A01 - PWS Attachment 0004 CHS-5 PWS Appendix C Safety Specification.docx

PERFORMANCE WORK STATEMENT

FOR COMMON HARDWARE SYSTEMS AND SUPPORT SERVICES

Draft Version 14 dated 1 July 2016

APPENDIX C – SAFETY SPECIFICATION

1. Safety

1.1. General: The equipment shall be designed so that under all conditions of normal use (installation, operation, maintenance) and under a likely fault condition (including human error), it protects against the risk of electric shock and other hazards. All hazards shall be eliminated or reduced to the lowest risk level practical using methods in the following order of precedence: design, incorporation of safety devices, incorporation of warning devices, and procedures/training. Catastrophic or critical hazards shall not rely solely on warnings, cautions, or procedures/training for control of risk.

2. Electrical

2.1. When V1 and V1+ equipment are used, the contractor shall select/verify equipment that has been listed or certified by an appropriate industry safety standard by a Nationally Recognized Test Laboratory, such as Underwriters Laboratories. The listing or certification must cover the intended equipment usage and operating environment. Where equipment are not listed or certified, they shall comply with the design requirements of NFPA 70 (National Electrical Code, NEC Article 110.2), and the appropriate UL (UL 60950-1: Standard for Safety of Information Technology Equipment) or other industry safety standard. V1 and V1+ hardware shall be Federal Communications Commission (FCC) Class A, and preferably Class B certified.

2.2. Operators shall not have access to components with voltages exceeding 30V. The operator will not be exposed to stored energy shock at the disconnecting means IAW UL 60950-1, Paragraph 2.1.1.7.

2.3. Protection will be provided to personnel during maintenance and repair to prevent unintentional contact with voltages exceeding 30V. Current sources exceeding 25A shall be protected from accidental short circuiting. Capacitors shall be discharged to less than 30V and 20J energy prior to maintainer access. Voltage measurements required by maintainers shall not exceed 300V. Circuits and components exceeding 500V shall be completely enclosed and interlocked (non-by-passable). Where interlocks are used, they shall comply with UL 60950-1, Section 2.8.

2.4. Interface with power sources and a readily accessible disconnecting means shall be IAW NFPA 70-05, and UL 60950-1, Section 3.4. Equipment designed to have multiple-input power capabilities shall be protected from damage when connected to incorrect input power/voltage levels or polarity.

2.5. Equipment grounding shall comply with the requirements of NFPA 70-05, Article 250, and the requirements of UL 60950-1, Paragraph 1.6.4 and Section 2.6. Hinges and slides shall not be relied upon as the sole means of grounding.

2.6. Equipment leakage current to ground shall not exceed 3.5 Measurement Indication Units (MIU), when tested ANSI C101.1/UL 101. Redundant equipment grounding conductors shall be required where currents exceed 3.5 MIU as per government approval.

2.7. Wiring shall comply with the requirements of UL 60950-1, Paragraphs 3.1.1 - 3.1.3. AC supply conductors shall be color-coded black and white for line and neutral conductors, respectively. Black, red, and blue shall be used to identify three phase line conductors. DC supply conductors shall be color coded red and black for plus and minus polarity, respectively.

2.8. Connector selection and design shall comply with the requirements of UL 60950-1, Paragraphs 3.2.1 and 4.3.6.

2.9. Uninterruptible power supply design shall ensure that the neutral and ground bond remains continuous whether the load is powered from the primary source or from the secondary backup source, in order to maintain proper ground fault sensing. A neutral ground bond point provided at the secondary supply shall be isolated from the primary power source neutral ground bond point in order to prevent ground loops.

3. Mechanical

3.1. The equipment shall provide maximum access and safety to personnel during installation, operation, and maintenance.

3.2. Under the conditions of normal use, wind loading, incline, etc., the equipment shall not become physically unstable to the degree that it could become a hazard to operators or maintainers.

3.3. Provisions shall be made to prevent accidental pulling out of drawers or rack mounted equipment. Latches used to safely secure doors, drawers, etc. in an open or closed position shall be reliable.

3.4. Equipment shall be able to be removed, handled, and lifted safely. Single person lift limits for equipment are as follows:

3.5. Equipment exceeding single person lift limits shall be labeled with the total weight and required number of handlers. The values are doubled for two person lift limits (uniformly distributed equipment) with 75% added thereafter per person. An appropriate number of handles will be incorporated into the design of the equipment to accommodate the required number of handlers. Whenever possible, the handles shall be located above the center of gravity and shall be capable of being placed into carrying position by one hand (where appropriate, by a gloved or mittened hand).

3.6. Equipment enclosures, as well as lenses, switches, wiring, and the like which enclose hazardous voltages, shall have adequate mechanical strength to withstand rough handling during expected use.

3.7. Equipment power switches shall be protected so as to prevent accidental actuation, if such an action could pose a hazard to operators or maintainers.

3.8. Equipment shall comply with the requirements of UL 60950-1, Section 4.1 and 4.2.

3.9. Cathode Ray Tubes shall comply with the requirements of UL 60950-1, Paragraphs 4.2.8 and 4.2.9

3.10. Hazardous moving parts of the equipment shall be guarded to reduce the risk of operator and/or maintainer injury. Edges and corners shall be rounded and smoothed.

4. Battery Box Design

4.1. Battery Box Design. Battery compartments shall prevent electrolyte from being expelled in the event of battery leakage or rupture. Battery leakage and explosive or harmful battery gases shall not leak into the equipment or to any other source of ignition.

4.1.1. Battery compartments shall safely release any out-gassing of batteries. Enclosures for lithium batteries shall prevent major system damage or serious personnel injury in the event of a violent battery rupture. Battery venting and rupture characteristics are available in TB-43-6135, Battery Compartment Design Guidelines for Equipment Using Lithium Sulfur Dioxide (LISO2) and (LI/MNO2) Batteries.

4.1.2. The design shall preclude the charging of non-rechargeable batteries. Equipment design shall protect against battery short-circuiting, voltage reversal (forced over-discharge), excessive heating or other abusive conditions under normal operating or fault conditions. Where used in parallel, batteries shall be electrically isolated from each other. Incorrect battery installation or orientation (e.g., reverse polarity) shall not cause battery or equipment damage.

5. Pressurized Components

5.1. Components shall be provided with blow-outs or relief valves, which will vent in a safe location and manner.

6. Safety Markings and Labels

6.1. Safety markings and labels shall be provided identifying any potential hazards to personnel. Safety markings and labels shall comply with the requirements of ANSI Z535.4. RF radiation hazards and voltages in excess of 30V shall use the signal word WARNING. Voltages in excess of 500V shall use the signal word DANGER. Safety labels shall comply with the durability requirements of UL 60950-1, Paragraph 1.7.11 and/or UL 969.

6.2. Markings shall be readily visible. They shall not be removed when a barrier or access door is opened/removed.

6.3. All safety hazards not eliminated through design shall be addressed in the appropriate technical manuals. Information regarding hazard-avoiding procedures and safety warning labels on equipment shall be included in all manuals.

7. Environmental, Hazardous and Radioactive Material, and Health Safety

7.1. Hazardous materials that can be exposed to personnel or the environment during any operational (to include fabrication, transportation, and setup/teardown) procedure, maintenance procedure, or as a result of damage to the equipment, or require special disposal procedures, shall be kept to a minimum. Non-toxic/environmentally acceptable substitutes shall be used whenever possible.

7.2. Use of any hazardous materials and disposal of hazardous waste shall be in accordance with current applicable Federal, State or local laws, regulations, standards and requirements. Hazardous material exposure to personnel shall be controlled to levels below the OSHA Permissible Exposure Limits, the ACGIH Threshold Limit Values, or other applicable standard.

7.3. Use of radioactive material shall be kept to an absolute minimum. Non-radioactive substitutes shall be used whenever possible. Where substitution is not possible, the least hazardous type and form of radioisotope shall be chosen. Information regarding the material shall be provided to the CE LCMC Directorate for Safety.

7.4. Class 1 and Class 2 ozone depleting substances shall not be used with the equipment.

7.5. Personnel exposure to noise shall be limited to an 8-hour time weighted average sound level of 85 dBA and 140 dBP (safe level) IAW 29CFR 1910.95 and ACGIH TLV Guide, unless superseded by more stringent dBA/dBP noise requirements elsewhere in this specification. Warnings shall be provided for systems (including headsets, handsets, earplugs, etc.) where noise levels exceed the above requirements.

7.6. Operator accessible parts shall comply with the temperature limits shown in UL 60950-1, Section 4.5.1. Cryogenic systems shall not have exposed surfaces less than 32°F.

8. Inspection and Testing

8.1. An inspection shall be performed, on one unit only, to verify compliance with this safety specification. Results are to be reported in the Safety Assessment Report.

8.2. Leakage Current Test. Leakage current for the entire equipment/system shall be measured utilizing the method outlined in ANSI C101.1/UL 101. Results are to be reported in the Safety Assessment Report.

8.3. Lithium Battery Enclosure/Box. A test shall be performed to verify that the requirements of Paragraph 3.7.3 are met. Results of this test shall be included in the Safety Assessment Report.

8.4. Retained Charge Test. A test shall be performed to verify the requirements of Paragraph 2.2 where the effective capacitance cannot be determined. Measurements shall be made with the equipment main power switch in both the ON and OFF positions. Results are to be reported in the Safety Assessment Report. NOTE: The voltmeter internal resistance will affect the measurement and should be made a test data factor.

8.5. A noise survey shall be conducted to verify the requirements of Paragraph 7.5. A noise level evaluation shall consider exposure to noise during maintenance with panels removed/opened. Results shall be reported in the Safety Assessment Report.

9. REFERENCES

ACGIH TLV Guide ACGIH Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices.

ANSI C101.1/UL 101 American National Standard Institute, Leakage Current for Appliances

ANSI Z535.4 Product Safety Signs and Labels

NFPA 70-05 National Electrical Code

UL 969 Standard for Marking and Labeling Systems

UL 60950-1 Standard for Safety of Information Technology Equipment

29 CFR 1910.95 Occupational Noise Exposure

TB-43-6135 Battery Compartment Design Guidelines for Equipment Using Lithium Sulfur Dioxide (LISO2) and (LI/MNO2) Batteries

FOR OFFICIAL USE ONLY - PROCUREMENT SENSITIVE