Disengaging facilities

Water from Tankage - Special disengaging facilities are generally not provided for water withdrawn from offsite tankage and pressure storage. 

Special disengaging facilities are normally required for the following cases ... 

The special disengaging facilities normally consist of one of the following ... 

The purpose of a blowdown drum is to disengage closed safety valve releases and various drainage, blowdown and diverted materials into liquid and vapor streams which can be safely disposed of to appropriate storage and flaring facilities, respectively. Entrainment of liquid hydrocarbons into a flare stack is not acceptable, since the potential exists for burning liquid falling onto the ground or adjacent facilities. For this reason, a blowdown drum is required. 

The design of these drums generally follows the same basis as that for water disengaging drums, except that a pump (with spare) is required to transfer the aqueous liquid imder level control to the appropriate receiving facilities. 

A card reader system is a type of electronic identification system that is used to identify a card and then perform an action associated with that card. Depending on the system, the card may identify where a person is or where he or she was at a certain time, or it may authorize another action, such as disengaging a lock. For example, a security guard may use his or her card at card readers located throughout a facility to indicate that he or she has checked a certain location at a certain time. The reader will store the information and/or send it to a central location, where it can be checked later to ensure that the guard has patrolled the area. Other card reader systems can be associated with a lock, so that the cardholder must have his or her card read and accepted by the reader before the lock disengages. 

Cracking, desulfurization, and demetallization reactions take place via thermal and catalytic reactions. In the upper section of the reactor, vapor is disengaged from the slurry, and hydrogen and other gases are removed in a high-pressure separator. The liquid condensed from the overhead vapor is distilled and then flows out to the secondary treatment facilities. 

Ethylene insertion into the Al-R bond is facile because of the possible precoordination of the olefin on the vacant site in the monomer that is in equilibrium with the dimer (the existence of this pre-equilibrium is confirmed by kinetic studies). This insertion allows the polymerization to proceed.The polymers can be thermally disengaged from the metal by (3-elimination that is in competition with chain growth, or by hydrolysis. This latter method produces unbranched primary alcohols whose sulfates ROSO3H are biodegradable detergents. 

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