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TITLE 42 - PUBLIC HEALTH
CHAPTER I - PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES
SUBCHAPTER G - OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES
PART 84 - APPROVAL OF RESPIRATORY PROTECTIVE DEVICES
subpart i - GAS MASKS
Tables to Subpart I of Part 84
Table 5_Canister Bench Tests and Requirements for Front-Mounted and Back-Mounted Gas Mask Canisters [42 CFR part 84, subpart I] -------------------------------------------------------------------------------------------------------------------------------------------------------- Test atmosphere ---------------------------------------------------- Maximum Minimum Flow rate Number of allowable service Canister type Test condition Concentration (liters tests penetratin life Gas or vapor (parts per per (parts per (minutes) million) minute) million) \1\ -------------------------------------------------------------------------------------------------------------------------------------------------------- Acid gas................................ As received SO2 20,000 64 3 5 12 Equilibrated Cl2 20,000 64 3 5 12 ........................ SO2 20,000 32 4 5 12 ........................ Cl2 20,000 32 4 5 12 Organic vapor........................... As received CCl4 20,000 64 3 5 12 Equilibrated CCl4 20,000 32 4 5 12 Ammonia................................. As received NH3 30,000 64 3 50 12 Equilibrated NH3 30,000 32 4 50 12 Carbon monoxide......................... As received CO 20,000 \4\ 64 2 (\3\) 60 Equilibrated CO 5,000 \2\ 32 3 (\3\) 60 ........................ CO 3,000 \2\ 32 3 (\3\) 60 Combination of 2 or 3 of above types \5\ Combination of all above types \6\ -------------------------------------------------------------------------------------------------------------------------------------------------------- \1\ Minimum life will be determined at the indicated penetration.
\2\ Relative humidity of test atmosphere will be 95 3pct; temperature of test atmosphere will be 25 2.5 C.
\3\ Maximum allowable CO penetration will be 385 cm \3\ during the minimum life. The penetration shall not exceed 500 p/m during this time.
\4\ Relative humidity of test atmosphere will be 95 3pct; temperature of test atmosphere entering the test fixture will be 0 2.5 C- 0 C.
\5\ Test conditions and requirements will be applicable as shown in this table.
\6\ Test conditions and requirements will be applicable as shown in this table, except the minimum service lives for acid gas, organic vapor, and ammonia will be 6 min instead of 12 min.
Table 6_Canister Bench Tests and Requirements for Chin-Style Gas Mask Canisters [42 CFR part 84, subpart I] -------------------------------------------------------------------------------------------------------------------------------------------------------- Test atmosphere ------------------------------------------------- Maximum Minimum Flow rate Number of allowable service Canister type Test condition Concentration (liters tests penetration life Gas or vapor (parts per per (parts per (minutes) million) minute) million) \1\ -------------------------------------------------------------------------------------------------------------------------------------------------------- Acid gas............................. As received Equilibrated SO2 50,000 64 3 5 12 ............................. Cl2 5,000 64 3 5 12 ............................. SO2 5,000 32 4 5 12 ............................. Cl2 5,000 32 4 5 12 Organic vapor........................ As received Equilibrated CCl4 5,000 64 3 5 12 ............................. CCl4 5,000 32 4 5 12 Ammonia.............................. As received Equilibrated NH3 5,000 64 3 50 12 As received Equilibrated NH3 5,000 32 4 50 12 Carbon monoxide...................... As received CO 20,000 \2\ 64 2 (\3\) 60 ............................. CO 5,000 \4\ 32 3 (\3\) 60 ............................. CO 3,000 \2\ 32 3 (\3\) 60 Combination of 2 or 3 of above types \5\ Combination of all above types \6\ -------------------------------------------------------------------------------------------------------------------------------------------------------- \1\ Minimum life will be determined at the indicated penetration.
\2\ Relative humidity of test atmosphere will be 95 3pct; temperature of test atmosphere will be 25 2.5 C.
\3\ Maximum allowable CO penetration will be 385 cm \3\ during the minimum life. The penetration shall not exceed 500 p/m during this time.
\4\ Relative humidity of test atmosphere will be 95 3pct; temperature of test atmosphere entering the test fixture will be 0 2.5 C- 0 C.
\5\ Test conditions and requirements will be applicable as shown in this table.
\6\ Test conditions and requirements will be applicable as shown in this table, except the minimum service lives for acid gas, organic vapor, and ammonia will be 6 min instead of 12 min.
Table 7_Canister Bench Tests and Requirements for Escape Gas Mask Canisters [42 CFR part 84, subpart I] -------------------------------------------------------------------------------------------------------------------------------------------------------- Test atmosphere ------------------------------------------------- Maximum Minimum Flow rate Number of allowable service Canister type Test condition Concentration (liters tests penetration life Gas or vapor (parts per per (parts per (minutes) million) minute) million) \1\ -------------------------------------------------------------------------------------------------------------------------------------------------------- Acid gas............................. As received.................. SO2 5,000 64 3 5 12 Equilibrated................. Cl2 5,000 64 3 5 12 SO2 5,000 32 4 5 12 Cl2 5,000 32 4 5 12 Organic vapor........................ As received.................. CCl4 5,000 64 3 5 12 Equilibrated................. CCl4 5,000 32 4 5 12 Ammonia.............................. As received.................. NH3 5,000 64 3 50 12 Equilibrated................. NH3 5,000 32 4 50 12 Carbon monoxide...................... As received.................. CO 10,000 \2\ 32 2 (\3\) \4\ 60 CO 5,000 \5\ 32 3 (\3\) 60 CO 3,000 \2\ 32 3 (\3\) 60 -------------------------------------------------------------------------------------------------------------------------------------------------------- \1\ Minimum life will be determined at the indicated penetration.
\2\ Relative humidity of test atmosphere will be 95 3 pct; temperature of test atmosphere will be 25 2.5 C.
\3\ Maximum allowable CO penetration will be 385 cm \3\ during the minimum life. The penetration shall not exceed 500 p/m during this time.
\4\ If effluent temperature exceeds 100 C during this test, the escape gas mask shall be equipped with an effective heat exchanger.
\5\ Relative humidity of test atmosphere will be 95 3 pct; temperature of test atmosphere entering the test fixture will be 0 2.5 C- 0 C.
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