Attachment_2_-_General_Requirements_for_Design_and_Construction.doc

APPENDIX A

GENERAL REQUIREMENTS FOR DESIGN AND CONSTRUCTION

General

This section covers standards of design, materials, workmanship, installation, and inspection procedures.

Requirements of other sections of these specifications, or of referenced documents which are in excess of the requirements of this section, shall have precedence over the requirements of this section.

Principles of design and construction

Quality assurance.- The Supplier shall develop and implement a Quality Program Plan meeting the requirements of Mil. Spec. MIL-Q-9858. The Contractor's procedures and accomplishments in meeting these requirements may be monitored and reviewed as necessary by the Government.

Environmental conditions

Climatic conditions

Equipment shall be installed in machinery spaces, refer to ABS 3-3-1/9 for ambient temperature.

Electric plant machinery shall be designed to operate with seawater cooling temperature of 28 degrees F minimum and 100 degrees F maximum. In addition, those electric plant components taking air from the weather shall be designed to operate satisfactorily in any weather air ambient temperature between minus 20 degrees F and 125 degrees F with a relative humidity of zero to 100 percent.

Ship motion Equipment and machinery shall be designed and installed to operate and to maintain satisfactory lubrication, without loss of oil from machinery or hydraulic systems, under the following conditions:

When the ship is permanently trimmed down by the bow or stern as much as 5 degrees from the normal horizontal plane.

When the ship is permanently listed up to 15 degrees to either side of the vertical.

When the ship is pitching 10 degrees up or down from its normal horizontal plane.

When the ship is rolling up to 45 degrees to either side of the vertical.

Protection of personnel

Protection of personnel against operating hazards shall be provided. Shafting, couplings, gears, flexible shafts, automatic stanchion operating mechanisms, hot equipment surfaces (125 degrees F or higher), and similar items shall have adequate guards installed for protection of personnel. Such protective guards shall be removable without dismantling the machinery surrounded. Guards shall be constructed of sheet or expanded metal as light as is consistent with required protection. Guards fitted on parts requiring frequent attention shall have doors, covers, or other ready means for access, secured by wing nuts or other simple fastenings.

Protective guards shall also be installed as barriers to prevent personnel from inadvertently contacting energized and exposed electrical circuits, components, and terminals which present shock and high voltage hazards.

The following warning signs shall be used as indicated, for a.c. or d.c. voltage.

DANGER SHOCK HAZARD (in accordance with drawing, NAVSHIPS No. RE-2699757, where voltages are between 30 volts and 500 volts).

Protection of equipment Equipment shall be protected against the hazard of personnel brushing against or being thrown against the equipment, particularly under heavy sea conditions, and inadvertently causing damage to exposed components or resulting in maladjustment of exposed functional controls such as push buttons, knobs, and switches. Equipment and electric cables shall also be protected against similar hazards from accidental movement or shifting of equipment and material in exposed locations. Protection shall be provided by equipment arrangement to afford such protection or by installation of enclosures, screens, or guard rails. Such enclosures, screens, or guard rails shall be designed to withstand a static load of 500 pounds and of being used safely as handholds if so configured. The protective method utilized shall not inhibit access to the equipment as required for normal operational and maintenance procedures.

Electromagnetic Interference (EMI) reduction All Contractor-furnished electrical and electronic equipment shall meet the applicable EMI requirements of Sect. 406. All low frequency system cables shall be installed in conformance to the requirements of publication, S9407-AB-HBK-010. Equipment shall be installed in accordance with the EMI and IMI requirements of MIL-STD-1310, as modified by Sect. 406.

Electromagnetic Pulse (EMP) protection Any equipment, structures, or systems which are located in EMP exposed areas, as defined in Sect. 407, shall conform to requirements specified in Sect. 407.

Electromagnetic environment safety.- Protection from electromagnetic radiation to ordnance (HERO), personnel (HERP), and fuel (HERF) shall be provided in accordance with the criteria in publication, NAVSEA OP3565, as modified to the limits of OPNAVINST 5100.23B dated 3 Jan 1991 (for personnel protection).

Preservation and preventive maintenance program The Supplier shall establish a preventive maintenance program and shall prepare a preventive maintenance plan for all machinery and equipment to be installed on a ship. The program shall encompass the preventive maintenance to be performed from the time of receipt of the machinery and equipment until delivery to the ship, including inactive equipment maintenance required pending installation and activation of an item of machinery or equipment aboard the ship. Specific preventive maintenance requirements for each piece of machinery and equipment shall be obtained or developed by the supplier. Specific maintenance requirements shall include, but not be limited to, a simple but complete description of the action to be taken and the schedule (periodicity) and other circumstances relating to when it should be accomplished. Utilization of existing Navy Planned Maintenance System (PMS) documentation is authorized and encouraged where applicable in the preparation of these requirements. The initial preventive maintenance plan shall include the Suppliers planned approach to and organization for the total preventive maintenance program, a listing of machinery and equipment that the program will be applicable to and the specific preventive maintenance requirements.

Electrostatic Discharge (ESD) Control

The Supplier shall implement the electrostatic discharge control requirements in accordance with MIL-STD-1686A dated 8 August 1988 and DOD-HDBK-263 for ESD sensitive parts listed therein. For GFE, the ESD program shall commence at the receipt inspection of equipment; for CFE, the program shall start at contract award.

The Contractor's ESD control program shall cover the requirements as specified in Table 1 of MIL-STD-1686A dated 8 August 1988 including, all CFE procured electrical/electronic equipment, parts and assemblies that were certified and qualified using the Electrostatic Discharge Sensitivity (ESDS)Classifications 1, 2, and 3 designators and testing requirements specified under Mil. Spec. MIL-M-38510H dated 31 August 1989 and MIL-STD-883C dated 29 November 1989.

The Contractor shall maintain and abide by all ESD labeling or markings that the manufacturer has applied for the identification of ESD sensitive parts/assemblies.