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'pressure is higher than normal, the employee should ~e <br />directed to valve off or hand control the regulator znd <br />• to monitor the outlet pressure until the presser= re :urns <br /> to normal. <br />c. After pressure has been returned to normal, an evaluation <br />must be made to determine if the meters should 52 vzlved <br />off or if the system is safe. This can be accorplished <br />by checking houses in the system that were expos=_d to the <br />most extreme condi.:ions and by checking recording gzuges <br />to determine the maximum pressure experienced on the <br />system. If pressure was high enough to cause a burner'to <br />extinguish (especially in an area with radiant heaters), <br />it may be necessary to valve off all meters and relight <br />all of the appliances. At times, it will be possible to <br />check all appliances in the affected area and not valve <br />• off any meters. A~svi oovv~7+eN e..if 0••uic ~* FrRM <br />TMPs. <br />UN DE RPRESSURE CONDITIONS <br />When a gas system is underpressured, notification will usually be <br />received by either actuation of an alarm or customers within the under-• <br />pressured area will call to report pilot outages. When this condition <br />develops and the underpressure condition is verified, the follo:iing <br />steps should be taken: <br />a. Review the distribution system and ascertain the regulator or <br />regulators that feed into the affected system. Dispa~ch an <br />employee to each regulator and determine which regulator has <br />caused the problem. At times, additional load ~~ill cause the <br />• underpressure condi±ion and there will not be a reg:ilztor mal- <br />-17- <br />