Otter (Lutrinae) Care Manual - Association of Zoos and Aquariums

Association of Zoos and Aquariums 143
Otter (Lutrinae) Care Manual
1) The contractor shall install all piping, valves, and equipment in a manner
and in locations to avoid obstructions and keep openings clear. Pipe and/or
equipment shall not be installed where it will present a potential tripping
hazard or below 7’-0” above finished floor, where it would be a potential
head knocking hazard. Installation shall permit direct access to all valves
and pieces of equipment that will require maintenance. The contractor shall
make any changes as directed by the owner, at no additional expense,
which may be necessary in order to accomplish this purpose.
2) Before being placed in position, all pipe, pipe fittings and accessories shall
be cleaned, and shall be maintained in a clean condition. Piping shall be
installed and aligned in accordance with the Drawings with a tolerance of +
1/8-inch in the horizontal and vertical directions.
3) All work specified and not clearly defined by the Drawings shall be installed
and arranged as directed and in a manner satisfactory to the owner.
b. Installation of Pressure Filter Gravel and Sand
1) Preparation of Filters: Before placing the media, the contractor shall
determine that all holes in the underdrain system are open.
2) Placing of Gravel: The gravel shall be deposited in such a manner as to
avoid endangering the header laterals. Each layer shall be brought up to the
required elevation and made level over the entire filter bed area, and shall
be smoothed down to a true surface. Care shall be taken not to injure
equipment piping and coatings in the filter units by walking on or dropping
gravel upon them.
3) Placing of Sand: In placing of the sand in the filters, extreme care shall be
taken to avoid disturbing the internal piping. Extreme care shall be taken to
protect the internal filter coating. Sand shall be placed to the appropriate
depth specified and shall be level.
c. Installation of Piping
1) All PVC Pipe will be transported, stored and installed with regard to
manufacturer's recommendations. Bolting of PVC flanges shall be in
accordance with manufacturer's recommendations and shall not be unduly
stressed through the use of excessive torque while tightening bolts. Use of
torque wrench will be required.
2) All life support piping shall be flushed clean prior to connection to equipment
or tanks.
d. Installation of Pumps and Motors
1) Pumps and motors shall be installed in accordance with the Manufacturer's
Recommendations.
2) Pumps shall be installed with an isolation valve on the suction side of the
pump. This valve shall be a true-union ball valve unless it is 4” or greater, in
which case it will be a gate valve. A compound gauge shall be installed
between the pump and the isolation valve.
3) Pump shall be installed with an isolation valve on the discharge side of the
pump. This valve shall be a butterfly valve. Between the pump and the
isolation valve, a swing check valve is required. A pressure gauge shall be
installed between the check valve and the isolation valve.
4) Unless otherwise noted, all pumps shall be installed on concrete
housekeeping pads.
e. System Startup
1) The contractor shall provide one full-time mechanical technician who is
familiar with the system for a period of 3 days to aid the owner in starting
and operating the system.