Standard Operating Procedure for Chemical Handling and Storage
EHS-00005 R12
Printed copies are considered uncontrolled. Verify revision prior to use.
DCN1216
CNSE Confidential
Page 12 of 43
8.3.5.4
An example of an acceptable form is EHS-00005-F1, Flammable Liquids
Cabinet Inventory/Inspection Form.
8.3.6
When it is necessary to dispense flammable or combustible liquids
utilizing pressure:
8.3.6.1
The canister shall be made of stainless steel.
8.3.6.2
The canister shall be less than five gallons.
8.3.6.3
Only an inert gas such as nitrogen may be used to pressurize the canister.
8.3.6.4
The canister may be pressurized to a maximum of 3 psi less than the
rating for the canister.
8.3.6.5
The canister shall be grounded.
8.3.6.6
If dispensed by pressurized lines they shall be at a pressure of less than
15 psi, and shall utilize double contained piping with braided stainless
steel outer piping.
8.4
Acids
8.4.1
May be stored only within blue acid storage cabinets, acid wet station
cabinets, or approved pass-through cabinets.
8.4.2
Storage cabinets and pass-through cabinets must be labeled as "ACIDS -
CORROSIVE".
8.4.3
The cabinet shelves and its bottom must be constructed or covered with
polyethylene, polypropylene, or similar acid resistant material, with molded
"traps" to catch acid spills.
8.4.4
Solid corrosive acids, used in laboratories, may be stored as general
chemicals
, i.e. it’s not necessary to have spill containment for solids.
8.4.5
Inorganic mineral acids (nitric sulfuric, hydrochloric) and organic acids
(acetic, lactic) shall not be stored in the same cabinet unless segregated
within the cabinet in separate spill containment trays capable of holding
110 % of the largest container of each material stored.
Dostları ilə paylaş: |