High pressure systems 2 days

PREREQUISITES:
None

Price NOK  6800,- including course materials, diploma and lunch.

For courses held in english, minimum 5 partisipants
All courses are held in Norwegian unless otherwise stated.

Participants will have a good and safe introduction to high pressure testing equipment , theory and practice. After completing the course, participants will be able to use pressure testing equipment in a safe manner, so that accidents and injuries are avoided.

For more information about the course

For more information send us an e-mail to kurs@biks.no

Course content: 

Introduction
Regulations, guidelines
Best practice
Risk assessment
Personnal safety equipment
Pressure classes
High pressure fittings and hoses
Pre-use control
Accidents and consequenses, first aid
Practical testing 
Exam

Basic safety guidelines for the safety of all personnel during pressure testing operations.​

Plan and implement each pressure-testing event in a manner that mitigates unnecessary exposure to procedural hazards. 

Misconceptions about hydraulic systems and stored energy:

  1. If a hydraulic pump is shut off there is no pressure in the system.
    TRUE/FALSE
    A hydraulic system has the inherent capability to store energy even when the pump is shut off. Depending on the system design, a hydraulic system can store energy in one or more "pockets" within a system. In addition, certain types of valves, eg. counterbalance and pilot-operated check valves are "pressure traps." Consequently, it is wise to error on the side of safety - assume that there is stored energy in a hydraulic system when the pump is shut off.
     
  2. When a hydraulic pump is shut off the stored energy immediately dissipates within the system.
    TRUE/FALSE
    There are certain design configurations that will allow pressure to immediately dissipate when the pump is shut off. However, there are an equal number of design configurations that don't.
    It's not possible to visually determine if a system does or does not store energy. Consequently, it is safer to assume that energy is stored when the pump is shut off.
     
  3. If you activate a manual directional control valve when the hydraulic pump is shut off the system will bleed off.
    TRUE/FALSE
    If a hydraulic system is equipped with certain types of valves, eg. counterbalance valves or pilot-operated check valves, they typically do not function unless the pump is operating. Consequently, by activating a directional control valve when the pump is not running renders these valves inoperable. They, in effect, become "pressure traps."
    In addition, many directional control valves are manually controlled and pilot-operated. These valves do not operate unless there is pilot pressure, which is only available if the pump is operating.
     
  4. Activating the override pushpin on a solenoid-operated, directional control valve while the pump is shut off, will de-energize a hydraulic system.
    TRUE/FALSE
    An override pushpin is provided to mechanically override a solenoid-operated, directional control valve. It operates in a similar manner to a lever-operated valve. Once again if the system is equipped with any load-holding valve, even though the spool can be moved with the aid of a push-pin, the load-holding valves become "pressure traps." In addition, larger solenoid-operated valves are pilot-operated. Consequently, the override push-pin will have no effect if in the event the pump is shut off, which leaves the system without pilot pressure.
     
  5. A hydraulic system can be de-energized by "cracking" (loosening) a connector and allowing the stored energy to vent to atmosphere.
    TRUE/FALSE
    It is a well-known fact that exhausting high pressure oil to atmosphere can cause severe injury or death, if while doing so oil penetrates the skin.
    It can also present an extreme fire hazard if the oil comes into contact with an ignition source.
    In addition, certain connector designs are not conducive to "careful" cracking. Accordingly, high pressure hydraulic oil should NEVER be vented to atmosphere - the outcome is always uncertain!
     
  6. If an accumulator is installed in a hydraulic system, it will automatically de-energize when the pump is shut off.
    TRUE/FALSE
    Many hydraulic systems are equipped with accumulators for the very purpose of storing energy in the event of an unexpected power failure that renders the pump inoperable.
    These types of systems have to be equipped with some type of manual de-energization device. The problem is that the majority of these manual de-energization devices have no means of de-energization verification. In many cases people rely on "sound" as a means of determining if and when an accumulator has dispensed of its stored energy.
    There are some hydraulic systems that are equipped with automatic accumulator de-energization devices. Many of these work in conjunction with timers. Again, there is generally no way of verifying if the stored energy is depleted.
    NOTE: Some hydraulic systems have pressure gauges. It would be unwise to use onboard pressure gauges to indicate if there is or is not stored energy in a hydraulic system for two reasons: first, the gauge could be damaged or simply aged, and secondly, the placement of the sensing line might be in a part of the circuit where it cannot detect stored energy. It is imperative therefore, to verify accumulator de-energization with reliable instrumentation; also, the person using the instrumentation ought to know where to look for stored energy.
     
  7. Air-bleeding a hydraulic cylinder can be accomplished by "cracking" a connector and cycling the cylinder.
    TRUE/FALSE
    Once again, air-bleeding is typically accomplished by exhausting the air/oil to atmosphere. Exhausting high pressure oil to atmosphere can cause severe injury or death if oil penetrates the skin.
    It can also present an extreme fire hazard if the oil comes into contact with an ignition source.
    In addition, certain connector designs are not conducive to "careful" cracking.
    Accordingly, high pressure hydraulic oil should NEVER be vented to atmosphere.

Diploma / Certificate of competence:

A certificate of course completion shall be issued to each students who has successfully met the requirement of the course.

According to NORSOK STANDARD  R-003N / R-005N

BIKS AS is a certified training center ATS 202. Certified by the ASAS Certification AS Norway - Aproved by Norwegian Labour Inspection Authority.