|Пермь банки обмен валюты||275|
|Фильм супернянь 2 отзывы||Convolutional Code Structure and Viterbi Decoding. Быстрая навигация Главная. Generator polynomial g x. Bibb Cain Ограниченный просмотр - Бестселлеры Выбор редакторов Все электронные книги. Accordingly, the system must test the result step to determine if the result is an actual cube root.|
|Bch code table||Биткоины как их вывести в рубли|
|Bch code table||Биткоин к доллару яндекс|
Electrical requirements for individual substances are shown in column i of the summary of minimum requirements in chapter VI. Gauging devices should be independent of the equipment required under 4. Types of gauging for individual substances are shown in column j of the summary of minimum requirements in chapter VI.
If such instruments are nor capable of testing for both toxic concentrations and flammable concentrations, then two separate sets of instruments should be provided. If a fixed system is installed, at least one portable instrument should be provided. Vapour-detection requirements for individual substances are shown in column k of the summary of minimum requirements in chapter VI.
Fire-extinguishing media determined to be effective for certain products are listed in column I in the table of chapter VI. Tanks carrying liquids at ambient temperatures should be so loaded as to avoid the tank becoming liquid-full during the voyage, having due regard to the highest temperature which the cargo may reach.
In addition, a suitable inert gas pad should be maintained in the ullage space during transit. Submersible pumps should be electrically interlocked so that the motor is de-energized before it could present a source of ignition to the cargo vapour space. A water pad should be formed in this well before attempting pump removal unless the tank has been certified as gas-free. Carbon disulphide may be carried either under water pad or under suitable inert gas pad as specified in the following paragraphs.
Carriage under water pad 4. Carriage under suitable inert gas pad 4. Means should be provided to automatically maintain a positive pressure in the tank using suitable inert gas during loading, transport and discharge.
The system should be able to maintain this positive pressure between 0. Means should be provided to monitor and maintain this condition throughout the voyage. Means should also be provided to sample these spaces for carbon disulphide vapour. If carbon disulphide vapour is returned to shore during loading or to the ship during discharge, the vapour return system should be independent of all other containment systems.
The submerged deepwell pumps should be operated in a way that prevents heat build-up in the pump. The pump should also be equipped with a temperature sensor in the pump housing with remote readout and alarm in the cargo control room.
The pump should also be fitted with an automatic shut-down device, if the tank pressure falls below atmospheric pressure during the discharge. Remote manual operation should be arranged such that remote starting of pumps supplying the waterspray system and remote operation of any normally closed valves in the system can be carried out from a suitable location outside the cargo area adjacent to the accommodation spaces and readily accessible and operable in the event of fire in the areas protected.
The water-spray system should be capable of both local and remote manual operation, and the arrangement should ensure that any spilled cargo is washed away. Additionally, a water hose with pressure to the nozzle when atmospheric temperature permits, should be connected ready for immediate use during loading and unloading operations. If a mechanical ventilation system is installed, all blowers should be of nonsparking construction.
Mechanical ventilation equipment should not be located in the void spaces surrounding the cargo tanks. Lighting fixtures should be approved for use in diethyl ether vapours. The installation of electrical equipment on the weather deck should comply with the requirements of this Code.
Acetone cyanohydrin must be stabilized with an inorganic acid to prevent decomposition. A certificate of stabilization should be provided by the manufacturer specifying:. During discharge operations, arrangements should be made to ensure that water occupies the volume of phosphorus discharged. Any water discharged from a phosphorus tank should be returned only to a shore installation. The ullage space should be filled with inert guts or naturally ventilated by two cowled standpipes terminating at different heights but at least 6 m above the deck and at least 2 m above the pump-house top.
A high-temperature alarm should be fitted. The system should operate automatically in the event of an escape of phosphorus. Each cargo pump should be arranged to ensure that the product does not heat significantly if the discharge line from the pump is shut off or otherwise blocked.
Facilities should be provided for sampling the tank contents without opening the tank to atmosphere. Any hold space in which an independent cargo tank is located should be inerted. Such inerted spaces and tanks should be monitored for these products and oxygen. Portable sampling equipment is satisfactory. Liquid and vapour from these lines should not be discharged to atmosphere. Tanks should be designed for the maximum pressure expected to be encountered during loading, conveying and discharging cargo.
An automatic nitrogen make-up system should be installed to prevent the tank pressure falling below 0. Sufficient nitrogen should be available on board to satisfy the demand of the automatic pressure control. Nitrogen of commercially pure qualify A battery of nitrogen bottles connected to the cargo tanks through a pressure-reduction valve satisfies the intention of the expression "automatic" in this context. The water-spray system should be capable of both local and remote manual operation and the arrangement should ensure that any spilled cargo is washed away.
Remote manual operation should be arranged such that remote starting of pumps supplying the water-spray system and remote operation of any normally closed valves in the system can be carried out from a suitable location outside the cargo area, adjacent to the accommodation spaces and readily accessible and operable in the event of fire in the areas protected. Additionally, a water hose with pressure to the nozzle, when atmospheric temperatures permit, should be connected ready for immediate use during loading and unloading operations.
The elasticity of the lining should not be less than that of the supporting boundary plating. However, tanks on existing ships previously approved for the carriage of toxic products should have a minimum relief-valve setting as near 0. Mitigation of this tendency is carried out by introducing small amounts of chemical additives into the liquid cargo or controlling the cargo-tank environment.
Ships carrying such cargoes should be provided with a certificate of inhibition from the manufacturer and kept during the voyage, specifying:. Venting equipment should be of a type that can be checked periodically for adequacy of operation. Subsequent remelting can thus yield pockets of uninhibited liquid, with the accompanying risk of dangerous polymerization.
To prevent this, care should be taken to ensure that at no time are such cargoes allowed to crystallize or solidify, either wholly or partially, in any part of the tank. Any required beating arrangements should be such as to ensure that in no part of the tank does cargo become overheated to such an extent that any dangerous polymerization can be initiated.
If the temperature from steam coils would induce overheating, an indirect low-temperature heating system should be used. The ventilation-system exhaust ducts should discharge at least 10 m away from openings into accommodation spaces, intakes to ventilation systems, work areas or other similar spaces and at feast 4 m above the tank deck. Special consideration by the Administration should be required for below-deck largo pump-rooms. The provisions of this section are applicable in addition to the required gauging devices where specific reference is made in column m of the summary of minimum requirements in chapter VI.
Means should be provided to enable the alarm to be tested prior to loading. All loading operations should be terminated at once in case any system essential for safe loading becomes inoperative. In case of a power failure on any system essential for safe loading, an alarm should be given to the operators concerned. In addition the following provisions apply:. The acidity pH of the cargo when diluted wish 10 parts of water to one part of cargo by weight should be between 5.
The solution should not contain more than 10 ppm chloride lolls, 10 ppm ferric ions, and should be free of other contaminants. Equipment which in service or when defective may release combustible products into the cargo, e. Tanks should not be used for seawater ballast. Tanks and associated equipment should be recleaned to the satisfaction of the Administration. Temperature alarms and controls should be located on the navigating bridge.
Measurements of pH should then be taken every 24 h. If the pH is below 4. Controls for this system should be located on the navigating bridge. For this purpose, kg of ammonia per 1, tons of ammonium nitrate solution should be available on board. Such weatherhoods should be accessible for inspection anti cleaning. Aluminium should not be used for piping on deck. All nonmetallic materials of construction for the containment system should neither be attacked by hydrogen peroxide nor contribute to its decomposition.
Remote temperature readouts and continuous monitoring should be located on the bridge. Remote readouts, continuous monitoring if gas-sampling lines are used, intermittent sampling is satisfactory and visible and audible alarms similar to those for the temperature sensors should also be located on the navigating bridge. Two portable oxygen monitors should also be available as back-up systems. Certification from the shipper that the product meets this standard should be presented to the master and kept on board.
A technical representative of the manufacturer should be on board to monitor the transfer operations and have the capability to test the stability of the hydrogen peroxide. He should certify to the master that the cargo huts been loaded in a stable condition. Protective clothing should include coveralls that are nonflammable, suitable gloves, boots and eye protection. A certificate should be on board the vessel indicating that the procedures in the circular have been followed.
The passivation requirement may be waived by an Administration for domestic shipments of short duration. Particular care in this respect is essential to ensure the safe carriage of hydrogen peroxide. Remote temperature readouts and continuous monitoring should be located on the navigating bridge. The enhancement of flammability by oxygen enrichment should be recognized, Remote readouts, continuous monitoring if gas-sampling lines are used, intermittent sampling is satisfactory and visible and audible alarms similar to those for the temperature sensors should also be located on the navigating bridge.
These venting systems should be designed in such a manner that there is no introduction of seawater into the cargo tank even under heavy sea conditions. Emergency venting should be sized on the basis of tank design pressure and lank size. The minimum application rate should satisfy then following criteria:. He should certify to the master that the cargo has been loaded in a stable condition.
To minimize fire risk, spillage should not be allowed to dry out. Such information should include a cargo-stowage plan to be kept in an accessible place, indicating all cargo on board, including each dangerous chemical carried:. With any hazardours cargo, cargo-tank lids, ullage ,and sighting ports, tank washing access covers should be open only when necessary.
Where the method described in 2. Additional operational requirements are found in the following paragraphs of the Code:. If questions are raised regarding the content, the original version of the regulatory framework as published through the official channels prevails. Zoeken op tekst Zoeken. Onderwerp: Home Zoekresultaten.
BCH-Code revised Code for the construction and equipment of ships carrying dangerous chemicals in bulk - Res. Externe relaties. Maak een PDF. Permanente link. Ingangsdatum: Chapter 01 General Chapter 1 - General. Products having significant hazards in addition to or other than flammability. Products which may present a hazard to the environment, if accidentally released.
The Code is at present limited to the liquids shown in the summary of minimum requirements in chapter VI. Products that have been reviewed and determined not to come within the scope of the Code are found in chapter VII. Operational methods should not be used within a cargo tank and should consist of one of the following types: removing spool-pieces or valves and blanking the pipe ends;.
This survey should be such as to ensure that the structure, equipment, fittings, arrangements and material fully comply with the applicable provisions of the Code. A periodical survey at intervals specified by the Administration, but not exceeding live years, which should be such as to ensure that the structure, equipment, fittings, arrangements and material comply with the applicable provisions of the Code.
A minimum of one intermediate survey during the period of validity of the Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk. Intermediate surveys should be such as to ensure that the safety equipment, and other equipment, and associated pump and piping systems comply with the applicable provisions of the Code and are in good working order.
An annual survey within three months before or after the anniversary date of the Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk which should include a general examination to ensure that the structure, equipment, fittings, arrangements and materials remain in all respects satisfactory for the service for which the ship is intended.
An additional survey, either general or partial, according to the circumstances, should be made when required after an investigation prescribed in 1. Such a survey should ensure that the necessary repairs or renewals have been effectively made, that the material and workmanship of such repairs or renewals are satisfactory, and that the ship is fit to proceed to sea without danger to the ship or persons on board.
A new certificate should only be issued when the Government issuing the new certificate is fully satisfied that the ship is in compliance with the requirements of 1. Where a transfer occurs to the flag of another State, the Government of the State whose flag the ship was formerly entitled to fly may, if requested within 12 months after the transfer has taken place, as soon as possible transmit to the Administration copies of the certificates carried by the ship before the transfer and, if available, copies of the relevant survey reports.
Existing ships should comply with the provisions of the Code for the cargoes to be carried, except as follows: Tanks for cargoes required to be carried in type 1 ships should comply with 2. Tanks for cargoes required to be carried in type 2 ships should be located outside the extent of minor side damage specified in 2. Compliance with 2. When an existing chemical tanker is converted from a type 3 ship to a type 2 ship the full requirement of 2.
Full compliance with 2. Chapter 02 Cargo containment Chapter 2 - Cargo containment 1 1 The provisions of chapter 2 of the IBC Code, if satisfied in their entirety, may be applied as an alternative to part A. A Physical protection siting of cargo tanks; floatability and damage stability 2A - Physical protection siting of cargo tanks; floatability and damage stability. C Ship arrangements 2C - Ship arrangements. D Cargo transfer 2D - Cargo transfer. E Tank vent systems 2E - Tank vent systems.
F Cargo temperature control 2F - Cargo temperature control. G Materials of construction 2G - Materials of construction. Where applicable, the following should be taken into account in selecting the material of construction: notch ductility at the operating temperature; corrosive effect of the cargo; possibility of hazardous reactions between the cargo and the material of construction; and suitability of linings and coatings. H Environmental control of vapour space in cargo tanks and void spaces surrounding such tanks 2H - Environmental control of vapour space in cargo tanks and void spaces surrounding such tanks.
Chapter 03 Safety equipment and related considerations Chapter 3 - Safety equipment and related considerations. A Ventilation in cargo handling spaces 3A - Ventilation in cargo handling spaces. B Electrical requirements in respect of flammable cargoes 3B - Electrical requirements in respect of flammable cargoes.
C Gauging 3C - Gauging. D Vapour detection 3D - Vapour detection. E Fire protection 3E - Fire protection Fire-extinguishing media determined to be effective for certain products are listed in column I in the table of chapter VI. F Personnel protection 3F - Personnel protection. G Tank filling 3G - Tank filling. Chapter 04 Special requirements Chapter 4 - Special requirements.
Ships carrying such cargoes should be provided with a certificate of inhibition from the manufacturer and kept during the voyage, specifying: name and amount of inhibitor added; date inhibitor was added and the length of its effectiveness; any temperature limitations qualifying the additives effective lifetime; and the action to be taken should the length of voyage exceed the effective lifetime of the inhibitors.
Water or steam should not be used as the heat-transfer media in a cargo temperature control system required by 2. In an introduction to BCH codes , the basic technique of using BCH codes for single- and double-error correction was outlined. On this page, various polynomials can be chosen to demonstrate the structure of BCH codes capable of correcting several bit errors.
Click on one of the 3-bit values above to confirm this calculation using the polynomial calculator. This choice of P x is a primitive polynomial. See the factors of P x Minimal Polynomials In the above table, each term a n is associated with a minimal polynomial. The BCH code generating polynomial is formed from one or more of these minimal polynomials.
Let t be the number of bit errors to be corrected.
Table 3 shows the delay overhead due to the error correction circuitry for the bit and bit BCH code based error correction scheme and similar sized. BCH codes is a powerful class of error correcting cyclic block codes that are widely used in is presented in Table 2, section Baseline SVM algorithm. METHOD FOR LOCATING FOUR ERRORS IN A REED-SOLOMON OR BCH CODE polynomials are determined by trial and error, or by matrix manipulation or look-up table.