Technical specifications for operation

This delay in the arrival of the auxiliary feedwater to the generators did not greatly affect the accident, but it did distract the operators. The reason why the two valves were closed is not known exactly. According to the technical specifications for operation they had to be in the open position. 

These methods have the great advantage of not requiring expensive apparatus or highly specialized technical knowledge for operation of the apparatus. The sensitivity range of present-day colorimetric methods is adequate for most purposes their specificity and accuracy are also considerable. 

AR310 1.16 Reporting of operating information. Appendix A Technical specifications (for comment)... 

The acceptance criterion for the resolution of GSI 048 is that the design and operation of the Class IE vital instrument buses, inverters, and uninterruptable power supplies (UPS s) shall provide sufficient assurance that associated batteries, inverters, battery chargers and regulated transformers are available to support safety systems operation, (i.e., there should be a technical specification for the operability of all components which make up the UPS). 

When minimum movement capability is required, the arch is sometimes filled with soft rubber using a suitable adhesive. The maximum amount of movement (axial extension and compression, lateral deflection and angular rotation) that an expansion joint is capable of absorbing is called the rated movement. This rating depends on various factors, such as the size of the expansion joints, the thickness of the tube, arch or convolution, and the type and properties of rubber compound and fabric used in construction. Rated movements are established by manufacturers of expansion joints theoretically, or are based on actual load deflection curves of each size of joint. Rubber expansion joints are generally subjected to hydraulic and vacuum tests at 1.5 times the operating pressure. No internationally accepted standard technical specification for rubber expansion bellows is available, since they are mostly custom built to specific operational requirements. The Expansion Joint Manufacturers Association in New York has laid down standards for rubber expansion joints, which are called EJMA standards [2]. 

Understanding that developing and publishing technical specifications for the procurement of approved equipment ensures transparency, provides guidance for acquisition management, and ensures that States Parties are given an opportunity to understand the operational characteristics and capabilities of such equipment ... 

The Technical Specifications for mid loop operation have been modified, requiring more restrictive conditions regarding the operability of safety systems and equipment involved in this condition of operation. 

It is a legal requirement that the operational limits and conditions for each nuclear power plant be formally specified in its operating mles (site license condition 23). The technical specifications for the APIOOO, which are presented in Chapter 16 of the European Design Control Document (EDCD) (Reference 11.1), set out the operational limits and conditions needed by the design basis... 

The PSA project performed for Sizewell B NPP is one of the most comprehensive PSA projects undertaken. The whole PSA study encompass Level 1, 2 3 analysis, internal and external initiators, and all power states. The results and findings from this study served as a basis for the development of Technical Specifications for shutdown state as well as some more specific operating and emergency procedures. Some hardware improvements, including alternate relief paths, and instrumentation were also introduced as a result of the PSA model for shutdown and low power. 

Newer plants, in general, tend to have more developed technical specifications for shutdown operations. Some plants have modified their technical specifications to address the shutdown operations. Those technical specifications would then tend to follow the same format as for the power operation. 

Increasing popularity of Technical specifications for shutdown clearly indicate that the shutdown safety is to a large extent the configuration control issue. Technical specifications in most cases introduce somewhat rigid requirements, which is somewhat detrimental for shutdown operations, where the necessary availability of equipment and allowed configurations depends highly on the decay heat level etc. 

Many plants performed systematic reviews of their Technical Specification for outages and brought those in a format compatible with TS for power operation, and included the specific requirements relevant only for outages. 

The staff concludes that WSRC has demonstrated that the SRS reactor cores are designed to minimize the potential for power oscillations during normal operation and that, under conditions where they do occur, technical specifications and operating procedures exist to control and suppress them. 

It is imperative that equipment and systems in a nuclear facility be properly controlled. The operating shift must be aware of how equipment and systems will function for operational purposes. In addition, the proper component, equipment, and system configuration must be established and maintained to satisfy the design bases and the technical specifications for the facility. 

During the course of the DOE review of Revision 0, DOE identified the need to consider additional Technical Specifications to cover specific operability requirements. The NRC s Interim Policy Statement shall be applied to these systems to ensure that sufficient Technical Specifications are included in the Phase 3 scope. The operability of these systems should be currently covered by procedures therefore, Technical Specifications for the following are not required prior to restart ... 

The Phase 1 and Phase 2 Technical Specifications were submitted to DOE for approval as WSRC-TS-10003 Revision 0 on December 18, 1990 (Reference 5). At DOE request, WSRC included a new Technical Specification for the Ultimate Heat Sink. In the submittal, WSRC noted that the review verified the Limiting Conditions for Operation, and the associated Surveillance Requirements applicable to chargeback and shutdown. DOE approved Revision 0 on January 25, 1991,(Reference 6). Until WSRC-TS-10003, Rev. 0, is fully implemented, WSRC will comply with the existing OPST-TS-105 after implementation of WSRC-TS-10003, DPST-TS-105 will be withdrawn for the K-Reactor. Additionally, there are a number of open items remaining that relate to startup and operations, including ... 

According to 10 CFR 50,73, the holder of an operating license for a nuclear power plant (the licensee) must submit an LER for a reportable event, within 30 days after discovery. An event b reportable regardless of the plant mode, power level, structure, system, or component that initiated the event. In addition the licensee must report the completion of any nuclear plant shutdown required by the plant s Technical Specifications or any operation or condition prohibited by the plant s Technical Specifications, or any deviation from the plant s Technical Specifications. LERs are available on the Internet at http //www.nrc.gov/NRR/DAILY/97mmdddr.htm, where inrn is the... 

NATO Army Armaments Group (NAAG), Land Group 7 (Joint NBC Defence) Operational Requirements,Technical Specification and Evaluation Criteria for NBC Protective Clothing (AEP-38). Brussels NATO, 1998. 

At this point, the final specifications for the one or two chosen product(s) after selection process should be identified. This can be done using a three-step procedure. First, we define the product micro and macrostructure. Second, we rank the product s most important attributes, an effort that forces a review of how the product will be used. Third, we review any chemical triggers, that is, chemical stimuli which cause major changes in product properties. Finally, we turn to the manufacture itself, which relies on technical know-how of thermodynamics, chemical reaction kinetics, transport phenomena, and unit operations. Some of these ideas are illustrated in the following example. Except for a schematic of the manufacturing process, the many details related to the manufacturing plant are omitted in this discussion. 

Pumps and compressors are designed per technical specifications and standards developed over years of operating and maintenance experience. Table lO-lO lists some of these standards for pumps and compressors and for related equipment such as lubrication systems and gearboxes which, if not properly specified, could lead to many operational and maintenance problems with the pumps and compressors. These standards specify design, construction, maintenance, and testing details such as terminology, material selection, shop inspection and tests, drawings, clearances, construction procedures, and so on. 

It is recognized that the URS may be superseded by the FDS as the definitive specification for system design. The URS, however, remains the technical and operations statement of user requirements and must be maintained under change control as an up-to-date document throughout the life of the system. The URS also remains the base document against which PQ is verified, and once the URS is approved a PQ test plan can be generated. 

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