Plant documentation

Process and Plant Documentation for Evaluating Explosion and Fire Risks to Process Plant Buildings... 

Army. 1980. Milan Army Ammunition Plant contamination survey. Milan, TN Milan Army Ammunition Plant. Document no. AD B053362. 

Strychnos madagascariensis Spreng. ex. Baker, [umkhwakhwa, blak monkey orange] (Loganiaceae) leaf decoction is the only Swazi plant documented that is used for snakebite. The leaf contains alkaloids, flavonoids, glycosides, polyphenols, saponins and steroids (15). The frait is edible (23). The stem bark is for stomachache (11). 

The fire load density of the compartment for the additional water supply vessel inside the reactor building has been treated quite pessimistically. Although the plant documentation provided a fire load of 560 Ml resulting in a fire load density of less than 90 Ml/m for the compartment floor size of approx. 50 m, the compartment has been included in the analysis due to the permanently as well as temporarily available fire loads. Here, again the CDF may be reduced by installation of adequate fire detectors or by a reduction of fire loads. 

Plant documentation does not end when aU of the circuit paths in the facihty are defined. Each circuit begins and ends at a piece of equipment, which can be modified, reconfigured, or removed from service. Keep in mind that unless the lead technician Hves forever, never changes jobs, and never takes a day off, someone unfamihar with the equipment wiU eventually be asked to return it to service. For thk reason, a documentation file for each piece of equipment must be maintained. 

PLANT LOCATION, LAYOUT, BUILDING STRUCTURE, PLANT DOCUMENTATION... 

Proper plant documentation is essential in supervisor/ operator training, longterm plant operation and good maintenance of the total plant. 

Plant instrumentation and computer control in various degrees of sophistication are described in the next section. Plant housing, space requirements, lay-out and required plant documentation are briefly discussed. 

Plant location, layout, building structure, plant documentation... 

In the plant documentation we can usually meet with process and instrumentation (P I) diagrams which contain the process equipment and the instrumentation and control loops. P I diagrams are usually too much detailed for balancing purposes. We can simplify them by deleting control loops and a part of instrumentation which is not needed for balancing purposes. Very often the flowsheet can be further simplified by ignoring of some parts of equipment or by merging some pieces into one equipment. 

The majority of the following listed modifications and backfitting measures (partially as accident management measures) were implemented in the past decade in German NPPs. Some of the measures are still under discussion. Especially for AM procedures, an emergency manual was prepared and implemented into the plant documents but separate from the operating manual. 

When checking plant temporary or permanent modifications, it is essential to first ensure that the changes comply with the design bases of the affected structure, system or component, and secondly, that they are correctly incorporated into the plant documents (including the operational documents) which must, at all times, be consistent with one another. 

The BWRVIP flaw evaluation guidelines recommend loading combinations for plants that do not have such information in plant documentation. Methodology is provided to take stresses from finite element analyses of the core spray system under these loading combinations and to perform limit load flaw evaluation at each weld. 

In practice, the usual procedure is that the plant operator determines the quality level of the plant to be procured with the aid of his own standards. This occurs in connection with so-called specifications. In large-scale enterprises extensive sets of specifications exist, containing detailed information on all plant components to be procured, such as pipes, devices, fittings, measuring and control equipment up to scope and layout of the plant documentation. After the quality level has been determined on the part of the operator, the next task is the minimization of investment costs for the plant that fulfils such requirements. 

Documentation The plant documentation has to be in tenfold. The planning documents have to be prepared with the CAD system XYZ and submitted on data media. 

The components are marked with plain text identification and a character string as an additional distinguishing feature. The character string is subject to a certain system. In Germany, the KKS-System (Power-Plant Marking System) has proven its worth. Sufficient knowledge of this system considerably simpHfies the orientation in the plant documents as well as in the plant itself... 

The center column of Figure 18.9 includes examples of the type of measurement tool or index that can measure the dimensions in the left column. Each of these measurement devices can be classified according to three basic sources of data direct observation, archival data (obtained from examining plant documents, memos, and government reports), and self report (such as verbal answers to interview questions or written reactions... 

C.W. Hamill and F.B. Waldrop. 1964. Shielding Studies Neutron Irradiation Damage to a Lithium Hydride Compact. Union Carbide Corporation, Y-12 Plant Document Y-1454. 

Internal Radiation The contractor s internal assessment revealed the new criteria for an internal dosimetry program were not stated in plant documentation. Additionally, a method or procedure to identify workers who meet the criteria did not exist, and a complete evaluation of all contributions to internal dose was required. 

A safety review of the temporary modification is required to be performed by Reactor Engineering prior to approval. This review is to ensure that the temporary modification does not adversely affect the intended safety, reliability, or design of the plant. Documentation of the temporary modification is through drawing changes, special instructions, and temporary procedure changes that have been compiled and distributed with the temporary modification package. An independent verification of correct installation and removal is required. Reviews of the temporary modification log each shift and field verifications each month are required by RD 3.1, Appendix B. 

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