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11.2.1. Pressure Systems Training and Certification. All personnel who operate, test, and maintain pressure systems shall be trained and certified.
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11.2.2. Pressure Systems PPE
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11.2.2.1. Selection of PPE. The PPE selected shall have been approved for the planned usage by the appropriate local safety authorities, occupational health authorities, and other applicable approving authorities as identified by the PSWG and Range Safety (see section 5.3).
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11.2.2.1.1. Approval shall be limited to a particular model number of protective equipment and a particular operation.
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11.2.2.1.2. Approval of PPE for an operation depends on the type and volume of propellants involved, the size of the lines, flow rate, pressure, capability to deal with emergencies, and egress accessibility.
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11.2.2.1.3. Approvals are not transferable; approvals for similar operations require a reevaluation of the parameters stated above.
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11.2.2.1.4. Protective gear shall be compatible with the propellants involved, shall be fire resistant, non-static producing, and shall have been approved for the planned usage by the appropriate local safety authorities, occupational health authorities, and other applicable approving authorities as identified by the PSWG and Range Safety (see section 5.3).
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11.2.2.1.5. If the protective gear has limitations, these limitations and subsequent protective actions shall be identified in the operating procedure.
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For example, splash suits are not to be used when hydrazine concentrations can exceed 100 ppm.
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11.2.2.2. SCAPE, Category I or IV
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11.2.2.2.1. SCAPE, Category I or IV shall be used for propellant flow and pressurization during the following operations:
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11.2.2.2.1.1. Connection and disconnection of wet lines or contaminated (not purged and flushed) dry lines.
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11.2.2.2.1.2. Sampling operations.
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11.2.2.2.1.3. During propellant flow.
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11.2.2.2.1.4. During initial pressurization with propellants until system integrity has been verified (no leaks).
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11.2.2.2.1.5. Connections and disconnections of tanker load/off-load lines.
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11.2.2.2.1.6. Removal and replacement of components in a liquid line.
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11.2.2.2.1.7. Opening any liquid system that has not been drained, purged, and flushed with referee fluid.
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11.2.2.2.1.8. When the condition of the system is uncertain or unknown.
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11.2.2.2.2. The maximum operating time in a Category I SCAPE suit is 110 minutes; however, the appropriate local safety authorities (including Pad Safety for AF Range facilities) can authorize on-station time not to exceed 120 minutes. In extreme temperatures, the appropriate local safety authorities can restrict on-station times in Category I SCAPE suits to less than 110 minutes. (ER Only) Personnel using Category I SCAPE suits shall observe a 60-minute rest period between consecutive SCAPE operations; for example, no double-packing.
Note: SCAPE categories are defined as:
Category I - Propellant Handlers Ensemble (PHE) with breathing backpack unit.
Category IV - Propellant Handlers Ensemble (PHE) with hardline breathing hose.
Category VI - 'Chemturion' Chemical Protection Suit (CPS) "blue suit" with hardline breathing hose.
Please refer to KNPR 8715.5 KSC Personal Protective Equipment (PPE) Procedural Requirements for SCAPE operations requirements and further explanation of categories.
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11.2.2.2.3. For physiological purposes, the maximum operating time in a Category IV or VI SCAPE suit shall not exceed four consecutive hours.
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11.2.2.3. Splash Suits. Splash suits, with self-contained breathing apparatus, shall only be used with systems that contain residual vapors and only after the appropriate local safety authority’s approval. If any liquid is in the system, splash suits shall not be used.
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11.2.2.3.1. Removal of full protective gear after system integrity verification shall require approval by the appropriate local safety authorities.
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11.2.2.3.2. Emergency protective gear shall be available throughout operations to the crew and other personnel who might be affected in the event of a spill.
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11.2.2.3.3. The following non-liquid operations shall require splash suits:
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11.2.2.3.3.1. Removal and replacement of components on purged and isolated liquid lines.
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11.2.2.3.3.2. Removal and replacement of components on vent lines.
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11.2.2.3.3.3. Connections and disconnections of drained, purged, and isolated lines.
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11.2.2.3.3.4. Pressure leak checks when required by procedure.
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11.2.2.3.4. With the appropriate local safety authority concurrence, the use of splash suits during propellant flow after integrity has been established may be allowed at the WR.
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11.2.2.4. PPE for Cryogenic Systems
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11.2.2.4.1. All personnel performing liquid oxygen and liquid hydrogen transfer operations, repairs, or adjustments to the system shall wear PPE in accordance with 29 CFR 1910, NPR 1800.1, Chapter 4, and local requirements. The PPE shall be approved by the approved local safety/occupational health authority and is subject to the approval of the Bioenvironmental Engineer as required.
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11.2.2.4.2. Personnel performing operations on other cryogenic systems shall be similarly protected, except that flame-resistant treating of coveralls is not required for non-flammable commodities.
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11.2.2.5. PPE for Hydrogen Peroxide Transfers. Hydrogen peroxide transfers shall require PPE in accordance with 29 CFR 1910, NPR 1800.1, Chapter 4, and local requirements. The PPE shall be approved by the approved local safety/occupational health authority and is subject to the approval of the Bioenvironmental Engineer as required.
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