|Note: It is the responsibility of
the Department and/or user to follow these procedures for disposal
of research equipment.
||History of Use and Spills: Before proceeding
with decommissioning procedures, the laboratory personnel must
determine the materials currently and previously stored in the
equipment and whether any spills occurred. Consult chemical
inventory found in your life safety box and your and self-inspection
reports for this information. The EH&S Chemical Inventory
group can assist with historical information for the previous
two years; call 723-0448 for assistance. Visually examine the
equipment for evidence of spills such as staining or damage
to the inner surfaces. If there is evidence of a spill, but
you cannot determine its nature (amount and identity of material),
you will need to eliminate from consideration as many potential
hazards as possible through your knowledge or the knowledge
of previous users. If this knowledge is unavailable, expensive
and time-consuming chemical analysis will be required.
||Laboratory Deactivation Guidelines: Refer
to the Stanford Safety Manual, pp. 4-38 through 4-40 for general
deactivation procedures. All cleaning of equipment prior to
disposal or surplus is the responsibility of the laboratory
personnel and the Principal Investigator(PI).
||Biological and Biohazardous Materials:
Dispose of all biohazardous materials as medical waste before
requesting assistance from the Chemical Waste Program or Health
Physics. Disinfect all surfaces of the equipment that were in
contact with infectious agents. If you need assistance with
selecting disinfecting agents, consult the Biosafety Manual
or contact the Biosafety Officer at 725-1473.
||Hazardous Waste Disposal: Determine which
hazardous materials were stored in the equipment that you wish
to dispose. Label each container to be disposed with a Stanford
University Hazardous Waste label. Submit a Chemical Waste Pickup
Request (BHS-101) to have the materials removed from the equipment.
||Radiological Survey: Notify Health Physics
(723-3201) if the equipment was used to store, contain or use
radioisotopes. Determine if any radioisotopes were spilled or
handled in the equipment. Perform a Removable Contamination
Wipe Survey. Document results in your radiological logbook.
||Cleaning and Chemical Decontamination:
Disconnect power and release or restrain any stored energy before
cleaning (follow appropriate Lockout/Tagout procedures if applicable).
Drain oils from vacuum and other pumps. Cleaning of residual
chemicals can be accomplished by wiping all surfaces with the
appropriate solvent (soap and water, alcohol, etc). Note:
Use care if water reactive materials or other materials potentially
incompatible with cleaning solutions were stored. Collect contaminated
wipes in a suitable container, label the container and dispose
as hazardous waste, or mixed radioactive/hazardous waste, as
appropriate. If you need additional information, call the Chemical
Waste Program at 725-7520.
||Radiological Safety Decommissioning: If
results from the initial wipe survey (see step V) indicate that
the equipment is contaminated, follow general cleaning procedures
to remove any radiological residue. Dispose of cleaning materials
as radioactive waste or mixed radioactive/hazardous waste as
appropriate. Notify Health Physics to perform a decommissioning
survey after you have completed the cleaning. Health Physics
will remove or deface the radioactive warning labels once decommissioning
||If the equipment contains a radioactive source
(e.g. liquid scintillation counter, gas chromatograph with ECD)
the sources must be removed from the equipment prior to disposal.
If transferred to another area or to another company, the equipment
must be tested prior to transfer. Call Health Physics (723-3201)
to arrange source removal or testing.
||Other Hazard Warning Labels: Once all
cleaning and decommissioning is complete, remove all chemical/biological
hazard-warning labels from the equipment. Tape a note to the
equipment which says: "Decontamination of this equipment,
as detailed in EH&S procedure Research Equipment Disposal
and Release to Surplus, 10/21/98, has been completed. Include
date and signature of person responsible for cleaning.
||Property Administration: Once any chemical,
radiological and biological hazards have been mitigated by the
above procedures, ask your Departmental Property Administrator
(DPA) to initiate a disposal request to the University Property
Administration (UPA) department. The request must state the
"Decontamination of this equipment, as detailed in
EH&S procedure Research Equipment Disposal and Release
to Surplus, 10/21/98, has been completed.
||If radiological decommissioning survey was required,
submit a copy of the report to the UPA.
||Removal and Draining of Refrigerant from Refrigerators
and Freezers: After the DPA confirms completion and approval
of the equipment disposal request, submit an on-line service
request to Facilities Operations to request removal of the refrigerant.
Include in the text the following information:
- Make, model number, serial number and barcode number.
The request must also state the following:
"Decontamination of this refrigerator, as detailed in
EH&S procedure Research Equipment Disposal and Release
to Surplus, 10/21/98, has been completed. An approved
equipment disposal request has been obtained from the University
Property Administrator and is in the unit. If radiological
decommissioning survey was required, a copy is included in
If you have any questions about removal of refrigerant, contact
the Peninsula Sanitary Service at 321-4236.