2013 Water System Plan, Volume II - Seattle City Clerk's Office - City ...

Provide security alarms at access doors or hatches tied into the SCADA system.
To the extent practicable, do not allow site features where unauthorized persons or
materials can be easily concealed, such as structures, trees, or vegetation.
5.9.9.2 Personnel Access and Safety
A. Access
The design of access features for storage facilities should address the following:
Vehicular access to hatches and ladders is required and must be sized to
accommodate the size of the vehicles normally used in maintenance or
inspection of the facility.
Ladders, stairways, and catwalks designed to conform to OSHA requirements.
Hatches placed to facilitate ease of maintenance and cleaning.
Hatches sized to accommodate access for personnel with tools, inspection
divers, and remotely operated vehicle (ROV) inspection/cleaning equipment. For
larger facilities, this requirement typically results in one or more large
equipment hatches, through which field equipment can be lowered, and one or
more personnel access hatches.
Provide ladders or stairways inside of storage cells.
Ladders should be caged and have climbing or fall protection.
B. Egress and Emergency Escape
The following are egress and emergency escape features:
5.9.9.3 O&M
A. Lighting
B. Ventilation
Provide internal and external restraint support/safety equipment.
Ensure unobstructed clearances to access/egress points.
Provide any other features necessary to meet requirements associated with
confined-space entries.
Permanent lighting fixtures should be provided to light hatch doors into storage
cells and vaults and to provide visibility to the local work area perimeter.
Permanent lighting fixtures should be provided to provide a minimum
acceptable level of lighting within storage cells and vaults for routine
inspections and maintenance.
Power outlets should be easily accessible to all hatches for the operation of
temporary lights within storage cells and vaults.
Convenience outlets should within 6 feet of all mechanical equipment.
5-60 SPU Design Standards and Guidelines