API STD 2350 pdf download

API STD 2350 pdf download

API STD 2350 pdf download Overfill Prevention for Storage Tanks in Petroleum Facilities
e) the amount of volume or space available in each tank,and any expected volume expansion, e.g. product
temperature rise in the tank(s), or other receipts or activities;
f)valve lineup;
g)other simultaneous tank activities at the facility;
h)whether (and when) a switch in receiving tanks is needed;i)who is responsible for monitoring and/or attending the receipt;j)who is responsible for terminating the receipt.
Specific procedures vary depending upon:
a)transfer quantity, e.g. single truck unloading vs. transfers from a significantly larger tank;b)flow rates into and out of the tank;
)mode of transfer, e.g. pipeline, rail, marine, or truck;dtank gauging and instrumentation equipment; ande)interaction with the transporter.
The requirements in the following sections shall be included in the pertinent,normal tank receipt and transferprocedures for all tanks. Procedures for Planning the Receipt Specific documented instructions for the receipt shall be prepared and reviewed (as appropriate) withpersonnel from the transporter and ownerloperators. These instructions shall list specific procedures and any specialcontrols needed to carry out the receipts.
More complicated operations requiring extra attention when creating procedures include:a)switching receiving tanks during the same receipt;
b)multiple tanks being filled simultaneously;
c)a tank receiving product from multiple sources; ordabnormal operations. Prior to receipt, product quantities to be received shall have been determined and compared to receivingtank available capacity to ensure that sufficient tank capacity is available. Planning shall be conducted sufficientlyahead of receipt to minimize the need for last-minute product transfers or withdrawals from a designated receivingtank prior to receipt. The planned final product level in each tank shall be determined prior to each scheduled receipt andshall not exceed the Maximum Working level without wrilten authorization. In no case shall receipt procedures beplanned to reach the High-High (HHy level alarm or AOPS. The ownerloperator shall assign required duties to competent personnel before the start of the receipt(or duties may be documented as normal duties of a particular designated job). for Pre-Receipt Activities Prior to product receipt or transfer, the available volume in the receiving tank(s) shall be verified andcompared to the planned receipt volume and deliveries out of the tank, i.e. truck loading operations. lf the plannedreceipt volume exceeds the available receipt volume, the transporter shall be contacted and plans adjusted. The pre-receipt information that is recorded for the tank shall be available to the transporter. Theminimum information shared between the transporter and the tank ownerloperator includes:
a)planned receipt volume;
b)planned receipt start time and expected receipt end time; andc)expected flow rate,including any variations. Before the product is transferred or received, the valve lineup shall be verified to confirm the product isdelivered into the designated tank(s) and that only the intended valves are open and the valves for other tanks areclosed. Prior to starting product transfer to fully- or semi-attended faclities,communications between thetransporter and the facility ownerloperator shall be tested.Based on staffing and instrumentation,communicationfrequency between the facility ownerloperator and the transporter shall be agreed upon and maintained throughoutthe transfer.See Table G.1 in Annex G for an example of attendance and communication. Prior to starting product transfer to unattended facilities, the ownerloperator shall ensure that electronicsupervision is not indicating a diagnostic alarm. Procedures for Activities During Receipt Regularly scheduled monitoring of product levels during receipts shall be required and documented. Regularly scheduled comparisons (planned vs. actual) and recording of the following information shallbe made during the receipt:
a) tank(s) involved in the receipt or transfer;b)receipt or transfer fill rate;
c)remaining receipt or transfer volume(s);d)remaining tank volume(s); and

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