C
Un
3.1.9. Kin-Tek491 MB Basic Gas Standards Generator with cyanogen chloride

l l e
permeation tubes that are certified to NIST standard or equivalent.

3.2

r o py
Test fixture for mounting canisters.

o
o n t C
d
3.3 The test chamber consisting of an air tight box with door opening lined with gasket

c e
material. Two fittings located on the test chamber for the introduction of the test

l
Un l
concentration and for the exit of the test fixture. This fixture is not commercially
available

tr o y
3.4
n o p
Resistance tester equipment as described in standard test procedures RCT-APR-0003 and

o
c C
RCT-APR-0007.

Un
3.5
l e d
Airflow measurement equipment as described in standard test procedure RCT-APR-
0012.
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t r o o py
n
4. TESTING REQUIREMENTS AND CONDITIONS

c o d C
e
4.1 For tight-fitting PAPR, this test procedure is only valid if the respirator system has first

U n l l
completed NIOSH Standard Test Procedure entitled Durability Conditions Process For

o
Environmental, Transportation And Rough Handling Conditions On Chemical

t r
Biological, Radiological and Nuclear (CBRN) Respiratory Protective Devices (RPD)

n
Standard Conditioning Procedure (SCP).

c o
Un
4.2 Prior to beginning any testing, all measuring equipment to be used must have been
 Procedure No. TEB-CBRN-STP-0502
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calibrated in accordance with the manufacturer's calibration procedure and schedule. At a

o l l minimum, all measuring equipment utilized for this testing must have been calibrated

y
p
within the preceding 12 months using a method traceable to the National Institute of

n t r o
Standards and Technology (NIST).

C
c o 4.3
e d
Any laboratory using this procedure to supply certification test data to NIOSH will be

l
Un l
subject to the provisions of the NIOSH Supplier Qualification Program (SQP). This

o
program is based on the tenets of ISO/IEC 17025, the NIOSH Manual of Analytical

n t r y
Methods and other NIOSH guidelines. An initial complete quality system audit and

p
follow on audits are requirements of the program. Additional details of the Program and

c o C o
its requirements can be obtained directly from the Institute.

Un 4.4

le d
Precision and accuracy (P&A) must be determined for each instrument in accordance

l
with laboratory procedures and NIOSH/NPPTL guidance. Sound practice requires, under

t r o p y
NIOSH Manual of Analytical Methods, demonstrating a tolerance range of expected data

o
performance of a plus or minus 25% of a 95% confidence interval of the stated standard

c o n C
requirement. NIOSH/NPPTL P&A tolerance can be higher but not lower.

d
U n 4.5
le
Compressed gas cylinders must meet all applicable Department of Transportation

l
o
requirements for cylinder approval as well as retesting / requalification.

n tr p y
o
4.6 Normal laboratory safety practices must be observed. This includes safety precautions

c o C
described in the current NIOSH Pittsburgh Health and Safety Program.

d
Un l e
4.6.1. Safety glasses, lab coats and hard-toe shoes must be worn at all times.

r o l py
t o
4.6.2. Workbenches must be maintained free of clutter and non-essential test

n C
equipment.

c o l e d
Un
4.6.3 When handling any broken glass laboratory equipment, lab technicians and

r o l
personnel must wear special gloves, which protect against lacerations or
punctures.

n t o p y
o
4.7 Please refer to Material Safety Data Sheets and the NIOSH Health and Safety

c C
Un
Manual for the proper protection and care in handling, storing, and disposing of the

e d
chemicals and gases used in this procedure.

l
r o l py
t o
5. PROCEDURE

Note:

c o n d C
Reference Section 3 for equipment, model numbers and manufacturers. For calibration

U n le
purposes use those described in the manufacturer's operation and maintenance manuals.

l
5.1
r o
Follow individual instruction manuals for set up and maintenance of equipment used in

t
n
this procedure prior to beginning testing. Malfunctioning equipment must be repaired or

o
replaced and properly set up and calibrated before starting all tests.

c
Un
5.2 Calibrate both photoacoustic monitors for cyanogen chloride using the Kin-Tek gas
 Procedure No. TEB-CBRN-STP-0502
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generator and cyanogen chloride permeation tubes. The challenge monitor is calibrated

o l lfor the challenge concentration of 300 ppm and the downstream monitor is calibrated for

y
p
the breakthrough concentration of 2 ppm. Make any necessary adjustments to the

n t r o
Labview software so that the concentration display on the software agrees with the

C
o
detector.

c l e d
Un l
5.3 Set up test equipment as shown in Figure 1. The humidity reading controlled by the

o
Miller Nelson system and monitored the Dew Point Hygrometer. The sample pickup for

n t r y
the hygrometer is place into the air stream via a tee after the Miller Nelson and before the

p
introduction point of challenge agent. The thermocouple for the hygrometer is placed in

c o C o
the challenge gas stream immediately before the test chamber.

Un 5.4

le d
Verify the following equipment is on:

l
t r o
5.4.1

p y
Air and water supplies.

o
c o n 5.4.2
C
Miller Nelson Unit.

d
U n 5.5
le
Establish the correct humidity and temperature as per the test standard in paragraph 6.3.

l
5.6

tr o y
Set the required airflow for the system. Individual canisters will be tested by dividing

o n o p
115 Lpm by the number of air-purifying elements on the system. See appendix 8.2.

C
Verify the airflow from the test fixture using the appropriate dry test meter.

c d
Un l e
5.7 Weigh and record initial weight of the test canister on Test Data Sheet.

5.8

r o l py
Take and record initial airflow measurements in accordance with RCT-APR-012. See

n t C o
section 84.1152 (b) Title 42, Code of Federal Regulations, Part 84 for minimum airflow

o d
requirements.

c l e
Un l
5.9 Take and record initial inhalation resistances for tight-fitting PAPR in accordance with

t o
RCT-APR-007. See Sections 84.122, 84.203, 84.1157 Title 42, Code of Federal

r y
Regulations, Part 84 for breathing resistance requirements.

o n o p
c C
5.10 Mount canister onto test fixture and place in testing chamber.

Un
5.11
l e d
Ensure that the nitrogen gas is ready for immediate flushing of regulator through the
purge valve.
l
t r o o py
n
5.12 Turn on the cyanogen chloride cylinder.

c o d C
e
5.13 Establish the test concentration of 300 ppm ± 30 ppm cyanogen chloride.

U
5.14n o l l
Once the cyanogen chloride concentration has been established, testing may begin.

5.15
n t r
Direct challenge concentration airflow into test chamber.

c o
Un
5.16 Start timer. Airflow out of the fixture is directed into the breakthrough detector. Monitor
 Procedure No. TEB-CBRN-STP-0502
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and record the upstream and downstream temperatures of the air stream throughout

o l ltesting. Record breakthrough values and times.

y
t r
5.17
o p
Run test until breakthrough of 2 ppm is observed or selected service life time is

o n C
surpassed. Record this data on the test data sheet.

d
c l e
Un l
5.18 Direct challenge concentration airflow out of test chamber.

t
5.19
r o y
Weigh and record final weight of the test canister on Test Data Sheet.

o n o p
c C
5.20 Take and record final airflow measurements in accordance with RCT-APR-012. See

Un d
section 84.1152 (b) Title 42, Code of Federal Regulations, Part 84 for minimum airflow

le
requirements.

l
5.21

t r o p y
Take and record final inhalation resistances for tight-fitting PAPR in accordance with

o
RCT-APR-007. See Sections 84.122, 84.203, 84.1157 Title 42, Code of Federal

c o n C
Regulations, Part 84 for breathing resistance requirements.

d
U n 5.22
le
Allow clean air to purge through system for 5 minutes.

l
5.23

tr o y
Repeat steps 5.5 through 5.21 for each test described in section 6.3.

o n o p
C
5.24 When all tests are completed turn off cyanogen chloride cylinder, set temperature and

c d
Un
humidity to zero and allow air to pass through the system for 30 minutes.

l l e
6.

r o
PASS OR FAIL CRITERIA

o py
o n t C
d
6.1. The criterion for passing this test is set forth in 42 CFR Part 84, Subpart G,

c e
84.63(a)(c)(d); Volume 60, Number 110, June 8, 1995.

l
Un 6.2.
o l
This test establishes the standard procedure for ensuring that:

r
n
84.63
t o p y
Test requirements; general.

c o C
Un d
(a) Each respirator and respirator component shall when tested by the applicant and

l e
by the Institute, meet the applicable requirements set forth in subparts H through

l
L of this part.

t r o o py
n
(c) In addition to the minimum requirements set forth in subparts H through L of this

c o C
part, the Institute reserves the right to require, as a further condition of approval,

d
e
any additional requirements deemed necessary to establish the quality,

U n l l
effectiveness, and safety of any respirator used as protection against hazardous

o
atmospheres.

(d)
n t r
Where it is determined after receipt of an application that additional requirements

c o will be required for approval, the Institute will notify the applicant in writing of

Un
these additional requirements, and necessary examinations, inspections, or tests,
 Procedure No. TEB-CBRN-STP-0502
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stating generally the reasons for such requirements, examinations, inspections, or

o l l tests.

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t r
6.3.
o p
Acid Gases (Cyanogen Chloride) Test for CBRN Canisters

o n d C
c e
6.3.1 Inhalation resistance to airflow of system will be taken before and after each test

Un o ll
6.3.2 Airflow measurements of system must be taken before and after each test.

n t r 6.3.3
p y
Three canisters will be tested at the determined, continuous air flow, 25 % ± 2.5

c o o
% relative humidity (RH), 25 oC ± 2.5 oC and 300 ppm cyanogen chloride.

C
Un l
6.3.4

l e dThree canisters will be tested at the determined, continuous air flow, 80 % ± 2.5
% relative humidity (RH), 25 oC ± 2.5 oC and 300 ppm cyanogen chloride.

t r o
6.3.5
o p y
Minimum service life will be 15, 30, 45, 60, 90 or 120 minutes as per

c o n C
manufacturer request. End of service life concentration is 2 ppm cyanogen

d
e
chloride.

U n o l l
7.

tr
RECORDS AND TEST SHEETS

n p y
o
7.1.

c C o
All test data will be recorded on the DETERMINATION OF CYANOGEN CHLORIDE

Un d
SERVICE LIFE test data sheet.

l l e
y
7.2. All videotapes and photographs of the actual test being performed, or of the tested

r o p
equipment shall be maintained in the task file as part of the permanent record.

t o
o
7.3.
n d C
All equipment failing any portion of this test will be handled as follows:

c l e
Un l
7.3.1. If the failure occurs on a new certification application, or extension of approval

tr o
application, send a test report to the TEB Team Leader and prepare the hardware

y
for return to the manufacturer.

o n o p
c C
7.3.2. If the failure occurs on hardware examined under an off-the-shelf audit the

Un d
hardware will be examined by a technician and the TEB Team Leader for cause.

l e
All equipment failing any portion of this test may be sent to the manufacturer for

l
examination and then returned to NIOSH. However, the hardware tested shall be

t r o py
held at the testing laboratory until authorized for release by the Branch Chief, or

o
n
the Branch Chief’s designee, following the standard operating procedures

c o C
outlined in Procedure for Scheduling, and Processing Post-Certification Product

d
e
Audits, RB-SOP-0005-00.

U n o l l
8. APPENDIXES

n t r
8.1

c o
Bench Top Set-Up

Un
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8.2 Airflow calculations

o l l y
p
8.3 Test Data Sheet

n t r C o
c o l e d
Un r o l
n t o p y
c o C
Un l le d
t r o o p y
c o n d C
U n l le
tr o y
o n o p
c d C
Un l l e
y
t r o o p
o n d C
c l e
Un r o l
n t o p y
c o C
Un l l e d
t r o o py
c o n d C
U n l le
t r o
c o n
Un
 Procedure No. TEB-CBRN-STP-0502
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Appendix 8.1: Bench Top Set-Up

r o o p y
o n t C
c l e d
Un r o l
n t o p y
c o C
Un l le d
t r o o p y
c o n d C
U n l le
tr o y
o n o p
c d C
Un l l e
y
t r o o p
o n d C
c l e
Un r o l
n t o p y
c o C
Un l l e d
t r o o py
c o n d C
U n l le
t r o
c o n
Un
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Appendix 8.2: Service life testing airflow calculations.

r o
Tight-fitting PAPR

o p y
o n t C
d
___________ Number of filtering elements on a tight-fitting PAPR System.

c l e
Un o l
115 Lpm airflow

n t r p y
Airflow for service life test = 115 Lpm / number of filtering elements

c o C o
Un l le d
o y
Test Flow

n t r o p
4 Canisters

c o d C
3 Canisters 2 Canisters 1 Canister

U n 28.8 Lpm
l le
38.3 Lpm 57.5 Lpm 115 Lpm

tr o y
o n o p
c d C
Un l l e
y
t r o o p
o n d C
c l e
Un r o l
n t o p y
c o C
Un l l e d
t r o o py
c o n d C
U n l le
t r o
c o n
Un
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Appendix 8.3: Test Data Sheet

r o o p y
o n t C
c l e d
Un r o l
n t o p y
c o C
Un l le d
t r o o p y
c o n d C
U n l le
tr o y
o n o p
c d C
Un l l e
y
t r o o p
o n d C
c l e
Un r o l
n t o p y
c o C
Un l l e d
t r o o py
c o n d C
U n l le
t r o
c o n
Un
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r
Revision
o Date

o p y Reason for Revision

o n t C
21 November 2006 Original Issue

c l e d
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