Custodial

Sample Integrity. In order to be able to rely on the results of measurements, it is necessary to be sure that the sample as analy2ed is the same as it was when collected, and that it is properly identified in the field, in the laboratory, and in the report. Transit times and temperatures should be within the limits allowed for the type of sample and analysis. A series of documents which estabhsh a chain of custody should exist so that it is possible to be sure that the right result goes with the right sample. 

Servo Gauge. Servo gauges are high accuracy, electromechanical devices that are used on inventory control appHcations where accountabiUty is mandated for custody transfer of Hquids. The large, million barrel, bulk terminal vessels are where these devices originally found a niche. 

Contract carriers generally are not held to the same standard of HabiHty as common carriers because they are considered ordinary for-hire bailees and, therefore, are Hable only for their failure to exercise a reasonable degree of care for goods in their custody or possession, although such HabiHty may be varied by the contract. However, motor carriers providing service under contract are held to the same HabiHty standard appHcable to common carriers unless the statutory provisions imposing the standard are waived in the contract. 

Specifications for gas turbine fuels prescribe test limits that must be met by the refiner who manufactures fuel however, it is customary for fuel users to define quality control limits for fuel at the point of delivery or of custody transfer. These limits must be met by third parties who distribute and handle fuels on or near the airport. Tests on receipt at airport depots include appearance, distfllation, flash point (or vapor pressure), density, freezing point, smoke point, corrosion, existing gum, water reaction, and water separation. Tests on delivery to the aircraft include appearance, particulates, membrane color, free water, and electrical conductivity. 

In practice, most attention is given to accuracy when the measured variable is the basis for billing, such as in custody transfer applications. However, whenever a measurement device provides data to any type of optimization strategy, accuracy is veiy impoi tant. 

Flow is an important measurement whose calibration presents some challenges. When a flow measurement device is used in applications such as custody transfer, provision is made to pass a known flow through the meter. However, such a provision is costly and is not available for most in-process flowmeters. Without such a provision, a true cahbration of the flow element itself is not possible. For orifice meters, calibration of the flowmeter normally involves cahbration of the differential pressure transmitter, and the orifice plate is usually only inspected for deformation, abrasion, and so on. Similarly, cahbration of a magnetic flowmeter normally involves cahbration of the voltage measurement circuitry, which is analogous to calibration of the differential pressure transmitter for an orifice meter. 

High value products and proprietary information are often placed in the custody of the selected toller. This can be a major concern in the decision to work with a toller. It is sometimes essential to determine... 

Material returned to the client or sent to treatment disposal should have documented chain of custody. 

High value products and often proprietaiy information are given into the custody of a third party. It is therefore essential to determine what measures are being taken by tollers to safeguard products and information. 

Al the Ooishi shrine of Ako in Japan, a geodesic dome made of bamboo with three golden balls, which was the symbol called Uraajirushi used by a general named Mori Mis-aemon nojyo Yoshinari at the battle of Okehazama in 1560, has been kept in custody. (See ref. [4]). 

Chain of custody Documentation necessary to trace sample possession from the time of collection throughout the time of analysis. 

Place the manuals in the custody of secretaries or clerks instead of the users. 

Haft, m. hold adhesiveness, tenacity fastener (hook, clasp, etc.) keeping, custody. 

Records. The manufacturer shall keep records of all calculations and tests. When requested by prospective purchaser or by a user of the equipment, the manufacturer shall examine the details of computations, drawings, tests, or other supporting data necessary to demonstrate compliance with the specification. It shall be understood that such information is for the sole use of the user or prospective purchaser for checking the API rating, and the manufacturer shall not be required to release the information from his custody. 

A protocol must be established and followed for sample preparation, labeling, packaging, shipping, and chain-of-custody procedures. Also, the volume of the samples will be specified by the analytical laboratory depending on the analytical methods to be used and the desired sensitivity. Accordingly, principal attention will be given here to the sampling methods, preparation of the samples for analysis, and QA/QC aspects of both. 

The samples are identified in the receiving laboratory on arrival on the basis of documentation provided in the shipment and the information supplied in the study plan and chain of custody. Acknowledgement to the field investigator can then be given. 

Chain of custody this page includes the receiving date and time and condition of storage of the samples prior to processing and the condition the processed fractions were maintained at prior to shipping. 

Communication among all individuals involved in an LSMBS is crucial. Lines of communication must be clearly defined and must be in place well before the study is initiated. Therefore, lines of communication between the persons who collect and ship commodities, the field phase managemenf sfudy personnel, fhe analytical laboratories, and overall study management must all be clearly established prior to study initiation. This delineation of the lines of communication must include oral and written communication, including the transmittal of raw data such as sample collection logs and chain of custody forms. 

Please note the following Reference SOP for purging and sampling is WEI-8DD. Dedicated bladder pumps are used for purging and sampling. Sample IDs are listed on the Chain-of-Custody form. 

All application verification and soil samples must be individually labeled with unique sample identification (ID) and other identifying information such as study ID, test substance name, sample depth, replicate, subplot and date of collection, as appropriate. Proper study documentation requires that sample lists and labels be created prior to work commencing in the field. Water- and tear-resistant labels should be used since standard paper labels may become water-soaked and easily torn during sample handling. Sample lists should have the same information on them as the labels and are a convenient place to record plot randomization, initials of the individual who collected the sample, and date of collection. As such, the sample list is important in establishing chain of custody from the point of sample collection until its arrival at the laboratory. 

Field fortification samples may be shipped with field samples but not with controls. Controls should be kept separate from treated samples and may be placed in a separate container within the container used to ship the treated samples. Samples shipped overnight should be shipped in coolers with sufficient dry-ice to maintain the samples in a frozen state for at least 48 h in case a delay in shipment of the samples occurs. Samples should not all be shipped together in one shipment but should be split to ensure that all the samples would not be lost at the same time. A chain of custody form should accompany each separate cooler or shipping box and should list each sample that is in each box. The receiver of the shipment should fill out the chain of custody form and record the conditions of the samples upon arrival at the analytical laboratory indicating whether or not the samples were frozen, ambient, or otherwise upon arrival and if the sample integrity had been compromised during shipping. 

Field forms may be used to document the movement of the field samples from the field to the analytical laboratory. Chain of custody forms may document the sample number, when it was sampled, when it was shipped, where it was being shipped from, and where it was going. The chain of custody form may also contain information on when the sample was received, by whom it was received, and the condition of the samples upon arrival at the laboratory. The chain of custody form also documents that the sample itself was taken. 

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