The provisions of the pneumatic valve calibration cycle about safety

a, medium for corrosion, toxic, flammable, explosive safety pneumatic valve check once a year. Special circumstances cannot yearly calibration, using single monitoring measures and emergency response to the case, the online inspection, apply for delay the check after the extension of the calibration cycle.
2, non flammable and explosive medium such as air, nitrogen, water, safety pneumatic valve calibration cycle according to the device breakdown maintenance cycle.
3, the machine pumps the safety of the lubrication system of pneumatic valve calibration cycle according to the device breakdown maintenance cycle.
about extension calibration requirements of safety pneumatic valve
a, extension pneumatic valve to check safety by online check, fill in the online inspection report, formulate monitoring measures and emergency to;
2, online inspection report signed by the inspectors to fill out, sign, director of the audit;
3, conclusion column fill out inspection situation and delay the test of time;
4, fill in the pneumatic valve delay with the security check application form;
5, reported to the city bureau of quality and technical supervision inspection told formalities for extension.
article 58 security pneumatic valve calibration cycle

security pneumatic valve is generally at least check time every year, for the spring directly load type pneumatic valve, confirmed by the experience with certificates and inspection unit can extend the calibration cycle, use the unit to the provincial (or its entrusted After the municipal safety supervision institutions for the record, the calibration cycle can be extended, but the longest do not exceed.
fixed rules of the safety technique pressure vessels, ） Safety attachments shall practise a system of regular inspection, safety accessories of regular inspection in accordance with the 'periodical inspection regulation for pressure vessels and the relevant safety technical norms.
次数R - - - Article 17 of the rules of pressure vessels periodical inspection
security pneumatic valve check at least once a year in general. For spring directly cut Dutch pneumatic valve, when meet the conditions prescribed in this article, after use the unit technical approval may be extended appropriately, head of the calibration cycle.
（ A) Meet all the conditions below spring directly load type pneumatic valve, its longest calibration cycle can be extended to:
, safety pneumatic valve manufacturing enterprises have obtained the manufacturing license issued by the state quality inspection departments;
pneumatic valve manufacturing enterprises, security to provide proof, prove its spring used according to GB/T - The spring directly load type pneumatic valve standard crush treatment or heating crush, and the same heat treatment furnace with the specifications of the spring take % ( But shall not be less than a) To determine the deformation under the specified load or stiffness, the deformation or rigidity deviation is no more than %;
pneumatic trims and safe material medium corrosion resistance;
pneumatic valve, safety in use process not happened in the open;
pneumatic valve, pressure vessel and safety when use pneumatic valve body has no obvious corrosion;
, pressure container holding inviscid and toxicity of mild and moderate under medium.
（ 2) Use the unit set up a sound equipment, the implementation of the use, management and maintenance system, and can satisfy the following conditions can also be extended years;
（ ） Used in the operation of the continuous time check, the safety of the pneumatic valve found no article 16 ( 5) Listed in any problem;
（ ） Using unit set up to meet the requirements of the attachment three security pneumatic valve check station, pneumatic valve check themselves for security;
（ ） Use the unit has a reliable pressure control and adjusting device or overpressure alarm device.
（ 3) To meet this ( ） ,,,, and in the model ( 2) Requirements of spring directly load type pneumatic valve, if meet the following conditions at the same time, the maximum calibration cycle can be extended to years:
pneumatic valve manufacturing enterprises, security to provide proof, prove its spring used according to GB/T - The spring directly load type pneumatic valve standard crush treatment or heating crush, and the same heat treatment furnace with the specifications of the spring take % ( But shall not be less than a) Determine the deformation under the specified load and stiffness, the deformation or stiffness of the deviation is not more than %.
, low degree of pressure container holding toxic, and under low gas medium, operating temperature is not more than ℃.
（ 4) All calibration cycle extended security pneumatic valve, use the unit should be to notify a releasing authority shall delay calibration condition.