Let's say they took a sample of the primary coolant, saw that pH was going to get very close to the lower limit, but also that they were going to be relieved of duty in 12 hours. Eh, just write it down a little higher and don't bother adding.
Now the next person takes their sample, and finds that pH is now out of spec. They probably suspect that the previous person lied, but they can't prove it, and anyway if they reported the numbers accurately, there would be a huge investigation, lots of audits, generally not good. So they'll just report that it's low and they need to do an addition, and then lambast the person when they see them next.
Let's say they took a sample of the primary coolant, saw that pH was going to get very close to the lower limit, but also that they were going to be relieved of duty in 12 hours. Eh, just write it down a little higher and don't bother adding.
Now the next person takes their sample, and finds that pH is now out of spec. They probably suspect that the previous person lied, but they can't prove it, and anyway if they reported the numbers accurately, there would be a huge investigation, lots of audits, generally not good. So they'll just report that it's low and they need to do an addition, and then lambast the person when they see them next.